TXX-6018, Interim Deficiency Rept CP-86-49 Re Effects of polar-organic Solvents on Sealants of Conax Adaptor Modules & Electrical Penetrations.Initially Reported on 860711.Affected Modules Will Be Replaced.Next Rept Anticipated by 861117
| ML20215G359 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/10/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-49, TXX-6018, NUDOCS 8610200331 | |
| Download: ML20215G359 (2) | |
Text
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i Log # TXX-6018 File # 10110 908.1 o
o TEXAS UTILITIES GENERATING COMPANY SKYWAY MWER. Me,Mmm OuvE SMEET. u. 88. DAth8. RXA5 MMI October 10, 1986 OS* JJ..UE J
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f Mr. Eric H. Johnson, Director fJ j j Division of Reactor Safety and Projects U. S. Nuclear Regulatory Commission m/
611 Ryan Plaza Drive,. Suite 1000 L
Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 CONAX ADAPT 0R MODULES AND ELECTRICAL PENETRATIONS SDAR: CP-86-49 (INTERIM REPORT)
Dear Mr. Johnson:
On July 11, 1986, we verbally notified your Mr. I. Barnes of a deficiency involving the effects of polar-organic solvents on the sealants of Conax adaptor modules and electrical penetrations. We have previously submitted interim reports logged TXX-4950 and TXX-5031, dated August 11, 1986, and September 19, 1986, respectively. We are reporting this issue under the provisions of 10CFR50.55(e) and the required information follows.
DESCRIPTION During an inspection by the supplier's field representative, damage to the sealants of the Conax adaptor modules and electrical penetrations was identified.
Evaluation by Conax has concluded the damage was caused by the direct contact of cleaning solvents on the sealant.
Evaluation of this issue has revealed that the construction coatings procedures did not provide measures for protection of the penetrations as required by installation instructions for these components. Additionally, the inspections performed by Coatings Engineering do not address protection of the penetration sealants during coating activities.
SAFETY IMPLICATIONS Damage to the sealant does not affect the electrical integrity of the penetration; however, damage to the sealant could result in a leakage path which could allow the release of radioactive material outside of containment not accounted for in the Safety Analysis Report.
861020o331 e61010 PDR ADOCK 05000445 S
PDR D
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- TXX-6018 o.
October-10, 1986 Page 2 CORRECTIVE ACTION The following corrective measures will be taken:
1.
The affected modules will be replaced.
2.
Applicable construction procedures and the Coating Engineering Verification Program will be modified to include provisions to assure solvents which affect end sealants do not come into contact with the sealants during the applications of coatings. These provisions will be revised no'later than October 24, 1986.
We anticipate submitting our next report by November 17, 1986.
Very truly yours, W. G. Counsil JCH/amb c - NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D. C.
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