What is the maximum allowable safety valve lifting pressure tolerance on boilers with a steam drum pressure between 711-1410 psi?

What is the maximum allowable safety valve lifting pressure tolerance on boilers with a steam drum pressure between 711-1410 psi?

• A. Plus or minus 5 psi
• B. Plus or minus 10 psi
• C. Plus or minus 15 psi
• D. Plus or minus 20 psi

Answer: (B)

The maximum allowable safety valve lifting pressure tolerance for boilers with a steam drum pressure between 711 and 1410 psi is plus or minus 10 psi. This value is established in order to ensure the effective operation of safety valves, which are critical for maintaining safe pressures within the boiler system. The 10 psi tolerance allows for some minor variations due to manufacturing tolerances and operational factors while still ensuring that the safety valve will function correctly to prevent overpressure situations. Staying within this range is essential for the protection of the equipment and personnel, as it helps to ensure that the safety system remains responsive when pressure levels increase to potentially dangerous levels. The other options exceed this range, which could compromise safety standards and operational efficiency. Thus, the specified tolerance of plus or minus 10 psi is crucial for safe boiler operation.

The maximum allowable safety valve lifting pressure tolerance for boilers with a steam drum pressure between 711 and 1410 psi is plus or minus 10 psi. This value is established in order to ensure the effective operation of safety valves, which are critical for maintaining safe pressures within the boiler system.

The 10 psi tolerance allows for some minor variations due to manufacturing tolerances and operational factors while still ensuring that the safety valve will function correctly to prevent overpressure situations. Staying within this range is essential for the protection of the equipment and personnel, as it helps to ensure that the safety system remains responsive when pressure levels increase to potentially dangerous levels.

The other options exceed this range, which could compromise safety standards and operational efficiency. Thus, the specified tolerance of plus or minus 10 psi is crucial for safe boiler operation.