SAW Safety Systems & Standards 3 — Questions and Answers
Question 1: Which OSHA standard specifically addresses hazard communication and Safety Data Sheets (SDS) for flux materials used in SAW?
- 29 CFR 1910.1200 (HazCom / GHS) (Correct answer)
- 29 CFR 1910.146
- 29 CFR 1910.252
- 29 CFR 1910.133
Correct answer: 29 CFR 1910.1200 (HazCom / GHS)
OSHA's Hazard Communication Standard (HazCom 2012), aligned with GHS, requires SDS for all hazardous chemicals including welding fluxes.
Question 2: An SDS for a SAW flux lists Section 8 as 'Exposure Controls/PPE.' What information is found here?
- Recommended PPE, engineering controls, and occupational exposure limits (Correct answer)
- First aid procedures for flux contact
- Storage and handling requirements
- Physical and chemical properties of the flux
Correct answer: Recommended PPE, engineering controls, and occupational exposure limits
Section 8 of the GHS-aligned SDS specifies exposure limits, required respiratory protection, and other engineering controls.
Question 3: When SAW wire electrodes are stored improperly and become corroded, the primary safety concern during welding is:
- Generation of toxic fumes from corroded surface contaminants (Correct answer)
- Reduced electrical conductivity only
- Increased spatter with no fume risk
- Wire feeder jam without arc hazard
Correct answer: Generation of toxic fumes from corroded surface contaminants
Corroded wire can release additional toxic metal oxides and hydrogen when melted, increasing fume hazard beyond normal SAW levels.
Question 4: Which fall protection requirement applies when performing SAW on a structure at a height of 6 feet or more in general industry?
- A fall protection system (guardrails, safety net, or personal fall arrest) must be in place (Correct answer)
- Only a warning line system is required
- No fall protection is needed if a spotter is present
- Fall protection is only required above 10 feet
Correct answer: A fall protection system (guardrails, safety net, or personal fall arrest) must be in place
OSHA 29 CFR 1910.28 requires fall protection at 4 feet in general industry; at 6 feet or more, a compliant system is mandatory.
Question 5: What is the correct procedure when a SAW power source's thermal overload protection trips during operation?
- Allow the unit to cool before resetting; investigate and correct the cause of overheating (Correct answer)
- Immediately bypass the overload and resume welding
- Add cooling water and reset without waiting
- Replace the thermal fuse and continue at the same parameters
Correct answer: Allow the unit to cool before resetting; investigate and correct the cause of overheating
Thermal overloads signal that the duty cycle or ambient conditions are causing overheating; resuming without addressing the cause risks equipment damage and fire.
Question 6: Which grounding method is required to prevent electric shock when SAW equipment is used outdoors on a wet surface?
- All metal parts of the equipment must be grounded via a third-wire equipment ground and a GFCI where applicable (Correct answer)
- Rubber mats alone are sufficient without electrical grounding
- Grounding is only required for AC power sources, not DC
- A single ground rod placed 10 feet from the operator
Correct answer: All metal parts of the equipment must be grounded via a third-wire equipment ground and a GFCI where applicable
ANSI/AWS Z49.1 and OSHA require proper equipment grounding and GFCI protection when welding in wet conditions to prevent lethal shock.
Question 7: A Hot Work Permit system is required before SAW operations in which situation?
- When welding in areas not specifically designed or designated for welding (Correct answer)
- Only when welding on pipelines
- When using AC power sources exclusively
- Only during night shifts
Correct answer: When welding in areas not specifically designed or designated for welding
Hot Work Permits are required by NFPA 51B and OSHA whenever welding is performed outside a designated welding area to control ignition hazards.
SAW Safety Systems & Standards 3
Which OSHA standard specifically addresses hazard communication and Safety Data Sheets (SDS) for flux materials used in SAW?