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Post Exam Comments, Resolution, and Technical References (Folder 1)
	ML14111A375
Person / Time
Site:	Indian Point
Issue date:	02/26/2014
From:	David Silk; Operations Branch I
To:	; Entergy Nuclear Operations
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ML13252A147	List: IR 05000247/2014301; ML14043A526; ML14080A500; ML14080A501; ML14080A502; ML14080A503; ML14080A504; ML14080A506; ML14080A507; ML14080A508; ML14091A692; ML14111A374; ML14111A375; ML14111A376;
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Enclosure 8 Comments Questions 1.5 and 21

Unit 2 NRC 2014 Exam Date 02110/2014 Question: 15 Consider the following plant conditions:

Loss of all AC power has occurred and is affectin!~ the entire site.

The Turbine Driven ABF pump is providing flow to the SGs.

A rapid cooldown has been commenced.

During the cooldown, what are the expected methods of control for the following:

(1) 21-24 SG Turbine Driven ABFP flow control valves (FCV-405A, B, C&D) and (2) 21-24 Atmospheric Steam Dumps (PCV-1134 throu~Jh 1137)

A. (1) Manual remote (CCR) control using nitrogen.

(2) Manual local control using nitrogen B. (1) Manual local control using nitrogen (2) Manual local control using nitrogen C. (1) Manual remote (CCR) control using nitrogen (2) Manual remote (CCR) control using nitrogen.

D. (1) Manual local control using nitrogen (2) Manual remote (CCR) control using nitrogen.

Pagel5of75 02119/2014

Question 15 The conditions of the question has a loss of all AC power on site with the turbine driven Auxiliary Boiler Feedwater Pump (#22) providing water to the steam generators and the cool down commenced. The conditions place the operator in 2-ECA*O.O, "Loss of All AC Power at step 17, sub-step b. RNO, as the normal instrument air supply to the Steam Generator Atmospheric Dump Valves would not be available. Step 17, sub-step b. RI'JO allows either:

o Manually operate atmospheric steam dumps from CCR by connecting N2 Backup Hose, OR o Locally operate atmospheric steam dumps by referring to 2-SOP-ESP-001, "Local Equipment Operatiion And Compensatory Actions." 2-SOP-ESP-001 Section 4.11 provides procedural direction to lineup nitrogen and operate the steam generator atmospheric dump valves from the local control panels. 2-SOP-ESP-001 Section 4.12 provides procedural direction to locally align nitrogen so that the steam generator atmospheric dump valves maybe operated from the control room.

In the question stem, the word "expected" is underlined. Since either remote operation from the control room or local operation are equally allowed by procedure, neither is expected more than the other.

The nitrogen backup to the turbine driven .Auxiliary Boiler FeE~dwater Pump flow control valves (FCV-405A thru 4050) automatically allows for continued remote operation from the control room.

Facility Position Both answers A and C are correct and are procedurally supported.

References:

2-ECA-0.0, "Loss of All AC Power

2-SOP-ESP-001, "Local Equipment Operation and Compensatory Actions"

Number:

Title:

Revision Number:

2-ECA-0.0 LOSS OF ALL AC POWER REV. 12 RESPONSE NOT OBTAINED 1---------.

16. Check CST Level - GREATER THAN Switch to city water supply:

2 FT

a. Open city water header isolation valve:

o FCV-1205A

b. Open AFW pump suction valves as necessary:

o PCV-11137 o PCV -11138 o PCV-11:39

CAUTION

o SG pressures should NOT be decreased to less than 200 psig to prevent

injection of accumulator nitrogen into the RCS.

o SG narrow range level should be maintained greater than 10% (27% FOR *

ADVERSE CONTAINMENT) in at least one intact SG. If level can NOT be maintained, SG depressurization should be stopped until level is

restored in at least one SG.

o The SGs should be depressurized at a rate sufficient to maintain a cooldown rate in the RCS cold legs near 100°F/hr. This will minimize RCS inventory loss while cooling the RCP seals in a controlled manner.

o PRZR level may be lost and reactor vessel upper head voiding may occur due to depressurization of SGs. Depressurization should NOT be stopped to prevent these occurrences.

17. Depressurize Intact SGs To 300 psiq:

This Step continued on the next page.

19 of 32

\~umber: ri t 1e: Revision Number:

2-ECA-0.0 LOSS OF ALL AC POWER REV. 12 ACTION/EXPECTED RESPONSE ~~OT OBTAINED 1--------,

a. Check SG narrow range levels - a. Perform the following:

GREATER THAN 10% (27% FOR ADVERSE CONTAINMENT) in at 1) Maintain maximum AFW flow least one SG until narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG.

o Preferentially RESTORE level to 22 OR 23 SG

2) Continue with Step 18.

WHEN narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG. THEN do Steps 17b through 17e.

b. Manually dump steam using SG b. Perform either of the atmospheric steam dumps to following by refering to maintain cooldown rate in RCS 2-SOP-ESP-001, LOCAL EQUIPMENT cold legs - LESS THAN 100°F/HR OPERATION AND COMPENSATORY ACTIONS: -

o Manually operate atmospheric steam dumps from CCR by connecting N2 Backup Hose.

- OR -

o Locally operate atmospheric steam dumps.

c. Check RCS cold leg c. Perform the following:

temperatures - GREATER THAN 325° F 1) Control SG atmospheric steam dumps to stop SG depressurization.

2) Go tc Step 18.

d. Check SG pressures - LESS THAN d. ContinuE with Step 18. WHEij 300 PSIG SG pressures decrease to less than 30G psi g, THEN do Step l7e.

e. Manually control SG e. Locally control SG atmospheric atmospheric steam dumps to steam dGmps to maintain SG maintain SG pressures at pressures at 300 psig:

300 psig o Refer to 2-SOP-ESP-001, LOCAL EQUIPMENT OPERATION AND COMPENSATORY ACTIONS for local operation as necessary.

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~Entergy Nuclear Northeast Procedure Use Is:

0 Continuous Control Copy: _ _ __

Effective Date: 8/ 7 J::1b I d...,

[] Reference

[] ~nformation Page 1 of 97 UIPMENT OP N TINGENCV A Approved By:

Team 2A Procedure Owner EDITORIAL REVISI<)N

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev:8 AND CONTINGENCY ACTIONS Page 2 of 97

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REVISION

SUMMARY

(Page 1 of 1) 1.0 REASON FOR REVISION 1.1 Incorporate feedback IP2-10515.

1.2 Incorporated operator comments for section 4.112, CCR Atmospheric Steam Dumps using backup nitrogen bottles.

2.0

SUMMARY

OF CHANGES 2.1 Revised abbreviation for Atmospheric valves in section 4.12, from "ADV" to "ATMOS" to conform to labels and tags in thH field, no rev bars") [Editorial change, step 4.6.9].

2.2 Revised Section 4.12 (Align ATMO for CCR Operation, using backup N2 ) per operator comments: Revised wording in step 4.12.1 Note (deleted 1st bullet "This section is available after the completion of EC>~~9868", added "Normally only one nitrogen bottle is aligned for service at the PCV-1134/PCV-1135 OR at PCV-1136/PCV-1137 control station at a time except when swapping bottles"). Added additional guidance to hook up and remove Nitrogen operation for the Atmospheric valves [Editorial change, step 4.15.13].

2.3 Added step 4.12.1 0, to provide additional guidance to swap N2 Bottles [Editorial change, step 4.6.11].

2.4 Corrected typo in Attachment 2, page 95: chan~Jed fuse from "F-27" to "F-21" (IP2-1 0515) [Editorial change, step 4.6.9].

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 ~ev: 8 AND CONTINGENCY ACTIONS Page 3 of 97 TABLE OF CONTENTS (Page 1 of 4)

Section Title Page 1.0 PURPOSE ....................................................................................................... 6 2.0 PRECAUTIONS AND LIMITATIONS ............................................................... 6 3.0 PREREQUISITES ............................................................................................ 7 4.0 PROCEDURE .................................................................................................. 8 4.1 Start 21 (motor driven) Auxiliary Boiler Feed Pump (ABFP) ................. 8 4.2 Start 23 (motor driven) Auxiliary Boiler Feed Pump (ABFP) ................. 9 4.3 Start 22 (turbine driven) Auxiliary Boiler Feed Pump (ABFP) ............. 10 4.4 RESET OF 22 AFP (TURBINE DRIVEN) ............................................ 13 4.5 Re-open PCV-1310A or 1310B, (22 A.BFP Steam Supply Press Control VLVs) .................................................................................... 14 4.6 Place ABFP FCVs in manual .............................................................. 16

4. 7 Return ABFP FCVs to automatic ....................................................... 18 4.8 Feed SGs from Chemical Feed via Fire Header - No pumper truck .................................................................................................... 20 4.9 Feed SGs from Chemical Feed via Fire Header- With pumper truck .................................................................................................... 21 4.10 Close Main Steam Isolation Valves (MSIV) ........................................ 23 4.11 Operate Atmospheric Steam Dumps .................................................. 24 4.12 CCR Atmospheric Steam Dumps (ATMOs) Operation using Backup N2 Bottles (Reference 5.2.8.) ................................................. 32 4.13 Place 21 ABFP on Safe Shutdown Power Supply (12FD3) ............... .40 4.14 Start 21 ABFP from 12FD3 (Unit One 440V Substation) ................... .40 4.15 Place 23 CCW Pump on Safe Shutdown Power Supply (12FD3) ...... .41 4.16 Start 23 CCW Pump from 12FD3 (Unit One 440V Substation) ........... 42 4.17 Place 23 Charging Pump on Safe Shutdown Power Supply (12FD3) ............................................................................................... 42 4.18 Start 23 Charging Pump from 12FD3 (Unit One 440V Substation) ..... 43 4.19 Place 21 Sl Pump on Safe Shutdown Power Supply (12FD3) ............ 43

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 24 of 97

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4.11 Operate Atmospheric Steam Dumps CAUTION

21 and 22 steam generators (SGs) have reliable backup wide range level indication at the Safe Shutdown Panel. If 23 or 24 SG level indication is suspected of being degraded (Example: due to fire or electrical fault, etc.) then 23 or 24 SGs should NOT be steamed unless both 21 AND 22 SGs are unavailable.

If SG differential pressure between SGs is greater than 155 psid, then a Safety Injection signal will be initiated.

NOTE Nitrogen header is supplied from bottles located next to the auxiliary feedwater regulating valves or from backup N2 bottles via quick disconnects located at the Atmospheric local control panels .

4.11.1 To align SG Atmospheric Dump Valve for a specific SG GO TO:

21 SG step 4.11.2

22 SG step 4.11.4

23 SG step 4.11.6

24 SG step 4.11.8 4.11.2 ALIGN PCV-1134, (STM Gen 21 Atmospheric Dump) for local operation as follows:

4.11.2.1 VERIFY MS-3A, (PCV-111 ~:4 Inlet Stop Main Stm Line 21)

OPEN.

4.11.2.2 CLOSE IA-1202, (PCV-11 :34 Positioner Instrument Air Stop).

4.11.2.3 VERIFY PRV-5608 (Nitrogen Regulator to PCV-1134) is BACKED OUT FULLY (counter-clockwise).

4.11.2.4 OPEN SGN-500 (PCV-"1134 Local Control Station Nitrogen Supply Stop).

4.11.2.5 SLOWLY OPEN SGN-508 (Nitrogen Stop Valve to PCV-11 ~34 Diaphragm).

4.11.2.6 CLOSE IA-1008, (PCV-11~341nstrument Air Control Panel Vent).

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 25 of 97

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4.11.2.7 IF Back-up N2 is requirE!d, CONNECT back-up N2 bottle as follows:

CLOSE SGN-520, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottle isolation.

OPEN N-853, Seconda.ry N2 Bottle Supply Stop (downstream of bottle regulator).

