ML17095A502

Notification of 860220 Meeting W/Licensee in Bethesda,Md to Discuss Seismic Structural Issues Re Proposed Spent Fuel Pool Reracking & Structure

ML17095A502
Person / Time
Site:	Diablo Canyon
Issue date:	02/11/1986
From:	Schierling H Office of Nuclear Reactor Regulation
To:	Varga S Office of Nuclear Reactor Regulation
References
NUDOCS 8602280499
Download: ML17095A502 (74)

Text

February ll, 1986 Docket Nos. 50-275 and 50-323 MEMORANDUM FOR:

Steven A. Varga, Director PWR Project Directorate P3 Division of PWR Licensing-A FROM:

SUBJECT:

DATE 5 TIME:

LOCATION:

PURPOSE:

PARTICIPANTS

'ans Schierling, Senior Project Manager PWR Project Directorate 83 Division of PWR Licensing-A DIABLO CANYON - MEETING WITH PACIFIC GAS AND ELECTRIC CO.

ON SPENT FUEL POOL RERACKING February 20, 1986 9:00 a.m. - 5:00 p.m.

Room 6507 Maryland National Bank Building Old Georgetown Road

Bethesda, Maryland Discussion of seismic structural issues regarding the proposed spent fuel pool reracking and structure for Diablo Canyon Units 1 and 2.

NRC:

K. Schierling, R. Ballard, D. Jeng, F. Rinaldi, C. Herrick (Consultant)

PGItE:

M. Tressler, D. Ogden, B. Lew, K. Singh (J.

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's/ HSchierling Kans Schierling, Senior Project Manager PWR Project Directorate P3 Division of PWR Licensing-A PAD-3 HSchie i g/pws 02/ 4/86 I

seom804m 8S02it PDR ADOCK 05000275 t

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PDR

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Pacific Gas and Electric Company Diablo Canyon

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c:hilip A. Crane, Jr.,

Esq.

Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Mr. Malcolm H. Furbush Vice President - General Counsel Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Janice E. Kerr, Esq.

California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederi ck Ei ss1 er, President Scenic Shoreline Preservation Conference, Inc.

4623 More Mesa Drive Santa

Barbara, California 93105 Ms.

El izabeth Apfelberg 1415 Cozadero San Luis Obispo, California 93401 Mr. Gordon A. Silver Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Harry M. Willis, Esq.

Seymour 8 Willis 601 California Street, Suite 2100 San Francisco, California 94108 Mr. Richard Hubbard MHB Technical Associates Suite K

1725 Hamilton Avenue San Jose, California 95125 Mr. John Marrs, Managing Editor San Luis Obis o Count Tele ram Tribune o nson venue P.

0.

Box 112 San Luis Obispo, California 93406 Resident Inspector/Diablo Canyon NPS c/o US Nuclear Regulatory Commission P. 0.

Box 369 Avila Beach, California 93424 Ms.

Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Joel

Reynolds, Esq.

John R. Phillips, Esq.

Center for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenburg Editor 5 Co-Publisher South County Publishing Company P. 0.

Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.

Norton, Burke, Berry 5 French, P.C.

202 E. Osborn Road P. 0.

Box 10569 Phoenix, Arizona 85064 Mr.

W.

C. Gangloff Westinghouse Electric Corporation P. 0.

Box 355 Pittsburgh, Pennsylvania 15230 David F. Fleischaker, Esq.

P. 0.

Box 1178 Oklahoma City, Oklahoma 73101

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Pacific Gas 5 Electric Company Diablo Canyon CC:

Arthur C. Gehr, Esq.

Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas 5 Electric Company 1726 M Street, N.W.

Suite 1100 Washington, DC 20036-4502 Regional Administrator, Region V

U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Michael J. Strumwasser, Esq.

Special Counsel to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, California 90010 Mr. Tom Harris Sacramento Bee 21st and 0 Streets Sacramento,,California 95814 Mr. H. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, California 95814 Lewis Shollenberger, Esq.

US Nuclear Regulatory Commission Region V

1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mr. Thomas Devine Government Accountability Project Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009

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Pacific Gas 5 Electric Company 3

Diablo Canyon CC:

Chairman San Luis Obispo County Board of Supervisors Room 220 County Courthouse Annex San Luis Obispo, California 93401 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 President California Public Utilities Commission California State Building 350 McAllister Street San Francisco, California 94102 Mr. Joseph

0. Ward, Chief Radiological Health Branch State Department of Health Services 714 P Street, Office Building ¹8 Sacramento, California 95814

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MEETING NOTICE DISTRIBUTION OPERATING REACTORS BRANCH NO.

1 DIVISION OF LICENSING Docket 'e Central File L PDR PADj<3 Rdg ORAS H. Denton

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Vargy

. Schierling.

