ML20214B525

Summary of 860114 Meeting W/Util,Bechtel & New England Coalition on Nuclear Pollution to Discuss Proposed Cable Tray Qualification Program Which Utilizes Dynamic Testing Rather than Traditional Linear Elastic Analysis

ML20214B525
Person / Time
Site:	Seabrook
Issue date:	02/10/1986
From:	Nerses V Office of Nuclear Reactor Regulation
To:	NRC
References
NUDOCS 8602200587
Download: ML20214B525 (8)

Text

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~g UNITED STATES l b' o NUCLEAR REGULATORY COMMISSION l 3 ,I wAsHmoroN, D. C. 20555

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\*****/ g 1.0 W Docket Nos.: 50-443 and 50-444 APPLICANT: Public Service Company of New Hampshire -

New Hampshire Yankee Division FACILITY: Seabrook Station, Units 1 and 2

SUMMARY

OF MEETING HELD ON JANUARY 14, 1986 TO DISCUSS CABLE TRAY QUALIFICATION PROGRAM (DYNAMIC TESTING)

' On January 14, 1986, representatives of Public Service Co. of New Hampshire and others met with the NRC staff to present and discuss the applicant's proposed cable tray qualification program which utilizes dynamic testing as .

. opposed to traditional linear elastic analysis. Attendees are listed in Enclosure 1. Highlights of the meeting are summarized below.

Completing the seismic qualification (construction) of cable tray supports at Seabrook by traditional linear elastic analysis methods will require that a substantial amount of axial bracing (both horizontal and vertical) be designed and installed. By utilizirg dynamic testing methods to qualify cable tray supports versus traditional analysis, the applicant seeks to demonstrate that the existing support configurations (those with and without horizontal bracing) are seismically adequate.

The purpose of the meeting was to provide the applicant further opportunity to describe the cable tray qualification program and receive coments of the NRC staff. The staff had several coments, which are provided in Enclosure 2, on -

the applicant's report that was submitted on December 20, 1985 to the NRC for review.

The staff indicated they had reviewed and accepted the applicant's request for 20% cable tray damping for the Seabrook cable tray configuration based on relevant ANC0/Becthel tests.

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The staff requested that the applicant demonstrate that their cable tray support design complies with the AISC criteria as noted in FSAR section 310(B).3.2.2. In demonstrating compliance with this criteria, the applicant inditated the majority of cable tray _ supports in the plant will be qualified 8602200587 860210 PDR ADOCK 05000443 A PDR

Public Service Company of New Ha:npshire by use of an engineering analysis approach. For the remaining cable tray supports, analysis or testing may be used to demonstrate the above noted criteria provided they have been reviewed and accepted by the staff.

Victor Nerses, Project Manager PWR Project Directorate #5 Division of PWR Licensing-A 3-

Enclosures:

1. List of Attendees .

2. Coments on Cable Tray Report cc: See next page

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, Mr. Robert J. Harrison

'. Public Service Company of New Hampshire Seabrook Nuclear Power Statior.

CC:

Thomas Dignan, Esq. E. Tupper Kinder, Esq.

, John A. Ritscher, Esq. G. Dana Bisbee, Esq.

Ropes and Gray Assistant Attorney General 225 Franklin Street Office of Attorney General.

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Boston, Massachusetts 02110 208 State Hosue 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 Connission Post Office Box 700 Dr. Mauray Tye, President Seabrook, New Hampshire 03874 Sun Valley Association 209 Sunner Street Mr. John DeVincentis, Director Haverhill, Massachusetts 01839 Engineering an.' Licensing Yankee Atomic Electric Company .

. Robert A. Backus, Esq. 1671 Worchester Road O'Neil, Backus and Spielman Framingham, Massachusetts 01701 116 Lowell Street Manchester, New Hampshire 03105 Mr. A. M. Ebner, Project Manager United Er.gineers & Constructor::

Ms. Beverly A. Hollingworth 30 South 17th Street 7 A Street Post Office Box 8223 Hampton Beach, New Hampshire 03842 Philadelphia, Pennsylvania 19101 William S. Jordan, III Mr. Philip Ahrens, Esq.

