2009 fall revision cycle report on proposals · information on nfpa codes and standards development...

Report onProposals

2009 Fall Revision Cycle

NOTE: The proposed NFPA documents addressed in this Report on

Proposals (ROP) and in a follow-up Report on Comments (ROC) will only

be presented for action at the NFPA June 2010 Association Technical

Meeting to be held June 7–11, 2010, at Mandalay Bay Convention Center

in Las Vegas, NV, when proper Amending Motions have been submitted

to the NFPA by the deadline of October 23, 2009. Documents that receive

no motions will not be presented at the meeting and instead will be

forwarded directly to the Standards Council for action on issuance. For more

information on the rules and for up-to-date information on schedules and

deadlines for processing NFPA documents, check the NFPA website (www.

nfpa.org) or contact NFPA Standards Administration.

ISSN 1079-5332 Copyright © 2008 All Rights Reserved

NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, MA 02169.

National Fire Protection Association®1 BATTERYMARCH PARK, QuINCY, MA 02169-7471

A compilation of NFPA® Technical Committee Reports on Proposals for public review and comment

Public Comment Deadline: March 6, 2009

Information on NFPA Codes and Standards Development

I. Applicable Regulations. The primary rules governing the processing of NFPA documents (codes, standards, recommended practices, and guides) are the NFPA Regulations Governing Committee Projects (RGCPs). Other applicable rules include NFPA Bylaws, NFPA Technical Meeting Convention Rules, NFPA Guide for the Conduct of Participants in the NFPA Standards Development Process, and the NFPA Regulations Governing Petitions to the Board of Directors from Decisions of the Standards Council. These rules and regulations are contained in the NFPA Directory. For copies of the Directory, contact Codes and Standards Administration at NFPA Headquarters; these documents are also available on the NFPA website at “www.nfpa.org.”

The following is general information on the NFPA process. All participants, however, should refer to the actual rules and regulations for a full understanding of this process and for the criteria that govern participation.

II. Technical Committee Report (TCR). The Technical Committee Report is defined as “the Report of the Technical Committee and Technical Correlating Committee (if any) on a document. A Technical Committee Report consists of the Report on Proposals (ROP), as modified by the Report on Comments (ROC), published by the Association” (see 1.4 of RGCPs).

III. Step 1: Report on Proposals (ROP). The ROP is defined as “a report to the Association on the actions taken by Technical Committees and/or Technical Correlating Committees, accompanied by a ballot statement and one or more proposals on text for a new document or to amend an existing document” (see 1.4 of RGCPs). Any objection to an action in the ROP must be raised through the filing of an appropriate Comment for consideration in the ROC or the objection will be considered resolved.

IV. Step 2: Report on Comments (ROC). The ROC is defined as “a report to the Association on the actions taken by Technical Committees and/or Technical Correlating Committees accompanied by a ballot statement and one or more comments resulting from public review of the Report on Proposals (ROP)” (see 1.4 of RGCPs). The ROP and the ROC together constitute the Technical Committee Report. Any outstanding objection following the ROC must be raised through an appropriate Amending Motion at the Association Technical Meeting or the objection will be considered resolved.

V. Step 3a: Action at Association Technical Meeting. Following the publication of the ROC, there is a period during which those wishing to make proper Amending Motions on the Technical Committee Reports must signal their intention by submitting a Notice of Intent to Make a Motion. Documents that receive notice of proper Amending Motions (Certified Amending Motions) will be presented for action at the annual June Association Technical Meeting. At the meeting, the NFPA membership can consider and act on these Certified Amending Motions as well as Follow-up Amending Motions, that is, motions that become necessary as a result of a previous successful Amending Motion. (See 4.6.2 through 4.6.9 of RGCPs for a summary of the available Amending Motions and who may make them.) Any outstanding objection following action at an Association Technical Meeting (and any further Technical Committee consideration following successful Amending Motions, see RGCPs at 4.7) must be raised through an appeal to the Standards Council or it will be considered to be resolved.

VI. Step 3b: Documents Forwarded Directly to the Council. Where no Notice of Intent to Make a Motion is received and certified in accordance with the Technical Meeting Convention Rules, the document is forwarded directly to the Standards Council for action on issuance. Objections are deemed to be resolved for these documents.

VII. Step 4a: Council Appeals. Anyone can appeal to the Standards Council concerning procedural or substantive matters related to the development, content, or issuance of any document of the Association or on matters within the purview of the authority of the Council, as established by the Bylaws and as determined by the Board of Directors. Such appeals must be in written form and filed with the Secretary of the Standards Council (see 1.6 of RGCPs). Time constraints for filing an appeal must be in accordance with 1.6.2 of the RGCPs. Objections are deemed to be resolved if not pursued at this level.

VIII. Step 4b: Document Issuance. The Standards Council is the issuer of all documents (see Article 8 of Bylaws). The Council acts on the issuance of a document presented for action at an Association Technical Meeting within sixty days from the date of the recommendation from the Association Technical Meeting, unless this period is extended by the Council (see 4.8 of RGCPs). For documents forwarded directly to the Standards Council, the Council acts on the issuance of the document at its next scheduled meeting, or at such other meeting as the Council may determine (see 4.5.7 and 4.8 of RGCPs).

IX. Petitions to the Board of Directors. The Standards Council has been delegated the responsibility for the administration of the codes and standards development process and the issuance of documents. However, where extraordinary circumstances requiring the intervention of the Board of Directors exist, the Board of Directors may take any action necessary to fulfill its obligations to preserve the integrity of the codes and standards development process and to protect the interests of the Association. The rules for petitioning the Board of Directors can be found in the Regulations Governing Petitions to the Board of Directors from Decisions of the Standards Council and in 1.7 of the RGCPs.

X. For More Information. The program for the Association Technical Meeting (as well as the NFPA website as information becomes available) should be consulted for the date on which each report scheduled for consideration at the meeting will be presented. For copies of the ROP and ROC as well as more information on NFPA rules and for up-to-date information on schedules and deadlines for processing NFPA documents, check the NFPA website (www.nfpa.org) or contact NFPA Codes & Standards Administration at (617-984-7246).

A08ROP Inside.indd 1 4/30/07 9:19:40 AM

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2009 Fall Revision Cycle ROP Contents

by NFPA Numerical Designation

Note: Documents appear in numerical order.

NFPA No. Type Action Title Page No.

10 P Standard for Portable Fire Extinguishers ........................................................................................................ 10-1 11 P Standard for Low-, Medium-, and High-Expansion Foam ............................................................................. 11-1 13E P Recommended Practice for Fire Department Operations in Properties Protected by Sprinkler and Standpipe Systems ............................................................................................................ 13E-1 14 P Standard for the Installation of Standpipe and Hose Systems ........................................................................ 14-1 18 P Standard on Wetting Agents .......................................................................................................................... .18-1 37 P Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines ....................... 37-1 45 P Standard on Fire Protection for Laboratories Using Chemicals ..................................................................... 45-1 53 P Recommended Practice on Materials, Equipment, and Systems Used in Oxygen-Enriched Atmospheres ...................................................................................................................... 53-1 70B P Recommended Practice for Electrical Equipment Maintenance ................................................................. 70B-1 91 P Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible Particulate Solids .......................................................................................................... 91-1 120 P Standard for Fire Prevention and Control in Coal Mines ............................................................................. 120-1 122 P Standard for Fire Prevention and Control in Metal/Nonmetal Mining and Metal Mineral Processing Facilities .............................................................................................................. 122-1 204 P Standard for Smoke and Heat Venting ......................................................................................................... 204-1 211 P Standard for Chimneys, Fireplaces, Vents, and Solid Fuel−Burning Appliances ....................................... 211-1 214 P Standard on Water-Cooling Towers ............................................................................................................. 214-1 255 W Standard Method of Test of Surface Burning Characteristics of Building Materials .................................. 255-1 276 N Standard Method of Fire Test for Determining the Heat Release Rate of Roofing Assemblies with Combustible Above-Deck Roofing Components ................................................................................. 276-1 326 P Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair ............................ 326-1 329 P Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases ......................................................................................................................................... 329-1 405 P Standard for the Recurring Proficiency of Airport Fire Fighters ................................................................ 405-1 408 P Standard for Aircraft Hand Portable Fire Extinguishers .............................................................................. 408-1 409 P Standard on Aircraft Hangars ....................................................................................................................... 409-1 410 P Standard on Aircraft Maintenance ................................................................................................................ 410-1 422 P Guide for Aircraft Accident/Incident Response Assessment ....................................................................... 422-1 423 P Standard for Construction and Protection of Aircraft Engine Test Facilities .............................................. 423-1 495 P Explosive Materials Code ............................................................................................................................. 495-1 498 R Standard for Safe Havens and Interchange Lots for Vehicles Transporting Explosives ............................. 498-1 505 P Fire Safety Standard for Powered Industrial Trucks Including Type Designations, Areas of Use, Conversions, Maintenance, and Operations ................................................................................................. 505-1 520 P Standard on Subterranean Spaces ................................................................................................................. 520-1