OELD E. L. Jordan B. Grimes Receptionist ACRS (10)

Resident Inspector Regional Administrator N. Olson C. Vogan NRC Par ticipants R. Ballard D. Jeng F. Rinaldi C. Herrick (Consultant)

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UNlTEDSTATES NUCLEAR REGULATORY COMMISSION ENCLOSURE l WASHINGTON, D. C. 20555 FEB 11 1386 Docket Nos.- 50-2?5 and 50-523

. MEMORANDUM FOR:

Steven A. Varga, Director PWR Proiect Directorate 83 Division of PWR Licensing-A FROM:

SUBJECT'ATE E( TIME:

LOCATION'URPOSE:

PARTICIPANTS:

Hans Schierling, Senior Project Manager PWR Project Directorate P3 Division of PWR Licensing-A DIABLO CANYON - MEETING WITH PACIFIC GAS AND ELECTRIC CO.

ON SPENT FUEL POOL RERACKING February 20, 1986 9:00 a.m. - 5:00 p.m.

Poom 6507 Mlaryland National Bank Building Old Georgetown Road

Bethesda, Maryland Discussion of seismic structural issues regarding the proposed spent fuel pool reracking and structure for Diablo Canyon Units 1 and 2.

NRC:

H. Schierling, R. Ballard, P. Jeng, F. Rinaldi, C. Herrick (Consultant)

POSE:

Ii. Tressier, O. Ogden,

g. LeM, K. Singa (J. Oat Co.

, et al.

ans Schierling, Sen r Project Manager

,PWR Project Directorate P3 Division of PWR Licensing-A

ENCLOSURE 2

ATTENDEES NRC/PG&E MEETING DIABLO CANYON UNITS 1 AND 2 RERACKING OF SPENT FUEL POOLS FEBRUARY 20, 1986 BETHESDA, MARYLAND B.

Lew R. Anderson K. Singh D. Ovadia S. Bahattacharya R. Herrick R. Ballard D. Jeng F. Rinaldi H. Polk D. Ogden J.

McGurren S.

Johnson R. Locke G. Sarkisian H. Schierling PG&E PG&E J.

Oat Company Bechtel PG&E Franklin Research Center (NRC Consultant)

NRC -

PWRA NRC -

PWRA NRC -

PWRA NRC -

NRR PG&E NRC - OELD Bechtel PG&E PG&E NRC -

PWRA

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ENCLOSURE 3 PGE(E VIEWGRAPHS USED AT MEETING ON FEBRUARY 20, 1986

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25 ussr I umber 8 EL B5 COP/TAN/NBA/

STAVED'TUAcF EL 85 TURGIME t3C/HALO/NR EL CSS 748 I 18/

FKAA'T LAYOFFS /NO THE FOU)VOATI&/ELEUATIOhfS hfQZF'ACL ELEVAT/ONS Ag5 AT ~OP'fAT Af'PEQXIMAFELY.

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6d) 58'-V" cZ'6 UNIT I

, SPAN FM'L POOL

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g coarw@ru&tr 87k'CC'TURZ IIJ FIG.Z PLAN VIEN EL /OO'-uv/7- /

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SECTION B

TYPICAL DETAILS

%ALL

. LINER PLATE FIGURE 6

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V VV V

fo-RE,LOCA TEO a~~ceer A

OLD BRACKET A

1o--9" LAN SPENT VGL POOL UhllT < g PoaL LINER VN/7+Z POOL SVMETRIC4L AaauT 78I5 uPIE ZZ. I~S'- S" QB eL. f99-9 PAL LlhfER ExiST; 9/8 SPENT FVE'L A5SEhfBLt'OOL ERACKE7

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SI GNIFICANT DES I GN FEATURES POOL STRUCTURE IS SUPPORTED ON BED ROCK FOUNDATIN SLAB 5'HICK MALLS, IN GENERAL, O'HICK STAINLESS STEEl LINER IS PROVIDED FOR LEAKTHIGclTNESS EACH WELD SEN IS PROVIDED WITH A LEAK CHASE.

ALL LEAK CHASE LEAD TO A COLLECTION

POINT,

DESIGN INFOfNATION LOADS AtlD LOAD CONBINATIONS FM SECTION 3.8.2.3 ACCEPTANCE CRITERIA FSAR SECTION 3.8,2,5 9ESIGN AND ANALYSIS PROCEDURE FSAR SECTION 3,8,2,0

Draft 7 The spent fuel pool structural analysis, addressed in the FSAR. is affected by the high density fuel racks due to the following:

o Height of the proposed high-density racks o

Thermal gradient across the walls o

Interaction between the racks and the pool structure The effect of these items is addressed in the response to Question 15 below.

~R There are no. physical changes to the spent fuel pool concrete structure addressed in the FSAR analysis.

However, minor modifications to the liner plate will be made to accommodate the high-density racks.

