This is new to me but, I have been in several discussions about NFPA 99 definition vs. UFC definition of storage for Maximum Allowed Quantities MAQ of oxidizers. UFC does not recognize the “in process” definition of an E cylinder or D cylinder is a portable cylinder cart or cylinder holder affixed to a gurney, bed or wheel chair. The UFC…

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Here we go! This is one of those responses I have to be careful not to cause trouble.

I remember reading an ASTM B819 document referencing 58H tempered copper required for medical gas copper tube. It was a recent edition of the standard which included a less hard version of the 58H requirement.

I remember vaguely it had to do with the vertical…

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This sounds like a vacuum bottle catch situation that requires monitoring. It would be intermittant suction because the catheter is inserted in the peritoneum and that would be the only way it would work.

WELL, THIS WAS FUN TO READ. Plus / Sorry of the delayed respond. My first major question or request is or would have been! What year printed edition of NFPA 99, was this system designed and approved for patient use? Additionally what category space, was this system designed and approved for patient use?