ML20214Q529

Summary of 860814 Meeting W/Util,Bnl,United Engineers & Constructors,Structural Mechanics Assoc & Pickard,Lowe & Garrick in Upton,Ny Re Unique Containment Design & Const Features & Inherent Strength Capabilities.Related Info Encl

ML20214Q529
Person / Time
Site:	Seabrook
Issue date:	09/08/1986
From:	Doolittle E Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8609260044
Download: ML20214Q529 (11)

Text

1. f ucuq'o UNITED STATES 8 'n NUCLEAR REGULATORY COMMISSION

, g -r WASHINGTON, D. C. 20655 k...../ $4 SEP N Docket No. 50-443 APPLICANT: Public Service Company of New Hampshire FACILITY: Seabrook Station Unit 1

SUMMARY

OF MEETING WITH PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE TO DISCUSS SEABROOK RISK MANAGEMENT AND EMERGENCY PLANNING STUDY A meeting was held with Public Service Company of New Hampshire on August 14, 1986 at Brookhaven National Laboratory in Upton, New York. The NRC staff was represented by members of the Office of Nuclear Reactor Regulation; Division of PWR Licensing-A and members of Brookhaven National Laboratory (BNL) staff.

The applicant was represented by members of Public Service Company of New Hampshire, New Hampshire Yankee Division, Pickard Lowe and Garrick (PL&G),

United Engineers & Constructors (UE&C) and Structural Mechanics Associates (SMA). A list of attendees is included as Enclosure 1.

The purpose of this meeting was to obtain detailed background information regarding Seabrook's unique containment design and construction features and its inherent strength capabilities. An outline of the meeting discussion topics is contained in Enclosure 2.

Mr. Vince Noonan of the NRC staff opened the meeting by stating that it is necessary to identify all additional information needed at the present time in order to complete this review in the projected 3 month time frame.

Mr. Charlie Hofmayer (BNL) continued by stating that BNL intends to review calculations and confirmatory analysis relating to the design, construction and key elements of containment, then examine failure modes and specific details.

Mr. Rich Toland and K. N. Kalawadia began the presentation with a general ,

discussion of the Seabrook containment design. Mr. Toland said that the ,

Seabrook containment was unique for an east coast design in that the design l basis accident pressure is 52 psi with a seismic design of .25 peak ground acceleration. The containment has a liner with T anchors, is reinforced concrete with rebar and behaves as a shell. He said that the liner acts as a barrier, but not a strengthener from the code point of view.

Differences in the Seabrook design and the Indian Point and WNP 1 and 4 designs were discussed with respect to liner and rebar capabilities.

Mr. C. Hofmayer discussed the fact that we are concerned with those features )

of the design that are unique. Mr. Toland pointed out that the main rebar is I continuous; it goes around openings rather than terminating and the dome rebar is continued on the same plain for each of the 4 quadrants.

8609260044 860908 PDR ADOCK 00000443 A PDR I

Don Wesley, of SMA, discussed containment penetrations and said that there are large margins in the hatch design, so that the hatches have a high pressure capacity. He also said that all major penetrations are below grade. .

The staff went on to ask about containment construction. Did anything unique occur? The applicant stated that very minor rebar indentation occurred and cadweld lineup at certain locations may have caused congestion of rebars behind the liner. However, the cadwelds were scattered and therefore no reduction in strength was taken.

The applicant discussed the results of the containment integrated leak rate test. The containment was maintained at 52 psi for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and the test was successful.

Mr. Rich Toland discussed the containment ultimate strength evaluation per-formed by UE&C. The behavior to the limit state was analyzed; this was up to a point when the shell would undergo large deformations.

Following the discussion of the ultimate strength evaluation by UE&C, SMA reviewed the ultimate strength evaluation performed by them. Mr. Wesley said

= that SMA considered breach of containment liner to be the containment failure point in their analysis. Two types of failure modes were considered: direct /

actual pressure failure of the structure and indirect / interaction related failure at pipe penetrations.

In his discussion of interaction failures Wesley said that failure to isolate purge valves is one of the most dominant in the PRA.

Mr. Art Tingle (BNL) raised several questions regarding the consequence analysis in the Seabrook submittal. He requested weather information in order to run CRAC 2 or MACCS. It was agreed that a conference call would be arranged with Keith Woodard (PL&G) to get this information. Mr. Tingle stated that NRC must determine whether to use CRAC or MACCS.

The effects of external events and the seismic fragility report were briefly discussed. In response to a question from Mr. Goutam Bagchi it was stated that the effects of relay chatter were not looked at in much detail. Although the fragility report was updated, the information has not been included in the new study and will not be incorporated into the SSPSA until next year.

