ML20147J108

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Summary of 880218 Meeting W/Gpu in Rockville,Md to Discuss Matters Pertaining to 7R Refueling Outage Planned to Commence on 880617.Attendance List & Viewgraphs Encl
ML20147J108
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 02/26/1988
From: Hernan R
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 8803090178
Download: ML20147J108 (23)


Text

.

'## ~go UNITED STATES 8 o NUCLEAR REGULATORY COMMISSION

,1 WASHINGTON, D. C. 20656

  • February 26, 1988 Docket No. 50-289 LICENSEE: GPU Nuclear Corporation FACILITY: Three Mile Island Unit 1

SUBJECT:

SUMMARY

OF FEBRUARY 18, 1088 MEETING WITH GPU NUCLEAR TO DISCUSS MATTERS RELATED TO THE 1988 REFUELING OUTAGE (7R)

The NRC staff met with representatives of GPU Nuclear on February 18, 1988 in Rockville, Maryland (One White Flint North) to discuss matters pertainino to the 7R refueling outage planned to comence on June 17, 1988. The meeting provided a forum for the licensee to discuss key aspects of the license amend-ment request to be submitted to the NRC on April 1, 1988 in support of the refueling outage and to allow the staff to identify any areas where particular information will be required for the staff to conduct its review of the amendment request.

The amendment request will include NRC approval to raise the rated power level from E 535 MWt to 2,568 MWt, a 1.3% increase in power output. The licensee pointed out that most of the safety analyses used to initially license TMI-1 were perfomed on the basis of a 2,568 MWt power level assumption so that operation at this power level is already Bounded by existing analyses. A systematic review of all implications of the higher power rating has been undertaken as outlined in Enclosure 2.

The licensee discussed TMI-1 fluence reduction program and materials surveillance progran and stated that new calculaHons using the recently issued Regulatory Guide 1.99, Revision 2 may indicate an even higher PTS margin than previous calculations yielded. Details of this topic are shown in Enclosure 2.

Commensurate with longer fuel cycles in the future, THI-1 will start loading new fuel with higher enrichment values (up to 3.63 weight percent U-235 for l cycle 7). To support the intent to use more highly enriched fuel, the i licensee has applied for an amendment request to raise the storage enrichment limits frem 3.5 to 4.3 weight percent. The staff is presently reviewing this ]

request and expects to issue an anendment before May 1, 1988.

The licensee discussed changes that will be required to the technical specifi- J cat'ons to support ster +up from this refueling nutage and requested issuance  ;

of the required :niendment by July 1, 1988. Rased on the information presented  !

at this meeting, the staff does not anticipate any significant technical or schedular difficulties in reviewing the amendment requests needed to support Cycle 7 of operation, l

8803090170 080226 PDR ADOCK 05000209 i P pog 1

4 The licensee questioned how the ACRS would become involved, if at all, in the request to raise the rated power level. The staff noted that ACPS will be given a copy of the incoming amendment request and the staff's safety evalua-tion thereof. ACRS will then decide if they want to review these documents on a formal basis. The staff does not foresee ACRS review of these documents as delaying issuance of the amendments required for restart.

Enclosure 1 is a list of attendees at this meeting. Enclosure 2 is a copy of the visual aids used by the licensee during the meeting.

i 4M < M ' k %h Ronald W. Hernan, Senior Project Manaaer Project Directorate I-4 Division of Reactor Projects I/II

Enclosures:

As stated cc w/ attachments:

See next page i

LA:PDI-47 PM:PDI-4 of D:PDI-SNorris N PHernan:bd .1Stol 02/)b/C 02/10/88 02/1( 8 l

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h Mr . Henry D. Hukill GPU Nuclear Corporation Three Mile Island Nuclear Station,

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E Unit No. 1 C

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G. Broughton Richard Conte r 0&M Director, TMI-1 Senior Resident Inspector (TM1-1)

GPU Nuclear Corporation U.S.N.R.C.

Post Office Box 480 Post Office Box 311 Middletown, Pennsylvania

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17057 Middletown, Pennsylvania 17057 Richard J. McGoey Manager, PWR Licensing Regional Administrator, Region I GPU Nuclear Corporation U.S. Nuclear Regulatory Comission 1 100 Interpace Parkway 4 -

475 Allendale Road ^ --

Parsippany, New Jersey 70754 King of Prussia, Pennsylvania 19406 h EFir- 25 i C. W. Smyth Robert B. Borsum EE0 MIN N N 5

,i TMI-1 Licensing Manager

. GPU Nuclear Corporation Babcock & Wilcox Nuclear Power Generation Division

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k Ernest L. Blake, Jr. , Esq.

