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169. A periodic hydrostatic test is being performed on a main steam line between the boiler drum and the throttle valve which has a maximum allowable working pressure of 960 psig. In accordance with 46 CFR Subchapter F (Marine Engineering), what is the required hydrostatic test pressure for this procedure?
The hydrostatic test pressure for a main steam line is 1.25 times the maximum allowable working pressure (MAWP). Therefore, the required test pressure is 1.25 multiplied by 960 psig, resulting in 1200 psig.
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