ML050330364

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Transmittal of Indian Point, Unit 3 Technical Specifications Bases
ML050330364
Person / Time
Site: Indian Point Entergy icon.png
Issue date: 01/19/2005
From:
Entergy Nuclear Indian Point 3
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML050330364 (15)
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i9-JAN-05 Page: 90 DTSTRTIRUTTON CONTROL LIST Document Name: ITS/BASES/TRM CCNAME NAME DEPT LOCATION a OPS PROCEDURE GROUP SUPV. OPS PROCEDURE GROUP, IP2 3 PLANT MANAGER'S OFFICE UNIT 3(UNIT 3/IPEC ONLY) IP2 5 CONTROL ROOM &'MASTER. OPS (3PT-D001/6 (U3/IPEC) IP3 (ONLY),

11 RES DEPARTMENT MANAGER.' RES (UNIT 3/IPEC ONLY).* 45-4-A 16 BOCCIO'JOUN I&C OFFICE (SUPERVISOR) 45-2-A 19 STEWART ANN LICENSING GSB-2.D.

20 CHEMISTRY SUPERVISOR CHEMISTRY DEPARTMENT 45-4-A 21 TSC(IP3) EEC BUILDING IP2 22 SHIFT MGR.(LUB-001-GEN) OPS (UNIT 3/IPEC ONLY) IP3 23.LIS LICENSING & INFO SERV OFFSITE 25 SIMULATOR TRAIN(UNIT 3/IPEC ONLY) 48-2-A 28 RESIDENT INSPECTOR US NRC 88' ELEVATION IP2 32 EOF E-PLAN (ALL EP'S) EOF 47 CHAPMAN N BECHTEL OFFSITE 50 TADEMY.L. SHARON WESTINGHOUSE ELECTRIC OFFSITE 55 GSB TECHNICAL LIBRARY A MCCALLION/IPEC,IP2/IP3 GSB-4B 61 SIMULATOR TRAIN(UNIT 3/IPEC ONLY) 48-2-A 69 CONROY PAT LICENSING/ROOM 205 GSB-2D 99 BARANSKI J (ALL) ST. EMERG. MGMT. OFFICE OFFSITE 102 BILYOU CHRISTINE I&C ONLY I&C SUPPORT 45-2-D 106 SIMULATOR INSTRUCT AREA TRG/3PT-DOO1-D006 ONLY) #48

'164 CONTROL ROOM & MASTER 'OPS(3PT-D001/6(U3/IPEC) IP3(ONLY) 207 TROY M ,PROCUREMENT ENG. IA 273 FAISON CHARLENE NUCLEAR LICENSING WPO-12 319 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 354 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 357 L.GRANT(ITS/INFO ONLY) TRAINING - ILO CLASSES 48-2-A 424 GRANT LEAH (9 COPIES) (UNIT 3/IPEC ONLY) #48 474 OUELLETTE P ENG., PLAN & MGMT INC OFFSITE 483 SCHMITT RICHIE MAINTENANCE ENG/SUPV 45-1-A 484 HANSLER ROBERT REACTOR ENGINEERING 72'UNIT 2 485 DRAKE RICH DESIGN ENG/GSB/3RD FLOOR GSB-3B 489 CLOUGHNESSY PAT PLANT SUPPORT TEAM GSB-3B 491 ORLANDO TOM (MANAGER) PROGRAMS/COMPONENTS ENG 45-3-G 492 FSS UNIT 3 OPERATIONS K-IP-I210 493 OPERATIONS FIN TEAM 33 TURBIN DECK 45-1-A 494 AEOF/A.GROSJEAN(ALL EP'S) E-PLAN (EOP'S ONLY) WPO-12D 495 JOINT NEWS CENTER EMER PLN (ALL EP'S) EOF 496 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 497 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 500 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 501 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 512 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 513 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 518 DOCUMENT CONTROL DESK NRC (ALL EP'S) OFFSITE 527 MILIANO PATRICK NRC/SR. PROJECT MANAGER OFFSITE A 529 FIELDS DEBBIE OUTAGE PLANNING IP3/OSB IQ*J)

IPEC SITE QUALITY RELATED IP-SMM-AD-103 Revision 0 Entergy MANAGEMENT ADMINISTRATIVE PROCEDURE MANUAL .

