ML20148L577

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Monthly Operating Repts for May 1997 for Zion Generating Station,Units 1 & 2
ML20148L577
Person / Time
Site: Zion  File:ZionSolutions icon.png
Issue date: 05/31/1997
From: Cygan J, Starkey R
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9706190294
Download: ML20148L577 (13)
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Commonw calth 1:thwn Company Zion Grnerating St.ition 101 Shiloh lloukwant Zion,11. N H PN 2'97 Tel H 6"'-7 Kr20M i June 11. 1997 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Dear Sir:

Attached is the May Operating Status Report.

Yb E. S. Starkey Plant General Manager Zion Station RSS/jlc Enclosure cc: Regulatory Assurance USNRC Document Control H. Keiser V A. B. Beach (NRC) /\

D. Farrar D. R. Eggett /

INP0 Div. of Enforcement Health s State of Illinois /IDNS F. Yost \

NRC Inspector. Zion IDNS Inspector. Zion l l Operating Engrs. 4 C. Y. Shiraki  !

Master File l l

100039 l

I hh lh 9706190294 970531 i PDR ADOCK 05000295 i R PM _

A Unicom Company l

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OPERATING DATA REPORT DOCKET NO. 50-295 i DATE 6/11/97 l COMPLETED BY J. CYGAN TELEPHONE (847)746-2084 X3169 OPERATING STATUS I

1. Unit Name: Zion Unit 1 l
2. Reporting Period: 0000 050197 to 2400 053197 Notes
3. Licensed Thermal Power (MWt): 3250
4. Nameplate Rating (Gross MWe): 1085
5. Design Electrical Rating (Net MWe): 1040 l 6. Maximum Dependable Capacity (Gross MWe): 1085  ;

j 7. Maximum Dependable Capacity (Net MWe): 1040 l 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last l Report, Give Reasons: N/A  ;

I 9. Power Level To Which Restricted If Any (Net MWe): N/A I

10. Reasons For Restrictions If Any: N/A This Month Yr-to-Date Cumulative
11. Hours in Reporting Period 744.0 3.623.0 205.271.0 l 12. Number Of Hours Reactor Was Critical 00.0 1.238.3 138.741.3 l 13. Reactor Reserve Shutdown Hours 00 T 0.0 2.612.8 1
14. Hours Generator On-Line 00.0 1.238.3 134.804.2
15. Unit Reserve Shutdown Hours 00.0 0.0 0.0 l 16. Gross Thermal Energy Generated (MWH) 00.0 3.442.179.0 398.004.120
17. Gross Electrical Energy Generated (MWH) 00.0 1.137.150.0 129.673.297
18. Net Electrical Energy Generated (MWH) 00.0 1 079.324.0 123.571.046
19. Unit Service Factcr 00.0 34.2 65.7
20. Unit Availability Factor 00.0 34.2 65.7 Unit Capacity Factor (Using MDC Net)
21. 00.0 28.6 57.9
22. Unit Capacity Factor (Using DER Net) 00.0 28.6 57.9 l 23. Unit Forced Outage Rate 00.0 00.0 15.8
24. Shutdowns Scheduled Over Next 6 Months (Type Date, and Duration of Each)

l l 25. If Shut Down At End Of Report Period. Estimated Date of Startup: No estimated date

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved

' INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION l

OPERATING DATA REPORT DOCKET NO. 50-304 DATE 6/11/97 COMPLETED BY J. CYGAN TELEPHONE (847)746-2084 X3169 OPERATING STATUS

1. Unit Name: Zion Unit 2 l
2. Reporting Period: 0000 050197 to 2400 053197 Notes '
3. Licensed Thermal Power (MWt): 3250
4. Nameplate Rating (Gross MWe): 1085
5. Design Electrical Rating (Net MWe): 1040
6. Maximum Dependable Capacity (Gross MWe): 1085
7. Maximum Dependable Capacity (Net MWe): 1040
8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons: N/A
9. Power Level To Which Restricted. If Any (Net MWe): N/A
10. Reasons For Restrictions. If Any: N/A This Month Yr-to-Date Cumulative
11. Hours In Reporting Period 744.0 3.623.0 198.984.0
12. Number Of Hours Reactor Was Critical 00.0 00.0 138.378.7
13. Reactor Reserve Shutdown Hours 00.0 00.0 226.1
14. Hours Generator On-Line 00.0 00.0 135.098.8
15. Unit Reserve Shutdown Hours 00.0 00.0 0.0
16. Gross Thermal Energy Generated (MWH) 00.0 00.0 402.647.369 l 17. Gross Electrical Energy Generated (MWH) 00.0 00.0 130.102.951 ,
18. Net Electrical Energy Generated (MWH) 00.0 00.0 124.095.088 l
19. Unit Service Factor 00.0 00.0 67.9
20. Unit Availability Factor 00.0 00.0 67.9
21. Unit Capacity Factor (Using MDC Net) 00.0 00.0 60.0
22. Unit Capacity Factor (Using DER Net) 00.0 00.0 60.0 l 23. Unit Forced Outage Rate 00.0 00.0 13.3
24. Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duration of Each):
25. If Shut Down At End Of Report Period. Estimated Date of Startup: No estimated date
26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY ,

i INITIAL ELECTRICITY '

COMMERCIAL OPERATION l

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-295 UNIT NAME Zion Unit 1 DATE 6/11/97 -

COMPLETED BY J. CYGAN TELEPHONE (847) 746-2084 x3169 REPORT MONTH May 1997 ,

1 Duration 2 Method of Licensee System Component Cause & Corrective No. Date Type (Hours) Reason Shutting Event Code 4 Code 5 Action to  !