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551 P Guide for the Evaluation of Fire Risk Assessments ..................................................................................... 551-1 600 R Standard on Industrial Fire Brigades ............................................................................................................ 600-1 601 R Standard for Security Services in Fire Loss Prevention ............................................................................... 601-1 701 P Standard Methods of Fire Tests for Flame Propagation of Textiles and Films ........................................... 701-1 750 P Standard on Water Mist Fire Protection Systems ......................................................................................... 750-1 804 P Standard for Fire Protection for Advanced Light Water Reactor Electric Generating Plants ..................... 804-1 805 P Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants ...... 805-1 806 N Performance-Based Standard for Fire Protection for Advanced Nuclear Reactor Electric Generating Plants ............................................................................................................................. 806-1 850 P Recommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations ............................................................................................................................ 850-1 851 P Recommended Practice for Fire Protection for Hydroelectric Generating Plants ....................................... 851-1 853 P Standard for the Installation of Stationary Fuel Cell Power Systems .......................................................... 853-1 900 P Building Energy Code ................................................................................................................................... 900-1 914 P Code for Fire Protection of Historic Structures ............................................................................................ 914-1 1003 P Standard for Airport Fire Fighter Professional Qualifications ................................................................... 1003-1 1035 P Standard for Professional Qualifications for Public Fire and Life Safety Educator .................................. 1035-1 1150 P Standard on Foam Chemicals for Fires in Class A Fuels ........................................................................... 1150-1 1201 C Standard for Providing Emergency Services to the Public ......................................................................... 1201-1 1250 P Recommended Practice in Emergency Service Organization Risk Management ...................................... 1250-1 1407 N Standard for Fire Service Rapid Intervention Crews .................................................................................. 1407-1 1410 P Standard on Training for Initial Emergency Scene Operations .................................................................. 1410-1 1452 P Guide for Training Fire Service Personnel to Conduct Dwelling Fire Safety Surveys ............................. 1452-1 1581 P Standard on Fire Department Infection Control Program .......................................................................... 1581-1 1600 C Standard on Disaster/Emergency Management and Business Continuity Programs ................................. 1600-1 1620 C Recommended Practice for Pre-Incident Planning ..................................................................................... 1620-1 1801 N Standard on Thermal Imagers for the Fire Service ..................................................................................... 1801-1 1931 P Standard for Manufacturer’s Design of Fire Department Ground Ladders ............................................... 1931-1 1932 P Standard on Use, Maintenance, and Service Testing of In-Service Fire Department Ground Ladders ............................................................................................................... 1932-1 1936 P Standard on Powered Rescue Tools ............................................................................................................ 1936-1 1952 N Standard on Surface Water Operations Protective Clothing and Equipment ........................................... 1952-1 1977 P Standard on Protective Clothing and Equipment for Wildland Fire Fighting ............................................ 1977-1 2010 P Standard for Fixed Aerosol Fire-Extinguishing Systems ........................................................................... 2010-1

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2009 Fall Revision Cycle ROP Committees Reporting

Type Action Page No. Aerosol Extinguishing Technology 2010 Standard for Fixed Aerosol Fire-Extinguishing Systems P 2010-1 Aircraft Maintenance Operations 410 Standard on Aircraft Maintenance P 410-1 Aircraft Rescue and Fire Fighting 405 Standard for the Recurring Proficiency of Airport Fire Fighters P 405-1 408 Standard for Aircraft Hand Portable Fire Extinguishers P 408-1 422 Guide for Aircraft Accident/Incident Response Assessment P 422-1 Airport Facilities 409 Standard on Aircraft Hangars P 409-1 423 Standard for Construction and Protection of Aircraft Engine Test Facilities P 423-1 Building Systems 900 Building Energy Code P 900-1 Chimneys, Fireplaces, and Venting Systems for Heat-Producing Appliances 211 Standard for Chimneys, Fireplaces, Vents, and Solid Fuel−Burning Appliances P 211-1 Cultural Resources 914 Code for Fire Protection of Historic Structures P 914-1 Electric Generating Plants 850 Recommended Practice for Fire Protection for Electric Generating Plants and High

Voltage Direct Current Converter Stations P 850-1

851 Recommended Practice for Fire Protection for Hydroelectric Generating Plants P 851-1 853 Standard for the Installation of Stationary Fuel Cell Power Systems P 853-1 Electrical Equipment Maintenance 70B Recommended Practice for Electrical Equipment Maintenance P 70B-1 Emergency Management and Business Continuity 1600 Standard on Disaster/Emergency Management and Business Continuity Programs C 1600-1 Emergency Service Organization Risk Management 1201 Standard for Providing Emergency Services to the Public C 1201-1 1250 Recommended Practice in Emergency Service Organization Risk Management P 1250-1 Explosives 495 Explosive Materials Code P 495-1 498 Standard for Safe Havens and Interchange Lots for Vehicles Transporting Explosives R 498-1 Fire and Emergency Services Protective Clothing and Equipment Electronic Safety Equipment 1801 Standard on Thermal Imagers for the Fire Service N 1801-1 Special Operations Protective Clothing and Equipment 1952 Standard on Surface Water Operations Protective Clothing and Equipment N 1952-1 Wildland Fire Fighting Protective Clothing and Equipment 1977 Standard on Protective Clothing and Equipment for Wildland Fire Fighting P 1977-1 Fire Department Ground Ladders 1931 Standard for Manufacturer’s Design of Fire Department Ground Ladders P 1931-1 1932 Standard on Use, Maintenance, and Service Testing of In-Service Fire Department

Ground Ladders P 1932-1

Fire Department Rescue Tools 1936 Standard on Powered Rescue Tools P 1936-1

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Fire Protection for Nuclear Facilities 804 Standard for Fire Protection for Advanced Light Water Reactor Electric Generating

Plants P 804-1

805 Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants

P 805-1

806 Performance-Based Standard for Fire Protection for Advanced Nuclear Reactor Electric Generating Plants

N 806-1

Fire Risk Assessment Methods 551 Guide for the Evaluation of Fire Risk Assessments P 551-1 Fire Service Occupational Safety and Health 1581 Standard on Fire Department Infection Control Program P 1581-1 Fire Service Training 13E Recommended Practice for Fire Department Operations in Properties Protected by

Sprinkler and Standpipe Systems P 13E-1

1407 Standard for Fire Service Rapid Intervention Crews N 1407-1 1410 Standard on Training for Initial Emergency Scene Operations P 1410-1 1452 Guide for Training Fire Service Personnel to Conduct Dwelling Fire Safety Surveys P 1452-1 Fire Tests 255 Standard Method of Test of Surface Burning Characteristics of Building Materials W 255-1 276 Standard Method of Fire Test for Determining the Heat Release Rate of Roofing

Assemblies with Combustible Above-Deck Roofing Components N 276-1

701 Standard Methods of Fire Tests for Flame Propagation of Textiles and Films P 701-1 Foam 11 Standard for Low-, Medium-, and High-Expansion Foam P 11-1 Forest and Rural Fire Protection 1150 Standard on Foam Chemicals for Fires in Class A Fuels P 1150-1 Handling and Conveying of Dusts, Vapors, and Gases 91 Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and

Noncombustible Particulate Solids P 91-1

Industrial Trucks 505 Fire Safety Standard for Powered Industrial Trucks Including Type Designations, Areas

of Use, Conversions, Maintenance, and Operations P 505-1

Internal Combustion Engines 37 Standard for the Installation and Use of Stationary Combustion Engines and Gas

Turbines P 37-1

Laboratories Using Chemicals 45 Standard on Fire Protection for Laboratories Using Chemicals P 45-1 Loss Prevention Procedures and Practices 600 Standard on Industrial Fire Brigades R 600-1 601 Standard for Security Services in Fire Loss Prevention R 601-1 Mining Facilites 120 Standard for Fire Prevention and Control in Coal Mines P 120-1 122 Standard for Fire Prevention and Control in Metal/Nonmetal Mining and Metal Mineral

Processing Facilities P 122-1

Oxygen-Enriched Atmospheres 53 Recommended Practice on Materials, Equipment, and Systems Used in Oxygen-Enriched

Atmospheres P 53-1

Portable Fire Extinguishers 10 Standard for Portable Fire Extinguishers P 10-1

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Pre-Incident Planning

1620 Recommended Practice for Pre-Incident Planning C 1620-1 Professional Qualifications Fire Fighter Professional Qualifications 1003 Standard for Airport Fire Fighter Professional Qualifications P 1003-1 Public Fire Educator Professional Qualifications 1035 Standard for Professional Qualifications for Public Fire and Life Safety Educator P 1035-1 Smoke Management Systems 204 Standard for Smoke and Heat Venting P 204-1 Standpipes 14 Standard for the Installation of Standpipe and Hose Systems P 14-1 Subterranean Spaces 520 Standard on Subterranean Spaces P 520-1 Tank Leakage and Repair Safeguards 326 Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair P 326-1 329 Recommended Practice for Handling Releases of Flammable and Combustible Liquids

and Gases P 329-1

Water Additives for Fire Control and Vapor Mitigation 18 Standard on Wetting Agents P 18-1 Water-Cooling Towers 214 Standard on Water-Cooling Towers P 214-1 Water Mist Fire Suppression Systems 750 Standard on Water Mist Fire Protection Systems P 750-1

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Key to Proposal Headings

The first line of every proposal includes the following information:

Document No.

Proposal No.

Log No.

Paragraph Reference

Committee Action

101 6 38 3.4 Accept Example: 101-6 Log #38 Final Action: Accept (3.4)

TYPES OF ACTION

P Partial Revision C Complete Revision N New Document R Reconfirmation W Withdrawal

The following classifications apply to Committee members and represent their principal interest in the activity of the Committee. 1. M Manufacturer: A representative of a maker or marketer of a product, assembly, or system, or portion thereof,

that is affected by the standard. 2. U User: A representative of an entity that is subject to the provisions of the standard or that voluntarily uses the

standard. 3. IM Installer/Maintainer: A representative of an entity that is in the business of installing or maintaining a product,

assembly, or system affected by the standard. 4. L Labor: A labor representative or employee concerned with safety in the workplace. 5. RT Applied Research/Testing Laboratory: A representative of an independent testing laboratory or independent

applied research organization that promulgates and/or enforces standards. 6. E Enforcing Authority: A representative of an agency or an organization that promulgates and/or enforces

standards. 7. I Insurance: A representative of an insurance company, broker, agent, bureau, or inspection agency. 8. C Consumer: A person who is or represents the ultimate purchaser of a product, system, or service affected by the

standard, but who is not included in (2). 9. SE Special Expert: A person not representing (1) through (8) and who has special expertise in the scope of the

standard or portion thereof. NOTE 1: “Standard” connotes code, standard, recommended practice, or guide. NOTE 2: A representative includes an employee. NOTE 3: While these classifications will be used by the Standards Council to achieve a balance for Technical Committees, the Standards Council may determine that new classifications of member or unique interests need representation in order to foster the best possible Committee deliberations on any project. In this connection, the Standards Council may make such appointments as it deems appropriate in the public interest, such as the classification of “Utilities” in the National Electrical Code Committee. NOTE 4: Representatives of subsidiaries of any group are generally considered to have the same classification as the parent organization.

vii

FORM FOR COMMENTS ON NFPA REPORT ON PROPOSALS 2009 FALL REVISION CYCLE

FINAL DATE FOR RECEIPT OF COMMENTS: 5:00 pm EST, March 6, 2009

For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org/codes.

