ML20083A002

Proposed Tech Specs,Revising LCO 3.4.2.2 & Table 3.7-2 of TS by Relaxing Lift Setting Tolerance of Pressurizer Safety Valves from +1% to +2% & MSSV from +1% to +3%

ML20083A002
Person / Time
Site:	South Texas
Issue date:	05/02/1995
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20083A000	List: ML20083A002 ST-HL-AE-5077, Application for Amend to Licenses NPF-76 & NPF-80,revising LCO 3.4.2.2 & Table 3.7-2 of TSs by Relaxing Lift Setting Tolerance of Pressurizer Safety Valves from +1% to +2% & MSSV from +1% to +3%
References
NUDOCS 9505090239
Download: ML20083A002 (3)

Text

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ATTACHMENT 3 MARKED UP PAGES FOR PROPOSED CHANGES TO TECHNICAL SPECIFICATIONS m,,,,..,

9505090239 950502 PDR ADOCK 05000498 P PDR

A ST-IIL-AE-5077 Attaclunent 3 Page 1 of 2 REACTOR COOLANT SYSTEM

- OPERATING  !

LIMITING CONDITION FOR OPERATION 3.4.2.2 All precurizer Code safety valves shall be OPERABLE with a lift setting' of 2485 psig i + 2 %.* 8 APPLICABILITY: MODES 1,2 and 3.

A_CTION:

With one pressurizer Code safety valve inoperable, either restore the inoperable valve to OPERABLE

. status within I hour or be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SIIUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.4.2.2 No additional requirements other than those required by Specification 4.0.5.

The lift setting pressure shall correspond to ambient conditior,s of the valve at nominal naerating ,

temperature and pressure.

2 The as'left lift setting shall be within '1% following valve testing; l

i SOUTil TEXAS - UNITS I & 2 3/44-8 Unit 1 - Amendment No. 59 Unit 2 - Amendment No. 47 l

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ST-HL-AE-5077 Attachment 3 .!

Page 2 of 2 i

TABLE 3.7-2 -

STEAM LINE SAFETY VALVES PER LOOP VAI,VE NUMBER LIFT SETTING :1 (i 4- 3% ?? ORlFICE SIZE I.OOP A LOOPB LOOP C LOOP D

1. PSV-7410 PSV-7420 PSV-7430 PSV-7440 1285 psig 16 in.2

- 2. PSV-7410A PSV-7420A PSV-7430A PSV-7440A 1285 psig - 16 in.2 ,

3. PSV-7410B PSV-7420B PSV-7430B PSV-7440B 1305 psig 16 in.2

4. PSV-7410C PSV-7420C PSV-7430C PSV-7440C 1315 psig 16 in.2 -

5. PSV-7410D PSV-7420D PSV-7430D PSV-7440D 1325 psig 16 in.2 l

'I M The litt setting pressure shall correspond to ambient conditions of the valve at nominal operating temperature and pressure.

• The as left , lift settigshall be;within11% followingyalvs;tesfmp; l l

SOUTil TEXAS'- UNITS 1 & 2 3/47-3  ;

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