CHECK N2 bottle regulator set to 85 psig.

CAUTION Use of valve IA-1008 (PCV-11341nstrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preseNe N2 supply. Valve IA-1008 should not be left open to maintain pressure.

4.11.2.8 OPENn-HROTTLE/CLOSE PCV-1134 (STM Gen 21 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by slowly increasing(clockwise) Nitrogen pressure using PRV-5608 (Nitrogen Regulator to PCV-1134)

THI~OTTLE in CLOSE direction by decreasing (counter clockwise) Nitrogen pressure using PRV-5608 (Nitrogen Regulator to PCV-1134)

!E necessary to assist in throttling Closed THEN VENT Nitro~Jen pressure with IA-1 008 (PCV-1134, Instrument Air Control Panel Vent).

4.11.3 RESTORE PCV-1134, (STM Gen 21 Atmospheric Dump) alignment for normal operation as follows:

4.11.3.1 If Back-up N2 bottle is aligned, RESTORE as follows:

CLOSE N2 bottle isolation

CLOSE N-853, Secondary N2 Bottle Supply Stop (downstream of bottle regulator)

CLOSE SGN-500, (PCV-1134 Local Control Station Nitrogen Supply Stop)

DISCONNECT quick disconnect

LOCAL EQUIPMENT OPER~AION: No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS

Page 26 of 97

J 4.11.3.2 CLOSE SGN-500, (PCV-1134 Local Control Station Nitrogen Supply Stop).

4.11.3.3 OPEN IA-1 008, (PCV-1134 Instrument Air Control Panel Vent).

4.11.3.4 OPEN IA-1202, (PCV-1134 Positioner Instrument Air Stop).

4.11.3.5 CLOSE SGN-508, (Nitrog~m Stop Valve to PCV-1134 Diaphragm).

4.11.3.6 CLOSE IA-1008, (PCV-11:34 Instrument Air Control Panel Vent).

4.11.3.7 OPEN SGN-520, Primary I\J2 Supply Isolation.

4.11.4 ALIGN PCV-1135, (STM Gen 22 Atmospheric Dump) for local operation as follows:

4.11.4.1 VERIFY MS-3B, (PCV- '11 ~~5 Inlet Stop Main Stm Line 22)

OPEN.

4.11.4.2 CLOSE IA-1203, (PCV-11 :35 Positioner Instrument Air Stop).

4.11.4.3 VERIFY PRV-561 0 (Nitrogen Regulator to PCV-1135) is BACKED OUT FULLY (counter-clockwise).

4.11.4.4 OPEN SGN-501, (PCV-1135 Local Control Station Nitrogen Supply Stop).

4.11.4.5 SLOWLY OPEN SGN-509 (Nitrogen Stop Valve to PCV-1135 Diaphragm).

4.11.4.6 CLOSE IA-1 009, (PCV-11 :35 Instrument Air Control Panel Vent).

4.11.4.7 IF Back-up N2 is required, :rHEN CONNECT back-up N2 bottle as follows:

CLOSE SGN-520, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottiEt isolation.

OPEN N-853, Secondary N2 Bottle Supply Stop (downstream of bottile n3gulator).

CHECK N2 bottle re~Julator set to 85 psig.

LOCAL EQUIPMENT OPER~AION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 27 of 97

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CAUTION Use of valve IA-1 009 (PCV-1135 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2 supply. Valve IA-1009 should NOT be left open to maintain pressure.

4.11.4.8 OPEN/THROTTLE/CLOSE PCV-1135 (STM Gen 22 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by slowly increasing (clockwise) Nitrogem pressure using PRV-5610, (Nitrogen Regulator to PCV-1135).

THROTTLE in CLOSED direction by decreasing (counter clockwise~) Nitrogen pressure using PRV -5610 (Nitrogen Regulator to PCV-1135)

IF necessary to assist in throttling Closed THEN VENT Nitro!Jen pressure with IA-1009 (PCV-11 as Instrument A1ir Control Panel Vent).

4.11.5 RESTORE PCV-1135, (STM Gen 2:2 Atmospheric Dump) alignment for normal operation as follows:

4.11.5.1 IF Back-up N2 bottle is aligned, THEN RESTORE as follows:

CLOSE N2 bottle isolation.

CLOSE N-853, Secondary N2 Bottle Supply Stop (downstream of bottle regulator).

CLOSE SGN-501, (PCV-1135 Local Control Station Nitro!Jen Supply Stop).

DISCONNECT quick disconnect.

4.11.5.2 CLOSE SGN-501, (PCV-1135 Local Control Station Nitrogen Supply Stop).

4.11.5.3 OPEN IA-1 009, (PCV-1*13s Instrument Air Control Panel Vent).

4.11.5.4 OPEN IA-1203, (PCV-1*13~> Positioner Instrument Air Stop).

4.11.5.5 CLOSE SGN-509 (Nitro1gen Stop Valve to PCV-1135 Diaphragm).

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 28 of 97

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4.11.5.6 CLOSE IA-1 009, (PCV-11 :35 Instrument Air Control Panel Vent).

4.11.5.7 OPEN SGN-520, Primary 1\12 Supply Isolation.

4.11.6 ALIGN PCV-1136, (STM Gen 23 Atmospheric Dump) for local operation as follows:

4.11.6.1 VERIFY MS-3C, (PCV-*11 (16 Inlet Stop Main Stm Line 23)

OPEN.

4.11.6.2 CLOSE IA-1204, (PCV-11 :36 Positioner Instrument Air Stop).

4.11.6.3 VERIFY PRV-5612, (Nitro~)en Regulator to PCV-1136) is BACKED OUT FULLY. (Counter-clockwise) 4.11.6.4 OPEN SGN-502, (PCV-11 :36 Local Control Station Nitrogen Supply Stop).

4.11.6.5 SLOWLY OPEN SGN-51 0 (Nitrogen Stop Valve to PCV-1136 Diaphragm).

4.11.6.6 CLOSE IA-1 010, (PCV-11 ~36 Nitrogen Supply Vent Stop).

4.11.6.7 IF Back-up N2 is required, THEN CONNECT back-up N2 bottle as follows:

CLOSE SGN-521, Primary N2 Supply Isolation

CONNECT quick disconnect AND OPEN N2 bottle isolation

OPEN N-851 , Secondary N2 Bottle Supply Stop (downstream of bottle n3gulator)

CHECK N2 bottle re9ulator set to 85 psig

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LOCAL EQUIPMENT OPERATION o: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS age 29 of 97 L---------------------------------------

CAUTION Use of valve IA-1 010 (PCV-1136 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2 supply. Valve IA-1 010 should NOT be left open to maintain pressure.

4.11.6.8 OPEN!T'HROTTLEICLOSE PCV-1136, (STM Gen 23 Atmospheric Dump) as follows:

THROTTLE in OPIEN direction by slowly increasing (clockwise) Nitrogen pressure using PRV-5612, (Nitrogen Regulator to PCV-1136)

THROTTLE in CLOSED direction by decreasing (counter clockwise) Nitrogen pressure using PRV-5612, (Nitrogen Regulator to PCV-1136)

IF necessary to assist in throttling Closed THEN VENT Nitro!~en pressure with IA-1010 (PCV-1136 Instrument Air Control Panel Vent) 4.11. 7 RESTORE PCV -1136, (STM Gen 2:3 Atmospheric Dump) alignment for normal operation as follows:

4.11.7.1 IF Back-up N2 bottle is ali9ned, THEN RESTORE as follows:

CLOSE N2 bottle isolation

CLOSE N-851, Secondary N2 Bottle Supply Stop (downstream of bottle regulator)

CLOSE SGN-502, (PC'I-1136 Local Control Station Nitro1~en Supply Stop)

DISCONNECT quick: disconnect 4.11.7.2 CLOSE SGN-502, (PCV-1136 Local Control Station Nitrogen Supply Stop).

4.11.7.3 OPEN IA-1010, (PCV-1.13Ei Nitrogen Supply Vent Stop).

4.11.7.4 OPEN IA-1204, (PCV-1.136 Positioner Instrument Air Stop).

4.11.7.5 CLOSE SGN-510 (Nitro1~en Stop Valve to PCV-1136 Diaphragm).

4.11 .7.6 CLOSE IA-1010, (PCV-*11~:6 Nitrogen Supply Vent Stop).

4.11.7.7 OPEN SGN-521, Primary N2 Supply Isolation.

LOCAL EQUIPMENT OPERA;uiON No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 30 of 97

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4.11.8 ALIGN PCV-1137, (STM Gen 24 Atmospheric Dump).for local operation as follows:

4.11.8.1 VERIFY MS-3D, (PCV-*11~17 Inlet Stop Main Stm Line 24)

OPEN.

4.11.8.2 CLOSE IA-1205, (PCV-11:37 Positioner Instrument Air Stop).

4.11.8.3 VERIFY PRV-5614, (Nit:ronen Regulator Valve to PCV-1137) is BACKED OUT FULLY (counter-clockwise).

4.11.8.4 OPEN SGN-503 (PCV- *11 ~~7 Local Control Station Nitrogen Supply Stop).

4.11.8.5 SLOWLY OPEN SGN-511, (Nitrogen Stop Valve to PCV-1137 Diaphragm).

4.11.8.6 CLOSE IA-1 011 (PCV-1137 Nitrogen Supply Vent Stop).

4.11.8.7 IF Back-up N2 is required, THEN CONNECT back-*up N2 bottle as follows:

CLOSE SGN-521, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottle isolation.

OPEN N-851, Secondary N2 Bottle Supply Stop (downstream of bottle r*egulator).

CHECK N2 bottle regulator set to 85 psig.

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LOCAL EQUIPMENT OPERATION o: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS age 31 of 97

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CAUTION Use of valve IA-1 011 (PCV -1137 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2* supply. Valve IA-1 011 should NOT be left open to maintain pressure.

4.11.8.8 OPEN/THROTTLE/CLOSE PCV-1137, (STM Gen 24 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by slowly increasing (clockwise) NitrogEm pressure using PRV-5614, (Nitrogen Regulator Valve to PCV-1137)

THROTTLE in CLOSED direction by decreasing (counter clockwise) Nitrogen pressure using PRV-5614, (Nitrogen Regulator Valve to PCV-1137)

IF necessary to assist in throttling Closed THEN VENT Nitro~Jen pressure with IA-1011 (PCV-1137 {Instrument Air Control Panel Vent) 4.11.9 RESTORE PCV-1137, (STM Gen 24 Atmospheric Dump) alignment for normal operation as follows:

4.11.9.1 IF Back-up N2 bottle is ali~Jned, RESTORE as follows:

CLOSE N2 bottle isolation.

CLOSE N-851, Secondary N2 Bottle Supply Stop (downstream of bottle regulator).

CLOSE SGN-503, (PC\1-1137 Local Control Station Nitrogen Supply Stop).

DISCONNECT quick disconnect.

4.11.9.2 CLOSE SGN-503 (PCV-1137 Local Control Station Nitrogen Supply Stop).

4.11.9.3 OPEN IA-1011 (PCV-1137 Nitrogen Supply Vent Stop).

4.11.9.4 OPEN IA-1205, (PCV-113~ 7 Positioner Instrument Air Stop).

4.11.9.5 CLOSE SGN-511, (Nitrogen Stop Valve to PCV-1137 Diaphragm).

4.11 .9.6 CLOSE IA-1 011 (PCV-1137 Nitrogen Supply Vent Stop).

4.11.9.7 OPEN SGN-521, Primary N2 Supply Isolation.

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 32 of 97

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4.12 CCR Atmospheric Steam Dumps (ATMOsl.Qperation using Backup Ng Bottles (Reference 5.2.8.)

NOTE

Normally only one nitrogen bottle is aligned for service at the PCV-1134/PCV-1135 (OR at PCV-1136/PCV-1137) control station at a t1imo except when swapping bottles.

