With the boiler pressure at a minimum of 75% of the safety valve set pressure, the safety valve try lever is lifted to wide open position. Steam is discharged for 5 sec to 10 sec. The try lever is released, and the disk should snap to the closed position against the valve seat. Malfunctioning safety valves must be replaced as soon as possible.
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boiler gas safety operation procedures. Safety Guideline for Boiler Operations in Machinery Spaces. Safety Precautions during Boiler Operation Maintenance and Cleaning During the operation cleaning and maintenance of boilers safe working practices are of paramount importance. Qualified personnel are to be familiar with correct operational and
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1. Ensure the draft fan is operating and close the safety shut-off valves. 2. Open the main manual gas supply valve and the vent valve. 3. Note the pressure gauge reading between the gas pressure regulator and the first safety shut-off valve. It should stabilize at the "lock-up"
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