Hi Well, let’s see, nearest operational facility is about 6 miles away down in the middle of town over by the High School. It’s been there since the 1950’s. There used to be a few more around here, since shut down.
Bob On Nov 24, 2013, at 8:10 PM, Bill Dailey <docdai...@gmail.com> wrote: > I am a chemical engineer and am quite frankly appalled that this kind of > high pressure process would be done in such proximity to innocents. > > > On Sun, Nov 24, 2013 at 6:53 PM, Bob Camp <li...@rtty.us> wrote: > >> Hi >> >> NDK has multiple plants growing quartz around the world. They also have a >> number of competitors in that business. There are better places than NDK to >> buy high end bars. >> >> Bob >> >> On Nov 24, 2013, at 7:00 PM, Bill Hawkins <b...@iaxs.net> wrote: >> >>> This is not as far from time-nutty things as it might appear. >>> >>> NDK makes precision crystal oscillators from those crystals. One of them >>> is an OCXO less than an inch (20 mm) square and half that high with >>> stability of 3x10E-9 over the range of -40 to 85 C. Annual drift is >>> typically 50x10E-9. The data sheet is at: >>> http://www.ndk.com/en/news/2013/1190702_1616.pdf >>> >>> The CSB released an impressive video of the incident last month. It is >>> in the final report at: >>> http://www.csb.gov/ndk-crystal-inc-explosion-with-offsite-fatality-/ >>> >>> The financial forecast for NDK shows 50 to 60% drop in profits for the >>> same sales in 2013. If that was also true in 2009, management was >>> motivated to maximize production with what they had. The original >>> consultant strongly recommended inspections for stress corrosion >>> cracking, but strong recommendations do not have financial penalties. It >>> has become obvious that money is the only thing that matters at the >>> management level these days. >>> >>> Oh, and don't bother trying to Google for "pure quartz crystals" to find >>> out whether the cost went up in 2010 after one of the two manufacturers >>> in the US was shut down. The people whose magical thinking extends to >>> crystals want purity, so all crystals are "pure." >>> >>> Help prevent incomplete knowledge. >>> >>> Bill Hawkins >>> >>> >>> -----Original Message----- >>> From: Robert Atkinson >>> Sent: Sunday, November 24, 2013 1:43 AM >>> >>> The US Chemical Safety Board have released their report into the 2009 >>> accident at NDK's synthetic crystal growing facility in Belvidere IL < >>> http://www.csb.gov/assets/1/19/CSB_CaseStudy_NDK_1107_500PM.pdf > It >>> also describes the process. >>> >>> Basically a 50ft autoclave failed, killing a member of the public at a >>> rest stop 650ft away. Looks like management decisions, probably based on >>> cost, overriding engineering advice even following an earlier minor >>> incident. The letters from a consulting engineer in the annex make >>> interesting reading. It illustrates the importance of those professional >>> engineers amongst us notifying and recording any safety issues we >>> discover. The facility is still shut down and the insurance company >>> won't settle as NDK were told of possible issues. >>> >>> Robert G8RPI. >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > > -- > Doc > > Bill Dailey > KXØO > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.