ML19350E270

Supplemental Responses to NRC 801126 Interrogatories Re Extent of Design Safety Margins,Wall Footing Design, Structural Analyses & Diesel Generator Bldg Analysis. Affidavit & Certificate of Svc Encl.Related Correspondence

ML19350E270
Person / Time
Site:	Midland
Issue date:	06/10/1981
From:	Dhar B, Swanberg N CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD)
References
ISSUANCES-OL, ISSUANCES-OM, NUDOCS 8106170223
Download: ML19350E270 (8)

Text

--

, bllUfV) . .,

, . $1

. RILATED CORRESPONDENCE 5 = $

e.

UNITED STATES OF AMERICA .

.'" dljy 1 2 Igg 1~ s, -

NUCLEAR RECULATORY COMMIESION B" 3 Orrie c}' e

,b BEFORE THE ATOMIC SAFETY AND LICENSING BOARD \, y

- c) t.n In the Matter of Docket Nos. 50-329-0M

- r r- 50-330-0M

.- CONSUMERS POWER COMPANY 50 ' .

-0 Y Q, (Midland Plant, Units 1 and 2) g

- ' 'a APPLICANT'S SUPPLEMENTAL RESPONSES Eb@S

-V o b& .

(3 TO NRC STAFF INTERROGATORIES DATED 11/26/80 5 fgy 9

.N Question 1(a)

The analyses referred to in our initial response described or vi e'$c,hI

~ ~&

,the extent of design safety margins.

Question 2(b)

(The question posed here was so vague that Applicant was unable to determine what time period was referenced. Further, the question and the Staff Motion to Compel argumentatively assumes that the driven pile design would not provide a stable footing, which is not true.)

With respect to whether or not a wall footing design was given consideration prior to the decision to utilize driven piles, to the best of Applicant's present recollection, the answer is no.

! Question 2(c) pol s

The only structural analyses performed are those mentioned in our initial response to this Interrogatory. g; Lais Ty$*~

'N/ais :

p --

i2sc V:les l 8106 170 G

t.

Question 5(a) i The initial response to Question 5(a) referred to an analysis which predicts That analysis was future rebar stresses due to differencial settlement.

T . may not be a " tension performed for the diesel generator building.

No such field analysis," as the term is being used by the NRC Staff.

analysis has been performed for the auxiliary building or the service water pump structure, since neither building has demonstrated nor is expected to ,

af ter the implementation of demonstrate appreciable uifferential settlement In the final design of the underpinning schemes for these remedial action.

structures long-term movement of the underpinning elements will be considered.

With respect to the borated water storage tank ring foundation, preliminary

.i

) finite element analyses using soils springs and a 3-dimensional finite

The latest such element model of the structure and the soil were performed.

I analysis predicted high element stresses in the vicinity of an observed crack in the ring foundation and formed the basis for the conclusion that remedial action is necessary. Because of the necessity of deciding upon 1

remedial steps and undertaking further analysis based upon such steps, a final structural analysis has not been completed.

other~than the above, no analysis taking into account increased rebar stresses due to differential settlement or predicting future crack size has .

been performed.

(Note: Applicant invites discussion with the NRC Staf f on this matter in the event the Staf f has follow up or concerns. ) .

. . _ ~ . . . . . _ . . - . , , ,_

Question 5(c)

The analysis for the diesel generator building, which predicts element stresses due to predicted differential settlement, provides information' which is believed to be similar to that provided by a tension field analysis of an.homogenous structure. (See the response to 5(a))

With respect to the other structures, the reason for not performing an analysis of the type described with respect to Question 5(a) above for the diesel generator building were given in Applicant's initial response.

Ouestion9Jc) - - ---

Apparently, Applicant misinterpreted the question. The information with 1

respect to rattlespace for the valve pits is provided below:

The initial readings were taken on November 13, 1978 for the rattlespaces for piping entering the service water valve pits. The final readings were taken on May 2, 1980 after removal of the surcharge.

VALVE PIT VERTICAL HORIZONTAL PEN. 4 LINE # MOVEMENT MIN. GAP MOVEMENT MIN. GAP SWVP #1 A 26"-lJBD-2 - 1/2 1 1/4 - 1/4 2 B 26"-OHBC-54 0 1 - 1/4 1 7/8

-C----- --

26"-lJBD-1 -~1/8 1 3/4 - 1/8 1 1/4 D 26"-OHBC-53 + 1/8 1 3/8 - 1/8 1 7/8 SWVP v2 A 26"-2JBD-2 - - - -

B 26"-OHBC-56 - 1/8 1 3/4 1/4 1 C 26"-2JBD-1 0 1 + 1/8 7/8

~

D , ,

26"-OHBC-55 -

1 3/4 - 1/8 1 7/3

. _ . - , , - . . _ , - ---- , - - . . , , - , . - ~ - - ,_.,_--.-.y,-. -,,-~..- ---.-.---<.-,- ,w,-

4 t.

Direc: ions: Vertical ' pipe r.cVes up relative :: ::.::ratica

- pipe moves down relative to penetration Horizontal + pipe moves east relative to penetration

~

- pipe coves wes: relative to penetra: 2n Questien 1(b) ,

Based upon the statements made by the NRC Staff during their recent structural audit, the documents requested in the Interrogatory were

' provided during the structural audit, excepting certain documents with respect to the service water pump structure which Applicant has consmitted to sending to the NRC Staff.

l l

I I

1 i

i l

l

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD DOCKET NOS. 50-329-0M In the Matter of )

50-330-OH CONSUMERS POWER COMPANY )

) 50-329-OL 50-329-OL (Midland, Units 1 and 2) )

)

)

COUNTY OF WASHTENAW)

)ss STATE OF MICHIGAN )

- - - - - - -----_-_ . ___._ AFFIDAVIT OF BLMAL DEAR Bimal Dhar, being duly sworn, deposes and says that he is employed by Bechtel Associates Professional Corporation, as an Engineering Super-r.

