Most of this discussion has used the term “lock out” however many of the suggestions have been means of cutting off the gas flow that may be useful at times but do not meet the requirements of a lock out process. For example, installing a plug in place of the hose barb seems like a good thing for some extended maintenance operations, but is not something where the “key” can be under the control of the person working on the system.
There are purpose-designed lock out devices that are plastic clam-shells sized to fit over valves that work by twisting, like a faucet, or over electrical plugs,. A lock can be used to keep the cover closed, and when closed the valves cannot be turned, or the plug cannot be plugged in. That meets the requirements of a lock out device.
I suspect devices of this kind can be found that will fit over the gas valve. I am not suggesting they are inexpensive, but they are there and comply with lock out requirements.
Our potential client is a contractor who has it in his bid specs but no particular mechanism is specified. No idea what the rationale behind the specification is. While it would certainly be interesting to know and something to discuss with the project manager who authored the bid, this gets beyond the original question which is can it be done on individual valves and, if so, how.
Obviously, if they don't want to use gas in the lab anymore or restrict it to one or two outlets, there are smarter/better ways to do it, but in the absence of specific details, we are dealing with hypotheticals. If I find out more about the reasoning I'll let y'all know.
Safety Emporium - Lab & Safety Supplies featuring brand names
you know and trust. Visit us at http://www.SafetyEmporium.com
esales**At_Symbol_Here**safetyemporium.com or toll-free: (866) 326-5412
Fax: (856) 553-6154, PO Box 1003, Blackwood, NJ 08012
On Sep 18, 2013, at 12:19 PM, James Keating <jameskeating1944**At_Symbol_Here**GMAIL.COM> wrote:
1. Why do you want to lock the valve.
2. Remember this is a hazardous (explosive) gas. If you are “locking” the valve as part of an energy isolation program to perform maintenance and the valve is part of that lockout boundary your lockout/tag out energy control procedure must be followed.
3. If you do not have a stored energy control lockout/tag out program you must develop and implement one.
Previous post | Top of Page | Next post