40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Wed Aug 3 15:36:57 2016, Steve, Update, SUS, Ni plated magnets & epoxy ordered 
    Reply  Fri Aug 5 09:38:12 2016, Steve, Update, SUS, SOS sus wire ordered 0.0017.jpg0.0017spec.jpg
       Reply  Mon Aug 15 14:29:32 2016, Steve, Update, SUS, SOS sus wire ordered 
          Reply  Mon Aug 15 14:34:33 2016, ericq, Update, SUS, SOS sus wire ordered 
          Reply  Wed Aug 17 22:09:04 2016, rana, Update, SUS, SOS sus wire ordered 
       Reply  Thu Aug 18 15:16:09 2016, Steve, Update, SUS, SOS sus wire is in 0.0017new.jpg
          Reply  Wed Nov 30 14:53:56 2016, Steve, Update, SUS, new sus wire stored in N2 filled dessicator dessicatorC.jpgwireN2c.jpg
Message ID: 12419     Entry time: Wed Aug 17 22:09:04 2016     In reply to: 12409
Author: rana 
Type: Update 
Category: SUS 
Subject: SOS sus wire ordered 

Not really true that it passed. That's just an arbitrary margin. Best to throw away all the old wire. We have no quantitative estimate of what the real torque should be. Its just feelings.

Quote:

The wire will arrive in 1-2 weeks. It is a new production. Brad Snook of Ca Fine Wire was suprised that we are still using the 13 years old wire.  Oxidation is an issue with iron contained steel wire.

He would not give me a shelf life time on it. He recommended to check the strenght of it before usage. It passed with safety factor of 2 just recently.

In the future we'll store the new spool in oxigen free nitrogen environment..

 

ELOG V3.1.3-