ML20023E012

Final Deficiency Rept Re Overpressurizing Primary Containment Pipe Penetration Bellow.Initially Reported on 821213.Test Program & Procedure Developed.Bellows Meet or Exceed Acceptance Criteria

ML20023E012
Person / Time
Site:	Fermi
Issue date:	05/27/1983
From:	Wells D DETROIT EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, EF2-63506, NUDOCS 8306060245
Download: ML20023E012 (2)

Text

.. .-

$?O ~ ?yl e

F Donald A. Wells ycuaown n w-un, 2 V %S/

2000 Second Avenue 31 3 tX)

May 27, 1983 EF2-63506 Mr. James G. Keppler, Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

Final Report of 10CFR50.55(e) Itet on Overpressurizing Primary Containment Pipe Penetration Bellows (#85)

Dear Mr. Keppler:

This is Detroit Edison's final report on the overpressurizing problem on the Primary Containment pipe penetration bellows at the Fermi 2 site. This item was originally reported to Mr. H. M. Wescott's office of NRC Region III by Detroit Edison's Mr. D. Ferencz, Acting, Supervisor - Construction Quality Assurance, on December 13, 1982.

This report concerned possible damage to the Primary Containment pipe penetration bellows as a result of overpressurization during ,

preoperational testing.. The volume between the inner and outer bellows of each pipe penetration was pressure tested at 56.5 psig according to an approved procedure. A subsequent review of the manufacturer's documentation (Tube Turns) disclosed that test pressure should not exceed 35 psig.

To assure no damage to the bellows assembly had occurred, a test program and procedure was developed by Detroit Edison to test a facsimile bellows. The object of the test was to determine bellows behavior and potential deformation resulting from overpressure. The acceptance criteria for meridional yielding and squirm, as stated in the ASME Code,Section III, Article NC36494 (B) and (C), was applied.

Baced on visual observation, measured data, and the computed deforma-tions, it was. concluded that the bellows meet or exceed the acceptr.nce criteria.

i cx N

l 8306060245 830527 1 PDR ADOCK 05000341 g)0 C PDR

o Mr. James G. Keppler, Regia:41 Administrator May 27, 1983 EF2-63506 Page Two If you have questions concerning this matter, please contact Mr. G. M. Trahey, Assistant Director - Project Quality Assurance.

Very truly yours, q 3 ._ _-

j DAW pn ec: Mr. Richard DeYoung, Director Office Inspection and Enforcement

.U. S. Nuclear Regulatory Conaission Washington, D.C. 20555 Mr. Bruce Little, Senior Resident Inspector U. S. Nuclear Regulatory Commission 6450 North Dixie Highway Newport, Michigan 48166 1

i l

1 l

!