Question 363General Subjects - 1st Asst/Chief
70% to passA periodic hydrostatic test is being performed on an oil-fired auxiliary water-tube boiler with a maximum allowable working pressure of 150 psig. In accordance with 46 CFR 61, what is the required hydrostatic test pressure for this procedure?
A165.0 psig
B187.5 psig
C225.0 psig
D300.0 psig
AI Explanation
The correct answer is B) 187.5 psig. According to 46 CFR 61.10-5(a), the required hydrostatic test pressure for a periodic hydrostatic test on an oil-fired auxiliary water-tube boiler with a maximum allowable working pressure (MAWP) of 150 psig is 1.25 times the MAWP, which equals 187.5 psig. The other options are incorrect because: A) 165.0 psig is less than the required 1.25 times the MAWP. C) 225.0 psig is more than the required 1.25 times the MAWP. D) 300.0 psig is significantly higher than the required 1.25 times the MAWP.
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