INFORMATIONAL USE Page 13 of 21 ATTACHMENT 10.1 SMM CONTROLLED DOCUMENT TRANSMITTAL FORM SITE MANAGEMENT MANUAL CONTROLLED DOCUMENT TRANSMITTAL FORM - PROCEDURES Page 1 of

...Ente,,y

~ CONTROLLED DOCUMENT TRANSMITTAL FORM - PROCEDURES TO: DISTRIBUTION DATE: 1124105 PHONE NUMBER: 271-7057 FROM: IPEC DOCUMENT CONTROL The Document(s) Identified below are forwarded for use. In accordance with IP-SMM-AD-103, please review to verify receipt, incorporate the document(s) into your controlled document file, properly 8isposition superseded, void, or inactive document(s). Sign and return the receipt acknowledgement below within fifteen (15) working days.

AFFECTED DOCUMENT: IP3ITS I BASES ITRM DOC# REV# TITLE INSTRUCTIONS

              • FOLLOW THE ATTACHED -INSTRUCTIONS*********
                      • PLEASE NOTE EFFECTIVE DATE**********

RECEIPT OF THE ABOVE LISTED DOCUMENT(S) IS HEREBY ACKNOWLEDGED. I CERTIFY THAT ALL SUPERSEDED, VOID, OR INACTIVE COPIES OF THE ABOVE LISTED DOCUMENT(S) IN MY POSSESSION HAVE BEEN REMOVED FROM USE AND ALL UPDATES HAVE BEEN PERFORMED IN ACCORDANCE WITH EFFECTIVE DATE(S) (IF APPLICABLE) AS SHOWN ON THE DOCUMENT(S).

NAME (PRINT) SIGNATURE DATE CC# Avg NAME (PRINT) SIGNATURE DATE COIl

INDIAN POINT 3 TECHNICAL SPECIFICATION BASES INSTRUCTIONS FOR UPDATE: 12-01/24105 REMOVE INSERT a) List of Effective Sections; a) List of Effective Sections; 3 pages (Rev. 11) 3 pages (Rev. 12) b) Section 3.7.11; Rev. 2 b) Section 3.7.11; Rev. 3 9 pages 9 pages

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TECHNICAL SPECIFICATION BASES LIST OF EFFECTIVE SECTIONS BASES l NUMBER f EFFECTIVE SECTION REV l NUMER I EFFECTIVE SECTION REV OF PAGES l DATE SETIN EV OF PAGES DATE:

Tbl of CntJ 1 4 05/18/2001 B 3.6 CONTAINMENT B 2.0 SAFETY LIMITS B 3.6.1 0 5 03/19/2001 B 2.1.1 I 0 5 103/1912001 B 3.6.2 0 9 03/19/2001 B 2.1.2 j 0 4 j 03/1912001 B 3.6.3 0 17 03/19/2001 B 3.0 LCO AND SR APPLICABILITY B 3.6.4 0 3 03/19/2001 B 3.0 1I 15 109/30/2002 B 3.6.5 1 5 06/20/2003 B 3.1 REACTIVITY CONTROL B 3.6.6 1 13 12/04/2002 B 3.1.1 0 6 03/19/2001 B 3.6.7 0 6 03/19/2001 B 3.1.2 0 7 03/19/2001 B 3.6.8 0 6 03/1 912001 B 3.1.3 1 . 7 10/27/2004 B 3.6.9 0 8 03/19/2001 B 3.1.4 0 13 03/19/2001 B 3.6.10 0 12 03/19/2001 B 3.1.5 0 5 03/19/2001 B 3.7 PLANT SYSTEMS B 3.1.6 0 6 03/19/2001 B 3.7.1 1 6 12/04/2002 B 3.1.7 0 8 03/19/2001 B 3.7.2 0 10 03/19/2001 B 3.1.8 0 7 03/19/2001 B 3.7.3 1 7 05/18/2001 B 3.2 POWER DISTRIBUTION LIMITS - B 3.7.4 0 5 03/1912001 B 3.2.1 0 l 7 l 03/19/2001 B 3.7.5 0 11 03/19/2001 B 3.2.2 0 l _ 7 03/1912001 B 3.7.6 1 r 4 12/04/2002 B 3.2.3 0 9 03119/2001 B 3.7.7 1 4 12/17/2004 B 3.2.4 0 7 03119/2001 B 3.7.8 0 7 03/19/2001 13B3.3 INSTRUMENTATION B 3.7.9 1 9 09/30/2002 B 3.3.1 l 1 59 09/30/2002 B 3.7.10 0 3 03/19/2001 B 3.3.2 3 45 12/04/2002 B 3.7.11 3 9 01/2412005 B 3.3.3 2 19 09/30/2002 B 3.7.12 0 4 . 03/19/2001 B 3.3.4 0 7 03/19/2001 1 3.7.13 2 7 06120/2003 B 3.3.5 1 6 10/27/2004 B 3.7.14 0 3 03/19/2001 B 3.3.6 0 10 03/1912001 B 3.7.15 0 5 03/19/2001 B 3.3.7 0 6 03/19/2001 B 3.7.16 0 6 03/1912001 B 3.3.8 1 4 03/17/2003 B 3.7.17 0 4 03/19/2001 B 3.4 REACTOR COOLANT SYSTEM B 3.8 ELECTRICAL POWER B 3.4.1 0 6 03/19/2001 B 3.8.1 1 32 01/22/2002 B 3.4.2 0 3 03/19/2001 B 3.8.2 0 7 03/19/2001 B 3.4.3 1 c 10/27/2004 B 3.8._- 0 13 03/19/2001 B 3.4.4 0 4 03/19/2001 B 3.8.4 1 11 01/22/2002 B 3.4.5 0 6 03/19/2001 B 3.8.5 0 4 03/19/2001 B 3.4.6 0 6 03/19/2001 B 3.8.6 0 T 8 03/19/2001 B 3.4.7 0 7 03/19/2001 B 3.6.7 1 8 06/20/2003 B 3.4.8 0 i 4 03/19/2001 B 3.8.8 1 4 06/20/2003 B 3.4.9 _ 2 5 06/20/2003 B 3.8.c 2 14 06/20/2003 B 3.4.10 0 A5 03/19/2001 B 3.8.10 0 4 03/19/2001 B 3.4.11 0 8 03/19/2001 B 3.9 REFUELING OPERATIONS B 3.4.12 --1 20 10/27/2004 B 3.9.1 1 0 4 l 03/19/2001 B 3.4.13 2 6 1 11/19/2001 B 3.9.2 [ 0 j 4 03/19/2001 B 3.4.14 0 10 03/1912001 B 3.9.3 1 8 03117/2003l B3.4.15 2 . 7 11/19/2001 B 3.9.4 0 l 4_ l 03/19/2001 B 3 4.16

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B 3.5. --ij - 03/19/2001 B 3.5.4 0 C. 03/19/2001 INDIAN POINT 3 Page 1 of 3 Revision 12

TECHNICAL SPECIFICATION BASES REVISION HISTORY REVISION HISTORY FOR BASES AFFECTED EFFECTIVE SECTIONS REV DATE DESCRIPTION Initial issue of Bases derived from NUREG-1431, in ALL 0 03/19/01 conjunction with Technical Specification Amendment 205 for conversion of 'Current Technical Specifications' to

'Improved Technical Specifications'.

BASES UPDATE PACKAGE 01-031901 Changes regarding containment sump flow monitor per B 3.4.13 1 03/19/01 NSE 01-3-018 LWD Rev 0.

B 3.4.15 Change issued concurrent with Rev 0.

BASES UPDATE PACKAGE 02-051801 Table of Contents 1 05/18/01 Title of Section B 3.7.3 revised per Tech Spec Amend 207 B 3.7.3 l 1 05/18/01 Implementation of Tech Spec Amend 207 BASES UPDATE PACKAGE 03-111901 I 1 Correction to statement regarding applicability of Function B 3.3.2 1 11/19/01 5, to be consistent with the Technical Specification.

