Date: Wed, 11 Nov 2009 13:10:20 -0600
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Cook, Ray" <rlcook**At_Symbol_Here**MARATHONOIL.COM>
Subject: Re: Hood Sash Cables
In-Reply-To: A

The beauty of cables is that they do not fail like chains with a single point failure, thus they are ideal in applications such as this.  Your inspection schedule should work fine for detecting defective cables long before the danger of failure exists and you can adjust the inspection frequency based on your experience.  The chance of a simultaneous failure of both cables is practically nil in the real world.

Raymond L. Cook, Jr, MSIH, CIH, CSP
Adv. Sr. HES Professional
Fire/Safety - Industrial Hygiene
(O) 713.296.3417
(C) 281.380.7727


From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of RJ Wolcik
Sent: Wednesday, November 11, 2009 12:26 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Hood Sash Cables

We are looking for some ideas on hood sash cables:

We inspect all our hood sash cables quarterly by a visually inspecting the cable and running a finger along the cable to feel for any bumps or frayed wire.  We use 3/32” stainless steel “aircraft grade” cables with a rating of 900 pounds.  We have found wire that has frayed in the middle of the twist and it is not visible without a magnifying glass, and if it were to give away while someone was in the hood, we would have a serious injury.  We are thinking about instituting a change schedule for all the cables. Does anyone have any ideas or comments?    

Does anyone have any information on cable breakage, or has anyone heard of an incident of both sash cables breaking at the same time causing the sash to completely fall?

Does anyone have a policy they would be willing to share?


R.J. Wolcik

Environmental Health and Safety

Strem Chemicals, Inc.

7 Mulliken Way, Dexter Industrial Park

Newburyport, MA 01950-4098, U.S.A.

Telephone: 978.499.1660

Fax: 978.499.1661

Email: rj**At_Symbol_Here**


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