iii | WELDING SPARKS canSAFETY | CYLINDER may explode iii | |
| cause fire or explosion. |
| if damaged. |
| 6.a. Remove fire hazards from the welding area. |
| |
| If this is not possible, cover them to prevent |
| 7.a. Use only compressed gas cylinders |
| the welding sparks from starting a fire. |
| containing the correct shielding gas for the |
| Remember that welding sparks and hot |
| process used and properly operating |
| materials from welding can easily go through small cracks |
| regulators designed for the gas and |
| and openings to adjacent areas. Avoid welding near |
| pressure used. All hoses, fittings, etc. should be suitable for |
| hydraulic lines. Have a fire extinguisher readily available. |
| the application and maintained in good condition. |
6.b. Where compressed gases are to be used at the job site, | 7.b. Always keep cylinders in an upright position securely | ||
| special precautions should be used to prevent hazardous |
| chained to an undercarriage or fixed support. |
| situations. Refer to “Safety in Welding and Cutting” (ANSI | 7.c. Cylinders should be located: | |
| Standard Z49.1) and the operating information for the |
| • Away from areas where they may be struck or subjected to |
| equipment being used. |
| physical damage. |
6.c. When not welding, make certain no part of the electrode |
| • A safe distance from arc welding or cutting operations and | |
| circuit is touching the work or ground. Accidental contact |
| |
| can cause overheating and create a fire hazard. |
| any other source of heat, sparks, or flame. |
6.d. Do not heat, cut or weld tanks, drums or containers until the | 7.d. Never allow the electrode, electrode holder or any other | ||
| proper steps have been taken to insure that such procedures |
| electrically “hot” parts to touch a cylinder. |
| will not cause flammable or toxic vapors from substances | 7.e. Keep your head and face away from the cylinder valve outlet | |
| inside. They can cause an explosion even though they have | ||
| been “cleaned”. For information, purchase “Recommended |
| when opening the cylinder valve. |
| Safe Practices for the Preparation for Welding and Cutting of | 7.f. | Valve protection caps should always be in place and hand |
| Containers and Piping That Have Held Hazardous | ||
| Substances”, AWS F4.1 from the American Welding Society |
| tight except when the cylinder is in use or connected for |
| (see address above). |
| use. |
6.e. Vent hollow castings or containers before heating, cutting or | 7.g. Read and follow the instructions on compressed gas | ||
| cylinders, associated equipment, and CGA publication | ||
6.f. | welding. They may explode. |
| “Precautions for Safe Handling of Compressed Gases in |
Sparks and spatter are thrown from the welding arc. Wear oil |
| Cylinders,” available from the Compressed Gas Association | |
| free protective garments such as leather gloves, heavy shirt, |
| 1235 Jefferson Davis Highway, Arlington, VA 22202. |
| cuffless trousers, high shoes and a cap over your hair. Wear |
| FOR ELECTRICALLY |
| ear plugs when welding out of position or in confined places. |
| |
| Always wear safety glasses with side shields when in a |
| |
| welding area. |
| powered equipment. |
6.g. Connect the work cable to the work as close to the welding |
| 8.a. Turn off input power using the disconnect | |
| area as practical. Work cables connected to the building |
| |
| framework or other locations away from the welding area |
| switch at the fuse box before working on |
| increase the possibility of the welding current passing |
| the equipment. |
| through lifting chains, crane cables or other alternate cir- | 8.b. Install equipment in accordance with the U.S. National | |
| cuits. This can create fire hazards or overheat lifting chains |
| Electrical Code, all local codes and the manufacturerʼs |
| or cables until they fail. |
| recommendations. |
6.h. Also see item 1.c. | 8.c. Ground the equipment in accordance with the U.S. National | ||
6.I. | Read and folllow NFPA 51B “ Standard for Fire Prevention |
| Electrical Code and the manufacturerʼs recommendations. |
| During Welding, Cutting and Other Hot Work”, available |
|
|
| from NFPA, 1 Batterymarch Park,PO box 9101, Quincy, Ma | Jan 07 | |
| |||
6.j. Do not use a welding power source for pipe thawing. |
|
| |
POWER FEED 10 / R
