ML17275B065

Forwards Request for Info Re Buckling Potential of Steel Containment Shells.Info Requested by 810622

ML17275B065
Person / Time
Site:	Columbia
Issue date:	06/01/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Ferguson R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
References
NUDOCS 8106100496
Download: ML17275B065 (6)

Text

• I Docket No. 50-397 AN

) igej Mr. R. L. Ferguson Managing Director Washington Public Supply System PO Box 968 3000 George Washington Hay Richland, Washington 99352

SUBJECT:

WNP-2 REQUEST FOR INFORMATION The Structural Engineering Branch has a technical assistance contract with Lockheed Company to investigate the buckling potential of steel containment shells.

WNP-2 is one of the two plants that have been selected as the benchmark problems for the study.

He understand that WPPSS has agreed to provide pertinent design information to complete the study.

Attached is the information we need for our study.

He would like you to provide the requested information by June 22, 1981.

If you desire any discussion or.'larification of the enclosed request, please call R. Auluck, Licensing Project Manager at (301) 492-7702.

Sincerely.

Encl osure'...

DISTRIBUTION As stated -.

cket TERA NR D

NSIC cc: w/enclosure /PDR TIC See next page LBy2 Reading ASchwencer SKim MService RAuluck RTedesco DEisenhut/RPurple OELD I8IE (3)

ACRS (16)

CKHMl sfSned by Mert 4 TeIeeoo, R~'. Tedesco, Assistant Director for Licensing Division of Licensing OFFICE/

SURNAME) 0ATE f>

ul uck: sp 5jg$ /81

~ ~

LB2 ASchw n

A/DL 0 ~ ~ ~ 0 0 ~ ~ ~

RTedesc 5/P/81

~ ~ ~ ~

~

~

I ~ ~ ~ ~ ~ ~ P NRC FORM 318 110/80) NRCM 0240 OFFICIAL RECORD COPY

• USGPOI 1990-329 824

C a.444 4

4

~

I 4

.1

• 4 '4

~

~

V 44 ~

4 ~

4' 4

r Ar 1'-

~

~

4 4

4 1

• rvr4rr4r ~

1 4 g 4

44 P,

4t

~ 41<<4

~ 4 1

Cr

~

V 444%

4 gg I

I>>4 44 4

~

4 1.4 4

I

~ \\

1

~ 4

~ 4.

4 4

4-gt 4 1r,r p

~

444

-r I

~

s

~ <<4 4

\\

ll 44V 4 ~

4 4Vv *4, 4~4( grg;;9e XeW";V'".'g.

J,dr@

rr I

4

~

4 4 4 1 gw 4 wrrv

~

4 1 gV4.

rgc g. 'l

~

I

~ 4/g 4

'4 <h44

~ ~

4rrrr ~

~

I~

4'~~44(,.l

'Wit

4 ir frjl lrrg

"".?'~ 6;i C' V&g 4'rrgr '

rwr 4, '" 44'.'R*flP9? i'

\\

(~ j

<~fr Fr'4

..~~T)i IJ 44

~ rr

ENCLOSURE 1.

Support conditions of the steel containment shell at foundation.

2.

Geometry of all stiffeners; method by which the stiffeners are attached to the shell wall (continuous welding).

Locations of the stiffeners.

3.

Haterial properties for all structural parts:

a.

h/odulus, poisson's ratio b.

Stress-strain curve (for future benchmark runs with plasticity) 4.

Description of mathematical model used to represent the containment geometry.

5.

Are any estimates of sizes and types of imperfections availablef If so, we want this information.

6.

Critical buckling stresses-buckling resisting capacity.

7.

Stress distribution in the shell as a result of worst possible combination of applied loads.

8.

Load combination corresponding to (7) above.

9.

Safety margin.

1' 1

Nr.

R. L. Ferguson Managing Director Washinoton Public Power Supply P. 0.

Box 968 3000 George W!ashington Way

Richland, W!ashington 99352 cc:

Richard g. guigley, Esq.

WPPSS P. 0.

Box 968 Richland, Washington 99352 Nicholas Lewis, Chairman 820 East Fifth Avenue 01ympia,. Washington 98504 Mr. G.

C. Sorensen, Licensing Manager Washington Public Power Supply System P. 0.

Box 968 Richland, Washington 99352 l1r. Albert D. Tooth Resident Inspector/WPPSS-2 c/o U. S. Nuclear Regulatory Com!nission P. 0.

Box 69 Richland, Washington 99352 Nicholas Reynolds, Esq.

Debevoise 8 Liberman 1200 Seventeenth

Street, N.

W.

Washington, D. C.

20036 Mr. 0.

K. Earle, Project Licensing Supervisor Burns 8

Roe Incorporated 601 Williams Boulevard

Richland, Washington 99352

~

h

I 5

I il