ML18029A834

Proposed Tech Spec Table 4.2.B,allowing Logic Surveillance Tests to Be Run During Shutdown Conditions Once Per Operating Cycle

ML18029A834
Person / Time
Site:	Browns Ferry
Issue date:	08/28/1985
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML18029A833	List: ML18029A832 ML18029A834
References
TVA-BFNP-TS-212, NUDOCS 8509060072
Download: ML18029A834 (15)

Text

ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION REVISIONS BROMNS.FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 (TVA BFNP TS 212)

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PROPOSED CHANGES UNIT 1

TABLE 4.2.B (Continued) r function functional Test Cal !br a c ion Iastruneat Chaclc lnstrunent Channel

?IPCI Turbine Stean Line Htjth Flou once/3 +oaths noae lnstrunent Channel llPCI Stean Line Space High Teaperature once/) aoncha nona Core Spray System Logic once/ operating cycle N/A kCIC Systea (loitiating) Logic once/ operating cyc) e :I/A N/A RCIC Syatea (!aolacioa) Logic once/ operating cycle H/A RPCI Syatea (Initiating) Logic once/ operating cycle 8/A HPCI System (Isolation) Logic once/ operating cycle . (6)

?l/A ADS Logic ?I/A once/ operatinR cycle K?CI (Iaitiatiag) Logic once/ operating cycle (c) H/A lJCI (Cones!~at Spray) Logic once/ operating cycle Core Spray Spatula Auto Iaitfatioa Inhibit (Core'Spray Auto Inittacioa) once/ operating cycle N/A 5/A LtCI Auto taiciatioa tahibfc (L?CI Auto Inicfatioa) W/A N/A

PROPOSED CHANGES UNIT 2

TASLK 4.2.g (Continued)

Function Functional Test Cafibratfon Inotnsmcnt CheA Instrment Channel

)PCI Turbine Stean Line High Plo< once/3 mntho Instrunent Channel BPCI Stean Line Space High Tenperature once/3 conths nona Core Spray System Logic once/ operating cycle (6) .')/A RCIC Syotea (lnitfating) Logic once/ operating cycle '.)/A N/A tCIC Syoten (Isolation) Logic once/ operating cycle (6) H/A P

QFCI Systea (Initio'ting) Logic once/ operating cycle (6) . ))IA HFCI Syoten (Isolation) Logic (6) ))/A once/ operating cycle ADS Logic once/ operating cycle (6)

LPCI (Initfatfng) Logic once/ operating cycle (C)

LPCI (Contaf~nt Spray) Logic once/ operating cycle (6) H/A Core Spray Syoten Auto Inftiation Inbfbft (Core Spray Auto once/ operating cycle ))/A ))/A LKI Auto Inftfotfon inhibit (LPCI Auto Inftfntfon) once/ operating cycle (7) I)/h

PROPOSED CHANGES UNIT 3

TABLE 4 ~ 2.B SURVEILLANCE REQUIRENENZS jOR INSTR(S(ENTATION THAT INITIATE OR CONTROL THE CSCS Function Functional Test Calibration Instrume t Check Instrument Channel Suppression Chamber High Level once/3 months none Instrument Channel Reactor High Mater Level once/3 months once/day Instnurmnt Channel RCIC Turbine Steam Line High Plcw once/3 months none Instrument Channel RCIC Steam Line Space High Teu perature once/3 months none Instrument Channel HPCI Turbine Steam Line High Plov once/3 months none Instrument Channel HPCI Steam Line Space High Temperature once/3 months none Core Spray System Logic once/ operating cycle (6) g RCIC System (Initiating) Logic once/ operating cycle N/A RCIC System (Isolation) Logic once/ operating cycle (6) N/A HPCI System (Initiating) Logic once I, onerg tH ne rye ]e (6)

HPCI System (Isolation) Logic once/ operating cycle (6) N/A ADS Logic once/ operating cycle (6)

