ML18092B527

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Summary of 870327 Meeting W/Util Re Electrical Grid Stability & Plant Operations in Light of Recent Outage of 500 Kv Transmission Line Due to Damage.List of Attendees & Safety Evaluation Encl
ML18092B527
Person / Time
Site: Salem, Hope Creek, 05000000
Issue date: 04/10/1987
From: Trammell C
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
Shared Package
ML18092B528 List:
References
NUDOCS 8704240075
Download: ML18092B527 (6)
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ATTACHMENT A UNITED STATES

  • NUCLEAR REGULATORY COMMISSION WASHINGTON. D. C. 20555
  • April 10,. 1987 Docket Nos. 50-272, 50-311 and 50-354 LICENSE:

FACILITIES:

SUBJECT:

Public Service Electric & Gas Company

  • Salem Generating Station Hope Creek Generating Station

SUMMARY

OF MEETING HELD ON MARCH 27, 1877 -

ARTIFICIAL ISLAND GRID STABILITY On March 27, 1987, representatives of Public Service Electric and Gas Compan.v (PSE&G) met with the NRC staff to discuss electrical grid stability and plant operations in light of a recent outage of a 500-kv transmission line due to damage.

Those attending the meeting are identified in Attachment 1.

Questions transmitted to PSE&G the previous da.v are shown in Attachment 2.

Highlights of the meeting are sunmarized below.

A 500-kv transmission line from Artificial Island to Delaware (crossing the Delaware River) was extensively damaged by a ship collision and will require extensive and lengthy repair. This leaves Salem/Hope Creek plants with three off-site transmission lines.

Because of grid stability considerations PSE&G has reduced the power level of the three units at Artificial Island (Salem 1/2, Hope Creek), to about 70% of capacity.

On the strenoth of additional analyses, PSE&G has concluded that Hope Creek and Salem 2 can be operated at about 90% of full power provided that a generator trip (and thus a reactor trip} for Salem 1 is installed to operate*

should one of the lines, the DEANS line, fail. Salem 1 would be operatP.d at 100%.

The purpose.of the meeting was for the NRC staff to gain a full understanrling of the grid stability analysis and associated in-place restrictions on power operation u~til the damaged Delaware transmission line can be repaired.

More details of the matter and NRC's assessment are pr.ovided in Attachment 3.

At the conclusion of the meeting, PSE&G was told that we agreed with plant operation as proposed.

We also requested PSE~G to confirm or document the five items identified in Attachment 3.

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'* ':/. _* PSE&G will also revise its safety evaluation in response to staff comments,

,. e.g., distinguish more clearly between* stability of the grid and stability of

the units, and transmit a cop.v of the analysis to Region I.

Attachments:

. As stated cc: See next page

~m-:frau~

Charles~. Trammell, Project Manager PWR Project Directorate #5 Division of PWR Licensing-A

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Mr. C. A. McNeill Public Service Electric & Gas Company cc:

Mark J. Wetterhahn, Esquire Conner and Wetterhahn Suite 1050 1747 Pennsylvania Aven~e, NW Washinqton, DC

?.0006 Richard Frylina, Jr., Esouire Assistant General Solicitor Public Service Electric & Gas Company P. 0. Box 570 - Mail: Code TSE Newark, New Jersey 07101 Gene Fisher, Bureau of Chief Bureau of Radiation Protection 380 Scotch Road Trenton, New llersey 086?8 Mr. John M. d.Jpko,,lr.

General Manaoer - Salem Operations Public. Service Electric & Gas Company Post Office Box E J.Jancocks Bridqe, New Jersey 08038 Robert Traae, Mayor tower Alloways Creek Township Municipal 1-'all J.Jancocks Brid9e, New Jersey 08038 Thomas Kenny, Resident Inspector Salem Nuclear Generatin~ Station U.S. Nuclear Reoulatory *conmission Drawer I J.Jancocks Bridge, New Jersey 08038

. Richard F. Enqel Deputv Attornev General Department of i.aw and Public Safety CN-112 State J.Jouse Annex Trenton, New Jersey 086?5 Frank Casolito, Action Chief*

Bureau of Radiation Protection Department of Environmental Protection 380 Scotch Road Trenton, New Jersey 08628

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Salem Nuclear r.enerntinq Station Richard 8. McGlynn, *Commission Deoartment of Public ~tilities State of New Jersey 101 Commerce Street Newark, New Jersey 0710?.

