nfpa 110/111: major potential changes/media/783b87cba2d0482fb0173184c09fdc56.pdfnfpa 110/111 major...

2014 NFPA Annual Conference: W23

NFPA 110/111 Major Potential Changes

See NFPA Disclaimer. David Stymiest, PE

CHFM CHSP FASHE. cell 504.232.1113.

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NFPA 110/111: Major Potential Changes

W23

Presented by:

David Stymiest, P.E. CHFM CHSP FASHE

Senior Consultant

Smith Seckman Reid, Inc.

[email protected], cell 504.232.1113

2014 NFPA Conference & Expo

• Although the speaker is Chairman of the NFPA Technical Committee on Emergency Power Supplies, which is responsible for NFPA 110 and 111, the views and opinions expressed in this presentation are purely those of the speaker and shall not be considered the official position of NFPA or any of its Technical Committees and shall not be considered to be, nor be relied upon as, a Formal Interpretation. Readers are encouraged to refer to the entire texts of all referenced documents.

• NFPA members can obtain staff interpretations of NFPA standards at www.nfpa.org.





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• 2015 annual revision cycle; 2016 editions

• 5-16-14: Public comment closing date

• 10-10-14: Second draft goes to NEC CC

• 1-16-15: Second draft for NITMAM review

• Battery I-T-M modernized

• Records management section added

• Acceptance testing of paralleling gear controls

• O&M for paralleling gear controls

• ATS testing changes

• Automatically actuated valves not permitted in fuel oil supply & return lines





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• Existing language states “shall be permanently installed” however new Annex language clarifies intent: to permit portable or alternate equipment when permanent EPSS equipment is out of service.





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• Addresses PI concern about sufficient controls to guarantee required quantity of fuel is always available with multi-use tanks

• Corrects PI concern with previous double “or” wording. Ensures both starting and control batteries are maintained with a proper charge.





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• Addresses PI concern about requiring older rheostat technology with potentially higher failure rates. Permits modern voltage adjustment technologies.

• Clarifies intent that intended use of closed-transition ATS or soft-loading capabilities should be permitted with utility and AHJ approval.





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• Adds Annex discussion on cleaning & purging of flammable gas systems per request of the NFPA 56 TC

• Addresses concerns about unwanted fuel oil valve actuation disabling the generator during a fire and taking down fire protection or other life safety systems.





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• Addresses the need to verify functionality of EPSS paralleling gear control systems during installation acceptance testing.

• No content changed - just © dates

• A.8.3.1(a) - Suggested maintenance schedule when manufacturer’s recommendations are not available

• A.8.3.1(b) - Suggested maintenance log when manufacturer’s recommendations are not available

• Remember this requirement:

8.1.1 The routine maintenance and operational testing program shall be based on all of the following:

1) Manufacturer's recommendations

2) Instruction manuals

3) Minimum requirements of this chapter

4) The authority having jurisdiction





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• Common sense; recommended by paralleling gear manufacturers but not previously stipulated in 110

• Systematically verifying during ongoing monthly testing that the engine start wiring is still functional – not previously addressed in 110





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TC statement: “The annex material has been added to clarify that it is not required to keep every ATS in the emergency position for 30 minutes. In certain circumstances, an ATS may be electrically operated at a different time than the monthly test.”

TC Statement: “The new section was created to consolidate record management and define record retention requirements. The use of the word permanent was removed to reflect actual operating conditions and to require that the facility management or AHJ define the length of record retention. Operation and test were merged to align with the requirements of the section.”





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• Committee statement:The new figure for a typical 911 call in center illustrates objectives of NFPA 110 and of Article 708 in the NEC.