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Shaw, Pittman, Potts & Trowbridge Governor's Office of State Planning and Development

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Larry Hochendoner Dauphin County Commissioner Thomas M. Gerusky, Director Bureau of Radiation Protection k'.

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U.S. Nuclear Regulatory Comission H RFD!1 - Geyers Church Road Washington, D.C. T

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. >c MEETING ATTENDANCE LIST # 7 [: 9 k L'~ ; '

MEETING ON TMI-l 7R REFUELING OUTAGE 4 i. . '. . ...;

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FEBRUARY 18, 1988 . '

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- Walter L. Brooks NRC/NRR/SRXB C., . .g^ gk.w a I Susan Peleschak NRC/NRR/SRXB Ch 8;t. ' 'llp:%y . .

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David Distel GPUN  :  ? f . ;' '

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TMI-1 CYCLE 7 REL0AD REPORT GPUN/NRC MEETING FEBRUARY 18, 1988 AGENDA I. INTRODUCTION A. MEETING PURPOSE B. STATUS OF CYCLE 6 C. SCHEDULE FOR CYCLE 7 0UTAGE D. STATUS OF CYCLE 7 RELOAD REPORT II. RELOAD DESIGN A. 18-MONTH CYCLE B. CYCLE DESIGN C. PTS / FLUENCE REDUCTION ,

III. DIFFERENCES FROM TMI-1 CYCLE 6 A. RATED POWER UPGRADE TO 2568 MWT B. ENRICHMENT INCREASE TO 3.63 WT %

C. ZIRCALOY INTERMEDIATE GRIDS D. FUEL R0D PREPRESSURE REDUCTION E. FLECSET APPLICATION F. CONSERVATIVE DOSE EVALUATION G. TECHNICAL SPECIFICATION CURVES 8

CORE PROTECTION SAFETY LIMIT / BASES S

VARIABLE LOW PRESSURE SETP0 INT REMOVAL 0 POWER-DEPENDENT TILT LIMIT 4 ERROR ADJUSTED CURVES H. STARTUP PROGRAM IV. GPUN

SUMMARY

V. DISCUSSION

I. INTRODUCTION A. MEETING PURPOSE 4 CYCLE 7 RELOAD BRIEFING G PRESUBMITTAL DISCUSSION B. CYCLE 6 STATUS 0 100% FP OPERATION 0 CURRENT PLANNED MINI-0UTAGE (~ 4 DAYS)

O CORE AT 302 EFPD 0 EXPECTED SHUTDOWN 6/17/88 0 ABOUT 425 EFPD C. CYCLE 7 0UTAGE SCHEDULED 0 START JUNE 17TH 0 END ABOUT AUGUST 20TH 0 DURATION ~2 MONTHS S

APPROVED TECH SPEC AMENDMENT: JULY 1sT D. STATUS OF CYCLE 7 RELOAD REPORT 6 FINAL RR TO GPUN: MARCH 8TH t TSCR TO NRC: APRIL 1sT i e

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II. RELOAD DESIGN A. 18 MONTH CYCLE 9 LOW LEAKAGE DESIGN 8 445 +/- 15 EFPD 0 76 FRESH FUEL ASSEMBLIES B. CYCLE DESIGN 0 CORE MAP (FIGURES 3-1,3-2) e CONTROL R0D MAP (FIGURE 3-3) e BPRA MAP (FIGURE 3-4) l 4

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Figure 3-2. Enrichment and Burnup Distribution for TMI-1 Cycle 7 8 9 to 11 12 13 14 ~15 2.85 2.95 2.85 2.85 2.85 3.63 2.85 2.85 17,558 0 13,331 0 16,507 0 15,735 17,554 2.85 2.85 2.85 2.85 2.85 3.63 2.85 K

16,000 0 11,292 0 16,347 0 16,344 2.95 2.85 2.85 3.63 2.85 2.85 L

16,817 0 16,236 0 12,711 16,695 2.85 2.85 2.85 3.63 M

13,329 0 13,746 0 2.95 3.63 2.85 16.451 0 16.035 2.95 ..

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/ Figure 3-3. Control Rod Locations and Group Designations for TMI-1 Cycle 7

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B 1 6 1 C 3 5 5 3 D 7 8 7 8 7 E 3 5 4 4 5 3 F 1 8 6 2 6 8 1 G 5 4 2 2 4 5

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Figure 3-4. L8P Enrichment and Distribution for TMI-1 Cycle 7 8 9 10 11 12 13 14 ~15 H 1.000 1.000 1.312 X

1.000 0.800 0.500 0.200 L

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No. of Concentration.