4 visor; that he is responsible for providing Supplemental Responses to i

NRC Staff Interrogatories dated 11/26/80, Nos. 1(a), 2(b), 2(c), 5(a),

and 5(c), and that to the best of his knowledge and belief the above J.

l. information and the answers to the above interrogatories are true and correct.

i

(' 0 V i

- / Bimal Dhar day of 4 -

1981.

Subscribed and sworn to before me this

~

sk / s Notary Public, Washtenaw County, Michigan u . ,

My Co= mission Expires /l;L% d W J6'f' II722;Y A. IICSS _

y

--a gg g v 7173*.,I0, WE e d,*, --- *-

i J 50Y.30,1982

.c CCy31ssIGH II2*.Z3

gp

^ .

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC S*.FETY AND LICENSING BOARD In the Matter of -

) DOCKET NOS. 50-329-0M CONSUMERS POWER COMPANY ) 50-330-0M

) 50-329-OL (Midland., Units 1 and 2) ) 50-329-OL

)

)

COUNTT OF WASHTENAW)

)ss STATE OF MICHIGAN )

AFFIDAVIT OF NEAL SWANBERG Neal Swanberg, being duly sworn, deposes and says that he is em-ployed by Bechtel Associates Professional Corporation, as an Assistant Project Engineer; that he is responsible for providing supplemental responses to NRC Staff Interrogatories dated 11/26/80, No. 9(c), and that to the best of his knowledge and belief the above information and the answers to the above interrogatories are true and correct.

Neal Swanberg Subscribed and sworn to before me this 2 day of jvu U81.

t

~ - . . -. ,

, / Y Notary Public, Washtenaw County, Michigan

. 22--- Y C~ii:SS My Commission Expiresp.; . 1,,','T ',_i,k q .f# 9,,.J,E. ,

. . . ,. c. o .. m w e . ,i s

_.

• s -

--__,,,y_ ,-_,_._,_.J _ - . - _ _ _ __..,-___--r _ _ - - - _ _ . _ _ _ _ _ _ _ . . _ _ , _ _ , , , _ . _ _ , . , _ - _ _ . . , - - . _ _ _ _ , . - - , _ - - _ - - _ . , _ - , . _ _ ,

UNITED STATES OF AMERICA NUCLEAR REGULATORY CO W.ISSION BEFORE THE ATOMIC SAFETY AND LICENSING 30ARD In the Matter of Docket Nos. 50-329-0M 50-330-0M CONSUMERS POWER COMPANY 50-329-OL 50-330-OL (Midland Plant, Units 1 and 2)

CERTIFICATE OF SERVICE I hereby certify that copies of Applicant's Supplemental Responses to NRC Staff Interrogatories Dated 11/26/80, with attached affidavits, were served upon the following persons by depositing copies thereof in the United States Mail, first class postage, on this /00Lday of June, 1981.

Frank J. Kelley, Esq. Michael Miller, Esq.

Attorney General of the Isham, Lincoln & Beale State of Michigan One First National Plaza Stewart H. Freeman, Esq. Suite 4200 Assistant Attorney General Chicago, Illinois 60603 Gregory T. Taylor, Esq.

Assistant Attorney Gene LA Mr. Steve Gadler 720 Law Building 2120 Carter Avenue Lansing, Michigan - 48913 St. Paul, Minnesota 55108 Myron M. Cherry, Esq. D. F. Judd, Sr. Project Manager One IBM Plaza Babcock & Wilcox Suite 4501 P. O. Box 1260 Chicago, Illinois 60611 Lynchburg, Virginia 24505 Mf! Wendell H. Marshall Atomic Safety & Licensing RFD 10 Appeaa Board Midland, Michigan 48640 U. S. Naclear Regulatory

._____ Commission Charles Bechhoefer, Esq. Washington, D. C. 20555 Atomic Safety and Licensing Board Panel U. S. Nuclear Regulatory Commission Mr. C. R. Stephens, Washington, D. C. 20555 Chief, Docketing & Service Sectic Office of the Secretary Dr. Frederick P. Cowan U. S. Nuclear Regulatory Commission 6152 N. Verde Trail Washington, D. C. 20555 Apt. B-125 .

Boca Raton, Florida,,33433

{o ,

I4 ster Kornblith, Jr.

Atomic Safety & Licensing Board U. S. Nuclear Regulatory Consnission Washington, D. C. 20555 Ralph S. Decker, Esq.

• Route 4, Box 1900 Cambridge, Maryland 21613.,

Ms. Mary Sinclair 5711 Summerset Street Midland, Michigan 48640 Atomic Safety & Licensing Board Panel U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Barbara St tis 5795 North t.4ver Road Route 3 Freeland, Michigan 48623

.C* h 7ames E. Brunner Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 N

1 i

i

-_ _ _ - _ _ _ _ . , . _ _ _ _ _ . _ - . . - _ _ _ _ , _ . . . _ . _ _ _ _ _ _ . . - _ . _ . _ , .