Type III — Low-PressureCâu 162 / 240
When pressurizing a low-pressure appliance to search for leaks, what is the maximum pressure a technician may apply?
a.5 psig
b.10 psig
c.15 psig
d.20 psig
Giải thích
A low-pressure appliance must never be pressurized above 10 psig. The shell is protected by a rupture disk that typically relieves at 15 psig, so staying under 10 psig keeps a safe margin below that disk. Higher pressures risk bursting the rupture disk and venting the charge.
Trích dẫn luật: 40 CFR §82.156Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A technician is recovering R-11 from a low-pressure centrifugal chiller for a tear-down. To what evacuation level must the appliance be recovered?
- The rupture disk on a low-pressure chiller is a safety device that is typically designed to relieve at what pressure?
- What is the primary purpose of a purge unit on a low-pressure centrifugal chiller?
- Which of the following is a low-pressure refrigerant used in centrifugal chillers?
- Because a low-pressure chiller operates in a vacuum on the low side, what happens when it develops a leak?
- Water entering the refrigerant side of a low-pressure chiller through a leaking tube is dangerous mainly because it can:
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