Changes to reflect reclassification of certain SG narrow B 3.3.3 1 11/19/01 range level instruments as QA Category M per NSE 97 439, Rev 1.

I __Changes to reflect installation of a new control room alarm B 3.4.13 2 11/19/01 for'VC Sump Pump Running'. Changes per NSE 01 B 3.4.15 _ 018, Rev 1 and DCP 01-3-023 LWD.

,lClarification of allowable flowrate for CRVS in 'incident B 3.7.11 1 11/19/011 mode with outside air makeup.'

BASES UPDATE-PACKAGE 04-012202 B 3.3.2 2 j 01/22/02 Clarify starting logic of 32 ABFP per EVL-01-3-078 MULTI, I_ I Rev 0.

B 3.8.1 1 01/22/02 Provide additional guidance-for SR 3.8.1.1 and Condition

!__i _ I_ -_ IStatements A.1 and B.1 per EVL-01-3-078 MULTI, Rev 0.

l B 3.8.4 1 01/22/02 I Revision of battery design description per plant

$_ I { modification and to reflect Tech Spec Amendment 209.

B 3.8.9 1 01/22/02 Provide additional information regarding MCC in Table B 3.8.9-1 per EVL-01-3-078 MULTI, Rev 0.

- BASES UPDATE PACKAGE 05-093002 B 3.0 1 09/30/02 Changes to reflect Tech Spec Amendment 212 regarding delay period for a missed surveillance. Changes adopt

!__ lTSTF 358. Rev 6.

i B 3.3.1 1 1 09/30/02 I Changes regarding description of turbine runback feature l__ fiper EVAL-99-3-063 NIS.

B 3.3.3 ---- -- 2 -t - 09/30/02 --tChanges to reflect Tech Spec-Amendment 21 1regarding- -

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ig09/30/02= Chanbesxreoarding:SWN+/--35-+/-and -.2valves per.

EVAL-00-3-095 SWS. Rev 0.

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INDIAN POINT 3 Page 2 of 3 Revision 12

TECHNICAL SPECIFICATION BASES REVISION HISTORY AFFECTED EFFECTIVE 1 SECTIONS REV DATE DESCRIPTION

-;.,,; BASES' UPDATEPACKAGE 06-120402<'.:

B 3.3.2 3 12/04/02 Changes to reflect Tech Spec Amendment 213 regarding B 3.6.6 '1 1.4% power uprate.

B3.7.1 1 B 3.7.6 1

__________,, .'; iBASES UPDATEPACKAGE 07-031703 B 3.3.8 1 03/17/2003 Changes to reflect Tech Spec Amendment 215 regarding B 3.7.13 1 implementation of Alternate Source Term analysis B 3.9.3 1 methodology to the Fuel Handling Accident

_ UPDATE:PAC GE'08-032803, , :BASES B 3.4.9 1 03128/2003 i Changes to reflect Tech Spec Amendment 216 regarding l relaxation of pressurizer level limits in MODE 3.

_________~f  : j<,se BASES UPDATEPACKAGE.09-062003.&--,-' : .. ,

B 3.4.9 2 06/20/2003 Changes to reflect commitment for a dedicated operator per Tech Spec Amendment 216.

B 3.6.5 1 06/20/2003 Implements Corrective Action 11 from CR-1P3-2002-02095; 4 FCUs should be in operation to assure representative measurement of containment air temperature.

B 3.7.11 2 06/20/2003 Correction to Background description regarding system response to Firestat detector actuation per ACT 02-62887.

B 3.7.13 2 06/20/2003 Revision to Background description of FSB air tempering

_ units to reflect design change per DCP 95-3-142.

B 3.8.7 1 06/20/2003 Changes to reflect replacement of Inverter 34 per DCP-B 3.8.8 1 06/20/2003 01-022.

