ML19274E692

Monthly Operating Rept for Mar 1979

ML19274E692
Person / Time
Site:	Pilgrim
Issue date:	04/11/1979
From:	Gaffney C BOSTON EDISON CO.
To:
Shared Package
ML19274E690	List: ML19274E689 ML19274E692
References
NUDOCS 7904170182
Download: ML19274E692 (6)

Text

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BOSTON EDISON COMPANY PILGRIM NUCLEAR POWER STATION SlHMARY OF OPERATIONS FOR MARCil, 1979 The month of March began with the unit operating at 100% power.

On Saturday, March 3,1979, the unit was reduced to 50% pcuer for back-washing the main condenser. At the conclusion of the backwash the unit returned to 100% power.

The unit remained at 100% power, until Sunday, March 25, 1979, at which time the reactor power Icvel was reduced to 50% for a backwash of the main condenser.

While increasing power, following the backwash, the reactor scrammed from a low water level condition at 1045 hours0.0121 days <br />0.29 hours <br />0.00173 weeks <br />3.976225e-4 months <br />.

The decision was made to keep the unit out of service in order to perform surveillance tests and allow maintenance to replace the "A" 6 "D" SRMs and work on the connector fc- the "A", I.R.M.

At the conclusion of the surveillance tests and maintenance work the reactor was started up in power on Thursday, March 29, 1979 and taken critical at 1041 hrs.

The reactor scrammed at 1541 hrs due to a I.R.M. high flux condition. The reactor was re-started and taken critical at 1710 hrs. The unit was syn-chronized onto the grid at 0140 hrs. on March 30, 1979.

Instrumentation and Control Technicians traced the low water level scram condition of March 25th to a ncisy relay (settle relay) and a noisy cable in the Reactor Manual Control System which generated a suf ficiently high noise level to cause the "B" feedwater regulator to interpret it as a high level input signal.

The month closed out with the reactor power level at 90% and increasing.

The monthly capacity factor was 80.2% with a Plant Availability of 85.1%.

00A 1701 y

REFUELING INFORMATION The following refueling information is included in the Monthly Report as requested in a letter to Mr. G. C. Andognini dated January 18, 1978.

For your convenience, the information supplied has been enumerated so that each number corresponds to equivalent notation utilized in the request.

1. The name of this facility is Pilgrim Nuclear Power Station, Docket No. 50-293.

2. Scheduled date for next Refueling Shutdown: January 1980.

3. Scheduled date for restart following refueling: April 1980.

4.

5. Due to their similarity, requests 4, 5 & 6 are responded to collectively.

6. The fuel, which is presently expected to be loaded during the next scheduled shutdown, may be reloaded fuel of a new design and may therefore require a proposed license submittal and technical specification change. It is not possible, however, to supply pertinent information on dates. As inf o rmat ion concerning fuel design, core configuration, Operational Review Committee determinations, proposed licensing action, and technical specification submittals become available, it will be forwarded to you.

7. (a) There are 580 fuel assemblics in the core.

(b) There are 580 fuel assemblies in the spent fuel pool.

8. (a) The station is presently licensed to store 2320 spent fuel assemblics.

The actual spent fuel storage capacity is 1170 fue' amblics and new high density fuel storage racks are in the process seing installed.

(b) The planned spent fuel storage capacity is 2320 fuel assemblies.

9. With present spent fuel in storage, the spent fuel pool now has the capacity to accommodate an additional 580 fuel assemblics (one core).

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AVEl:4GE DAILY l' NIT POhEli LEVEL DOCKET NO. _50-293 L' NIT Pilgrim #1 4-11-79 DATE C0\lPLETED gjy C.M. Caffney TELEPil0NE 1-617-746-7900 SiONTil March 1979 DAY AVER ACE DAILY POWER LEVEL DAY AVER AGE D \lLY POWER LEVEL

( Ath e-Neil (31We-Nct) 1 659. 658.

17

, 659. 660.

- gg 3 658. I9 660.

4 442. 660.

20 ~

2j 658.

6 657. ,, 660.

7 659. 659.

23 8 659. ,

659.

25 243.

10 659. 0. ,

26 658, 0.

11 27 12 659, 0.

2S 13 661. 0.

29 14 660. 328.

30 15 661. 551.

31 16 660.

INSTRUCTIONS On tha ictr n hst the ana; Ja:h unn power !ese! m \thNe,t for each day in the reportm; month. Gin pu'e to the nc.u:st sitd: m:';s u;t.

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• OPI:It ATING D AT A ItEPOl!T DOCl;l.T NO. 50-293 DAIE 4-11-79 C051Pl.l.l LD ity C.M. Ga f f ney TI:1.1.PlIONE l-617rl!th.-7900 Ol'EliYl:NG MTA1 US Pilgrin #1 Notc5 g , un;g 33nu..