BPRAs wt% B4C 12 1.312 X.XXX 8 1.000 LBP Concentration 16 0.800 (wt% B4 C in A123 0) 8 0.500 2 0.200 Total 68 3-5

II. RELOAD DESIGN (CONT'D)

C. PTS FLUENCE REDUCTION BACKGROUND 0 JANUARY 1986 BAW-1895 0 TMI-1 MET PTS "PTS EVALUATION IN CRITERIA AT ACCORDANCE WITH CRITICAL WELD 10CFR50.61 FOR B&WOG G ASSUMED LL CY 6 REACTOR PRESSURE 7; VLL CY 8 VESSELS" 8 MARCH 1986 BAW-1901 0 SAME CYCLE SCHEME "ANALYSIS OF CAPSULE ASSUMPTIONS TMI-1C GPUN TMI-1 RV METHODS AS 4

MATERIALS SURVEILLANCE BAW-1901 PROGRAM" 9 100F PTS MARGIN 4 CYCLES 6 AND 7 LOW LEAKAGE DESIGN 0 ABOUT 30 %

FLUENCE DECREASE TWICE-BURNED ASSEMBLY 0 ADDITIONAL ON MAJOR AXIS (FIGS. FLUENCE REDUC-3-1 AND 3-2 TION AT CRITICAL WELDS CY6: 25% -

CY7: 20%

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III. DIFFERENCES CY 6 TO 7 A. RATED POWER UPGRADE G 2535 MWT TO 2568 MWT (1.3% INCREASE) ,

e PLANT SYSTEM REVIEW

. BALANCE OF PLANT l

. TURBINE-GENERATOR (NAMEPLATE RATING INCREASE)

. NSSS

. RPS

. ESFAS INSTRUMENTATION

. ELECTRICAL 0 SAFETY ANALYSIS REVIEWS

. FSAR ACCIDENTS PLANT RESPONSE (M0ST AT 2568 MWT) 0FFSITE DOSE (CYCLE 7 AT 2568 MWT)

EMERGENCY PROCEDURE GUIDELINES

. ATWS STEAM GENERATOR TUBE PLUGGING EFFECTS G

6

, n_ , ,-,- - - - . . . . - _ _ . _ - . . , _ . _ _ , - _ . . . , . _ . , . . . _ , _ , , , . _

III. DIFFERENCES CY 6 TO 7 (CONT'D)

A. TMI-1 RATED POWER UPGRADE (CONT'D) 0 OPERATIONAL REVIEWS CYCLE 7 TECHNICAL SPECIFICATION LIMITS ARE FOR 2568 MWT REACTOR VESSEL FLUENCE -

CORE DESIGN (FSAR CHAPTER 3 0F 2568 MWT)  :

0 ENVIRONMENTAL REVIEWS  !

NORMAL RADIOLOGICAL RELEASES

. THERMAL IMPACT l

. CHEMICAL IMPACT  !

. WATER USAGE FISH & ENTRAINMENT IMPINGEMENT l COOLING TOWER EFFECTS / SALT DRIFT

. METEOROLOGY LAND USE/ POPULATION /PURLIC FACILITIES 1 O

III. DIFFERENCES CY6 T0 7 (CONT'D)

A. THI-1 RATED POWER UPGRADE (CONT'D) e CONCLUSIONS

. PLANT SYSTEMS CAN BE OPERATED WITHIN THEIR DESIGN LIMITS AT 2568 MWT

. PRESENT SAFETY ANALYSIS RESULTS BOUND t

OPERATION AT 2568 MWT

. PRIMARY SYSTEM DESIGN PARAMETERS REMAIN UNCHANGED

. ENVIRONMENTAL IMPACT IS B0UNDED BY PRESENT LIMITS i

III. DIFFERENCES CY6 TO 7 (CONT'D) 1 8. ENRICHMENT INCREASE 9 3.63 WT%

4 36 0F 76 FRESH ASSEMBLIES (FIG. 3-2) 9 4 FAs 0 2.95 W/0; 36 FAs 0 2.85 W/0 0 SPENT FUEL P0OL W/0 UPGRADE

. PREVIOUS SFP LIMIT: 3.5 W/0

. NEW ANALYSIS LIMIT: 4.3 W/0

. TSCR SUBMITTED; JAN 1988

. TARGET APPROVAL: MAY 1sT

. FUEL DELIVER'/ STARTS: MAY 2ND

. NRC REVIEW STATUS 1

l i

III. DIFFERENCES (CONT'D)

C. ZIRCALOY INTERMEDIATE GRIDS 0 PREVIOUSLY USED IN: RANCHO SECO OCONEE 1, 2, 3 CRYSTAL RIVER 3 0 DESIGN APPROVED PER BAW-1781P (RANCHO SECO CY7 RELOAD REPORT, V0L 1, APRIL 1983) 0 USE OF BWC CHF CORRELATION 0 BWC 95/95 MDNBR: 1.18 0 CORE BYPASS FLOW INCREASE

