RBG-47300, Changes to Technical Specification 3.8.1; AC Sources - Operating

Changes to Technical Specification 3.8.1; AC Sources - Operating

ML12321A025
Person / Time
Site:	River Bend
Issue date:	10/26/2012
From:	Roberts J Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RBG-47300
Download: ML12321A025 (9)

Text

AN , Entergy Operations, Inc.

River Bend Station Lntergy0 5485 U.S. Highway 61 N St. Francisville, LA 70775 Tel 225-381-4374 Jerry C. Roberts

/Director, Nuclear Safety Assurance

/

RBG-47300 October 26, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

License Amendment Request Changes to Technical Specification 3.8.1 ;" AC Sources - Operating" Supplemental Information River Bend Station, Unit 1 Docket No. 50-458 License No. NPF-47 Reference Entergy Letter to NRC dated December 8, 2011, Changes to Technical Specification 3.8.1;" AC Sources - Operating" (RBG-47191)

Dear Sir or Madam:

On December 8, 2011, Entergy Operations, Inc. (Entergy) submitted a request for an amendment to the Technical Specifications (TS) 3.8.1 ;"AC Sources - Operating." This request will revise TS 3.8.1 and the associated Bases, to expand its scope to include provisions for testing of the automatic transfer function from the station 22 kV bus to offsite power for Division Il1.

Attachment 2 of this request provided the existing TS pages marked up to show the proposed changes.

During the review of this request administrative errors were identified in the Technical Specification Action section as a result of an additional Condition and associated Required Action and Completion Time. The resulting change affected pages 3.8-1 through 3.8-4, including the new page 3.8-2a necessary to add the additional action B.

This re-numbering did not change the scope or intent of the request.

Attachment 1 to this letter contains the revised Technical Specification Action section with the corrections in final form.

This subject has been discussed with the NRC Project Manager.

No~

RBG-47300 Page 2 of 2

/I

,There are no new commitments in this letter.

If you have any questions or require additional information, please contact Mr. Joseph A.

Clark at (225) 381-4177.

I declare under penalty of perjury that the foregoing is true and correct. Executed on October 26, 2011 Sincerely, JCR/JAC/bmb Attachments:

1. Proposed Technical Specification Changes (mark-up)

RBF1-12-0163 cc: Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector P. 0. Box 1050 St. Francisville, LA 70775 U. S. Nuclear Regulatory Commission Attn: Mr. Alan B. Wang MS 0-8 B1 Washington, DC 20555-0001 Department of Environmental Quality

.Office of Environmental Compliance Radiological Emergency Planning and Response Section JiYoung Wiley P.O. Box 4312 Baton Rouge, LA 70821-4312

/

Attachment I

)RBG-47300 Technical Specification Markup

AC Sources-Operating 3.8.1 3.8 ELECTRICAL POWER SYSTEMS

'3.8.1 AC Sources-Operating fLCO 3.8.1 The following AC electrical power sources shall be OPERABLE:

a. Two qualified circuits between the offsite transmission network and the onsite Class 1 E AC Electric Power Distribution System; and

b. Three diesel generators (DGs).

APPLICABILITY: MODES 1, 2, and 3.

---

NOTES -----------------------

1. Division III AC electrical power sources are not required to be OPERABLE when High Pressure Core Spray System and Standby Service Water System pump 2C are inoperable.

2. The automatic transfer function for the Division III 4.16 kV system buses shall be OPERABLE whenever the 22 kV onsite circuit is supplying Division III safety related bus E22-S004 from normal power transformer STX-XNS 1C.

ACTIONS I* I t"* "11-It"

,I*LI

. I -----------------------------------------------------------------

LCO 3.0.4.b is not applicable to DGs.

CONDITION REQUIRED-ACTION COMPLETION TIME A. One required offsite circuit A.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable. OPERABLE required offsite circuit. AND Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter AND (continued)

RIVER BEND 3.8-1 Amendment No.81-156, 176

I AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME A. (continued) ---- ---------------- NOTE -------------------

Verification is only required if22 kV onsite circuit is supplying Division III safety related bus E22-S004 from normal power transformer STX-XNS 1C.

