ML20141E532
| ML20141E532 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/14/1997 |
| From: | Neri A, Tenwinker J SARGENT & LUNDY, INC. |
| To: | |
| Shared Package | |
| ML20141E462 | List: |
| References | |
| CK-MP3-03-21, CK-MP3-3-21, NUDOCS 9705210028 | |
| Download: ML20141E532 (6) | |
Text
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4 Northeast Utilities Millstone - Unit 3 Independent Corrective Action Verification Program (ICAVP) -
F Modification Review Checklist CK-MP343-21, Rev. 0 '
PRA Review Checklis.t I' 0 IN4NWKE7-
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s//v/P7 Prepared by:
Date Name Si Sh'/[f7 Approved by:
A A NE4 j
Signa %
Date Name i
IMPLEMENTATION System Modification No.
Sheet I of_
PRA REVIEW Instructions 9705210020 970516
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PDR ADOCK 05000423 P
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5 Northeast Utilities CK-MP3-03-21
. Millstone Unit 3 System No.
Modification No.
Sheet of PRA Revier This checklist shall be used for the modification review process described in PI-MP3-03 It shall be used f
for those modifications for which Probabalistic Risk Assessment (PRA) was identified by the Lead
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Verifier, in the Modification Screenmg Checklist (CK-MP3-03-02), as the affected design element. b objective of completing this checklist will be to perform a detailed review to verify that PRA was adequately addressed in the modification.
4 1.
This checklist shall be completed by a verification team (VT) member with a technical background which is appropriate for the subject.
i 2.
The Verifier (s) shall perform a technical review of the modification package, any new or revised design process documents that resulted from the modification per PI MP3-02, and any new or revised output documents that resulted from the modification when completing this checklist. For each topic for which the response is determmed in the affirmative (yes), or negative (no) the Verifier (s) shall enter a comment justifying the response 3.
The Verifier (s) shall generate a discrepancy report (DR) for any discrepancies identified during the review in accordance with Section 5.7 of PI-MP3-03.
4.
When the review is completed, the Verifier (s) shall sign and date the cover sheet of this checklist and forward it to the 12ad Verifier.
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(CK-MP3 03 21, Rev. O, Page 2)
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Northeast Utilities CK-MP3-03-21 Millstone Unit 3 System No.
Modification No.-
Sheet of PRA Review Attribute Yes Ng N/A Comment #
1.
Re-verify responses on the imtial screening in Check List CK-MP3-03-02 to ensure PRA Applicability.
2.
Mod. package or procedure is specifically cited in PRA update documentation. (if yes proceed to Check list Element 3).
3.
Revisions to system success criteria considered by review against criteria of record.
4.
Thermal hydraulic analyses that support system success criteria are updated to reflect revised system performance parameters.
5.
Major system active component mods. properly reflected in system PRA models.
6.
Major system active components included in revised common cause treatment.
7.
System dependencies properly reficcted in PRA system models.
8.
Revised component failure rates are reflected in revised component reliability calculations.
9.
New or revised test or maintenance requirement that is properly considered in the test and maintenance availability calculations.
- 10. New or revised false signal innpacts considered in the system models.
I 1.
New or revised spatial dependencies (e.g., flooding, room cooling. NPSil. rupture disk failure effects, water capacity, etc.) are properly reflected in the event sequences that quantify these effects.
(CK-MP343-21, Rev,0, Page 3)
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Sheet of PRA Revigg i
yn N/A
- 12. Degraded environment wmyc crt performance is properly reflected in the sysk:m modeling assumptions.
13.
Inventories of air, power or cooling that affect the system mission time are consistent with the established mission time or event sequence revised to reflect the revised mission times.
- 14. System boundary revisions are properly reflected in all affected system models and spatial dependency
' analyses.
- 15. Plant specific failure data is updated to reflect current components or system configurations.
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- 16. PRA systems model update performed consistent with original or existing PRA guidelines for system modeling.
- 17. Use of statesf-the-art success criteria or modeling assumptions well defined and justified as to the applicability to the model.
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- 18. Procedure revisions affecting pre-initiator human l
interactions are included in revised HRA calculations.
- 19. EOP/AOP revisions are reflected in resised HRA recovery calculations.
- 20. Important HRA calculation revisions for EOP/AOP changes are reviewed by operations personnel or in simulator emironment.
- 21. Initiating event analyses for special initiators is revised to include new or revised system / component failure modes.
- 22. Loss of offsite power initiating event re-performed fer any switchyard modifications required.
1 (CK MP343-21, Rev. O, Page 4)
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i Northeast Utilities -
CK-MP3-03-21 i
Millstone Unit 3 System No.
Modification No.
Sheet of i
PRA Review Igg N/A
- 23. System modifications for those systems Interfacing.
with the RCS are reviewed for potential impact on the ISLOCA frequency.
- 24. Modifications involving DC load additions are reviewed for impact on LOOP /SBO event sequences 1
and AC power recovery impacts.
- 25. Revisions requiring re quantificaten of the PRA model are properly performed and r.Il associated urnoi.iiity and sensitivity calculations performed
- 26.. Level 2 implications (contamment performance issues) are included in and propagated through the analysis.
d A
. Prenared by:
Name.
Signature Date I
(CK-MP343-21, Rev. O. Page 5)
CXK34321. DOC
Northeast Utilities CK-MP3-03-21 Millstone Unit 3 System No.
Modification No.
Sheet of PRA Review i
Comment Sheet Comment #
Comment j
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(CK-MP34.t21 Rev,0, Pase 6)
CXI"J-0321. DOC
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