AECM-84-0331, Monthly Operating Rept for May 1984

Monthly Operating Rept for May 1984

ML20092B504
Person / Time
Site:	Grand Gulf
Issue date:	05/31/1984
From:	Cesare J, Dale L MISSISSIPPI POWER & LIGHT CO.
To:	Deyoung R NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
AECM-84-0331, AECM-84-331, NUDOCS 8406200239
Download: ML20092B504 (9)

Text

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Attachm:nt to AECM-84/0331 Paga 1 of 8 OPERATING DATA REPORT DOCKET NO. sn-A16 DATE 6/15/84 COMPLETED BY J. G. Cesare TELEPHONE 601-969-2585 OPERATING STATUS Notes

1. Unit Name: Grand Gulf Nuclear Station

2. Reporting Period: _May 1984

3. Licensed Thermal Power (MW:): 191

4. Nameplate Rating (Grost MWe): 1372.5

5. Design Electrical Rating (Net MWe): 1250

6. Masimum Dependable Capacity (Gross MWe): NA

7. Masimum Dependable Capacity (Net MWe): NA

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Gise Reasons:

NA

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

10. Reasons For Restrictions. lf Any: as restricted by O.L. NPF-13 as listed in 3.0 above This Month Yr. to Date Cumulatise II. Hours in Reporting Period 744 3,648 6,576

12. Number Of Hours Reactor has Lritical 554.8 748.8 1744.1

13. Reactor Resene Shutdown Hours 0 0 0

14. Hours Generator On Line 0 0 0

15. Unit Resene Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 77.280 97.951 175,339

17. Gross Electrical Energy Generated (MWHI O O O

18. Net Electrical Energy Generated (MWH 0 0 0

19. Unit Senice Factor NA NA NA

20. Unit Availability Factor NA NA NA

21. Unit Capacity Factor (Using MDC Neti NA NA NA

22. Unit Capacity Factor (Using DER Net) MA NA NA

23. Unit Forced Outage Rate NA NA NA

24. Shutdowns Scheduled Oser Nest 6 Months tType.Da'e.and Duration of Eacht:

NA

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

26. Units in Test Status (Prior o Commercial Operationi: Forecast Achiesed INITI A L CRITICALITY 8/18/82 INITI AL ELECTRICITY 8/84 CO\l\lERCI A L OPER ATION 2/85 4'

B406200239 840531 go/77, PDR ADOCK 05000416 \\

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Attichme'nt to AECM-84/0331 INSTRUCTIONS FOR COMPLETING OPERATING DATA REPORT Paga 2 of 8 Tb report should be fumished 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 imtruction corresponds 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 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 2 change from standard to daylight savings time (or vice versa) occurs.

3. LICENSED THERMAL POWER (MWg )is the maximum 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 pwer 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.

o. 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 eq al the gross hours in the reporting period.

7. MAXIMUM DEPENDABLE CAPACITY (NET MW,).

Maximum dependable capasity (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

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY reas ns but was available for operation.

(NET MW,). Note that this item is applicable only if restrictions on the power level are in effect. Short tenn 16. GROSS THERMAL ENERGY GENERATED (MWH).

The thermal output of the nuclear steam supply system t'less than one month) hmitations on power level need not be presented in this item. during the gross hours of the reporting period, expressed in 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 (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. Bnef narrative is output terminals of the turbine generator minus the nor.

acceptable. Cite references as appropriate. Indicate mal statiun service loads during the pross hours of the whether restnctions are selfimposed or are regulatory reporting period, expressed in megawatt hours. Negative requirements. Be as specific as possible within space limi- 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 be computed. Instead. enter the beginning of the period or the first electrical produe. N/A in the current month column. These five 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 cumulati e for units in commercial opera' ion at the end of the figures in the second and third columns should be based period, the pross hours from the begmning of the penod on sommer6ial operatmn as a startmp date.

[ (W77 i

Attcchment to AECM-84/0331 Page 3 of 8

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 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 I!).

Express as percent to the nearest tenth of a percent.

22. UNIT CAPACITY FACTOR (USLNG DER NET). Com-pute as in item 21. substituting design electrical rating (item 5) for stiximum deper:dable 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 Shutdownsand Power Reductions).

Express as percent to the nearest tenth of a percent.

24. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPF., DATE. AND DURATION OF EACH). Include type (refueling. maintenance, other), proposed date of ca t of shutdown, and proposed length of shutdown, it b 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 whi6h the umt 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 generall) considered by the utihty to be available for commercial operation.

