ML19347F023

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Slide Presentation Entitled, Oyster Creek Core Spray Sparger Replacement
ML19347F023
Person / Time
Site: Oyster Creek
Issue date: 05/14/1981
From:
JERSEY CENTRAL POWER & LIGHT CO.
To:
Shared Package
ML19347F021 List:
References
NUDOCS 8105150100
Download: ML19347F023 (37)
v • d • e


Text

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C MEETING AGENDA OYSTER CREEK CORE SPRAY SPARGER REPLACEMENT APRIL 15, 1981

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I.

INTRODUCTION JIM KNUBEL (JCP&L)

A','

HISTORY B'.'

MEETING OBJECTIVES II.

DESIGN

SUMMARY

JAY ERBES (G.E.)

A.

DESIGN CRITERIA B'.'

REPLACEMENT DESCRIPTION III.

STRUCTURAL DESIGN JIM CHARNLEY (G.E.)

A.

STATIC ANALYSIS B.

DYNAMIC ANALYSIS C.

DYNAMIC RESPONSE TESTING IV.

REACTOR PERFORMANCE JIM OATES (G.E.) -

A.'

NORMALOPERATION

~

B.

TRANSIENT AND ACCIDENT V.

CORE SPRAY PERFORMAMCE AND TESTING JIM OATES (G.E.)

A.

DESIGN REQUIREMENTS B.

CONCEPTUAL OVERVIEW C'.'

FLOW DISTRIBUTION

~ - - ~

D.

SPRAY DISTRIBUTION i

SUMMARY

AND FUTURE SCHEDULE JIM KNUSEL (JCPEL)

B 2 05 350 (VI.

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OYSTER CREEK CORE SPRAY SPARGER REPLACEMENT HISTORY 1 CRACK DISCOVERED BY VISUAL INSPECTION 1978 MULTIPLE CRACKS DISCOVERED BY IMPROVED 1980 VISUAL TECHNIQUES AND UT, JCP&L SUBMITTAL SUGGESTED SPARGER REPLACEMENT WITHIN 2 REFUELING CYCLES NRC SER REQUIRED REPLACEMENT WITHIN 1 CYCLE JCP&L AND NRC STAFF MEETING OCT 1980 JCP&L SUBMITTAL TO NRC MAR 1981 APR 1981 JCP8L AND NRC MEETING JK-1 4/15/81

0YSTER CREEK CORE SPRAY SPARGER REPLACEMENT

~

MEETING OBJECTIVES 1.

CONCURRENCE WITH DESIGN QUALIFICATION PROGRAM e-APPLICABLE CODES i

e ANALYTICAL SUPPORT e

TEST PROGRAM i

II.

ESTABLISH REQUIRED DOCUMENT SUBMITTALS o

PRELII:! NARY MODIFICATION REPORT (3/81) e FINAL MODIFICATION REPORT (10/81) i III.-

ESTABLISH SCHEDULE OF PRESENTATIONS e

CORE SPRAY TESTS RESULTS (9/81)

IV.

DISCUSS PRELIMINARY MODIFICATI0ll REPORT Y

JK-;l 4/15/81

OYSTER CREEK

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~0VERHEAD CORE SPRAY SPARGER l

DESIGN CRITERIA I.

SYSTEM e

2,45 GPM/ BUNDLE e

DUAL SYSTEMS - 100% REDUNDANCY-e i1Ih! MUM IMPACT ON EXISTING IllTERtlALS AND REACTOR OPERATI0tlS e

ONE SPRAY N0ZZLE PER 4 BUNDLES II.

APPLICABLE CODES s

ASME SECTION XI s

ASME SECTION III, Sil3SECTI0tl flG AS DESIGN GUIDE e

SAFETY ESSENTIAL, 10CFR21 APPLIES

III, MECHANICAL e

WATER SUPPLIED THROUGH EXISTING REACTOR PRESSURE VESSEL t!0ZZLES e

REMOVA3LE FOR REFUELING AND INSPECTI0tl e

MATERIAL - TYPE 316 (L) OR 304 (L) f.'02% MAX, CARBON JGE - 1 4/15/81

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JGE - 13 4/15/81

e 0YSTER CREEK CORE SPRAY SPARGER REPLACEMENT 4

STRUCTlJRAL DESIGN

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CORE SPRAY SPARGER AND CORE SPRAY LINE A.

