Safety Procedures & PPE 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 Safety Procedures & PPE flashcards as text
What is the maximum allowable voltage for electrode holders used in humid or confined space welding conditions, per safety guidelines?
Answer: 50V AC or 60V DC
In damp or confined conditions, lower open-circuit voltages (50V AC / 60V DC) are recommended to reduce electrocution risk from increased conductivity.
A Safety Data Sheet (SDS) for a welding electrode must be consulted primarily to determine:
Answer: The chemical composition and hazardous exposure limits of fumes generated
The SDS identifies hazardous components in electrode coatings and fumes, along with permissible exposure limits and required PPE.
What physical hazard is specific to plasma arc cutting that requires additional PPE beyond standard welding protection?
Answer: Intense noise levels often exceeding 100 dB, requiring hearing protection
Plasma arc cutting generates intense noise levels that can exceed 100 dB, making hearing protection mandatory in addition to standard welding PPE.
When welding overhead, which additional precaution must a welder take to prevent burn injuries?
Answer: Wear a leather cape, sleeves, or jacket to protect the neck and shoulders from falling spatter
Overhead welding causes molten spatter to fall onto the welder, requiring leather cape sleeves or a jacket to protect the upper body and neck.
What is the proper procedure for handling a leaking acetylene cylinder valve that cannot be closed?
Answer: Move the cylinder outdoors, away from ignition sources, and call the supplier immediately
A leaking acetylene cylinder with a non-closing valve should be moved to a safe outdoor location away from ignition sources, and the gas supplier contacted immediately.
According to AWS safety guidelines, what should a welder do before welding on any used container, drum, or pipe?
Answer: Verify the container has been purged, cleaned, and tested free of flammable or toxic residues
AWS and OSHA require that used containers be thoroughly purged, cleaned, and tested for residues before any welding or cutting to prevent explosions.
Which OSHA permissible exposure limit (PEL) applies to manganese fumes generated during welding operations (as a ceiling value in some standards)?
Answer: 0.2 mg/m³ (ceiling)
OSHA's PEL for manganese fumes is a ceiling value of 5 mg/m³, but ACGIH recommends a much lower TLV-TWA of 0.02 mg/m³ due to neurological risk; 0.2 mg/m³ is a common referenced ceiling in welding guidance.