Minnesota Safe Boiler Operation Fundamentals(Special Engineer's Study Guide)Latest Updated A+ Guide Solution

How often should a try lever test be performed for a low pressure steam/hot water boiler? (Ans- Every 3 months How often should a try lever test be performed for a high pressure steam boiler? (Ans- Every 6 months pop test (Ans- safety valve test used to determine if a safety valve opens at the proper pressure within allowable tolerances -- must be performed with at least 2 licensed engineers present -- performed annually accumulation test (Ans- used to establish that a relief valve or relief safety valve is in good operating condition -- performed by 2 licensed engineers How do you perform a pop test? (Ans- Slowly build pressure in boiler until setpoint of safety valve is reached. When valve pops, the firing rate is reduced or burner is shut off to drop pressureHow do you perform an accumulation test? (Ans- Close all discharge piping valves and set burners at 100%. The pressure of the boiler reaches the pressure of the safety valve, the valve opens, and the boiler pressure should not rise more than 5 psi above the MAWP at any time during the test LWCO (Ans- Low Water Fuel Cut Off — shuts burner off in low water conditions first law of thermodynamics (Ans- Energy cannot be created or destroyed second law of thermodynamics