B 3.8.9 2 06/20/2003 -__

.__-- _e_---._ . BASES UPDATE PACKAGE 10-1 02704 10/27/2004 Clarification of the surveillance requirements for TS 3.1.3 B 3.1.3 I B 3.3.5 l

1 1

[Iper 50.59 screen.

10/27/2004 Clarify the requirements for performing a Trip Actuating Device Operational Test (TADOT) on the 480V degraded

__ _grid and undervoltage relays per 50.59 screen. I l B 3.4.3 1 10/27/2004 Extension of the RCS pressure/temperature limits and corresponding OPS limits from 16.17 to 20 EFPY (TS I B 3.4.12 1 I Amendment 220).

B 3.5.1 1 1 10/27/2004 Changes to reflect Tech Spec Amendment 222 regarding

_____ Iextension of completion time for Accumulators.

i-- ' BASES UPDATEPACKAGE 11-121004 I B 3.7.7 1 i 12/17/2004 1Addition of valves CT-1300 and CT-1302 to Surveillance SR 3.7.7.2 to verify that all city water header supply isolation valves are open. Reflects Tech Spec I__ I - i Amendment 218.

,- BASES UPDATE PACKAGE 12-012405 B3:7:1-1---- - 0112412005-- emporary allowance for use of KI/SCBA for unfilteredc- ----Il -

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INDIAN POINT 3 Page 3 of -3 Revision 12

CRVS B 3.7.11 B 3.7 PLANT SYSTEMS B 3.7.11 Control Room Ventilation System (CRVS)

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BACKGROUND The CRVS provides a protected environment from which operators can control the unit following an uncontrolled release of radioactivity.

chemicals, or toxic gas. --

The Control Room Ventilation System consists of the following equipment: a single filter unit-consisting of two roughing filters.

two high efficiency particulate air (HEPA) filters; two activated charcoal adsorbers for removal of gaseous activity (principally iodines); two 100Zcapacity-filter booster fans; and, a single duct

-system including dampers, controls and associated accessories to

.provide for three different airflow configurations. The air-

. conditioning units associated with the CRVS are governed by LCO

  • 3.7.12, "Control Room Air Conditioning System (CRACS)."'

The CRVS is divided into-two trains with each train consisting of a filter booster fan and -the associated inlet damper and the following components which are common to both trains: the control room'filter unit, damper A (filter unit bypass for outside air makeup to the Control, Room). damper'B (filter unit.inlet for-outside air'makeup to the Control Room), damper C (filter unit inlet for reticulated air),

and the toilet and locker room exhaust fan.. The two filter booster, fans (F 31 and F 32) are powered from safeguards power trains 5A (EDG

33) and 6A (EDG 32Y. respectively. The automatic'dampers that are common to both trains are positioned in the fail-safe position (open
  • or closed) by either of the redundant actuation channels.

-The CRVS is an emergency-system. parts of which operate during normal unit operations. ,'.

The three different CRVS air flow configurations are as follows:

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INDIAN POINT 3 B 3.7.13 - 3 Revi si on 3

CRVS B 3.7.11

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.9 IJ BASES BACKG1ROUND a) Normal operation consists of approximately 85% (8500 cfm)

(co]ntinued) unfiltered recirculated flow driven by the air-conditioning fans; and approximately 15% (1500 cfm) unfiltered outside air makeup; b) Incident mode with'outside air makeup (i.e. 10% incident mode) consists of approximately 87% (9250 cfm) unfiltered recirculated flow driven by the two safety related air-conditioning fans, at

'least10O-%(> 1000'cfm)7filtered recirculated flow driven by either one of'the two filter'booster fans and 35 to 400 cfm filtered outside air makeup; c) Incident mode'with'no outside air makeu'p (i.e. 100% incident mode) consists of 85%'(9100 cfm)'unfiltered recirculated flow driven by

  • the two safety related air-conditioning fans,'approximately 15%

filtered recirculated'flow driven by'either-one of the two filter

- booster fans 'and'no outside air makeup.