After aligning Nitrogen bottle(s) to the ATMOs, monitor N2 bottle pressure as necessary to ensure adequate volume to allow continuous ATMOs operation AND to place spare N2 bottle in service when pressure in the in service bottle reaches 500 psig. Replace the N2 bottle removed from servicH as necessary, since ATMOs tail CLOSED.

4.12.1 To ALIGN a specific Atmospheric Steam Dump (ATMOs) GO TO:

Step 4.12.2 for 21 ATMO

Step4.12.4 for22ATMO

Step 4.12.6 for 23 ATMO

Step 4.12.8 for 24 ATMO 4.12.2 IF PCV-1134 {21 ATMO) needs to be operated from the CCR THEN ALIGN backup N2 Bottle Supply as follows:

4.12.2.1 VERIFY MS-3A, (PCV-1134 Inlet Stop Main Steam Line 21) is OPEN.

4.12.2.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-5:22 I SGN-524.

4.12.2.3 OPEN both Nitrogen bo1tles isolation valves.

4.12.2.4 OPEN one of the following valves:

N-85:3, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel

N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-113t5 Panel 4.12.2.5 VERIFY both of the following regulators are set for 85 psig.

a) N-850, Secondary 1\12 Bottle Supply Reg to PCV -1134/PCV -1135 Panel.

b) N-854, Secondary 1\12 Bottle Supply Reg to PCV -1134/PCV -11 :35 Panel.

LOCAL EQUIPMENT OPER;[]AION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 33 of 97

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4.12.2.6 CLOSE IA-806, 21 S/G ATMO Relief PCV-11341A Stop.

4.12.2.7 OPEN SGN-522, CCR !~emote Backup Nitrogen Inlet Stop to 21 ATMO.

4.12.2.8 NOTIFY CCR, N2 Botti' Supply is aligned to PCV-1134 (21 SG ATMO).

4.12.2.9 CCR operator to POSITION PCV-1134 (21 SG ATMO) as directed.

4.12.2.10 NPO to MONITOR bottle pressure AND SWAP to alternate bottle per step 4.12.1 0 whHn pressure reaches 500 psig.

4.12.3 lE PCV-1134, (21 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the folllowing:

4.12.3.1 OPEN IA-806, 21 S/G .A.TMO Relief PCV -1134 lA Stop.

4.12.3.2 CLOSE SGN-522, CCR Remote Backup Nitrogen Inlet Stop (21 ATMO).

4.12.3.3 NOTIFY CCR; PCV-1134 (21 ATMO) N2 Bottle Supply is isolated AND Instrument Air has been restored.

4.12.3.4 IF nitrogen is NOT needed for PCV-1135 (22 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitro~Jen bottles isolation valves.

b) VERIFY the following are FULLY BACKED OUT:

1) N-850, Secondary N2 Bottle Supply Reg to PCV -1134/PCV -1135 Panel.

2) N-854, Secondary N2 Bottle Supply RHg to PCV-1134/PCV-1135 Panel.

c) Carefully DISCONNECT both quick disconnects ANQ INSTALL the dust covers.

d) VERIFY the following valves are Closed:

1) N-853, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV -1135 Panel.

2) N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

LOCAL EQUIPMENT OPERATION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 34 of 97

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4.12.4 IF PCV-1135, (22 ATMO) needs to be operated from the CCR THEN ALIGN backup N2 Bottle Supply as follows:

4.12.4.1 VERIFY MS-3B, (PCV-'112:5 Inlet Stop Main Steam Line 22) is OPEN.

4.12.4.2 CONNECT both nitrogen bottle quick disconnects to the fittings upstream of SGN-522 I SGN-524.

4.12.4.3 OPEN both Nitrogen bottles isolation valves.

4.12.4.4 OPEN one of the following valves:

N-853, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV- *11 ~~5 Panel.

N-855, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV- *11 ~~5 Panel.

4.12.4.5 VERIFY both of the following regulators are set for 85 psig.

a) N-850, Secondary N2 Bottle Supply Reg to PCV-1134/PCV -1135 Panel.

b) N-854, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

4.12.4.6 CLOSE iA-807, 22 S/G ATMO Relief PCV-1135 lA Stop.

4.12.4.7 OPEN SGN-524, CCR Remote Backup Nitrogen Inlet Stop to 22 ATMO.

4.12.4.8 NOTIFY CCR, N2 Bottle Supply is aligned to PCV-1135 (22 ATMO).

4.12.4.9 CCR operator to POSITION PCV-1135 (22 ATMO) as directed.

4.12.4.1 0 NPO to MONITOR bottl~:! pressure AND SWAP to alternate bottle per step 4.12.1 0 whE!n pressure reaches 500 psig.

4.12.5 IF PCV-1135, (22 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the following:

4.12.5.1 OPEN IA-807, 22 S/G ATMOS Relief PCV-1135 lA Stop.

4.12.5.2 CLOSE SGN-524, CCR Relmote Backup Nitrogen Inlet Stop (22 ATMO).

LOCAL EQUIPMENT OPERA~ No: 2-SOP-ESP-001 ~

AND CONTINGENCY ACTI~ Page 35 of 97 ~

4.12.5.3 NOTIFY CCR; PCV -112.5 (22 ATMO) N2 Bottle Supply is isolated AND Instrument Air has been restored.

4.12.5.4 IF nitrogen is NOT needed for PCV-1134 (21 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitro~Jen bottles isolation valves.

b) VERIFY the following are FULLY BACKED OUT.

1) N-850, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

2) N-854, Seconda!y N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

c) Carefully DISCONNECT both quick disconnects ANQ INSTALL the dust covers.

d) VERIFY the following valves are Closed:

1) N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

2) N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

4.12.6 !E PCV-1136, (23 ATMO) needs to be operated from the CCR, THEN ALIGN backup N2 Bottle Supply as follows:

4.12.6.1 VERIFY MS-3C, (PCV-1136 Inlet Stop Main Steam Line 23) is OPEN.

4.12.6.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-5~~6 I SGN-528.

4.12.6.3 OPEN both Nitrogen bottles isolation valves.

4.12.6.4 OPEN one of the following valves:

N-851, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel

N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel

LOCAL EQUIPMENT OPERATION No: 2-SOP-ESP-001 AND CONTINGENCY ACTIONS Page 36 of 97

~-----------------------------------~*

4.12.6.5 VERIFY both of the following regulators are set for 85 psig.

a) N-852, Secondary N~~ Bottle Supply Reg to PCV-1136/PCV-1137 Panel.

b) N-856, Secondary N~~ Bottle Supply Reg to PCV-11 (~6/PCV -1137 Panel.

4.12.6.6 CLOSE IA-808, 23 S/G ATMOS Relief PCV-1135 lA Stop.

4.12.6.7 OPEN SGN-526, CCR l=lernote Backup Nitrogen Inlet Stop to 23 ATMO.

4.12.6.8 NOTIFY CCR, N2 Bottle Supply is aligned to PCV-1136 (23 ATMO).

4.12.6.9 CCR opE~rator to POSITIOI\J PCV-1136 (23 SG ATMO) as directed.

4.12.6.1 0 NPO to MONITOR bottl1e pressure AND SWAP to alternate bottle per step 4.12.1 0 when pressure reaches 500 psi g.

4.12.7 IF PCV-1136, (23 ATMO) needs to be removed from N2 Backup operation, THEN PERFORM the following:

4.12.7.1 OPEN IA-808, 23 S/G ATMOS Relief PCV-1136 lA Stop.

4.12.7.2 CLOSE SGN-526, CCR RE3mote Backup Nitrogen Inlet Stop (23 ATMO).

4.12.7.3 NOTIFY CCR; PCV-1136 (23 ATMO) N2 Bottle Supply is isolated AND Instrument Air has been restored.

4.12.7.4 IF nitrogen is NOT needed for PCV-1137 (24 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitro9en bottles isolation valves.

b) VEFiiFY the following are FULLY BACKED OUT.

1) N-852, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-1137 Panel 2} N-856, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-1137 Panel c) Carefully DISCONNECT both quick disconnects AND INSTALL the dust covers.

LOCAL EQUIPMENT OPERAllON[ No: 2-SOP-ESP-001 ~

AND CONTINGENCY ACTI~ Page 37 of 97 ~

d) VERIFY the following are Closed:

1) N-851, Secondary Nitrogen Bottle Supply Stop to PCV -1136/PCV -1137 Panel.

2) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

4.12.8 IF PCV-1137 (24 ATMO) needs to be operated from the CCR, THEN ALIGN backup N2 Bottle Supply as follows:

4.12.8.1 VERIFY MS-30, (PCV-11 ~:7 Inlet Stop Main Steam Line 24) is OPEN.

4.12.8.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-526 I SGN-528.

4.12.8.3 OPEN both Nitrogen bolttles isolation valves.

4.12.8.4 OPEN one of the following valves:

N-851 , Secondary l\litrogen Bottle Supply Stop to PCV-1136/PCV-113.7 Panel

N.. 857, Secondary t--litrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel 4.12.8.5 VERIFY both of the following regulators are set for 85 psig.

a) N-852, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-1137 Panel.

b) N-856, Secondary N2 Bottle Supply Reg to PCV -1136/PCV -11137' Panel.

4.12.8.6 CLOSE IA-809, 24 S/G ATMO Relief PCV-1137 lA Stop.

4.12.8.7 OPEN SGN-528, CCR Remote Backup Nitrogen Inlet Stop to 24 ATMO.

4.12.8.8 NOTIFY CCR, N2 Bottle Supply is aligned to PCV-1137 (24 ATMO).

4.12.8.9 CCR operator to POSITION PCV-1137 (24 ATMO) as directed.

4.12.8.1 0 NPO to MONITOR bottlE~ pressure AND SWAP to alternate bottle per step 4.12.1 0 when pressure reaches 500 psi g.

~

LOCAL EQUIPMENT OPERATION o: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS age 38 of 97

~--------------------------------------

4.12.9 IF PCV-1137 (24 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the following:

4.12.9.1 OPEN IA-809, 24 S/G ATMOS Relief PCV-1137 lA Stop.

4.12.9.2 CLOSE SGN-528, CCFI Remote Backup Nitrogen Inlet Stop (24 ATMO).

4.12.9.3 NOTIFY CCR; PCV-11:37 (24 ATMO) N2 Bottle Supply is isolated AND Instrument Air 11as been restored.

4.12.9.4 IF nitrogen is NOT needecl for PCV-1136 (23 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitrogen bottles isolation valves.

b) VERIFY the following are FULLY BACKED OUT.

1) N-852, Seconda,ry N2 Bottle Supply Reg to PCV-1136/PCV.-1137 Panel.

2) N-856, Secondary N2 Bottle Supply Reg to PCV-1136/PCV.-1137 Panel.

c) Carefully DISCONNECT both quick disconnects AND INSTALL the dUist covers.

d) VERIFY the following are Closed:

1) N-851, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-*1137 Panel.

2) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel 4.12.1 0 WHEN pressure in a backup nitrogEm bottle is 500 psig THEN SWAP applicable nitrogen botfi,es as follows:

4.12.1 0.1 OPEN the following to place a spare N2 Bottle in service:

a) N-851 , Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

b) N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

c) N-855, Secondary Nitroge.-; Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

LOCAL EQUIPMENT OPERA~ION No: 2-SOP-ESP-001 Rev: 8 AND CONTINGENCY ACTIONS Page 39 of 97

~

d) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

4.12.1 0.2 CLOSE the applicable valves for the N2 Bottle with the low pressure!:

a) N-851 , Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

b) N-853, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV -1135 Panel.

c) N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

d) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

4.12.1 0.3 CLOSE the isolation valve on the nitrogen bottle removed from ser.tice 4.12.10.4 REMOVE the regulator, valve and hose assembly from the bottle and remove the bottle.