• Reflects substantial input from IEEE’s Stationary Battery Committee / Codes Working Group members

• Substantial additional coordination with NEC and NFPA 110

• Industry experiences and enhancements






Global FR-1

Replaces

Stored Emergency Power Supply System

with

Stored-energy Emergency Power Supply System

• Clarifies NFPA 110 vs. NFPA 111

• Clarifies relationship with NEC Articles 700 and 701






1.1.4.1* This standard shall not cover the following: (1) Application of the SEPSS(2) Distribution wiring(3) Systems having total outputs less than 500 VA or less than 24 V, or systems less than Class 0.033(4) Unit equipment (5) Nuclear sources, solar systems, and wind stored-energy systems (6) Uninterruptible power systems (UPS) supplied by an emergency power supply system (EPSS) or a UPS supplied by a SEPSS(7) Optional standby systems

• PI: deleted phrase was not entirely accurate and not necessary for clarity.






• New definition above is per IEEE glossary

Clarifies Table 4.2.2 Types

(with VFI VFD VI)

New annex describes the 3 internationally

recognized UPS operating modes.






• Adds Annex A.4.3 clarification on end of battery life from IEEE Stationary Battery Committee working group members.

• Avoids excluding UPS when its power source is a generator or other allowable alternative source






• Clarifies Level 1 SEPSS & NEC Article 700

• Clarifies Level 2 SEPSS connection with NEC Article 701






• This “looking forward” Annex language aids understanding of the rapidly-changing SEPSS industry; discusses available new technologies whose use has yet to be proven suitable for SEPSS applications.

• Close-couple hybrid rotary systems are bridging systems, being deleted because they are not true stored-energy systems.






• TC Statement: This public input was moved to the annex for 5.2.1. It ties NFPA 111 to NEC Article 700, which describes a bridging system as an “auxiliary power supply” in 700.12(B)(5): “Generator sets that require more than 10 seconds to develop power shall be permitted if an auxiliary power supply energizes the emergency system until the generator can pick up the load.”

• Agree w/ industry std. for lead acid batteries.






• No UPS mfr. meters internal battery temp.

• Removes undefined and inaccurate term load source in multiple locations.






• Clarifies load switching requirements

• PI: “For load switching, the goal is to prevent loading of one source to more than 80% of “N” capacity.”

• Note: ECE = Energy Conversion Equipment






• This change provides the component importance factor required by ASCE 7.






• PI: Changes “practical” to “practicable” to suggest that locating batteries close to the SEPSS may be a common practice, but it may not always be feasible due to specific site conditions.

From grammarist.com: “Think of practical as a synonym of useful, and practicable as a synonym of doable and feasible.”

• Next 4 slides: The on-site installation acceptance test / system load test is updated to reflect modern UPS industry knowledge and practices as recommended by the IEEE Stationary Battery Committee working group members.






• TC STATEMENT: Minute-by-minute recording is not necessary for the required data. The risk of damage to battery terminals from too much torquing is greater than the risk of connections loosening after a single discharge.

Replacement of any component of an SEPSS that has failed, not just battery components, has been added. If elements of the system have failed and been replaced, the SEPSS is to be re-tested to ensure proper performance before being put into service. If battery cells or units have been replaced, the replacement cells should be charged and balanced in accordance with the manufacturer’s recommendations.

TC STATEMENT: The time when ohmic baseline measurements are taken is extended from two weeks to approximately six months. Case studies show that battery units are too unstable to get meaningful ohmic data when they are first installed. After a battery has been installed for some period of time (typically 6 months or longer), reliable baseline data can be taken. The actual stabilization time can vary depending upon a number of variables, including the number of discharge/recharge cycles that occur.






• TC Statement: … Although ohmic testing may detect a possibly failing cell or cells, it is possible that it could miss something. The only way to truly know the capacity of a battery is to test it.

• TC STATEMENT: Most of the SEPSS systems are online during the test. When a loadbank is installed in addition to the SEPSS load it is sometimes difficult to hold 100%. A load of 60% for 60% duration of it's class will prove that the SEPSS will function as designed and carry the load to duration of it's class.






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2014 NFPA Conference & Expo

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