ML20062B184
| ML20062B184 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 10/12/1990 |
| From: | Pierson R Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20062B187 | List: |
| References | |
| NUDOCS 9010240103 | |
| Download: ML20062B184 (5) | |
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.S, UNITED STATES '
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g NUCLEAR REGULATORY COMMISSION J.
WASHINGTON. D. C. 20666
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P.ONTICELLO h0 CLEAR GENERATING PLANT b?.E@f[y,1,J0,(([][))J 9?E?M]@,[]ffMf Anendtr.ent No. 75 License No. DPR-22 1.
The f;uclear Rttulatory Connitsion (the Cone.ission) has found.that:
A.
The app 11 cation for aniendn(nt by Northern States Power Coinpany (the t
licensee)datedJuly 31, 1990 con. plies with the standards and i
1 requirenents of the Aten;ic Energy Act of 1954, as anended (the Act),
and the Concission's rules and regulations set forth in 10 CFR
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Chapter I; O.
The facility will operate in conforniity with the application, the provisions of the Act, and the rules and regulations of the Conn issioti; C.
Thereisreescr.ableassurance(i)thattheactivitiesauthorizedby.-
this anendo.ent can be conducted without etidar:gering the health and a
safety of the public, and (ii) that-such activities will be conducted in con. plier.r.e with the Consrission's regulations; a
D.
The issuan(.e of this aniendnent will r,ct be ininiital to the conaion defense and security or to the health and safety of the pblic; and E.
The issuance of this an.tndnent is in accordance with 10 CFR Part 51 of the Conniivion's regulations and all applicable requirernents have been.setisfitt, i
2.
Aci.ordingly, the-license is anended by changes to the Technical SpecVications as indicated in the attachnent to this license arnendirent, and paragraph 2.C.2 of Facility Operating License No. DPR-22 is hereby an. ended to read as follows:
l 9010240103 901012 PDR ADOCK 05000263 P
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,T,e3hn,1,c,a,1, SteSifications i
The Technical Specificaticris contained in Appendix A, as revised thrcugh An+ndment No.-75, are hereby incorporated in the license.
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The licensee shall operate the facility in accordance with the
.l Technical Specifications.
3.
This license arnendrient is effective as of the date of its issuance.
FOR THE NUCLEAR REGULATORY COMMISS10tl l
Robert C. Pierson, Director-Project Directorato III-I Divisito cf Reactor Projects - III, IV, V -
8 Special Projects 1
Office of fiuclear Reactor Regulation Att achrier t:
Cbtrsts to tbe Technical Specificatiens Date of Issuerce: October 12, 1990 i
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ATTACWEN];,Tp,}.] CENSE, A 1,EpDfEp,T,Npu 75 FACILITY OPERA 11NG LICENSE NO. DPR-22 DOCKET N0. 50-263
- Revise Apper> dix A Technical Specifications by ruoving the pages identified below arid insertirig the att6ched pages. The revised pages are ider.tified by ariendr.er.t riumber and ccr.t61n n.argir,61 lines indicating the are6 of change.
~ Insert RepJace 202 202 I
204 204
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j 3.0 LIMITING CONDITIONS FOR OPERATION 4.0 SURVEILIANCE REQUIREMENTS -
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c.
For the diesel generators to be c.
At least once-each Operating Cycle considered operable, there shall be
-during shutdown simulate a loss of offsite f
.l' a minimum of 32,500 gallons of diesel power in conjunction with an ECCS actuation fuel (7 days supply for 1 diesel gen-test signal. and:
l erator at full load @ 2500 KW) in the diesel oil storage tank.
1.
Verify de-energization of the emergency busses and load shedding from the emer-l gency busses.
2.
Verifying diesel starts from ambient conditions on the auto-start signal and i
is ready to accept emergency loads within ten seconds, energizes the emergency busses with permanently connected loads, energizes the auto-connected emergency loads in proper time sequence, and operates for greater than five minutes while its generator is loaded with the emergency loads.
d.
During the monthly generator test, the diesel fuel oil transfer pump and diesel oil service pump shall be operated.
k Once a month the quantity of diesel fuel e.
g available shall be logged.
23 f.
Once a month a sample of diese.) fuel shall be taken and checked for quality, e
3.9/4.9 202
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Bases 3.9:
The general objective is to assure an adequate supply of power with at least one active and-one standby source of power available for operation of equipment required for a safe plant shutdown, to maintain the plant in a safe shutdown condition, and to operate the required engineered safeguards equipment following an accident.
AC L anutdown requirements and operation of engineere? safeguards equipment can be provided by either of the two standby sources of power (the diesel generatota) or any of the three active sources of ' power (No. IR, No. 2R, or No.1)Jt transformers). Refer to Section 8 of the USAR.
To provide for maintenance and repair of equipment and still have redundancy of power sources, the requirement of one active and one standby source of power was established. The plant's main generator
.is not given credit as a source since it-is not available during shutdown.
The plant 250 V de power is supplied by two batteries. Most station 250 V loads are supplied by the original station 250 V battery. A new 250 V battery has been installed for HPCI loads and may be used for other station loads in the future.
Each-battery is maintained fully charged by two associated chargers which also supply the normal de requirements with the batteries as a standby source during emergency conditions. The plant 125 V de power is normally supplied by two batteries, each with an associated charger. Backup chargers are available.
The minimum diesel fuel supply of 32,500 gallons will supply one diesel generator for a minimum of seven days of full load operation. The diesel fuel oil requirement of 32,500 gallons ensures that one emergency diesel generator can run for 7 days at full load (2500 KW).
The amount of fuel oil necessary to run one emergency diesel generator for 7 days is 31,248 gallons. The difference between these two volumes allows for 3,
instrument inaccuracy, tank volume uncertainties, and the location of the suction pipe.- Additional diesel g
fuel can normally be obtained within a few hours. Maintaining at least seven days supply is therefore conservative.
ojf In the normal made of operation, power is available from the off-site sources. One diesel may be allowed g
out of service based on the availability of off-site power and the daily testing of the remainin6 diesel generator. Thus, though one diesel generator is temporarily out of service, the off-site sources are o
available, as well as the remaining diesel generator. Based on a monthly testing period (Specification 4.9), the seven day repair period is justified. (1)
P (1) " Reliability of Engineered Safety Features as a Function of Testing Frequency", I.M. Jacobs, Nuclear Safety, Volume 9. No. 4, July - August 1968.
5 3.9/4.9 BASES 204
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