View source for TXX-6922, Supplemental Deficiency Rept CP-82-09 Re Solid State Protection Sys Undetectable Failure.Initially Reported on 821130.Test Procedures Revised to Incorporate facility-specific Requirements Recommended by Westinghouse

{{Adams
| number = ML20236N620
| issue date = 11/10/1987
| title = Supplemental Deficiency Rept CP-82-09 Re Solid State Protection Sys Undetectable Failure.Initially Reported on 821130.Test Procedures Revised to Incorporate facility-specific Requirements Recommended by Westinghouse
| author name = Counsil W, Marshall J
| author affiliation = TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
| addressee name = 
| addressee affiliation = NRC OFFICE OF ADMINISTRATION &amp; RESOURCES MANAGEMENT (ARM)
| docket = 05000445, 05000446
| license number = 
| contact person = 
| document report number = CP-82-09, CP-82-9, TXX-6922, NUDOCS 8711160253
| document type = DEFICIENCY REPORTS (PER 10CFR50.55E &amp; PART 21), TEXT-SAFETY REPORT
| page count = 2
}}

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==SUBJECT:==
CONANCHE' PEAK STEAM ELECTRIC STATION (CPSES)                                                                   i DOCKET NOS. 50-445'AND,50-446 l
SOLID' STATE'0ETECTION S'rSTEM UNDETECTABLE FAILURE                                                            I SDAR: CP-82-09 (SUPPLEMENTAL REPORT)                                                                            !
i Gen tlemen:
On November 30, 1982, in our report logged TXX-3595, we notified you'of a
                             ' deficiency involving Solid State Protection System (SSPS). undetectable fallure twhich'we. deemed reportable under the provisions of 10CFR50.55(e). This issue.                                                 l was' subsequent 1y' identified by our report logged TXX-6435, dated May 13, 19873 as an item for which a final report had been issued but, the corrective
                             , actions. required revislon. This report is submitted to status the implementation'of.those. corrective actions.
In'.our. report TXX-3595, we indicated our corrective actions would involve a                                               a revision to our test procedures to' incorporate the CPSES specific testing                                                  ~!
                             . requirements recommended by Westinghouse. Since that report, Westinghouse has
                                . submitted : instructions to modify the 'SSPS master relay . test panel .to provide                                           j positive' detection of're-establishment'of the slave relay coil circuits after                                              j testing. These instructions were transmitted via field Chenge Notices TBXM-                                                 1 10605A and TCXM-10578 and were implemented via Design Change Authorizations 18348 (Unit'1) and 19853 (Unit 2). Rework for Unit 1 and Unit 2 was completed                                                 <
on August 16, 1983, and June 26, 1987 respectively.                                                                            1
                             ..Due.to the implementation of these hardware modifications, revision of our test procedures as described in TXX-3595 is no longer required, l
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9711160253 871110 PDR   ADOCK 05000445                                                                                       !
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    'C Txx-6922 November 10, 198)
Page 2 of 2 This concludes our evaluation and corrective action.for this issue.
Suoporting documentation is available for your inspectors to review at the CPSES site.
Very_truly.yours, I h. (.ou. n sc.Y
_                                                                                                                            W. G. Counsil
       ,   'i-                                                                                                              .. [     I gyb,J.S. Marshall Supervisor, Generic Licensing     -l CBC/gj
                                                               -c                .Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) i i
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