For technical assistance, please call NFPA at 1-800-344-3555.

FOR OFFICE USE ONLY

Log #:

Date Rec’d:

Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: If choosing the download option, you must view the ROP/ROC from our website; no copy will be sent to you.)

Date 8/1/200X Name John B. Smith Tel. No. 253-555-1234

Company Email

Street Address 9 Seattle St. City Tacoma State WA Zip 98402

***If you wish to receive a hard copy, a street address MUST be provided. Deliveries cannot be made to PO boxes.

Please indicate organization represented (if any) Fire Marshals Assn. of North America

1. (a) NFPA Document Title National Fire Alarm Code NFPA No. & Year NFPA 72, 200X ed.

(b) Section/Paragraph 4.4.1.1

2. Comment on Proposal No. (from ROP): 72-7

3. Comment Recommends (check one): new text revised text deleted text

4. Comment (include proposed new or revised wording, or identification of wording to be deleted): [Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording).]

Delete exception.

5. Statement of Problem and Substantiation for Comment: (Note: State the problem that would be resolved by your recommendation; give the specific reason for your Comment, including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.)

A properly installed and maintained system should be free of ground faults. The occurrence of one or more ground faults should be required to cause a ‘trouble’ signal because it indicates a condition that could contribute to future malfunction of the system. Ground fault protection has been widely available on these systems for years and its cost is negligible. Requiring it on all systems will promote better installations, maintenance and reliability.

6. Copyright Assignment

(a) I am the author of the text or other material (such as illustrations, graphs) proposed in this Comment.

(b) Some or all of the text or other material proposed in this Comment was not authored by me. Its source is as follows (please identify which material and provide complete information on its source):

I agree that any material that I author, either individually or with others, in connection with work performed by an NFPA Technical Committee shall be considered to be works made for hire for the NFPA. To the extent that I retain any rights in copyright as to such material, or as to any other material authored by me that I submit for the use of an NFPA Technical Committee in the drafting of an NFPA code, standard, or other NFPA document, I hereby grant and assign all and full rights in copyright to the NFPA. I further agree and acknowledge that I acquire no rights in any publication of the NFPA and that copyright and all rights in materials produced by NFPA Technical Committees are owned by the NFPA and that the NFPA may register copyright in its own name.

Signature (Required)

PLEASE USE SEPARATE FORM FOR EACH COMMENT • email: [email protected] • NFPA Fax: (617) 770-3500 Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471 10/31/2008

viii

FORM FOR COMMENTS ON NFPA REPORT ON PROPOSALS 2009 FALL REVISION CYCLE

FINAL DATE FOR RECEIPT OF COMMENTS: 5:00 pm EST, March 6, 2009

For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org/codes.

For technical assistance, please call NFPA at 1-800-344-3555.

FOR OFFICE USE ONLY

Log #:

Date Rec’d:

Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: If choosing the download option, you must view the ROP/ROC from our website; no copy will be sent to you.)

Date Name Tel. No.

Company Email

Street Address City State Zip

***If you wish to receive a hard copy, a street address MUST be provided. Deliveries cannot be made to PO boxes.

Please indicate organization represented (if any)

1. (a) NFPA Document Title NFPA No. & Year

(b) Section/Paragraph

2. Comment on Proposal No. (from ROP):

3. Comment Recommends (check one): new text revised text deleted text

4. Comment (include proposed new or revised wording, or identification of wording to be deleted): [Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording).]

5. Statement of Problem and Substantiation for Comment: (Note: State the problem that would be resolved by your recommendation; give the specific reason for your Comment, including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.)

6. Copyright Assignment

(a) I am the author of the text or other material (such as illustrations, graphs) proposed in this Comment.

(b) Some or all of the text or other material proposed in this Comment was not authored by me. Its source is as follows (please identify which material and provide complete information on its source):

I agree that any material that I author, either individually or with others, in connection with work performed by an NFPA Technical Committee shall be considered to be works made for hire for the NFPA. To the extent that I retain any rights in copyright as to such material, or as to any other material authored by me that I submit for the use of an NFPA Technical Committee in the drafting of an NFPA code, standard, or other NFPA document, I hereby grant and assign all and full rights in copyright to the NFPA. I further agree and acknowledge that I acquire no rights in any publication of the NFPA and that copyright and all rights in materials produced by NFPA Technical Committees are owned by the NFPA and that the NFPA may register copyright in its own name.

Signature (Required)

PLEASE USE SEPARATE FORM FOR EACH COMMENT • email: [email protected] • NFPA Fax: (617) 770-3500 Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471

10/31/2008

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Sequence of Events Leading to Issuance of an NFPA Committee Document

Step 1 Call for Proposals

▼ Proposed new document or new edition of an existing document is entered into one of two yearly revision cycles, and a Call for Proposals is published.

Step 2 Report on Proposals (ROP)

▼ Committee meets to act on Proposals, to develop its own Proposals, and to prepare its Report.

▼ Committee votes by written ballot on Proposals. If two-thirds approve, Report goes forward. Lacking two-thirds approval, Report returns to Committee.

▼ Report on Proposals (ROP) is published for public review and comment.

Step 3 Report on Comments (ROC)

▼ Committee meets to act on Public Comments to develop its own Comments, and to prepare its report.

▼ Committee votes by written ballot on Comments. If two-thirds approve, Report goes forward. Lacking two-thirds approval, Report returns to Committee.

▼ Report on Comments (ROC) is published for public review.

Step 4 Technical Committee Report Session

▼ “Notices of intent to make a motion” are filed, are reviewed, and valid motions are certified for presentation at the Technical Committee Report Session. (“Consent Documents” that have no certified motions bypass the Technical Committee Report Session and proceed to the Standards Council for issuance.)

▼ NFPA membership meets each June at the Annual Meeting Technical Committee Report Session and acts on Technical Committee Reports (ROP and ROC) for documents with “certified amending motions.”

▼ Committee(s) vote on any amendments to Report approved at NFPA Annual Membership Meeting.

Step 5 Standards Council Issuance

▼ Notification of intent to file an appeal to the Standards Council on Association action must be filed within 20 days of the NFPA Annual Membership Meeting.

▼ Standards Council decides, based on all evidence, whether or not to issue document or to take other action, including hearing any appeals.

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The Technical Committee Report Session of the NFPA Annual Meeting

The process of public input and review does not end with the publication of the ROP and ROC. Following the completion of the Proposal and Comment periods, there is yet a further opportunity for debate and discussion through the Technical Committee Report Sessions that take place at the NFPA Annual Meeting.

The Technical Committee Report Session provides an opportunity for the final Technical Committee Report (i.e., the ROP and ROC) on each proposed new or revised code or standard to be presented to the NFPA membership for the debate and consideration of motions to amend the Report. The specific rules for the types of motions that can be made and who can make them are set forth in NFPA’s rules, which should always be consulted by those wishing to bring an issue before the membership at a Technical Committee Report Session. The following presents some of the main features of how a Report is handled.

What Amending Motions Are Allowed. The Technical Committee Reports contain many Proposals and Comments that the Technical Committee has rejected or revised in whole or in part. Actions of the Technical Committee published in the ROP may also eventually be rejected or revised by the Technical Committee during the development of its ROC. The motions allowed by NFPA rules provide the opportunity to propose amendments to the text of a proposed code or standard based on these published Proposals, Comments, and Committee actions. Thus, the list of allowable motions include motions to accept Proposals and Comments in whole or in part as submitted or as modified by a Technical Committee action. Motions are also available to reject an accepted Comment in whole or part. In addition, Motions can be made to return an entire Technical Committee Report or a portion of the Report to the Technical Committee for further study.

The NFPA Annual Meeting, also known as the NFPA World Safety Conference & Exposition®, takes place in June of each year. A second Fall membership meeting was discontinued in 2004, so the NFPA Technical Committee Report Session now runs once each year at the Annual Meeting in June.

Who Can Make Amending Motions. NFPA rules also define those authorized to make amending motions. In many cases, the maker of the motion is limited by NFPA rules to the original submitter of the Proposal or Comment or his or her duly authorized representative. In other cases, such as a Motion to Reject an accepted Comment, or to Return a Technical Committee Report or a portion of a Technical Committee Report for Further Study, anyone can make these motions. For a complete explanation, NFPA rules should be consulted.

The Filing of a Notice of Intent to Make a Motion. Before making an allowable motion at a Technical Report Session, the intended maker of the motion must file, in advance of the session, and within the published deadline, a Notice of Intent to Make a Motion. A Motions Committee appointed by the Standards Council then reviews all notices and certifies all amending motions that are proper. The Motions Committee can also, in consultation with the makers of the motions, clarify the intent of the motions and, in certain circumstances, combine motions that are dependent on each other together so that they can be made in one single motion. A Motions Committee report is then made available in advance of the meeting listing all certified motions. Only these Certified Amending Motions, together with certain allowable Follow-Up Motions (that is, motions that have become necessary as a result of previous successful amending motions) will be allowed at the Technical Committee Report Session.

