DCL-08-100, Supplement to License Amendment Request 07-03, Revision to Technical Specification 3.7.10, Control Room Ventilation System (CRVS)

Supplement to License Amendment Request 07-03, Revision to Technical Specification 3.7.10, Control Room Ventilation System (CRVS)

ML083570337
Person / Time
Site:	Diablo Canyon
Issue date:	11/25/2008
From:	Conway J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-08-100, NUREG-1431
Download: ML083570337 (7)

Text

Pacific Gas Electric and Companya John T. Conway Diahlo Canyon Power Plant Senior Vice President & P. 0. Box 56 Chief Nuclear Officer Avila Beach, CA93424 November 25, 2008 805.545.3333 Fax: 805.5,15.6445 PG&E Letter DCL-08-100 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 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 07-03, Revision to Technical Specification 3.7.10, Control Room Ventilation System (CRVS)

References:

1. PG&E Letter DCL-07-114, "License Amendment Request 07-03, Revision to Technical Specification 3.7.10, Control Room Ventilation System (CRVS)," dated December 26, 2007

2. Technical Specification Task Force Technical Specification Change Traveler, TSTF-448, Revision 3

Dear Commissioners and Staff:

Pacific Gas and Electric Company (PG&E) submitted Reference 1 to revise Technical Specification (TS) 3.7.10, "Control Room Ventilation System (CRVS),"

to modify TS requirements related to control room envelope habitability in accordance with Technical Specification Task Force (TSTF) Traveler number TSTF-448, Revision 3, consistent with the notice published in the FederalRegister on January 17, 2007, as part of the consolidated line item improvement process.

Subsequent to the Reference 1 submittal, the NRC identified a difference between the DCPP proposed change and the current NUREG-1431 standard TS. This change will make DCPP TS 3.7.10 Condition C consistent with TSTF-448 and NUREG-1431.

Thiletter provides a supplement to the Reference 1 proposed TS 3.7.10 and TS 3.7.10 Bases, to revise Condition C;to state, "Required Action and associated Completion Time of Condition A or B not met in MODE 1, 2, 3, or 4." The current DCPP TS 3.7.10 Condition C only applies if Condition A is not met.

A description of the required change is contained in Enclosure 1.

itv A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway . Comanche Peak

• Diablo Canyon - Palo Verde

• San Onofre 0 South Texas Project - Wolf Creek I'

Document Control Desk PG&E Letter DCL-08-100 November 25, 2008 Page 2 A revised marked-up TS page for TS 3.7.10, page 3.7-18, is contained in Enclosure 2. A revised retyped TS page for TS 3.7.10, page 3.7-18, is contained in Enclosure 3. The revised marked-up and retyped TS Pages supersede those previously provided in Enclosure 2 and Enclosure 3 of Reference 1, respectively.

No changes to the proposed TS 3.7.10 TS Bases pages are required as a result of this change.

This information does not affect the results of the technical evaluation, or the no significant hazards consideration determination, previously transmitted in Reference 1.

PG&E makes no regulatory commitments (as defined by NEI 99-04) in this letter.

This letter includes no revisions.to existing regulatory commitments.

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

I state under penalty of perjury that the foregoing is true and correct.

Executed on November 25, 2008.

Sincerely, Jo T. Conway Sen or Vice President& Chief Nuclear Officer mjrm/4557/50034939 Enclosures cc: Gary W. Butner, California Department of Public Health Elmo E. Collins, NRC Region IV Michael S. Peck, NRC, Senior Resident Inspector Diablo Distribution cc/enc: Alan B. Wang, NRC Project Manager, NRR A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde . San Onofre

• South Texas Project

• Wolf Creek

Enclosure 1 PG&E Letter DCL-08-100 Revised TS 3.7.10 for License Amendment Request 07-03, "Revision to Technical Specification 3.7.10, Control Room Ventilation System (CRVS)"

Pacific Gas and Electric Company (PG&E) Letter DCL-07-114, "License Amendment Request 07-03, Revision to Technical Specification 3.7.10, 'Control Room Ventilation System (CRVS),"' dated December 26, 2007 (Reference 1), was submitted to modify TS requirements related to control room envelope habitability in accordance with Technical Specification Task Force (TSTF) Traveler number TSTF-448, Revision 3, consistent with the notice published in the FederalRegister on January 17, 2007, as part of the consolidated line item improvement process.

