From: ahalltoxic**At_Symbol_Here**msn.com 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**safetyequipment.org. Alan H. Hall, M.D. TCMTS, Inc. Laramie, WY ahalltoxic**At_Symbol_Here**msn.com
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