05000423/LER-2014-001, Limiting Condition for Operation Exceeded Upon Approval of Enforcement Discretion

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Limiting Condition for Operation Exceeded Upon Approval of Enforcement Discretion
ML14084A306
Person / Time
Site: Millstone Dominion icon.png
Issue date: 03/17/2014
From: Scace S
Dominion Nuclear Connecticut
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
14-099 LER 14-001-00
Download: ML14084A306 (5)


LER-2014-001, Limiting Condition for Operation Exceeded Upon Approval of Enforcement Discretion
Event date:
Report date:
Reporting criterion: 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications

10 CFR 50.73(a)(2)(i)

10 CFR 50.73(a)(2)(vii), Common Cause Inoperability

10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded

10 CFR 50.73(a)(2)(viii)(A)

10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition

10 CFR 50.73(a)(2)(viii)(B)

10 CFR 50.73(a)(2)(iii)

10 CFR 50.73(a)(2)(ix)(A)

10 CFR 50.73(a)(2)(iv)(A), System Actuation

10 CFR 50.73(a)(2)(x)

10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor

10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat

10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown

10 CFR 50.73(a)(2)(v), Loss of Safety Function
4232014001R00 - NRC Website

text

)--,Dominio~ii Dominion Nuclear Connecticut, Inc.

Rope Ferry Rd., Waterdord, CT 06385 Mailing Address: P.O. Box 128 Waterford, CT 06385 don.corn U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 MAR 17 2014 Serial No.

MPS Lic/ITGC Docket No.

License No.14-099 RO 50-423 DPR-49 DOMINION NUCLEAR CONNECTICUT, INC.

MILLSTONE POWER STATION UNIT 3 LICENSEE EVENT REPORT 2014-001 -00 LIMITING CONDITION FOR OPERATION EXCEEDED UPON APPROVAL OF ENFORCEMENT DISCRETION This letter forwards Licensee Event Report (LER) 2014-001-00 documenting a condition at Millstone Power Station Unit 3 on January 26, 2014. This LER is being submitted pursuant to 10 CFR 50.73(a)(2)(i)(B).

If you have any questions or require additional information, please contact Mr. William D. Bartron at (860) 444-4301.

Sincerely,

/ Step E. Scace r-Site Vice President - Millstone Attachments: 1 Commitments made in this letter: None

Serial No.14-099 Docket No. 50-423 Licensee Event Report 2014-001-00 Page 2 of 2 cc:

U.S. Nuclear Regulatory Commission Region I 2100 Renaissance Blvd, Suite 100 King of Prussia, PA 19406-2713 M. C. Thadani NRC Project Manager Millstone Units 2 and 3 U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 08 B-1 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station

Serial No.14-099 Docket No. 50-423 Licensee Event Report 2014-001-00 ATTACHMENT LICENSEE EVENT REPORT 2014-001-00 LIMITING CONDITION FOR OPERATION EXCEEDED UPON APPROVAL OF ENFORCEMENT DISCRETION MILLSTONE POWER STATION UNIT 3 DOMINION NUCLEAR CONNECTICUT, INC.

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY 0MB: NO. 3150-0104 EXPIRES: 0113112017 (02-2014)

Estimated burden per response to comply with this mandatory collection request: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />.

Reported lessons learned are incorporated into the licensing process and fed back to industry.

Send comments regarding burden estimate to the FOIA, Privacy and Information Collections LICENSEE EVENT REPORT (LER)

Branch (T-5 F53), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by LE EO internet e-mail to lnfocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and (See Page 2 for required number of Regulatory Affairs, NEOB-10202, (3150-0104), Office of Management and Budget, Washington, DC for each block) 20503. If a means used to impose an information collection does not display a currently valid OMB digits/characters control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.

3. PAGE Millstone Power Station - Unit 3 05000423 1 OF 2
4. TITLE Limiting Condition for Operation Exceeded Upon Approval of Enforcement Discretion
5. EVENT DATE
6. LER NUMBER
7. REPORT DATE
8. OTHER FACILITIES INVOLVED SFACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH DAY YEAR NUMBER NO.

05000 FACILITY NAME DOCKET NUMBER 01 26 2014 2014 -

001 00 03 17 2014 05000

9. OPERATING MODE
11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)

El 20.2201(b)

F1 20.2203(a)(3)(i)

F1 50.73(a)(2)(i)(C)

[_

50.73(a)(2)(vii)

El 20.2201(d)

El 20.2203(a)(3)(ii)

[: 50.73(a)(2)(ii)(A)

El 50.73(a)(2)(viii)(A)

El 20.2203(a)(1)

El 20.2203(a)(4)

El 50.73(a)(2)(ii)(B)

El 50.73(a)(2)(viii)(B) 20.2203(a)(2)(i)

El 50.36(c)(1)(i)(A)

El 50.73(a)(2)(iii)

[1 50.73(a)(2)(ix)(A)

10. POWER LEVEL El 20.2203(a)(2)(ii)

El 50.36(c)(1)(ii)(A)

El 50.73(a)(2)(iv)(A)

EI 50.73(a)(2)(x)

El 20.2203(a)(2)(iii)

[1 50.36(c)(2)

El 50.73(a)(2)(v)(A)

El 73.71(a)(4)

El 20.2203(a)(2)(iv)

F1 50.46(a)(3)(ii)

El 50.73(a)(2)(v)(B)

El 73.71(a)(5) 096 El 20.2203(a)(2)(v)

