Medical Gas vacum piping?

[mtlogcabin]

NFPA99C 5.1.3.6.1.2(5)

Piping between the vacum pump(s), discharge(s), receiver(s), and the vacum source shutoff valve shall be in accordance with 5.1.10.2 except that stainless, galvanized, or black steel pipe shall be permitted to be used.

The plumber wants to use galvanized pipe on the discharge lines. The manufacture requires non-corrosive pipe, the engineers, designer, installer, and the hospital are all okay with the galvanize pipe but want my approval (local AHJ)

Anybody have pros or cons comments

 

[cda]

Do not have the book

What does IFC say??

Also call the manufactur and see what they say

 

[Gregg Harris]

Depending on what the valves, pumps, receivers, etc are made of galvanic corrosion can escalate and have a short service life.

 

[Gregg Harris]

Depending on what the valves, pumps, receivers, etc are made of galvanic corrosion can escalate and have a short service life.

 

[mtlogcabin]

The galvanized piping would be on the discharge (pressure) side of the pump only not the vacum so any corrosion of the pipe should be carried out to the atmosphere

 

[north star]

* *

The galvanized pipe is an approved type of pipe that can be used.

The manufacturer may want the stainless steel or hard drawn

type of copper [ re: NFPA-99, `05 Edition, Section 5.1.10.2 ].

* *

 

[Dr. J]

Not allowed.

NFPA99C 5.1.3.6.1.2(5)Piping between the vacum pump(s), discharge(s), receiver(s), and the vacum source shutoff valve shall be in accordance with 5.1.10.2 except that stainless, galvanized, or black steel pipe shall be permitted to be used.

A medical vacuum pump typically consists of multiple components piped together on a skid mounted factory package. The referenced piping here is just the factory piping within the packaged unit.

5.1.3.6.7.4 The exhaust shall be piped of materials approved for medical–surgical vacuum piping under 5.1.10.2.

This is the pipe between the packaged unit and the outdoors. No exception for galvanized.

5.1.10.2.1 Piping for vacuum systems shall be constructed of any of the following:

(1) Hard-drawn seamless copper tube:

(a) ASTM B 88, Standard Specification for Seamless Copper Water Tube, copper tube (Types K, L, M)

(b) ASTM B 280, Standard Specification for Seamless Copper Tubing for Air Conditioning and Refrigeration Field Service, copper ACR tube

© ASTM B 819, Standard Specification for Seamless Copper Tube for Medical Gas Systems, copper medical gas tubing (Type K or L)

(2) Stainless steel tube

 

[north star]

= &

"No exception for galvanized."

Well knock me over with a feather! Great catch "Dr. J"!



& =

 

[peach]

all med gas needs to be certified by agencies certified to certify med gas. Buy the standard

 

[mtlogcabin]

Not allowed.A medical vacuum pump typically consists of multiple components piped together on a skid mounted factory package. The referenced piping here is just the factory piping within the packaged unit.

5.1.3.6.7.4 The exhaust shall be piped of materials approved for medical–surgical vacuum piping under 5.1.10.2.

This is the pipe between the packaged unit and the outdoors. No exception for galvanized.

5.1.10.2.1 Piping for vacuum systems shall be constructed of any of the following:

(1) Hard-drawn seamless copper tube:

(a) ASTM B 88, Standard Specification for Seamless Copper Water Tube, copper tube (Types K, L, M)

(b) ASTM B 280, Standard Specification for Seamless Copper Tubing for Air Conditioning and Refrigeration Field Service, copper ACR tube

© ASTM B 819, Standard Specification for Seamless Copper Tube for Medical Gas Systems, copper medical gas tubing (Type K or L)

(2) Stainless steel tube

A big THANK YOU Dr J it took a little bit but the contractor and state medical gas inspector aggreed with what you provided.