At the end of the meeting the need for a site visit during the first week of September was discussed.

i Containment design and analysis information presented to the staff during the meeting was listed. This is included as Enclosure 3. It was agreed that a ,

followup meeting would be held with BNL to discuss the V Sequence, Containment '

l Isolation and Containment Bypass.  ;

4 The meeting was adjourned at 4:00 p.m.

Elizab h Doolittle, Project Manager PWR Project Directorate #5 i Division of PWR Licensing-A  !

Enclosures t

s s

i

_ essuiss j(6tkI " 4 Containment design and analysis information presented to the staff during the meeting was listed. This is included as Enclosure 3. It was agreed that a followup meeting would be held with BNL to discuss the V Sequence, Containment Isolation and Containment Bypass.

The meeting was adjourned at 4:00 p.m.

Elizabeth Doolittle, Project Manager PWR Project Directorate #5 Division of PWR Licensing-A Enclosures fl b0 0FC :PW :p A  :  :  :  :  :  :

_____:__{______:____________:____________:____________:____________:___

NPRE :EDoolittle  :  :  :  :  :  :

DATE :9/ /86  :  :  :  :  :  :

0FFICIAL RECORD COPY

Meeting Summary Distribution Docket or Central File NRC Participants NRC PDR "

Local PDR E. Doolittle PD#5 Reading File V. Noonan .

J. Partlow G. Bagchi V. Noonan Pro.1ect Manager DGC-Pethesda E. Jordan B. Grimes ACRS (10)

M. Rushbrook 1

cc: I.icensee and Plant Service i

, I.i s t

Mr. Robert J. Farrison

- Public' Service Company of New Hampshire Seabrook Nuclear Power Station I

cc: E. Tupper Kinder, Esq. l Thomas Dignan, Esq. ~ i John A. Ritscher, Esq. G. Dana Bisbee, Esq.

Ropes and Gray Assistant Attorney General Office of Attorney General 225 Franklin Street Boston, Massachusetts 02110 208 State Posue Annex Concord, New Hampshire 03301 Mr. Bruce B. Beckley, Project Manager Public Service Company of New Hampshire Resident Inspector Post Office Box 330 Seabrook Nuclear Power Station Manchester, New Hampshire 03105 c/o US Nuclear, Regulatory Commission Post Office Box 700 Dr. Mauray Tye, President Seabrook, New Hampshire 03874 Sun Valley Association Mr. John DeVincentis, Director 209 Sumer Street Faverhill, Massachusetts 01839 Engineering and licensing Yankee Atomic Electric Company Robert A. Backus, Esq. 1671 Worchester Road O'Neil, Backus and Spielman Framingham, Massachusetts 01701 116 lowell Street Mr. A. M. Ebner, Project Manager i Manchester, New Hampshire 03105

• United Engineers & Constructors William S. Jordan, III 30 South 17th Street Diane Curran Post Office Box 8223 Parmon, Weiss & Jordan Philadelphia, Pennsylvania 19101 20001 S Street, NW Suitt 430 Washington, D.C. 20009 Mr. Philip Ahrens, Esq.

Assistant Attorney General State House, Station #6 Augusta Maine 04333 Jo Ann Shotwell, Esq.

Office of the Assistant Attorney General Environmental Protection Division Mr. Warren Pall One Ashburton Place Public Service Company of Boston, Massachusetts 02108 New Hampshire D. Pierre G. Cameron, Jr., Esq.

Post Office Box 330 Seabrook, New Hampshire 03874 General Counsel Public Service Company of New Fampshire Seacoast Anti-Pollution League Post Office Box 330 ,

Ms. Jane Doughty Manchester, New Fampshire 03105 i l

5 Market Street Portsmouth, New Hampshire 03801 Regional Administrator, Region I U.S. Nuclear Regulatory Comission '

Mr. Diana P. Randall 631 Park Avenue 70 Collins Street King of Prussia, Pennsylvania' 19406 Seabrook, New Fampshire 03874 Richard Pampe Esq.

New Hampshire Civil Defense Agency 107 Pleasant Street Concord, New Hampshire 03301

.Public Service Company of Seabrook Nuclear Power Station

, New Hampshire cc:

Mr. Calvin A. Canney, City Manager Mr. Alfred V. Sargent, City Hall Chairman 126 Daniel Street Board of Selectmen -

Portsmouth, New Hampshire 03801 Town of Salisbury, MA 01950 Ms. Letty Pett Senator Gordon J. Humphrey Town of Brentwood ATTN: Tom Burack RF0 Dalton Road U.S. Senate Brentwcod, New HampsLire 03833 Washington, D.C. 20510 Ms. Roberta C. Pev e r Mr. Owen B. Durgin, Chairman Town of Hampton Falls, New Hampshire Durham Board of Selectmen Drinkwater Road Town of Durham Pampton Falls, New Hampshire 03844 Durham, New Hampshire 03824 Ms. Sandra Gavutis Charles Cross, Esq.

