Return to Master TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
iii |
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| SAFETY |
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| WELDING | and | CUTTING | CYLINDER may explode | ||||||
| SPARKS can cause fire or | if damaged. |
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| explosion. |
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| 7.a. Use only | compressed | gas | cylinders | |||
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| 6.a. Remove fire hazards from the welding area.If | containing the correct shielding gas for the | ||||||||
| process used and | properly | operating | |||||||
| this is not possible, cover them to prevent the welding sparks | |||||||||
| regulators | designed | for | the | gas and | |||||
| from starting a fire. Remember that welding sparks and hot | |||||||||
| pressure used. All hoses, fittings, etc. should be suitable for | |||||||||
| materials from welding can easily go through small cracks | |||||||||
| the application and maintained in good condition. |
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| and openings to adjacent areas. Avoid welding near hydraulic |
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| lines. Have a fire extinguisher readily available. | 7.b. Always keep cylinders in an upright position securely | ||||||||
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6.b. Where compressed gases are to be used at the job site, | chained to an undercarriage or fixed support. |
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| special precautions should be used to prevent hazardous | 7.c. Cylinders should be located: |
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| situations. Refer to “Safety in Welding and Cutting” (ANSI |
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| • Away from areas where they may be struck or subjected to | |||||||||
| Standard Z49.1) | and the | operating | information for the | ||||||
| physical damage. |
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| equipment being used. |
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6.c. When not welding, make certain no part of the electrode | • A safe distance from arc welding or cutting operations and | |||||||||
any other source of heat, sparks, or flame. |
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| circuit is touching the work or ground. Accidental contact can |
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| cause overheating and create a fire hazard. | 7.d. Never allow the electrode, electrode holder or any other | ||||||||
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6.d. Do not heat, cut or weld tanks, drums or containers until the | electrically “hot” parts to touch a cylinder. |
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| proper steps have been taken to insure that such procedures | 7.e. Keep your head and face away from the cylinder valve outlet | ||||||||
| will not cause flammable or toxic vapors from substances | |||||||||
| when opening the cylinder valve. |
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| inside. They can cause an explosion even though they have |
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| been “cleaned”. For information, purchase “Recommended | 7.f. Valve protection caps should always be in place and hand | ||||||||
| Safe Practices for the Preparation for Welding and Cutting of | |||||||||
| tight except when the cylinder is in use or connected for | |||||||||
| Containers and | Piping | That | Have | Held Hazardous | |||||
| use. |
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| Substances”, AWS F4.1 from the American Welding Society |
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| (see address above). |
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| 7.g. Read and follow the instructions on compressed gas | |||||
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| cylinders, associated equipment, and CGA publication | ||||
6.e. Vent hollow castings or containers before heating, cutting or | “Precautions for Safe Handling of Compressed Gases in | |||||||||
| welding. They may explode. |
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| Cylinders,” available from the Compressed Gas Association | |||||
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| 1235 Jefferson Davis Highway, Arlington, VA 22202. | ||||
6.f. | Sparks and spatter are thrown from the welding arc. Wear oil |
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| free protective garments such as leather gloves, heavy shirt, | FOR ELECTRICALLY | ||||||||
| cuffless trousers, high shoes and a cap over your hair. Wear | |||||||||
| ear plugs when welding out of position or in confined places. | |||||||||
| powered equipment. | |||||||||
| Always wear safety glasses with side shields when in a | |||||||||
| welding area. |
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| 8.a. Turn off input power using the disconnect | ||||
6.g. Connect the work cable to the work as close to the welding | switch at the fuse box before working on | |||||||||
| area as practical. Work cables connected to the building | the equipment. |
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| framework or other locations away from the welding area |
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| increase the possibility of the welding current passing through | 8.b. Install equipment in accordance with the U.S. National | ||||||||
| lifting chains, crane cables or other alternate circuits. This can | Electrical Code, all local codes and the manufacturer’s | ||||||||
| create fire hazards or overheat lifting chains or cables until | recommendations. |
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| they fail. |
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| 8.c. Ground the equipment in accordance with the U.S. National | ||||
6.h. Also see item 1.c. |
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| Electrical Code and the manufacturer’s recommendations. | |||||
6.I. Read and follow NFPA 51B “ Standard for Fire Prevention During Welding, Cutting and Other Hot Work”, available from NFPA, 1 Batterymarch Park,PO box 9101, Quincy, Ma
6.j. Do not use a welding power source for pipe thawing.
Refer to http://www.lincolnelectric.com/safety for additional safety information.