Down 3 Report # Prevent Recurrence Reactor 4 05/01/97 5 744.0 *H 1 97-005 Unit 1 Remained Off-Line For The Entire Month For Maintenance Outage Z1M06.

  • H - Please refer to column on right (Cause & Corrective Actions) 1 2 3 4 F: Forced Reason: Method Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data ,

B-Maintenance or Test 2-Manual Trip Entry Sheets for Licensee '

C-Refueling 3-Auto Trip Event Report (LER) File D-Regulatory Restriction 4-Continued (NUREG-0161) '

E-Operator Training & Licensee Examination 5-Reduced Load F-Administrative 5 G-Operational Error (Explain) Exhibit 1 - Same Source .

H-Other (Explain) i

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-304 UNIT NAME Zion Unit 2 DATE 6/11/97 -

COMPLETED BY J. CYGAN TELEPHONE (847) 746-2084 x3169 REPORT MONTH May 1997 1 Duration 2 Method of Licensee System Component Cause & Corrective No. Date Type (Hours) Reason Shutting Event Code 4 Code 5 Action to Down 3 Report # Prevent Recurrence Reactor 7 05/01/97 5 744.0 C 1 Unit 2 Remained Off-Line For The Entire Month For The Continuation Of Refueling Outage Z2R14.

1 2 3 4 F: Forced Reason: Method Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Trip Entry Sheets for Licensee C-Refueling 3-Auto Trip Event Report (LER) File D-Regulatory Restriction 4-Continued (NUREG-0161)

E-Operator Training & Licensee Examination 5-Reduced Load F-Administrative 5 G-Operational Error (Explain) Exhibit 1 - Same Source H-Other (Explain)

AVERAGE DAILY UNIT POWER LEVEL i

DOCKET NO. 50-295 UNIT Zion Unit 1 DATE 6/11/97 COMPLETED BY J. CYGAN TELEPHONE (847) 746-2084 x3169 MONTH May 1997 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 -7 17 -7 2 -7 18 -7 3 -7 19 -7 4 -7 20 -7 5 -7 21 -6 6 -7 22 -6 7 -7 23 -6 l 8 -7 24 -6 9 -7 25 -6 10 -7 26 -6 11 -7 27 -6 12 -7 28 -6 13 -7 29 -6 14 -7 30 -6 15 -7 31 -6 l

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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, i

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-304 UNIT Zion Unit 2 DATE 6/11/97 COMPLETED BY J. CYGAN TELEPHONE (847) 746-2084 x3169 May IT7 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 -7 17 -6 2 -7 18 -6 3 -7 19 -6 4 -7 20 -6 5 -7 21 -5 6 -7 22 -5 7 -6 23 -5 8 -6 24 -5 9 -7 25 -5 10 -7 26 -5 11 -6 27 -5 12 -7 28 -5 13 -6 29 -5 14 -7 30 -5 15 -6 31 -5

- 16 -6 INSTRUCTIONS l On this format, list the average daily unit power level in MWe-Net for each day in the i reporting month. Compute to the nearest whole megawatt.

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May 1997 4

SUMMARY

OF OPERATING EXPERIENCE UNIT 1 Unit 1 began May off-line for a continuation of Maintenance Outage (Z1M06) and ,

remained off-line for the entire reporting period. There is no scheduled date l for Unit I to be back on-line.

i UNIT 2 Unit 2 began May off-line for a continuation of Refueling Outage (Z2R14) and f remained off-line for the entire reporting period. ihere is no scheduled date

! for Unit 2 to be back on-line.

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May 1997 MAJOR MAINTENANCE EQUIPMENT NAME WORK PERFORMED l (UNIT 1)

IC CW PP Inspect / Repair Completed 005: 04/28/97 - 05/31/97

'0' D/G Output Breaker Repair )

Completed  !

00S: 05/19/97

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COMMENT: NO RETURN TO SERVICE DATE I

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May 1997 ,

MAJOR MAINTENANCE EQUIPMENT NAME WORK PERFORMED (UNIT 2) 2B CW PP Breaker Overhaul / Inspection Completed 00S: 04/13/97 - 05/15/97 2A C/CB PP Cleaning / Inspection 00S: 04/26/97

  • 2C CS PP Starting Solenoid Changeout 005: 04/29/97
  • 2A D/G Repair Fuel Jerk Pump -

Completed 005: 05/07/97 - 05/08/97 28 C/CB PP Lube .

Completed i 00S: 05/08/97 - 05/09/97 2A CW PP Lube Completed -

005: 05/18/97 - 05/20/97 ,

2C C/CB PP Breaker Work Completed l 005: 05/21/97 - 05/29/97 2A FW PP 28 Oil Pump  !