Consent Documents. Often there are codes and standards up for consideration by the membership that will be noncontroversial and no proper Notices of Intent to Make a Motion will be filed. These “Consent Documents” will bypass the Technical Committee Report Session and head straight to the Standards Council for issuance. The remaining Documents are then forwarded to the Technical Committee Report Session for consideration of the NFPA membership.

xi

Action on Motions at the Technical Committee Report Session. In order to actually make a Certified Amending Motion at the Technical Committee Report Session, the maker of the motion must sign in at least an hour before the session begins. In this way a final list of motions can be set in advance of the session. At the session, each proposed document up for consideration is presented by a motion to adopt the Technical Committee Report on the document. Following each such motion, the presiding officer in charge of the session opens the floor to motions on the document from the final list of Certified Amending Motions followed by any permissible Follow-Up Motions. Debate and voting on each motion proceeds in accordance with NFPA rules. NFPA membership is not required in order to make or speak to a motion, but voting is limited to NFPA members who have joined at least 180 days prior to the session and have registered for the meeting. At the close of debate on each motion, voting takes place, and the motion requires a majority vote to carry. In order to amend a Technical Committee Report, successful amending motions must be confirmed by the responsible Technical Committee, which conducts a written ballot on all successful amending motions following the meeting and prior to the Document being forwarded to the Standards Council for issuance.

Standards Council Issuance

One of the primary responsibilities of the NFPA Standards Council, as the overseer of the NFPA codes and standards development process, is to act as the official issuer of all NFPA codes and standards. When it convenes to issue NFPA documents, it also hears any appeals related to the document. Appeals are an important part of assuring that all NFPA rules have been followed and that due process and fairness have been upheld throughout the codes and standards development process. The Council considers appeals both in writing and through the conduct of hearings at which all interested parties can participate. It decides appeals based on the entire record of the process as well as all submissions on the appeal. After deciding all appeals related to a document before it, the Council, if appropriate, proceeds to issue the document as an official NFPA code or standard. Subject only to limited review by the NFPA Board of Directors, the decision of the Standards Council is final, and the new NFPA code or standard becomes effective twenty days after Standards Council issuance.

750-1

Report on Proposals F2009 — Copyright, NFPA NFPA 750 Report of the Committee on

Water Mist Fire Suppression Systems

Larry W. Owen, ChairDooley Tackaberry, Inc., TX [IM]

Rebecca Anderson, Marsh USA Inc., OR [I] John F. Devlin, Schirmer Engineering Corporation, MD [I] Randall Eberly, US Coast Guard, DC [E] Joshua M. Fleischer, AREVA Group, CA [U] Rep. Edison Electric Institute William A. Froh, US Department of Energy, DC [U] Victor M. Gameiro, Marioff, Incorporated, MD [M] Raymond N. Hansen, US Department of the Air Force, FL [E] Mary P. Hunstad, US Department of the Navy, DC [E] William E. Janz, XL Global Asset Protection Services, IL [I] Anton K. N. Jensen, Jr., Liberty Mutual Property, IL [I] Rep. Property Casualty Insurers Association of America Robert Kasiski, FM Global, MA [I] Andrew Kim, National Research Council of Canada, Canada [RT] Max Lakkonen, FOGTEC Fire Protection, Germany [M] Rep. International Water Mist Association George E. Laverick, Underwriters Laboratories Inc., IL [RT] David J. LeBlanc, Tyco Fire & Building Products, RI [M] () Rep. Tyco International Robert J. Libby, The RJA Group, Inc., MD [SE] Kerry L. Madigan, Scandaliato Design Group, Inc., CO [IM] Rep. American Fire Sprinkler Association Jack R. Mawhinney, Hughes Associates, Inc., MD [SE] Jason Pope, National Automatic Sprinkler Fitters LU 669, MD [L] Rep. United Assn. of Journeymen & Apprentices of the Plumbing & Pipe Fitting Industry William J. Reilly, Victaulic Company of America, PA [M] Michael B. Stevens, National Aeronautics & Space Administration, FL [U] Brad T. Stilwell, Fike Corporation, MO [M] Victoria B. Valentine, National Fire Sprinkler Association, Inc., NY [M] Xiaobo Yao, Exponent, Inc., MD [SE] Thomas F. Ziegler, Verizon, NJ [U]

Alternates

Kerry M. Bell, Underwriters Laboratories Inc., IL [RT] (Alt. to George E. Laverick) James G. Bisker, US Department of Energy, DC [U] (Alt. to William A. Froh) Joseph A. Cappuccio, The RJA Group, Inc., VA [SE] (Alt. to Robert J. Libby)

Bruce H. Clarke, XL Global Asset Protection, LLC, NC [I] (Alt. to William E. Janz) Robert L. Darwin, Hughes Associates, Inc., MD [SE] (Alt. to Jack R. Mawhinney)Eric W. Haberichter, Kidde/Chemetron Fire Systems, IL [IM] (Voting Alt. to FSSA Rep.) Rick J. Jackson, Jackson Associates, Inc., MI [IM] (Alt. to Kerry L. Madigan) Earl D. Neargarth, Fike Corporation, MO [M] (Alt. to Brad T. Stilwell) Erin A. M. Oneisom, US Department of the Air Force, AE [E] (Alt. to Raymond N. Hansen) Thomas M. Suehr, Liberty Mutual Property, MA [I] (Alt. to Anton K. N. Jensen, Jr.) Maarit Tuomisaari, Marioff Corporation Oy, Finland [M] (Alt. to Victor M. Gameiro) Hong-Zeng Yu, FM Global, MA [I] (Alt. to Robert Kasiski)

Nonvoting

Douglas J. Pickersgill, Fire and Safety Systems, Australia [SE] Woodrow W. Stratton, US Department of Homeland Security, MD [C] Fernando Vigara, APICI, Spain [SE] Lawrence A. McKenna, Jr., US Department of Homeland Security, MD [C] (Alt. to Woodrow W. Stratton)

Staff Liaison: James D. Lake

Committee Scope: This Committee shall have primary responsibility for documents on the design, installation, and maintenance of systems which use a water mist for the control, suppression, or extinguishment of fire.

This list represents the membership at the time the Committee was balloted on the text of this edition. Since that time, changes in the membership may have occurred. A key to classifications is found at the front of this book.

The Report of the Technical Committee on Water Mist Fire Suppression Systems is presented for adoption.

This Report was prepared by the Technical Committee on Water Mist Fire Suppression Systems and proposes for adoption, amendments to NFPA 750, Standard on Water Mist Fire Protection Systems, 2006 edition. NFPA 750-2006 is published in Volume 9 of the 2008 National Fire Codes and in separate pamphlet form.

This Report has been submitted to letter ballot of the Technical Committee on Water Mist Fire Suppression Systems, which consists of 27 voting mem-bers. The results of the balloting, after circulation of any negative votes, can be found in the report.

750-2

Report on Proposals F2009 — Copyright, NFPA NFPA 750 _______________________________________________________________ 750-1 Log #CP20 Final Action: Accept (Entire Document) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Review entire document to: 1) Update any extracted material by preparing separate proposals to do so, and 2) review and update references to other organizations documents, by preparing proposal(s) as required. Substantiation: To conform to the NFPA Regulations Governing Committee Projects. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-2 Log #19 Final Action: Reject (2.3) ________________________________________________________________ Submitter: Max Lakkonen, FOGTEC Fire Protection Recommendation: Add as follows: APSAD D2--Water Mist--Guide for the Installation of Water Mist Fire Protection Systems, November 2007 CNPP France CEN TS 14972 Standard for Water Mist--Installation and Design Substantiation: None given Committee Meeting Action: Reject Committee Statement: The references cannot be placed in Chapter 2 because they are not directly referenced in the standard. The committee recommends that the submitter review the documents and submit a comment locating the information in an appropriate Annex. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-3 Log #10 Final Action: Accept (2.3.7) _______________________________________________________________ Submitter: Bob Eugene, Underwriters Laboratories Inc. Recommendation: Revise text as follows: 2.3.7 ULC Publications. Underwriters’ Laboratories of Canada, 7 Underwriters Road, Toronto, Ontario M1R 3B4, Canada. CAN/ULC S524-01 06, Standard for the Installation of Fire Alarm Systems, 2001 2006. CAN/ULC S529-02, Standard for Smoke Detectors for Fire Alarm Systems, 2002. Substantiation: Updated referenced standards to include the most recent revisions. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-4 Log #2 Final Action: Accept in Principle (3.3.x Escutcheon Plates (New) ) _______________________________________________________________ Submitter: Robert Bourke, Northeastern Regional Fire Code Development Committee Recommendation: Add Escutcheon Plates to Definitions: 3.3.x Escutcheon Plates is a protective or ornamental plate or flange. Substantiation: 7.2.9.1 and 7.2.9.2 addressed Escutcheon Plates but no definition is provided. Definition proposed is modified from Webster. Provides guidance to the user and ahj on what an escutcheon plate is. Committee Meeting Action: Accept in Principle Revise proposal as follows: 3.3.x Escutcheon. A protective or ornamental plate or flange. Committee Statement: The revised definition more accurately describes the term and where they are used. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-5 Log #15 Final Action: Accept in Principle (3.3.17 Supervision) _______________________________________________________________ Submitter: Matthew Daelhousen, FM Global Recommendation: Add new text to read as follows: 3.3.17 Supervision. A visual and audible alarm signal to indicate when the system is in operation or when a condition that would impair the satisfactory operation of the system exists. Substantiation: Addition of the definition would address confusion regarding

what supervision entails. Note that the ensuing definitions would need to be renumbered to accommodate this definition. This definition is taken from NFPA 13, with slight modifications to allow the definition to be more general. Committee Meeting Action: Accept in Principle 3.3.17 Supervision. A means of monitoring system status and indicating abnormal conditions.[NFPA 25] Committee Statement: The revised definition is extracted from NFPA 25 and correlates with the visual supervision permitted in 7.8.1.8.1. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-6 Log #CP1 Final Action: Accept (4.1.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Move 4.1.1 to the first paragraph of Annex for 4.1. Renumber the rest of the chapter accordingly. Substantiation: This paragraph contains no requirements, but is a commentary on the function of water mist and a water mist system. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-7 Log #1 Final Action: Reject (4.1.2.1) _______________________________________________________________ Submitter: Jon Nisja, Northcentral Regional Fire Code Development Committee Recommendation: Revise to read: 4.1.2.1 Water mist systems shall be permitted for use with a wide range of performance objectives, including the following but not limited to: (1) Fire extinguishment (2) Fire suppression (3) Fire control (4) Temperature control (5) Exposure protection Substantiation: The proposed text permits additional objectives that may not be currently listed. Committee Meeting Action: Reject Committee Statement: The current language does not limit the use of water mist systems to the 5 listed items. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-8 Log #CP2 Final Action: Accept (4.2.1, 4.2.2 and A.4.2.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Move 4.2.1 and 4.2.2 as the first two paragraphs of a new A.4.2. Revise current A.4.2.1 by deleting the last sentence and including it with the material from 4.2.1 and 4.2.2. Add an asterisk to 4.2 Safety. Renumber sub sections of 4.2 accordingly. Substantiation: These sections contain unenforceable language and address issues that are beyond the scope of NFPA 750, but need to be mentioned in the Annex. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-9 Log #CP3 Final Action: Accept (4.2.4) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Delete Section and renumber remainder of Chapter accordingly. Substantiation: This paragraph is not necessary in Chapter 4. Section 5.9 addresses pumps for water mist system and references NFPA 20 for further requirements. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J.

