ML20210V109

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Summary of 860916 Meeting W/Util & B&W Re Cycle 6 Reload Rept & Technical Approach Utilized by B&W & Util to Identify Problem Areas in Rept.List of Attendees & Meeting Handout Encl
ML20210V109
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 09/30/1986
From: Thoma J
Office of Nuclear Reactor Regulation
To: Stolz J
Office of Nuclear Reactor Regulation
References
NUDOCS 8610100504
Download: ML20210V109 (20)


Text

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. SeptembLr 30, 1986 h' MEMORANDUM FOR: John -F. Stolz, Director PWR Project Directorate #6 Division of PWR Licensing-B FROM: John Thoma, Project Manager PWR Project Directorate #6 Division of PWR Licensing-B

SUBJECT:

TMI-I RELOAD MEETING SUMMARIES On Tuesday, September 16, 1986, GPUN met with the NRC staff to discuss their Cycle 6 Reload Report to be submitted by October 31, 1986. Enclosure 1 provides the list of attendees and Enclosure 2 contains the handouts provided at the meeting. The purpose of the meeting was to discuss the technical approach utilized by B&W and GPUN to identify any potential problem areas in the report.

% % 5 5 0 L M W D E f.D John Thoma, Project Manager PWR Project Directorate #6 Division of PWR Licensing-B

Enclosures:

As Stated cc w/ enclosures:

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MEETING

SUMMARY

DISTRIBUTION Licensee: GPU Nuclear Corporation -

  • Copies also sent to those people on service (cc) list for subject plant (s).

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. 0GC-MNBB 9604 EJordan BGrimes ACRS-10 NRC Participants TRoss NLauben CThomas DFieno I

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Enclosure 1 LIST OF ATTENDEES -

MEETING HELD ON SEPTEMBER 16, 1986 NAME AFFILIATION John Thoma NRC/PWR-B Thierry Ross NRC/PWR-B Norm Lauben NRC/PWR-B Cecil Thomas NRC/PWR-B Daniel Fieno NRC/PWR-B Rick McGoey GPUN Licensing Frank McPhatter B&W-Fuel Engineering Joe Randazzo TMI Licensing Scott Wilkerson TMI Nuclear Engineering Joe McCarthy GPUN TMI Fuel Projects John Luoma GPUN TMI Fuel Projects Dave Distel -

GPUN Licensing r --.. ,-- - -

TMI-1 CYCLE 6 RELOAD REPORT SUBMITTAL - GPUN/NRC PREMEETING

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SEPTEMBER 16, 1986 I. INTRODUCTION A. GPUN Organization B. Status of Cycle 5 C. Schedule for Cycle 6 Outage D. Status of Cycle 6 Reload Report II. CYCLE DESIGN A. 18-Month Cycle B. Cycle Design C. PTS / Fluence Reduction D. Safety Analysis and Technical Specifications III. DIFFERENCES FROM TMI-1 CYCLE 5 A. Use of Cross-Flow Thermal Hydraulic Code (LYNXT)

B. . Core Bypass Flow C. TACO II -

D. Use of Gray APSRs E. Removal of Power Level Cut-Off F. Startup Program  ;

G. NUREG-0630 l l

IV. OTHER )

V.

SUMMARY

l I. INTRODUCTION A. GPUN ORGANIZATION B. CYCLE 5 STATUS o ABOUT 260 EFPD o APSRs WITHDRAWN (9/13/86) o EXPECTED SHUTDOWN 11/1/86 (ABOUT 302 EFPD)

C. SCHEDULE FOR CYCLE 6 0UTAGE o START NOVEMBER 1sT o DURATION 4-TO-5 MONTHS o APPROVED TECH SPEC: MARCH 1sT I

D. STATUS OF CYCLE 6 RELOAD REPORT  !

l 0 DRAFT RR TO GPUN (9/15/86) o TECH SPEC CHANGE REQUEST TO NRC (10/31/86)

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(* GENERAL PUBLIC UTILITIES NUCLEAR CORPORATION i ~

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0FFICE OF THE PRESIDENT ['

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P. R. CumK .

VICE PRESIDENT & VICE PRESIDENT &

DIRECTOR DIRECTOR l TECHNICAL FUNCTIONS TMI-l H. D. HUKILL R. F. WILSON I

I i DIRECTOR SYSTEMS DIRECTOR LICENSING i PLANT ENGINEERING DIRECTOR ENGINEERING & REGULATORY AFFAIRS J. J. COLITZ i

! T. G. BROUGHTON J. R. THORPE

)

NUCLEAR ANALYSIS & FUELS MANAGER PWR LICENSING LEAD NUCLEAR ENGINEER DIRECTOR R. J. MC COEY W. S. WILKERSON G. R. BOND 1

1 1 ,

MANAGER TMI FUEL MANAGER SAFETY ANAL. PWR LICENSING PROJECTS & PLANT CONTROL ENGINEER J. D. LUOMA N. TRIK0UROS D. DISTEL l FUELS ENGINEER SAFETY ANALYSIS J. D. MC CARTHY ENGINEER L. LANESE ,