Town of Kensington, New Hampshire Shaines, Mardrigan and RDF 1 McEaschern East Kingston, New Hampshire 03827 25 Maplewood Avenue Post Office Box 366

- Portsmouth, New Hampshire 03801 Chaiman, Board of Selectmen RFD 2 South Pampton, New Hampshire 03827 Mr. Guy Chichester, Chaiman Rye Nuclear Intervention Mr. Angie Machiros, Chairman Comittee Board of Selectmen c/o Rye Town Pall for the Town of Newbury 10 Central Road Newbury, Massachusetts 01950 Rye, New Hampshire 03870 Ms. Cashman, Chairman Jane Spector Board of Selectmen Federal Energy Regulatory Town of Amesbury Comission Town Fall 825 North Capital Street, NE Amesbury, Massachusetts 01913 Room 8105 Washington, D. C. 20426 Ponorable Peter J. Matthews Mayor, City of Newburyport Mr. R. Sweeney Office of the Mayor New Hampshire Yankee Division City Fall Public Service of New Hampshire Newburyport, Massachusetts 01950 Company 7910 Woodmont Avenue Mr. Donald E. Chick, Town Manager Bethesda, Maryland 20814 Town of Exeter 10 Front Street Mr. William B. Derrickson Exeter, New Hampshire 03823 Senior Vice President .

Public Service Company of New Hampshire Post Office Box 700, Route 1 Seabrook, New Hampshire 03874

Enclosure 1 ATTENDANCE 8/14/86 - Seabrook Containment Strength

1. E. Doolittle NRC Project Manager

2. Vincent S. Noonan NRC/ Director

3. Goutam Bagchi NRC/PWR-A/EB

4. Robert A. Bari BNL

5. Robert E. White NHY-Engineering

6. John DeVincentis NHY-Director / Engineering

7. Robert E. Sweeney NHY-Bethesda Office

8. K. M. Kalawadia SDE NE&C j 9. Fred Torri PLG

10. Don Wesley SMA

11. Jim Moody NHY

12. Paul Bezler BNL

13. Kamal K. Bandypadhyay BNL

14. Jose Pires BNL

15. Charles Hofmayer BNL

16. Rich Toland VE&C

= 17. Bruce Miller BNL l

=

1

.i

r Enclosure 2 Meeting to Obtain Information on Seabrook Containment Strength Agenda

1. Design of containment: UE&C a) Reinforcement details Membrane Radial Shear Tangential Shear Fatch Openings b) Penetration Reinforcement Details c) Design of Penetration Assemblies d) Details of liner e) Basemat and foundation detail f) Relationship to adjacent structures

2. Construction of containment: UE&C a) Material certification b) Strength test results (reinforcing steel, concrete and liner) c) Relevant nonconformance reports (shell and penetration assemblies)

3. Structural Integrity and Integrated leak Rate Test Results: PSNP a) Anomalies b) Comparison with analytical predictions

4. Ultimate Strength Evaluation: UE&C

5. Ultimate Strength Evaluation: SMA

6. Containment Failure Modes: SMA Interaction with adjacent structures

7. Effects of External Events: SMA

8. Action Items: NRC/PSNH

F i .

Enclosure 3 s

DRAWING LIST Stick #1 Containment Building

1. Containment Design

' 2. Main Steam and Feedwater Penetration

3. Containment Penetration

4. Hatch Drawings Stick #2 Adjacent Structure Drawings

, 1. Fuel Building

2. Containment Enclosure

3. Main Steam & Feedwater Pipe Chase (West)

4. Electrical Tunnel

5. Pre-action Valve Building

6. Main Steam Feedwater Pipe Chase (East)

7. Containment Intervals Patick #3 Containment Enclosure D

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e SBB-86-126

~

- . ATTACHMENT 3 Sh. 1 of 2 i

5 INf0RMATIONONCONTAINMENT i.

4 All Design Drawings (Structure & Penetrations) .

D: sign Specs UE&C Design Report -

UI&C Ultimate Capacity Analysis SMA Reports concerning Containnent Capacity and Seisnic Fragility Construction Reports -

~ uravings Showing Interfaces #iWill AdjaceEt Structuras Structural Integrity Test Report Sunnary of Meteria" Test Reports (Concrete, Rebar, Liner) l l

Details cf Structural Analysis Model Used to Deternine Containment Failuro Pressure i l

l l

D 8

e

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