View source for TXX-6828, Supplemental Deficiency Rept CP-85-13 Re Failures Existing in Esfas.Initially Reported on 850415.Rev of Test Procedures Not Required Due to Deficiency Resolved by Westinghouse Submittal of Hardware Mods.Circuit Installation Completed

{{Adams
| number = ML20236N299
| issue date = 11/10/1987
| title = Supplemental Deficiency Rept CP-85-13 Re Failures Existing in Esfas.Initially Reported on 850415.Rev of Test Procedures Not Required Due to Deficiency Resolved by Westinghouse Submittal of Hardware Mods.Circuit Installation Completed
| 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-85-13, TXX-6828, NUDOCS 8711160107
| document type = DEFICIENCY REPORTS (PER 10CFR50.55E &amp; PART 21), TEXT-SAFETY REPORT
| page count = 2
}}

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h                                                             It#ELECTR/C                    Ref. # 10CFR50.55(e)             -
l wn w c. counsa                                                                 November 10, 1987                  l Encutive Vice Pn'si&nt I
r '               V. S. Nuclear Regulatory Commission Attn: Document Control Desk
(                Washington, D. C. 20555

==SUBJECT:==
 ' COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET N05. 50-445 AND 50-446
, .                               UNDETECTABLE FAILURE IN ENGINEERED SAFETY FEATURES ACTUATION SYSTEM
                                 .SDAR CP-85-13 (SUPPLEMENTAL REPORT)                                                           i Gentlemen:                                                                                                     '
On April 15', 1985, in our report logged TXX-4457, we notified you of a deficiency regarding failures existing in our Engineered Safety Features                                      i Actuation Systems (ESFAS) which we deeined reportable under the provisions of                                 1 10CFR50.55(e). This item was subsequently identified by our last report                                       l logged TXX-6435,' dated May 13, 1987, as an item for which a finhl report had                                 I been issued but the corrective actions required revision. This report is                                      l submitted to status the implementation of those corrective actions.                                           1 In our report TXX-4457, we indicated our corrective actions would involve a
               . revision to our test procedures to incorporate the CPSES specific testing requirements' recommended by Westinghouse.                Since that report, this deficiency has been resolved by Westinghouse's submittal of hardware modifications (Field.
Changes.TBM-10639 and TCXM-10601) which have been implemented by Design Modification DM-86-013 and Design Change Authorization 23881 for Units 1 and 2 respectively. The modification consists of a new switch and meter arrangement that provides correct results under all test conditions.                            The installation of the new circuit has been completed.
              ' Ode to the implementation of these hardware modifications, revision of the r               test procedures as described in TXX-4457 is no longer required.                                               l 1
8711160307 871110 PDR S
ADOCK 05000445 PDR
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