4.12.10.5 INSTALL a new nitrogen bottle AND RE-INSTALLL the regulator, valve and hose assembly.

4.12.1 0.6 OPEN the nitrogen bottle isolation valve.

eeae

~Entergy Procedure Use Is: Control Copy: _ __

Nuclear Northeast ~ Continuous

[] Reference Effective Date: J/:;._ji.:A::::>/.3

[J Information Page 1 of 97

\ ~.. ....'. . --;,....'

2-sop:~~ldif~~vtsi~~ 9

~: --< i',;</ ';~-/*' "

LOCAfl~~UIPMENT OPIERj_TrPN AND"CO~NTINGENCY AtCTIONS '_' );'

.*.~::*,~,* ..' *.*:*~~-~/

Approved By:

I ,)l? I!_

RPO or Designee: Print N Li I Date Team 2A Procedure Owner EDITORIAL REVISUJN

LOCAL EQUIPMENT OPERATION lo: 2-SOP-ESP-001 Rev:9 AND CONTINGENCY ACTIONS

~---------------------------------

H 'age 2 of 97 REVISION

SUMMARY

(Page1of1) 1.0 REASON FOR REVISION 1.1 Incorporate feedback IP2-1 0845.

2.0

SUMMARY

OF CHANGES 2.1 Deleted Hydrant #18 from Step 4.49.2. This hydrant has been removed from service via EC-11314. [Editorial 4.6.12]

2.2 Formatted per IP-SMM-AD-1 04. [Editorial 4.6 . 14]

LOCAL EQUIPMENT OPERATION io: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

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R 'age 3 of 97 TABLE OF CONTENT'S (Page 1 of 4)

Section Title Page 1.0 PURPOSE ....................................................................................................... 7 2.0 PRECAUTIONS AND LIMITATIONS ............................................................... 7 3.0 PREREQUISITES ........................................................................................... 8 4.0 PROCEDURE .................................................................................................. 9 4.1 Start 21 (motor driven) Auxiliary BoiiE~r Feed Pump (ABFP) ................. 9 4.2 Start 23 (motor driven) Auxiliary Boiler Feed Pump (ABFP) ............... 10 4.3 Start 22 (turbine driven) Auxiliary Boiler Feed Pump (ABFP) ............. 11 4.4 RESET OF 22 AFP (TURBINE DRIVEN) ........................................... 14 4.5 Re-open PCV-1310A or 1310B, (22 ABFP Steam Supply Press Control VLVs) ..................................................................................... 15 4.6 Place ABFP FCVs in manual. ............................................................. 17 4.7 Return ABFP FCVs to automatic ........................................................ 19 4.8 Feed SGs from Chemical Feed via Fire Header - NO pumper 1 truck ..................................................................................................... 21 4.9 Feed SGs from Chemical Feed via Fiire Header- With pumper truck .................................................................................................... 22 4.10 Close Main Steam Isolation Valves (MSIV) ......................................... 23 4.11 Operate Atmospheric Steam Dumps .................................................. 25 4.12 CCR Atmospheric Steam Dumps (ATMOs) Operation using Backup N2 Bottles (Reference 5.2.8.) .................................................. 33 4.13 Place 21 ABFP on Safe Shutdown PowBr Supply (12FD3) ............... .41 4.14 Start 21 ABFP from 1:2FD3 (Unit One* 440V Substation) .................... 41 4.15 Place 23 CCW Pump on Safe Shutdown Power Supply (12FD3) ....... 42 4.16 Start 23 CCW Pump from 12FD3 (Unit One 440V Substation) ........... 43 4.17 Place 23 Charging Pump on Safe ShiUtdown Power Supply (12FD3) ................................................................................................ 43 4.18 Start 23 Charging Pump from 12FD3 (Unit One 440V Substation) .... .44 4.19 Place 21 Sl Pump on Safe Shutdown Power Supply (12FD3) ............ 44

LOCAL EQUIPMENT OPERATION E;1o: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS ~'age 25 of 97

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4.11 Operate Atmospheric Steam Dumps CAUTION

21 and 22 steam generators (SGs) have reliable backup wide range level indication at the Safe Shutdown Panel. If 23 or 24 SG level indication is suspected of being degraded (Example: due to fire or electrical fault, etc.) then 23 or 24 SGs should NOT be steamed unless both 21 AND 22 SGs are unavailable.

If SG differential pressure between SGs is greater than 155 psid, then a Safety Injection signal will be initiated.

NOTE Nitrogen header is supplied from bottles located next to the auxiliary feedwater regulating valves or from backup N2 bottles via quick disconnects located at the Atmospheric local control panels .

4.11.1 To align SG Atmospheric Dump Valve! for a specific SG GO TO:

21 SG step 4.11.2

22 SG step 4.11.4

23 SG step 4.11.6

24 SG step 4.11.8 4.11.2 ALIGN PCV-1134, (STM Gen 21 AJtmospheric Dump) for local operation as follows:

4.11.2.1 VERIFY MS-3A, (PCV-*11 ~14 Inlet Stop Main Stm Line 21)

OPEN.

4.11.2.2 CLOSE IA-1202, (PCV-11:34 Positioner Instrument Air Stop).

4.11.2.3 VERIFY PRV-5608 (Nitrogen Regulator to PCV-1134) is BACKED OUT FULLY (counter-clockwise).

4.11.2.4 OPEN SGN-500 (PCV-'11 ~14 Local Control Station Nitrogen Supply Stop).

4.11.2.5 SLOWLY OPEN SGN-508 (Nitrogen Stop Valve to PCV-11~~4 Diaphragm).

4.11.2.6 CLOSE IA-1 008, (PCV-11 ~~4 Instrument Air Control Panel Vent).

LOCAL EQUIPMENT OPERATION lo: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

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H 'age 26 of 97 4.11.2.7 IF Back-up N2 is requin:ld, CONNECT back-up N2 bottle as follows:

CLOSE SGN-520, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottle isolation.

OPEN N-853, Secondary N2 Bottle Supply Stop (downstream of bottle 1regulator).

CHECK N2 bottle regulator set to 85 psig.

CAUTION Use of valve IA-1008 (PCV-1134 Instrument Air Control Panel Vent) to THROTTLE CLOSED the atmospheric should be minimized to preserve N2 supply. Valve IA-1008 should not be left open to maintain pressure.

4.11.2.8 OPENn-HROTTLEICLOSE PCV-1134 (STM Gen 21 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by slowly increasing(clockwise) Nitrogen pressure using PRV-5608 (Nitrogen Re~gulator to PCV-1134)

THROTTLE in CLOSIE direction by decreasing (counter clockwise) Nitrogen pressure using PRV-5608 (Nitrogen Regulator to PCV-1134)

IF necessary to assist in THROTTLING CLOSED THEN VENT Nitro9en pressure with IA-1 008 (PCV-1134, Instrument Air Control Panel Vent).

4.11.3 RESTORE PCV-11:34, (STM Gen 21 Atmospheric Dump) alignment for normal operation as follows:

4.11.3.1 IF Back-up N2 bottle is aligned, THEN RESTORE as follows:

CLOSE N2 bottle isol ation 1

CLOSE N-853, Secondary N2 Bottle Supply Stop (downstream of bottlt3 mgulator)

CLOSE SGN-500, (PCV-1134 Local Control Station Nitrogen Supply Stop)

DISCONNECT quick di~;connect

LOCAL EQUIPMENT OPERATION ~~o: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS Ji>age 27 of 97

~-----------------------------------

4.11.3.2 CLOSE SGN-500, (PCV-1134 Local Control Station Nitrogen Supply Stop).

4.11.3.3 OPEN IA-1008, (PCV-*t1~341nstrument Air Control Panel Vent).

4.11.3.4 OPEN IA-1202, (PCV-*11~34 Positioner Instrument Air Stop).

4.11.3.5 CLOSE SGN-508, (Nitrogen Stop Valve to PCV-1134 Diaphragm).

4.11.3.6 CLOSE IA-1 008, (PCV-11134 Instrument Air Control Panel Vent).

4.11.3.7 OPEN SGN-520, Primary N2 Supply Isolation.

4.11.4 ALIGN PCV-1135, (STM Gen 22 Atmospheric Dump) for local operation as follows:

4.11.4.1 VERIFY MS-3B, (PCV-1135 Inlet Stop Main Stm Line 22)

OPEN.

4.11.4.2 CLOSE IA-1203, (PCV.-1135 Positioner Instrument Air Stop).

4.11.4.3 VERIFY PRV-561 0 (NitrO!~en Regulator to PCV-1135) is BACKED OUT FULLY (counter-clockwise).

4.11.4.4 OPEN SGN-501, (PCV-1135 Local Control Station Nitrogen Supply Stop).

4.11.4.5 SLOWLY OPEN SGN-SOH {Nitrogen Stop Valve to PCV-1135 Diaphragm).

4.11.4.6 CLOSE IA-1009, (PCV-*1135 Instrument Air Control Panel Vent).

4.11.4.7 IF Back-up N2 is require~d.

THEN CONNECT back-up N2 bottle as follows:

CLOSE SGN-520, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottle isolation.

OPEN N-853, Secondary N2 Bottle Supply Stop (downstream of bottle regulator).

CHECK N2 bottle requlator set to 85 psig.

~o: 2-SOP-ESP-001 H

LOCAL EQUIPMENT OPERATION Rev: 9 AND CONTINGENCY ACTIONS )age 28 of 97

~-----------------------------------

CAUTION Use of valve IA-1 009 (PCV-1135 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2 supply. Valve IA-1009 should NOT be left open to maintain pressure.

4.11.4.8 OPENffHROTTLE/CLOS E PCV-1135 (STM Gen 22 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by SLOWLY INCREASING (clockwise) Nitrogen pressure using PRV-5610, (Nitrogen Regulator to PCV-1135).

THROTTLE in CLOSED direction by decreasing (counter clockwisE~) Nitrogen pressure using PRV-5610 (Nitrogen Regulator to PCV-1135)

IF necessary to assh;t in THROTTLING CLOSED THEN VENT Nitrogen pressure with IA-1009 (PCV-1135 Instrument .ll\ir Control Panel Vent).

4.11.5 RESTORE PCV-1135, (STM Gen :22 Atmospheric Dump) alignment for normal operation as follows:

4.11.5.1 IF Back-up N2 bottle is alinned, THEN RESTORE as follows:

CLOSE N2 bottle isolation.

CLOSE N-853, Secondary N2 Bottle Supply Stop (downstream of bottle regulator).

CLOSE SGN-501, (PCV-1135 Local Control Station Nitrogen Supply Stop).

DISCONNECT quiclk disconnect.

4.11.5.2 CLOSE SGN-501, (PC'/-1135 Local Control Station Nitrogen Supply Stop).

4.11.5.3 OPEN IA-1 009, (PCV-1135 Instrument Air Control Panel Vent).

4.11.5.4 OPEN IA-1203, (PCV-113.5 Positioner Instrument Air Stop).

4.11.5.5 CLOSE SGN-509 (Nitrogen Stop Valve to PCV-1135 Diaphragm).

LOCAL EQUIPMENT OPERATION [~o: 2-SOP-ESP-001 Rev: 9 O_N_S_ ___.I~age 29 of 97

.____ _A_N_o_c_o_N_T_IN_G_E_N_C_Y_A_C_T_I__

4.11.5.6 CLOSE IA-1009, (PCV-11:351nstrumentAirControl Panel Vent).

4.11.5. 7 OPEN SGN-520, Primary l'b Supply Isolation.

4.11.6 ALIGN PCV-1136, (STM Gen 23 Atmospheric Dump) for local operation as follows:

4.11.6.1 VERIFY MS-3C, (PCV-*11 ~~6 Inlet Stop Main Stm Line 23)

OPEN.

