ML20040E150

Monthly Operating Rept for Dec 1981

ML20040E150
Person / Time
Site:	Fort Saint Vrain
Issue date:	01/27/1982
From:	Mcbride L PUBLIC SERVICE CO. OF COLORADO
To:
Shared Package
ML20040E147	List: ML20040E146 ML20040E150
References
NUDOCS 8202030182
Download: ML20040E150 (9)

Text

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PUBLIC SERVICE CCMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION MONTHLY CPERATIONS REPORT NO. 96 December, 1981 b

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8202030182 820127 PDR ADOCK 05000267 .

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l This report contains the highlights of the Fort St. Vrain, Unit l No. 1, activities operated under the provisions of the Nuclear Regulatory Commission Operating License DPR-34. This report is for the month of December, 1981.

1.0 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE AND MAJOR SAFETY RELATED MAINTENANCE 1.1 Summary The plant has remained shutdown throughout the entire month to complete. the circulator auxiliaries loop split modifications. This work is now about 75% complete, and tne work is scheduled to be complete by January 25. The modifications should be complete on Loop 1 by January 7.

At that time, Loop 1 will be placed in service and used for core cooling. Loop 2 shutdown maintenance and modification will then oegin.

The turbine generator work being completed during this outage should be complete by the first week in February.

At that time, the secondary coolant will be placed in a normal configuration and cleanuo of the system can commence. The last stage of blading of the low pressure turbine has been removed and sent to General Electric Company for repairs / modifications. This blading will be installed during another 1982 outage.

The maintenance activities requiring a Loop 1 shutdown are near completion. The major items that remain are the '

recair of several hydraulically operated valves and seal replacement on the Loop 1, System 91 power unit.

1.2 Ooerations The plant has remained shutdown for the entire month to comolete the modifications to the circulator auxiliaries and segregate the buffer system into separate loops. The loop split work is approximately 75% done with an estimated completion date of January 25, 1982. The turbine generator work is now scheduled for completion the first week of February.

The loop split work affecting the startup of Loop 1 that has been ccmpleted this month includes 1) modifications to the buffer helium recirculators, 2) the new buffer helium makeup station for Loop 1, and 3) modifications to the Loop 1 buffer supply and return valves. Loop 2 circulators are presently being operated with the buffer supply from a temporary configuration from the high pressure bottles and 3

l the buffer return is being vented to the ventilation system at the discharge of the buffer helium recirculators. This mode allows the maximum amount of the construction work to continue without interfering with core cooling. The startup of Loop 1 circulators is now scheduled for January 7. The new dryer will not be placed in service until a later date. Cleanup of the primary system will begin when the dryer is operable.

All internal maintenance and related shutdown maintenance work was completed on January 2, and the vessel was pressurized to 10 psig. All core cooling was terminated l for about 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br /> prior to this to allow evacuating the vessel. The vessel was pumped down to 13 inches vacuum to maximize the removal of primary system impurities prior to pressurization.

An examination of the low pressure rotor revealed that once again the tenor stays on the insert covers of the last stage of low pressure blading were loose. This is the same problem that caused the shutdown in the summer of 1981.

The last stage of blading has been removed and sent to General Electric Company for repairs / modification. The blading will be installed during a scheduled 1982 outage.

A 5 to 7% loss of capacity is expected as a result of removing tnis stage of blading. The machine is also presently being realigned to resolve an alignment ciscrepancy. The previous high pressure and low pressure alignment was the cause of the oil whip we exoerienced on the #3 bearing. The high oressure nozzle assemblies are still at the General Electric Company shop for repair and should be on site in late January. The -turbine work is about 50% complete and should be finalized by the first week of February when a condenser vacuum can be established and cleanup of the secondary coolant system can commence.

Maintenance activities requiring a Loop 1 shutdown are nearly complete. The seal replacement activity in the Loop 1 hydraulic skid shoulc be done by the first week in January. The extensive list of shutdown maintenance activities represents resolution of both recent and long term problems and should improve our operating reliability.

2.0 SINGLE RELEASES OF RADI0 ACTIVITY OR RADIATION EXPOSURE IN EXCESS OF 10% OF THE ALLOWABLE ANNUAL VALUE None r

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3.0 INDICATION OF FAILED FUEL RESULTING FROM IRRADIATED FUEL EXAMINATIONS None 4.0 MONTHLY OPERATING OATA REPORT Attached 4

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cerranse OA*A RI? ORT DOCIZT NO. 50-267 cATg 820108 c0atznD sr L. M. McBride n:.:PscNs (303) 785-2224 OPERATINc STATtlS 30T s

1. Unie Name: Fort St. Vrain

2. Reporting Period: 811201 through 811231

3. Licensed Thermal rever osit): 842

4. Nameplace Racing (Cross We): 342

.5 . Design Electrical Racing Ofec We): 330

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6. Maximua Dependable Capacity (cross We): 342

7. yw- Oependable Capacity Cret We): 330

3. If changes Cccur in capacity 2atings (Iteas Number 3 Through 7) Since Lase Report, Give Reasons:

None

9. Power Level To '4hich Rescricted, If Any (Net We): 231

10. Reasons for anscriccions. If Any: NRC restriction of 70* oending resolution of _

temperature fluctuations.

