ML19332B103
| ML19332B103 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 09/04/1980 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009250489 | |
| Download: ML19332B103 (2) | |
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UNITED STATES
'g NUCLEAR REGULATORY COMMISSION 3
REGloN lli E
f 799 ROOSEVELT RO Ao 8
GLEN ELLYN,ILLWOIS 60W SEP - 4 1980 Docket No. 50-373 Docket No. 50-374 Commonwealth Edison Company ATTN:
Mr. Cordell Reed Vice President P. O. Box 767 4 Chicago, IL 60690 Gentlemen:
This refers to the telephone conversation between Messrs. W. Shewski and L. Burke of your organization and Messrs. C. Williams and J. Neisler
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of our staff on September 2, 1980, regarding potentially deficient fire l
stop material manufactured by Tech-Sil Inc.
Based on the results of our continuing investigation of allegations involving Tech-Sil Inc., your contractor at LaSalle County Station Units 1 and 2, we have determined that some of their products are not in conformance with project and NRC requirements.
The following findings were made:
1.
The leaded elastomer seal material was tested for fire resistance in accordance with ASTM E-119 Appendix A, entitled "Three Hour Fire Barrier." Subsequent to the fire tests, the formula for the sealant was changed on January 2, 1979, on June 5, 1979, and again on September 10, 1979. Fire tests were not conducted on the leaded elastomer seal material after any of these formula changes.
2.
liigh density silicone gel seal material was tested in accordance with ASTM E-119 on March 24, 1980.
The formula for the gel material was subsequently changed.
Fire tests were not conducted on the gel after the formula changes.
3.
Certificates of conformance on the materials shipped to the site do not indicate that changes have been made in material formula since the fire tests were performed.
Consequently, nonconforming condi-tions apparently exist in var!aus locations where this material was used, in that required fire tests were not performed.
Based on the above we understand that you.will discontinue with installa-tion of leaded elastomer and high density silicone gel penetration seals until the following actions have been completed.
t 80 00:2goyrt p
4~~4 SEP - 4 050 Commonwealth Edison Company.
a.
Comprehensive audits are conducted of Tech-Sil in accordance j
with established project and quality assurance criteria to determine the adequacy of Tech-Sil's design and product control. The audit will include that determination of the validity of Tech-Sil Certificates of Conformance.
b.
Establish or verify that each lot of material used in pene-trations at LaSalle County Station Units 1 and 2 meets the fire resistance requirements as stated in the SAR or remove thema{erialinquestion.
c.
Identify and report to us the circumstances which apparently precluded your discovery of these conditions and include in your written report such corrective actions as are necessary in regard to your QA program and technical management of these activities.
If our understanding of your planned actions as described above is not in accordance with the actual plans and actions being implemented, please contact this office immediately.
Sincerely, O.
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,i James G. Keppler Director cc:
Mr. J. S. Abel, Director of Nuclear Licensing Mr. L. J. Burke, Site Construction Superintendent 1
Mr. T. E. Quaka, Quality Assurance Supervisor Mr. R. H. Holyoak, Station Superintendent Mr. B. B. Stephenson, Project Manager Central Files Reproduction Unit NRC 20b AE0D Resident Inspector, RIII PDR Local PDR NSIC TIC
!l Mr. Dean Hansell, Office of lj Assistant Attorney General
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