Egon (and fellow list members), I think you meant to reply to Scott Douglas. Lately, I have received several emails which were replies to him. Since most of them were probably initiated by clicking on the "Reply" button, I suspect some internet glitch is at fault. Scott's company is located about 40 miles north of us, so our email probably follows similar paths. List members: When replying, double-click on the alias (the name which appears on the "To" line) to bring up the Properties dialog box.
The email address for Scott Douglas is: s_doug...@ecrm.com <mailto:s_doug...@ecrm.com> My email address is: sla...@foxboro.com <mailto:sla...@foxboro.com> Ain't computers wonderful :-) Scott Lacey -----Original Message----- From: Egon H. Varju [SMTP:e...@varju.bc.ca] Sent: Wednesday, November 17, 1999 8:06 PM To: EMC-PSTC Subject: RE: Shielded Enclosure Fire Hazard Scott, I presume you mean Halon, not halogen. Sorry, but Halon systems are neither invisible nor odourless. When you set one off, the room fills with a smoky haze that has quite a strong odour. I presume that this is due to additives that are included for the very purpose of making it obvious. By the way, when you set one of these things off, there is a very loud, explosive noise. Not sure if this is due to an explosives charge opening the pressurized cylinder, or just the explosive expansion of the gas. Regardless, you'd have to be deaf (and blind) to not realize that the system had deployed. In a previous incarnation, I used to work on oil rigs in the Arctic Ocean. I once had the dubious distinction of setting one of these things off (due to a tantalum cap on one of my PWBs). Just imagine sitting there in the middle of winter, in that complete silence of the Arctic, and all of a sudden there is this incredible explosion and smoke ... Needless to say, a change of underwear was in order. No, there is no danger of missing the fact that there is halon in the air. As for breathing the stuff, I'm not aware of any actual harm. Yes, it displaces the normal oxygen, so you obviously can't live on it, but it's not poisonous, just neutral. I'm sure I got quite a lungfull of the stuff, but there was no harm done. No big deal. Egon :-) At 12:25 PM 17/11/1999 , you wrote: --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
