ML20009D458

Summary of 810615 Meeting W/Util Re Mechanical Design Aspects,Including Fatigue Analysis,Of Discharge Piping from Safety & Relief Valves.W/List of Attendees & Viewgraphs

ML20009D458
Person / Time
Site:	Fermi
Issue date:	07/21/1981
From:	Kintner L Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8107240079
Download: ML20009D458 (15)

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dW \\1h -Q' Docket No.: 50-341 9

APPLICANT: Detroit Edison Company _

FACILITY:

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SUBJECT:

SUPfMRY OF JUNE '15,,1981 MEETIN.G REGA.RDING OPERATING.LICETS REVIEW The purpose of the meeting was to h. ear. and. discuss.information regarding mechanical design aspects, including fatigue analysis, of. discharge. pip.ing from r,afety and relief valves. Enclosure 1 is. a list of attendees. Enclosure 2 is a copy of slides used in the meeting..

Applicant agreed, after the meeting, to pr.ov,1,de results of an augmented ASME

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Code Class 2 fatigue analysis to demonstrate ade.quacy of piping to accorinodate the design number of transient cycles.during the plant lifetime.without unacceptable consequences of a. leakage crack,in..the wetwell airspace.

• 0riginal Signed By:

Lester L. Kintner L. L. Kintner, Project Manager Licensing Branch No. 1 Division of Licensing

Enclosures:

As stated cc: See next page s

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NRC FORM 318 610 80) NRCM O240 OFFICIAL RECORD COPY

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JUL 211981 MEETIhG

SUMMARY

DISTRIBUTION G. Lear 1 Docket Eile

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W. Johnston NRC PDR S. Pawlicki Local PDR TIC /NSIC/ Tera V. Benaroya Z. Rosztoczy N. Hughes LB#1 Reading W. Haass D. Muller H. Denton R. Ballard E. Case D. Eisenhut W. Regan R. Purple D. Ross B. J. Youngblood P. Check A. Schwencer F. Congel F. Miraglia

0. Parr J. Miller F. Rosa G. Lainas W. Butler R. Vollmer W. Kreger J. P. Knight R. Houston R. Bosnak F. Schauer L. Rubenstein R. E. Jackson T. Speis Project Manager L. Kintner M. Srinivasan Attorney, OELD J. Stolz M. Rushbrook S. Hanauer OIE (3)

W. Gammill ACRS (16)

T. Murley R. Tedesco F. Schroeder I

D. Skovholt M. Ernst NRC

Participants:

R. Baer C. Berlinger L. Kintner, R. Bosnak, D. Tet ao, K-h J. Brammer, B. Siegel A. Thadani D. Tondi J, Kramer D, Vassallo P, Collins D. Ziemann bcc: Applicant & Service List

Mr. Harry Tauber Vice President Engineering & Construction Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 cc:

Eugene B. Thomas, Jr., Esq.

LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, N. W.

Washington, D. C.

20036 Peter A. Marquardt, Esq.

Co-Counsel The Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 Mr. William J. Farner Project Manager - Fermi 2 The Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 Mr. Larry E. Schuerman Detroit Edison Company 3331 West Big Beaver Road Troy, Michigan 48084 David E. Howell, Esq.

3229 Woodward Avenue Berkley, Michigan 48072 Mr. Bruce Little U. S. Nuclear Regulatory Commission Resident Inspector's Office 6450 W. Dixie Highway Newport, Michigan 48166 Dr. Wayne Jens Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 l

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ENCLOSURE 1 June 15, 1981 - Meeting NAME ORGANIZATION L. Kintner NRC/NRR/DL/LB#1 R. Bosnak NRC/NRR/MEB D. Terao NRC/NRR/MEB J. Brammer NRC/NRR/MEB B. Siegel NRC/NRR/DL N. W. Edwards NUTECH D. Denver Energy Inc.