750-3

Report on Proposals F2009 — Copyright, NFPA NFPA 750 _______________________________________________________________ 750-10 Log #CP4 Final Action: Accept (4.2.5.2) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Delete paragraph Substantiation: This issue is addressed in 4.2.5.1. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-11 Log #CP5 Final Action: Accept (5.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows: 5.1 General. This chapter shall provides the requirements for the correct use of water mist system components. Substantiation: Editorial revision. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J.

_______________________________________________________________ 750-13 Log #CP7 Final Action: Accept (5.5.6, 5.5.6.1 and 5.5.6.2) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Change “power-driven” to “powder-driven” Substantiation: Editorial revision to correct term. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-14 Log #CP8 Final Action: Accept (5.9.1.5) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Delete Section. Substantiation: This is addressed in NFPA 20. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-15 Log #11 Final Action: Accept (5.10.1.1) _______________________________________________________________ Submitter: Bob Eugene, Underwriters Laboratories Inc. Recommendation: Revise text as follows: 5.10.1.1 Installation, Testing, and Maintenance Standards. Detection, actuation, alarm, and control systems shall be installed, tested, and maintained in accordance with the following protective signaling systems standards as applicable: (1) NFPA 70, National Electrical Code (2) NFPA 72, National Fire Alarm Code (3) CAN/ULC S524-01 06, Standard for the Installation of Fire Alarm Systems (in Canada) (4) CAN/ULC S529-02, Standard for the Installation of Fire Alarm Systems (in Canada) Substantiation: Updated referenced standards to include the most recent revisions. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-16 Log #CP9 Final Action: Accept (5.11 and A.5.11) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Move text in 5.11 and A.5.11 to existing Annex for 6.2.3. Substantiation: The provision is unenforceable and is more appropriate in the discussion of zoned systems. Committee Meeting Action: Accept Number Eligible to Vote: 27

Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-17 Log #CP10 Final Action: Accept (6.2.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows: 6.2.1 Local-Application Systems. Local-application systems are shall be designed and installed to provide complete distribution of mist on or around the hazard or object to be protected. Substantiation: Editorial revision for enforceability and to provide more direction in the design of local application systems. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-18 Log #CP11 Final Action: Accept (6.4) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise the title of 6.4 as System Requirements and delete the rest of the section. Substantiation: This section contains the requirements for the various types of water mist systems. The list is redundant with the rest of the section so the title is all that is necessary. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-19 Log #CP12 Final Action: Accept (7.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: 7.1 General. This chapter provides requirements for the correct installation of water mist system components. Substantiation: Editorial revision Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-20 Log #9 Final Action: Reject (7.2.5) _______________________________________________________________ Submitter: Jack R. Mawhinney, Hughes Associates, Inc. Recommendation: Add new material to sentence 7.2.5. 7.2.5 Obstructions to Nozzle Discharge. The location of nozzles with respect to obstructions shall be in accordance with the manufacturer’s listing, and with the articles 7,2.5.1 to 7.2.5.6. 7.2.5.1 Water mist nozzles shall be located so as to minimize obstructions to discharge as defined in articles 7.2.5.2 to 7.2.5.6 or additional nozzles shall be provided to ensure adequate coverage of the hazard. 7.2.5.2 [Extract 8.6.5.1.2(1), (2), and (3) in NFPA 13 2002, including figures and tables. Modify language to apply to automatic or non-automatic mist nozzles.] 7.2.5.3 Obstructions so Nozzle Discharge Pattern Development [Extract 8.6.5.2.1.1 to 8.6.5.2.1.10, including appendix notes, figures and tables, from NFPA 13-2002. Modify language to apply to automatic or non-automatic water mist nozzles.] 7.2.5.4 Suspended or Floor Mounted Vertical Obstructions [Extract 8.6.5.2.2 from NFPA 13-2002, including appendix notes, figures and tables. Modify language to apply to automatic or non-automatic water mist nozzles.] 7.2.5.5 Obstructions that Prevent Nozzle Discharge from Reaching the Hazard [Extract 8.6.5.3.1 to 8.6.5.3.5 from NFPA 13 2002, including appendix notes, figures and tables. Modify language to apply to automatic or non-automatic water mist nozzles.] 7.2.5.6 Vertical Change in Ceiling Elevation The spacing of nozzles with respect to vertical changes in ceiling elevation shall conform to Figure 7.2.5.6. [Extract Figure 8.8.4.1.1.4 from NFPA 13-2002.]

Sequence #12 was not used.

750-4

Report on Proposals F2009 — Copyright, NFPA NFPA 750 Substantiation: When the Committee drafted the original requirements regarding placing nozzles around obstructions, it was assumed that the listing laboratory and the manufacturer would include guidelines or rules for dealing with obstructions in the Design Installation Operations and Maintenance (DIOM) Manual. At the present time (2008) few if any manufacturers produce comprehensive rules that aid an installer in determining how to address obstructions. As a result, disputes and confusion arise in the field at the time of the acceptance testing, when it is discovered that spray is seriously obstructed. Since the DIOM manuals do not provide the necessary guidance, NFPA 750 must include guidelines. This is consistent with NFPA 13 - which includes detailed rules on how to place sprinklers with regard to obstructions - NFPA 13 does not assume that each sprinkler listing data sheet will cover the subject. The rules in NFPA 13 for placing nozzles near/above/below obstructions are clear and easy to apply. This proposal is to extract the obstruction tables and figures for standard sprinklers and pendent sprinklers from NFPA 13. This action will greatly enhance the ability to control the quality of installation of water mist nozzles and the reliability of the systems. This issue was studied by a Task Group during the 2003 to 2006 cycle, but the work was not finalized. It is proposed that the Task Group be reconstituted to continue work to resolve the concerns regarding obstructions. Committee Meeting Action: Reject Committee Statement: The proposal contains old extract references that require review for updating. The committee has reconstituted the Task Group formed during the last cycle to review this proposal and provide a comment during ROC stage. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-21 Log #CP22 Final Action: Reject (7.2.5) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise as follows:

ADD NEW MATERIAL TO SENTENCE 7.2.5.

7.2.5 * Obstructions to Nozzle Discharge Pattern Development.

7.2.5.1 The location of nozzles with respect to obstructions shall be in accordance with articles 7.2.5.1 to 7.2.5.6., unless the manufacturer’s listing provides explicit details permitting alternative minimum distances between nozzles and obstructions.

7.2.5.2 Where the characteristics of the spray cone from a water mist nozzle are such that distances to obstructions may be less than specified in this section, the alternative rules shall be stated in the Manufacturer’s Design, Installation, Operation and Maintenance document.

A-7.2.5 Spray that strikes obstructions too close to the nozzle will not fully atomize and a portion of the water mass will be removed from suspension in the space. Water mist that “plates out” on surfaces will not be available for heat absorption, radiation attenuation, or evaporation. Such losses diminish the extinguishing effectiveness of total flooding or local application systems for machinery spaces involving Class B fuels. For Class A fire scenarios where pre-wetting of combustibles is an important factor in preventing fire growth, obstructions to spray development prevent wetting of unburned materials and diminish the performance of the system. Nozzle locations must be shifted from their ideal uniformly spaced locations to avoid obstructions, to promote the discharge into the open volumes of the space and to avoid or reduce discharge against solid surfaces.

7-2.5.3* Performance Objective. Water mist nozzles shall be located so as to minimize obstructions to discharge as defined in articles 7.2.5.1 to 7.2.5.10 or additional nozzles shall be provided to ensure adequate coverage of the hazard.

A-7-2.5.3 Unlike standard sprinklers, water mist nozzles are produced with a variety of spray cone angles, spray velocity and projection distances. Therefore the allowable distances from obstruction in Table 7-2.5.3.1 are adjusted according to the spray cone angle of the nozzle.

7-2.5.3.1 Water mist nozzles shall be arranged to comply with Table 7-2.5.3.1 and Figures 7-2.5.3.1 (a), 7-2.5.3.1 (b) and 7-2.5.3.1.(c).

750-5

Report on Proposals F2009 — Copyright, NFPA NFPA 750

Table 7.2.5.3.1 Position of water mist nozzles to avoid obstructions to discharge. Revised by M. Hunstad Maximum allowable distance of tip of WM nozzle above bottom of obstruction (B), inches.

[B = A / Tan (Φ/2)]Distance nozzle to obstruction (A) Max. B (Std.

SprinklerΦ =

140 Deg ConeΦ =

120 Deg. ConeΦ =

90 Deg. ConeΦ =

70 Deg. ConeLess than 12-inches

00 0 0 0

12 inches to less than 18 inches2.5

4.4 6.9 12 17.1 (17)18 inches to less than 24 inches

3.56.6 10.4 18 25.7 (26)


8.7 13.9 (14) 24 34.3 (34)30 inches to less than 36 inches

7.510.9 17.3 (17) 30 42.8 (43)



1215.3 24.3 (24) 42 60

48 inches to less than 54 inches14


16.5 (17)19.7 31.2 (31) 54 77.1 (77)

60 inches and greater18

21.8 34.7 (35) 60 85.7 (86)

750-6


7-2.5.4 Water mist nozzles shall be permitted to be spaced on opposite sides of obstructions not exceeding 1.2 m (4-ft) in width provided the distance from the centerline of the obstruction to the nozzle does not exceed one-half the allowable distance permitted between nozzles as shown in Figure 7-2.5.4.

