compressed gases compressed gas description v definition of a compressed gas - any gas, or mixture...

Compressed Compressed GasesGases

Compressed gas Compressed gas description description

Definition of a compressed gas - Definition of a compressed gas - any gas, or mixture of gases, that any gas, or mixture of gases, that is pressurized and contained in a is pressurized and contained in a cylinder or tank.cylinder or tank.

1a

Compressed gas Compressed gas descriptiondescription

Examples of compressed gasesExamples of compressed gases• AcetyleneAcetylene• Anhydrous ammoniaAnhydrous ammonia• Carbon dioxideCarbon dioxide• HeliumHelium

Types of containers in which Types of containers in which compressed gas is storedcompressed gas is stored

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Cryogenic liquidsCryogenic liquids

Definition of a cryogenic liquid - Definition of a cryogenic liquid - matter that exists at minus 200 matter that exists at minus 200 degrees Celsiusdegrees Celsius

Examples of cryogenic liquidsExamples of cryogenic liquids• Liquid nitrogenLiquid nitrogen• Argon Argon • Liquid oxygenLiquid oxygen

2a

Handling and inspection Handling and inspection proceduresprocedures

Ensure gas containers are Ensure gas containers are identified with a DOT or TC labelidentified with a DOT or TC label

Cylinders must Cylinders must never be dropped, never be dropped, slid, or rolledslid, or rolled

3a


Use carts or other material Use carts or other material handling equipment to move handling equipment to move cylinderscylinders

Regulators, pressure relief devices, Regulators, pressure relief devices, valves, and hoses must be valves, and hoses must be designed for the specific containerdesigned for the specific container

3b


Never interchange equipment Never interchange equipment between different types of gasesbetween different types of gases

Pressure relief devices maintain Pressure relief devices maintain pressure in cylinder at a desired pressure in cylinder at a desired levellevel

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Inspect cylinders and devices, and Inspect cylinders and devices, and remove defective equipment from remove defective equipment from serviceservice

Inspect threads on valves and Inspect threads on valves and regulators for damage, dirt, regulators for damage, dirt, grease, and oilgrease, and oil

3d


Threads on regulators and Threads on regulators and auxiliary equipment must match auxiliary equipment must match the container valve threads - the container valve threads - adapters are not allowedadapters are not allowed

Connections must not be tampered Connections must not be tampered with, or forced togetherwith, or forced together

3e


Valves should be opened slowly, Valves should be opened slowly, with valve outlets pointed away with valve outlets pointed away from the user and other personsfrom the user and other persons

Valves should be opened with the Valves should be opened with the wrench supplied by the vendorwrench supplied by the vendor

3f


Valves should not be hammered Valves should not be hammered open or closedopen or closed

3g

Containers must be stored uprightContainers must be stored upright

Storage areas must be well-Storage areas must be well-ventilatedventilated

Avoid storage temperatures above Avoid storage temperatures above 125 degrees Fahrenheit125 degrees Fahrenheit

Storage proceduresStorage procedures

4a


Post the names of the gases in the Post the names of the gases in the storage areastorage area

Keep valve caps on containers Keep valve caps on containers when not connected to dispensing when not connected to dispensing equipmentequipment

4b


Keep compressed gases away from Keep compressed gases away from fires, flames, and welding torchesfires, flames, and welding torches

4c


When containers are in storage, When containers are in storage, remove:remove:• RegulatorsRegulators• Cylinder connectionsCylinder connections• HoselinesHoselines• Similar auxiliary devicesSimilar auxiliary devices

4d


Store oxygen away from Store oxygen away from flammable gas containers and flammable gas containers and combustiblescombustibles• 20-foot rule20-foot rule• Non-combustible 5-foot high barrierNon-combustible 5-foot high barrier

4e


Ensure that the storage area is:Ensure that the storage area is:• properly labeledproperly labeled• securesecure• away from ignition sourcesaway from ignition sources• separate from oxidizing gasesseparate from oxidizing gases

Types of containers in which Types of containers in which cryogenics are storedcryogenics are stored

4f

Compressed gas hazardsCompressed gas hazards

Inert gasesInert gases

Oxidizing gases Oxidizing gases

Fire hazards of Fire hazards of flammable flammable compressed gasescompressed gases

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Compressed gas hazardsCompressed gas hazards

Health hazards of poison gasesHealth hazards of poison gases

Corrosive gasesCorrosive gases

Other hazardsOther hazards

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Cryogenic liquid hazardsCryogenic liquid hazards

Extreme cold temperaturesExtreme cold temperatures

AsphyxiationAsphyxiation

Splashing and boiling during Splashing and boiling during transfertransfer

6a

Personal protective Personal protective equipmentequipment

Eye and face protectionEye and face protection

GlovesGloves

ApronsAprons

Foot protectionFoot protection

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compressed gases compressed gas description v definition of a compressed gas - any gas, or mixture...

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