AECM-85-0329, Monthly Operating Rept for Sept 1985

Monthly Operating Rept for Sept 1985

ML20133H965
Person / Time
Site:	Grand Gulf
Issue date:	09/30/1985
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-85-0329, AECM-85-329, NUDOCS 8510180207
Download: ML20133H965 (8)

Text

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Attechment to AECM-85/0329 Page 1 of 7 OPERATING DATA REPORT DOCKET NO. 50-416 DATE in/ tam COMPLETED BY

3. C. coaare TELEPHONE (6n11 969-2585 OPERATING STATUS Notes

1. Unit Name: Grand Gulf Nuclear Station

2. Reporting Period:

September 1985 3833 Mwt

3. Licensed Thermal Power (MW ):

1372.5 Mwe

4. Nameplate Rating (Gross MWe):

1250 Mwe

5. Design Electrical Rating (Net MWe):

1157 Mwe

6. Masimum Dependable Capacity (Gross MWe).

1108 %

7. Masimum Dependable Capacity (Net MWe):

8. If Changes Occur in Capacity Ratings (Items Numbe' 3 Through 7) Since Last Reprt.Give Reasons:

NA

9. Power Level To Which Restricted.lf Any (Net MWe):

NA

10. Reasons For Restrictions.lf Any:

NA This Month Yr to.Date Cumulative 720 6.552 a.2Ro II. Hours in Reporti:ig Period

12. Number Of Hours Reactor Was Critical 697.3 4.928.7 5.938.8

13. Reactor Reserve Shutdown Hours 0

0 0

680.7 4.390.8 5.093.9

14. Hours Generator On.Line -

0 0

0

15. Unit Reserve Shutdown Hours

16. Gross Thermal Energy Generated (MWH) 2,401,704 12.798.419 13.678.559 755,440 3,891,110 4.087.630

17. Gross Electrical Energy Generated (MWH)

18. Net Electrical Energy Generated (MWHI 722,497 3.667,246 3.832.227 j

94.5 92.4

.92.4

19. Unit Service Factor 94.5 92.4 92.4

20. Unit Availability Factor 90.6 82.3 82.3

21. Unit Capacity Factor (Using MDC Net) 80.3 72.9 77.o

22. Unit Capacity Factor (Using DER Net) 5.5 7.6 7.6

23. Unit Forced Outage Rate

24. Shutdowns Scheduled Over Nest 6 Mont%s (Type. Date.and Duration of Eacht:

Fall Outage; October 13, 1985: 44 days l

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

NA

26. Units in Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY 8/18/82 lNITIAL ELECTRICITY 10/20/84 COMMERCI AL OPER ATION 7/01/85 I... y )

8510180207 850930 PDR ADOCK 05000416 1/

Il R

PDR ppyy

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Attachtaent to, AECM-85/0329 Page 2 of 7 INSTRUCTIONS FOR COMPLETING OPERATING DATA REPORT This report should be fuuished each month by licensee.t The name and telephone number of the prepare: should be provided in the designated spaces. The instructions below are prcvided to assist licensees in reporting the da'a consistently. The number of the instruction correspondr to the item number of the report format.

1. UNIT NAME. Self. explanatory.

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

2. REPORTLNG 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 g

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 during the gross hours of the reporting period.

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

13. REACTOR RESERVE SilUTDOWN HOURS. The total amperes (MVA) times the nameplate power factor of the n' umber of hours during the gross hours of reporting turbine generator.

penod that the reactor was removed from service for administrative or other reasons but wts avail.ble 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 GENERA' LOR 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.

n Unit Shutdowns for the generator outage hours,should I

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<xplanatory, unit was removed from service for economic or similar E*U " *

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 en the power level are in effect. Short tenn The thermal output of the nuclear steam supply system (less than one month) limitations on power level need during the gross hours of the reporting period, expressed not be presented in thisitem.

In megawatt hours (no decimals).

Since this information is used to develop figures on capa.

17. GROSS ELECTRICAL ENERGY GENERATED (MWH).

city lost due to restrictions and because most users of the

" 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 (MWH).