*

750-7

Report on Proposals F2009 — Copyright, NFPA NFPA 750 7.2.5.5 Vertical Changes in Ceiling Elevation. The spacing of nozzles with respect to vertical changes in ceiling elevation shall conform to Figure 7.2.5.5.

7.2.5.6 Nozzles shall be positioned such that they are located at a distance three times greater than the maximum dimension of an obstruction up to a maximum “a” dimension of 24-in (609-mm) (e.g., structural members, pipe, columns, and fixtures (see Figure 7.2.5.6.)

Exception no. 1: For total flooding application systems in enclosures, the clearances between nozzles and the obstructions shown shall be as specified in the manufacturers listing.

Exception no. 2. Water mist nozzles shall be permitted to be spaced on opposite sides of the obstruction provided the distance from the centerline of the obstruction to the water mist nozzles does not exceed one-half the allowable distance between nozzles.

Exception no. 3. Where the obstruction consists of open trusses (20 in (0.51 m) or greater apart [24-in on center], water mist nozzles shall be permitted to be located one-half the distance between the obstruction created by the truss provided that all truss members are not greater than 4-in. (102 mm) nominal in width.

Exception No. 4. Where the water mist nozzles are installed in the centerline of bar joists or a truss.

Exception No. 5. Piping to which an upright water mist nozzle is directly attached less than 3-in. (75-mm) in diameter.

Exception No. 6. Piping to which pendent nozzles are directly attached.

7-2.5.7 Obstructions located below water mist nozzles

7-2.5.7.1 Continuous or non-continuous obstructions that interrupt the water discharge in a horizontal plane more than 18-in. (457-mm) below the water

750-8

Report on Proposals F2009 — Copyright, NFPA NFPA 750 mist nozzle in a manner to limit the distribution from reaching the protected hazard shall comply with this section.

7-2.5.7.2 Water mist nozzles shall be installed under fixed obstructions over 4-ft (1.2-m) wide such as ducts, decks, elevated tanks, machinery platforms, cutting tables, and overhead doors.

Exception: Obstructions that are not fixed in place, such as conference tables.

7-2.5.7.3 Suspended or Floor Mounted Vertical Obstructions. The distance from sprinklers to privacy curtains, free standing partitions, room dividers, and similar obstructions (in light hazard occupancies) shall be in accordance with Table 7-2.5.7.3. and Figure 7-2.5.7.3

Table 7-2.5.7.3. Position of water mist nozzles relative to suspended or floor mounted obstructions. Horizontal distance to vertical obstruction (a) Minimum vertical distance below water mist nozzle (b)

140 Deg Cone 120 Deg cone 90 Deg cone 70 Deg cone6-inches or less

More than 6 inches to 9 inches

More than 9 in. to 12 in.





More than 30 in.

3 in.

4 in.

6 in.

8 in.

9.5 in.

12.5 in.

15.5 in.

18 in.

6 in.

8 in.

12 in.

16 in.

18 in.

24 in.

30 in.

26 in.

3 in.

4 in.

6 in.

8 in.

10 in.

12 in.

16 in.

18 in.

3 in.

4 in.

6 in.

8 in.

10 in.

12 in.

16 in.

18 in.?

7. Where an obstruction 18-inches or greater in width is located closer than 40-inches (1-m) below a nozzle and within the nominal spray cone of that nozzle, the nozzle shall be located so that the obstruction does not block more than 25 percent of the diameter of the spray cone at that vertical distance from the nozzle.

750-9


Table 7-2.5.7.4. Position of water mist nozzles located less than 40-inches above obstructions 18-in wide or wider. Minimum vertical distance below water mist nozzle (B min), in.

Width of Obstruction Located Below Nozzle 140 Deg cone 120 Deg cone 90 Deg cone 70 Deg cone18-inches or less

18 in. to less than 24 in.





13

17

22

26

31

35

21

28

35

40

36

40

See

Manuf’rs

Data

Sheet

7-2.5.8 Positioning water mist nozzles for horizontal discharge.

7-2.5.8.1 Position sidewall or nozzles designed for horizontal discharge in accordance with Figure 7-2.5.8.1. and Table 7-5.2.8.2.

750-10


Figure 7-2.5.8.1. Position of sidewall or horizontally discharging water mist nozzle with respect to obstructions (see Table 7-5.2.7.x.x.).

Table 7-2.5.8.1. Position of sidewall or horizontally discharging water mist nozzle with respect to obstructions. Horizontal distance from sidewall nozzle to verti-cal obstruction (a)

Min. b (Std. sprin-klers)

Maximum allowable distance of water mist nozzle above bot-tom of obstruction (b)

SSU Sprinkler Sidewall8-ft to less than 10-ft

10 ft to less than 11 ft

11-ft to less than 12-ft






17-ft or greater

1 in.

2 in.

3 in.

4 in.

6 in.

7 in.

9 in.

11 in.

14 in.

1 in.

2 in.

3 in.

4 in.

6 in.

7 in.

9 in.

11 in.

14 in.

7-2.5.8.2 Nozzles discharging horizontally shall be positioned not less than 30-in (0.75-m) from a parallel wall, and not less than 3 times the dimension of any vertical obstruction in the spray path, as shown in Figure 7-2.5.8.2.

750-11


a pressure gauge, and a high/low pressure supervisory alarm set at the values identified in the manufacturer’s listing. 7.5.5.6.2 Storage containers that become pressurized only during system activation shall not require high/low pressure supervisory alarms. Substantiation: This change will bring the requirements for high pressure storage containers to be equal to those for intermediate and low pressure containers. Committee Meeting Action: Reject Committee Statement: Paragraph 7.8.5.1 already requires a pressure gauge. This proposal imposes requirements on high-pressure cylinders without providing substantiation why these additional supervisory devices should be required on high-pressure cylinders. Number Eligible to Vote: 27 Ballot Results: Affirmative: 21 Negative: 1 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. Explanation of Negative: KASISKI, R.: I am in agreement with the submitter of the Proposals as his intent is to increase the reliability of water mist systems which use high pressure cylinders by identifying a “Trouble” or abnormal condition. A “Trouble” or abnormal condition makes the system ineffective for fire extinguishment. A water mist fire protection reliability study has been conducted by FM Global Research. More common failure contributors identified in the study are empty water tanks and low gas propellant pressure, which are typically associated with high pressure storage cylinders. These failure contributors are associated with human error in the maintenance of water mist systems. These finding are published in the Importance Analysis section of the Water Mist Fire Protection Reliability Study, presented by Shuzhen Xu and David Fuller at the 2008 Fire Protection Research Foundation, Suppression and Detection Research and Applications. Supporting material available at NFPA The usage of a supervision alarm would increase the reliability of the system. This would be a prudent requirement given the high value of the assets and intervening of business interruption the water mist system is providing fire protection too. The cost to implement is relatively inexpensive, provided the manufacturer of the equipment incorporates it into their design. There is currently one pressure gauge manufacturer which has a pressure gauge and a pressure switch incorporated into one device. The proposed requirement does not require the specific cylinder to be identified, but supervision to identify of the “Trouble” or abnormal condition. It is agreed though the Proposal is redundant with the identification of a

Substantiation: This proposal is the work of a Task Group formed during the previous revision cycle. Committee Meeting Action: Reject Committee Statement: The Technical Committee rejects this proposal because it is incomplete but recognizes that it is progressing to a point of acceptance. The Technical Committee has formed a task group to complete the provisions and submit a comment. In rejecting this proposal it is the intent of the committee to have this more recent information published for others to review and comment on as well. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-22 Log #CP21 Final Action: Accept (7.2.9) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise sections as follows 7.2.9 Escutcheons Plates. 7.2.9.1 Escutcheons plates used in a recessed or flush-type nozzle installation shall be a part of a listed nozzle assembly. 7.2.9.2 Nonmetallic escutcheons plates shall be listed Substantiation: The word plates is not necessary in reference to these components. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-23 Log #CP13 Final Action: Accept (7.5.4.2) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Delete paragraph. Substantiation: Unenforceable language. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-24 Log #16 Final Action: Reject (7.5.5.6) _______________________________________________________________ Submitter: Matthew Daelhousen, FM Global Recommendation: Add new text to read as follows: 7.5.5.6 Supervision. 7.5.5.6.1 Each pressure container shall be equipped with a liquid level gauge,

