ML090400254
| ML090400254 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 04/01/2008 |
| From: | Entergy Nuclear Operations |
| To: | NRC Region 1 |
| John Richmond | |
| References | |
| IR-08-03 | |
| Download: ML090400254 (5) | |
Text
SI30 lAppendlx R Diesel Generetor and Electrical DistributionSystem 3.8.0 3.8 ELECTRICAL POWER 3.8.8 SBO I Appendix R Diesel Generator and Electrical DistributionSystem TRO 3.8.6 The SBO I Appendix R Diesel Generator and Electrical Oistributlon System shall be OPERABLE APPLICABILITY: MODES 1,2, 3.and 4
-__.l__-___-l-------___.._____ NOTES-- _.1__--_---_-_--11---I I 1: Portions of the electrical distribution system are also governed by Technical Specification 3.8.
2: TRO 3.0.0 is not applkable.
8.2 Be In MOO 4 SURVEILLANCE REQUIREMENTS I
SURVEILUNCE FREQUENCY TRS 3.8.8.1 Verify fhe fuel oil storage tank contains 3 12,500 gallons 7 days of usable fuel oil reserved for the diesel.
I I TRS 3.8.8.3 I Veri% indlvIdual battery voltage $= 12V I 31 days TRS 3.8.8.4 Verify the battery charger output voltage >= 24V and 31 days output current <= 2Amps
SBO lAppendlx R Diesel Generator and Electrical Distribution System 3.8.8 SURVEILLANCE REQl TRS 3.8.8.5 TRS 3.8.8.6 le and analyze fuel oil for the SBO / Appendix R I to ensure applicable standards are met.
TRS 3.8.8.7 TRS 3.8.8.8 from the SBO I Appendix R diesel to the App R Bus loads, to the SBO Bus loads, and to Unit 3 SBO diesel bus loads.
TRS 3.8.6.9 Technical Requirements Manual URM) (continued)
Indian Point 2 3.8.8-2 Revision 1
SBO /Appendix R Diesel Generator and Electrical Distrlbution System 3.8.B
-BASES BACKGROUND 10CFRSO Appendix R requires that alternative or dedicated shutdown capability provided for a speciflc fire area shall be able to achieve and maintain subcritical reactlvity conditions in the reactor, malntain reactor coolant inventory, achieve and maintain hot standby.conditions. achieve cold shutdown within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and malntain cold shutdown conditions thereafter. 10 CFR 50.63 requires the plant Lo be able to wlthstand a station blackout (SBO),
as defined In 10 CFR 50.2, using an alternate AC power supply. IP2 elected to Install a SBO I Appendix R diesel generator and associated switchgear necessary to achieve and maintain cold shutdown conditions independent of the normal safeguards and instrumentation power supplies and to function as the alternate ac power supply operated from outside the Control Room.
APPLICABLE S A F E F ".
The lndlan Point Unit 2 alternative shutdown capability consists of an arrangement of 6.9KV and 460V ac switchgear, 480V ac motor control centers, power cables, 480V ac power transfer switches, 120V ac distribution panels, instrumentisolationand power aabinets, local instrument indication cbblnets and associated Instrument cables designeddDprQVid8an alternative safe shutdown capabifity. The Appendix R diesel power system is desighed to be independent and sufficiently Isolated from the existing emergency power system to ensure the availability of power to the Safe shutdown'pumps and instruments of concern In the event of fires.
The SBO /Appendix R Diesel also supports compliance with Station Blackout (SBO) rule. The new alternate AC power supply meets the crlteria (Reference 1) because the power supply and distribution is protected from severe weather (shielded by structures or buried), support services (e.9.. air and DC) are independent, it is well in excess of the approximately 2,072 e SBO SER (Reference Z ) , system reliabflitywill be maintained at 0.95Using NSAC-108 m nit is capable of started and loaded within one hour. It is not required to be qtarted f rol Room to meet this.
swltchgear~l2FD3and 12RW3. These loads consist of:
- One component cooling water pump (#23)
- One service water pump (#23 or 24)
- One channel of essential process monitoring instrumentation
- One RHR pump (through post-fire repairs)
The SBOH brea ), that in turn feeds the 6.9 kV Busses 5 alternate offsite power
' I TRO The SBO / Appendix R diesel generator must be operable to provide an independent source of power t6 alternate safe shutdown pumps and instrumentation as well as SBO equipment and instrumentation.An OPERABLE SBO /
Appendix R diesel generator consists of the djesel generator, support equipment such as startlng batteries, fuel
SBO /Appendix R Diesel Generator and Electrical Distribution System 3.8.8 oil, cooling water, as well &the electrical distrlbution sygern. . -
APPblCABlLlrY 10CFRSO Appendix R requires that one train of equipment necessary to achieve MODE 3 from either the control room or emergency control station(s3 must be maintained free of fire damage by a single fire lnduding an exposure fire. With the Appendix R diesel or Its electrical dlstribution system inoperable, this condition cannot be met for specific fires, The SBO events are postulated during plant operations and coping studies are performed for conditions at power. Therefore the LCO requirements for Appendix R are controlllng. Therefore the SBO /
Appendix R dlesel is required prlor to going above MODE 5.