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Figure 3-1. Core Loading Diagram for THI-1, Cycle 6 7 7 6 7 7 A NO3 LO2 008 Ll4 .113 7 88 7 88 . 6 88 7 88 7 B LO1 F K01 F C11 F KIS F LIS 7 88 7 88 7 88 7 88 7 88 7 C HIS F N02 F M02 F M14 F N14 F RD8 7 88 6 8B 6 88 6 88 6 88 6 8B 7 i 0 C09 F E09 F G13 F A06 A10 F C07 F E07 F 88 7 88 6 8A 6 8B 6 8A 6 88 7 88 E F 804 F F B12 F H06 F 006 F 010 F- F08 7 7 88 6 8A 6 88 6 88 6 8A 6 88 7 7 F F H02 F G09 F B08 F G11 F A07 C04 C12 A09 F GOS 7 88 7 8B 6 8B 6 8A 6 8B 6 88 7 88 7 G F B06 B10 F B11 F F04 F F06 F F10 F F12 BOS F 6 6 88 6 88 6 8A 6 8A 6 88 6 88 6 6 H F G03 F C07 F 011 F K09 F K13 F M13 H12 H04 E03 88 7 88 6 88 6 8A 6 8B 6 88 7 8B 7 7

K LO4 F LO6 F L10 F L12 F POS F P06 PIO F P11 F 7 8B 6 8A 6 8B 6 88 6 8A 6 88 7 7 7

L F K05 F P08 F K07 F H14 F K11 F R07 004 012 R09 6 8A 6 BB 6 8A 6 88 7 8B 8B 7 88 M p p12 F N06 F N10 F H10 F PO4 F F LOB M 7 88 6 8B 6 88 6 88 6 88 6 BB 7 F K03 N07 F 007 F M09 F 009 F R06 RIO F

/ 88 7 88 7 88 7 88 7 8B 7 0 F 002 F E02 F E14 F 014 F H01 A08 7 8B 7 8B 6 88 7 8B. 7 P

F01 F G01 F 005 F GIS F FIS 7 7 6 7 7 003 F02 N08 F14 013 12 13 14 15 8 9 10 11 1 2 3 4 5 6 7 C Ba tch ,

===== Previous Cycle Location; F = Fresh Fuel Assembly 3-3 N&Miceps a McDermott compenn

,n ,---- ,- - - - , , , - - - - , -

- - - , ----.-m, -- - - - - , , ,

Figure 3-2. Enrichment and 8urnup Distribution for TMI-1, Cycle 6 8 9 10 11 12 13 14 15 2.85 2.95 2.85 2.85 2.85 2.85 2.85' 2.85 H 19,779 18,934 17,249 19,745 0 0 0 20.033 2.85 2.85 2.85 2.85 2.85 2.85 2.85 19,167 0 15,739 0 9,411 0 10,550

. 2.85 2.95 2.85 2.85 2.85 2.85 19,155 0 16,987 0 7,596 10,330 2.85 2.85 2.85 2.85 M

17,883 0 6,772 0 2.85 2.85 2.85 N

17,249 0 6,513 2.85 0

7,844 P

R X.XX Initial enrichment .

XX,XXX BOC burnup, mwd /mtU l Babcock & WHcom 3-4 , , ,, y s.

Figure 3-3. Control Rod Locations and Group '

Designations for TMI-1. Cycle 6 ,

Fuel Transfer Canal )

A 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 H W- 6 7 2 4 2 7 6 -Y K 5 4 2 2 4 5 L 1 8 6 2 6 8 1 il i 3 5 4 4 5 3 N l 7 8 7 8 7 O 3 5 5 3 l

P l l 1 6 1 R i i Z

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 X Group Number Group No. of Rods Function 1 8 Safety 2 8 Safety 3 8 Safety 4 9 Safety 5 12 Control 6 8 Control 7 8 Control ,

8 8 APSRs 3-5 NAMb8 a McDermott com

Figure 3-4. LBP Enrichment and Distribution for THI-1 Cycle 6 8 9 10 11 12 13 14 15 H 1.03 1.03 0.80 K 1.03 1.03 1.03 0.20 L 1.03 1.03 0.80 M 1.03 1.03 0.80 N 1.03 0.80 0.20 0 0.80 0.80 0.20 l

p 0.20 I

R l

" Concentration, No. of BPRAs wt % B 4C X.XX LEP Concentration (wt % B4 C in Al230) 20 0l80' 16 0.20 l

Total 3E _

l Babcock &WHcom

, 3-6 aucce m ic e r s l

II. CYCLE DESIGN A. 18 MONTH CYCLE o LOW LEAKAGE DESIGN o 425 +/- 15 EFPD o 76 FRESH FUEL ASSEMBLIES o 68 BPRAs B. CYCLE DESIGN o CORE MAP (FIGURES 3-1, 3-1) l o CONTROL ROD MAP (FIGURE 3-3) o BPRA MAP (FIGURE 3-4;)

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C. PTS / FLUENCE REDUCTION BACKGROUND o JANUARY 1986 BAW-1895 o TMI-1 MET PTS