The modifications include relocation of spent fuel handling tool brackets to the east end of the north and south walls of Units 1 and 2,.respectively.

Figure 7 shows typical details of the modified brackets.

n 1

As described in the FSAR, Section 3.7.2.1.7.1, the seismic inertia loads were obtained using a time-history analysis of a spring and lumped mass model of the auxiliary building.

Two horizontal models and a vertical model, shown in Figure 8, were used in the analysis.

A detailed analytical static model of the auxiliary building (Figure 9) was used to distribute seismic inertia forces and moments to various walls, diaphragms, and columns, as described in the FSAR, Section 3.8.2.4.

The effect of the change in weight on the seismic models due to the high-density racks was insignificant, since increase in global mass was determin'ed to be less than 1'1.

Therefore, there is no change in the seismic responses and forces reported in the FSAR.

The pool walls were analyzed for local out-of-plane effects due to hydrostatic, hydrodynamic, and seismic loads using U.S.

Bureau of Reclamation tables for.plates (Ref. 1).

Hydrodynamic effects were determined based on the methods in TID 7024, "Nuclear Reactors and Earthquakes" (Ref. 2),

and "Dynamics of Fixed-Base Liquid-Storage Tanks" (Ref. 5).

Thermal effects in the pool elements due to the increased thermal gradient generated from the use of the high-density racks were analyzed considering cracked concrete section.

The liner has been evaluated for loads and load combinations described in

Response

15c.

The mathematical model used in the thermal evaluation consists of a set of springs representing the axial stiffness of the liner and flexural stiffness of the embedded

anchors, as shown in Figure 10.

0670S/

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SE'I SHI C ANALYSIS

INCREASE IN HEIGHT 9UE TO HI CH LENS I TY PACKS 6LOBAL TOTAL NASS 200,900KIPS

> D D I T I 0 N A L

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lo INCREASE 2

g 000 K I P

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LEGEND:

2 NODE NUMBER Ql ELEMENT NUMBER ROTATIONALDEGREE OF FREEDOM TRANSLATIGNALDEGREE OF FREEDOM MASS POINT 18 I'5.8').5' L.

140'5.0'.

EL.)ae'l CSI Qs RIGID LINKTYP. 115'z TORSIONAL SOIL SPRING~

Q2 RIGID LINKTYP.

3 Qz 27.5'RL3mtL

'17.7'~L.5'~ SEE NOTE TRANS-LATIONALL SQIL SPRING N-S MGQI":liL E-N MODE(

VEHTICAILMODEL

( QOSGRI ONLY )

FAN ROOM ROOF AT ELE V. I 64 I

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DIABLO CANYON PONPI P-ANT UNITS I B 2 5" DIMENSION"L MACRO STATIC MODEL

Table 1

AUXILIARYBUILDING SPENT FUEL POOL CONCRETE HALLS STRESS RATIOS h

i n(a)

~l~f

~m~n g~~{(b)

Qpm~n

/~~i(b)

Stress

~Ra i (c)

A.

DESIGN EARTHQUAKE HALL AD HALL BC HALL CD HALL AB

~l 85 100 100 100 Z5 85 80 80 K9 220 155 250 240 141 164 20 54

~4 664 113 146 145 g,4 2.6 3.4 2.7 2.7

,B.

DOUBLE DESIGN EARTHQUAKE HALL AD HALL BC HALL CD HALL'B

~l 85 100 100 100

~4 170 160 160

~4 370 260 420 410 105 106 280 268

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<@7 316 1,086 40 244 g.g 2.2 3.0 2.6 2.5 C.

HOSGRI EARTHQUAKE HALL AD HALL BC HALL CD HALL AB 85 100 100 100

~l 230 130 330 270

~l 320 190 480 460

~4 493 60 220 199 R5Q 979 197 339 324 1.5 1.4 1.6 (a)

For wall identification, see Figure 3.

Counterparts in Unit 2 are similar.

(b)

Axial demand effect is included in the capacities.

(C)

Stress ratio capacity/demand for shear or moment, whichever is smaller.

OTHER LOADS CONSIDERED HYDROSTATIC OUT OF PLANE SEIS,"lIC DUE TO POOL MATER SELF HEIGHT SEISj'lI C THERNL EFFECT

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Table 2

AUXILIARYBUILDING SPENT FUEL POOL CONCRETE STRUCTURE STRESS RATIOS (DE)(a)

~>>(b)

AB BC AD m n V

1 Homent

~f1~/f 195 220 225 Shear

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31 35 42 V

1 Homent Shear

~f1~/f ~/f~

220 245 245 Stress

~R~i ED GF Basemat 145 180 215 210 20

'7 27 smalY 220 250 260 275 56 65 46 large 1.5 1.4 1.2 1.3 (a)

Stress ratio capacity/demand for shear or moment, whichever is smaller.

