Methods used to ensure boiler is in working order.
Before a new boiler is initially fired, it should be given a complete and thorough inspection on both the fire side and water side. [pic] [pic]
External examination of the boiler should include the visual inspection of the outer surfaces during operation as stated earlier. Other external points that should be inspected and examined include the gauge glasses, water column(s), water level controls, high and low-water alarms and cutoffs, blowoffs, blowdown, feed water valves, check valve, feed line at the entry to the boiler, safety valves, and boiler stop valves or non-return valves. All piping connecting these various controls and accessories should be checked to make certain there are no deposits to stop or impede proper flow through the piping and to the controls.
Examination is necessary of all the pressure parts, drums, tubes, water column(s), blowoff and blowdown valves, safety or safety relief valves, baffles, nozzles, refractory setting, seals, insulation, casing, etc. If any foreign material is found in the boiler, it should be removed.
The period of initial inspection is also a good time for the insurance inspector to check out the boiler. As a general rule, the inspectors like to have an opportunity to inspect the boiler prior to the hydrostatic test.
A hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and leaks. The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection, and pressurization of the vessel to the specified test pressure.
The boiler should
References: Date : December 4 , 2012