Post on 13-Jan-2016
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.
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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
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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
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Handling and inspection Handling and inspection proceduresprocedures
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
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Handling and inspection Handling and inspection proceduresprocedures
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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Handling and inspection Handling and inspection proceduresprocedures
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
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Handling and inspection Handling and inspection proceduresprocedures
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
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Handling and inspection Handling and inspection proceduresprocedures
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
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Handling and inspection Handling and inspection proceduresprocedures
Valves should not be hammered Valves should not be hammered open or closedopen or closed
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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
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Storage proceduresStorage procedures
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
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Storage proceduresStorage procedures
Keep compressed gases away from Keep compressed gases away from fires, flames, and welding torchesfires, flames, and welding torches
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Storage proceduresStorage procedures
When containers are in storage, When containers are in storage, remove:remove:• RegulatorsRegulators• Cylinder connectionsCylinder connections• HoselinesHoselines• Similar auxiliary devicesSimilar auxiliary devices
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Storage proceduresStorage procedures
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
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Storage proceduresStorage procedures
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
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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
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Personal protective Personal protective equipmentequipment
Eye and face protectionEye and face protection
GlovesGloves
ApronsAprons
Foot protectionFoot protection
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