4.11.6.2 CLOSE IA-1204, (PCV-11:36 Positioner Instrument Air Stop).

4.11.6.3 VERIFY PRV-5612, (NitrO~Jen Regulator to PCV-1136) is BACKED OUT FULLY.I[Counter-clockwise) 4.11.6.4 OPEN SGN-502, (PCV-11~36 Local Control Station Nitrogen Supply Stop).

4.11.6.5 SLOWLY OPEN SGN-510 (Nitrogen Stop Valve to PCV-1136 Diaphragm).

4.11.6.6 CLOSE iA-101 0, (PCV-11~16 Nitrogen Supply Vent Stop).

4.11.6.7 IF Back-up N2 is required, THEN CONNECT back-up N2 bottle as follows:

CLOSE SGN-521, Primary N2 Supply Isolation

CONNECT quick disconnect AND OPEN N2 bottle isolation

OPEN N-851 , Secondaty N2 Bottle Supply Stop (downstream of bottl13 mgulator)

CHECK N2 bottle regulator set to 85 psig

~

LOCAL EQUIPMENT OPERATION o: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS age 30 of 97

~------------------------------------'

CAUTION Use of valve IA-1010 (PCV-1136 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2 supply. Valve IA-1 010 should NOT be left open to maintain pressure.

4.11.6.8 OPEN!THROTTLE/CLOSE PCV-1136, (STM Gen 23 Atmospheric Dump) as follows:

THROTTLE in OPEN direction by slowly increasing (clockwise) Nitroge!n pressure using PRV-5612, (Nitrogen Regulator to PCV-1136)

THROTTLE in CLOSED direction by decreasing (counter clockwise) Nitrogen pressure using PRV-5612, (Nitrogen Regulator to PCV-1136)

IF necessary to assist in THROTTLING CLOSED THEN VENT Nitrogen pressure with IA-1 010 (PCV-11361nstrurnent Air Control Panel Vent) 4.11.7 RESTORE PCV-1136, (STM Gen 23 t~tmospheric Dump) alignment for normal operation as follows:

4.11.7.1 IF Back-up N2 bottle is aligned, THEN RESTORE as follows:

CLOSE N2 bottle isolation

CLOSE N-851 , Secondary N2 Bottle Supply Stop (downstream of bottl~~ mgulator)

CLOSE SGN-502, (PCV-1136 Local Control Station Nitrogen Supply Stop)

DISCONNECT quick di~;connect 4.11.7.2 CLOSE SGN-502, (PCV-1136 Local Control Station Nitrogen Supply Stop).

4.11.7.3 OPEN IA.-1010, (PCV-1136 Nitrogen Supply Vent Stop).

4.11. 7.4 OPEN IA-1204, (PCV-1136 Positioner Instrument Air Stop).

4.11.7.5 CLOSE SGN-510 (Nitro~1en Stop Valve to PCV-1136 Diaphragm).

4.11.7.6 CLOSE IA-1010, (PCV-113a Nitrogen Supply Vent Stop).

4.11.7.7 OPEN SGN-521, Primary N2 Supply Isolation.

LOCAL EQUIPMENT OPERATION No: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS Page 31 of 97

~--------------------------*--------~

4.11.8 ALIGN PCV-1137, (STM Gen 24 Atmospheric Dump).for local operation as follows:

4.11.8.1 VERIFY MS-3D, (PCV-1' 13:7 Inlet Stop Main Stm Line 24)

OPEN.

4.11.8.2 CLOSE IA-1205, (PCV-*11 a7 Positioner Instrument Air Stop).

4.11.8.3 VERIFY PRV-5614, (Nitro~1en Regulator Valve to PCV-1137) is BACKED OUT FULLY (counter-clockwise).

4.11.8.4 OPEN SGN-503 (PCV-1137 Local Control Station Nitrogen Supply Stop).

4.11.8.5 SLOWLY OPEN SGN-511, (Nitrogen Stop Valve to PCV-1137 Diaphragm).

4.11.8.6 CLOSE IA-1011 (PCV-113l Nitrogen Supply Vent Stop).

4.11.8.7 IF Back-up N2 is required, THEN CONNECT back-up N2 bottle as follows:

CLOSE SGN-521, Primary N2 Supply Isolation.

CONNECT quick disconnect AND OPEN N2 bottle isolation.

OPEN N-851, Secondary N2 Bottle Supply Stop (downstream of bottle refgulator).

CHECK N2 bottle regulator set to 85 psig.

~o: 2-SOP-ESP-001

]

LOCAL EQUIPMENT OPERATION Rev: 9 AND CONTINGENCY ACTIONS 'age 32 of 97

~------------------------------------

CAUTION Use of valve IA-1 011 (PCV-1137 Instrument Air Control Panel Vent) to throttle closed the atmospheric should be minimized to preserve N2 supply. Valve IA-1 011 should NOT be left open to maintain pressure.

4.11.8.8 OPENrrHROTILE/CLOSE PCV-1137, (STM Gen 24 Atmospheric Dump) as follows:

THROTILE in OPEN direction by slowly increasing

{clockwise) Nitrogen pressure using PRV-5614, (Nitrogen Regulator Valve to PCV-1137)

THROTTLE in CLOSED direction by decreasing (counter clockwisE~) Nitrogen pressure using PRV-5614, (Nitrogen Regulator Valve to PCV-1137)

IF necessary to assist in throttling Closed THEN VENT Nitrogen pressure with IA-1 011 (PCV-1137 (lnstrume!nt Air Control Panel Vent) 4.11.9 RESTORE PCV-1137, (STM Gen ~~4 Atmospheric Dump) alignment for normal operation as follows:

4.11.9.1 IF Back-up N2 bottle is ali~Jned, THEN RESTORE as follows:

CLOSE N2 bottle isolation.

CLOSE N*851, Secondary N2 Bottle Supply Stop (downstream of bottle regulator).

CLOSE SGN-503, (PCV-1137 Local Control Station Nitrogen Supply Stop).

DISCONNECT quick d1isconnect.

4.11.9.2 CLOSE SGN-503 (PCV-1"137 Local Control Station Nitrogen Supply Stop).

4.11.9.3 OPEN IA-1011 (PCV-1137' Nitrogen Supply Vent Stop).

4.11.9.4 OPEN IA-1205, (PCV-113~7 Positioner Instrument Air Stop).

LOCAL EQUIPMENT OPERATION lo: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

~--------------------------*-----------*

H 'age 33 of 97 4.11.9.5 CLOSE SGN-511, (Nitrog,en Stop Valve to PCV-*1137 Diaphragm).

4.11.9.6 CLOSE IA-1011 (PCV-11:37 Nitrogen Supply Vent Stop).

4.11.9.7 OPEN SGN-521, Primary N2 Supply Isolation.

4.12 CCR Atmospheric Steam Dumps (ATMOilllperation using Backup N2 Bottles (Reference 5.2.8.)

NOTE

Normally only one nitrogen bottle is aligned for servic:e at the PCV-1134/PCV-1135 (OR at PCV-1136/PCV-1137) control station at a time except when swapping bottles.

After aligning Nitrogen bottle(s) to the ATMOs, monitor N2 bottle pressure as necessary to ensure adequate volume to allow continuous ATMOs operation AND to place spare N2 bottle in service when pressure in the in service bottle reaches 500 psig. Replace the N2 bottle removed from sentiCE~ as necessary, since ATMOs fail CLOSED.

4.12.1 To ALIGN a specific Atmospheric Steam Dump (ATMOs) GO TO:

Step 4.12.2 for 21 ATMO

Step 4.12.4 for 22 ATMO

Step 4.12.6 for 23 ATMO

Step 4.12.8 for 24 ATMO 4.12.2 IF PCV-1134 (21 ATMO) needs to be operated from the CCR THEN ALIGN backup N2 Bottle Supply as follows:

4.12.2.1 VERIFY MS-3A, (PCV -1134 Inlet Stop Main Steam Line 21) is OPEN.

4.12.2.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-5:22 I SGN-524.

4.12.2.3 OPEN both Nitrogen bo111e:s isolation valves.

LOCAL EQUIPMENT OPERATION io: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

~-----------------------------------

R 'age 34 of 97 4.12.2.4 OPEN one of the followin~J valves:

N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-11~15 Panel

N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-11 ~IS Panel 4.12.2.5 VERIFY both of the following regulators are set for 85 psig.

a) N-850, Secondary N:! Bottle Supply Reg to PCV-1134/PCV-1*t3Ei Panel.

b) N-B54, Secondary N~: Bottle Supply Reg to PCV-1134/PCV-n3S Panel.

4.12.2.6 CLOSE IA-806, 21 S/G ATMO Relief PCV-11341A Stop.

4.12.2.7 OPEN SGN-522, CCR Fiemote Backup Nitrogen Inlet Stop to 21 ATMO.

4.12.2.8 NOTIFY CCR, N2 Bottle~ Supply is aligned to PCV-1134 (21 SG ATMO).

4.12.2.9 CCR operator to POSITION PCV-1134 (21 SG ATMO) as directed .

4.12.2.1 0 NPO to MONITOR bottle pressure AND SWAP to alternate bottle per step 4.12.1 0 whem pressure reaches 500 psig.

4.12.3 IF PCV-1134, (21 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the following:

4.12.3.1 OPEN IA-806, 21 S/G A TIVIO Relief PCV-1134 lA Stop.

4.12.3.2 CLOSE SGN-522, CCR Re~mote Backup Nitrogen Inlet Stop (21 ATMO).

4.12.3.3 NOTIFY CCR; PCV-1134 (:21 ATMO) N2 Bottle Supply is isolated AND Instrument Air has been restored.

4.12.3.4 IF nitrogen is NOT needl:!d for PCV-1135 (22 ATMO)

THEN PERFORM the folllowing:

a) CLOSE both Nitrog,en bottles isolation valves.

b) VEFliFY the following are FULLY BACKED OUT:

LOCAL EQUIPMENT OPERATION Jo: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

~-----------------------------------

B )age 35 of 97

1) N-850, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

2) N-854, Secondary N2 Bottle Supply Reg to PCV -1134/PCV-1135 Panel.

c) CAREFULLY DISCONNECT both quick disconnects AND INSTALL thE~ dust covers.

d) VERIFY the followin!~ valves are CLOSED:

1) N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

2) N-855, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV-1135 Panel.

4.12.4 IF PCV-1135, (22 ATMO) needs to bE~ operated from the CCR THEN ALIGN backup N2 Bottle Supply as follows:

4.12.4.1 VERIFY MS-3B, (PCV-11:35 Inlet Stop Main Steam Line 22}

is OPEN.

4.12.4.2 CONNECT both nitrogen bottle quick disconnects to the fittings upstream of SGN-E>22 I SGN-524.

4.12.4.3 OPEN both Nitrogen bottiE~s isolation valves.

4.12.4.4 OPEN one of the followin9 valves:

N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-11:35 Panel.

N-855, Seconda1ry Nitrogen Bottle Supply Stop to PCV-1134/PCV-11 :35 Panel.

4.12.4.5 VERIFY both of the following regulators are set for 85 psig.

a) N-850, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-11135* Panel.

b) N-854, Secondary N2 Bottle Supply Reg to PCV -1134/PCV -1135 Panel.

4.12.4.6 CLOSE IA-807, 22 S/G ATMO Relief PCV-11351A Stop.

4.12.4.7 OPEN SGN-524, CCR Remote Backup Nitrogen Inlet Stop to 22 ATMO.

LOCAL EQUIPMENT OPERATION ~Jo: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS D,age 36 of 97

~-----------------------------------

4.12.4.8 NOTIFY CCA, N2 BotHe Supply is aligned to PCV-1135 (22 ATMO).

4.12.4.9 CCR operator to POSITION PCV-1135 (22 ATMO) as directed.

4.12.4.1 0 NPO to MONITOR bottle pressure AND SWAP to alternate bottle per step 4.12.1 0 when pressure reaches 500 psig.

