ML20100Q442

Responds to NRC Re Violations Noted in Insp Rept 50-483/95-12 on 951127.Corrective Actions:Procedure EPIP-ZZ-00212,revised to Clarify Procedural Entry Conditions Used to Initiate Protective Action Recommendations

ML20100Q442
Person / Time
Site:	Callaway
Issue date:	03/04/1996
From:	Schnell D UNION ELECTRIC CO.
To:	NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ULNRC-3340, NUDOCS 9603110640
Download: ML20100Q442 (4)

Text

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I901 Chouteilu hvenue Post Offce Box 149 i

St Loat M,sscun 63166 314-554 2650

l. INION oo"*!s r. scsne11 Etscraic s "',c;,,~c ?'c8.~cc r,c uarcu4,1998 Document Control Desk Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop PI-137 Washington, DC 20555 ULNRC-3340 Gentlemen:

AMENDED REPLY TO EXERCISE WEAKNESS

~ INSPECTION REPORT NO. 50-483/95012 CALLAWAY PLANT l

References:

1. Inspection Report No. Se-483/95012 dated November 27,1995

2. ULNRC-3303, dated December 15,1996 This supplements our response to Mr. Thomas P. Gwynn's letter dated November 27, 1995, which transmitted an Exercise Weakness for events discussed in Inspection Report 50-483/95012. Our amended response to the exercise weakness is presented in the attachment.

None of the material in the response is considered proprietary by Union Electric.

If you have any questions regarding this response, or if additiona' information is required, please let me know.

Very truly yours, i

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Donald F. Schnell i

i DFS/tmw

Attachment:

1) Amended Response to Exercise Weakness

' '9603110640 950304 PDR ADOCK 05000403 gji O

PDR p

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ULNRC-3340 I

March 4,1996 l

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i cc: Mr. L. J. Callan Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Resident Inspector Ms. Kristine M. Thomas (2 copies)

Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 13-E-21 Washington, DC 20555 Manager, Electric Department Missouri Public Service Commission PO Box 360 Jefferson City, MO 65102 l

Mr. Thomas A. Baxter Shaw, Pittman, Potts, & Trowbridge 2300 N. Street N.W.

Washington, DC 20037 l

l Manager, Plant Support Wolf Creek Nuclear Operating Corporation PO Box 411 Burlington, KS 66839 l

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Atychment to ULNRC-3340 March 4,1996 Page1 Addendum to Exercise Weakness Reply Inspection Report N. 50-483/95012 Callaway Plant (Ref. ULNRC-3303)

This letter provides clarification of corrective steps to enhance performance stated in ULNRC-3033 dated December 15,1995. ULNRC-3033 was submitted in response to Mr. Thomas P. Gwynn's letter dated November 27,1995, which transmitted an Exercise Weakness for events discussed in Inspection Report 50-483/95012.

Corrective steps to enhance performance outlined in ULNRC-3033 stated in part:

Procedure EIP-ZZ-00212, " Protective Action Recommendations " will be revised to clarify the procedural entry conditions used to initiate protective action 1

recommendations. The procedure will also be revised to implement the protective action recommendations which afford the higher level ofprotection when dose projections

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andplant conditions do not result in the same protective action recommemiations.

l We still intend to clarify procedure EIP-ZZ-00212 guidance for implementation of protective action recommendations which afford the higher level of protection when plant j

conditions and dose projections are inconsistent. However, upon further review, we have determined the entry requirements for EIP-ZZ-00212 are appropriate and do not require revision. The confusion stemmed from a problem with the exercise scenario rather than a i

procedure inadequacy. The Reactor Coolant System (RCS) sample results provided in the scenario were not supported by other indicators of core damage such as core exit thermocouple readings, containment radiation readings, etc. This is an ongoing challenge with simulator driven exercises. It is difficult to allow freedom of action by Operators in the simulator control room and simultaneously support a scenario which results in severe wre damage. Operator actions mitigate the severity of the accident, thereby preventing the simulator from producing indicators that support those provided by exercise controllers. In this case, it would have been more appropriate for the exercise controllers to intervene to ensure realistic data was used for evaluation of plant conditions. This issue will be included in the contrehr briefing material for future drills and exercises.

As for the expectations for Protective Action Recommendations (PARS) upgrade notifications, EIP-ZZ-00201, " Notifications" will be revised as stated in ULNRC-3303.

The completion date for actions specified in response to the exercise weakness remains April 15,1996.

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Attachment to ULNRC-3339 March 4,1996

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bec: G. L. Randolph J. V. Laux R. D. Affolter A. C. Passwater/D. E. Shafer (470)

NSRB (G. A. Hughes/P.L. Reynolds)(470)

M. P. Barrett (100)

S. G. Wideman (WCNOC)

K. A. Carroll (NOVS only)

H. D. Bono M. A. Reidmeyer M. S. Evans R. E. Farnam C. C. Graham DFS Chrono A160.0761 (QA Record)(CA-460)

A170.0103 (9600l) (QA Record) (CA-460)

A170.0103 (96001 - QA Department Copy) (CA-460)

E210.0001 l

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