This Monch Year es Data C.amulative

11. naurs in Reporting Period 744 8,760 21.961 1:. Number of nours Reactor Jas cricical 0.0 5.443.2 14.578.4

13. Reactor Reset re Shutdown Hours 0.0 0.0 0.0 14 Hours cenerator on-Line 0.0 4.215.0 9.908.3

13. Unic Reserve Shuedown Hours 0.0 0.0 0.0

16. Gross Thermal Enerrf ceneraced (51) 0.0 2.225.852.Q_ 4.011.044.R

17. cross nectrical Energr cenerated (si) 0.0 819,562 1,691,356 is. set nectrical Energy ceneraced (Wu) 0.0 754,958 1.554.259

19. Unit Service rac:ar 0.0 48.1 45.1

20. :st: Availabt11:7 Fac:ar 0.0 48.1 45.1

1. Unit Capacity Fac:or (Using MDc Nec) 0.0 26.1 21.4 .

22. Unic capacity rector (tsing :t2 Nec) 0.0 26.1 21.A_

23. Cnic Forced Outage Race 0.0 28.8 34.0

24. Shutdowns Scheduled over Next 6 Months (Type, D* te, and Duracica of Each): Maintenance /medificat(,on shutdown 1-1-82 through 1-31-82.

5. :f Shuc Ocwn ac Ind of Report Period, Escirated Oate of Startuo: Februari 1. 1992

6. Uni:s In Test Scacus (?rior :s Commercial Operation): Forecast Achieved N:nA:. carnc. tin N/A N/A INIna:, :. c 1:c:n N/A N/A c MMEac:.c cPERA M N N/A N/A

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AVERAGE DAILY UNIT POWER LEVEL Docket No. 50-267 f

Unit Fort St. Vrain Date 820108 Completed By L. M. McBride Telephone (303) 785-2224 Month December _ togt i DAY AVEMGZ DAILY POWER LEVEL DAY AVEMGE DAILY POWER LEVEL '

(We-Net) ( We-Net) 1 0.0 17 o,o 2 0.0 18 0.0 3

0.0 19 0.0 4 0,0 20 0.0 5 0.0 21 0.0 6 0.0 22 0.0 7 0.0 23 0.0 3 0.0 24 0.0 9 0.0 25 0.0 10 0.0 26 0.0 11 0.0 27 0.0 12 0.0 23 0.0 13 0.0 29 0.0 14 0.0 30 0.0 l

0.0 31 0.0

! 13 16 0.0 i

• Generator on line but no net generation.

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1. Nana of Tacill:r. ?ere se. 7: sin Uni: No. 1

2. Schedulad da:a f:: cax: refcall=g shu:dev=. Oc::bar 1, 1983

3. Scheduisd data f : :sstar:

f:11:wi=r :sfueli==. m.e.e. i tea 3 k 4. 'J' ' :sf =? ' g c :ssu=p:1:n of Opera:1:s -dermaf:ar :squirs a -

=e %d-*'- specid1:a.1== change .

c: c:her l'es=se a===d=ene? Yes

_ f answer is yes, wha:, is gene:2.1. vill -lese be? Use of type H-451 gra hi:e.

1 f a=svar is so, has the :alcad faal desig= and cc:s cc fig =:2-1:n ~:een :sriswed by 7 cur- ?lan:

5af a:7 ?.a'riav C:==1::ss .= da:a - __ ..

d a whachar an7 ==:sriswed saf et7 quas-d.. s a s assced2:ad i vi:1 -le :::s :slead (7.ef arene,s ICCH Sec '~~ 'O.395? ,

If =c such :sviav has .aka= - -- -----

eLzen. When is it scheduled?

f. Scheduled da:s(s) f : simi::1:g pr:yesad li:c= sing ac:1:n a=d su ne--d-- ' #- _a:1:n. Not scheduled at this :.ime: to be determined.

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fusi desi;=, :ev epers-d ! ;;:-

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7. ~he -'-her of fuel asse=blias 1130 E 2 fuel eleces:s (a) 1: -he :::s and (b) 1:

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Q REPUELING INFORMATION (CONTINUD)

9. The projected date of the 1986 under the Three Party Agreement (Con-last refueling that can be tract AT (04-3)-633) between DOE, Public discharged to the spent fuel Service Company of Colorado (PSCo), and pool assuming the present General Aconic Conpany.*

licensed caraciev.

• The 1986 date is based on the understanding that spent fuel discharged during the cars of the Three Party Agreement will be shipped to the Idaho National Engineering Laboratory for storage by DOE at the Idaho Chenical Processing Plant (ICPP). The storage capac'ty has evidently been sized to acconcdate fuel which is expected to be disunarged during the eight year period covered by the Three Party Agreement, i

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