D. Flehnert DECO L. E. Schuerman DECO L. S. Gifford GE

6/15/81 OSURE 2 PAGE 1-ENR1CO FERMI yi SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS INTRODUCTION _

e NUREG-0661-REQUIREMENTS EXTENDED ASME CLASS 2 REQUIREMENTS e

e' TYPICAL ' INE EVALUATION e

DECO COMMITMENTS e

ADDITIONAL ASSURANCES t

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.6/15/81 PAGE 2 v ENRICO FERMI II SRV LINE WETWELL AIRSPACE FATIGUE CONCERNE NUREG-0661 REQUIREMENTS 9

REQUIRES PIPING EVALUATION IN ACCORDANCE WITH ASME CLASS 2 RULES

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9 ' REQUIRES APSOLUTE SUMMATION OF ALL DYNAMIC LOADS UNLESS ADDITIONAL JUSTIFICATION PROVIDED G

REQUIRES ALL COMBINATIONS MEET LEVEL B CONDIYIONS

- SOME\\ INCREASED STRESS LIMITS FOR MECHANICAL LOADS ALLOWED

- THERMAb EXPANSION STRESS EVALUATION REQUIRED FOR ALL LOAD COMBINATIONS 1

- FATIGUE dVALUATION REQUIRED FOR ALL LOAD COMBINATIbNSEXCEPTTHOSEINCLUDINGPOOL SWELL LOADS

b/.t o/ 01 P. AGE 3 -

ENRICO FERMI II SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS NUREG-0661 REQUIREMENTS (CONTINUEDi 8

ASME CLASS 2 FATIGUE REQUIREMENTS REQUIRED FOR THERMAL EXP NSION STRESSES ONLY NOT EXPLICITLY EVALUATED FOR DYNAMIC MECHANICAL LOADS PROVIDED BY DEFINING A STRESS RANGE REDUCTION FACTOR "F" W

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4 EA55'4 V ENRICO FERiil II 5

SRV LINE WETWELL AIRSPACE FATIGUE CONCERNL NUREG-0661 REQUIREMENTS (CONCLUDED)

STRESS RANGE REDUCTION FACTORS 1.0 7L 0.9 g 0.8 E6 7

1 0.

5 l

0. 5 0.4 E 0.3 h 0.2 h 0.1 0.

7000 14000 22000 45,000 100,000 NUMBER OF EQUIVALENT FULL TEMPERATURE CYCLES (N)

E NUMBEF, OF EQUIVALENT FULL TEMPERATURE CYCLES N

f 7,000 AND LESS 1.0 7,000 TO 14,000 0.9 14,000 TO 22,000 0.8 22,000 TO 45,000 0.7 45,000 TO 100,000 0.6 100,000 AND OVER-0.5

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ENRICO FERMI I1 s

SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS NUREG-0661 REQUIREMENTS (CONTINUED) e ASME CLASS 2 PIPING STRESS EVALUATION EQUATIONS EQUATION (8) - SUSTAINED LOADS

^

S

=

+

1.0Sh.: DESIGN CONDITION SL f-4t Z

- -EQUATION (9) - OCCASIONAL LOADS 1.2Sh:

LEVEL A AND B MAX 0 A+"B S

=

+

0.751 5 41.8Sh:

LEVEL C OL 4t-Z 2.4Sh:

LEVLL D EQUATION (10), (10A) AND (11) - THERMAL EXPANSION S

I LEVEL A AND B E

a Z

S

=

D 5

3.0S :

LEVEL A AND B c

Z S

+

+

1

+

^ ^"

TE a

h 4t n

(1)g f(1.25S

+ 0.25Sh)

=

a c

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PhGb'b^v' ENRIC0 FERMI II SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS EXTENDED ASME CLASS 2 REQUIREMENTS S

ASME CLASS 2 RULES EXTENDED TO EVALUATE FATIGUE DUE TO DYNAMIC MECHANICAL LOADS

- APPLY MODIFIED EQUATION (1 ) FOR EACH CYCLIC LOADING iM 3

f

=

(1.25S

+0.255) c

- DETERMINE ALLOWABLE NUMBER OF CYCLES. (N)) FOR EACH CYCLIC LOADING FOR STRESS RANGE REDUCTION FACTOR (f )

3

- APPLY CUMULATIVE DAMAGE CONCEPT TO EVALUATE FATIGUE DUE TO ALL CYCLIC LOADINGS t

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N N

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- PROCEDURE:

1) COMPUTE:

iM) f.

