ML20098F266

Interim Deficiency Rept Re Components & Component Supports Spanning Structural Expansion Joints.Initially Reported on 840405.Complete Walkdown of Remaining Areas & Identification of All Potential Problems Undertaken

ML20098F266
Person / Time
Site:	Seabrook
Issue date:	09/13/1984
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-713, NUDOCS 8410020529
Download: ML20098F266 (4)

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.. ' NE}! HAMPSHIRE YANKEE DIVISION j SEABROCK STATION l Eashe*% ofm=-

l 1671 Worcewer Rood Frominghom. Monochvietts 01701 (417) . 872 8100 PubEJ Service of New Hampshire Septomber 13, 1984 SBN-713 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention: Mr. Richard W. Starostecki, Director Division of Project and Resident Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of April 5, 1984, A. L. Legendre, Jr. (YAEC) to J. Beall (NRC Region I)

(c) PSNH Letter, dated May 4,1984, " Interim 10CFR50.55(e)

Report; Components and Component Supports Spanning Expansion Joints", J. DeVincentis to R. W. Starostecki

Subject:

Interim 10CFR50.55(e) Report; Components and Component Supports Spanning Expansion Joints

Dear Sir:

On April 5, 1984, we reported a potential 10CFR50.55(e) deficiency to Region I [ Reference (b)], regarding components and component supports spanning structural expansion joints. The referenced letter indicated that an additional report would be submitted by August 15, 1984, however, as was indicated to the Senior Resident Inspector, the corrective action specified herein has only recently been determined.

It has been determined that this item is reportable under 10CFR50.55(e). l The following information is being filed pursuant to the interim reporting 1 provision of 10CFR50.55(e)(3). '

A. Description of Deficiency We have identified conditions in the containment annulus area where components and component supports span expansion joints located in the Annular Steel Framing System. The expansion joints serve to relieve thermal stresses applied to the annulus steel framing during normal plant operation. The original designs of these components and component supports did not consider this condition. The expansion joint movements could apply additional stresses to these components and component supports. Our investigation into this matter was initiated by an inquiry from the NRC Senior Resident Inspector.

1000ElmSt.,P.O. Box 330 Manchester.NH03105 Te'ephone(603)669-4000 TWX7102207595 8410020529 840913 DR ADOCK 05000 g7

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United States Nuclear Regulatory Commission September 13, 1984 Attention: Mr. Richard W. Starostocki, Director Page 2 A field walkdown of all building expansion joints is being performed to identify all areas where an expansion joint movement could-adversely affect a component, component support or building structural steel. The fleid walkdown is approximately 85%

complete. The containment annulus area portion of the field walkdown is complete; the-field walkdowns of the remaining areas of the containment and the gast and West Pipe Chase structures is ongoing.

To date, the walkdown has identified a relatively small number of expansion joint-related conditions that could adversely affect the structural integrity of safety-related systems and portions of the

, containment Annular Steel Framing System. These identified conditions are: one. pipe support supplementary steel member, four cable tray support supplementary steel members, and portions of the containment Air Handling System (this duct work is designated nonsafety-related but its failure could adversely impact safety-related systems). Because a rigorous analysis would be required to determine the acceptability of these identified 1 conditions, we have decided to modify the existing design.

We have determined that this item constitutes a reportable condition under 10CFR50.55(e) for the following reason:

o The deficiency is significant such that the design does not conform to the criteria and bases as stated in the FSAR and had the potential for remaining undetected.

B. Analysis of Safety Implications The omission of the effect of expansion joint movement on components, component supports, or structural steel could adversely affect the structural integrity of the safety-related systems and

. the Annulus Framing System.

C. Corrective Action l

The following actions have either been taken, or will be taken, to assure that the integrity of the structures and systems is not adversely affected.

a. Completo walkdown of the remaining areas.

b. Identify all potential problems.

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c. Perform analysis to define those components or supports which l

are acceptable as designed.

d. Make design changes where it is expeditious to do so in lieu of analysis to assure the integrity of the systems and structures.

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. United States Nuclear Regulatory Commission September 13, 1984-

-Attention: Mr. Richard W._Starostocki,~ Director- Page 3 e.- Issue instructions to the contractors and preconstruction l walkdown crews such that any new installations will meet the design requirements.

We will notify Region I when the above corrective actions are completed.

Very.truly yours, YANKEE ATONIC ELECTRIC COMPANY 4

yL / A4 John DeVincentis, Director Engineering and Licensing i

cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 i

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.. W[lliamS. Jordan,III Diana Curran .

Harmon, Weiss & Jordan 20001 S Street N.W. Brentwood Board of Selectmen Suite 430 RED Dalton Road Washington, D.C. 20009 Brentwood, New Hampshire 03833 Robert G. Perlis "

Office of the Executive Legal 91 rector Edward F. Meany U.S. Nuclear Regulatory Commission Designated Representative of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus, Esquire Rye, NH 03870 116 Lowell Street P.O. Box 516 Calvin A. Canney Mancehster, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 208 State House Annex the Town of Hampton Concord, NH 03301 5 Morningside Drive Hampton, NH 03842 Anne Verge, Chairperson Board of Selectmen Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03642 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03570 Designated Representative of the Town of Kensington Carole F. Kagan, Esq.

RFD 1 East Kingston, NH 03827 Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire ' '

• Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Board of Selectmen Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 01950 Boston, MA 02108 Town Manager's Office Senator Gordon J. Humphrey Town Hall - Friend Street -

U.S. Senate Amesbury, Ma. 01913 Washington, DC 20510 -

(Attn: Tom Burack) Senator Gordon J. Humphrey 1 Pillsbury Street Diana P. Randall Concord, NH 03301 70 Collins Street (Attn: Herb Boynton) -

SEabrook, NH 03874 Richard E. Sullivan, Mayor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 Town of Exeter )

10 Front Street Exeter, NH 03833

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