ML20112E466

Monthly Operating Rept for Feb 1985

ML20112E466
Person / Time
Site:	Grand Gulf
Issue date:	02/28/1985
From:	Cesare J, Dale L MISSISSIPPI POWER & LIGHT CO.
To:	Taylor J NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
AECM-85-0084, AECM-85-84, NUDOCS 8503260575
Download: ML20112E466 (7)

Text

Attachment OPERATING DATA REPORT s

DOCKET NO. 50-416 DATE 1-15-99 COMPLETED BY J.G. Cesare TELEPHONE Ani ono 9585 OPERATING STATUS Notes

1. Unit Name: Grand Gulf Nuclear Station - Unit 1

2. Reporting Period:

Februnrv 1985

3. Licensed Thermal Power (MWt):

3833 1372.5

4. Nameplate Rating (Gross MWe):

1250

5. Design Electrical Rating (Net MWe):

N/A

6. Maximum Dependable Capacity (Gross MWe):

N/A

7. Maximum Dependable Capacity (Net MWe):

8. If Changes Occur in Capacity Ratings litems Number 3 Through 7) Since Last Report. Give Reasons:

9. Power Level To which Restricted.If Any (Net MWe):

N/A

10. Reasons For Restrictions.If Any: Power Ascension Testing This Month Yr..to.Dat e Cumulative 672 1416 3153

11. Hours in Reporting Period 251.6 825.2 1835.3

12. Number Of Hours Reactor Was Critical 0

o o

13. Reactor Resene Shutdown Hours

14. Hours Generator On Line

???.o 582.8 1285.9

15. Unit Resene Shutdown Houn 0

0 0'

16. Gross Thermal Energy Generated (MWH) 552960 1203600 2083740

17. Gross Electrical Energy Generated iMWH) 169020 353540 550060 152239 314988 479969

18. Net Electrical Energy Generated (MWHi NA NA NA

19. Unit Senice Factor NA NA NA

20. Unit Availability Factor NA NA NA

21. Unit Capacity Factor iUsing MDC Neti NA NA NA

22. Unit Capacity Factor iUsing DER Net, NA NA NA

23. Unit Forced Outage Rate

24. Shutdowns Scheduled Oser Next 6 Months iType.Date.and Duration of Eacht:

Currentiv in a plant outane for condenser repairs and other planned maintenance activities.

March 27, 1985

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

26. Units in Test Status (Prior to Commercial Operationi:

Forecast Achieved 2/1A/82 INITIA L CRITICALITY 10/20/84 INITl4L ELECTRICITY

)#-y COMMERCl4L OPER ATION 6/85 ll/

8503260575 850228 P8/77)

PDR ADOCK 05000416 PDR R

j

INSTRUCTIONS FOR COMPLETING OPERATING DATA REPORT This report should be furnished each month by licensees. The name and telephone number of the preparer should be provided in the designated spaces. The instructions below are provided to assist licensees in reporting the data consistently. The number of the mstruction corresponds to the item number of the report format.

e

1. UNIT NAME. Self. explanatory.

or of commercial operation, whichever comes last, to the end of the period or decommissioning.whichever comes

2. REPORTING PERIOD. Designate the month for which first. Adjustments in clock hours should be made in the data are presented.

which a change from standard to daylight. savings time (or vice versa) occurs.

3. LICENSED THERMAL POWER (MW )is the maximum t

thermal power, expressed in megawatts, currently auth.

12. NUMBER OF HOURS REACTOR WAS CRITICAL.

orized by the Nuclear Regulatory Commission.

Show the total number of hours the reactor was critical

4. NAMEPLATE RATING (GROSS MW,). The nameplate power designation of the turbine. generator in megavolt

13. REACTOR RESERVE SHUTDOWN HOURS. The total superes (MVA) times the nameplate power factor of the number of hours during the gross hours of reporting turbine generator.

period that the reactor was removed from service for administrative or other reasons but was available for

5. DESIGN ELECTRICAL RATING (NET MW,) is the operation.

nominal net electrical output of the unit specified by the utility and used for the purpose of plant design.

14. HOURS GENERATOR ON LINE.

Also called Service Hours. The total number of hours expressed to the near.

