ML20197D646

Proposed Tech Specs Table Revising Lift Setting Tolerance for Main Steam Line Safety Valves

ML20197D646
Person / Time
Site:	Callaway
Issue date:	12/16/1997
From:	UNION ELECTRIC CO.
To:
Shared Package
ML20197D642	List: ML20197D646 ULNRC-03696, Forwards Responses to NRC 971113 RAI Re Licensee 970808 Application for Amend to TS Table 3.7-2 to Specify That Lift Valves Be Changed to +3/-1% as-found.Marked-up STS Pages Encl
References
NUDOCS 9712290096
Download: ML20197D646 (2)

Text

'

kgerJun+ ;- b kW # 0" HSSys 3.7.1 l p pg ,,p y Table 3.7.12 (page 1 of 1)

Main Steam Safety Valve lift Settings LIFT SETTING VALVE NlkEER 'pi, i ly ffsty +Y-l%, ac hanbh STEAM GENERATOR (p r,3 f I %

• f /dd)

1. 1 #2 #3 #4 ABV0055 ABV0065 ABV0075 ABV0045 1185 ABV0066 ABV0076 ABV0046 1197 ABV0056 ABV0057 ABV0067 ABV0077 A5V0047 1210 ABV0058 ABV0068 ABV0078 ABV0048 1222 ,

ABV0059 ABV0069 ABV0079 ABV0049 1234 9712290096 971216 gDR ADOCK 05000483 PDR CALLAWAY PLANT ITS 3.7 4 5/15/97 l l

Mdd 2. 4 A4^/# b # # #

HSSVs 06#

l

.- ### E B 3.7.1 i

~ BASES ACTIONS B.1 and B.2 (continued)

If THERHAL POWER or the Power Range Neutron Flux High trip setpoints is not reduced within the associated Completion Time, or if one or more steam generators have less than two MSSVs OPERABLE, the unit must be pinced in a H00E in which the LC0 does not apply. To achieve this status, the unit must be placed in at least H00E 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in HODE 4 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

SURVEILLANCE SR 3.7.1.1 REQUIREMENTS This SR verifies the OPERABILITY of the HSSVs by the verification of each MSSV lift setpoint in accordance with the Inservice Testing Program (P.ef. 5).

+3l-l %

The ASME Code specifies the activf. ties and frequencies necessary

/tt4A*Ve rj Or v,/re.r to satisfy the requirements. Table 3.7.1 2 allows a setpoint tolerance for OPERABILITY The lift settings, acco.-ding M f*Sef 4 / 7, to Table 3.7.12, correspond to a ent conditions of tne valve Mcw.g A fme,gm t nominal operating temperature pressure.

d This SR is modified by a Note that allows entry into and operation in MODE 3 prior to performing the SR The MSSVs may be either vench tested or tested in situ at hot conditions using an assist device to simulate lift pressure. If the MSSVs are not tested at hot conditions, the lift setting pressure shall be corrected, if necessary, to ambient conditions of the valve at operating temperature and pressure.

REFERENCES 1. FSAR, Section 10.3.2, Main Steam Supply System System Description.

2. ASME. Boiler and Pressure Vessel Code,Section III.

Article NC 7000. Class 2 Components.

3. FSAR, Section 15.2, Decrease in Heat Removal by the Secondary System.

(continued)

CALLAWAY PLANT ITS GASES B 3.7 4 5/15/97

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