DCL-04-153, Supplement to License Amendment Request 03-17, Common Stars License Amendment Implementation of WCAP-14333 and WCAP-15376, RTS and ESFAS Test Times, Completion Times, and Surveillance Test Intervals

From kanterella
(Redirected from DCL-04-153)
Jump to navigation Jump to search
Supplement to License Amendment Request 03-17, Common Stars License Amendment Implementation of WCAP-14333 and WCAP-15376, RTS and ESFAS Test Times, Completion Times, and Surveillance Test Intervals
ML043200639
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 11/05/2004
From: Oatley D
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-04-153, OL-DPR-80, OL-DPR-82, WCAP-14333, WCAP-15376
Download: ML043200639 (12)
v • d • e


Text

PacificGas and ElectricCompany David H.Catley Diablo Canyon Power Plant Vice President and PO. Box 56 General Manager Avila Beach. CA 93424 November 5, 2004 805.545A350 Fax: 805.545.4234 PG&E Letter DCL-04-153 U.S. Nuclear Regulatory Commission Attn: Document Ccntrol Desk Washington, D.C. 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Supplement to License Amendment Request 03-17.

Common STARS License Amendment Implementation of WCAP-14333 and WCAP-15376. RTS and ESFAS Test Times. Completion Times, and Surveillance Test Intervals

Dear Commissioners and Staff:

PG&E Letter DCL-04-013, "License Amendment Request 03-17, Common Stars License Amendment, Implementation of WCAP-14333 and WCAP-1 5376, RTS and ESFAS Test Times, Completion Times, and Surveillance Test Intervals," dated February 13, 2004, transmitted an application to amend Facility Operating License Nos. DPR-80 and DPR-82 for Units 1 and 2 of the Diablo Canyon Power Plant, respectively. The proposed license amendment request (LAR) would revise Technical Specification (TS) 3.3.1, Reactor Trip System (RTS) Instrumentation, TS 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, and TS 3.3.6, Containment Ventilation Isolation Instrumentation, to adopt completion time, test bypass time, and surveillance frequency changes approved by the NRC in WCAP-14333-P-A, Revision 1, "Probabilistic Risk Analysis of the RPS and ESFAS Test Times and Completion Times," dated October 1998, and WCAP-1 5376-P-A, Revision 1,

'Risk-Informed Assessment of the RTS and ESFAS Surveillance Test Intervals and Reactor Trip Breaker Test and Completion Times," dated March 2003.

LAR 03-17 proposed to restructure TS 3.3.1 Condition D from what was approved in TSTF-418, Revision 2, to avoid confusion as to when a flux map for quadrant power tilt ratio (QPTR) is required. Discussions with the NRC Project Manager and NRC Technical Specification Section personnel on July 13, 2004 and July 29, 2004, identified potential format concerns with the proposed Condition D. It was determined that the proposed Condition D should be revised. The proposed revision was discussed with the NRC on July 29, 2004.

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

  • Comanche Peak
  • Diablo Canyon
  • Palo Verde
  • Wolf Creek

Document Control Desk PG&E Letter DCL-04-153 November 5, 2004 Page 2 Enclosures 1 and 2 contain the marked-up and retyped proposed revisions to TS 3.3.1 Condition D, respectively. These changes supersede the TS 3.3.1 Condition D changes submitted in PG&E Letter DCL-04-013. Enclosure 3 provides the revised marked-up TS Bases pages for information only. TS Bases changes will be implemented in accordance with TS 5.5.14, "Technical Specifications Bases Control Program," at the time this amendment is implemented.

This supplemental information does not impact the conclusion of the no significant hazards determination or the results of the technical and regulatory analyses previously transmitted in PG&E Letter DCL-04-013. There are no commitments associated with this submittal.

If you have any questions or require additional information, please contact Stan Ketelsen at (805) 545-4720.

Sincerely, av tley Vice President and General Manager mjr/4557 Enclosures cc: Edgar Bailey, DHS Bruce S. Mallett David L. Proulx Diablo Distribution cc/enc: Girija S. Shukla A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

  • Comanche Peak
  • Diablo Canyon
  • Palo Verde
  • Wolf Creek

PG&E Letter DCL-04-153 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION

) Docket No. 50-275 In the Matter of ) Facility Operating License PACIFIC GAS AND ELECTRIC COMPANY ) No. DPR-80

)

Diablo Canyon Power Plant Docket No. 50-323 Units 1 and 2 Facility Operating License No. DPR-82 AFFIDAVIT James R. Becker, of lawful age, first being duly sworn upon oath says that he is Vice President - Operations and Station Director - Diablo Canyon of Pacific Gas and Electric Company; that he has executed this supplement to License Amendment Request 03-17 on behalf of said company with full power and authority to do so; that he is familiar with the content thereof; and that the facts stated therein are true and correct to the best of his knowledge, information, and belief.

