ML20079N681

Interim Deficiency Rept,Item 108 Re RHR 4,160-volt Switchgear Installation Records.Initially Reported on 831216.Latest Design Drawings Depicting Installation Configuration Will Be Reviewed Against Installation Records

ML20079N681
Person / Time
Site:	Fermi
Issue date:	01/16/1984
From:	Wells D DETROIT EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
108, EF2-66491, NUDOCS 8401300298
Download: ML20079N681 (3)

Text

- - _ - _ _ - - _ - _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _

c

• AmB Donald A. WeOls Managm Ouety Assumce (313) 237 9657 2000 Second Avenue M f3i$$$3Y* N op u 822e January 16, 1984 EF2-66491 Mr. James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Ccmnission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

Report of 10CFR50.55(e) Item on RHR 4160V Switchgear Installation Records (#108) l

Dear Mr. Keppler:

On Dec eber 16, 1983, Detroit Edison's Mr. J.W. Fischer, Jr.,

Quality Engineer - Construction Quality Assurance telephoned

! Mr. R.C. Knop of NRC Region III to leport a proble with the RHR 4160V switchgear installation records at the Fermi 2 site.

f Detroit Edison has been unable to locate the installation records for the RHR 4160V mounting channels and anchor bolts. After exten-sive review, it appears that the mounting installation records do not exist.

On December 16, 1983, a Nonconformance Report (NCR #83-1252) was initiated to identify the deviation.

Detroit Edison Engineering inspected the existing cnchors and determined that it is necessary to provide additional anchoring for all four units. This consists of ignoring the two middle channele, chipping away the finished concrete surface from the two outer channels, adding sections of heavy duty angle iron supported by shim stock and anchor bolting to the floor. The angle iron is then welded to the outside edge of the two cuter channels. During the repair work it was identified that the existing wedge anchors used to support the mounting channels had nute on top and on bottcm.

Due to this configuration, it is probable that the supporting wedge anchors were also used for leveling the channels prior to pouring the finished concrete surface. The use of wedge anchors for level-ing is not in accordance with site requirements. This nonconfer-mance was reported to Mr. J. Konklin, NRC Region III as additional information on 10CFR50.55(e) item #108 on January 10, 1984. It was also added to NCR #83-1252 for Engineering disposition.

Detroit Edison Engineering is in the process of supplying Project Quality Assurance with a list of electrical equipnent, and the latest design drawings that depict the installation configuration.

Project Quality will then review the drawings against the installa-tion records available in order to detemine the scope of the prob-lem.

8 8401300298 840116 PDR ADOCK 05000341 L

M Q$ bb4 PDR i- -

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ 499

_ee :

[

Mr.' James G. Keppler, Regional Administrator January 16, 1984 EF2-66491 Page 2 Another report on this item, either interim or final, will be sent when further infonnation is available. If you have questions con-cerning this matter, please contact Mr. G.M. Trahey, Assistant Director - Project Quality.

Very truly yours, fi h W

\1}Jad DAW /EHN/pn cc: Mr. Richard DeYoung, Director Office of Inspection and Enforcenent U.S. Nuclear Regulatory Ccmnission Washington, D.C. 20555 Mr. Paul Byron, Senior Resident Inspector U.S. Nuclear Regulatory Ccmnission

-6450 North Dixie Highway Newport, Michigan 48166

Mr. James G. .Keppler, Regional Administrator January 16, 1984 EF2-66491 Page 3 bec: - F.E. Agosti i

- T.A. Alessi L.P. Bregni t- O.K. Earle i . W.J. Fahrner/S.H. Noetzel

.A. Godoshian C.M. Heidel W.R. Holland Institute of Nuclear Power Operations (INPO) i W.H. Jens/E.P. Griffing R.S. Lenart P.A. Marquardt/ Docket File (2)

G.M. Trahey.

ARMS

. NRC Follow-Up Book /NRC File Chron File

}

T a

6 y--+, T F f * " **'T"t-'*-~ N "Y-*-T 'T'- -J"w rv-Mv #"'"v="'-t 'v=v - * * - " ht'="PW~*es--Y'-e'e*e've-*WP' e '--ee*e-*-f**- r'- -'r* * * ' *a"+=v'm