PG&E is providing this supplement to revise the proposed changes in Reference 1 revising TS 3.7.10 Condition C to state, "Required Action and associated Completion Time of Condition A or B not met in MODE 1,'2, 3, or 4." The current DCPP TS 3.7.10 Condition C only applies if Condition A is not met. This change is already present in NUREG-1431. This change will make DCPP TS 3.7.10 Condition C consistent with TSTF-448 and NUREG-1431.

No changes to the proposed TS 3.7.10 TS Bases pages are required as a result of this change.. The proposed TS Bases changes provided in Reference 1 already include the following which discuss Condition C required actions and Completion Times for Condition B Completion Times not met:

"in MODE 1, 2, 3, or 4, if the inoperable CRVS train or the CRE boundary cannot be restored to OPERABLE status within the required Completion Time, the unit must be placed in a MODE that minimizes accident risk. To achieve this status, the unit must be placed in at least MODE 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in MODE 5 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 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."

The TS Bases changes will be implemented pursuant to TS 5.5.14, "Technical Specifications Bases Control Program."

1

Enclosure 2 PG&E Letter DCL-08-100 Proposed Technical Specification Page 3.7-10 (marked-up) 1

CRVS 3.7.10 3.7 PLANT SYSTEMS 3.7.10 Control Room Ventilation System (CRVS)

LCO 3.7.10 Two CRVS trains shall be OPERABLE.

---

r -------------- !-----------------------------------------------

K I f"* -r I'-

The Gcontrol Rroom envelope (CRE) boundary may be opened intermittently under I administrative controls.

APPLICABILITY: MODES 1, 2, 3, 4, 5, and 6.

During movement of recently irradiated fuel assemblies.

ACTIONS

---

NOTE ------------------------------

ACTIONS apply simultaneously to both units.

CONDITION REQUIRED ACTION COMPLETION TIME A. One CRVS train inoperable A.1 Restore CRVS train to 7 days for reasons other than OPERABLE status.

Condition B.

B. T-wo-One or more CRVS B.1 Initiate action to 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s[mmediately trains inoperable due to implement mitigating inoperable GGnt-l actions.

-eemCRE boundary in AND MODE 1, 2, 3, or 4.

B.2 Verify mitigating actions 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ensure CRE occupant exposures to radiological hazards will not exceed limits, and CRE.

occupants are protected from smoke and chemical hazards.

AND B.34-_ Restore GentFol 90 days

-eemCRE boundary to OPERABLE status.

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion AND Time of Condition A or B not met in MODE 1, 2, 3, or C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> 4.

(continued) 3.7-18 Unit 1 - Amendment No. 4-35,4-63,484*,

Unit 2 - Amendment No. 5,,46-5,4-86&

Enclosure 3 PG&E Letter DCL-08-100 Proposed Technical Specification Page 3.7-10 (retyped)

Remove Page Insert Page 3.7-18 3.7-18 1

CRVS 3.7.10 3.7 PLANT SYSTEMS 3.7.10 Control Room Ventilation System (CRVS)

LCO 3.7.10 Two CRVS trains shall be OPERABLE.

..................-------------------------------------- NOTE -------------------------------------------------------------

The control room envelope (CRE) boundary may be opened intermittently under administrative controls.

APPLICABILITY: MODES 1, 2, 3, 4, 5, and 6.

.- During movement of recently irradiated fuel assemblies.

ACTIONS

---

NOTE ------------------------------

ACTIONS apply simultaneously to both units.

CONDITION, REQUIRED ACTION COMPLETION TIME A. One CRVS train inoperable A.1 Restore CRVS train to 7 days for reasons other than OPERABLE status.

Condition B.

B. One or more CRVS trains B.1 Initiate action to Immediately inoperable due to implement mitigating inoperable CRE boundary actions.

in MODE 1, 2, 3, or 4. AND B.2 Verify mitigating actions 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> ensure CRE occupant exposures to radiological hazards will not exceed limits, and CRE occupants are protected from smoke and chemical hazards.

AND 8.3 Restore CRE boundary 90 days to OPERABLE status.

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion AND Time of Condition A or B not met in MODE 1, 2, 3, or C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> 4.

(continued) 3.7-18 Unit 1 - Amendment No. 4-35,463,-849, Unit 2 - Amendment No. 4-35,4-65,486-,