Historic Boiler Inspection Procedures
It is recommended to schedule historic boiler inspections with a minimum of a 30-day advance notice. Please contact email@example.com to schedule the inspection.
- Have boiler full of water and ready to hydro.
- Safety valve removed and opening blanked/flanged off.
- Note: Have test gauge and pump ready.
When performing hydrostatic pressure testing for verification of leak tightness or when required by the jurisdiction, the following requirements shall be met:
- Hydrostatic pressure test shall be between the calculated maximum allowable working pressure and 1.25 times the calculated maximum allowable working pressure, and held for a minimum of 10 minutes or as required to perform a complete visual examination.
- The metal and water temperature of the boiler shall be between 60 degrees F to 120 degrees F (16 degrees C to 49 degrees C) anytime a hydrostatic test is being performed.
- A calibrated gage, acceptable to the inspector, shall be used when hydrostatically pressure testing boiler.
- Drain and open boiler for internal inspection.
- Note: Grates should be removed prior to hydro.
- If dry bottom, ash pan should be removed prior to hydro.
Internal Surfaces should be cleaned prior to hydro.
- Open all handholds and manholes.
- If bolted, remove steam dome cover.
- Remove fusible plug and have new ASME plug ready to install.
- Remove caps/plugs from crosses and tees on pipe connections.
- Assure all hand valves will open and close properly.
- Be prepared to remove pipe fittings as requested.
Have copies of the following information on hand for the inspector:
- Any technical references related to the boiler.
- Any current or past inspection documentation.
- Any documents concerning past repairs.