Completed .

00S: 05/22/97 - 05/29/97  !

! l COMMENT: NO RETURN TO SERVICE DATE l

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REFUELING INFORMATION REQUEST OVESTIONS:

1. Name of facility.
2. Scheduled date for next refueling shutdown.
3. Scheduled date for restart following refueling.

4 Will refueling or resumption of operation thereafter require a technical  !

specification change or other license amendment?

If answer is yes, what, in general, will these be?

If answer is no, has the reload fuel design and core configuration been reviewed by your Plant Safety Review Committee to determine whether any

, unreviewed safety questions are associated with the core reload (Ref. 10 l

CFR Section 50.59)?

If no such review has taken place, when is it scheduled?

5. Scheduled date(s) for submitting proposed licensing action and supporting information.
6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures.
7. The number of fuel assemblies: (a) in the core and (b) in the spent fuel storage pool.
8. The present licensed spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been requested or is l planned, in the number of fuel' assemblies.

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9. The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity.

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- l l , REFUELING INFORMATION REQUEST 1

UNIT 1 - ANSWERS:

1. Zion Unit 1. I l 2. Cycle 15 is scheduled to shutdown September 6, 1997 for refueling.

l l 3. Cycle 16 is scheduled to start up November 5. 1997.

4. The following License Amendments are required to allow resumption of operation after Refueling Outage Z1R15.

e Increase Steam Generator plugging limit. Required to e1sure Unit derating will not be required based on Steam Generator plugging.

e Authorize Steam Generator tube sleeving per new Topical Report.

Required to allow additional sleeving options to minimize plugging.

e Authorize new F* limit on tube re-roll and new EF* re-roll limit.

! Required to support increased plugging limit. Required to allow additional re-roll options to minim 9e plugging.

The Reload Safety Analysis for cycle 16 will be completed during Z1R15.

5. Projected submittal of License Amendments: June-July 1997.

l 6 Not applicable.

The number of fuel assemblies (a) in the core is 0, and (b) in the spent fuel storage pool from Zion Unit 1 is 1125.

8. The present licensed spent fuel pool storage capacity (shared with Zion Unit 2) is 3012 fuel assemblies. Of these 3012 storage locations, 11 are unavailable and 239 are inaccessible pending completion of the Offset Tool Modification (M22-90-0-008A, C).
9. The projected date of the last refueling than can be discharged to the spent fuel pool, assuming the present licensed capacity of 3012 locations (11 out of 3012 are unavailable) is April 2006 (from Z1R21) based on the 1997 Projected Comed Overhaul Schedule. This assumes the Offset Tool Modification (M22-90-0-008A, C) will be installed prior to June 2003.

This projected date is subject to change based on outage durations or i Overhaul Schedule changes.

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REFUELING INFORMATION REQUEST UNIT 2 - ANSWERS:

1. Zion Unit 2.
2. Cycle 14 shutdown September 19, 1996 for refueling.
3. Cycle 15 has no scheduled date for start up.
4. There are no outstanding License Amendments required for startup of Unit 2 following Refueling Outage Z2R14.
5. There are no outstanding proposed License Amendments required for startup of Unit 2 following Refueling Outage Z2R14.
6. New fuel reloaded into Unit 2 Cycle 15 core incorporates the following design changes:

e Selected standard Integral Fuel Burnable Absorber (IFBA) patterns have been updated following a Westinghouse Core Engineering investigation of peripheral IFBA rod loading within the fuel assembly. The net effect of this change is to achieve the most efficient absorber orientation at Beginning of Life (BOL) and for burnups through 5000 MWD /MTU. These patterns provide self-limiting features that mitigate the extent of DNB propagation. In addition, these IFBA patterns provide significant peaking factor and reactivity holddown benefits.

e IFBA rods will have a nominal B-10 enrichment loading with a reduction in backfill pressure from 200 to 100 psig. The nominal B-10 loading is 1.77 mg/ inch. Rod internal gas pressure has an effect on two of the fuel rod design criteria that are evaluated for the reload: Rod internal pressure and clad stress criteria.

The Zion Unit 2 Cycle Specific fuel design analysis has been performed and has demonstrated that the design criteria were met.

7. The numter of fuel assemblies (a) in the core is 193 and I (b) in the spent fuel storage pool from Zion Unit 2 is 984. l
8. The present licensed spent fuel pool storage capacity (shared with Zion Unit 1) is 3012 fuel assemblies. Of these 30)2 storage locetions. 11 are unavailable and 239 are inaccessible pending completion of tr,e Offset Tool Modification (M22-90-0-008A, C).
9. The projected date of the last refueling that can be discharged to the spent fuel pool, assuming the present licensed capacity of 3012 locations .

(11 out of 3012 are unavailable) is April 2006 (from Z1R21) based on the l 1996 Projected Comed Overhaul Schedule. This assumes the Offset Tool '

, Modification (M22-90-0-008A. C) will be installed prior to June 2003.

l This projected date is subject to change based on outage durations or Overhaul Schedule changes.

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