This Technical Requirement allows changes in operating MODE while relylng on Required Actlons. Allowance of this exception 10 TRO 3.0;B.is.ba ent requiring the use of such systems and reasoning that such systems can operation without a significant risk of a spurious plant trip.
ACT I ON S A.
- With-theAp e; required Ihe-up to the 13.8 kV Bus inoperable, red to OPERABLE status within 7 days or an independent power supply meeting current requirements must be made available. The allowable Outage Time ( A M ) Is the same as the AOT approved by the NRC for compliance with SBO / App R prior to TS relocation The focus of this TRM is to establish actions to ensure the operability of the S60 I Appendix R diesel generator and electrical distribution system is maintained in accordance with the bounds of the IP2 license.
B ~ If the requiremen ithin the allowed outage time, then compliance are not met. The plant must be placed in a condition where these requirements are not applicable and therefore th nt must be placed in MODE 5. The time requirement of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> for MODE 3, 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> for Mode '36hours for MODE 5 is selected to be consistent with the NRC requirements previously approved for gas turbines and found in the prior revision
. TRS 3.8.8;; . -- The-Appendix R diesel uses 172 gdlons offuel per-hour when loaded at peak capacity,- We Appendix R event requlres the Apendix R Diesel to run for 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. Therefore there must be 2 12,500 gallons of usable fuel in the tank dedicated to the diesel. This fuel is normally Ildlng. Other fuel oil may be credited i i TRS 3.8.8.2 inspect the SBO I Appendlx R diese , including check of the dlesel fuel oil level and the,dosed cooling water system temperature, This surveillance Is consistent with industry practice. When the battery is checked it should be looked at for unacceptable
+ signs such as cracking, bulging, corrosion, leakage, or an electrolyte level not above the TRS 3.8.8.3 This Surveillance verifies the batteries are maintained at 12 V. The capability of the batteries 10 perform8 function is estabkhed when they are used to start the SBO /Appendix R diesel every quarter.
TRS 3.8.8.4 This surveillance establishes that the battery charger is operatlng at the required parameters
SBO /Appendix R Diesel Generator and ElectricalOistributlon System 3.8.0 TRS 3.8.8.5 Start and run the SBO / Appendix R diesel generator for a period of time sufflclent to reach stable operating kmperatures. DEMONSTRATE the proper operation of the output breaker.
Starting and bringing the SBO /Appendix R diesel to operatlng conditions on a quarterly frequency Is consistent with the Alternate AC Power Criteria Identified in Appendix B section of NUMARC 87-00, Guidelines and Technical Bases For NUMARC Initlatives.
TRS 3.8.8.6 -. sample and analyze fuel oil from dedicated bulk storage according to s meets the Alternate AC Power Criteria identlfied in Appendix B section B8(c) of NUMARC 87-00, Guidelines and Technical Bases For NUMARC Initiatives. The frequenay of once per 6 months is deemed sufficient, TRS 3.8.6.7 Start the SBO /Appendix R diesel generator, line it up and load it between 2335 to 2435 kW.
and run for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Starting and loading the Appendix R diesel to rated capaclty on ent wlth the Alternate AC Power Criterla identified in Appendix I Bases For NUMARC TRS 3.8.8.8 e up and.provid.9, p in 60 minutes from the S80 /
Ix fl loads and SBO loads. This inducks lineup through 2 FD3 and 12 RW3 switchgear or the SBOH breaker to the c er to breaker SBOL and the SBO /APP switchgear.
made thr0ugh.a combin of tests and simulated actions.
for the SBO I Appendix R diesel must be estimated and then the time to initiate actions to line up and provide power must be demonstrated. For the Appendix R event, the demonstration must include the ability to transfer from the cooling water of the CWST to the servlce water cooling. This transfer must be demonstrated to be made within lwo hours to assure adequate cify water (see Reference 3). DEMONSTRATE the ability to line up and provide p,ower to the Unit 3 Appendix R diesel loads. This TRS 3.8.8.9
- 1. NUMARC 87-00,Guidelines and Technical Bases for NUMARC Initiatives Addressing Station Blackout at Light Water Reactors, Appendix B ._- ~ -. . . * - -_ _.--
- 2. NRC letter of November 21.1991 regarding Safety Evaluation of SBO Response (TAC M68556)
TOTAL P a06