Reqional Administrator, Region I IJ.S. Nuclear Requlator_v Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 tower Alloways Creek Township c/o Marv 0. 1-'enderson, Clerk Municipal Building, P.O. Box 1~7

~ancocks Bridge, New Jersey 08038 Mr. Bruce A. Preston, ~anaoer Nuclear ticensi~o ~ R~aulation Public Service Electric & G~s Companv P. 0. !Jax ?Jn J.Jancocks Bridge, New Jersey OP038 Mr. David Wersan Assistant Consumer Advocate Office of Consumer Advocate 1425 Strawberry Square J.Jarrisburg, Pennsylvania 171?0

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Mr. C. A. McNe111.

Public Service Electric & "Gas Co.

cc:

Gregory Minor Richard Hubbard Dale Bridenbauah MHB Technical Associates 1723 Hamilton Avenue, Suite K San Jose, California 95125

  • Troy B. Conner, Jr., Esquire Conner & Wetterhahn 1747 *Pennsylvania Avenue N.W.

Washington, D.C.

20006 Richard Fryling, Jr., Esquire Associate General Solicitor Public Service Electric & Gas Company P.O. Box 570 TSE Newark, New Jersey 07101 Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 241 Hancocks Bridge, New Jersey 08038 Richard F. Engel Deputy Attorney General Division of Law Environmental Protection Section Richard J. Hughes Justice Complex CN-112P Trenton, New Jersey 08625 Mr. R. S. Salvesen General Manager-Hope Creek Operation Public Service El~ctric & Gas Co.

P.O~ Box A Hancocks Bridge, New Jersey 08038 Mr. B. A. Preston Public Serv-ice Electric &:Gas Co.

P.o. Box 236 Hancocks Bridge, New Jersey 08038

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H.ope Creek Generating Station Susan C. Remis Division of Public Interest Advocacy New Jersey State Department of the Public Advocate

  • Richard J. Hughes Justice Complex CN-850 Trenton, New Jersey 08625 Office of Leaa l Counse 1 Dep-artment of Natural Resources and Environmental Control 89 Kings Highway*

P.O. Box 1401 Dover, Delaware 19903 Ms. Rebecca Green New Jersey Bureau of Radiation*

Protection 380 Scotch Road Trenton, New Jersey 08628 Mr. Anthony J. Pietrofitta GenerJ..l Manager Power Production Engineering Atlantic Electric 1199 Black Horse* Pike Pleasantvi'lle, New Jersey 08232 Reaional Administrator, Reaion I U.S. Nuclear Regulatory Corrmission 631 Park Avenue King of Pruss.ia, Pennsylvania 19406 David M. Scott, Acting Chief Bureau of Nuclear Engineering Radiation Protection Proaram Department of Environmental Protection CN 411 Trenton, New.Jersey 08625

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PSE&G R. Burricelli B. Preston

c. McNeil J. Zupko J. Hebson L. Ha.ios R. Werns*ing F. Renna NRC
c. Trammell A. Marinos F. Rosa T. Kenny E. Rossi T. Novak D. Wagner

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F. Paulitz

o. Chopra
s. Weiss
c. Anderson A. Rubin J. Knight
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list of Attendees Salem/ Hope Creek Me~tinq March 27~ 1987

Attachment 1

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Questions for Meeting With PSE~G on 3/27/87

1)

Describe fully the grid instability that is experienced on loss of the Deans 1 ine.

2)

Why is *the Deans line the critical line on the system? What is the effect on grid stability of losing one of the other 1i nes instead of the Deans 1 ine?

3)

What is the basis for tripping Salem Unit 1 instead of one of the other two units?

4)

Describe your proposed tripping scheme and its operation with specific reference to the associated time delays and grid stability conditions.

5)
6)

Have you confinned the results of your previous degraded grid voltaqe analysis based on this new proposed operating mode?

How is assurance provided that the required reduction to 2330 MW will be implemented on occurrence of the cited conditions requiring this power reduction?

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