ML20067D744

Revised Monthly Operating Rept for Sept 1982

ML20067D744
Person / Time
Site:	Fort Saint Vrain
Issue date:	10/06/1982
From:	Mcbride L PUBLIC SERVICE CO. OF COLORADO
To:
Shared Package
ML20067D729	List: ML20067D727 ML20067D744
References
NUDOCS 8212210112
Download: ML20067D744 (9)

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PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION lv MONTHLY OPERATIONS REPORT NO. 104 September, 1982 s

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• r This repcrt contains the highlights of the Fort St. Vrain, Unit 4 No. 1, activities operated under the provisions of the Nuclear Regulatory Commission Operating License DPR-34. This report is for the month of September, 1982.

1.0 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE AND MAJOR SAFETY R$LAlED MAINTENANCE 1.1 Summary Except for some minor short-term load reductions, the plant operated at 70% power until the end of the month. .

On September 30, while performing a surveillance on the plant protection system, a spurious trip caused a loop shutdown followed by a turbine trip and reactor scram.

This terminated about 31/2 months of continuous operation.

Plans are underway to complete required surveillances and make the necessary repairs to return to power operation.

1.2 Operations Pesctor power was generally maintained at about 70%

throughout the month with the following exceptions.

Reactor power was decreased to about 67% to remove 1A boiler feedpump from service to repair its discharge check valve. The 1A boiler feedpump was repaired, and power was increased to 70% on September 3.

At 1304 hours0.0151 days <br />0.362 hours <br />0.00216 weeks <br />4.96172e-4 months <br /> on September 8, a system frequency upset occurred causing a turbine and reactor power runback of about 30 megawatts. Plant power was returned to 70% by 1545 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.878725e-4 months <br />.

On September 27, between 0100 and 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, plant load was decreased to 180 MWe at the request of the system dispatcher. At 0835 hours0.00966 days <br />0.232 hours <br />0.00138 weeks <br />3.177175e-4 months <br />, there was a turbine runback to about 66% when a backup bearing water safety valve opened spuriously.

On September 30 at 0548 hours0.00634 days <br />0.152 hours <br />9.060847e-4 weeks <br />2.08514e-4 months <br />, while performing a Surveillance Test on the ultrasonic pipe rupture detection system, a spurious trip caused a Loop 1 shutdown. Rapidly decreasing main steam temperature in the remaining loop subsequently caused a turbine trip and a two-loop trouble scram.

. At the end of the month, the reactor was shutdown.

3 Surveillances, which require the plant to be shutdown to t

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? perform are being done, and work is in progress to prepare the plant for operation.

We are experiencing some difficulty with our condensate /feedwater systems. High and variable concentrations of chlorine in the domestic water supply appears to be causing rapid exhaustion of the makeup and condensate polisher resin. This results in decreased capability to make up to the condensate system, as well as increased consumption for regeneration.

On September 14, a mobile makeup domineralizer was brought on site. By September 18, this unit processed-300,000 gallons of water to regenerate all exhausted resins and fill the storage tanks. Although the domestic water supplier has indicated they are taking corrective measures, chlorine, as well as insufficient supply capability, remain to be problems.

A fire drill was conducted on September 13 in which the Platteville Fire Department participated. In addition, ,

fire drills were conducted on September 20 and on September 27.

Contract personnel began arriving on September 15 to begin

<' work on the refurbishment of the outside auxiliary boiler.

! i-Among other things, new internals are being installed in the upper drum, a heating coil is being installed in the lower drum, and brick work is being repaired.

Helium purification train IB broke through on September 22.

When the operators tried to isolate the train for i regeneration, it was found that HV-2302, the train inlet ,

valve, was bound up and would not close using the motor. ,

Attempts to close the valve using the the handjack were not successful. This valve is in a well in the top of the prestressed concrete reactor vessel and cannot be repaired until the reactor is shut down and depressurized to less than 100 psia.

A new replacement tube bundle for heater #5 arrived on site. The old heater #5 was moved down to the railroad bay on September 15. The shell was removed from it and the bundle was removed from the site.