. CY6: 8.4%; CY7: 8.8%

. ACTUAL BYPASS: 7.6%

_--.m_ ____,_. _ . . . - - . _ - _ _ _ . _ _ _ _ . _ - - - _ _ , -_ - - _ _ ,..___ .._... __._ ___.. _ __._ ___.- ________ .__________.._-_-..~ ____.. - _ . - - -

III. DIFFERENCES (CONT'D)

D. FUEL R0D PREPRESSURE REDUCTION O PREVIOUSLY USED IN:

OCONEE 1, 2, 3 CRYSTAL RIVER 3 ANO-1 0 HIGH BURNUP BENEFIT 9 38 0F 75 FRESH FAs l 0 LOCA KW/FT CREDIT NOT TAKEN IN CY7 l

l l

l 1

1

III. DIFFERENCES (CONT'D)

E. FLECSET APPLICATION 0 FLECSET APPROVED OCTOBER 1987 8 EM CHANGE COMPLETED 9 1/2 KW/FT BENEFIT 02-F00T LEVEL OF LOCA LIMITS F. CONSERVATIVE DOSE EVALUATION 4 CY6 TO CY7 RADIONUCLIDE INVENTORY CHANGES INSIGNIFICANT (CYCLE 7 AT 2568 MWT) 9 BOUNDING DOSE EVALUATION PERFORMED 10% INVENTORY INCREASE UPDATED PLANT PARAMETERS S RESULTS-INCREASED DOSE VALUES OVER PREVIOUS ANALYSES WELL BELOW 10CFR100 LIMITS FUTURE FSAR BASES e- - r,-,- , - --,,-----a,---.---.-,-----w---,-----e.-

, , --n,,,,e-.,,- w,,,,,,--,,,,-,_.nm.,,mre.,,-n-v.,ww-.ge------en,we~r-,mn-v w.ww--

4 III. DIFFERENCES (CONT'D)

G. TECHNICAL SPECIFICATION 8 SAFETY LIMITS CORE PROTECTION SAFETY LIMITS

. PRESSURE-TEMPERATURE 0 LYNXT CROSSFLOW ANALYSIS '

O LESS-RESTRICTIVE P-T LIMITS

. AXIAL POWER IMBALANCE CORE PROTECTION SAFETY BASES

. 4, 3, 2 PUMPS 8 LIMITING SAFETY SETTINGS P-T ENVELOP SET 0 PINTS l

. VLP TRIP REMOVAL PROTECTION BY HIGH TEMPERATURE AND LOW PRESSURE SETPOINTS AXIAL POWER IMBALANCE SETPOINTS S LIMITING CONDITIONS FOR OPERATION R0D POSITION LIMITS THREE BURNUP WINDOWS l 2 PUMP / 3 PUMP / 4 PUMP CURVES

. ERROR-ADJUSTED INDICATED % RATED POWER

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III. G. TECHNICAL SPECIFICATION CURVES (CONT'D)

OPERATIONAL IMBALANCE LIMITS 0 THREE BURNUP WINDOWS S ERROR-ADJUSTED 0 INDICATED POWER I LOCA LIMITED MAXIMUM LHR  !

O NUREG-0630/FLECSET (0-1000 MWD /MTU) 1 0 TAC 02 (DENSIFICATION PERIOD) (1000-2600 .

l MWD /MTU) 0 TAC 0 2 (REMAINDER OF CYCLE) (AFTER 2600 3 MWD /MTU) l l

POWER-DEPENDENT TILT LIMIT  !

e 0-50% FP l 0 AB0VE 50% FP 1 l

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III. DIFFERENCES (CONT'D)

H. STARTUP PROGRAM

. FLUX SYMMETRY TEST POWER DOPPLER MEASUREMENT TECHNIQUE A

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Meeting Sumary Distribution .r' ,

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W4f14 NRC A Local PDRs S. Varga B. Boger J. Stn1z OGC-WF E. Jordan J. Partlow ACRS(10)

H8Clayton (Region I only)

R. Conte (Region I)

NRC

Participants:

M. Hodges R. Hernan W. Brooks S. Peleschak (Region I)

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