STATIC ANALYSIS B'.

DYNAMIC ANALYSIS

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C.

DYNA!ilC FESPONSE TESTING e

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STATIC ANALYSIS

-A.

SIZING DRAG COEFFICIENT = 1 LIFT COEFFICIENT = 1

. DAMPING = 2%

EXCITATION FREQUENCY = NATURAL FREQUENCY

' PPLIED LOAD = 25 TIES HYDRAULIC LOAD A

ALTERNATING STRESS <10 KSI B'.

' DEAD WEIGHT C.

THERMAL' D.

SEISMIC

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SPARGER DYllAMIC Ai1ALYSIS

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MATHEllATICAL MODEL 1332 DEGREES OF FRF.EDOM LOWEST NATURAL FREQUEllCY = 42 HZ DAMPIllG = 1.5%

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~

-B'.'

H'YDRAULIC FORCE FLUCTUATING LIFT COEFFICIENT =

.2 CYLINDERS

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, PREDICTED VORTEX SHEDDING FREQUENCY

=.13HZ(3-1/2." PIPE 5)

= 10 HZ (5" PIPES)

= 11 HZ (1.5" BEAMS)

APPLIED FREQUEf1CY = 5, 10, 13, 15, 20, 25, 30, 35, 40 AtlD AT 5 LOWEST NATURAL FREQUENCIES

~

.'C.

CRITERIA ALTERNATIf1G STRESS 4 10 KSI JeZ-3 4/Elal

LINE DYNAMIC ANALYSIS f

A.

IMTHEMATICAL l'0 DEL 174 DEGREES OF FREEDOM LOWEST NATURAL FREQUENCY = 114 HZ DAMPING = I4 %

B.

HYDPAULIC FORCE FLUCTUATING LIFT COEFFICIENT =.2 APPLIED SIMULTANEOUSLY TO ALL NODES IN PHASE PREDICTED VORTEX SHEDDING FREQUENCY = 7 Ilf APPLIED FREQUENCY = 10, 20, 30, 40, 50, 60, 70, 80 AND AT 5 LOWEST NATURAL FREQUENCIES C.

CRITERIA

' ALTERNATIllG STRESS < 10 KSI e

1 Jsc-4 4/6/81

DYNAMIC RESPONSE TESTING

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SPARGER

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SHOP TEST TO VERIFY NATURAL FREQUENCIES AND l'0DE SHAPES FROM MATHEMATICAL MODEL B'.

LINE

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REACTOR PERFORMAllCE NORMAL OPERATION o

SEPARATOR / DRYER PERFORMANCE N0 PERFORMANCE DEGRADATION DUE TO REDUCED SEPARATOR / DRYER SPACING SPARGER HEADER COULD IMPACT PERFORMANCE OF PERIPHERAL SEPARATORS (18 0F 151 TOTAU TOTAL BLOCKAGE RESULTS Iti:

(

1,7 PSI PRESSURE DROP INCREASE o

CARRYUllDER WITHIN DESIGN LIMITS o

CARRYOVER WITHIN DESIGN LIfilTS o

N0 IMPACT ON PLAtlT PERFORMANCE o

SHROUD LEAKAGE STEAM SKIRT PREVENTS STEAM LEAKAGE TO ANilVLUS CONSERVATIVE ANALYSIS SHOWS SKIRT REMOVAL:

<0.03% CARRYUt! DER INCREASE o

NO RECIRC SYSTEM PERFORMANCE DEGRADATI0tl o

<0.4 BTU /LB CORE INLET EtiTHALPY INCREASE o

CYCLE SHORTEilED BY ONE-HALF FULL POWER DAY INCONSEQUENTIAL EFFECT ON NORMAL PLANT OPERATION JH0 - 1 4/15/81

i REACTOR PERFOR..ANCE NORMAL OPERATION (CONTINUED) o RECIRCULATION SYSTEM PERFORMANCE SPARGER INCREASES AP <0.8 est SUBSTANTlAL EXCESS FLOW CAPABILITY EXISTS NO RECIRCULATION SYSTEM PERFORMANCE CONCERN -