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 why. Brief narrative is output termmals of the turbine. generator minus the not.

acceptable. Cite references as appropriate. Indicate mal station service loaas during the gross hours of the whether restrictions are selfimposed or are regulatory reporting period, expressed in megawatt hours. Negative requirements. Be as specific as possible within space limi-quantities sould 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 per od, the gross hours from

23. phase items 19 23 should not be computed. Instead, enter N/A in the current month column. These five factors the beginning of the period or the first electrical produc.

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 For units in commercial operation at the end of ti:e figures in the second and third columns should be based period, the gron nours from the beginning of the period on commercial operation as a starting date, my565 1

Attachnunt to AECM-85/0329 Page 3 of 7

19. UNIT SERVICE FACTOR. Compute by dividing hours the generator was on line (item 14) by the gross hours in the reporting period (item 11). 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 itam 15) by the gross hours in the reporting period (item II). 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 1!).

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 cf hours generator on line (item !4) 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. Self4xplanatory.

26. Self. explanatory. Note, however, that this infonnation is requested for all units in startup and power ascension test status and is not required for units already in com-mercial operatiori.

TEST STATUS is defined as that period following ini.

tial criticality during wh ch the unit is tested at succes-sively higher outputs. culminating with operation at full power for a sustamed 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 policies and practices of the utility.

l enn

Attachment to-AECM-85/0329 Page 4 of 7 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-416 UNIT I

DATE 10/14/85 COMPLETED BY 3-C-Cesare TELEPHONE (601) 969-2585 September 1985 MONTH DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 899 37 0

2 1034 3g 604 3

1135 39 1023 4

1139 20 1060 587 5

1150 21 1140 981 6

22 7

1148 23 1109 8

II14 1139 24 9

II48 25 785 10 1152 26 1103 g3 1151 27 1126 1150 1144 12 28 13 1157 29 1077 14 1155 30 1146 15 1173 33 390 16 INSTRUCTIONS On this format list the average daily unit power level in MWe. Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77i

DOCKET NO" 50-416 UNIT SHUTDOWNS AND POWER REDUCTM)NS UPNT NAME 1

DATE 10/14/R5 COMPLETED BY J.

c _ roaro REPORT MONTH Senterhor TELEPHONE (601) 969-?sRs w

c jg 3

j Ei Licensee Ev, wl, Cause & Currective

^'

No.

Daic h

3?

f

.3 s &

Event 3,7 Eb f5 j ;f, g Report 8 m ('

Prevent Recurrence H

g 6

85-20 9/16/85 F

39.3 H

3 85-036 KK BKR The reactor automatically scrammed as the result of a turbine trip on low condenser vacuum. The low condenser vacuum was due to the circulating water pumps tripping on low lube water flow. A breaker to the domestic water pumps control circuitry was inadvertently opened causing improper operation of the pumps and resulting in the low lube water supply flow. Design enhance-ments are being considered to provide ~

an automatic backup source of lube water to the circulating water pumps.

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mp$

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• Y i

2 3

4 Method:

Exhibit G Instructions

"$[

F: Forced Reason:

S: Scheduled A Equipment Failure (Explain) 1 Manual 5-Reduced for Preparation of Data ogg B-Maintenance of Test 2 Manual Scram.

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

Event Report t LER) File (NUREG-

"@no 4 Continued 6-other 0161)

D-Regulatory Restriction EOperator Training & Ucense Exansnation 5

F-Administrative

• In accordance Exhibit I Same Source Goperational Error iExplain) with Nureg 1022 (9/77) llother (Explain)

WHT NO.

UNIT SHUTDOWNS AND FOWER REDUCTIONS UMtT MAME I

DATE 10/14/85 CORNLETED BY T_

c_ roc,vn REPORT MONTH set,t e+nr E

( Am T o Ao_ xm e.

E E

. E5 Licensee Eg Cause & Corrective

,$E 3

Action to No.

Date k

3g&

Event y

ia O Prevens Recurrence

$8 all j;5g Repswa

• g P

d 85-21 9/21/85 F

0.0 A

5 N/A SN LCV Reactor power was reduced to remove feedwater heater 6B f rom service to repair a steam leak at a MSR drain tank level control valve.

