Date: Wed, 28 Jan 2009 12:22:47 -0500
Reply-To: List Moderator <ecgrants**At_Symbol_Here**UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: List Moderator <ecgrants**At_Symbol_Here**UVM.EDU>
Subject: Re: Eyewash / shower flushing frequency

From: 	ahalltoxic**At_Symbol_Here**
Subject: 	RE: [DCHAS-L] Eyewash / shower flushing frequency
Date: 	January 28, 2009 4:56:22 PM EST

Ralph et al,

Please note that the ISEA/ANSI Z358.1 Standard is in the process of  
being revised.  The current draft (December 2008) states under section  
5.5.2:  "Plumbed eyewashes shall be activated weekly for a period long  
enough to verify operation and ensure that flushing fluid is  
available.  (See Appendix B7)."

The current draft of Appendix B7 reads:  "Weekly Activation for  
Plumbed Equipment"
"The intent of the weekly activation to be conducted on plumbed  
emergency equipment is to ensure that there is a flushing fluid supply  
at the head of the device and to clear the supply line of any sediment  
build-up that could prevent fluid from being delivered to the head of  
the device and minimize microbial contamination due to sitting water.   
The duration of this test is dependent on the volume of water  
contained in the unit itself and all sections of pipework that do not  
form part of a constant circulation system (also known as "dead leg"  
portions).  Water in these sections is static until a flow is  
activated by opening a valve.  The goal is to flush out stagnant water  
in the dead leg completely.  Where mixing valves are used, both the  
hot water and cold water supplies to the valve must be considered."

This revision is still in progress, and those of us on the Revision  
Committee will have a teleconference next week.  My suggestion is to  
do weekly activation of all plumbed emergency eyewash equipment and I  
encourage all D-CHAS members who have responsibility for such  
equipment to obtain and follow the new ISEA/ANSI Z358.1 Standard once  
it has gone through the revision and review process.  The current ANSI  
Z358.1 Standard can be obtained by contacting Cristine Fargo at the  
International Safety Equipment Association, cfargo**At_Symbol_Here**

Alan H. Hall, M.D.
Laramie, WY

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