EVEN CONSIDERING BLOCKED SEPARATORS i

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4/15/81 v

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REACTOR PERFORMANCE TRANSIENT / ACCIDENT CONDITIONS

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o CORE HYDRAULIC STABILl!Y

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CONSERVATIVELY MODELED DECAY RATIO INCREASES

  • 0,04 NO IMPACT BECAUSE DECAY RATIO CONSIDERING OVERHEAD CORE SPRAY SfARGER IS SIGNIFICANTLY LESS THAN 3.0 o

ANTICIPATED OPERATIONAL TRANSIENTS PEAK VESSEL PRESSURE INCREASES < l est PEAK HEAT FLUX INCREASES < 0.5% FOR PRESSURIZATION EVENTS CHANGES TOO SIALL TO AFFECT RELOAD LICENSE ANALYSIS 4

o INTERNAL PRESSURE DIFFERENCES SHROUD STEADY STATE HYDRAULIC LOADS INCREASE DUE TO HIGHER aP INCONSEQUENTIAL DYNAMIC LOAD INCREASE SUBSTANTIAL MARGIN TO DESIGN LIMITS ACCOMODATES HIGHER AP JHO - 3 4/15/81 I

P Q

REACTOR PERFORMAilCE

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TRAllSIErlT/ACCIDEllT C0flDITI0flS (CONTINUED) o LOSS OF COOLA!!T ACCIDEllTS NO EFFECT ON CURRENT LOCA AtlALYSES WITH REQUIRED CORE SPRAY FLOW / BUNDLE GRID REMOVED DURING REFUELING o

ZER0 LOCA POTEllTIAL MAINTEllANCE ISSUE:

o ONE SYSTEM SUFFICIENT TO FLOOD BYPASS.

REGION a SPILL OVER INTO CHANNELS o

UTILIZE ADMIf1ISTRATIVE PROCEDURES TO PREVEilT lilADVERTENT DRAlillilG NO REDUCTI0ft IN SAFETY MARGIflS JHO - 4

~4/15/81

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5 CORE SPRAY PERFORMANCE AND TESTING Y

o DESIGN REQUIREMENTS o

CONCEPTUAL OVERVIEW o

FLOW DISTRIBUTION o

SPRAY DISTRIBUTION I

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JHO - 5 ll/15/81

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,O CORE SPRAY PERFORMAllCE AtlD TESTING DESIGN REQUIREMEllTS o'

ORIGINAL DESIGN BUNDLE FLOW:

2.45 GPM SPARGER FLOW:

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3400 GPM a 125 PSIA VESSEL o

OVERHEAD CORE SPRAY SPARGER ORIGINAL DESIG!1 REQUIREMENTS PLUS VESSEL ENVIRONMENTAL RANGE:

15 PSIA AIR, 15 TO 125 PSIA STEAM t

e JHO - 6 4/15/81

~

CORE SPRAY PERFORMAi1CE AllD TESTING:

CONCEPTUAL OVERVIEW o

BUNDLE FLOW AVAILABLE 3400

^: 6 GPM/BUilDLE (GROSS) 560 a 4.'5 GPM/ BUNDLE (NET)

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o APPR0X. 2 GPM/ BUNDLE EXCESS o

11AXIMUM MARGIN DESIGN OBJECTIVE DIRECT BUNDLE INJECTION DIRECT SPRAY TO 4 BUNDLES o

REDUf1 DANT SYSTEMS

> 4 BUNDLE SPRAY JH0 - 7 4/15/81 l

CORE SPRAY PERFORMANCE AtlD TESTING FLOW DISTRIBUTION o

PER SPARGER ARM o

PER SPRAY N0ZZLE o

EASY TO ACHIEVE UNIFORMITY o

SPARGER PRESSURE LOSSES ARE IMPORTANT, SYSTEM CAPACITY o

OVERHEAD DESIGN STRAIGHTFORWARD.

JHO - 8 1

11/15/81 P00ROR'8lNAL

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SELECTED N0ZZLE - STEAM TESTS MULTIPLE N0ZZLE INTERACTION SINGLE SYSTEM DUAL SYSTEMS LOCATION SENSITIVITY FLOW SENSITIVITY

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