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MW,)

est tenth of an hour during the gross hours of the re.

is the gross electrical output as measured at the output porting period that the unit operated with breakers terminals of the turbine. generator during the most re.

closed to the station bus. These hours, plus those listed strictive seasonal conditions.

in Unit Shutdowns for the generator outage hours, should equal the gross hours in the reporting period.

7. MAXIMUM DEPENDABLE CAPACITY (NET MW,).

Maximum dependable capacity (gross) less the normal

15. UNIT RESERVE SHUTDOWN HOURS. The total num.

station service loads.

ber of hours expressed to the nearest tenth of an hour during the gross hours of the reporting period that the

8. Self. explanatory.

unit was removed from service for economic or similar reas ns but was available for operation.

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MW,). Note that this item is applicable only if

16. GROSS THERMAL ENERGY GENERATED (MWH).

restrictions on the power level are m, effect. Short. term The thermal output of the nuclear steam supply system tiess than one month) limitations on power level need during the gross hours of the reporting period expressed not be presented in this item.

n megawatt hours (no decimals).

Since this information is used to develop figures on capa.

city lost due to restrictions and because most users of the

17. GROSS ELECTRICAL ENERGY GENERATED (MWH).

" Operating Plant Status Report" are primarily interested The electrical output of the unit measured at the output in energy actually fed to the distribution system, it is terminals of the turbine. generator during the gross hours requested that this figure be expressed in MWe. Net in of the reportmg period, expressed in megawatt hours (no spite of the fact that the figure must be derived from decimals).

MWt or percent power.

18. NET ELECTRICAL ENERGY GENERATED IMWH).

10. REASONS FOR RESTRICTIONS. IF ANY. If item 9 The gross electrical output of the unit measured at the is used. Item 10 should explain wh). Bnef narrative is output terminals of the turbine. generator minus the nor.

acceptable. Cite references as appc priate. Indicate mal station service loads during the gross hours of the whether restrictions are self. imposed or are regulatory reporting period. expressed in megawatt hours. Negative requirements. Be as specific as possible within space hmi.

quantities should not be used. If there is no net positive tations. Plants in startup and power ascension test phase value for the period, enter zero (no decimals).

should be identified here.

11. HOURS IN REPORTING PERIOD. For units in power

19. For units still in the startup and power ascension test ascension at the end of the period, the gross hours from

23. phase. items 19 23 should not becomputed, instead. enter the beginning of the period or the first electrical produe, N/A in the current month column. These tive factors tion, whichever comes last, to the end of the period.

should be computed starting at the time the unit is de.

clared to be in commercial operation. The cumulative i

For units in commercial operation at the end of the figures m the second and third columns should be based period, the gross hours from the beginning of the penod on commercial operation as a starting date.

GDdllL

19. UNIT SERVICE FACTOR. Compute by dividing hours the generator was on line (item 14) by the gross hours in the reporting period (item II). Express as percent to the nearest tenth of a percent. Do not include reserve shut.

down hours in the calculation.

20. UNIT AVAILABILITY FACTOR. Compute by dividing the unit available hours (item 14 plus item 15) by the gross hours in the reporting period (item i1). Express as percent to the nearest tenth of a percent.

21. UNIT CAPACITY FACTOR (USING MDC NET). Com-pute by dividing net electrical energy generated (item 18) ~

by the product of maximum dependable capacity (item

7) times the gross hours in the reporting period (item 11).

Express as percent to the nearest tenth of a percent.

22. UNIT CAPACITY FACTOR (USING DER NET). Com.

pute as in item 21. substituting design electrical rating (item 5) for maximum dependable capacity.

23. UNIT FORCED OUTAGE RATE. Compute by dividing the total forced outage hours (from the table in Unit Shutdowns and Power Reductions) by the sum of hours generator on line (item 14) plus total forced outage hours (from the table in Unit Shutdowns and Power Reductions).

Express as percent to the nearest tenth of a percent.

24. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE. AND DURATION OF EACH). Include type (refueling. maintenance. other), proposed date of start of shutdown. and proposed length of shutdown.

It is recognized that shutdowns may be scheduled between reports and that this item may not be allinclusive. Be as accurate as possible as of the date the report is prepared.

This item is to be prepared each month and updated if appropriate until the actual shutdown occurs.

25. Self explanatory.

26. Self<xplanatory. Note, however, that this information is requested for all units in startup and power ascension test status and is not required for units already in com.

mercial operation.

