ML20197D009

Amends 141 & 133 to Licenses NPF-10 & NPF-15,respectively, Revising TS to Extend AOT for off-site Circuits & for EDG

ML20197D009
Person / Time
Site:	San Onofre
Issue date:	09/09/1998
From:	Clifford J NRC (Affiliation Not Assigned)
To:
Shared Package
ML20197D014	List: ML20197D009 ML20197D016
References
FACA, NUDOCS 9809150105
Download: ML20197D009 (10)

Text

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UNITED STATES j

NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. enmas mi o, ' CT g*****

SOUTHERN CALIFORNIA EDISON COMPANY SAN DIEGO GAS AND ELECTRIC COMPANY THE CITY OF RIVERSIDE. CALIFORNIA THE CITY OF ANAHEIM. CALIFORNIA DOCKET NO. 50-361 SAN ONOFRE NUCLEAR GENERATING STATION. UNIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.141 License No. NPF-10 1.

The Nuclear Regulatory Commission (the Commission) has found that:

A.

The application for amendment by Southem Califomia Edison Company, et al.

(SCE or the licensee) dated July 22,1998, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and a!! applicable requirements have been satisfied.

9909150105 990909 PDR ADOCK 05000361 P

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. 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C(2) of Facility Operating License No. NPF-10 is hereby amended to read as follows:

(2)

Technical Soecifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised through Amendment No.

141

, are hereby incorporated in the license. Southem Califomia Edison Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

The license amendment is effective as of the date of its issuance and is to be implemented within 30 days from the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION wA/

n James W. Clifford, Senior Project Manager Project Directorate IV-2 Division of Reactor Projects ill/IV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: September 9, 1998 i

i

2-I license amendment request. Due to staff concems, SCE subsequently revised its analysis and performed a risk analysis without reliance on the inter-unit crost tie. This analysis was provided in the July 22,1998, submittal. Therefore the cross tie is not credited by the licensee in the risk analysis and is not credited in this safety evaluation.

Sections 3.1 and 3.2 of this evaluation address the deterministic aspects of the proposed

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changes. The probabilistic risk assessment review is addressed in Section 3.3.

2.0 BACKGROUND

SONGS Units 2 and 3 are each equipped with two Class 1E EDGs which supply backup power to the 4160 V vital buses in the event of a loss of offsite power. Each EDG is connected to the.

4160 V bus of a load group. Each EDG is designed to automatically start in the event of a bus under voltage signal or upon receipt of a safety injection actuation signal. Each EDG is designed to start automatically within 10 seconds following receipt of a start signal. Each EDG is sized to supply reliable power to all safety-related loads in its respective loaJ group, as well as specific non safety related loads.

Each EDG system consists of two tandem diesel generators per unit. Each diesel generator has two engines (one 16 cylinder engine #1 and one 20 cylinder engine #2) connected to one ac generator manufactured by Ideal Electric. Each diesel engine is a General Motors Electro-Motive Division turbo-charged Model 645E4. Each tandem unit is rated at 6670 hp at 900 rpm and has a continuous rating of 4700 kW.

3.0 EVALUATION in their submittal dated July 22,1998, Southern Califomia Edison Company proposed the j

following changes to TS 3.8.1, ".C Sources - Operating:"

Extend the se' ond Completion Time in Required Action A.2 for an inoperable Offsite 1.

c circuit from "6 days from discovery of failure to meet LCO" to "17 days from discovery of failure to meet LCO."

2.

Extend the Completion Time in Required Action B.4 for a single inoperable EDG from

'72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> M 6 days from recovery of failure to meet LCO" to "14 days M 17 days from discovery of failure to meet LCO."

Additionally, the pertinent Bases sections are revised to reflect the above TS changes in Section 3.8.1. In particular, the following statement is added to Bases 3.8.'1, "AC Scurces -

Operating," under Action A.2:

"As required by TS 5.5.2.14, a Configuration Risk Management Program is implemented in the event of Condition A."

l The following statement is also added to Bases 3.8.1,"AC Sources-Operating," under Action B.4:

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ATTACHMENT TO LICENSE AMENDMENT l

AMENDMENT NO. 141 TO FACILITY OPERATING LICENSE NO. NPF-10 l

l DOCKET NO. 50-361 Revise Appendix A Technical Specifications by removing the pages identined below and inserting the enclosed pages. The revised pages a.*e identified by Amendment number and contain marginallines indicating the areas of change.

REMOVE INSERT 3.8-1 3.8-1 3.8-2 3 8-2 l

AC Sources-Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS 3.8.1 AC. Sources -Operating LCO 3.8.1 The following AC electrical sources shall be OPERABLE:

a.

Two qualified circuits between the offsite transmission network and the onsite Class IE AC Electrical Power i

' Distribution System; and b.