4.12.5 IF PCV-1135, (22 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the following:

4.12.5.1 OPEN IA-807, 22 S/G J'l.TMOS Relief PCV-1135 lA Stop.

4.12.5.2 CLOSE SGN-524, CCR Remote Backup Nitrogen Inlet Stop (22 ATMO).

4.12.5.3 NOTIFY CCR; PCV-11 :35 (22 ATMO) N2 Bottle Supply is isolated AND Instrument Air has been restored.

4.12.5.4 IF nitrogen is NOT needed for PCV-1134 (21 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitrogen bottles isolation valves.

b) VERIFY the followin9 are FULLY BACKED OUT.

1) N-850, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

2) N-854, Secondary N2 Bottle Supply Reg to PCV-1134/PCV-1135 Panel.

c) CAREFULLY DISCONNECT both quick disconnects AND INSTALL the dust covers.

d) VERIFY the following valves are CLOSED:

1) N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV.. 1135 Panel.

2) N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1135 Panel.

4.12.6 IF PCV-1136, (23 ATMO) needs to be operated from the CCR, THEN ALIGN backup N2 Bottle Supply as follows:

LOCAL EQUIPMENT OPERATION lo: 2-SOP-ESP-001 ~ev: 9 AND CONTINGENCY ACTIONS

~-----------------------------------

H 'age 37 of 97 4.12.6.1 VERIFY MS-3C, (PCV-1136 Inlet Stop Main Steam Line 23) is OPEN.

4.12.6.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-!526/ SGN-528.

4.12.6.3 OPEN both Nitrogen botU3s isolation valves.

4.12.6.4 OPEN one of the followinn valves:

N-851 , Secondary Nitrogen Bottle Supply Stop to PCV -1136/PCV -1137 Panel

N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel 4.12.6.5 VERIFY both of the following regulators are set for 85 psig.

a) N-852, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-1137 Panel.

b) N-856, Secondary N:~ Bottle Supply Reg to PCV-1136/PCV-1137 Panel.

4.12.6.6 CLOSE IA-808, 23 S/G ATMOS Relief PCV-1135 lA Stop.

4.12.6.7 OPEN SGN-526, CCR Remote Backup Nitrogen Inlet Stop to 23 ATMO.

4.12.6.8 NOTIFY CCR, N2 BottlE~ Supply is aligned to PCV-1136 (23 ATMO).

4.12.6.9 CCR operator to POSITION PCV-1136 (23 SG ATMO) as directed.

4.12.6.1 0 NPO to MONITOR bottle pressure AND SWAP to alternate bottle per step 4.12.1 0 when pressure reaches 500 psig.

4.12.7 IF PCV-1136, (23 ATMO) needs to be* removed from N2 Backup operation, THEN PERFORM the following:

4.12.7.1 OPEN IA-808, 23 S/G ATMOS Relief PCV-11361A Stop.

4.12. 7.2 CLOSE SGN-526, CCFt Remote Backup Nitrogen Inlet Stop (23 ATMO).

4.12.7.3 NOTIFY CCR; PCV-1136 (23 ATMO) N2 Bottle Supply is isolated AND Instrument .A.ir has been restored.

LOCAL EQUIPMENT OPERATION AND CONTINGENCY ACTIONS L------------------------------------

4.12.7.4 ti lo: 2-SOP-ESP-001

age 38 of 97 IF nitrogen is NOT needed for PCV-1137 (24 ATMO)

Rev: 9 THEN PERFORM the following:

a) CLOSE both Nitrogen bottles isolation valves.

b) VERIFY the followin9 are FULLY BACKED OUT.

1) N-852, Secondary N2 Bottle Supply Reg to PCV -1136/PCV -1137 Panel

2) N-856, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-1137 Panel c) CAREFULLY DISCONNECT both quick disconnects AND INSTALL the dust covers.

d) VERIFY the followin9 are CLOSED:

1) N-851, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

2) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

4.12.8 IF PCV-1137 (24 ATMO) needs to be operated from the CCR, THEN ALIGN backup N2 Bottle Supply as follows:

4.12.8.1 VERIFY MS-3D, (PCV-"11~~71nlet Stop Main Steam Line 24) is OPEN.

4.12.8.2 CONNECT both Nitrogen bottle quick disconnects to the fittings upstream of SGN-526 I SGN-528.

4.12.8.3 OPEN both Nitrogen bottles isolation valves.

4.12.8.4 OPEN one of the following valves:

N-851, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-11'37 Panel

N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-113;7 Panel 4.12.8.5 VERIFY both of the following regulators are set for 85 psig.

a) N-852, Secondary N2 Bottle Supply Reg to PCV -1136/PCV -1137 Panel.

LOCAL EQUIPMENT OPERATION Jo: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS

~-----------------------------------

E ,age 39 of 97 b) N-856, Secondary N2 Bottle Supply Reg to PCV-1136/PCV-'11~17 Panel.

4.12.8.6 CLOSE IA-809, 24 S/Gi ATMO Relief PCV-11371A Stop.

4.12.8.7 OPEN SGN-528, CCR RE!mote Backup Nitrogen Inlet Stop to 24 ATMO.

4.12.8.8 NOTIFY CCR, N2 Bottl~9 Supply is aligned to PCV-1137 (24 ATMO).

4.12.8.9 CCR operator to POSITION PCV-1137 (24 ATMO) as directed.

4.12.8.10 NPO to MONITOR bottle pressure AND SWAP to alternate bottle per step 4.12.1 0 when pressure reaches 500 psig.

4.12.9 IF PCV-1137 (24 ATMO) needs to be removed from N2 backup operation, THEN PERFORM the following:

4.12.9.1 OPEN IA-809, 24 S/G ATIVIO Relief PCV-1137 lA Stop.

4.12.9.2 CLOSE SGN-528, CCH Remote Backup Nitrogen Inlet Stop (24 ATMO).

4.12.9.3 NOTIFY CCR; PCV-11:37 (24 ATMO) N2 Bottle Supply is isolated AND Instrument J!\ir has been restored.

4.12.9.4 IF nitrogen is NOT needed for PCV-1136 (23 ATMO)

THEN PERFORM the following:

a) CLOSE both Nitrogen bottles isolation valves.

b) VERIFY the following! are FULLY BACKED OUT.

1) N-852, Secondary N2 Bottle Supply Reg to PCV-1136/PCV*1137 Panel.

2) N-856, Secondatry N2 Bottle Supply Reg to PCV -1136/PCV-*1137 Panel.

c) CAREFULLY DISCONNECT both quick disconnects ANQ INSTALL the dust covers.

d) VERIFY the follow1ing are CLOSED:

~

LOCAL EQUIPMENT OPERATION o: 2-SOP-ESP-001 Rev: 9 AND CONTINGENCY ACTIONS age 40 of 97 L---------------------------------------*

1) N-851 , Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel.

2) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1137 Panel 4.12.1 0 WHEN pressure in a backup nitrogen bottle is 500 psig THEN SWAP applicable nitrogen bottles as follows:

4. 12. 10. 1 OPEN the following to place a spare N2 Bottle in service:

a) N-851, Secondary Nitrogen Bottle Supply Stop to PC:V-1136/PCV-1 '13? Panel.

b) N-853, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV -1 '13fi Panel.

c) N-855, Secondary Nitrogen Bottle Supply Stop to PCV -1134/PCV 13Ei Panel.

d) N-857, Secondary Nitrogen Bottle Supply Stop to PC:V -1136/PCV -1 *137 Panel.

4.12.1 0.2 CLOSE the applicable valves for the N2 Bottle with the low pressure:

a) N-851 , Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1.13/r Panel.

b) N-853, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1'13Ei Panel.

c) N-855, Secondary Nitrogen Bottle Supply Stop to PCV-1134/PCV-1'13S Panel.

d) N-857, Secondary Nitrogen Bottle Supply Stop to PCV-1136/PCV-1'13/' Panel.

4.12.1 0.3 CLOSE the isolation valve on the nitrogen bottle removed from service 4.12.1 0.4 REMOVE the regulator,, valve and hose assembly from the bottle and remove the bottle.

4.12.1 0.5 INSTALL a new nitrogen bottle AND RE-INSTALLL the regulator, valve and hose assembly.

4.12.1 0.6 OPEN the nitrogen bottle isolation valve.

Unit 2 NRC 2014 Exam Date 02/10/2014 Question: 21 Initial Conditions:

A 20% load rejection from 100% has occurred and the crew is stabilizing the plant in accordance with the appropriate AOP.

Current Conditions:

Control Bank "0" Group Counters are at 180 stE~ps.

H-2, a Control Bank "0" rod, indicates 223 steps on IRPI.

All other Control Bank "0" rods indicate 180 steps on IRPI.

I&C reports no blown fuse indicators for H-2.

Which ONE (1) of the following describes the current condition of rod H-2 and the basis for the applicable Tech Spec action?

Condition Basis A. Untrippable Shutdown Margin B. Untrippable Peaking Factors C. Trippable Shutdown Margin D. Trippable Peaking Factors Page 21 of75 02/19/2014

Question 21 The conditions provided in the stem of the question provide information to determine that control rod H2 is untrippable and therefore not operable. LCO 3.1.4 Actions Condition A "One or more rod(s) inoperable" applies. The final plant conditions, provide!d by the stem, place the plant at 80% power with control rod H2 at 223 steps and its bank demand position at 180 steps. LCO 3.1.4 requires 'When THERMAL POWER is s85% RTP, the difference between each individual indicated rod position and its group step counter demand position shall be S24 steps." Control rod H2 is 43 steps above its bank demand position, so LCO ~3.1.4 Actions Condition B "One rod not within alignment limits" also applies.

In the Technical Specification Bases, B3.1.4 "Rod Group Alignment Limits", in the Applicable Safety Analyses section, the second paragraph on page 813.1! .4-3 states:

"Two types of misalignment are distinguished. Durin~1 movement of a control rod group, one rod may stop moving, while the other rods in the !~roup continue. This condition may cause excessive power peaking. The second type of misalignment occurs if one rod fails to insert upon a reactor trip and remains stuck fully withdrawn. This condition requires an evaluation to determine that sufficient reactivity worth is held in the control rods to meet the SDM requirement, with the maximum worth rod stuck fully withdrawn."

The last paragraph on page B3.1.4-4 states:

"Shutdown and control rod OPERABILITY and alignment are directly related to power distributions and SDM, which are initial conditions assumed in safety analyses .... "

Control rod H2 embodies both types of misalignment describ13d above so excessive power peaking and shutdown margin (SDM) are both concerns.

Facility Position Both answers A and B are correct and supported by the T~3ctlnical Specifications.

References:

Technical Specification section 3.1.4, "Rod Group Ali~Jnment Limits" Technical Specification Bases section B3.1.4, "Rod Group Alignment Limits"

Rod Group Alignment Limits 3.1.4 3.1 REACTIVITY CONTROL SYSTEMS 3.1.4 Rod Group Alignment Limits LCO 3.1.4 All shutdown and control rods shall be OPERABLE.

Individual indicated rod positions shall be within the following limits:

a. When THERMAL POWER is> US% RTP, the difference between each individual indicated rod po:sition and its group step counter demand position shall be within the limits specified in Table 3.1.4-1 for the group step counter demand position; and

b. When THERMAL POWER is~ fl5% RTP, the difference between each individual indicated rod position and its group step counter demand position shall be ~ 24 s1teps.

APPLICABILITY: MODES 1 and 2.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One or more rod(s) A.1.1 Verify SDM to ~::~ within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable. the limits specified iin the COLR.

OR A.1.2 Initiate boration to restore 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months SDM to within limit.

AND A.2 Be in MODE 3. 6 hours0.25 days 0.0357 weeks 0.00822 months B. One rod not within B.1 Restore rod to within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months alignment limits. alignment limits.

