ML19325E733

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Responds to Generic Ltr 88-20,Suppl 1.Util Will Perform New Level III PRA W/External Events Utilizing Methods Described Under Section 4,Method 1 of NRC 881123 Ltr.Addl Time Requested Beyond 3 Yr Period Identified in Generic Ltr
ML19325E733
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 10/31/1989
From: Morris K
OMAHA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-88-20, LIC-89-930, NUDOCS 8911080363
Download: ML19325E733 (3)


Text

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  • l Omahs Public Power District l 1623 Hamey Omaha. Nebnaka 68102 2247 402/536 4000 l

October 31, 1989 LIC 89 930 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station Pl 137 Washington, DC 20555

References:

1. Docket 50 285 l
2. Letter from NRC (D. M. Crutchfield) dated November 23, 1988 i I

(Generic Letter 88 20)

3. Letter from NRC (J. G. Partlow) dated August 29,19W ]

(Generic Letter 88 20 Supplement 1)  !

Gentlemen: l i

SUBJECT:

Proposed Program Response to Generic letter 88 20 Supplement No. 1 I i

In response to Generic Letter 88-20 Sup)1ement 1, Omaha Public Power District I (OPPD) will perform a new Level III Pro)abilistic Risk Assessment (PRA) with  !

external events for the Fort Calhoun Station Unit No.1. Prior to this  !

analysis no PRA has been performed for Fort Calhoun. The PRA will be performed I utilizing the methods described under Section 4, Method 1, of Reference 2.  !

Specifically, we will be utilizing codes and methods supplied by Science  ;

Application International Corporation (SAIC) consistent with NUREG/CR 2300.

l This analysis is intended to be a full scope, comprehensive study that will  !

utilize an extensive in house PRA knowledgeable staff in conjunction with j personnel supplied by SAIC. In order to maximize OPPD staff participation as  ;

recommended by Generic Letter 88-20, our projected plan consists of utilizing  !

an estimated 22,000 consultant manhours and 24,000 OPPD PRA staff manhours.

Because our plan significantly exceeds the requirements of Generic Letter  !

88 20, additional time is recuested beyond the three year period identified in i the Generic letter, in accorcance with the statement issued in Section 11 of Generic Letter 88-20 which reads as follows. ,

r

" Finally, those licensees 31anning to perform a new Level 11 or Level Ill  !*

PRA may need more time. Tie NRC staff will consider requests for additional time for such an examination." ,

i 8911080363 891031 DR ADOCKO$00g5

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! U. S. Nuclear Regulatory Commission l LIC 89 955 Page 2 Our proposed schedule, as shown below for the major milestones, is an aggressive one for a project of this magnitude:

1. Initial Level I models developed - 5/1/91
2. Limited Level 11 models developed and interfaced with Level 1 - 4/1/92 l
3. Final Level I/11/111 models 5/1/93  !

, 4. Final models with external events added 9/1/93 s

5. Submittal to NRC 12/1/93 If you should have any questions regarding our proposed plan, please do not hesitate to contact us.

Sincerely,

. J. Morris Division Manager t Nuclear Operations KJM/pje c: LeBoeuf, Lamb, Leiby & MacRae i R. D. Martin, NRC Regional Administrator A. Bournia, NRC Project Manager P. H. Harrell, NRC Senior Resident inspector i

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UNITED STATES OF AMERICA  !

NUCA. EAR REGULATORY COMMISSION  !

I f

l- In the Matter of i

Omaha Public Power District Docket No. 50 285 i (Fort Calhoun Station Unit No. 1)  ;

i l

F AFFIDAVIT  ;

i K. J. Morris, being duly sworn, hereby deposes and says that he is the Division l Manager - Nuclear Operations of the Omaha Public Power District; that as such l he is duly authorized to sign and file with the Nuclear Regulatory Comm:ssion {

the attached information concerning the response to NRC Generic Letter No.

88 20; that he is familiar with the content thereof; and that the matters set I forth therein are true and correct to the best of his knowledge, information,  !

and belief.  ;

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K.'J/,Aorris Division Manager j Nuclear Operations j i I 1

i STATE OF NEBRASKA  !

ss l COUNTY OF DOUGLAS Subscribed and sworn to before me, a Notary Public in and for the State of l Nebraska on this - p s r , day of October, 1989.  ;

Madm -

i N'otary Pilblic GENiML NOIART sta g inco {

J.T. GLEAson L

% h E4 Mr & tRC j.

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