ML19318C833

Responds to IE Bulletin,79-02, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Lists Hangers to Be Repaired

ML19318C833
Person / Time
Site:	Cooper
Issue date:	06/03/1980
From:	Lessor L NEBRASKA PUBLIC POWER DISTRICT
To:	Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-79-02, IEB-79-2, NUDOCS 8007020333
Download: ML19318C833 (3)

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June 3, 1980

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Mr. Glen Madsen U.S. Nuclear Regul'atory Commission Office of Inspection and Enforcement Region IV 611 Ryan Plaza Suite 1000 Arlington, Texas 76011

Subject:

IE Bulletin 79-02

Dear Mr. Madsen:

This letter is written as per my telephone conversation with Bob Spangler on 5-30-80 regarding remaining hangers that do not have an OBE F.S. of 5 or greater. During our telephone conversation, I stated that we had eleven hangers with an F.S. less than 5. I stated that all of them had an OBE F.S. greater than 3 and that we were working on the list on a function and F.S. priority. I indicated that we planned to startup when the main turbine was ready. We will continue to work on hangers with the availability of people, exposure, and core drilling equipment de-termining completion. It is my understanding that you concurred with this approach providing systems remain operable during this work and that all hangers have an SSE F.S. greater than 2.

Following is a list of hangers to be worked on:

OBE SSE Hanger # F.S. F.S. Location and Function

1. RF-H 59 3 to 5 >2 This hanger is on the HPCI feed line to the reactor. The section of line is isolatable with MOV's but HPCI would then be inop.

HPCI will remain operable while .

hanger work is in progress. Ad-ditional plates, beams, channels, and stiffeners are being welded to existing hangers so more wedge l anchors can be installed into the concrete over a larger area.

It is expected that this hanger will be completed by the end of day, 6-3-80.

l 333 800702n

Mr. Glen Madsen June 3, 1980

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2. RC-H 33 3.26 2 The hanger is en a 6" line from l RHR heat exchanger A & B and is 1 only used during steam condensing  ;

mode as a supply to RCIC. The l line is isolatable with MOV's.

The line is.also higher in elevation than emergency condensate storage tank and torus and thus would not affect those supplies to RCIC.

The RCIC will remain operable during the added hanger work.

It is expected that this hanger will be completed by the end of day, 6-3-80.

3. RC-H 11 4.15 >2.0 RCIC Test Return Line to Emergency Condensata Storage Tank. The line is isolated with a normally closed valve except during RCIC testing.

The line isolates during a require-ment of RCIC. The line serves no function during an accident sit-uation or during operation other than to test RCIC.

This hanger is currently being worked on.

4. SW-H 62A 4.0 3 The hanger is on the service water line from RHR heat exchanger "A" leading to the river. Six wedge anchors are to be added. The line will remain operable during the work.

5. HP-H 26 3.5 2.7 HPCI Test Return Line to Emergency Condensate Storage Tank. The line is isolated with a normally closed valve except during HPCI testing.

The line isolates during a require-ment for HPCI. The line serves no function during an accident sit-uation or during operation other than to test HPCI.

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. y Mr. Glen Madsen June 3, 1980 Page 3.

6. HP-H 31 3.5 >2.0 Same as 5 above.

If you have any questions, please contact me.

Sincerely, h _- -

L.-C. Lessor Station Superintendent Cooper Nuclear Station LCL:cg ec. R. E. Buntain J. M. Pilant I

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