Codes, Standards, and Regulatory Compliance
Core concepts
Boiler safety is governed by codes and standards that set construction, installation, inspection, and operating requirements. Know the roles of the ASME Boiler and Pressure Vessel Code (construction and stamping), the National Board Inspection Code (in-service inspection and repairs), and jurisdictional rules (state and local boiler laws, operator licensing, and inspection intervals). Know that the nameplate carries the MAWP, design temperature, and stamp; the boiler must be operated within those limits. Know that repairs to pressure parts require qualified procedures, qualified welders, and often jurisdictional or authorized inspector approval.
Compliance topics include: required inspections at intervals set by the jurisdiction, operator certification and licensing, recordkeeping, safety valve setting and sealing, and reporting of accidents. Know that altering a boiler's pressure parts or safety devices without approval is a violation, and that the authorized inspector has authority to require corrective action.
Traps
Questions test whether the ASME code covers in-service inspection (no, that is the National Board and jurisdiction), whether an operator may raise the safety valve setting (no, only within code limits and with approval), and whether a repair can be made without a qualified procedure (no). Another trap: assuming a boiler built to code is exempt from jurisdictional inspection.
Worked example
Rule of thumb: if a repair touches a pressure part, stop and confirm the procedure, welder qualification, and inspector approval before work begins; undocumented repairs can void the boiler's certification.