ML20211D071

Proposed Tech Spec 3/4.6.3.1.2,allowing stroke-testing of Selected Containment Isolation Valves in Operating Modes Other than Cold Shutdown or Refueling.Certificate of Svc Encl

ML20211D071
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	10/17/1986
From:	PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML20211D046	List: ML20211D043 ML20211D056 ML20211D071
References
TAC-63445, NUDOCS 8610220094
Download: ML20211D071 (4)

Text

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LCA 144 Page 1 of 2 DESCRIPTION OF CHANGE Trojan Technical Specification (TTS) 4.6.3.3.2 provides surveillance requirements for Containment isolation valve testing. This change revises this TTS to allow Containment isolation valve testing during any MODE rather than only MODES S or 6.

REASON FOR CHANGE TTS 4.6.3.1.2 requires that Containment isolation valves be stroke-tested during only MODES S or 6. However, selected isolation valves can be tested in other MODES to satisfy this surveillance requirement. An example is valve MO-8105. This is a Containment isolation valve which also functions as an ECCS valve to isolate charging to the RCS. Per TTS 4.5.2.e.1, this valve is stroke-tested once every 18 months.

'This testing is typically performed during MODE 4 in accordance with Periodic Operating Test 25-2b, " Safeguards Test Panel Actuating Test", as part of ECCS valve testing. This testing also satisfies the requirements of TTS 4.6.3.1.2, but since it is performed.in MODE 4, does not meet the prescriptive requirements of this TTS because it is not performed in MODES S or 6. To avoid performing this stroke-testing twice, but in different MODES, the change shown in Attachment A is proposed.

SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION I This change does not involve a significant increase in the probability or consequences of an accident. No change is proposed in the test frequency or the valves to be tested. This change merely gives credit for testing performed in MODES other than 5 or 6 for satisfying TTS 4.6.3.1.2.

This change does not create a new or different kind of accident.

• Stroke-testing of Containment isolation valves is not relevant to accident creation since the Containment isolation valves are designed to mitigate the consequences of an accident after it has occurred.

Valves which have both a containment isolation function and a process function are tested only in MODES which do not adversely affect the j

functioning of the system. No change is proposed to the design of the Plant.

This change does not involve a significant reduction in a margin of safety because this is an administrative change designed to achieve

, consistency throughout the TTS. This change proposes that stroke-testing still be performed in the same manner as is currently done. The accep-tance criteria for this testing remains unchanged. The proposed change j slmply allows greater flexibility in the scheduling of this testing and eliminates duplicate testing.

8610220094 861017 PDR P

ADOCK 05000344 PDR u

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et LCA 144 Page 2 of 2 In the April 6, 1983 Federal Register, the NRC published a list of examples of amendments that are not likely to involvo a significant hazards consideration. Example No. 1 of that list applies to the change proposed herein and states:

"A purely administrative change to technical specifications, eg, a change to achieve consistency throughout the technical specifications, correction of an error, or a change in nomenclature."

Based on the above evaluation, the proposed change is deemed not to pose a significant hazard.

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LCA 144 e' Attachment A Page 1 of 1 CONTAINMENT SYSTEMS 3/4.6.3 CONTAINMENT ISOLATION VALVES LIMITING CONDITION FOR OPERATION 3.6.3.1 The containment isolation valves specified in Table 3.6-1 shall be OPERABLE with isolation times as shown in Table 3.6-1.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With one or more of the isolation valve (s) specified in Table 3.6-1 inoperable, either:

a. Restore the inoperable valve (s) to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, or

b. Isolate each affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at least one deactivated automatic valve secured in the isolation position, or

c. Isolate each affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at least one closed manual valve or blind flange; or

d. Be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.3.1.1 The isolation valves specified in Table 3.6-1 shall be demon-strated OPERABLE prior to returning the valve to service af ter maintenance, repair or replacement work is performed on the valve or its associated actuator, control or power circuit by performance of a cycling test and verification of isolation time.

4.6.3.1.2 Each isolation valve specified in Table 3.6-1 shall be demon-strated OPERABLE at least once per 18 months by:

a. Verifying that on a containment isolation test signal, each isolation valve actuates to its isolation position.

TROJAN-UNIT 1 3/4 6-15 Amendment No. 74 June 10,1982 s - -

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the hatter of )

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PORTLAND CENERAL ELECTRIC COMPANY, ) Docket 50-344 THE CITY OF EUCENE, OREGON, AND ) Operating License NPF-1 PACIFIC POWEP. & LIGHT COMPANY )

)

(TROJAN NUCLEAR PLANT) )

CERTIFICATE OF SERVICE I hereby certify that copies of License Change Application 144 to the Operating License for Trojan Nuclear Plant, dated October 17, 1986, have been served on the following by hand delivery or by deposit in the United States mail, first class, this 17th day of October 1986:

Mr. Lynn Frank, Director State of Oregon Department of Energy 625 Marion St NE Salem OR 97310 Mr. Michael J. Sykes Chairman of County Commissioners Columbia County Courthouse St. IIelens OR 97051 k"

G. A. Zimmerman, Manager Nuclear Regulation Branch Nuclear Safety & Regulation Subscribed and sworn to before me this 17th day of October 1986.

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. 1 Notary Pubdic"of dregon My Commission Lxpires:  !'A

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