Which of the test pressures listed is...

Question 1 of 270705eccefa0bacbc34ba4d46d16

Which of the test pressures listed is considered to be satisfactory when conducting a hydrostatic test on a desuperheater, which has undergone a welding repair, and has been reinstalled in a boiler having a MAWP of 900 psi?

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Question 1 of 27070

🔍 Key Concepts

• MAWP (Maximum Allowable Working Pressure) of the boiler and attached parts • Typical hydrostatic test pressure as a percentage or multiple of MAWP after a welding repair • Difference between a normal working pressure test and a post-repair hydrostatic test

💭 Think About

• How does the required hydrostatic test pressure usually compare to the MAWP—lower than, equal to, or higher than MAWP? • Why might the code require a higher-than-MAWP pressure after a welding repair on a pressure part? • Looking at the choices, which value best represents the typical code percentage/multiple of a 900 psi MAWP for a repaired pressure component?

✅ Before You Answer

• Verify the standard rule-of-thumb test pressure used after welding on pressure vessels (often expressed as a fraction or multiple of MAWP). • Check which option corresponds most closely to that required fraction/multiple of 900 psi. • Ensure the chosen pressure is high enough to prove strength but not excessively high compared to common code practice.