Note that the required recirculation rates are'demonstrated with surveillance tests conducted with the air'conditioning system (CRACS) operating.- An inoperable CRACS fan will'affect the flow balance of the CRVS'due to interconnected ductwork. 'Therefore, if the fan associated with one'of the air-conditioning units governed by LCO 3.7.12 is inoperable. Conditions in both LCO 3.7.11. Control Room Ventilation System, and LCO 3.7.12. Control Room Air Conditioning System (CRACS),'will'apply.'

Incident mode with'outside'air makeup'is the preferred method of operation during any radiological'event-because it provides outside air for pressurization of the Control Room. Calculations indicate that very low flowrates (e.'g.-35 cfm)'of'outside air makeup will maintain the Control Room at a slight positive pressure.

Nevertheless, due to the difficulty of adjusting and maintaining the

'flow dampers to provide'a low flow,'the'dampers are typically adjusted to provide a flow of approximately 250 cfm (2.5% outside air makeup).

However, a higher volume of outside air makeup to INDIAN POINT 3 B 3.7.1] - 2 Revision 3

CRVS B 3.7.11 BASES BACKGROUND the Control Room inicease the thyroid dose to the operators during (continued) an'accident. Therefore,'the Control Room dose assessment assumes a filtered outside'air makeup'6f approximately'400 cfm (4.0% outside air makeup).

On a Safety Injection signal or high radiation in the Control Room (Radiation Monitor R-1). the CRVS will actuate to the incident mode with outside'airmakeu'O(i.e. 3O0'incident mode). This will cause one

-of the two filters booster'fans to'start, the locker room exhaust fan to stop, and CRVS'dampers'to openorciose as necessary to filter all incoming outside air and direct approximately 10 of the recirculated air through the filter unit. In the event that the first booster fan fails to start, the second booster fan will start after a predetermined time delay.

If for any reason itfis required or desired to operate with 100X recirculated air (e.g..- toxic gas condition-is identified), the CRVS '

'can be placed in the incident'mode with no outside air makeup (i.e.

100 -incident mode)'by'remote'manually operated switches. The Firestat detectors-will shutdown both air conditioning units associated with the CRVS,- resulting in shutting the outside air

-dampers.' How'ever.,'if any filter booster fan was running at that time, it will continue to run.

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-The control room is'continuously monitored by'radiation and toxic gas

'detectors. -On'a SafetylInjection signal or high radiation in the Control Room'(Radiation:Monitor.R-1). will cause actuation of the emergency radiation state'of the CRVS (i.e.; incident mode with outside air'makeupo(i.e.'1O1incident mode)).-

.The CRVS does not actuate automatically in response to toxic gases.

Separate chlorine, ammonia and oxygen probes are provided to detect the presence of these gases-in the outside air intake. Additionally, monitors-in the!Conitrol-Room will detect low oxygen levels and high

-'levels of-chlorine'and ammonia. The CRVS may be placed in the incident mode with-no'outside air makeup (i.e. 1001 incident mode) to respond to these conditions. Instrumentation for toxic gas monitoring is governed by the IP3 Technical Requirements Manual (TRM) ( Ref. 4).

Generally, the manually initiated actions of the toxic gas isolation state are more restrictive, and will override the actions of the emergency radiation state.

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INDIAN POINT 3 B 3.7.1] 3 Revision 3

CRVS B 3.7.11 BASES BACKGROUND A single train will create a slight positive pressure in the, J9 (continued) .-control room. The CRVS operation in maintaining the control room habitable is discussed in the FSAR.-Section 9.9.(Ref. 1).

The CRVS is designed in accordance with Seismic Category I requirements.

The CRVS is designed to maintain the control. room environment for 30 days of continuous occupancy after afDesign Basis Accident (DBA) without exceeding a 5 rem whole body,'dose or 30 rem to the thyroid.

APPLICABLE SAFETY ANALYSES The. CRVS active components are arranged in redundant, safety related ventilation trains. :The location of components and-ducting within the control building envelope ensures an adequate supply of filtered air to all areas requiring.access. The CRVS provides airborneradiological protection for the control room, operators, as demonstrated by the control room accident dose analyses for the most limiting designf'basis accident (i.e., DBA LOCA) fission product release presented in the, FSAR. Chapter 14- (Ref.. 2).