OR INDIAN POINT 2 3.1.4- 1 Amendment No. 238

Rod Group Alignment Limits 3.1.4

-'1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME 8.2.1.1 Verify SDM to be! within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months the limits specified in the COLR.

QR 8.2.1.2 Initiate boration to mstore 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months SDM to within limit.

AND 8.2.2 Reduce THERMAL 2 hours0.0833 days 0.0119 weeks 0.00274 months POWER to s 75% RTP.

AND 8.2.3 Verify SDM is within the Once per f'

limits specified in tho 12 hours0.5 days 0.0714 weeks 0.0164 months COLR.

AND 8.2.4 Perform SR 3.2.1.1. 72 hours3 days 0.429 weeks 0.0986 months AND 8.2.5 Perform SR 3.2.2.1. 72 hours3 days 0.429 weeks 0.0986 months AND 8.2.6 Re-evaluate safety 5days analyses and confim1 results remain valid for duration of operation under these conditions.

c. Required Action and C.1 Be in MODE 3. 6 hours0.25 days 0.0357 weeks 0.00822 months associated Completion Time of Condition 8 not met.

' ....')

INDIAN POINT 2 3.1.4- 2 Amendment No. 238

Rod Group Alignment Limits 3.1.4 CONDITION REQUIRED ACTIION COMPLETION TIME D. More than one rod not D.1.1 Verify SDM is within the 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months within alignment limit. limits specified in the COLR.

D.1.2 Initiate boration to restore 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months required SDM to within limit.

D.2 Be in MODE 3. 6 hours0.25 days 0.0357 weeks 0.00822 months SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.4.1

-NOTE-Not required to be met for individual contfiol fiods until 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months after completion of control rod movement.

Verify individual rod positions within alignment limit. 12 hours0.5 days 0.0714 weeks 0.0164 months SR 3.1.4.2 Verify fiod freedom of movement (trippabiliity) by 92 days moving each rod not fully inserted in the core 2!: 10 steps in one direction.

SR 3.1.4.3 Verify rod drop time of each rod, from tlhe fully Prior to criticality withdrawn position, is :s; 2.4 seconds from the gripper after each removal release to dashpot entry, with: of the reactor head

b. All reactor coolant pumps operating.

INDIAN POINT 2 3.1.4- 3 Amendment No. 238

Rod Group Alignment Limits 3.1.4 Table 3.1.4-1 Maximum Permissible Rod Misalignment when > 85% RTP

{IRPI Rod Position minus Group Step Counter Demand Position)

Maximum Positive Deviation Maximum Negative Deviation Group Step Counter {IRPis reading greater than (IRPis reading less than Demand Position Group Step Counter Group Step Counter (steps) Demand Position) Demand Position)

'5:209 +12 -12 210 to 221 +16 -12 222 +16 -13 223 +*16 -14 224 +'16 -15 2:225 +'16 -16 INDIAN POINT 2 3.1.4- 4 Amendment No. 238

Rod Group Alignment Limits B 3.1.4 B 3.1 REACTIVITY CONTROL SYSTEMS B 3.1.4 Rod Group Alignment limits BASES BACKGROUND The OPERABILITY (trippability) of the shutdown and control rods is an initial assumption in all safety analyses that assume rod insertion upon reactor trip.

Maximum rod misalignment is an initial assumption in the safety analysis that directly affects core power distributions and assumptions of available SDM.

The applicable criteria for these reactivity and power distribution design requirements are 10 CFR 50, Appendix A, GDC 10, "Reactor Design,"

GDC 26, "Reactivity Control System Redundancy and Capability" (Ref. 1),

and 10 CFR 50.46, "Acceptance Cniteria for Emergency Core Cooling Systems for light Water Nuclear Power Plants" (Ref. 2).

Mechanical or electrical failures may cause a control or shutdown rod to become inoperable or to become misaligned from its group. Rod inoperability or misalignment may cause increased power peaking, due to the asymmetric reactivity distribution and a reduction in the total available rod worth for reactor shutdown. Therefore, rod alignment and OPERABILITY are related to core operation in design power peaking limits and the core design requirement of a minimum SDM.

limits on rod alignment have been established, and all rod positions are monitored and controlled during power operation to ensure that the power distribution and reactivity limits defined by the design power peaking and SDM limits are preserved.

Rod cluster control assemblies (RCCAs), or rods, are moved by their control rod drive mechanisms (CRDMs). Each CRDM moves its RCCA one step (approximately 5/8 inch) at a time, but at varying rates (steps per minute) depending on the signal output from the Rod Control System.

The RCCAs are divided among control banks and shutdown banks. Each bank may be further subdivided into two groups to provide for precise reactivity control. A group consists of two or more RCCAs that are electrically paralleled to step simultaneously. If a bank of RCCAs consists of two groups, the groups are moved in a staggered fashion, but always within one step of each other. IP2 has four control banks and four shutdown banks.

INDIAN POINT 2 B 3.1.4- 1 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES BACKGROUND (continued)

The shutdown banks are maintained either in the fully inserted or fully withdrawn position. The control banks are moved in an overlap pattern, using the following withdrawal sequence: When control bank A reaches a predetermined height in the core, control bank B begins to move out with control bank A. Control bank A stops at the position of maximum withdrawal, and control bank B continues to move out. When control bank B reaches a predetermined height, control bank C begins to move out with control bank B. This sequence continues until control banks A, B, and Care at the fully withdrawn position, and control bank Dis approximately halfway withdrawn. The insertion sequenc1a is the opposite of the withdrawal sequence. The control rods are arranged in a radially symmetric pattern, so that control bank motion does not introduce radial asymmetries in the core power distributions.

The axial position of shutdown rods and control rods is indicated by two separate and independent systems, which are the Bank Demand Position Indication System (commonly called 9roup step counters) and the Individual Rod Position Indication (IRPI) System.

The Bank Demand Position Indication System counts the pulses from the rod control system that moves the rods. There is one step counter for each group of rods. Individual rods in a ~Jroup all receive the same signal to move and should, therefore, all be at the same position indicated by the group step counter for that group. The Bank D1amand Position Indication System is considered highly precise (+/- 1 step or+/- * "inch). If a rod does not move one step for each demand pulse, the step counter will still count the pulse and incorrectly reflect the position of the rod.

The IRPI System provides an accurat'e indication of actual rod position, but at a lower precision than the step counters. This system is based on inductive analog signals from an eletctrical coil stack located above the stepping mechanisms of the control rod magnetic jacks, external to the pressure housing, but concentric with the rod travel. When the associated control rod is at the bottom of the core, the magnetic coupling between the primary and secondary coil windin<g of the detector is small and there is a small voltage induced in the secondary. As the control rod is raised by the magnetic jacks, the relatively high permeability of the lift rod causes an increase in magnetic coupling. Thus, an analog signal proportional to rod position is obtained. Direct, continuous readout of every control rod is presented to the operator on individual indicators (Ref. 3 ).

INDIAN POINT 2 8 3.1.4- 2 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES APPLICABLE Control rod misalignment accidents are analyzed in the safety analysis SAFETY (References 4 and 5). The acceptance criteria for addressing control rod ANALYSES inoperability or misalignment are that::

a. There be no violations of:

1. Specified acceptable fuel design limits or

2. Reactor Coolant System (HCS) pressure boundary integrity and

b. The core remains subcritical aft1:!r accident transients.

Two types of misalignment are distinguished. During movement of a control rod group, one rod may stop mavin~~. while the other rods in the group continue. This condition may causo excessive power peaking. The second type of misalignment occurs if one rod fails to insert upon a reactor trip and remains stuck fully withdrawn. Tl1is condition requires an evaluation to determine that sufficient reactivity wo1th is held in the control rods to meet the SDM requirement, with the maximum worth rod stuck fully withdrawn.

Two types of analysis are performed in regard to static rod misalignment

( (Ref. 5). With control banks at thE!ir iinsertion limits, one type of analysis

( considers the case when any one rod is completely inserted into the core.

The second type of analysis considlers the case of a completely withdrawn single rod from a bank inserted to its insertion limit. Satisfying limits on departure from nucleate boiling ratio in both of these cases bounds the situation when a rod is misaligned.

When reactorpow*~ris> 85% RTP, an indicated misalignment of+/- 12 steps

(+/- 7.5 inches) between individual rod positions and the group step counter demand position will not cause the power peaking factor limits to be exceeded. This limit assumes a maximum IRPI instrument error of+/- 12 steps

(+/- 7.5 inches) allowing for an actual mis*alignment of+/- 24 steps (+/- 15 inches).

However, when the group step counter demand position is > 209 steps, it is acceptable for the IRPI to indicate misalignment greater than+ 12 steps (i.e.,

may be up to+ 16 steps) as specified in Table 3.1.4-1 without accounting for peaking factor margin. This is acceptable because the top of active fuel (TAF) is at 221 steps. With group step counter demand position> 209 steps and IRPI deviation > + 12 steps, thE! IHPI determined rod position is above the top of active fuel where it will not result in increased peaking factors for increased misalignments. Similarly, allowable negative deviation limits may increase by 1 step for every step of filroup step counter demand position over the top of active fuel as specified in Table 3.1.4-1. These rod misalignment limits were justified in Reference 5 and approved in Reference 6.

INDIAN POINT 2 B 3.1.4- 3 Revision 0

Rod Group Alignment Limits B 3.1.4

)

BASES APPLICABLE SAFETY ANALYSES (continued)

When reactor power is ~ 85% RTP. an indicated misalignment of+/- 24 steps

(+/- 15 inches) between individual rod (i.e., IRPI) positions and the group step counter demand position will not cause the power peaking factor limits to be exceeded. This limit assumes a maximum instrument error of +/- 12 steps

(+/- 7.5 inches) allowing for an actual misalignment of +/- 36 steps

(+/- 22.5 inches). These rod misali!~nrnent limits were justified in Reference 5 and approved in Reference 6.

As explained in Reference 5, the rod alignment limit analyses were performed using two distinct models of the IP2 core. These models addressed large variations in cyclE:! length, number of feed assemblies, fuel enrichments and burnable poisons and are expected to bound any current or future fuel management strategies. Therefore, the results of the rod misalignment analyses are considered to be cycle independent.

Another type of misalignment occurs if one RCCA fails to insert upon a reactor trip and remains stuck fully withdrawn. This condition is assumed in the evaluation to determine that the required SDM is met with the maximum worth RCCA also fully withdrawn (Ref. 5).

The Required Actions in this LCO ensure that either deviations from the alignment limits will be corrected or that THERMAL POWER will be adjusted so that excessive local linear heat rates (LHRs) will not occur, and that the requirements on SDM and ejected rod worth are preserved.

Continued operation of the reactor with a misaligned control rod is allowed if the heat flux hot channel factor (Fa(Z)) and the nuclear enthalpy hot channel factor (F~H) are verified to be within tl1eir limits in the COLR and the safety analysis is verified to remain valid. When a control rod is misaligned, the assumptions that are used to determine the rod insertion limits, AFD limits, and quadrant power tilt limits are not preserved. Therefore, the limits may not preserve the design peaking factors, and Fa(Z) and F~H must be verified directly by incore mapping. Bases Section 3.2 (Power Distribution Limits) contains more complete discussions of the relation of Fa(Z) and F~H to the operating limits.

Shutdown and control rod OPERABILITY and alignment are directly related to power distributions and SDM, which are initial conditions assumed in safety analyses. Therefore they satis~{ Criterion 2 of 10 CFR 50.36(c)(2)(ii).

- ~.