El 50.73(a)(2)(i)(A)

El 50.73(a)(2)(v)(C)

El OTHER LI 20.2203(a)(2)(vi)

[

50.73(a)(2)(i)(B)

Li 50.73(a)(2)(v)(D)

Specify in Abatract beiow or in

_____________________________________________________________________________NRC___FoNRCForm366

12. LICENSEE CONTACT FOR THIS LER LICENSEE CONTACT TELEPHONE NUMBER (Include Area Code)

William D. Bartron, Supervisor Nuclear Station Licensing 860-444-4301CAUSE SYSTEM COMPONENT MANU-REPORTABLE

CAUSE

S U-REPORTABLE C

S FACTURER TO EPIX FAT

+/-

COMPONENT FTURER TO EPIX

14. SUPPLEMENTAL REPORT EXPECTED
15. EXPECTED MONTH DAY YEAR SUBMISSION

[]

YES (If yes, complete 15. EXPECTED SUBMISSION DATE)

[

NO DATE ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines)

At 1350 on January 26, 2014 while operating in Mode 1 at approximately 96% power, Millstone Power Station Unit 3 (MPS3) exceeded the Limiting Condition for Operation of plant Technical Specification (TS) 3.7.1.2 "Auxiliary Feedwater System" Action C for an inoperable auxiliary feedwater pump. The turbine driven auxiliary feedwater pump (TDAFWP) had been declared inoperable at 1350 on January 23, 2014. TS 3.7.1.2 Action C requires that the pump be restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or 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 HOT SHUTDOWN within the following 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The TDAFWP had been declared inoperable on January 23, 2014 when the pump tripped during a test. Subsequent repairs, maintenance, and testing were nearing completion but, would require additional time beyond the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> TS Action C requirements. In a teleconference call on January 26, 2014, Dominion Nuclear Connecticut, Inc. (DNC) requested a notice of enforcement discretion (NOED) from the requirements of TS 3.7.1.2, Action C. The NRC exercised enforcement discretion to not enforce compliance with TS 3.7.1.2, Action C, for an additional period of 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> (to expire at 0150 January 28, 2014). The TDAFWP was restored to OPERABLE status at 0505 on January 27, 2014.

This condition is being reported as any operation or condition which was prohibited by the plant's technical specifications in accordance with 10 CFR 50.73 (a)(2)(i)(B).

NRC FORM 366 (02-2014)

1. EVENT DESCRIPTION

At 1350 on January 26, 2014 while operating in Mode 1 at approximately 96% power, Millstone Power Station Unit 3 (MPS3) exceeded the Limiting Condition for Operation of plant Technical Specification (TS) 3.7.1.2 "Auxiliary Feedwater System" Action C for an inoperable auxiliary feedwater pump. The turbine driven auxiliary feedwater pump (TDAFWP) [EIIS: BA-P] had been declared inoperable at 1350 on January 23, 2014.

TS 3.7.1.2 Action C requires that the pump be restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or 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 HOT SHUTDOWN within the following 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The TDAFWP had been declared inoperable on January 23, 2014 when the pump tripped during a test.

Subsequent repairs, maintenance, and testing were nearing completion but, would require additional time beyond the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> TS 3.7.1.2 Action C requirements. In a teleconference call on January 26, 2014, Dominion Nuclear Connecticut, Inc. (DNC) requested a notice of enforcement discretion (NOED) from the requirements of TS 3.7.1.2, Action C. The NRC exercised enforcement discretion to not enforce compliance with TS 3.7.1.2, Action C, for an additional period of 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> (to expire at 0150 January 28, 2014). The TDAFWP was restored to OPERABLE status at 0505 on January 27, 2014.

This condition is being reported as any operation or condition which was prohibited by the plant's technical specifications in accordance with 10 CFR 50.73 (a)(2)(i)(B).

2.

CAUSE

Repairs, maintenance, and testing were nearing completion but, would require additional time beyond the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> technical specification requirements. MPS3 exceeded the Limiting Condition for Operation of plant Technical Specification (TS) 3.7.1.2 "Auxiliary Feedwater System" Action C upon obtaining verbal approval that the NRC exercised enforcement discretion to not enforce compliance with TS 3.7.1.2, Action C, for an additional period of 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> (to expire at 0150 January 28, 2014).

2.

ASSESSMENT OF SAFETY CONSEQUENCES

The request for enforcement discretion was presented per NRC Inspection Manual, Chapter 0410, "Notices of Enforcement Discretion" (MC410). During the teleconference on January 26, 2014, and further elaborated in the letter submitted on January 28, 2014 (Accession Number ML1403036A095), DNC indicated that from a risk perspective, it was unnecessary to place MPS3 into a plant shutdown in that MPS3 was operating in a stable configuration with offsite power and both MPS3 emergency diesel generators available, along with the station blackout diesel generator. Quantitatively, the estimated Incremental Conditional Core Damage Probability (ICCDP) was approximately 2.97E-08, and the Incremental Conditional Large Early Release Probability (ICLERP) was approximately 1.88E-09. Additionally, the ICCDP and ICLERP values did not take into account various additional conservatisms associated with compensatory actions.

4. CORRECTIVE ACTION

The corrective actions to affect repairs and perform necessary maintenance and testing of the tripped pump were completed at 0505 on January 27, 2014. No additional corrective actions related to exceeding the TS LCO on January 27, 2014 were deemed necessary and no associated changes to technical specifications were required.

5.

PREVIOUS OCCURRENCES

There have been no previous occurrences.