RFD 20-1006093125 MIL-PRF-32432 Adhesion Test_signed.pdf
Performance Specification PDF 114 KB Posted
- Attached to
- Authorized Protective Eyewear List
- Solicitation number
- W15P7T
About this file
This document is an engineering change request (ECR) proposing a deviation to the adhesion test requirement in MIL-PRF-32432A. The ECR seeks to change the requirement for the test tape used from an adhesion rating of 40 ounces per 2.5 centimeters of width to 45 ounces per 1 inch of width. This 12.5% increase in the strength requirement for the tape is necessary because the current supplier of 40 ounce tape has discontinued that product and test laboratories are unable to find an acceptable alternative. The deviation is approved by PM SPE until MIL-PRF-32432 Rev B is released in September 2021, allowing test labs to accurately test to the new requirement while establishing a more robust standard.
The related federal contract opportunity is a pre-solicitation for the Authorized Protective Eyewear List managed by the Department of the Army Materiel Command Army Contracting Command Aberdeen Proving Ground. The opportunity appears to relate to the products tested to the standard addressed in the engineering change request.
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PM SPE ENGINEERING CHANGE REQUEST (ECR)
(Vendors – Complete Blocks 2 – 19 and Submit to PM SPE)
1. PM SPE CONTROL NUMBER
2. ORIGINATOR 3. ECR TYPE
a. TYPED NAME (First, Middle Initial, Last)
b. ADDRESS (Street, City, State, Zip Code)
RFD
RFW
4. CLASSIFICATION
5. TITLE OF ECR
6. ITEM DESIGNATION 7. PROCUREMENT ACTIVITY
8. BASELINE AFFECTED
a. MCN / NSN b. MODEL / DESIGN CODE
9. END ITEM NOMENCLATURE 10. CONTRACT NUMBER AND LINE ITEM
11. LOTS / MATERIAL AFFECTED
12. REOCCURING DEVIATION (if Yes, Provide CAR# in Block 12 & Status in Block 18)
13. EFFECT ON COST / PRICE
14. EFFECT ON DELIVERY SCHEDULE
15. OTHER SYSTEMS / CONFIGURATION ITEMS / INTERFACES AFFECTED
16. DESCRIPTION OF ECR
17. NEED FOR ECR
18. CORRECTIVE ACTION TAKEN
19. SUBMITTING ACTIVITY
a. TYPED NAME (FIRST, MIDDLE INITIAL, LAST)
c. SIGNATURE
b. TITLE / ORGANIZATION
d. DATE (YYYYMMDD)
PM SPE FORM 1 (ECR), JULY 15 Page 1
RFD 20-1006093125
Timothy M. Horne 10170 Beach Road, Bldg 328T Fort Belvoir, VA 22025
MIL-PRF-32432A Adhesion Test Update
All All N/A ✔
All APEL Approved Products N/A
All lots and end items No
No. RFD affects testing of product No. RFD affects testing of product
None.
Document deviation from Paragraph 4.13.4 Adhesion of MIL-PRF-32432A requirement to use test tape with an adhesion rating of 40 ounces per 1 inch of width.
Test labs have reported a scarcity of tape that can meet the 40oz requirement and the last known source of tape has been discontinued.
Change the requirement of MIL-PRF-32432A, 4.13.4 to read: "A test tape, with an adhesion rating of 45 ounces per 1 inch of width, shall be firmly applied to the front surface of the lens and the back surface of the lens."
Timothy M. Horne
MCEP Product Engineer/ PM SPE
HORNE.TIMOTHY.MAR
TIN.1528909465
Digitally signed by
HORNE.TIMOTHY.MARTIN.1528909465
Date: 2020.10.06 13:02:35 -04'00'
20200916
PM SPE CONTROL NUMBER
TITLE OF ECR
20. PM SPE JUSTIFICATION
21. ATTACHMENTS
22. COR (APPROVAL AUTHORITY FOR MINOR ECRS) / PM SPE TECHNICAL STAFF APPROVAL / DISAPPROVAL FOR MAJOR OR CRITICAL ECRS)
a. APPROVAL
b. SIGNATURE
c. DATE SIGNED
(YYYYMMDD)
23. APM APPROVAL / DISAPPROVAL (APPROVAL AUTHORITY FOR MAJOR ECRs)
24. PM SPE APPROVAL / DISAPPROVAL (APPROVAL AUTHORITY FOR CRITICAL ECRs)
PM SPE FORM 1 (ECR), JULY 15 Page 2
MIL-PRF-32432A Adhesion Test Update
In accordance with paragraph 4.13.4. of MIL-PRF-32432A; A test tape, with an adhesion rating of 40 ounces per 2.5 centimeters of width, shall be firmly applied to the front surface of the lens and the back surface of the lens.
Historically third party test laboratories have reported a difficulty finding a tape that meets the 40oz requirement. Labs found that Grainger made a paper masking tape that met the requirement. Recently Grainger has discontinued their 40oz tape and the current supply that the labs have is expiring. Labs reported not being able to find another supplier for 40oz tape, however Grainger recommended the closest substitute product to be 45 ounces per 1 inch rated tape, an 12.5% strength requirement increase.
1 inch tape versus 2.5 centimeter tape has a width difference of 0.04cm or a 1.57% increase in width. We determined that this width difference is negligible.
Upon surveying vendors currently on the APEL, none have reported any issues with the update to the tape rating. Most vendors reported testing with a higher rated tape during in-house testing.
PM SPE approves the deviation to MIL-PRF-32432 Rev A until the requirement is updated in MIL-PRF-32432 Rev B to be released September 2021. This allows test labs to accurately test to the new requirement while also providing a more robust requirement.
None
✔ MILLER.KYLE.H.11063
85943
Digitally signed by
MILLER.KYLE.H.1106385943
Date: 2020.10.07 10:09:55 -04'00'
QUERIM.DAVID.M.122
8594756
Digitally signed by
QUERIM.DAVID.M.1228594756
Date: 2020.10.07 09:16:35 -04'00' 20201007
20201007
PM SPE CONTROL NUMBER
TITLE OF ECR
PM SPE FORM 1 (ECR), JULY 15 Page 3
MIL-PRF-32432A Adhesion Test Update
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