TEST STATUS is defined as that period following ini.

tial criticality during which the unit is tested at succes.

sively higher outputs, culminating with operation at full power for a sustained period and completion of war.

ranty runs. Following this phase, the unit is generally considered by the utility to be available for commercial operation.

Date of COMMERCIAL OPERATION is defined as the date that the unit was declared by the utility owner to be available for the regular production of electricity.

usually related to the satisfactory completion of quali.

fication tests as specified in the purchase contract and to the accounting pokeies and practices of the utility.

W-,

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-416 UNIT I

DATE 3-15-85 COMPLETED BY. T C-Coe re TELEPHONE 601-969-2585 MONTH February 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 0 749 37 721 2

18 n

3 717 39 0

4 732 20 0

0 5

744 21 740 0

6 22 7

7n?

23 0

0 g

708 24 661 9

25 0

10 1An 26 0

0 11 0

27 0

0 12 28 0

13 0

29 0

14 0

30 15 0

33 0

16 0

INSTRUCTIONS On this format. list the average daily unit power leselin MWe Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

DOCKET NO.

50-416 UNIT SHUTDOWNS AND POWER REDUC 110NS UNIT NAME I

DATE 1/15/o5 C

Y ro REPORT MONTH February 1985 E

c

.5 ?

3 yYl Licensee

,Eg

{w't Cause & Corrective No.

Date g

3g 4

2s5 Event p

gV8 Action to

$=

jgg Report e mO Prevent Recurrence H

g 6

85-6 2/10/85 F

82.2 H

3 85-007 ZZ ZZZZZZ While Steam Jet Air Ejectors (SJAEs) were being transferred from the "B" train to the "A" train, condenser vacuum decreased to'the turbine trip setpoint, tripping the turbine and causing a reactor scram. A design change is being implemented to in-crease the size of the SJAE steam supply piping to prevent recurrence.

85-7 2/13/85 F

366.9 H

3 85-008 ZZ ZZZZZZ The condensate precoat filters iso-lated due to low air pressure. The precoat bypass valve did not respond fast enough to prevent a trip of all operating condensate pumps, conden-sate booster pumps, and subsequently the reactor feed pump. The Reactor l

scrammed due to low wat'er level.

I 2

3 4

F: Forced Reason:

Method:

Exhibit G -Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance of Test 2-Manual Scram.

Entry Sheets for Licensee C-Refueling 3-Automatic Scram.

Event Report (LER) File (NUREG-D-Regulatory Restriction 4-Other (Explain) 0161)

E-Operator Training & License Examination 5

'"I",i5",'[r ror ( E xplain )

• In accordance (9/77)

II-Other (Explain) with Nureg 1022 4

UNIT SHUTDOWNS AND POWER REDUCTIONS INSTRUCTIONS This report should describe all plant shutdowns during the in accordance with the table appearing on the report form.

report period, in addition,it should be the source of explan-If category 4 must be used, supply brief comments.

ation of significant dips in average power levels. Each signi.

ficant reduction in power level (greater than 20% reduction LICENSEE EVENT REPORT #.

Reference the applicable in average daily power level for the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />)

'eportable occurrence pertaining to the outage or power reduction. Enter the first four parts (event year, sequential should be noted, even though the unit may not have been shut down completely. For such reductions in power level, report number, occurrence code and report type) of the five l

the duration should be listed as zero,the method of reduction part designation as described in item 17 of Instructions for

.sould be listed as 4 (Other), and the Cause and Corrective Preparation of Data Entry Sheets for Licensee Event Report Action to Prevent Recurrence column should explain. The (LER) File (NUREG4161). This information may not be Cause and Corrective Action to Prevent Recurrence column immediately evident for all such shutdowns, of course, since should be used to provide any needed explanation to fully further investigation may be required to ascertain whether or describe the circumstances of the outage or power reduction.

not a reportable occurrence was involved.) If the outage or power reduction will not result in a reportable occurrence.

NUMBER. This column should indicate the sequential num.

the positive indication of this lack of correlation should be ber assigned to each shutdown or significant reductionin power n ted as not applicable (N/A).

for that calendar year. When a shutdown or significant power SYSTEM CODE. The system in which the ou.tage.or power reduction begins in one report period and ends in another.

an entry should be made for both report periods to be sure reduction originated should be noted by the two digit code of all shutdowns or significant power reductions are reported.