7. Iterottin::l'etim!. March 1979

3. I.icensed 'l twimal Pot er (51% O:

1998.

4. Nameplate Ita:ing. (Gtms 51We):

678*

655.

• S. Design Electric.d Itttin t(Net SIWE):

6. Slasimum Dependable Cap.: city (Gross 51We): 690.

7. Slasirmun Dependa* Capacity (Net Sib'e): 670.

E. If Changes Oci.ur in Capacity llatings (Items Numtwr 3 Throur.h 7) Since 12t Report.Gise Itcasons:

None -

9. Power Lese! To hhich Itestricted.lf Any (Net SlWe): Nolte ._

10. Reasons for lies:ri:tions. If Any: N/A

'Ihis Stonth Ya..to.Date Cumulatise

11. Ilours in !!cpoicine Period 744.0 2160.0 55296.0

12. Number Of !!oursI!cactor Was Critical 646.8 2062.8 39110.5_

0.0 0.0 0.0 13.1 cactor !!c:ene Shutdnwn I!ours ,,

14. Ilours Generator On.Line 633.0 2049.0 37771.6

15. Unit iteserve Shutdown liours 0.0 0.0 0.0

16. Gross Thennal Ene:gy Gsnes.,ted ($1Wil) 1214376.0 3995136.0 62436936.0 17 Grow Electrical Ei .rgy Generated (?.lWii) 415760.0 1371000.0 20501474.0 IS. Net Electiie.al Ener:y Generated (MWil) 399792.0 1318855.0 19680419.0

19. Umt Senice l' actor 85.1 94.9 68.3

. 20. Unit Asail.:Inlity Factor 85.1 94.9 68.3

21. Unit Capacity faccer (IJ in ; MDC Net) 80.2 91.1 53.1

22. Unit Capacity Factor (Ilia;11Eit Net) 82.0 93.2 54.3

23. Uni: Forced Out:a.e !! oc _

14.9 5.1 10.5 _

24. Shut.lov.ns scheth. led Over Nest 6 Months ( Type. !hte, and Du.atmn of Each n None

25. If Shnt Doc.n At lied Ut !!croit Period. Estimr.ted Dite of St utup: Ilr11LOperatjnn _

26. Units In rest Status (Poor to Commeteul Operationi: ,

l'orecast At hi sed INilI A L Cit!'t :CAIITY IN!11 \l. I.L! L I!(ICI TY CO31MI:itCIAL Ol'l:1 A TION l' 8/~7 I

• os.us J1 it \jij ( a

PILGRIM : UCLEAR PC'<!ER STATIO:? Month yp cy

_'A._ 0R S/. fen

• REL/.TED 2'AI:'TF' ' ::CE 13 ~ E'! CC:OC:!E::T PAI.! J::CTIC: CAUSE FAI!;TE A!!CE CORRECTIVE ACTIO:: , , ,

~ , -,.3r,,.,. .-~.,.3..r a S S-+^--e i .

55 Snubbers 4-Leaking Unknown Tobetestedand/oh  !;one

!!one 4-Indicating 0 rebuilt 3 Scran Pilot 'i/A B U';A-: Replace Buna-; Progran initiated to schedule Valves (47) Aging 78-055/03L-0 parts parts changeout i

5  ! Scran Back-Up  !;/A BU';A-?; Replace Buna-?; Program initiated to schedule l Valve Aging 78-055/03L-0 t

parts parts changeout I t s

I 5 Discharge Vol  !!/A BU';A-:: Replace Buna-?; Progran initiated to sch~edule 78-055/03L-0 Vent & Drain Vlv Aging" parts I parts changeout i s 33 Diesel fire Failed starting Unknown Replaced failed  !;one  :;one pump solenoid coil component 61 l Diesel"A" Diesel was becoming Unknown sluggish Replaced governor Governors are to be replaced ;one j during refueling outages ,

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DCCKET NO. 50-293 .

UNIT SlitJTDOWNS AND POWER REDUCTIONS UNil N A!.:E Pilgrim F1 DuE 4-11-79 REf0! T MONT!! March 1979 CO.'.:Pl.ETED 3Y r" C, f f n me Ti LI l';IONE 1-617-746-7900

=- ei 3 :n .

_ 5 s,, p,, # 'e fE E 75j I 2fe"5cc E -to E"L Cause & Cor rectise 2E E?

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I 4 .2 5 cc laent ;7 'g n ,n in l

dE E j5g Report : n0 0 prescn, j{ccurrerice o

2 03/04/79 S 0.0 B 4 Main Condenser Backwash, Repair Steam Leaks and individual CRD Scram Times 3 03/25/79 F 111.0 H 3 Reactor Scrammed from water level control fluctuation.

l 1 2 3

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