ST-HL-AE-3561, Proposed Changes to Tech Spec 4.0.2

Proposed Changes to Tech Spec 4.0.2

ML20059G181
Person / Time
Site:	South Texas
Issue date:	09/05/1990
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20059G179	List: ML20059G177 ST-HL-AE-3561, Proposed Changes to Tech Spec 4.0.2
References
ST-HL-AE-3561, NUDOCS 9009120182
Download: ML20059G181 (4)

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ATTACHMENT 1 ST HL AE 35 6 I ,

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ATTACHMENT 2 ,

PROPOSED CHANGE TO TECHNICAL SPECIFICATION 4.0.2 AND BASES i

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' ATTACHliEfD ST HL AE-35(,1 PAGE_ 1 0F 4 APli! CAB)il!Y SURVEILLANCE REQUIREMENTS 4.0.1 Surveillance Requirements shall be met during.the OPERATIONAL MODES.

or other conditions specified for individual Limiting Conditions for Operation unless otherwise stated 11 an individual Surveillance Requirement.

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4.0.2 Each Surveillance Requirement shall be per within the specified_sI time interval with:

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a. A maximum allowabl ension not to exceed 25% of the surveillance.

interval, but

b. Th vir.d time interval for any three consecutive surveillance ntervals shall not exceed 3.25 times the specified surveillance interval.

4.0.3 f ailure to perform a Surveillance Requirement within the allowed sur-veillance interval, defir'ed by Specification 4.0.2, shall constitute a failure to r:,eet the OPERAB]LITY requirements for a Limiting Condition for Operation.

1he time limits of the AC110H requirements are applicable at the time it is identified that a Surveillance Requirement has not ber:n performed. The AC110N requirements may be delayed for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to permit the completion of the surveillance when the allowed outage t %e limits of the ACTION requirements are less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Surveillance Requirements do not have to be performed

.i on inoperable equipment.

, 4.0.4 Entry into an OPERA 110NAL MODE or other specified condition shal's not be  !

made unless the Surveillance Requirement (s) associated with the Limiting Condi-  !

tion for Operation has been performed within the stated surveillance interval or as otherwise specified. This provision shall not prevent passage through ,

or to OPERA 110NAL MODES as required to comply with ACTION' requirements.

4. 0. 5 S v veillance Requirements for inservice inspection and testing of ASME Ccde Class 1, 2, and 3 components shall be applicable as follows:

a. inservice inspection of ASME Code Class 1, 2, and 3 components and inservice testing of ASME Code Class 1, 2,' and 3 pumps and valves shall be performed in'accoraance with Section XI of the ASME Boiler and Pressure Vessel Code ar.d appliccble Addenda as required by  ;

10 CFR Part 50, Section 50.55a(g), except where specific written  ;

relief has been granted by the Commission pursuant to 10 CFR Part 50, Section 50.55a(g)(6)(i);

50VIH lEXA5 - UN!15 1 & 2 3/4 0 3 .

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ST HL AE 556 / l PAGE 3 0F V i 3.4.0 .4 t]CABILITY l i

BASES (Continued)

When a shutdown is required to comply with AC110N requirements, the provisions t of Specification 3.0.4 do not apply because they would delay placing the t facility in a lower H0DE of operation.  :

Specification 3.0.5 delineates the applicability of each specification to -

l Unit 1 and Unit 2 operation.  !

Specifications 4.0.1 through 4.0.6 establish the general requirements  !

applicable to Surveillance Requirements. These requirements are based on the i Surveillance Requirements stated in t.he Code of Federal Regulations, 10 Cf R 50.36(c)(3):

" Surveillance requirements are requirements relating to test, calibra- -

tion, or inspection to ensure that the necessary quality of systems and [

components is maintained, that facility operation will be within safety limits, and that the limiting conditions of operation will be met."  :

Specification 4.0.1 establishes the requirement that surveillances must be performed during the OPERATJONAL MODES or other conditions for which the requirements of the Limiting Conditions for Operation. apply unless otherwise  :

stated in an individual Surveillance Requirement. The purpose of this speci-  !

fication is to ensure that surveillances are performed to verify the opera-tional status of systems and components and that parameters are within speci- ,

( fied limits to ensure safe operation of the facility when the plant is in a '

MODE or other specified condition for which the associated Limiting Conditions for Operation are applicable. Surveillance Requirements do not have to be ,

performed when the facility is in an OPERATIONAL MODE for which the requirements -

of the associated Limiting Condition for Operation do not apply unless otherwise <

specified. The Surveillance Requirements associated with a Special Test ,

Exception are only applicable when the Special Test Exception is used as an-allowableexceptiontotherequirementsofasegiga41ong

[5 ecification f 4.0.2 establishes the conditions under which the specified tim I interv61 for Surveillance Requirements may be extended. Item a. permit allowable extension of the nurmal surveillance interval to facilitate surveillance scheduling and consideration of plant operatin "

may not be suitable for conducting the surveillancveTg., transient g t^onditions that conditions or other ongoing surveillance or maintenanceactlvities. Item b. limits the use of the provisions of item a. to 3nsure'that it~ is not used repeatedly to extend the surveillance interva.),btyond that specified. The limits of Specification 4.0.2 are bja ed'on engineering judgment and the recognition that the most-probable resylt'of any particular surveillance being performed is the verification ofjonformance with the Surveillance Requirements. These provisions are sufficient"to ensure that the reliability ensured through surveillance )

activit.4c (is not significantly degraded beyond that obtained from the y '

g pcTfied surveillance interval, f Specification 4.0.3 establishes the failure to perform a Surveillance l Requirement within the allowed surveillance interval, defined by the provisions  :

of Specification 4.0.2, as a condition that constitutes a failure to meet the -

SOUTH TEXA5 - UN]l5 3 & 2 8 3/4 0-4 Unit 1 - kendment No. 4  ;

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PAGE W 0F 4 INSERT l' 4.0.2 Each Surveillance Requirement shall be performed within the specified surveillance interval vitt ( maximum allowable extension not to exceed 25 percent of the specified surveillance interval.

INSERT 2

. Snecification 4.0.2 establishes the limit.for which the-specified time1 interval for Surveillance Requirements may be extended.. It-permits _an-allowable extension of the normal surve111ance-interval.to facilitate' surveillance scheduling and consAderation of plant operating ~conditionsL that may not be suitable'for conducting the surveillance;le.g.,

transient conditions or other ongoing' surveillance or maintenance .

activities. 4 It also provides L flexibility to accommodate the length of a

- fuel cycle for surveillances performed ^at each refueling ~ outage and are specified with a-18-month s.uwe111ance interval. :It is not intended that this provision be used repeatedly as a convenience to extend

-surveillance intervals beyond that'specified for surveillances-not-performed during refueling' outages. The' limitation of Specification 4.0.2 is based on engineering judgment!and the recognition that- the most probable result of any particular surveillance being performed is verification of conformance with the Surveillance Requirements. This provision is sufficient.to ensure that reliability ensured through surveillance activities is not significantly degraded beyond that obtained from the specified surveillance intervel.-

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