ML20196C548

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Comment Supporting Proposed Rule 10CFR50 Re leak-before-break (LBB) Technology.Believes That Extension of LBB Technology to Performance Requirements for Emergency Core Cooling Sys Appropriate
ML20196C548
Person / Time
Site: Clinton Constellation icon.png
Issue date: 06/07/1988
From: Hall D
ILLINOIS POWER CO.
To: Chilk S
NRC OFFICE OF THE SECRETARY (SECY)
References
FRN-53FR11311, RULE-PR-50 53FR11311-00001, 53FR11311-1, 53FR1131100001, DPH-0158-88, DPH-158-88, NUDOCS 8807010131
Download: ML20196C548 (1)


Text

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June 7 D0048&G A 'H e en SRANtM Mr. Samuel J. Chilk Secretary of the Commission U. S. Nuclear Regulatory Commission Washington, D.C.

20555 Attention:

Docketing and Service Branch

Subject:

Comments on Federal Register Notice Regarding Leak-Before-Break Technology

Dear Sir:

Illinois Power Company concurs with the NRC proaosed Federal Register, dated April 6,pages 11,311-12 of the regulatory changes described on 1988, regarding leak-before-break (LBB) technology.

It is believed that the extension of LBB technology to the performance requirements for emergency core cooling systems and the environmental qualification of safety related equipment is appropriate.

Due to limited operating experience at our Clinton Power Station, we have not identified any specific examples where the use of the existing double ended-guillotine pipe break criteria leads to less reliable overall performance.

It is believed, however, that such changes may generally improve safety as described and should be further investigated.

Such a requirement change should also make it possible to simplify operating plants and encourage important design improvements.

Sincerely yours, D.

. Hall Vice President DLH/krm 8007010131 000607 PDR l' R 50 D3FR11311 PI)H

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