ML15211A377

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Response to Request for Information on Change to Technical Specification 3.8.1, AC Sources - Operating
ML15211A377
Person / Time
Site: River Bend 
Issue date: 07/16/2015
From: Brumfield N
Entergy Nuclear Operations
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RBG-47582
Download: ML15211A377 (11)
v • d • e


Text

SEntergy Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61N St Francisvdlle, LA 70775 Tel 225-381-4157 N. Todd Brumfield Director - Regulatory & Performance Improvement RBG-47582 July 16, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

Response to Request for Information - Change to Technical Specification 3.8.1, "AC Sources - Operating" River Bend Station, Unit 1 Docket No. 50-458 License No. NPF-47 References

1. Entergy letter, Application for Change to Technical Specification 3.8.1, "AC Sources - Operating" dated July 9, 2014 (RBG-47461)
2. NRC email, River Bend Station Unit 1 License Amendment Request for Change to Technical Specifications 3.8.1, "AC Sources - Operating" (MF4421) dated January 20, 2015
3. Entergy letter, Response to Request for Information - Change to Technical Specification 3.8.1, "AC Sources -

Operating" dated May 7, 2015

4. NRC email, River Bend Station Unit 1 License Amendment Request for Change to Technical Specifications 3.8.1, "AC Sources - Operating" (MF4421) dated May 04, 2015
5. Entergy letter, Response to Request for Information - Change to Technical Specification 3.8.1, "AC Sources -- Operating" dated June 3, 2015

Dear Sir or Madam:

In Reference 1 Entergy submitted a request for an amendment to the Technical Specifications (TS) for River Bend Station (RBS), Unit 1, modifying the existing Surveillance Requirements (SRs) related to Technical Specification 3.8.1, "AC Sources -

Operating." References 3 and 5, are responses to NRC Staff requested additional information.

During the review an editorial changes to the numbering of the revised TS SRs was identified. The changes are for clarity and have no technical effect. The changes are identified in the attachment.

RBG-47582 Page 2 of 3 The changes were discussed with the NRC Project Manager. These changes are in the Attachment.

There are not new commitments in this letter. Please contact Mr. J. A. Clark at (225) 381-4177, if you have any questions.

I declare under penalty of perjury that the foregoing is true and correct. Executed on July 16, 2015.

Sincerely, NTB/JAC/bmb

Attachment:

Revised Surveillance Requirement Numbering cc: Regional Administrator U. S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Blvd.

Arlington, TX 7601 1-4511 NRC Senior Resident Inspector P. 0. Box 1050 St. Francisville, LA 70775 U. S. Nuclear Regulatory Commission Attn: Mr. Alan Wang MS 0-881 One White Flint North 11555 Rockville Pike Rockville, MD 20852

RBG-47582 Page 3 of 3 Department of Environmental Quality Office of Environmental Compliance Radiological Emergency Planning and Response Section Ji Young Wiley P.O. Box 4312 Baton Rouge, LA 70821-4312 Public Utility Commission of Texas Attn: PUC Filing Clerk 1701 N. Congress Avenue P. 0. Box 13326 Austin, TX 78711-3326 RBFI-15-0 101 LAR 20 14-02 RBG-47582 Revised Surveillance Requirement Numbering Specification Page NotelChange SR 3.8.1.11 3.8-9 Subsection lettering/numbering SR 3.8.1.12 3.8-10 Subsection lettering/numbering SR 3.8.1.15 3.8-12 Subsection lettering/numbering SR 3.8.1.15 3.8-13 Relocation of SR 3.8.1.16 (no change to SR)

SR 3.8.1.19 3.8-14 Subsection lettering/numbering SR 3.8.1.20 3.8-15 Subsection lettering/numbering

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.11

1.

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

2.

This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG 1lC)

However, credit may be taken for unplanned events that satisfy this SR.

Verity on an actual or simulated loss of offsite power signal:

a.

De-energization of emergency buses;

b.

Load shedding from emergency buses for Divisions I and II; and

c.

DG auto-starts from standby condition and:

1.

energizes permanently connected loads in

< 10 seconds for DG 1A and DG lB and

  • <13 seconds for DG 1C,
2.

energizes auto-connected shutdown loads,

3.

maintains steady state voltage

i. for DG 1A and DG lB Ž_3740 V and

_<4368 V, ii. for DGlCŽ>374OV and _<4580 V

4.

maintains steady state frequency > 58.8 Hz and <_ 60.2 Hz, and

5.

supplies permanently connected and auto-connected shutdown loads for

>_ 5 minutes.

24 months (continued)

RIVER BEND 3.8-9 RIVE BED 38-9 Amendment No. 8112113 168, 187

AC Sources-Operating 3.8.1 SURVEILLANCEREQUIREMENTS_(continued)________

SURVEILLANCE FREQUENCY SR 3.8.1.12 NOTES---

1.

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

2.

This Surveillance shall not be performed in MODE 1 or2. (Not applicable to DG lC)

However, credit may be taken for unplanned events that satisfy this SR.

Verify on an actual or simulated Emergency Core 24 months Cooling System (ECCS) initiation signal each DG auto-starts from standby condition and;

a.

For DG 1C during the auto-start maintains voltage *_ 5400 V and frequency <_ 66.75 Hz;

b.

