Welder Safety & Compliance Flashcards
7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Welder Safety & Compliance flashcards as text
Under OSHA 1910.252, how long must a fire watch be maintained after welding operations have stopped in an area with fire hazards?
Answer: 30 minutes
OSHA 1910.252(a)(2)(iii) requires a fire watch to be maintained for at least 30 minutes after welding or cutting operations have ended to catch smoldering fires.
Which AWS standard provides comprehensive safety requirements for welding and cutting operations?
Answer: AWS Z49.1 Safety in Welding, Cutting, and Allied Processes
AWS Z49.1 is the primary safety standard for welding and cutting, covering fume control, fire prevention, electrical safety, PPE, and confined space requirements.
What is the purpose of the 'buddy system' requirement when welding in a permit-required confined space?
Answer: To ensure an attendant is present outside who can summon rescue without entering
The attendant stationed outside a permit-required confined space maintains communication with the entrant, monitors conditions, and initiates rescue procedures without entering the space themselves.
Which condition makes it UNSAFE to use an oxygen cylinder without further inspection?
Answer: The valve outlet shows evidence of oil or grease contamination
Oil or grease in contact with high-pressure oxygen can ignite spontaneously or explode; oxygen cylinders and fittings must never be used if contaminated with hydrocarbons.
What does NIOSH certification of a welding respirator cartridge (e.g., OV/P100) indicate?
Answer: The cartridge has been tested and certified to meet minimum efficiency and capacity standards
NIOSH (National Institute for Occupational Safety and Health) tests and certifies respirator cartridges to verify they meet the filtration efficiency and other performance requirements set by 42 CFR Part 84.
When using a welding blanket to protect nearby equipment from weld spatter, what minimum fire resistance rating should the blanket material have?
Answer: Resistance to molten spatter at 2,500°F (1,371°C)
Weld spatter from SMAW or GMAW can reach temperatures exceeding 2,500°F; welding blankets used for spatter protection must be rated to withstand these temperatures without igniting.
A newly hired welder is assigned to weld on beryllium-copper alloys. What is the most critical health hazard requiring specific engineering controls beyond standard fume ventilation?
Answer: Chronic beryllium disease (CBD) from beryllium dust and fume inhalation
Beryllium is an OSHA-regulated carcinogen with a PEL of 0.2 µg/m³; even brief exposure can cause chronic beryllium disease, an irreversible lung condition, requiring specialized controls including enclosures and supplied-air respirators.