Boiler Safety

There are four major categories of catastrophic failure which exists in the boiler itself. 1. Melt down. This is a result of the heating surface metal reaching its melting point. It is a result of the boiler operating on very low water conditions. This by itself will not cause an explosion but will do major damage to the boiler and create a dangerous situation which could lead to an explosion. | Boiler Safety Developed by Western Iowa Tech Community College This material was produced under a grant (SH-16634-07-60-F-19) from the Occupational Safety and Health Administration, . Department of Labor. It does not necessarily reflect the views or policies of the . Department of Labor, nor does the mention or trade names, commercial products, or organization imply endorsement by the . government. 8-1 Introduction and overview. Boiler Room Hazards A Risk Of Explosion Exists High Pressure steam Combustion Gases Chemicals Moving Machinery Hot Surfaces 8-2 There are four major categories of catastrophic failure which exists in the boiler itself. 1. Melt down. This is a result of the heating surface metal reaching its melting point. It is a result of the boiler operating on very low water conditions. This by itself will not cause an explosion but will do major damage to the boiler and create a dangerous situation which could lead to an explosion. 2. Thermal Shock This is a condition where low water causes the heating surfaces to become overheated and then cooler water is added. The water then flashes to steam which expands 1600 times its volume as water and causes the explosion because there is not enough room for the steam to expand. explosions These can be a result of gases which build up and an ignition source ignites the gases. This can happen inside the boiler or outside. There are safety devices in place to avoid these situation and we will discuss these in the following slides. 4. Steam Pressure Excessive steam build up which exceeds the design pressures of the vessel. There are also safety device to prevent this. Communication is Critical Boiler operation information is communicated to the boiler operator starting the shift to specify any special procedures required. 8-3 Communicate any special conditions, which safety checks were completed and what needs to be done, the boiler operator should have a duty checklist listing routine duties.

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