85-22 9/25/85 F

0.0 A

5 85-038 EF XFMR Reactor power was reduced following Division 1 primary containment and secondary containment isolations produced when a transformer failed in inverter lY87. The transformer was replaced.

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• Y$

3 4

Method:

Exhibit G. inst ructions

' $ j' 2

1 F: Forced Reason:

oso 1-Manual 5-Reduced for Preparatism of Data B-Maintenance of Test 2 Manual Scram.

load Entry Sheets for Licensee

'8E S: Scheduled A-Equipment Failure (Emplain) 3-Automatic Scram.

Event Repswi lLERI Fde INUREG-C-Refueling 4 Cont inued 6-other 0161) o D Regulatory Restriction EOperator Training & License Emanination 5

F-Adeninistrative

• In accordance Exhibit I Sane Se=rce 4

G-Operational Error IEmplain) with Nureg 1022 19/77 )

llother (Emplain,

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Attachment to' AECM-85/0329 Page 7 of 7 UNIT SHUTDOWNS AND POWER REDUCTIONS LNSTRUCTIONS 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 exp'.an.

If category 4 must be used, supply brief comments.

ation of significant dips in average power levels. Each signi-LICENSEE EVENT REPORT #.

Reference the applicable ficant reduction in power level (greater than 20% reduction in average daily power level for the precedmg 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) reportable 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 bsted as zero,the method of reduction part designation as desenbed in item 17 of Instructions for should 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 fecurrence 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 reduction in power nc,ted as not applicable (N/A).

for that calendar year. When a shutdown or sigmficant power SYSTEM CODE. The system in which the outage or power reduction begins in one report period and ends in another, reduction originated sh' uld be noted by the tw'o digit code of o

an entry should be made for both report periods to be sure Exhibit G Instructions for Preparation of Data Entry Sheets all shutdowns or significant power reductions are reported.

for Licensee Event Report (LER) File (NUREG4161).

Until a unit has achieved its first power generation, no num-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 Entry begms in one report period and ends in another, an entry should Sheets for Licensee Event Report (LER) File (NUREGol61).

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

or significant power reductions are reported.

A. If a component failed,use the componerit directlyinvolved.

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; hst 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 categorizmg 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 to the nearest tenth of an hour 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 bne should equal the gross hours in the reportmg 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 teim corrective action taken,if appropri.

with the table appearing on the report form. If category 11 ate. This column should also be ured for a description of the must be used, supply brief comments.

major safety.related corrective maintenance performed during the nutage or power reduction including an identification of METHOD OF SHUTTING DOWN THE REACTOR OR REDUCING POWER. Cateponte by number designation the critical path activity and a report of any single release of radioactivity or single radiation exposure specifically associ.

I ote that this differs from the Edison Electric Institute ated with the outage which accounts for more than 10 percent N

(EEI) definitions of " Forced Partial Outage" and " Sche.

of the allowable annual values.

duled Partial Outage.' For these terms. LEI uses a change of For long textual reports continue narrative on separate paper 30 MW as the break pomt. For larger power reactors. 30 MW and reference the shutdown or power reduction foi ihn is too small a change to warrant esplanation.

narrative.

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MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi EsihtikhilddE P. O. B O X 16 4 0. J A C K S O N, MISSISSIPPI 39215-1640 October 11, 1985 NUCLEAR LICENSING & SAFE 7 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-85/0329 In accordance with 10CFR50.36, Mississippi Power 6 Light Company (MP&L) is providing twelve copies of the Monthly Operating Report for Grand Gulf Nuclear Station Unit I for September, 1985 (attachment).

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

Yours truly, L. F. Dale Director GWD/JGC:vog Attachment cc:

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

Mr. O. D. Kingsley, Jr. (w/a)

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

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

Mr. H. L. Thomas (w/o)

Mr. R. C. Butcher (w/a)

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

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

/

Office of Resource Management M

U. S. Nuclear Regulatory Commission l

Washington, D. C.

20555 l

J13AECM85100702 - 1 Member Middle South Utilities System i