A.2 Verify E22-S004 is 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> aligned to transfer to the preferred station AND transformer powered by the OPERABLE offsite Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> circuit. thereafter AND A.3 Restore required offsite 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> circuit to OPERABLE status. AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from discovery of two divisions with no offsite power AND 17 days from discovery of failure to meet LCO B. Automatic transfer function B.1 Restore Division III power 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> not OPERABLE source to the preferred station service transformers (continued)

RIVER BEND 3.8-2 Amendment No. Al-1-25, 176

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME C. One required DG C.1 Perform SR 3.8.1.1 for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable. OPERABLE required offsite circuit(s). AND Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter AND C.2 Declare required 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from discovery feature(s), supported by of Condition C the inoperable DG, concurrent with inoperable when the inoperability of redundant required redundant required feature(s) are inoperable, feature(s)

AND (continued)

RIVER BEND 3-8-2a Amendment No. 176 1

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME

-C. (continued) C.3.1 Determine OPERABLE 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> DG(s) are not inoperable due to common cause failure.

.,i OR C.3.2 Perform SR 3.8.1.2 for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> OPERABLE DG(s).

AND C.4 Restore required DG to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from OPERABLE status. discovery of an inoperable Division III DG AND 14 days AND 17 days from discovery of failure to meet LCO D. Two required offsite circuits D.1 Declare required 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> from inoperable, feature(s) inoperable discovery of when the redundant Condition D required feature(s) are concurrent with inoperable. inoperability of redundant required feature(s)

AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> D.2 Restore one required offsite circuit to OPERABLE status.

(continued)

RIVER BEND 3.8-3 Amendment No. 81-1-25, 176

J AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME

)E. One required offsite circuit ------------------- NOTE ---------

inoperable. Enter applicable Conditions and Required Actions of AND LCO 3.8.9, "Distribution Systems-Operating," when any One required DG division is de-energized as a inoperable. result of Condition E.

E.1 Restore required offsite 112 hours0.0013 days <br />0.0311 hours <br />1.851852e-4 weeks <br />4.2616e-5 months <br /> circuit to OPERABLE status.

OR E.2 Restore required DG to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> OPERABLE status.

F. Two required DGs F.1 Restore one required 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> inoperable. DG to OPERABLE status. OR 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> if Division III DG is inoperable G. Required Action and G.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Associated Completion Time of Condition A, B, C, AND D, E or F not met.

G.2 Be in MODE 4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> H. Three or more required AC H.1 Enter LCO 3.0.3. Immediately sources inoperable.

RIVER BEND 3.8-4 Amendment No. 84,176

/ AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.7 ------------- NOTE---

All DG starts may be preceded by an engine prelube period.

Verify each DG starts from standby conditions and 184 days achieves:

a. For DG 1A and DG 1B:

1. In _<10 seconds, voltage Ž_3740 V and frequency _> 58.8 Hz; and

2. Steady state voltage Ž 3740 V and

< 4580 V and frequency _> 58.8 Hz and

_ 61.2 Hz.

b. For DG 1C:

1. Maximum of 5400 V, and 66.75 Hz, and

2. In < 13 seconds, voltage > 3740 V and frequency Ž_58.8 Hz; and

3. Steady state voltage >_3740 V and

< 4580 V and frequency >_58.8 Hz and

_ 61.2 Hz.

SR 3.8.1.8 -----------------

NOTES ----------------

1. This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned events that satisfy this SR.

2. SR 3.8.1.8.b is only required to be met if 22 kV onsite circuit is supplying Division III safety related bus E22-S004 from normal power transformer STX-XNS1 C.

a. Verify manual transfer of unit power supply from 24 months the normal offsite circuit to required alternate offsite circuit.

b. Verify automatic transfer of bus E22-S004 24 months through NNS-SWG1A or NNS-SWG1B from the 22 kV onsite circuit to required offsite circuit.

(continued)

RIVER BEND 3.8-7 Amendment No.84-421 165 !68, 176