New York Low Pressure Boiler COF Practice

The safety valve on a forced steam flow generator must pop at what percentage of the MAWP?

1. No less than 10% and no higher than 20%

2. No less than 20% and no higher than 30%

3. No less than 5% and no higher than 15%

4. No less than 30% and no higher than 40%

The correct answer is: No less than 10% and no higher than 20%

The safety valve on a forced steam flow generator is designed to ensure the safety of the system by releasing excess steam pressure. According to industry standards, the safety valve is required to pop or open at a pressure that is no less than 10% and no higher than 20% above the Maximum Allowable Working Pressure (MAWP). This range is crucial because it provides a sufficient buffer that allows the system to manage unexpected pressure increases without risking damage or failure. Additionally, having this range for the popping pressure helps maintain a safe operating environment. If the valve opens too early (below 10%) or too late (above 20%), it may not effectively protect the boiler or steam generator from overpressure conditions, which could lead to catastrophic failures. Therefore, the established percentage range is vital in ensuring that safety mechanisms in steam systems operate effectively.