750-12

Report on Proposals F2009 — Copyright, NFPA NFPA 750 manifold, a single pressure gauge on the pressurized section of the manifold shall be permitted for indicating the pressure in all the gas cylinders. Committee Statement: The revised language meets the submitter’s intent and revises language editorially. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-29 Log #CP16 Final Action: Accept (7.9.1.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows. 7.9.1.1 Electrical equipment associated with water mist systems shall be installed in accordance with the requirements of NFPA 70, National Electrical Code. Substantiation: Present language states that the water mist system must be installed in accordance with NFPA 70. This is clearly not the intent. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-30 Log #CP17 Final Action: Accept (7.9.4.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows: 7.9.4.1 Unless the requirements of 7.9.4.2 are met, a means of automatic operation of the water mist system shall be provided. 7.9.4.1.1 This Automatic operation shall be accomplished by means of automatic nozzles (independently thermally activated), automatic group control valves, or an independent automatic fire detection system, coupled with a listed system activation panel. Substantiation: Editorial revision breaking out two requirements. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-31 Log #4 Final Action: Reject (7.10) _______________________________________________________________ Submitter: William J. Reilly, Victaulic Company Recommendation: Add new text to read as follows: 7.10.5 In open head systems, the test connection shall be located upstream from the control valve. 7.10.6 In twin fluid systems employing open heads, individual test connections shall be provided for the water and atomizing fluid upstream from their respective control valves. Substantiation: The current paragraph 7.10 is suitable for closed head systems but does not accommodate open head systems. The proposed new language will provide guidance on the appropriate location for test connections on open head systems for both single and twin fluid agents. Committee Meeting Action: Reject Committee Statement: The substantiation provided is not sufficient to require the added language. Typically the test connection needs to be located at the hydraulically most remote point as stated in 7.10.1. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-32 Log #CP19 Final Action: Reject (7.10.2) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows: 7.10.2 The test connection shall be capable of achieving the flow and pressure conditions established in the design of the system. Substantiation: This proposal identifies several conflicting issues with regard to the function of the test connection such as whether its purpose is for alarm testing, pipe continuity or water supply or all three. Committee Meeting Action: Reject

pressure gauge and is covered in the requirements of paragraph 7.8.5.1. It is also acknowledged for high pressure cylinders the usage of a load cell may be more appropriate than a liquid level indicator. _______________________________________________________________ 750-25 Log #CP14 Final Action: Accept (7.5.7 and 7.5.8) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Renumber these sections as 7.5.6.6 and 7.5.6.7. Substantiation: These two sections are associated with Intermediate and Low Pressure Storage Cylinders. The present numbering implies that they are separate. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-26 Log #CP15 Final Action: Accept (7.8.1.9) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Delete paragraph. Substantiation: This paragraph is not necessary as this item is covered by the reference to NFPA 20. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-27 Log #6 Final Action: Accept in Principle (7.8.4.4) _______________________________________________________________ Submitter: William J. Reilly, Victaulic Company Recommendation: Revise text to read as follows: 7.8.4.4 Check valves shall be installed in the main feed lines, near the control valves of both the water and pneumatic system piping of a twin-fluid system, to prevent the backflow of water or atomizing fluid into the companion piping unless the mixing of the water and atomizing fluid takes place at or below ambient pressure where backflow into companion piping is impossible. Substantiation: There are twin fluid systems where the mixing of the water and atomizing fluid takes place at or beyond the throat of the discharge nozzle where the pressure conditions of the individual fluids and the resultant mixture are such that backflow into the companion piping is impossible. Under these conditions, the check valves in the main feed lines currently required by this paragraph perform no useful function and, in the interest of system reliability and cost, should not be required. Committee Meeting Action: Accept in Principle Revise proposed text as follows: 7.8.4.4 Check valves shall be installed in the main feed lines, near the control valves of both the water and pneumatic system piping of a twin-fluid system, to prevent the backflow of water or atomizing fluid into the companion piping 7.8.4.4.1 Where the water and atomizing fluid are separated by an air gap, check valves shall be permitted to be omitted. Committee Statement: The committee agrees with the submitter. The revised language meets the NFPA Manual of Style and more accurately describes the separation of the pressurized media. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-28 Log #5 Final Action: Accept in Principle (7.8.5.1) _______________________________________________________________ Submitter: William J. Reilly, Victaulic Company Recommendation: Add new text to read as follows: 7.8.5.1 (6) When multiple gas cylinders are employed with their individual cylinder valves in the open position and connected to a pressurized manifold, a single pressure gauge on the pressurized section of the manifold shall be considered suitable for indicating the pressure in all the gas cylinders. Substantiation: Pressure gauges on individual gas cylinders for systems using a pressurized gas manifold serve no useful purpose since all the gauges would indicate the same pressure. In the interest of system reliability and cost, the entire section of the system incorporating the gas cylinders and pressurized manifold up to the gas control valve should be considered a single pressurized storage container when, under normal conditions, the gas cylinder valves are in the open position. Committee Meeting Action: Accept in Principle Revise text as follows: 7.8.5.1 (6) When multiple gas cylinders are employed with their individual cylinder valves sealed or supervised in the open position and connected to a pressurized

750-13

Report on Proposals F2009 — Copyright, NFPA NFPA 750 supplies is a significant concern where water mist systems are utilized in public spaces. Measures to prevent such growth include the use of ultra-violet light inserts in the reservoir that continuously circulate water. Stored water supplies should be tested for legionella bacteria at the semi-annual and annual maintenance intervals. Substantiation: An article in a 2006 issue of Plumbing Engineer raised a concern that has implications for water mist fire protection systems. Legionella bacteria that may exist even in potable water can be spread through the air by fine water mists which, if inhaled into the lungs, can cause serious or fatal pneumonia. Although NFPA 750 requires that the water supply be from a potable water source, the article establishes that even potable water systems may contain the bacteria. Furthermore, there are types of water mist systems where potable water may be stored in a break tank or reservoir where the conditions discussed in the article could develop. A review of this potential hazard is in order. Measures in NFPA 750 to prevent or control bacterial growth in stored water should be reviewed and if necessary strengthened. Note: Supporting material is available for review at NFPA Headquarters. Committee Meeting Action: Accept in Part Do not accept proposed 10.5.1.4. Accept the proposed Annex language. Committee Statement: Given the limited information regarding the effectiveness of mitigation efforts it is not appropriate to place this language as a requirement but is appropriate to have information presented in the Annex. Number Eligible to Vote: 27 Ballot Results: Affirmative: 21 Negative: 1 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. Explanation of Negative: OWEN, L.: 750-36, Log 8 recommends placing the following wording in the Appendix: A.10.5.1.4 The potential growth of legionella bacteria in stored water supplies is a significant concern where water mist systems are utilized in public spaces. Measures to prevent such growth include the use of ultraviolet light inserts in the reservoir that continuously circulate water. Stored water supplies should be tested for legionella bacteria at the semiannual and annual maintenance intervals. I vote negative on Proposal 750-36 for the following reasons. 1. There are no documented cases of legionella bacteria from water mist systems creating any type of health issues. 2. The stored water in water mist systems is changed out on an annual basis. If the water is changed out, there is no reason to test the water. 3. There is no defined level of legionella bacteria established by the recommendation as being safe or hazardous. 4. The recommended semiannual testing time basis does not tie to the current requirement for changing out the water in a mist system annually and will result in additional maintenance cost to water mist system owners. 5. No other water based fire protection systems have a requirement for legionella bacteria testing. 6. The annual testing for legionella bacteria will result in additional maintenance cost on water mist systems and there is no apparent benefit for the cost. Substantiation: See discussion above _______________________________________________________________ 750-37 Log #17 Final Action: Reject (10.5.4.6 and 10.5.4.7) _______________________________________________________________ Submitter: Matthew Daelhousen, FM Global Recommendation: Revise text to read as follows: 10.5.4.6 A reliable, supervised means shall be provided to indicate the pressure and level in all storage containers that will be pressurized. 10.5.4.7 A reliable, supervised means shall be provided to indicate the level in all storage containers that will not be pressurized. Substantiation: These changes will address confusion regarding these sections and the previous section for water tanks and bring the requirements for both sections to be equal. Committee Meeting Action: Reject Committee Statement: This proposal is similar to Proposal 750-24 (Log #16). See Committee Action on Proposal 750-24 (Log #16). Number Eligible to Vote: 27 Ballot Results: Affirmative: 21 Negative: 1 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. Explanation of Negative: KASISKI, R.: I am in agreement with the submitter of the Proposals as his intent is to increase the reliability of water mist systems which use high pressure cylinders by identifying a “Trouble” or abnormal condition. A “Trouble” or abnormal condition makes the system ineffective for fire extinguishment. A water mist fire protection reliability study has been conducted by FM Global Research. More common failure contributors identified in the study are empty water tanks and low gas propellant pressure, which are typically associated with high pressure storage cylinders. These failure contributors are associated with human error in the maintenance of water mist systems. These finding are published in the Importance Analysis section of the Water Mist Fire Protection Reliability Study, presented by Shuzhen Xu and David Fuller at the

Committee Statement: A task group has been formed to review these issues and provide comments to address them. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-33 Log #CP18 Final Action: Accept (8.1.1) _______________________________________________________________ Submitter: Technical Committee on Water Mist Fire Suppression Systems, Recommendation: Revise paragraph as follows: 8.1.1 Listing. Water mist protection systems shall be designed and installed in accordance with their listing for the specific hazards and protection objectives specified in the listing. Substantiation: Editorial revision removing redundant language. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-34 Log #3 Final Action: Accept (9.4.2.2) _______________________________________________________________ Submitter: William J. Reilly, Victaulic Company Recommendation: Revise text to read as follows: 9.4.2.2 Airflow at each nozzle shall be dependent on water pressure at the same nozzle. The gas and water ratios and operating pressures for all nozzles in the system shall be within the manufacturer’s listed limitations. Substantiation: In some technologies the gas flow is not directly dependent on the water pressure at a nozzle. The real intent of this paragraph is that the gas and water ratios must be within the operating limits established in the listings/approvals of the systems. Those listings/approvals take into consideration both the fire performance and the methods to adequately predict the flow for both the water and gas components. The proposed revision more completely describes the outcome sought by this paragraph. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-35 Log #7 Final Action: Reject (10.3.1) _______________________________________________________________ Submitter: William J. Reilly, Victaulic Company Recommendation: Add new text to read as follows: 10.3.1 (4) For systems employing nitrogen or argon as the atomizing medium, the following requirements apply: (a) The discharge time shall be no less than 20% longer than that determined necessary for extinguishment in approval fire testing. (b) The quantity of water and the quantity of inert gas shall be no less than 20% more than the quantities of each determined necessary for extinguishment in approval fire testing. (c) The discharge time and agent quantity of inert gas shall not exceed that which will result in a residual oxygen level of 12% or less. Substantiation: Fire testing has demonstrated the synergistic effect of employing water mist together with an inert gas in a twin fluid system. The performance is so convincing that agent quantities, flow rates and discharge times similar to those required for inert gas agents in NFPA 2001 seem more appropriate for these twin fluid systems than those traditionally used for water (alone) systems. While paragraph 10.3.1(3)(b) allows discharge times other than that required by paragraph 10.3.1(1), it does so without providing the users of the standard any useful guidance. The proposed additional text does provide measurable guidance that can be employed and enforced. Committee Meeting Action: Reject Committee Statement: This proposal represents a considerable departure from the present system design. It is premature for the committee to approve this proposed language without reviewing the fire test record that supports it. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-36 Log #8 Final Action: Accept in Part (10.5.1) _______________________________________________________________ Submitter: Jack R. Mawhinney, Hughes Associates, Inc. Recommendation: Add new material to Section 10.5.1. 10.5.1.4 Measures to prevent the growth of bacteria harmful to public health in reservoirs of stored water shall be employed wherever there is a possibility of persons being exposed to water mist. A.10.5.1.4 The potential growth of legionella bacteria in stored water

