OOPS wrong button didn't mean to send it back.... -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Judy Brown Sent: Friday, June 03, 2005 12:17 PM To: [log in to unmask] Subject: Re: [TN] NTC: electronic jokes I hear that! When I was in the Materials and Processes lab at Singer Kearfott we had a platers helper (deaf) who was trying to heat up the concentrated sulfuric acid etch back tank and it got too hot, so he used a hand pump and was putting it into a 5 gallon non tempered glass Sparkletts water bottle to cool it. I learned hand signals VERY quickly and averted a real disaster. Some of the best intentions go awry............. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Barmuta, Mike Sent: Friday, June 03, 2005 8:54 AM To: [log in to unmask] Subject: Re: [TN] NTC: electronic jokes Hi Joe: That reminds me of another PCB shop story. DO NOT TRY THIS AT HOME! This was about 20+ years ago. We had a lab tech that we called "Fast Ronnie" he was always in a hurry and never followed established procedures very well. We were running a sulfuric/peroxide microetch on our electroless Cu line. After the mircoetch bath was analyzed Ronnie was supposed to make an add of concentrated H2SO4(98%) and concentrated H2O2(50%). Adds were made using a polypro 3L graduated cylinder which resembles a small cannon. Anybody that understands basic chemistry knows not to combine concentrated sulfuric acid with a strong oxidizer(conc hydrogen peroxide). The adds are to be made independently and thorough rinsing of the graduated cylinder done before the next chemical is added. Well Fast Ronnie lived up to his nickname, he added the sulfuric but was is such a hurry it did not completely empty the cylinder. There was still part of the sulfuric left in the bottom. He then added the conc peroxide and started to walk over to the microetch tank... he never made it. The chemicals combined and the whole thing went off like the cannon it was. Blew out over a dozen ceiling tiles, rained sulfuric peroxide over the tanks and platers. Some of the platers claimed they saw yellow/tan fireballs shooting across the room like a fireworks display. The only thing that saved Ronnie was his face shield and rubber apron and gloves. Needless to say we had a fun time with the Fire dept, OSHA and the insurance guys. Ronnie thankfully transferred into MLB lamination area. Mike Barmuta Fluke Corp. -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Joe Fjelstad Sent: Friday, June 03, 2005 6:48 AM To: [log in to unmask] Subject: Re: [TN] NTC: electronic jokes It appears the merry pranksters are alive and well. Of course, none of this could or would be done today without fear of serious legal reprisals and lots of money for pain and suffering (with the lawyer getting 50% or any proceeds). It reminded me, however, of a more harmless event some 30 plus years ago. I came in early (about 3AM) on 3rd shift at a PCB shop I was working at one winter day to run analysis on some copper plating baths that were being carbon treated. I wander out to the plating area to find 3 of the platers sitting in a 400 gallon plating tank (post rinsing) and refilled with RO water which had been heated to a comfortable temperature. It was pretty comical sight. Needless to say they were told clean the tank again after the major "bits" of "organic contamination" were removed and not to repeat the activity. Cheers, Joe --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 -----------------------------------------------------