View source for TXX-6042, Interim Deficiency Rept CP-86-72 Re Plant Mods Resulting from Pipe Support Reverification Program.Initially Reported on 860606.Issue Divided to Segregate Small Bore Piping & Supports from Large Bore.Next Rept Expected by 861201

{{Adams
| number = ML20211C922
| issue date = 10/15/1986
| title = Interim Deficiency Rept CP-86-72 Re Plant Mods Resulting from Pipe Support Reverification Program.Initially Reported on 860606.Issue Divided to Segregate Small Bore Piping & Supports from Large Bore.Next Rept Expected by 861201
| author name = Counsil W
| author affiliation = TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
| addressee name = Johnson E
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION IV)
| docket = 05000445, 05000446
| license number = 
| contact person = 
| document report number = CP-86-72, TXX-6042, NUDOCS 8610220054
| document type = DEFICIENCY REPORTS (PER 10CFR50.55E &amp; PART 21), TEXT-SAFETY REPORT
| page count = 3
}}

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;                                                                                                   Log # TXX-6042 File # 10110               )
903.9 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER . 439 NORT98 OLIVE STREET. I.R. 98 . DALIAs. TEXA5 7EEDI October 15, 1986
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l       DCT151986        gh Mr. Eric-H. Johnson, Director                                                 !. _                     b Division of Reactor Safety and Projects U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012

==SUBJECT:==
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446.
SMALL BORE PIPING AND SUPPORTS SDAR: CP-86-72 (INTERIM REPORT)

==Dear Mr. Johnson:==

On June 6,1986, we notified you of a reportable item involving the scope of plant modifications resulting from the project's pipe support reverification program (see TXX-4844).           This issue was being tracked under SDAR CP-86-36, Pipe Supports. We are dividing this issue into two parts to segregate small bore piping and supports from large bore piping and supports. SDAR CP-86-36 will become'"Large Bore Piping and Supports", and SDAR CP-86-72 is "Small Bore Piping and Supports".
The scope of SDAR CP-86-72 includes Unit 1 and 2 small bore (2" and under)
ASME class 2 and 3 piping and supports that are not part of large bore or class 1 stress problems which are covered in SDAR CP-86-36. Interim reports will include a tabilation by category of piping or support modifications as follows:
: 1)   Prudent. Acceptance by physical modification versus analysis. Supports in this category may be technically acceptable; however, more time and expense would be involved than that required to physically modify the support and qualify the modification.
: 2) Recent NRC and Industry recommended practice. Modifications implemented to eliminate snubbers to enhance a plant maintainability, reduce in-service inspection, and minimize worker exposure (operating plant conditions).
: 3) Adjustment. Minor modifications (such as re-torquing or shimning) implemented to meet more rigorous installation criteria contained in the resolution of the external source technical iscues.
: 4) Cumulative effects. Modifications that may be required due to the combined effect of multiple issues.
gO22OO54861015 S      ADOCK 05000445 PDR a unuswn <w rexrs arrunrs vu.ucrme anorm

TXX-6042 October 15, 1986 Page 2 of 2 The attached list shows the support modifications initiated to date. We are continuing our evaluation and anticipate submitting our next report by December 1, 1986.
Very truly yours, (7f72/
W. G. Counsil JCH/amb Attachment c - NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D.C. 20555 1
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4 TXX-6042                                                                                                                                                               l October 15, 1986 Page 1 of 1 ATTACHMENT SMALL BORE PIPE SUPPORT MODIFICATIONS Number of Mail                                                         Cateaory                                            Modifications                                          ,
1                                                   Prudent-                                                  26 Recent Industry Practice    -                              56 Adjustment                                                 33 Cumulative Effects                                         32 2                                                   Prudent                                                    4 Recent Industry Practice                                   14 Adjustment                                                 10 Cumulative Effects                                         74 i
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