Two diesel generators (DGs) each capable of supplying one train of the onsite Class IE AC Electrical Power Distribution System.

APPLICABILITY:

H0 DES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One required offsite A.1 Perform SR 3.8.1.1 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> circuit inoperable.

for required OPERABLE offsite circuit.

E Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter E

A.2 Restore required 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> offsite circuit to OPERABLE status.

E 17 days from l

discovery of failure to meet LCO (continued)

LAN ONOFRE--UNIT 2 3.8 1 Amendment No. 127,141 j

AC Sources-Operating 3.8.1 l

ACTIONS (continued) i CONDITION REQUIRED ACTION COMPLETION TIME B.

One required DG B.1 Perform SR 3.8.1.1 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable.

for the OPERABLE required offsite AND circuits.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter AHQ B.2 Declare required 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from feature (s) supported discovery of by the inoperable DG Condition B inoperable when its concurrent with redundant required inoperability of feature (s) is redundant inoperable, required feature (s) i AND B.3.1 Determine OPERABLE DG 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is not inoperable due to common cause failure.

)

QB B.3.2 Perform SR 3.8.1.2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for OPERABLE DG.

b8D B.4 Restore required DG 14 days to OPERABLE status.

b8D 17 days from

• l.

discovery of failure to meet LCO (continued)

SAN ONOFRE--UNIT 2 3.8-2 Amendment No. 127,141

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UNITED STATES g

j NUCLEAR REGULATORY COMMISSION O

WASHINGTON, D.C. 20666 4 001 SOUTHERN CAllFORNIA EDISON COMPANY SAN DIEGO GAS AND ELECTRIC COMPANY THE CITY OF RIVERSIDE. CAllFORNIA THE CITY OF ANAHEIM. CALIFORNIA DOCKET NO. 50-362 SAN ONOFRE NUCLEAR GENERATING STATION. UNIT NO. 3 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.133 License No. NPF-15 1.

The Nuclear Regulatory Commission (the Commission) has found that:

A.

The application for amendment by Southern Califomia Edison Comnany, et al.

(SCE or the licensee) dated July 22,1998 complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the app 1 cation, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities suthorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

. l l

2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C(2) of Facility l

Operating License No. NPF-15 is hereby amended to read as follows:

i (2)

Technical Soecifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix 3 as revised through Amendment No.

133

, are hereby incorporated in the I!;ense. Southern California Edison Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

This license amendment is effective as of the date of its issuance and is to be implemented within 30 days from the date of its issuarece.

FOR THE NUCLEAR REGULATORY COMMISSION l

afd04/Y J

es W. Clifford, Senior Project Manager Project Directorate IV-2 Division of Reactor Projects Ill/lV Office of Nuclear Reactor Regulation j

Attachment:

Changes to the Technical Specifications Date of issuance: September 9, 1998 i

j i

ATTACHMENT TO LICENSE AMENDMENT I

AMENDMENT NO. 133 TO FACILITY OPERATING LICENSE NO. NPF-15 DOCKET NO. 50-362 Revise Appendix A Technical Specifications by removing the pages identified below and inserting the enclosed pages. The revised pages are identified by Amendment number and contain marginallines indicating the areas of change.

f REMOVE INSERT 3.8-1 3.8-1 3.8-2 3.8-2 l

e i

. ~

AC Sources-Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS 3.8.1 AC Sources-Operating LCO 3.8.1 The following AC electrical sources shaN be OPERABLE:

a.

Two qualified circuits between the offrite transmission network and the onsite Class 1E AC Electrical Power Distribution System; and b.

Two diesel generators (DGs) each capable of supplying one train of the onsite Class IE AC Electrical Power Distribution System.

APPLICABILITY:

MODES 1, 2, 3, and 4.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One required offsite A.1 Perform SR 3.8.1.1 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> circuit inoperable.

for required OPERABLE offsite circuit.

E Once per S hours thereafter E

A.2 Restore required 72 hcurs offsite circuit to OPERABLE status.

E 17 days from discovery of failure to meet LCO (continued)

SAN ONOFRE--UNIT 3 3.8-1 Amendment No. 116,133

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B.

One required DG B.1 Ferform SR 3'.8.1.1 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable.

for the OPERABLE

' required offsite E

i circuits.

i Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter E

B.2 Declare required 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from feature (s) supported discovery of by the inoperable DG Condition B inoperable when its concurrent with redundant requited inoperability of feature (s)is redundant inoperable.

required feature (s)

E B.3.1 Determine OPERABLE DG 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is not inoperable due to common cause failure.

E B.3.2 Perform SR 3.8.1.2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for OPERABLE DG.

j E

l B.4 Restore required DG 14 days to OPERABLE status.

~

lE 17 days from l

disecvery of failure to meet LCO (continued)

SAN ONOFRE--UNIT 3 3.8-2 Amendment No. 116,133

.