750-14

Report on Proposals F2009 — Copyright, NFPA NFPA 750 Aboveground Piping in NFPA 13, Chapter 24. Committee Meeting Action: Accept in Principle Revise proposed language as follows: (3) Confirm in writing the status of all system components and controls. (4) When the system has not been left in service, confirm in writing those responsible for placing the system in service. Committee Statement: It is not always possible to leave the system in service after testing. Therefore resetting the system is not an option. In such circumstances it will be necessary to identify the party responsible for placing the system in service. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-40 Log #12 Final Action: Accept (12.2.4.2.6) _______________________________________________________________ Submitter: Bob Eugene, Underwriters Laboratories Inc. Recommendation: Revise text as follows: 12.2.4.2.6 The detectors shall be installed in a professional manner and in accordance with technical data regarding their installation and the following, as applicable: (1) NFPA 72, National Fire Alarm Code, shall be referenced for installation requirements. (2) In Canada, CAN/ULC S524-01 06, Standard for the Installation of Fire Alarm Systems, and CAN/ULC S529-02, Standard for Smoke Detectors for Fire Alarm Systems, shall be referenced. Substantiation: Updated referenced standards to include the most recent revisions. Committee Meeting Action: Accept Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-41 Log #18 Final Action: Reject (Table 13.2.2) _______________________________________________________________ Submitter: Matthew Daelhousen, FM Global Recommendation: Delete text as follows: See Table 13.2.2 Below

2008 Fire Protection Research Foundation, Suppression and Detection Research and Applications. Supporting material available at NFPA. The usage of a supervision alarm would increase the reliability of the system. This would be a prudent requirement given the high value of the assets and intervening of business interruption the water mist system is providing fire protection too. The cost to implement is relatively inexpensive, provided the manufacturer of the equipment incorporates it into their design. There is currently one pressure gauge manufacturer which has a pressure gauge and a pressure switch incorporated into one device. The proposed requirement does not require the specific cylinder to be identified, but supervision to identify of the “Trouble” or abnormal condition. It is agreed though the Proposal is redundant with the identification of a pressure gauge and is covered in the requirements of paragraph 7.8.5.1. It is also acknowledged for high pressure cylinders the usage of a load cell may be more appropriate than a liquid level indicator. _______________________________________________________________ 750-38 Log #14 Final Action: Accept in Principle (11.1.5) _______________________________________________________________ Submitter: Glenn Mahnken, FM Global Recommendation: Add: (27) A complete step-by-step description of the proposed acceptance test procedure, identifying all devices controls and functions to be tested and how the test will be conducted. Substantiation: Including the detailed acceptance test procedure in the submitted plans and documents for review by the AHJ will ensure that all critical devices, components and functions are identified and subsequently verified by the acceptance test. Committee Meeting Action: Accept in Principle Move language to a new 12.1.1 A complete step-by-step description of the proposed acceptance test procedure, identifying all devices controls and functions to be tested and how the test will be conducted shall be approved prior to scheduling of acceptance testing. Renumber the rest of the section accordingly. Committee Statement: This requirement is crucial prior to acceptance testing but is not appropriate at plan submittal. Number Eligible to Vote: 27 Ballot Results: Affirmative: 22 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. _______________________________________________________________ 750-39 Log #13 Final Action: Accept in Principle (12.1.3) _______________________________________________________________ Submitter: Glenn Mahnken, FM Global Recommendation: Add new text to read: 12.1.3 To determine that the system has been properly installed and functions as specified, the installing contractor shall take the following actions: (1) Notify the authority having jurisdiction and the owner’s representative of the time and date testing is to be performed (2) Perform all required acceptance tests (3) Confirm in writing that all system components and controls have been re-set and left in service following completion of the acceptance test. Substantiation: Written confirmation is needed that authorized and trained personnel representing the manufacturer have re-set and put the system in service following the acceptance test. A similar requirement is made for sprinkler systems – see Contractor’s Material and Test Certificate for

Table 13.2.2

Item Task Weekly Monthly QuarterlySemi-

Annually Annually OtherWater storage tanks Check water level (unsupervised) X

Check water level (supervised) XWater storage cylinder (high pressure)

Check water level (load cells) XCheck water level (unsupervised) X

Compressed gas cyl-inders

Check cylinder pressure (unsuper-vised)

X

Check cylinder pressure (super-vised)

X

Plant air, compressors, and receivers

Check air pressure (unsupervised) XCheck air pressure (supervised) X

750-15

Report on Proposals F2009 — Copyright, NFPA NFPA 750 Substantiation: Changes to eliminate confusion and allow consistency of supervision requirements throughout the rest of the standard. Committee Meeting Action: Reject Committee Statement: Committee Actions on Proposal 750-24 (Log #16) and Proposal 750-37 (Log #17) make this revision unnecessary. Number Eligible to Vote: 27 Ballot Results: Affirmative: 20 Negative: 2 Ballot Not Returned: 5 Anderson, R., Gameiro, V., Haberichter, E., Hunstad, M., Pope, J. Explanation of Negative: KASISKI, R.: I am in agreement with the submitter of the Proposals as his intent is to increase the reliability of water mist systems which use high pressure cylinders by identifying a “Trouble” or abnormal condition. A “Trouble” or abnormal condition makes the system ineffective for fire extinguishment. A water mist fire protection reliability study has been conducted by FM Global Research. More common failure contributors identified in the study are empty water tanks and low gas propellant pressure, which are typically associated with high pressure storage cylinders. These failure contributors are associated with human error in the maintenance of water mist systems. These finding are published in the Importance Analysis section of the Water Mist Fire Protection Reliability Study, presented by Shuzhen Xu and David Fuller at the 2008 Fire Protection Research Foundation, Suppression and Detection Research and Applications. Supporting material available at NFPA. The usage of a supervision alarm would increase the reliability of the system. This would be a prudent requirement given the high value of the assets and intervening of business interruption the water mist system is providing fire protection too. The cost to implement is relatively inexpensive, provided the manufacturer of the equipment incorporates it into their design. There is currently one pressure gauge manufacturer which has a pressure gauge and a pressure switch incorporated into one device. The proposed requirement does not require the specific cylinder to be identified, but supervision to identify of the “Trouble” or abnormal condition. It is agreed though the Proposal is redundant with the identification of a pressure gauge and is covered in the requirements of paragraph 7.8.5.1. It is also acknowledged for high pressure cylinders the usage of a load cell

may be more appropriate than a liquid level indicator. MAWHINNEY, J.: Proposal 750-41 recommended deleting Table 13.2.2 “Maintenance of Water Mist Systems”. The substantiation given was “to eliminate confusion and allow consistency of supervision requirements throughout the rest of the standard.” The committee rejected the proposal on the basis that committee action on Proposal 750-24 and 750-37 (having to do with supervising pressure and water level indicators) made this revision unnecessary. Since both referenced proposals were rejected, the reason given for rejecting 750-41 is not correct. I vote negative on Proposal 750-4 for the following reason. The committee action should be “Accept in Principle”, not “Reject”. NFPA 25, 2008 now includes a chapter on inspection, testing and maintenance of water mist systems. Table 13.2.2 from NFPA 750 has been reproduced in Chapter 12 of NFPA 25. The original (1996) reason that NFPA 750 contained its own requirements for maintenance inspection of water mist systems, rather than referencing NFPA 25, was because NFPA 25 prior to the 2008 edition did not contain any relevant requirements for water mist systems. NFPA 750 committee members should review Chapter 12 of NFPA 25- 2008. Article 13.2.2 in NFPA 750 should reference NFPA 25, in accordance with NFPA policy regarding the role of NFPA 25 for water based fire protection systems. As an aid to users of the standard, however, it is proposed to relocate Table 13.2.2 to the Annex of NFPA 750. Recommendation: Change committee action on Proposal 750-41, Log #18 to Accept in Principle. Delete Existing Articles 13.2.2 and 13.2.3 and move Table 13.2.2 to the Annex. 13.2.2 Requirements. The components of typical water mist systems to be inspected and tested are provided in Table 13.2.2. 13.2.3 Frequencies. The frequency of inspections and tests shall be in accordance with Table 13.2.2 or as specified in the manufacturer’s listing, whichever is more frequent. Replace the deleted Articles with New 13.2.2 and an annex note: 13.2.2 *Frequencies. The frequency of inspection of components of water mist systems shall be in conformance with the manufacturer’s listing requirements, and NFPA 25, Inspection, Testing and Maintenance of Water Based Fire Protection Systems, 2008 edition. A-13.2.2. Table A-13.2.2 indicates the recommended frequencies of inspection of typical components of water mist systems. See NFPA 25 for comprehensive requirements for inspection, testing and maintenance of water mist systems.

Table A.13.2.2

Item Task Weekly Monthly QuarterlySemi-

Annually Annually Other

Water storage tanks Check water level (unsupervised) X

Check water level (supervised) X

Water storage cylinder (high pressure)

Check water level (load cells) X

Check water level (unsupervised) X

Compressed gas cyl-inders

Check cylinder pressure (unsuper-vised)

X

Check cylinder pressure (super-vised)

X

Plant air, compressors, and receivers

Check air pressure (unsupervised) X

Check air pressure (supervised) X