Exhibit G. Instructions for Preparation of Data Entry Sheets Until a unit has achieved its first power generation, no num, f r Licensee Event Report (LER) File (NUREG4161).

ber should be assigned to each entry.

Systems that do not fit any existing code should be designa, ted XX. The code ZZ should be used for those events where DATE. This column should indicate the date of the start a system is not applicable.

of each shutdown or significant power reduction. Report as year. month, and day. August 14.1977 would be reported COMPONENT CODE. Select the most appropriate component as 770814. When a shutdown or significant power reduction from Exhibit I. Instructions for Preparation of Data Entr3 beginsin one report period and ends in another, an entry should Sheets for Licensee Event Report (LER) File (NUREG0161).

be made for both report periods to be sure all shutdowns using the following critieria:

or significant power reductions are reported.

TYPE. Use "F" or "S" to indicate either " Forced" or " Sche.

duled," respectively, for each shutdown or significant power B.

If not a component failure, use the related component:

reduction. Forced shutdowns include those required to be e.g., wrong valve operated through error: list valve as initiated by no later than the weekend following discovery component.

of an off. normal condition. It is recognized that some judg.

ment is required in categorizing shutdowns in this way. In C.

If a chain of failures occurs, the first component to mal, general, a forced shutdown is one that would not have been function should be listed. The sequence of events,includ.

completed in the absence of the condition for which corrective ing the other components which fail, should be described action was taken.

under the Cause and Corrective Action to Prevent Recur.

rence column.

DURATION. Self explanatory. When a shutdown extends Components that do not fit any existing code should be de.

beyond the end of a report period. count only the time to the signated XXXXXX. The code ZZZZZZ should be used for end of the report penod and pick up the ensuing down time events where a component designation is not applicable.

in the following report periods. Report duration of outages rounded io the nearest tenth of an hout to facilitate summation.

CAUSE & CORRECTIVE ACTION TO PREVENT RECUR.

The sum of the total outage hours plus the hours the genera.

RENCE. Use the column in a narrative fashion to amphfy or tor was on line should equal the gross hours in the reporting explain the circumstances of the shutdown or power reduction.

penod.

The column should include the specific cause for each shut.

down or significant power reduction and the immediate and REASON. Categorize by letter designation in accordance contemplated long term corrective action taken,if appropri.

with the table appearing on the report form. If category H ate. This column should also be used for a description of the must be used. supply brief comments.

major safety related corrective maintenance performed during the outage or power reduction including an identification of METHOD OF SHUTTING DOWN THE REACTOR OR the critical path activtty and a report of any single release of REDUCING POWER.

Categon/e b) number designation radioactivit) or single radiation exposure specifically assoet INote that this differs from the Edison Electric Institute ated with the outage which accounts for more than 10 percent (EEI) definitions of " Forced Partial Outage" and " Sche, of the allowable annual values.

duled Partial Outage.' For these termi. El I uses a shange of For long textual reports continue narrative on separate peper 30 MW as the break pomt. For larpei power reactors. 30 M%

and reference the shutdown or power reduction for ihn is im small a change to wanan oplanation.

narrative.

W77

MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi EsikhilhiledE P. O. B O X 16 4 0, J A C K S O N, MISSISSIPPI 39215-1640 March 15, 1985 NUCLEAR LICENSING & SAFETY DEPARTMENT Mr. James M. Taylor, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D. C.

20555 Attention: Document Control Desk

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-29 File 0260/L-835.0 Monthly Operating Report AECM-85/0084 In accordance with 10CFR50.36, Mississippi Power & Light Company (MP&L) is providing twelve copies of the Monthly Operating Report for Grand Gulf Nuclear Station Unit I for February, 1985, (attachment).

If you have any questions or require additional information, please contact this office.

Yours truly,

. F. Dale Director GWD/JGC:rw Attachment cc:

Mr. J. B. Richard (w/a)

Mr. R. B. McGehee (w/a)

Mr. N. S. Reynolds (w/a)

Mr. G. B. Taylor (w/o)

Dr. J. Nelson Grace, Regional Administrator (w/a)

U.S. Nuclear Regulatory Connission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30323 Chief (w/2)

Office of Resource Management U.S. Nuclear Regulatory Commtsnion

%\\

Washington, D.C.

20555 J0P14AECM85031201 - 1