hazardousmaterials-new (3).ppt

7/29/2019 HazardousMaterials-new (3).ppt

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Hazardous Materials

1910.106


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Basis of Standard

NFPA 30 Flammable &

Combustible Liquids Code

Applies to flammable & combustile

liquids with a flashpoint below 200F

Handling

Storage

Use Two primary hazards

Explosion & fire


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Terminology

Combustible liquid

Liquid having a flash point at or above

100F

Divided into two classes

Flammable liquid

Any liquid having a flash point below

100F or higher


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Classifications & flashpoints


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Container & Portable

Tank Storage

Storage of flammable or combustible

liquids

Drums or other containers

Not exceeding 60-gallons

Portable tanks of less than 660-gallons

Portable tank

Closed container that has a liquid

capacity of more than 60-gallons and is

not intended for fixed installations


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Design, Construction &

Capacity of Containers

Requirements

Approved containers for F/C liquids

DOT 49 CFR 178

Metal containers

Portable tanks

NFPA 30 for certain petroleum products

Plastic containers

ANSI/ASTM D 3435-80

ASTM F852-86

ASTM F 976-86

ANSI/UL 1313-83


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Capacity of Containers

Requirements, cont.

Approved containers for F/C liquids Emergency venting

At least one pressure-activated vent

Maximum allowable sizes are specified based

on classes of F/C


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Capacity of Storage Cabinets

Requirements

Fire safety storage

cabinets

Class I and/or Class II

liquids

Not more than 60 gallons

Class III liquids

Not more than 120 gallons

Applies to metal & wooden

cabinets


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Requirements, cont.

Fire safety storage

cabinets

Limit internal temps to not

more than 325F

Subject to 10-minute fire

test

Labeled Flammable-Keep

Fire Away

Construction of cabinet

NFPA 2511969


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Maximum Allowable Size of

Containers & Portable Tanks

Container exemptions: medicines, beverages, foodstuffs,

cosmetics, and other common consumer items, when packaged

according to commonly accepted practices


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Maximum Allowable Size of

Containers & Portable Tanks

Requirements, cont.

Rating & Capacity

* gals., sq. ft., or floor area

Table H-13 Storage in Inside Rooms

Fire

Protection

provided

Fire

Resistance

Max Size Total

Allowable

Quantities*

Yes 2 hours 500 sq. ft. 10

No 2 hours 500 sq. ft. 5Yes 1 hour 150 sq. ft. 4

No 1 hour 150 sq. ft. 2


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Requirements, cont. Inside Rooms

Wiring

Ventilation

Storage

Dispensing pump or self-closing faucet


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Requirements, cont. Inside Bldg.

Egress

Office occupancies

General purpose public warehouses

Warehouses or storage buildings


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Requirements, cont. Outside

Bldg.

Fire Control

Small hose or

Portable fire extinguishers

No open flames or smoking

permitted


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Requirements, cont. Outside Bldg.

Incidental storage or use of F/C liquids

Container quantity shall not exceed

25 gal of Class IA

120 gal of Class IB, II, or III liquids

660 gal of Class IB, IC, II, or III liquids

Single portable tank


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Handling Liquids - POU

Requirements

Kept in covered containers

Have means of proper disposal


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Requirements, cont.

Transfer

Through closed piping system

From safety cans

By means of device drawing through top; or

From containers or portable tanks by gravity

through an approved self-closing valve

Must have proper ventilation

Sources of ignition not permitted


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Requirements, cont.

Fire Control

Sources of Ignition

Open flames

Lightning

Smoking

Cutting & welding

Hot surfaces Frictional heat

Static

Electrical

Mechanical

Spontaneous ignition

Heat-producing chemical

reactions Radiant heat


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Other

Storage

Bulk Plants

Service Stations

Processing plants

Refineries, Chemical Plants &

Distilleries

Spray Finishing


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Hazardous Locations

NEC definition

Areas where fire or explosion hazards

may exist due to flammable gases or

vapors, flammable liquids, combustibledust, or ignitable fibers or flyings


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Hazardous Locations

Class I locations Created by presence of flammable

gases or vapors in the air

i.e. natural gas or gasoline vapor Examples

Petroleum refineries and gasoline storage and

dispensing areas

Dry cleaning plants where vapors from cleaningfluids can be present

Spray finishing areas

Aircraft hangars

Fuel servicing areas

Utility gas plants and operations


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Hazardous Locations

Class II locationsAreas with presence of combustible dust

i.e., finely pulverized material, suspended in

air

Examples Grain elevators

Flour & feed mills

Magnesium or Aluminum power plants

Plastics, medicines and fireworks producers

Producers of starch or candies

Spice-grinding plants, sugar plans and cocoa plants

Coal preparation plants and other carbon-handling

or processing areas


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Hazardous Locations

Class III locations

Areas where easily ignitable fibers or

flyings are present, not likely to be

suspended in air, but found aroundfacility

Examples

Textile mills Cotton gins

Cotton seed mills

Flax processing plants

Wood products


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Hazardous Location

Conditions

NEC

Normal conditions Division 1

Hazard present in everyday operations or

during repair and maintenance activity

Abnormal conditions Division 2

Expected to be confined within closed

containers or systems, but through

accident, breakage or faulty operation


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Hazardous Locations


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Hazardous Locations

Precaution against ignition of the

atmosphere

Electrical equipmentArcs and sparks

High temperatures

Electrical equipment failure

Design and construction eliminate potential

for ignition of the atmosphere


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Labeling


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DOT/Haz Material

Shipping Labels


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Resources

OSHA

http://www.osha.gov/SLTC/hazardoustoxicsubstances/index.

html

List of Highly Hazardous Chemicals, Toxics and Reactives

Appendix A http://www.osha.gov/pls/oshaweb/owadisp.show_document?

p_id=9761&p_table=STANDARDS

http://phmsa.dot.gov/hazmat
http://www.osha.gov/SLTC/hazardoustoxicsubstances/index.htmlhttp://www.osha.gov/SLTC/hazardoustoxicsubstances/index.htmlhttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://phmsa.dot.gov/hazmathttp://phmsa.dot.gov/hazmathttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9761&p_table=STANDARDShttp://www.osha.gov/SLTC/hazardoustoxicsubstances/index.htmlhttp://www.osha.gov/SLTC/hazardoustoxicsubstances/index.html


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Questions?

Definitions assignment

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