Diane Curran Assistant Attorney General Hannon, Weiss & Jordan State House, Station f6 20001 S Street, NW Augsta, Maine 04333 Suite 430 -

~ Washington, DC 20009 Mr. Warren Hall Jo Ann Shotwell, Esq. Public Service Company of Office of the Assistant Attorney General New Hampshire Environmental Protection Divisten Post Office Box 330 One Ashburton Place Seabrook, New Hampshire 03874 Boston, Massachusetts 02108 Seacoast Anti-Pollution League D. Pierre G. Cameron, Jr., Esq. Ms. Jane Doughty General Counsel 5 Market Street

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Public Service Company of New Hampshire Portsmouth, New Hampshire 03801 Post Office Box 330

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Manchester, New Hampshire 03105 Mr. Siana P. Randall 70 Collins Street

Regional Administrator, Region I Seabrook, New Hampshire 03874 U.S. Nuclear Regulatory Connission 631 Park Avenue Richard Hampe. Esq.

King of Prussia, Pennsylvania 19406 New Hampshi-e Civil Defense Agency 107 Pleasant Street Concord, New Hampshire 03301 w +w- w- ms ~w- -

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Public Service Company of Seabrook Nuclear Power Station l New Hampshire

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Mr. Calvin A. Canney, City Manager Mr. Alfred V. Sargent, i City Hall Chairman

' 126 Daniel Street Board of Selectmen Portsmouth, New Hampshire 03801 Town of Salisbury,-MA 01950 t

i Ms. Letty Hett Senator Gordon J. Humphrey Town of Brentwood ATTN: Tom Burack RFD Dalton Road U.S. Senate

Brentwood, New Hampshire 03833 Washington, D.C. 20510 Ms. Roberta C. Pevear Senator Gordan J. Humphrey Town of Hampton Falls, New Hampshire ATTN

Herb Boynton Drinkwater Road 1 Pillsbury Street Hampton Falls, New Hampshire 03844 Concord, New Hampshire 03301

- Ms. Sandra Gavutis Mr. Owen B. Durgin, Chairman Town of Kensington, New Hampshire Durham Board of Selectmen RDF 1 Town of Durham East Kingston, New Hampshire 03827 Durham, New Hampshire 03824 Charles Cross, Esq.

Chairinan, Board of Selectmen Shaines, Mardrigan and Town Hall McEaschern South Hampton, New Hampshire 03827 25 Maplewood Avenue Post Office Box 366 Mr. Angie Machiros, Chairman Portsmouth, New Hampshire 03801 Board of Selectmen for the Town of Newbury Hawbury, Massachusetts 01950 Mr. Guy Chichester, Chaiman

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Rye Nuclear Intervention Ms. Cashman, Chairman Comittee Board of Selectmen c/o Rye Town Hall -

Town of Amesbury 10 Central Road Town Hall Rye, New Hampshire 03870 Amesbury, Massachusetts 01913 Jane Spector Honorable Richard E. Sullivan Federal Energy Regulatory

- Mayor, City of Newburyport Comission Office of the Mayor 825 North Capital Street, NE City Hall Room 8105 Newburyport, Massachusetts 01950 Washington, D. C. 20426

! Mr. Docald E. Chick, Town Manager Mr. R. Sweeney Town of Exeter New Hampshire Yankee Division 10 Front Street Public Service of New Hampshire Exeter, New Hampshire 03823 Company 7910 Woodmont Avenue Mr. William B. Derrickson Bethesda, Maryland 20814 Senior Vice President Public Service Company of New Hampshire Post Office Box 700, Route 1 3

Seabrook, New Hampshire 03874

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Seabrook-Cable Tray Qualification Meetir.g January 14, 1986 ATTENDEES -

V. Nerses -

NRC/NRR/PD#5/Pjt. Mngr.