Jame R\ecker Vice President- Operations and Station Director Subscribed and sworn to before me this 5th day of November 2004.

Notary Public s t County of San Luis Obispo l W_

State of California A #1z

Enclosure 1 PG&E Letter DCL-04-153 MARKUP OF TECHNICAL SPECIFICATIONS

Enclosure I PG&E Letter DCL-04-153 INSERT 3 D. One Power Range Neutron --- - NOTE---------

Flux-High channel The inoperable channel may be inoperable. bypassed for up to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> for surveillance testing and setpoint adjustment of other channels.

D.1.1 A-----NOTE-----

Only required when the Power Range Neutron Flux input to QPTR is inoperable.

Perform SR 3.2.4.2. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> from discovery of THERMAL POWER

> 75% RTP AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter AND D.1.2 Place channel in trip. 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> OR D.2 Be in MODE 3. 78 hours9.027778e-4 days <br />0.0217 hours <br />1.289683e-4 weeks <br />2.9679e-5 months <br /> I

RTS Instrumentation rv C- - .

ACTIONS

, S- 3.3.1 CONDITION I REQUIRED ACTION COMPLETION TIME

--I - -

C. (continued) AND C.2.2 Place the Rod Control 49 hours5.671296e-4 days <br />0.0136 hours <br />8.101852e-5 weeks <br />1.86445e-5 months <br /> System in a condition incapable of rod withdrawal.

I*1 e D. One power Range Neutron ---

KE NOTE-A-I Flu-xHigh channel The inoper ble channel may be jffperable. bypassed or up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveilla/ce testing and setpoi

/1 adjust ent of other channel

/ D .1 Place channel i trip. 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> AND D.1.2 Reduce ERMAL I ors POW to *75% RTP.

OR D.2.1 ace channel in trip. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />

/ AND

.2.2 -- -NOTE --

Only require o be performe hen the Power nge Neutron Flux i ut to QPTR is

/ io erable.

/

Perform SR 3.2/2. On hours OR /1

'K D.3 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> (continued)

DIABLO CANYON - UNITS 1 & 2 3.3-2 Unit 1 - Amendment No. 43&

8S91DI09.DOC - R9 2 Unit 2 - Amendment No. 445-

Enclosure 2 PG&E Letter DCL-04-153 RETYPED TECHNICAL SPECIFICATIONS Remove Insert Page 3.3-2 Page 3.3-2

RTS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. One Power Range Neutron --- -----NOTES----------

Flux - High channel The inoperable channel may be inoperable. bypassed for up to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> for I surveillance testing and setpoint adjustment of other channels.

D.1.1 -a----NOTE--------

Only required when the Power Range Neutron Flux input to QPTR is inoperable.

Perform SR 3.2.4.2. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> from discovery of THERMAL POWER

>75% RTP AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> AND thereafter D.1.2 Place channel in trip. 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> OR D.2 Be in MODE 3. 78 hours9.027778e-4 days <br />0.0217 hours <br />1.289683e-4 weeks <br />2.9679e-5 months <br /> (continued)

DIABLO CANYON - UNITS I & 2 3.3-2 Unit 1 - Amendment No. 435 331DE.doc- RXX 2 Unit 2 - Amendment No. 435

Enclosure 3 PG&E Letter DCL-04-153 PROPOSED TECHNICAL SPECIFICATION BASES CHANGES (for information only)

Enclosure 3 PG&E Letter DCL-04-153 INSERT 1 With one of the NIS power range detectors inoperable, 1/4 of the radial power distribution monitoring capability is lost. Therefore, SR 3.2.4.2 must be performed (Required Action D.1.1) within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after THERMAL POWER exceeds 75% RTP and every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter. If reactor power decreases to < 75% RTP, the measurement of both intervals stops, and SR 3.2.4.2 is no longer required. New intervals start upon reactor power exceeding 75% RTP. Calculating QPTR every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> compensates for the lost monitoring capability due to the inoperable NIS power range channel and allows continued unit operation at power levels > 75% RTP.

When THERMAL POWER is < 75%, core radial power distributions are prevented from exceeding design limits where DNB conditions may exist. The 12-hour Completion Time is consistent with the Surveillance Requirement Frequency in LCO 3.2.4, "QUADRANT POWER TILT RATIO (QPTR)."

1

RTS Instrumentation B 3.3.1 BASES ACTIONS C.1, C.2.1. and C.2.2 (continued) incapable of rod withdrawal within the next hour (e.g., by de-energizing all CRDMs, by opening the RTBs, or by de-energizing the motor generator (MG) sets). The additional hour for the latter provides sufficient time to accomplish the action in an orderly manner. With the rods fully inserted and the Rod Control System rendered incapable of rod withdrawal, these Functions are no longer required.