Radiation monitor R-1 is not required-for the'Operability of the Control Room.Ventilation System because control room isolation is initiated by the safety injection signal in-MODESJ, 2, 3., 4. and control room isolation is not required-for maintaining radiation exposure within General Design Criteria.19 limits following a fuel handling accident or gas-decay-tank rupture.-.

The worst'case active failure of a component'of the CRVS, assuming a loss of offsite power, does not impair.the ability-of the system to perform its'design function. However.,the original CRVS design was not requiredto-meet single failure criteria and. although upgraded from the original design. CRVS does not satisfy all requirements in" IEEE-279 for single failure tolerance.' -

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..I INDIAN POINT 3 B 3.7.11 - 4 RevisPion 3

CRVS B 3.7.11 BASES

> APPLICABLE SAFETY ANALYSES (continued)

Each of the automatic`dampers that are common to both trains is

-positioned in the fail-safe'position (open or closed) by either of the redundant actuation channels. -

The CRVS satisfies Criterion 3 of 10 CFR 50.36.

LCO Two CRVS trains are required to be OPERABLE to ensure that at least one'is available. Total-system failure could result in exceeding a dose of 5 rem whole body or 30 rem to the thyroid of the control room operator in'the'event'of a large radioactive release.

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The CRVS is considered OPERABLE when the individual components necessary to limit operator exposure are OPERABLE in both trains. A

CRVS train is-OPERABLE when the associated
a. Filter booster fan and an air-conditioning unit fan powered from the same safeguards power train are OPERABLE;
b. HEPA filters and charcoal adsorbers are not excessively restricting flow, and are capable of performing their filtration functions;.and
c. Ductwork, valves, and dampers are OPERABLE. or in the incident mode-and air circulation can be maintained.

In addition, the control room boundary must- be maintained. including.

-the integrity of the walls, floors. ceilings. ductwork, and access doors. - -

In the event that tracer gas testing identifies unfiltered inleakage in excess of limits established in applicable dose consequence-analyses, SCBA and K] pills may be implemented as compensatory measures as long as an evaluation concludes that the operator dose limits ofGDC-19 continue to be met.

Instrumentation for .toxic gas monitoring-is governed by the IP3 Technical Requirements Manual (TRM) (Ref.: 4) and is not included in the LCO.