LPCI (Initiating) Logic once/ operating cycle (6) N/A

TABLE 4 ~ 2 8 SURVEILLANCE REQUIREMENTS FOR INSTRUNENTA Iotas THAT INITIATE OR CONTROL THE CSCS Function Functional Test Calibration Instrument Check LFCI (Containment Spray) Logic Once/ Operating Cycle (6)

Core Spray Loop A Discharge N/A once/6 months once/day Pressure (PI-75-20)

Core Spray Loop B Discharge N/A once/6 months once/day Pressure (PI-75-48)

RHR Loop A Discharge Pressure N/A once/6 months once/day (PI-74-5l)

RHR Loop B Discharge Pressu e N/A once/6 months once/day (PI-74-65)

Instrument Channel- Tested during N/A N/A RHR Start functional test of RHR pump (refer to section 4.5.B) .

Instrument Channel- once/month ance/6 months N/A cn Thermostat (RHR Area Cooler Fan)

Instrument Channel- Tested during N/A N/A Core Spray A or C Start functional test-of core spray (refer to section 4. 5.A) .

Instrument Channel >> Tested during N/A N/A Core Spray B or D start functional test of oore spray (refer

ENCLOSURE 2 DESCRIPTION, JUSTIFICATION, AND SAFETY ANALYSIS BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 D~escei ton Page 99 for units 1 and 2 Pages 95 and 96 for unit 3 The proposed amendment would revise the following functional test frequencies listed in table 4.2.B from "once/6 months" to "once/operating cycle": Core Srapy logic, RCIC (Initiating and Isolation) logic, HPCI (Initiating and isolation) logic, ADS logic, LPCI (Initiating and Containment Spray) logic, Core Spray Auto Initiation Inhibit, and HPCI Auto Initiation Inhibit.

Justification Because of test complexity, number of temporary alterations and administrative controls, these tests are inherently prone to mistakes. These proposed technical specification revisions will allow performance of these complex logic surveillance tests during unit shutdown.

Safet Anal sis Conducting ECCS and RCIC logic surveillances only during shutdown conditions will reduce the risk of inadvertently discharging reactor coolant and/or over pressurizing low-pressure emergency core cooling systems. These tests are inherently prone to mistakes because of test complexity, number of temporary alterations and administrative controls. NUREG-0123, Revision 3, BWR Standard Technical Specifications (STS) 4.5.1c and 4.5.1d specify that system functional tests which include simulated automatic actuation of the system should be performed "at least once per 18 months." Browns Ferry units 1, 2, and 3 are currently on a schedule of 18-month operating cycles. A surveillance frequency of "once/operating cycle" is consistent with the BWR STS and also will accommodate an operating cycle which might be shorter or longer than 18 months.

ENCLOSURE 3 Determination of No Significant Hazar ds Consider ation Browns Ferry Nuclear Plant Units 1, 2, and 3 Description of Amendment Request:

The amendment would revise the following funct;onal test frequencies listed in Table 0.2.B to "once/operating cycle": Core Spray logic, RCIC (Initiating and Isolation) logic, HPCI (Initiating and isolation) logic, ADS logic, LPCI (Initiating and Containment Spray) logic, Core Spray Auto Initiation Inhibit, and LPCI Auto Initiation Inhibit.

Basis for Proposed'o Significant Hazards Consideration Determination:

The Commission has provided guidance for the application of criteria for no significant hazards consideration determination by providing examples of amendments that are considered not likely to involve significant hazards considerations (48 FR 14870). These examples include: "(vi) - A change which either may result in some increase to the probability or consequences of a previously analyzed accident or reduce in some way a safety margin, but where the results of the change are clearly within all acceptable criteria with respect to the system or component specified in the Standard Review Plan (SRP): For example, a change resulting from the application of a small refinement of a previously-used calculational model or design method."

The proposed amendment is encompassed by this example in that the revision reflects the requirements established in the Standard Technical Specifications (NURE0-0123, Revision 3). as endorsed by Chapter 16 of the Standard Review Plan. Therefore, TVA proposes to determine that the proposed amendment does not involve a significant hazards consideration.

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