S.P. Chan -

NRC/NRR/PAEB D. Jeng -

NRC/NRR/PAEB P. McMahon -

Bechtel D. Johnson -

Yankee Atomic D. Maidrand -

YNSD - Asst. Pjt. Mngr.

R.E. White -

YNSD - Mech. Eng.

A.R. Dufault -

United Engineers & Constructors, Inc. .

. D. Curran -

Harmon & Weiss New England Coalition on Nuclear Pollution K. Manoly -

NRC/RI/ Division of Reactor Safety R.E. Sweeney -

NHY - Bethesda O

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Enclceure 2

- Review of " Cable Tray Support Qualification Program - Final Report, December 1985" Transmitted by letter SBN-911. T.F. B7.1.2 from John DeVincentis of PSNH to Vincent S. Noonan of NRC.

We need the following additional information to complete the review: (This report furnishes general information on the qualification program and lacks technical details.

Most information on testing including test set up, procedures, instrumentation and results are believed to be found in the references which may have or have not been reviewed by NRC Staff. However, we still need clarification and detailed explanat'.'on in other items).

1. It is stated in Sect. 3.3 that the acceptance criteria consists of the existing criteria, enhanced to reflect findings from the recent tests. We like to know specifically and quantitatively the existing criteria and enhancements of each item (e.g., struts, connections, tray hold down devices) and its parameters (e.g., stress, deflections, displacements).

2. In Sect. 4.1.4 it is stated that two distinct nonlinearities associated wfth tray system dynamics were observcd, aad it tas recommended to evaluate tray responses with a linear finite element model. We would like to point out that assumption of linearity is acceptable for interpolation purpose only. For extrapolation purpose a nonlinear theory must be developed and provided for staff review.

3. Sections 4.1.5 and 4.2.3 are both addressed to " Analytical Applications Program."

It is not clear what analysis or analytical approach is applied to the qualifi-cation program. Could it be a sample analysis or data analysis of statistical

• nature? Or, a stress analysis or structural analysis based on theories of engineering mechanics?

4. 'One objective of this qualification program is to re-evaluate 2,he need for centinued installation of extensive lateral bracing, especially bracing designed only to reach axial loads (See cover letter of the report). This reviewer feels that elimination of certain lateral bracing of the cable raceway system is basically a design change and the design adequacy has been verified by qualifi-Cdtion tests. As long as the structural system is well designed and the design criteria remain unchanged, the proposed design change should be accepted.

Therefore, we requ'st design and analysis calculations of the proposed configuration of cable raceway system for review.

5. Provide information on how damping values listed in Tables 4-6 and 4-7 are obtained.

S. P. Chan 1-10-86

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Public Service Company of New Hampshire ,

b by use of an engineering analysis approach. For_the remaining cable tray supports, analysis or' testing may be used to demonstrate the above noted criteria provided they have been reviewed and accepted.by the staff.

Victor Nerses, Project Manager PWR Project _ Directorate #5 Division of PWR Licensing-A

Enclosures:

1. List of Attendees 2 .' Comments on Cable Tray Report cc: See next page W.

UFC .:PDf5 :PD#5 cyp , :PD#5  :  :  : s 1.__

. _____:____..u..___:_____ - __: ___________:________..._:___________.:.______..__

NAME : . r e's:js:S. Chan^ :D. Jeng -:  :  :  : :

_____: 4._________:____________:___.....____:______...___:____________:__...____ . :_____..___.

DATE':g/ /d/86 :01/29/86  : ' :.  : ~:

01/L}/86 0FFICIAL RECORD COPY.

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Meeting Suraary Distribution Oschetior Central File NRC Participants NRC PDR Local PDR PD#5 Reading' File J. Partlow (Emergency Preparedness only)- _

Branch Chief Project Manager OELD E. Jordan B. Grimes ACRS(10)

'l cc: Licensee and Plant Service List R

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