MAGNATECH 427A, Operating & Maintenance Instruction Manual, Page: 21 / 113

OPERATING & MAINTENANCE INSTRUCTION MANUAL
MODELS 427A (R-1), 428A (R-2), AND 429A (R-3) WELD HEADS REV. AB
MODEL 514 TUBEMASTER OR 515/516 PIPEMASTER POWER SUPPLY
13
THESE DOCUMENTS, AND THE CONTAINED INFORMATION HEREIN, ARE PROPRIETARY AND ARE NOT TO BE REPRODUCED, USED OR DISCLOSED TO
OTHERS FOR MANUFACTURE OR FOR ANY OTHER PURPOSE, EXCEPT AS SPECIFICALLY AUTHORIZED, IN WRITING, BY MAGNATECH, LLC
5.2 Welding
WELDING CAN CAUSE FIRE OR EXPLOSION
Welding on closed containers, such as tanks, drums, or pipes, can cause them to blow up. Sparks can fly
off from the welding arc. The flying sparks, hot workpiece, and hot equipment can cause fires and burns.
Accidental contact of electrode to metal objects can cause sparks, explosion, overheating, or fire. Check
and be sure the area is safe before doing any welding.

Remove all flammables within 35 ft (10.7m) of the welding arc. If this is not possible, tightly cover
them with approved covers.

Do not weld where flying sparks can strike flammable material.

Protect yourself and others from flying sparks and hot metal.

Be alert that welding sparks and hot materials from welding can easily go through small cracks and
openings to adjacent areas.

Watch for fire, and keep a fire extinguisher nearby.

Be aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.

Do not weld on closed containers such as tanks, drums, or pipes, unless they are properly
prepared according to AWS F4.1,
Safe Practices for the Preparation of Containers and Piping for
Welding and Cutting (see Section 5.5 , Principle Safety Standards ).

Do not weld where the atmosphere may contain flammable dust, gas, or liquid vapors (such as
gasoline).

Connect work cable to the work as close to the welding area as practical to prevent welding current
from traveling long, possibly unknown paths and causing electric shock, sparks, and fire hazards.

Do not use welder to thaw frozen pipes.

Remove stick electrode from holder or cut off welding wire at contact tip when not in use.

Wear oil-free protective garments such as leather gloves, heavy shirt, cuffless trousers, high
shoes, and a cap.

Remove any combustibles, such as a butane lighter or matches, from your person before doing
any welding.

After completion of work, inspect area to ensure it is free of sparks, glowing embers, and flames.

Use only correct fuses or circuit breakers. Do not oversize or bypass them.

Follow requirements in OSHA 1910.252 (a) (2) (iv) Welding, Cutting, and Brazing, General
Requirements and NFPA 51, Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work for hot work and have a fire watcher and extinguisher nearby.
5.2.1 Flying Metal or Dirt
FLYING METAL OR DIRT CAN INJURE EYES

Welding, chipping, wire brushing, and grinding causes sparks and flying metal. As welds cool, they
can throw off slag.

Wear approved safety glasses with side shields even under your welding helmet.