ML20080Q330

Forwards Rev 17 to CPSES Technical Requirements Manual

ML20080Q330
Person / Time
Site:	Comanche Peak
Issue date:	03/02/1995
From:	John Marshall, Terry C TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20080Q333	List: ML20080Q330 ML20080Q335
References
TXX-95062, NUDOCS 9503080322
Download: ML20080Q330 (5)

Text

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= Log # TXX 95062 File # 10010

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= .-- 916 (TRM) i r = Ref. # 10CFR50.36 l 1UELECTRIC c, w y, March 2, 1995 ow vw-w.w.u-wr U. S. Nuclear Regulatory Commission Attn: Document Control Room Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) l DOCKET NOS. 50-445 AND 50 446 l TRANSMITTAL OF TECHNICAL REQUIREMENTS MANUAL (TRM)

REVISION 17 Gentlemen:

TU Electric herewith submits Revision 17 (enclosed) of the CPSES Technical Requirements Manual (TRM). Enclosed are the following documents:

Technical Requirements Manual 1 signed original Revision 17 and 10 copies j The attachment contains a page by-page description of the changes. As has been the TU Electric practice in the past several TRM revisions, all changes described in the attachment have been evaluated for relative significance-(i.e., the group number 1, 2, 3, or 4 corresponds to each change justification as discussed in TV Electric letter TXX 88467 dated June 1. 1988). In addition, all changes applicable to CPSES Units 1 and 2  ;

have been reviewed under the TU Electric 10CFR50.59 process and found not to I include any "unreviewed safety questions". l TRM Revision 17, dated February 24, 1995, was approved and became effective on February 24, 1995.

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TXX 95062 Page 2 of 2 l

If you should have any questions, please contact Mr. Carl B. Corbin at I (214) 812-8859.  !

Sincerely, C. L. Terry By:

J. S. Marshall l Generic Licensing Manager l CBC/cbc Attachment Enclosure cc: Mr. L. J. Callan, Region IV Hr. D. D. Chamberlain Region IV l Mr. T. J. Polich. NRR l Resident Inspectors I

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Attachment to TXX-95062 March 1, 1995 Page 1 of 2 l CPSES - TECHNICAL REQUIREMENTS MANUAL (TRM)

! AMENDMENT / REVISION 17.

DETAILED DESCRIPTION TR Page

- (as amended) Group Description i

2-29 2 See Sheet No(s) 22-30, 2-31, 2-32, and 2-33

Relocates the specific test acceptance criteria and i flow path for the containment Spray pumps from TS

. Surveillance Requirement 4.6.2.lb to new Section 2.2 5 in the TRM.

3 Addition-  :

High vibration in the Unit 2 Containment 4 Spray System piping in the vicinity of the

, pumps has resulted in fatigue cracks at connections of small bore piping.to the discharge headers. This. condition was i reported to the NRC via LER 2-94-005

transmitted by TU Electric letter TXX-94166, 1 dated June 22, 1994. A number of approaches j were employed as corrective actions, i including reinforcement of-the connecting piping,. deletion of unnecessary piping l

, connections, and replacement of the containment spray pump impellers with  ;

4 impellers of a different design. Similar modifications are planned for the Unit 1 Containment Spray System during the March 1995 refueling outage. The corrective

actions significantly reduced the Unit 2 j containment' Spray System vibration; however, )

4 the impeller replacement resulted in a j l reduction of 2 to 6 paid in each containment  !

a spray pump discharge head. While all the ]

j Unit 2 pumps had sufficient margin to meet i i the Surveillance Requirement 4.6.2.lb.

i minimum of 245 psid, it was recognized that  !

this might not be the case for Unit 1. The I discharge head of one of the Unit 1 Containment Spray. pumps historically has been only a few psid above the surveillance limit. The impeller replacement in this

] pump.could potentially reduce its head below j the surveillance limit. -In addition, the

. pump head value provided in the surveillance-requirement is. greater than the actual developed head necessary to satisfy the

safety analyses.

In order to address this potential

~

compliance problem, TU Electric submitted a License Amendment Request (LAR 95-01) to replace the existing surveillance requirement with the corresponding surveillance requirement from

, NUREG-1431. The NUREG-1431 version i i-e*- - - < y --

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Attachment to TXX-95062 March 1, 1995 Page 2 of 2 i

TR Page (as amended) Group Description stipulates that the pumps meet the " required developed head at'the flow test point" but does not specify a minimum head or flow.

The required developed head and flow test point will be relocated to the CPSES Technical Requirements Manual (TRM) and will be established to ensure that the appropriate safety analyses are satisfied.

Changes to the CPSES TRM are controlled.

under 10CFR50.59, Technical Specification 6.5.1.6 (review by SORC) , . and Technical Specification 6.8.1'(procedures and programs). The surveillance frequency will not change.

Change Request Number  : TR-95-2.

Commitment Register Number :

Related SER : 6.2.2 SSER :

SER/SSER Impact  : No I

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