Module 76: The safe use of gas in education buildings
Board of Boiler and Pressure Vessel Inspectors, more than 30,000 boiler and pressure vessel accidents have taken place in the U.S. since 1990. When boilers or furnaces experience an overheated condition, catastrophic damage to the heating unit, safety controls and components is likely. This emergency condition should be treated
What Your Boiler Pressure Should Be When It's Heated
at the correct pressure. Ensure that the main gas cock and other related valves are in their proper positions to initiate the start-up ignition sequence. Start the draft fan and check for normal operation. Stroke the air dampers to make sure they are free to move their full range. Make sure that there is an adequate supply of air available for the furnace; if it uses inside air check the room
When there is a boiler emergency, it is always helpful to have a contingency plan. Don't get caught unprepared. A little bit of planning will go a long way towards making sure that your boiler problems will be solved quickly and safely. Powerhouse is the boiler emergency expert.
Location and Access: (attached plan as appropriate) Boiler located within the plant room on the ground floor. Working Environment & Restrictions: Fully operating plant room, work to be undertaken after 5pm to allow for room closure. Protection of others: Warning sign placed on the outside of the plant room entrance. Emergency Procedures
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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