- -Note thattherequiredecirculation_rates-are demonstrated with

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- - -- surveillance-tests-conducted -with -the-air-conditioning.system -(CRACS) __

~~~~~~~~-15-_~i~-: --- nino-p-erabl'e7-CRACS--fan--;,1 wi-afCEct the lP:_.;~,

prtng- '-I' INDINPOINT 3 B 3.7.11 5ntinyi 3eds INDIAN POINT 3 B 3.7.1) - 5 Reyvision 3

CRVS B 3.7.11 ;

BASES

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) LCO balance of the CRVS due to interconnected ductwork. Therefore, if (continued) the fan associated-with one of-the air-conditioning units governed by LCO,3.7.12 is inoperable; Conditions in both LCO 3.7.11, Control Room Ventilation System, and LCO 3.7.12, Control Room Air Conditioning System (CRACS), will apply.

APPLICABILITY InMODES 1. 2, 3. 4 CRVS must be OPERABLE to limit operator exposure during and following a DBA.

The CRVS is not required-in MODE 5 or,6, or during movement of irradiated fuel assemblies and core-alterations because analysis indicates that isolation of the control :room is. not required for maintaining radiation exposure within acceptable limits following a fuel handling accident or gas decay tank rupture.:

Administrative controls address the role of the CRVS in maintaining control room habitability following an event at Indian Point Unit 2.

ACTIONS A.] I When one CRVS train is inoperable, action must be taken to restore OPERABLE status within 7 days. In this Condition; the remaining OPERABLE CRVS train is adequate to perform the control room protection function. However, the overall reliability is reduced because a failure in the OPERABLE CRVS train could'result in loss of CRVS function. The 7 day Completion Time is based on~the low probability of a DBA occurring during this time period, and ability of the remaining train to provide the required capability.

B.]

When neither CRVS train is Operable, action must be taken to restore at least one train to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Completion Time is acceptable because of the low-probability of a DBA occurring during this time period.

(continued)

INDIAN POINT 3 B 3.7.11 - 6 Revision 3

CRV S B 3.7.11 BASES ACTIONS C.1 and C.2 (continued)

IfRequired Actions A.1 or 8.1 are not met within the required Completion Time, the unit must be placed'in a MODE-that minimizes accident risk. To a~ch~ieve this status. the u~nit must be~placed-in at least MODE 3 within6~holbis, a~nd 'in-MODE 5 w~ithini3 hours'. The allowed Completion Times'-ar~e'reasonable. bse ooprtn experience. to reach-the required unit conditonsfrmulpoe conditions in an orderly manner and w4ithiout challenging unit systems.

SURVEI LLANCE REQUI REMENTS SR3.7.11.1 St~andby systems should be checked periodically to ensure that they

-function properly.' As the env'ironment'and normal operating conditions on this system are not 'tbo severe, testing each train once every month provides an adequate'check 'of this 'system. NotethtaRVtri "includes-both the filt'er'bo~oster fan and-;an air-conditioning unit fan powered from the same .safeguards power train. The 31.day Frequency is based'on the 'reliability of the equipment'and the two train redundancy availability.'. -

SR 3.7.11.2 This SR verifies that the required CRVS te'sting 'is' performed in accordance with the Ve'ntilat'ion Filter Testing Program (VFTP). The CRVS fi'lter tests are in accordance with the sections of Regulatory Guide 1.52 (Ref. 3) identified in the VFTP.: The-VFTP includes testing the performance of the HEPA filter, charcoal adsorber efficiency.

minimum flo -rate, a'nd te-physical properties of the activated charcoal'. Specific test Frequencies and additional information are discussed-,in det~ail in the VF-TP.

-(conti nued)'"

INDIAN POINT 3 B 3.7.12 7' Revision 3

CRVS B 3.7.11 BASES SURVEILLANCE REQUIREMENTS (continued)

SR 3.7.11.3 This SR verifies that each CRVS train starts and. operates on an actual or simulated actuation signal. The Frequency of 24 months is based on operating experience which has demonstrated this Frequency provides a high degree of assurance that the booster fans will operate and dampers actuate to the correct position when required.

SR 3.7.11.4 This SR verifies the integrity of the control room enclosure. and the assumed inleakage rates of the potentially contaminated air. The control room positive pressure, with respect to potentially contaminated adjacent areas, is periodically~tested to verify proper functioning of the CRVS. During theoperation 'in'the incident mode with outside air makeup (i.e. 10'incident mode).the CRVS is designed.

to maintain the control'room at a slight positive pressure with respect to adjacent areas in order to prevent, unfiltered inleakage.

The CRVS is designed to maintain this positive pressure with very low volumes of outside air makeup. Due to the difficulty of adjusting and maintaining the flow dampers to provide a low flow, it was determined that the damper should be adjusted to providea flow of approximately 250 cfm (2.5% outside air makeup). Note that'the'higher the volume of outside air makeup to the Control Room, the higher the thyroid dose to the operators during an accident. The acceptance criteria of 400 cfm (4.0% outside air makeup) is the volume used.in the Control Room dose assessment.

The SR Frequency of 24 months on a staggered test basis is acceptable because operating experience has demonstrated that the control room boundary is not normally disturbed. Staggered.testing is acceptable because the SR is primarily a verification of Control Room integrity because fan operation is tested elsewhere.

s ___H .,..-- ...---- *- _ __*_ K _t ~ u dV INDIAN POINT 3 B 3.7.13 - E Revision.3

CRVS B 3.7.11 BASES REFERENCES 1. FSAR, Section 9.9.

2. FSAR, Chapter 14.
3. Regulatory Guide 1.52, Rev. 2.
4. IP3 Technical Requirements Manual.

I.

k, INDIAN POINT 3 B 3.7.11 - 9 Revision 3

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