Backup bearing water pressure control valves and safety valves centinue to cause problems. The system was out of service twice during the month to rebuild the safety valves. l e l 3 The main steam desuperheater drain lines between the level

control valves and the condenser has developed many leaks

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.) which resulted in emergency repairs during the month. A temporary repair was finally made by jacketing the line with furmanite.

The presence of reserve shutdown material in control rod drive region 27, confirmed in August, was evaluated by General Atomic Company. A conservative analysis indicated that the potential exists for operation in a mode outside the limits of LCO 4.1.3. A plot was provided by General Atomic Company to preclude such an occurrence, and we intend to operate in accordance with the plot until such time as reserve shutdown material is not present in region 27 or until a future analysis reveals another*

acceptable operating strategy.

2.0 SINGLE RELEASES OF RADI0 ACTIVITY OR RADIATION EXp0SURE IN EXCESS UF 10% OF THE ALLOWABLE ANNUAL VALUE None 3.0 INDICATION OF FAILED FUEL RESULTING FROM IRRADIATED FUEL

• EXAMINATIONS None 4.0 MONTHLY OPERATING DATA OEPORT s

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N 8^T^ '8PT octstrw. . 50-267

, Dart Octnhar 6.1487 ccMru:ra sr i.. M. McBride >

urms (303) 785-2224 '

ceru m e s: Arts

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1. emit s : _ Fort St. Vrain ,

2. saportins F.esed: 820901 +hrou9h 820930

3. ue 4 :n.c.at to e out): 842 1 .1 =.p14t. mattas (cron w .):, 342 __

3. s ism n.etrical metas cr.c w.7:~ 330 .

6. Mus== o.p.34 61. e cy (cel. w.): 342 _,

7. Maxi ua D pendable capacity of.c We}: 330  !

3. If chases occur is capacity Astins. (Ic.w sums.c 3 Through 7) stace het Rep rt, cir. Isa.on.:

None

9. Power L.v.1 To '4hich teucrict.d. If Any (Net $.): 231 -

10. samans for mastrictisoa. If any: NRC restriction of 70% oerdina resolution of temnerature fluctuations.

his Month T.a4 to Oat. Cmalativ.

11. Hours is Reportit.: F.rto4 720 _. 6.551 28.512

. ue.e of sours naaetor vu critical 701.9 4.169.4 18.747.8

u. anactor zuerm shuteown sours 0.0 0.0 0.0

14. acurs c nerator on-c.1=. 701.9 3.266.2 13.174.5

15. Unit Raserv. Shutdoon Hours 0.0 0.0 0.0

16. cros :horsu re.rsy c.n. rated (su) 407,778.9 1,842.485.5 6,776,430.3

17. crou n.ctrice za.esy c.a. rat.4 (wa) 149.021 635.548 2.326.904 is. x.t n.ecrica ca.esy c.n. rat., (sa) 140.362 581.845 2.136.104 ,

19. ::it s.rvie. Factor 97.5 44.9 46.2

10. cuit Availability Tactor 97.5 4 9 . Q,,,, 46,2

1. ente ca;acity rac.or (rets: x::c N.c) 59.1 76_o  ??.7

. cait capacity raeter (c tes :t2 s.c) 59.1 __

26.9 22.7

3. cait rar:.4 oucase anc. 2.5 10.7 29.5

24. Shutdowns Schadul.4 cv r 5.xt 6 .tcrhs (Trp. 3.te, and Duration of Zach): Maintenance outage -

821101 throuch 821215 - 1.080 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />. Plant recoverv - 821001 threann 321007 - 158

3. If 3 hut acvs at I:4 at anort 7.rt:4. ratimat.4 :,at. oc scartu, 821008** hou rs .

26. Taits In 7.st Status (Prior es Cc:::.rci.1 Operation): TJr. cast Acht vel

:A:. cu :ciz.: : N/A N/A

rt::Ar. nzc n:::7 N/A N/A ctw.rac:a:. cenA::ca N/A N/A

• • 821008 date reflects information as of September 30, 1982. Antic 1 pated startuo date is not determined as of this transmittal dated October 12, 1982. ___ - _.

