REG NASA-LLIS-0536-1996 Lessons Learned - Clean Room Certified Adhesive Tapes Silicone vs Acrylic.pdf

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1、Lessons Learned Entry: 0536Lesson Info:a71 Lesson Number: 0536a71 Lesson Date: 1996-05-01a71 Submitting Organization: LARCa71 Submitted by: Ruth M. AmundsenSubject: Clean Room Certified Adhesive Tapes: Silicone vs. Acrylic Description of Driving Event: Clean room certified adhesive tape 5413 was use

2、d inadvertently in construction of multi-layer insulation (MLI) blanket for a vacuum chamber (instead of clean room certified adhesive tape 1205). The two tapes look virtually identical and are packaged similarly.Lesson(s) Learned: Clean room certified adhesive tape 5413 looks just the same as clean

3、 room certified adhesive tape 1205, but 5413 contains a silicone-based adhesive that is not compatible with vacuum work. 1205 has an acrylic adhesive that can be baked to reduce outgassing.Recommendation(s): Carefully evaluate proper tape to use for each situation, and take steps to ensure that inco

4、rrect tape cannot be used.Evidence of Recurrence Control Effectiveness: Clean room certified adhesive tape 1205 used for MLI; bakeout and pumpdown times much reduced.Documents Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without l

5、icense from IHS-,-,-N/AAdditional Key Phrase(s): a71 Parts Materials & ProcessesAdditional Info: Approval Info: a71 Approval Date: 1997-05-03a71 Approval Name: Elijah C. Kenta71 Approval Organization: 421a71 Approval Phone Number: 757-864-3345Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-