Systems & CodeCâu 50 / 110
A medical gas distribution system has a working pressure of 50 psi. The installation acceptance test is performed at 1.5 times the working pressure. What is the required test pressure?
a.50 psi
b.75 psi
c.65 psi
d.100 psi
Giải thích
Test pressure = 1.5 x working pressure = 1.5 x 50 = 75 psi. Medical gas piping is proven at 1.5 times its operating pressure to confirm joints and cross connections hold under a margin above service conditions. The standing-pressure and cross-connection tests are performed at this elevated pressure before the system is placed in service.
Trích dẫn luật: NFPA 99Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
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