" PTS EVALUATION IN CRITERIA AT ACCORDANCE WITH CRITICAL WELD 10CFR50.61 FOR B&WOG o ASSUMED LL CY 6,

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REACTOR PRESSURE VESSELS" 7; VLL CY 8 o MARCH 1986 BAW-1901 o SAME CYCLE SCHEME

" ANALYSIS OF CAPSULE ASSUMPTIONS AND THI-1C GPUN TMI-1 RV METHODS AS MATERIALS SURVEILLANCE BAW-1901 PROGRAM" o 100 PTS MARGIN CYCLE 6 l

o LOW-LEAKAGE DESIGN o ABOUT 30% PERCENT FLUENCE DECREASE o TWICE-BURNED ASSEMBLY o ADDITIONAL FLUENCE OR MAJOR AXIS (FIGURE REDUCTION AT 3-1 AND 3-2) CRITICAL WELD y - - = - . - . - - - - - . , , . - - - . -

D. SAFETY ANALYSIS AND TECHNICAL SPECIFICATIONS  :

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LIMITING SAFETY SETTINGS o CORE PROTECTION SAFETY LIMITS o FLUX / FLOW / IMBALANCE SETPOINTS LIMITING CONDITIONS FOR OPERATION o ROD POSITION LIMITS THREE BURNUP WINDOWS 2 PUMP /3 PUMP /4 PUMP CURVES

% RATED POWER VS % ALLOWABLE POWER o OPERATIONAL IMBALANCE LIMITS THREE BURNUP WINDOWS o LOCA LIMITED MAXIMUM LHR NUREG-0630 TACO 2 (DENSIFICATION PERIOD) ,

TACO 2 (REMAINDER OF CYCLE) o APSR TECHNICAL SPECIFICATIONS NONE REQUIRED FOR GRAY APSR o POWER LEVEL CUTOFF CYCLE SPECIFIC ANALYSIS

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III. DIFFERENCES FROM THI-1 CYCLE 5 A. CROSS-FLOW T-H CODE O PROVIDES ADDITIONAL DNBR MARGIN o MASS TRANSFER BETWEEN FLOW CELLS o USED FOR ANO-1 AND CR-3 o APPRdVED NRC CODE 1

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l B. CORE BYPASS FLOW o 2% DECREASE FROM CYCLE 5 BYPASS (8.4% COMPARED TO 10.4%)

o CONSERVATIVE VS. ACTUAL. BYPASS WITH LBPs INSERTED

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1 C. TACO 2 o STANDARD IN ALL B&W RELOAD FUEL DESIGNS o PROVIDES MECHANISTIC DENSIFICATION MODEL o USED FOR CURRENT LOCA LIMITS o EFFECTS SHOWN IN BOC ALLOWABLE PEAK LHRs l

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1 D. GRAY AXIAL POWER SHAPING RODS .

APSE DESIGN o 63 INCH INCONEL POISON o INCREASED CLAD THICKNESS o BETTER OVERALL QUALITY APSR BENEFIT i o REDUCED CORE PEAKING o LOWER KW/FT WITH MOVEMENT o IMPROVED FUEL RELIABILITY o LOWER FUEL ENRICHMENTS APSR TECHNICAL SPECIFICATIONS o NONE REQUIRED

. o MINOR PEAKING PENALTY APPLIED. TO OTHER CURVES -

PREVIOUS EXPERIENCE o SMUD (RANCHO SECO) o FPC (CRYSTAL RIVER) o DUKE (OCONEE)

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E. POWER LEVEL CUTOFF CYCLE 5 ANALYSIS o GENERIC XENON PENALTY IN ANALYSIS o TECHNICAL SPECIFICATION PEAKING ENSURED WITHIN GENERIC ASSUMPTIONS CYCLE 6 ANALYSIS -

o CYCLE SPECIFIC XENON PEAKING UTILIZED o PEAKING PENALTY APPLIED IN LCO CURVES PREVIOUS EXPERIENCE o DUKE (OCONEE) -

0 ARKANSAS POWER & LIGHT (ANO-1)

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I F. STARTUP TESTING .

ZERO POWER TESTING o CONTROL ROD TRIP TESTING o ALL RODS OUT CRITICAL BORON o ISOTHERMAL TEMPERATURE COEFFICIENT o CONTROL ROD WORTH o BORON WORTH POWER ESCALATION TESTING o CORE POWER DISTRIBUTION INTERMEDIATE POWER LEVEL (40% - 75%)

FULL POWER (100%)

o INCORE/EXCORE DETECTOR CORRELATION (0 INTERMEDIATE POWER)

REVISED SLOPE CRITERION o POWER COEFFICIENTS (O FULL POWER)

DOPPLER COEFFICIENT TEMPERATURE COEFFICIENT

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o O

G. NUREG-0630 o REVISED CLADDING RUPTURE / BALLOONING MODELS o INCLUDED IN CYCLE 6 LOCA LIMITS o PENALTIES AT BOC o EFFECTS INCLUDED IN OTHER TECH SPECS I

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