Graham,

I know how I managed a case like this several years ago for my company.  

Now realize that ESD rules may have changed.  

We were running HiPot test and there was concern for the operator should a 
safety system fail.  First step, no wriststrap.  Second step, since operators 
were dissipative footwear, an insulative mat on the conductive floor to keep 
the operator at a high resistance level. Third step an ionizing blower mounted 
above the station blowing down in front of the card cage and over the floor 
mat.  We never had an ESD event recorded at these stations over the course 
of 3 years of operation.

Some ideas for you.  Check the latest ESD Association standards for more.  

At somewhere above 120VAC the wriststrap and footwear are not to be used.

Drew Meyer

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------