Date of COMMERCIAL OPERATION is defined as the die that the unit was dedated by the utility owner to be available for the regular produ6 tion of electrielty, tsnally related to the satisfactory completion of quali.

fication tests as specified in the pur$hase contra 6: and to the accounting pohcies and practices of the utihty.

to "

r Attcchment to AECM-84/0331 AVERAGE DAILY UNIT POWER LEVEL Pcgo 4 cf 8 DOCKET NO. 50-416 UNIT 1 DATE 6/15/84 COMPLETED BY J. G. Cesare TELEPHONE 601-969-2585 MONTH May 1984 DAY AVER AGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe Net) (MWe Net) l NA 37 2 18 3 19 4 20

$ 21 6 22

. 7 23 8 24 9 2$

10 26 11 27 12 28 13 29 14 30 15 31 16

, INSTRUCTIONS On this format. fist the average dady unit power leselin MWe. Net for each day in the reporting month. Compute to the nearest whole megawatt, 14/77)

l DOCKET NO. 50-416 ,

UNITSHUTDOwMS AND POWER REDUCTIONS UMT NAME I DATE 6/15/84 REPORT MONTH May "

E 651 56 585

-. 3? 3 Ik Licensee E

,v, h". Cause & Correttive

• - D*'e i T= ? 4 .2 5 E Event =? 81 tu t.

$5 5 gig Report

• N0 0 Prevtat kecurrence 6,

5 5/2/84 F 85.8 A 1 84-024 BO PSF The plant was shutdown as required by PSP Technical Specification 3.6.3.2 due SPT to the inoperability of both Contain-ment Spray loops of the Residual Heat Removal (RHR) System. The RHR "B" loop was declared inoperable on April 30 due to 2 cracks found in a 3 inch diameter branch pipe off the main RHR "B" loop header. Pipe support deficiencies found on May 2 resulted in both RHR loops being declared inoperable. The pipe supports were reworked or redesigned.

The 3 inch pipe was disconnected and the branch connection capped as a temporary solution to restore the "B" loop.

I 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain)

B Maintenance of Test I-Manual 2-Manual Scram.

for Preparation of Data Entry Sheets for Licensee 7%$n C-Refueling 3-Automatic Scram. Event Reporn (LER) File (NUREG- oo

• g$

i D-Regulatory Restriction 4-Other (Explain) 0161) * $ j' E-Operator Training & License Examination Qg F-Adrrunnstrative 5 wn G4)perational Error (Explain) Exhibit 1 - Same Source m ", n 19/77) IIOther (Explain) o

DOCKET NO. WM6 UNITSHUTDOWN5 AND F0WER REDUCDOMS . ,

UNIT NAME I DATE 6/15/84 CORWLETED BY 3. c. cesare TELEPHONE 6nt-469- m

e.

• E E 3? 3 $YI Licensee .E*, $"L Cause & Corrective No. Date k 3g ( .g g & Event g Action to

• $ E j di g Report * <a O g{ Prevent Recurrence 6

6 5/8/84 F 77.6 A 1 84-028 AD HCU During adverse weather, a loss of 500 KV offsite power supply occurred which caused both Reactor Recirc pumps to trip. Rec. ire pump "A" was restarted. The "B" loop could not be restored due to problems with the flow control valves' hydraulic power unit (HPU). A shutdown was, there-fore, completed as required by Tech-nical Specification 3.4.1.1. One subloop of the HPU had become air bound; the other subloop had its operating pressure set incorrectly due to drift of the pressure gauge used in setting the pressure. The gauge was recalibrated and the operating pressure set correctly.

I 2 3 4

. F: Forced Reason: Method: Exhibit G-Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data .o > >

B-Maintenance of Test 2-Manual Scram. Entry Sheets for Licensee $ tv n C-Refueling 3-Automatic Scram. Event Report (LER) File (NUREG- to h g D-Regulatory Restriction 40ther (Explain) 0161) e m :r E-Operator Training & License Examination oC@

moo F-Administrative 5 G-Operational Error (Explain) Exhibit I- Same Source ed" (9/77) llother (Explain) "o

DOCKET NO. 50-416 UNIT SHUTDOWNS AND POWER REDUCTIONS UNIT NAME 1 DATE 6/15/84 Y

May REPORT MONTH E 601 96 -7s s c

.5? 3 yY3 Licensee Ev, {e. Cause & Corrective No. Ihte k 3g 4 25E Event g mu pV Action to Prevent Recurrence F

f: 5 j;jj g Repor a g c5 7 5/25/84 F 25.8 A 3 84-030 SD FCV The Reactor scrammed on low water BN level 3. The condensate booster pumps and feedwater pumps tripped when a broken position arm linkage on the condensate minimum flow control valve allowed the valve to open creating a recirculation path to the condenser, bypassing the booster pumps. Operators attempted to start RCIC manually to restore the level but the RCIC turbine tripped on over-speed. The scram occurred and RCIC was restarted to restore level. A mechanical restrictor was placed on the RCIC turbine governor valve to limit steam flow and prevent the resulting overspeed trip. The control valve positioner arm was replaced.