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Appropriate Level B Allowable

2) DETERMINE N CORRESPONDING TO THIS VALUE OF f j

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3) COMPUTE CUMULATIVE USAGE FACTOR

T 6/15/81 PAGE 7 ENRICU FERMI II SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS TYPICAL LINE EVALUATION e*

ISOMuTRIC OF PIPING IN VENT LINE AND TORUS.-

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U/LD/PL PAGE 8

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ENRICO FERMI II

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SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS TYPICAL LINE EVALUATION (1 (CONTINUEDF e

9 ASME CLASS 2 REQUIREMENTS 4

- = EQUATION (8)

PRESSURE PLUS DEADWEIGHT 2.7 KSI 15.0 KSI EQUATION (9) - PRESSURE, DEADWEIGHT PLUS SRV DISCHARGE 6'5 KSI 18.0 KS1 EQUATION (10) - SRV DISCHARGE THERMAL EXPANSION 15.4 KSI fC22.5) KSI i

(1) INCLUDES EVALUATION FOR DEADWEIGHT, PRESSURE, SRV DISCHARGE l

THRUST AND THERMAL EXPANSION LOADING CONDITIONS r

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Ot: Dick FAGE 9 ENRICO FERMI II SRV LINE WETHELL AIRSPACE FATIGUE CONCERNS TYPICAL LINE EVALUATION (CONTINUED) 8 EXTENDED ASME CLASS 2 REQUIREMENTS

- ASSUME EACH SRV ACTUATION PRODUCES ONE SIGNIFICANT THERMAL AND PR5SSURE CYCLES AND THREE SIGNIFICANT MECHANICAL CYCLES

- USING METHOD AND STRESSES PREVIOUSLY DISCUSSED, NUMBER OF ALLOWABLE SRV ACTUATIONS IS DERIVED AS FOLLOWS:

Ny = NUMBER OF ALLOWABLE THERMAL CYCLES

= 45,000 CYCLES N2 = NUMBER OF ALLOWABLE MECHANI CAL CY' LES

= 100,000 CYCLES "1

"2 3

"1 "2

"1 3n y l

45,000 100,000 1

19,100 ACTUATIONS n

=

l l

l (PROVISIONS FOR LOCA AND SEISMIC CYCLES WOULD REDUCE ACTUAL NUMBER OF ALLOWABLE ACTUATIONS)

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, P AGE,10 ENRICO FEkMI 11 SRV LINE WETWELL AIRSPACE FATIGUE CCNCERNS TYPICAL LINE EVALUATION (CONCLUDED) 9 EXTENDED ASME CLASS 2 REQUIREMENTS (CONCLUDED)

' - APPLYING ASME CLASS 1 REQUIREMENTS YIELDS 16,200 ALLOWABLE SRV ACTUATIONS e

CONCLUSION

- EXTENDED ASME CLASS 2 AND ASME CLASS 1 FAT'GUE CRITERIA RESULTS IN A SIMILAR NUMBER OF ALLOWABLE ACTUATIONS FOR THIS EXAMPLE.

THUS, PLAN TO PURSUE THIS EXTENDED CLASS 2 ANALYSIS -- IF RESULTS ARE TOO CONSERVATIVE, CLASS 1 RULES WILL BE UTILIZED.

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Olip/nl PAGE 11 ENRICO FERMI II SRV LINE WETWELL AIRSPACE FATIGUE CONCERNS i

DECO COMMITMENTS 1

e DETERMINE ALLOWABLE NUMBER OF SRV ACTUATIONS As PART OF PUA USING EXTENDED A,SME CLASS 2 REQtlIREMENTS 8

MONITOR ACTUAL NUMBER OF SRV ACTUATIONS e

WHEN ACTUAL NUMBER OF ACTUATIONS APPROACHES THE ALLOWABLE NUMBER OF ACTUATIONS, CONSIDER:

TNCREASED ISI ROTATE VALVE SET POINTS REPLACE PIPING OTHER ALTERNATIVES 4

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