Systems & Code第 43 / 110 题
In a medical gas piping system, oxygen and other medical gases must use tubing that is cleaned and labeled for the service. What copper tubing is required for medical gas distribution?
a.Type M copper, brazed
b.PVC schedule 40
c.Type L or K copper, cleaned for oxygen service, brazed with joints purged with nitrogen
d.Galvanized steel, threaded
解析
Medical gas distribution uses type L or K copper specifically cleaned and capped for oxygen service, brazed with a nitrogen purge to prevent internal oxide (copper scale) formation. The nitrogen purge keeps the interior clean so particles cannot enter patient equipment. Type M, plastic, and threaded steel are all prohibited for medical gas.
法律依据: NFPA 99免费刷完整 110 道题库 — 无需注册。
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