7 3 4 I 2 Reason: Method: Exhibit G Instructions F: Forced 'o S: Scheduled A-Equipment Failure (Explain) l-Manual 2-Manual Scram.

for Preparation or Data Entry Sheets for Licensee $g> E B-Maintenance of Test C-Refueling 3-Automatic Scram. Event Report (LER) File (NUREG- S hg 4-Other (Explain) 0161) w m :r D-Regulatory Restriction E-Operator Training & Ucense Examination oR@

F-Administrative 5 *85 mw Exhibit I Same Source (9/77)

Goperational Error (Explain)

Ilother (Explain) "o

Attachment to UNIT SHUTDOWNS AND POWER REDUCTIONS AECM-84/0331 Pagn 8 of 8 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 should be noted, even though the unit may not have been reduction. Enter the first four parts (event year, sequential shut down completely l. For such reductions in power level, 'eport number, occurrence code and report type) of the five the duration should be listed as zero,the method of reduction part designation as described 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 (NUREG-0161). 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 tc ascertain whether oi describe the circumstances of the outage or power reduction. n t 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 n ted as not applicable (N/A).

for that calendar year. When a shutdown or significant power SYSTEM CODE. The system in which the outage 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 rnit 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 Entry beginsin one report period and ends in another, an entry should Sheets for Licensee Event Report (LER) File (NUREG.0161).

be mads 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 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.

11tIR 4 TION Self explanatory. When a shutdown extends beyond the end of a report period, count only the time to the Components that do not fit any existing code should be de-s gnated XXXXXX. The code ZZZZZZ should be used for end of the report period and pick up the ensuing down time in the following report periods. Report duration of outages events where a component designation is not apphcable.

rounded to the nearest tenth of an hourio facihtste summation.

The sum of the total outage hours plus the hours the genera. CAUSE & CORRECTIVE ACTION TO PREVENT RECUR-RENCE. Use the column in a narrative fashion to amplify or tot was on hne should equal the gross hours in the reportmg explain the circumstances of the shutdown or power reduction.

Puiod. The column should include the specific cause for each shut-down or significant power reduction and the immediate and REASON. Categorue b) letter degnation in accordance with the table appearing on the report form. If category 11 contemplated long term corrective action taken,if appropri.

must be used. supply briet comments. ate. This column should also be used for a description of the maior safetprelated corrective maintenance performed during METHOD OF SHUTTING DOWN THE REACTOR OR the outage or power reduction including an identification of REDUCING POWER. Categorue by number designation the entical path activity and a report of any smgle release of radioactivity or single radiation exposure specifically assoen INote that this differs trom the Edison Electne Institute ated with the outage which accounts for more than 10 percent (Elli definitions of " Forced Partial Outage" and " Sche. of the allowable annual values.

duled Partial Outage. for these terms, il I uses a 6hange of For long textual reports continue narrative on separate papet 30 MW as the break pomt. For larges power reactors.30 M% and referense the shutdown or power reduction foi ihn is too small a 6hange to wanant esplananon. narrative PU77 i

MISSISSIPPI POWER & LIGHT COMPANY

] Helping Build Mississippi N P. O. B O X 16 4 0, J A C K S O N. MI S SIS S IP PI 3 9 2 0 5 June 15, 1984 NUCLEAR LICENSING & SAFETY DEPARTMENT Mr. Richard C. DeYounk, Director Office of Inspection and Enforcement U.u. Nuclear Regulatory Commission Washing ~ ton, D.C. 20555 Attention: Document Control Desk

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-13 File 0260/L-835.0 Monthly Operating Report AECM-84/0331 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 1 for May, 1984 (attachment).

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

Yours truly,

~

. F. Dale Director of Nuclear Licensing

& Safety GWD/JGC:Im Attachment cc: Mr. J. B. Richard (w/a)

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

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

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

Mr. J. P. O'Reilly, Regional Administrator (w/a)

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

Office of Resource Management Q U.S. Nuclear Regulatory Convaission Washington, D.C. 20555 h

AJ1 )g Member Middle South Utilities System