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YSP-3 Acccchment-3A '

.s AVERAGE DAILY UNIT POWER LEVEL hm2

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. 4 Docket No. 50-267 -4 Unic Fort St. Vrain .

Date October 6. 1992 Completed By L. M McBrida Telephone (303) 785-2224 , s

s. s Month Seotember. 1982 -

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL. ,

(NWe-Net) (MRe-Net) ,

1 192.1 17 201.0 2 195.2 18 202.5 3 ino_R 19 202.5 4 198.7 20 202.8 ,

5 197.7 21 202.0 s- .

6 197.5 22 202.7 7 198.4 23 203.2 8 198.2 24 202.1 9 1R6.0 25 201.7 O' 10 201.5 26 201.1 11 202.6 27 195.0 -

t 12 202.1 28 203.1 '

13 202.4 29 203.4 14 202.0 30 42.4 -

15 203.5 31 N/A 16 201.9

• Generstor on line but no net generation. .

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UNIT SHUTINWNS AND NMER RF1MICT*)MS

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p i tM. DATE TYl'E talRAtle# REASON RFAChWI 1.ER f 0)DE allH!; CAUW. AND CDMRF('TIVE ACTluti 10fREVFNT RF[l/}RfJCE_,,,

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1. Same of ?=ed'1

v. Tor- St. t7r'd a Uni: No. 1

2. Scheduled data for anz= refus'ing shutdown. Oc:ober 1, 1983

3. Scheduled data for restarr.

fallowise st . " .c  ;. ., 1 - toA3

,1 E :sf .t 4 7 or :ssumptics of ,

opersCion :hsraafter : squire a

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,p.,#3d--ston change or other License mesma h -? Yes U answer is yea, what, is te=sesi, vil'. these be? Use of type H-451 granhi:e.

L' answer is so, has the ralsad fuel design and cara c=nfign=m-

.d_on been :seswed by your ?lanc Sadsey 2aviair C.suti::se .s decar-mL=a whachar 4 y =n=sviewed safety quescians a:s associacad w1:h the cars :sload (2afarenes 10C71 Sec _ den 50.f91? ,

If =a such :sviar has .akas --

elace. rhen is it sched : lad?

3. Scheduled data (s) for summi: 1sg pr: posed lica= sing action a=d sucec--d ? i=f::=a._d==. Not scheduled at this time: to be determined.

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{s. Importan: lies = sing c=nsiders-tions associa:ad vid ref el1=g, 4 3., Saw or Ad##8:s2C fuel de=

sign or supplier, unrsviswed __ __

desig= oe ;e=fc =a=ca analysis l, machods, sig=1ficas: changss i=

f a1 desig=, =ser cpe:2c1=g ;r:-

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l 7. he su=ber of fusi assemblias 1432 E 02 fuel ele =en:s (a) is da cc s and (b) 1= 77 sce== E G2 fuel elace=:s the see==

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:: age capaci.7 a=d :he Capac1:7 is id d:ad i= size :s abou: One-size of any i=c:same is lies = sed

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hird of :::a (appr xi=a:aly 300 E GR  ;

semrage capac1:7 : hat has been ele =e=:3).  :;o change is pl.1==ed.  ;

l :squestad or is planned, is l [ -.-ner of fuel s.sse=clies. l

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M W ING INFORMATION (CONTINUED) )

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9. The projected date of the 1992 under Agreements AT(04-3)-633 and last refueling that can be  !

D2-SC07-791D01370 between Public Service -

discharged to the spent fuel Company of Colorado. General Atomic pool assuming the present Company, and DOE.*

licensed capacity. I

• The 1992 estimated date is based on the understanding that spent fuel discharged during the term of the Agreements will be stored by DOE at the Idaho Chemical Processing Plant. The storage capacity has evidently been sized to accomodate eight fuel segments. It is estimated that the eighth fuel-segment will be discharged in 1992.

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