The Completion Time is reasonable considering that in this Condition, the remaining OPERABLE train is adequate to perform the safety function, and given the low probability of an event occurring during this interval.

Condition C is modified by a Note stating that while this LCO is not met for Functions 19, 20, or 21 in MODE 5 making the Rod Control System capable of rod withdrawal is not permitted. This note is in addition to the requirements of LCO 3.0.4 which preclude the transition from either MODE 3 or MODE 4 to MODE 3 or MODE 4 with the Rod control System capable of rod withdrawal or all rods not fully inserted for Functions 19, 20, or 21 with one channel or train inoperable.

D.1.1. D.1.2, D.2.1, P79 ' n7rl Condition D applies to the Power Range Neutron Flux-High Function.

5iz+ I The NIS power range detectors provide input to the Rod Control System and, therefore, have a two-out-of-four trip logic. A known inoperable channel must be placed in the tripped condition. This results in a partial trip condition requiring only one-out-of-three logic for actuation. The hours allowed to place the-inoerable channel in the 1 trp~ped condition is justified in Q101.a27 -P -

R-fi~

In additio to placing the inoperable channe in t tipped re conditon, THER)AL POWE must be re qced to *750/ TP withi 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.)

Ricing the po r level prey nts operatio of the co with radiaj/

power distrib ns beyond e design s. With e of the 1X power ran detectors ip6perable, 1/4 of the radial power distribution monitorin capability is lost.

s an ate ive to the above actions, t inoperable channel can be placedj the tripped condition withi 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and QPTR mo itored onc very 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> s per SR 3 .4.2, includiothe SR 3.2.. note, fsQPTR verific on. Calculat g QPTR ev 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> c pensa s for the lost mo oring capabl y due to th inoperable N power nge channel and lows contin d unit oper ion at power els > 7 /

RTP. The Bhour omption Time adth 12 hourreuenct are /

consiste~wth LCO 3.2.4, "QUADRANT POWER TILT RATIO (QPT5",

(continued)

DIABLO CANYON -'UNITS 1 & 2 Revision 2 8S91DV02.DOC - R2E 35

RTS Instrumentation B 3.3.1 BASES ACTIONS D.1.1. D.1.2. D.2.I. D.2.2. on1-C9continued)

As an alternative to the above Actions, the plant must be placed in a MODE where this Function is no longer required OPERABLE.

hours are allowed to place the plant in MODE 3.*This is a reasonable tine, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging plant systems. If Required Actions cannot be completed within their allowed Completion Times, LCO 3.0.3 must be entered.

The Required Actions have been modified by a Note that allows - ;2-placing the inoperable channel in the bypass condition for up to&hours while performing routine surveillance testing of other channels. The Note also allows placing the inoperable channel in the bypass condition to allow setpoint adjustments of other channels when required to reduce the setpoint in accordance with other Technical Specifications.

In accordance with WCAP 10271, very specific circumstances are related to the use of this bypass condition. Since the NIS channels are not designed with Bypass-capable logic that meets the requirements of IEEE 279, the provisions for bypass only apply to a specific type of channel failure. To apply, the channel must fail in such a way that it does not trip the bistables. With this type of failure, the channel may be returned to service and considered "bypassed" under this Note.

Specifically, the bypass condition is the state when a failed channel is taken out of the forced "tripped" state and placed in operation. Due to the failed nature of the channel, the channel cannot be assumed to be OPERABLE, and is therefore considered to be in a state of bypass when the channel failure is such that its bistables are not tripped. The provisions of WCAP 10271 specifically prohibit the use of jumpers or lifted leads to bypass these channels. In this configuration, a second channel can be tested or setpoints adjusted with the channel in the tripped mode without completing reactor trip logic. The(&hour time limit is justified in Reference 7. J*_

Required Action D.@ has been modified by a Note which only requires SR 3.2.4.2 to be performed if the Power Range Neutron Flux input toi R becomes inoperable. The performance of SR 3.2.4.2 per ACTION D. is subject to the SR 3.2.4.2 note. Failure of a component in the Power Range Neutron Flux Channel which renders the High Flux Trip Function inoperable may not affect the capability to monitor QPTR. As such, determining QPTR using this movable incore

'I detectors once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> may not be necessary.

(continued)

F7 1trkok

- npl:' -r t-t ft1>sctf8chc DIABLO CANYON - UNITS 1 & 2 Revision 2 8S9IDV02.DOC - R2E 36

Retrieved from "https://kanterella.com/w/index.php?title=DCL-04-153,_Supplement_to_License_Amendment_Request_03-17,_Common_Stars_License_Amendment_Implementation_of_WCAP-14333_and_WCAP-15376,_RTS_and_ESFAS_Test_Times,_Completion_Times,_and_Surveillance_Test_Intervals&oldid=2604048"