In _< 10 seconds for DG 1A and DG lB and

_< 13 seconds for DG 1lC after auto-start and during tests, achieves voltage > 3740 V and frequency > 58.8 Hz.

c.

Achieves steady state voltage

1.

ForDG 1A and DG 1BŽ>3740OVand

<__4368 V,

2.

For DG 1CŽ374OV and <4580V, and

3.

For DG 1A, 1B, and 1C, frequency of

>_ 58.8 and _< 60.2 Hz; and

d.

Operates for > 5 minutes.

(continued)

RIVER BEND I IVRBED3.8-10 Amendment No.v, 8112113 165*

  • ,, 168, 187

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.13 NOTE------

This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG 1 C)

However, credit may be taken for unplanned events that satisfy this SR.

Verify each DG's automatic trips are bypassed on an actual or simulated ECCS initiation signal except:

a.

Engine overspeed; and

b.

Generator differential current.

24 months SR 3.8.1.14

1.

Momentary transients outside the load and power factor ranges do not invalidate this test.

2.

Credit may be taken for unplanned events that satisfy this SR.

Verify each DG operating at a power factor < 0.9, operates for Ž__24 hours:

a.

For DG 1A and DG 1 B loaded > 3050 kW and *<3130 kW; and

b.

For DG 1C:

1.

For > 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded > 2750 kW and

< 2850 kW, and

2.

For the remaining hours of the test loaded >_2525 kW and < 2600 kW.

24 months (continued)

RIVER BEND RIVR BND3.8-11 Amendment No. 81 9112113 168, 187

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.15

1. This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated _> 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> loaded _> 3050 kW and
  • <3100 kW for DG 1Aand DG 18, and

> 2525 kW and _< 2600 for DG 1 C, or operating temperatures have stabilized, which ever is longer.

Momentary transients outside of the load range do not invalidate this test.

2.

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

Verify each DG starts and achieves:

1. In *<10 seconds for DG 1A and DG lB and

< 13 seconds for DG 1lC voltage Ž 3740 V and frequency _> 58.8 Hz, and

2.

Steady state voltage a)

For DG 1Aand DG1BŽ>_374OV and

< 4368 V b)

For DG1CŽ_>374OV and*-<458OVand c)

For DG 1A, 1B, and lC frequency

>_ 58.8 Hz and

  • 60.2 Hz.

24 months (continued)

RIVER BEND RIVR BND3.8-12 Amendment No. 81!211!33 165 168, 187

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.16 This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG lC) However, credit may be taken for unplanned events that satisfy this SR.

Verify each DG:

a.

Synchronizes with offsite power source while loaded with emergency loads upon a simulated restoration of offsite power;

b.

Transfers loads to offsite power source; and

c.

Returns to ready-to-load operation.

24 months SR 3.8.1.17 This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG 1 C) However, credit may be taken for unplanned events that satisfy this SR.

Verify, with a DG operating in test mode and connected to its bus, an actual or simulated ECCS initiation signal overrides the test mode by:

a.

Returning DG to ready-to-load operation; and

b.

Automatically energizing the emergency loads from offsite power.

24 months SR 3.8.1.18 NOTE...

This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG 1C) However, credit may be taken for unplanned events that satisfy this SR.

Verify sequence time is within + 10% of design for each 24 months load sequencer timer.

(continued)

RIVER BEND RIVR BND3.8-13 Amendment No. 81 95 121 133 168, 187

AC Sources-Operating 3.8.1 SURVEILLANCEREQUIREMENTS_(continued)________

SURVEILLANCE FREQUENCY SR 3.8.1.19

.......................-NOTES---

1.

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

2.

This Surveillance shall not be performed in MODE 1, 2, or 3. (Not applicable to DG lC)

However, credit may be taken for unplanned events that satisfy this SR.

Verify, on an actual or simulated loss of offsite power 24 months signal in conjunction with an actual or simulated ECCS initiation signal:

a.

De-energization of emergency buses;

b.

Load shedding from emergency buses for Divisions I and II; and

c.

DG auto-starts from standby condition and:

1.

energizes permanently connected loads in

< 10 seconds for DG 1A and DG lB and

_< 13 seconds for DG 1C,

2.

energizes auto-connected emergency

loads,
3.

achieves steady state voltage

i. for DG1A and DG 1B>374OV and

< 4368 V, ii. for DG 1lC _> 3740 V and < 4580 V,

4.

achieves steady state frequency_> 58.8 Hz and _* 60.2 Hz, and

5.

supplies permanently connected and auto-connected emergency loads for

_Ž 5 minutes.

(continued)

RIVER BEND 3.8-14 RIVE BED 3.-14 Amendment No. 81 1211!33 1689, 187

AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.20

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

Verify, when started simultaneously from standby 10 years condition, each DG achieves:

1.

In <*10 seconds for DG 1A and DG lB and

< 13 seconds for OG iC voltage > 3740 V and frequency _> 58.8 Hz, and

2. Steady state voltage a) ForDG1A and DG1B _>3740 Vand

_< 4368 V, b) For DG 10 >Ž3740 V and _< 4580 V, and c) ForDG 1A, 1B, and 1C frequency_>58.8 Hz and < 60.2 Hz.

RIVER BEND 3.8-15 RIVERBEND.8-15Amendment No. 8! !42! !65, 187

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