Aug 30 2019 · The following is a brief introduction of the steam boiler safety valve calibration process: 1. According to the regulations of steam boiler safety technology supervision issued by the state the safety valve after maintenance should be checked in thermal state and the back-seat pressure difference should be 4%-7% of the starting pressure with the maximum not exceeding 10%.
All boilers require pressure gauges for operation. All steam boilers require siphons or traps to protect the pressure gauge. All steam boilers require gauge glasses to operate except those not having a fixed water level such as forced flow steam generators (Ontario Regulation 219/01: Operating Engineers also requires gauge glass shields)
Look for potential problems. Before startup ensure the boiler room is free of all possibly dangerous situations such as flammable materials or mechanical or physical damage to the boiler or related equipment. Clear intakes and exhaust vents; check for deterioration and