Safety, Codes, and Regulatory Compliance
Domain focus
This domain tests code jurisdiction, inspections, safety valves, permits, lockout/tagout, confined space, hot work, and incident reporting. Class 1 candidates must know which requirement applies and who has authority.
Core rules
- ASME construction codes set design and stamping; the National Board Inspection Code covers repair and alteration; jurisdictional rules govern operation and inspection.
- Safety valves protect the pressure boundary; set pressure, capacity, and accumulation must meet the applicable code.
- Operating certificates, inspections, and records are legal requirements, not paperwork.
- Lockout/tagout, confined-space entry, and hot-work permits control hazardous energy and ignition.
- Report incidents and near misses; do not alter evidence before investigation.
Worked example
A boiler has MAWP 1,000 psig. A safety valve set at 1,000 psig may allow pressure to rise to 1,100 psig at rated capacity under the 10% accumulation rule. If the valve is set at 1,050 psig, the same 10% accumulation could reach 1,155 psig, exceeding the allowable accumulated pressure unless the code permits it. The reasoning: accumulation is measured above MAWP, so set pressure and accumulation interact. Verify the valve capacity and code edition.
Traps
Treating a standard as law without checking jurisdiction; using an expired certificate; bypassing a safety device; and assuming a repair does not require inspection. Also do not confuse MAWP with design pressure.