INDIAN POINT 2 B 3.1.4- 4 Revision 0

Rod Group Alignment Limits B 3.1.4

(

")**", _,)

{

\

BASES LCO The limits on shutdown or control rod alignments ensure that the assumptions in the safety analysis will remain valid. The requirements on control rod OPERABILITY ensun3 that upon reactor trip, the assumed reactivity will be available and will be inserted. The control rod OPERABILITY requirements (i.e., trippability) are separate from the alignment requirements, which ensum that the RCCAs and banks maintain the correct power distribution and rod alignment. The rod OPERABILITY requirement is satisfied provided the rod will fully insert in the required rod drop time assumed in the safety analysis. Rod control malfunctions that result in the inability to move a rod (e.!~** rod lift coil failures), but that do not impact trippability, do not result in rod inoperability.

To ensure that individual rods arel properly aligned with their associated group step counter demand position, the following limits are placed on individual rod positions:

a. When THERMAL POWER is:> 8:5% RTP, the difference between each individual indicated rod position and its group step counter demand position shall be within the limits specified in Table 3.1.4-1 for the group step counter demand position; and

b. When THERMAL POWER is~~ 8!5% RTP, the difference between each individual indicated rod position and its group step counter demand position shall be ~ 24 steps.

Control rod misalignment is the IRPI Rod Position minus Group Step Counter Demand Position.

Failure to meet the requirements of this LCO may produce unacceptable power peaking factors and LHRs, or unacceptable SDMs, all of which may constitute initial conditions inconsistent with the safety analysis.

APPLICABILITY The requirements on RCCA OPER/\BILITY and alignment are applicable in MODES 1 and 2 because these an3 the only MODES in which neutron (or fission) power is generated, and the OPERABILITY (i.e., trippability and rod insertion speed) and alignment of rods have the potential to affect the safety of the plant. In MODES 3, 4, 5, and 6, the alignment limits do not apply because the control rods are bottomed and the reactor is shut down and not producing fission power. In the shutdown MODES, the OPERABILITY of the shutdown and control rods has the pot13ntial to affect the required SDM, but this effect can be compensated for by an increase in the boron concentration INDIAN POINT 2 8 3.1.4- 5 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES APPLICABILITY (continued) of the RCS. See LCO 3.1.1, "SHUTDOWN MARGIN," for SDM in MODES 3, 4, and 5 and LCO 3.9.1, "Boron Concentration," for boron concentration requirements during refueling.

ACTIONS A.1.1 and A.1.2 When one or more rods are inoperable (i.e. untrippable), there is a possibility that the required SDM may be adversely affected. Under these conditions, it is important to determine the SDM, and if it is less than the required value, initiate boration until the required SDM is recovered. The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is adequate for determining SDM and, if necessary, for initiating emergency boration and restoring SDM.

In this situation, SDM verification must include the worth of the untrippable rod, as well as a rod of maximum worth.

If the inoperable rod(s) cannot be restored to OPERABLE status, the plant

) must be brought to a MODE or condition in which the LCO requirements are not applicable. To achieve this status, the unit must be brought to at least MODE 3 within 6 hours0.25 days 0.0357 weeks 0.00822 months .

The allowed Completion Time is reasonable, based on operating experience, for reaching MODE :3 from full power conditions in an orderly manner and without challenging plant systems.

When a rod becomes misaligne~d. it can usually be moved and is still trippable. If the rod can be realigned within the Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , local xenon redistribution during this short interval will not be significant, and operation may proceed without further restriction.

Alternately, a power reduction to~; 8Ei% RTP will result in the LCO being met if IRPis associated with all groups indicate within+/- 24 steps(+/- 15 inches) of the group step counter demand position. If LCO 3.1.4.b is met when

85% RTP, realigning RCCAs to within the limits of LCO 3.1.4.a is required only as a condition for increasing power to> 85% RTP.

INDIAN POINT 2 B 3.1.4- 6 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES ACTIONS (continued)

An alternative to realigning a single misaligned RCCA to the group average position is to align the remainder of the group to the position of the misaligned RCCA. However, this must be done without violating the bank sequence, overlap, and insertion limits specified in LCO 3.1.5, "Shutdown Bank Insertion Limits," and LCO 3.11.6, "Control Bank Insertion Limits." The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months gives the operator sufficient time to adjust the rod positions in an orderly manner.

8.2.1.1 and 8.2.1.2 With a misaligned rod, SDM must be verified to be within limit or boration must be initiated to restore SDM to within limit.

Power operation may continue with one RCCA trippable but misaligned, provided that SDM is verified within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months represents the time necessary for determining the actual unit SDM and, if necessary, aligning and starting the necessary systems and components to initiate boration.

8.2.2. 8.2.3. 8.2.4. 8.2.5. and B.2.1Q

(~ For continued operation with a misaligned rod, RTP must be reduced, SDM must periodically be verified within limits, hot channel factors (Fa(Z) and F~)

must be verified within limits, and the safety analyses must be re-evaluated to confirm continued operation is permissible.

Reduction of power to 75% RTP ensures that local LHR increases due to a misaligned RCCJ\ will not cause the core design criteria to be exceeded. The Completion Time of 2 hours0.0833 days 0.0119 weeks 0.00274 months gives the operator sufficient time to accomplish an orderly power reduction without challenging the Reactor Protection System.

When a rod is known to be misali!~ne~d. there is a potential to impact the SDM. Since the core conditions can change with time, periodic verification of SDM is required. A Frequency of 12 hours0.5 days 0.0714 weeks 0.0164 months is sufficient to ensure this requirement continues to be met.

Verifying that F0 (Z), as approximated by Fg(Z) and F~(Z), and F~H are within the required limits ensures that current operation at 75% RTP with a rod misaligned is not resulting in power distributions that may invalidate safety analysis assumptions at full power. ThH Completion Time of 72 hours3 days 0.429 weeks 0.0986 months allows sufficient time to obtain flux maps of the core power distribution using the incore flux mapping system and to calculate F0 (Z) and F~H*

(~

(

INDIAN POINT 2 B 3.1.4- 7 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES ACTIONS (continued)

Once current conditions have been verified acceptable, time is available to perform evaluations of accident analysis to determine that core limits will not be exceeded during a Design Basis Event for the duration of operation under these conditions. The accident analyses presented in Reference 5 that may be adversely affected will be evaluated to ensure that the analysis results remain valid for the duration of continued operation under these conditions.

A Completion Time of 5 days is suffitCient time to obtain the required input data and to perform the analysis.

When Required Actions cannot be completed within their Completion Time, the unit must be brought to a MODE or Condition in which the LCO requirements are not applicable. To achieve this status, the unit must be brought to at least MODE 3 within 6 hours0.25 days 0.0357 weeks 0.00822 months , which obviates concerns about the development of undesirable xenon or power distributions. The allowed Completion Time of 6 hours0.25 days 0.0357 weeks 0.00822 months is reasonable, based on operating experience, for reaching MODE 3 from full power conditions in an orderly manner and without challenging the plant systems.

D.1.1 and 0.1.2 (

More than one control rod becoming misaligned from its group average position is not expected, and has the potential to reduce SDM. Therefore, SDM must be evaluated. One hour allows the operator adequate time to determine SDM. Restoration of tlhe required SDM, if necessary, requires increasing the RCS boron concentration to provide negative reactivity, as described in the Bases for LCO 2L 1.1. The required Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months for initiating boration is reasonable, based on the time required for potential xenon redistribution, the low probability of an accident occurring, and the steps required to complete the action. This allows the operator sufficient time to align the required valves and start the boric acid pumps.

Boration will continue until the requimd SDM is restored.

A power reduction to :s:: 85% RTP will result in the LCO being met if IRPis associated with all groups indicate within +/- 24 steps (+/- 15 inches) of the group step counter demand position. If LCO 3.1.4.b is met when

s:: 85% RTP, realigning RCCAs to within the limits of LCO 3.1.4.a is required only as a condition for increasing power to > 85% RTP.

INDIAN POINT 2 B3.1.4-8 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES ACTIONS (continued)

If more than one rod is found to be misaligned or becomes misaligned because of bank movement, the unit conditions fall outside of the accident analysis assumptions. Since automatic bank sequencing would continue to cause misalignment, the unit must be~ brought to a MODE or Condition in which the LCO requirements are not applicable. To achieve this status, the unit must be brought to at least MODE 3 within 6 hours0.25 days 0.0357 weeks 0.00822 months .

The allowed Completion Time is reasonable, based on operating experience, for reaching MODE 3 from full power conditions in an orderly manner and without challenging plant systems.

SURVEILLANCE SR 3.1.4.1 REQUIREMENTS Verification that individual rod positions are within alignment limits at a Frequency of 12 hours0.5 days 0.0714 weeks 0.0164 months provides a history that allows the operator to detect a rod that is beginning to deviate from its expected position. Rod position may

' be verified using normal indication, din3ct readings using a digital volt meter, or the plant computer. The specified Frequency takes into account other rod position information that is continuously available to the operator in the control room, so that during actual rod motion, deviations can immediately be detected.

This SR is modified by a Note that explains the SR is not required to be met for an individual control rod until 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months after completion of movement of that rod. This allowance is needed because it provides time for thermal stabilization of rod position instrumentation. This allowance is acceptable because individual rod position indicators may not accurately reflect control rod position prior to thermal stabiliization and there is a presumption that individual control rods will move with their group (Ref. 6).

SR 3.1.4.2 Verifying each control rod is OPERABLE would require that each rod be tripped. However, in MODES 1 and 2, tripping each control rod would result in radial or axial power tilts, or osd'lations. Exercising each individual control rod every 92 days provides increased confidence that all rods continue to be OPERABLE without exceeding the alignment limit, even if they are not regularly tripped. Movin~l each control rod by 10 steps in one direction will not cause radial or axial power tilts, or oscillations, to occur.

INDIAN POINT 2 B 3.1.4- 9 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES SURVEILLANCE REQUIREMENTS (continued)

This SR requires that control rods be inserted or withdrawn by at least 10 steps which is sufficient to ensure that rod movement can be confirmed by individual rod position indicators. The 92 day Frequency takes into consideration other information available to the operator in the control room and SR 3.1.4.1, which is performed more frequently and adds to the determination of OPERABIUnr of the rods. Between required performances of SR 3.1.4.2 (determination of control rod OPERABILITY by movement), if a control rod(s) is discovered to be immovable, but remains trippable the control rod(s) is considered to be OPERABLE. At any time, if a control rod(s) is immovable, a determination of the trippability (OPERABILITY) of the control rod(s) must be made, and appropriate action taken.

SR 3.1.4.3 Verification of rod drop times allows the operator to determine that the maximum rod drop time permitted is consistent with the assumed rod drop time used in the safety analysis. Measuring rod drop times prior to reactor criticality, after reactor vessel head removal, ensures that the reactor internals and rod drive mechanism will not interfere with rod motion or rod drop time, and that no degradation in these systems has occurred that would adversely affect control rod motion or drop time. This testing is performed with all RCPs operating and the av*3rage moderator temperature :?: 500°F to simulate a reactor trip under actual conditions.

This Surveillance is performed during a plant outage, due to the plant conditions needed to perform the SH and the potential for an unplanned plant transient if the Surveillance was performed with the reactor at power.

REFERENCES 1. 10 CFR 50, Appendix A.

2. 10 CFR 50.46.

3. UFSAR, Section 7.3.

4. UFSAR, Appendix 3.B.3.

5. WCAP-15902, "Conditional Extension of the Rod Misalignment Technical Specification for Indian Point Unit 2."

INDIAN POINT 2 B 3.1.4- 10 Revision 0

Rod Group Alignment Limits B 3.1.4 BASES REFERENCES (continued)

6. Safety Evaluation by the Office of Nuclear Reactor Regulation Related to Amendment No. 234 to Facility Operating License No.

DPR-26, October 12, 200~~-

INDIAN POINT 2 B 3.1.4- 11 Revision 0

v t e Letter Sequence Acceptance Review
TAC:U01890, (Open)
Initiation Acceptance Administration Questions Answers Results Approval... Other: ML14111A376
MONTHYEAR2014-02-19 [Table View]

ML14111A375

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