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00436
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TEM and TPS CCAs |
GT104 thru GT122 |
General Technology provide the following information
regarding their current stock of Arathane 5750 A/B :
ARATHANE 5750-A
BATCH # AK4GX8033A, 140 GRAM BOTTLES, UNOPENED, FOUR (4) EACH
ARATHANE 5750-B(LV)
BATCH# AK4GB8013A, 780 GRAM CONTAINERS, UNOPENED, FOUR (4) EACH
Per e-mail correspondence with Fred Gross (GSFC M&P Engineering), direct GT
to cure sample of current batch of Arathane 5750 to verify proper cure of
material. SLAC to provide GSFC with waiver request to use current stock of
Arathane. Based on acceptable results of sample cure test (per Fred Gross) a
three month extension to shelf life will be granted for current stock of
Arathane 5750.
Schedule impact forces need to use current stock of Arathane conformal
coating. Promise delivery date for new supply to GT was 14 April, but
slipped to mid-May. TEM and TPS CCAs that have completed pre-conformal coat
testing need to be coated to complete TEM/TPS assembly.
Report results of cure test to this NCR.
Dispo #2 (cullinan, 4-22-05) GTC sprayed both sides of two pieces of an
unidentified fiberglass-epoxy circuit board material with Arathane 5750 to
1.5 mils thick. The two samples of Arathane 5750 were cured by GTC following
cure cycle used for actual TEM adn TPS flight CCAs. GTC reported full cure
with no tackiness following visual inspection. Samples were forwarded to
SLAC for evaluation. Visual inspection of samples by LAT QA shows no
tackiness, no bubbles, excellent adhesion, uniform color and even flow of
sprayed material.
LAT QA to forward Material Usage Agreement (MUA) #003 to GSFC per direction
of Fred Gross to extend shelf life of current stock of Arathane 5750 A/B for
3 months from original expiration date.
This disposition authorizes GTC to use current stock of Arethane 5750 on TEM
and TPS flight CCAs:
ARATHANE 5750-A
BATCH # AK4GX8033A, 140 GRAM BOTTLES, UNOPENED, FOUR (4) EACH
ARATHANE 5750-B(LV)
BATCH# AK4GB8013A, 780 GRAM CONTAINERS, UNOPENED, FOUR (4) EACH
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None required at this time. New Arathane shipment expected
mid-May. |
IS: Arathane 5750 A/B used by vendor (General
Technologies) to conformal coat TEM and TPS CCAs has shelf life that expired
on 3 April 2005
S.B.: Shelf life not expired
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