From: Allen Niemi <anniemi**At_Symbol_Here**MTU.EDU>
Subject: Re: [DCHAS-L] plumbing H2 from remote location
Date: Thu, 1 Oct 2015 12:22:24 -0400
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: CAN0bzO6YjK9xMdXruR1=rZcUv8DJftFsWNMTG7=amchBGwZhaA**At_Symbol_Here**
In-Reply-To <2E68EA190EA75E4C9399D75B40B6346679A3A73B**At_Symbol_Here**>

We use hydrogen gas for a variety of purposes directly from the tank, including glassware manufacture and repair and a variety of furnace atmosphere applications. New Michigan hydrogen storage rules apply here when more than 400 SCF are stored in one fire area, which does not affect most of our operations. If standard flammable gas plumbing and leak testing procedures are followed (including what happens to the gas as it leaves the instrument) I see no reason to install the tank remotely unless your local fire codes and authorities require it. I hope your plans include security provisions for access to the tank if it is installed outside the lab. Increasing the distance will also increase the amount of gas needed to fill and purge the lines.


On Thu, Oct 1, 2015 at 11:24 AM, Rogers, Janet <ROGERS**At_Symbol_Here**> wrote:

To All:

We need to use H2 gas for FID-GC. Our campus EH&S officer wants us to plumb H2 gas from a cylinder placed at some remote location (as yet unknown to me, but I've heard both: a) from the hallway and b) from outside the building) to our instrument lab. We do not see why we cannot use the H2 cylinder in the instrument lab, next to the instrument, as we have been doing. Increasing the distance between the H2 cylinder and the instrument seems like it would increase the safety risk.

I'd appreciate hearing your thoughts/comments/experience in handling H2 safely in your labs.

Janet Rogers, Ph.D.


Chemistry Department

Edinboro University of Pennsylvania

230 Scotland Road

Edinboro, PA 16444

phone: 814.732.1539

e-mail: rogers**At_Symbol_Here**

Allen Niemi, PhD
Occupational Safety and Health Services
Room 322 Lakeshore Center
Michigan Technological University
Phone: 906-487-2118
Fax: 906-487-3048

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