(b)

For wall identification, see Figure 3.

Table 3

AUXILIARYBUILDING SPENT FUEL POOL CONCRETE STRUCTURE STRESS RATIOS (DDE)(a)

~11(b)

AB m n V

1 Homent 265 Shear

~/f 38 Homent

~f~/

420 V

1 Shear Stress R&.h 1.6 BC AD ED GF Basemat 295 305 195 235 285 265

~ 42 25 30 32 small 460 460 420 470 490 520 99 71 large 1.6 1.5 2.2 2.0 1.7 2.0 (a)

Stress ratio capacity/demand for shear or moment, whichever is smaller.

(b)

For wall identification, see Figure 3.

Table 4

AUXILIARYBUILDING SPENT FUEL POOL CONCRETE STRUCTURE STRESS RATIOS (HE)(a)

~>>(b)

AB mand V

1 Homent 300 Shear 45 Homen Shear 500 92 Stress 1.7 BC AD ED GF Basemat 355 365 200 245 295 345 68 31 34 37 small 550 550 500 570 590 630 92 92 92 107 76 large 1.5 1.4 2.5 2.3 2.0 1.8 (a)

Stress ratio capacity/demand for shear or moment, whichever is smaller.

(b)

For wall identification, see Figure 3.

LINER DESISN LINER DETAILS ARE SINILAR TO OTHER PLANTS LICENSED TENPERATURE EFFECT ON LINER IS EVALUATED.

IT NEETS THE ACCEPTANCE CRITERIA OF ASME SEC, III DIVISION 2,

PAHEL A AHCHOR PAHEL 5 SCRAP S ANCHOR I'

~AHCHOR DlSPLACQ4P4T KC~l04CHOR STIFFHESS K~P~STlFFKESS OF UHER PAHEL KRP STlFFHESS OF LlHER PAHEL B SPENT Fust opt L~VFF', MOOEL FOR THFF,'WAt aLY5is FlGuRE fo

Table 5

AUXILIARYBUILDING SPENT FUEL POOL LINER STRAINS AND DISPLACEHENTS Floor D+Ta+HE LINER PLATE STRAINS Liner Governing

~~i)n

~~~m Hall D+Ta+HE

/pm'.00112 0.00156

~ll w~l(l) 0.005 0.005 4.5 3.2 LINER ANCHOR DISPLACEHENTS Liner

~~in Hall Floor Governing

~i~d~m D+Ta+HE D+Ta+HE

~mi~n

~ll w~l(3) 0.01220 0.06200 0.01375 0.06200 5.2 4.5 (1)

From ASHE BhPV Code Section III, Division 2, 1983 Edition, Table CC-3720-1.

(2)

Safety factor is computed relative to the code allo~able.

(3)

From ASHE BKPV Code Section III, Division 2, 1983 Edition, Table C-3730-1, using Su 0.125 in. based on test results given in BC-TOP-1 Appendix B (Ref. 6).

F C

WALL FLOOR F

T.'

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Ref.

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.ACKS IMP&.Q,Q(~<+ T~

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D)RECT log OF'MPAQP Pool Layout Unit 2

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NAX I."1U11 CALCULATED LOAD 58 s 6 LOAD USED IN EVALUATION 80K APP L I ED AS t

I N E LOAD AT LOCAT I ON OF 61 RDLE BAR NAXI I!UN VERT I CAL LOAD ON SUPPORT LEG 189 K I PS, LECi S

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DIAMETER CONCRETE BEAR I NG STRESS' SKS I

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SLI DING EFFECTS FORCE 151 K I PS LOAD RES I STED BY FR I CT I ON BEAR I NG OF EMBEDDED ANGLE LOAD ON LI NER HELD SEAMS

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MEETING

SUMMARY

DISTRIBUTION ocket or Central file NRC PDR Local PDR PAD83 RDG ORAS H. Denton E. Rossi D. Crutchfield G. Lainas S.

Varga H. Schierling OELD E. Jordan B. Grimes J. Partlow (emergency Preparedness only)

ACRS (10)

OPA N. Olson Plant Service List C.

Yogan Resident Inspector Regional Administrator NRC Partici ants R.

Ba1 1 ar d D. Jeng F. Rinaldi H. Polk J.

McGurren l

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UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 February 28, 1986 50-275/323 Diablo Canyon MEMORANDUM FOR:

FROM:

SUBJECT:

The Division.of determined that Chief, Document Management

Branch, TIDC Director, Division of Rules and Records, ADM REVIEW OF UTILITY EMERGENCY PLAN DOCUMENTATION I

Rules and Records has reviewed the attached document and has it may now be made publicly available.

gg~

Donnie H. Grimsley, Director Division of Rules and Records Office of Administration

Attachment:

As stated

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