ML071720273
| ML071720273 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 06/20/2007 |
| From: | Medenciy C Wolf Creek |
| To: | Christian Jacobs NRC/NRR/ADRO/DLR/REBB |
| References | |
| Download: ML071720273 (4) | |
Text
UJCNOC LICENSING FAX ID:3163644138 JUN,20'07 6:52 No.00.1 P.01 WCNOC P.O. Box 411 Burlington, KS 66839.
Date Number of pages including cover sheet To:
From: W( If Creek
~1-Phone Fax Phone CC:
2491 - -YISý -3Y74 Phone Fax Phone 620-364-8831 Y,./Aly 620-364-4138 REMARKS:___
Urgent For your review
[
Reply.
5,P-tAA, El Please comment
WCNOC LICENSING ID:3163644138 JUN 20'07.
6:52,No..001 P.02 Changes to Attachment F of the Wolf Creek L Environmental Report An error in the output of the SECPOP2000 program (whc MACCS2 input file) was discovered that caused the Wol analysis to be reworked. The re-analysis produced an in dose-risk and a small change to cost-risk. These chang used to recalculate a monetary screening value (Maximu MACR) for determining the cost-effectiveness of potentia The modified MACR (accounts for external events) bsseý results increased from $1,852,000 to $1,876,000 (1.3 per 95th percentile PRA results sensitivity case was also reca determined that the modified MACR increased from $3,5' (also a 1.3 percent increase). The changes to the modifii not impact the analysis.,
In.addition to the impact on the modified MACR, the SEC impacted the averted cost-risks that were calculated for e following table provides a summary of the Impact of using conjunction with the mean PRA results in the detailed co.;
that were performed.
cense Renewal n used to produce a Creek severe accidents
- ignificant change to d values were then n Averted Cost Risk or SAMAs.
Ion the mean PRA cent increase). The Iculated and if was 18,800 to $3,564,400
ýd MACR estimates did POP error also ach of the SAMAs. The the corrected results in t-benefit calculations Results Summary for SECPOP Error Correction (Meain PRA Results)
SAMA ID Cost of Averted Net Value Averted Net Value Change Implement-Cost-Risk (Base)
Cost-Risk (Post In Cost atlon (Base)
(Post SECPOP Effective-SECPOP Correction) ness?
Correction)
SAMA 1
$800,000
$799,882
-$118
$800,784
$784 Yes SAMA 2
$400,000
$655,712
$255,712
$656,254
$256,254 No SAMA 3
$328,000
$293,252
-$34,748
$292,442
-$35,558 No SAMA 1 -
$600,000
$243,368
-$356,632
$259,672
-$340,328 No Case 1 SAMA -
$50,000
$173,050
$123,050
$184,812
$134,812 No Case 2$
WCNOC LICENSING ID:3163644138 JUN 20'07 6:52 No.001 P.03 Results Summary for SECPOP Error Correction (Me n PRA Results)
SAMA ID Cost of Averted Net Value Averted Net Value Change Implement-Cost-Risk (Base)
Cost-Risk (Post In Cost atlon (Base)
(Post SECPOP Effective-SECPOP Correction) news?
Correction)
SAMA 5
$50,000
$54,576
$4,576
$54,698
$4,698 No SAMA 8
$565,000
$43,492
-$521,508
$43,522
-$521,478 No SAMA 13
$160,000
$111,168.
.- $38,832
$110,716
-$39,284 No SAMA 14
$1,200,000
$882,152
-$317,848
$883,116
-$316,884 No SAMA 15 -
Case 1.
$3,250,000
$404,219
-$2,845,781
$409,458
-$2,840,542 No SAMA 152
$1,000,000
$404,219
-$595,781
$409,458
-$590.542 No SAMA 16
$565,000
$22,648
-$542,352
$22,800
-$542,200 No SAMA 17
$550,000
$65,328
-$484,672
$65,388
-$484,612 No As demonstrated in the table, the corrections to the SECI minimal impact on the averted cost-risk estimates and on that was originally classified as "not cost beneficial" was beneficial" based on the use of the corrected input. Give identified as potentially cost beneficial in the 9 5 th percenti sensitivity analysis that was performed in the ER submitt; result in the identification of any new potentially cost ben(
In addition to the review of the mean PRA results quantifi necessary to examine how the 951h percentile PRA result impacted given that they were also used to identify poten SAMAs. The following table provides a summary of the c using the corrected SECPOP input in conjunction with th/
results. In this case, no SAMAs were identified as potent were not already identified in the ER submittal.
'OP input had a ly one SAMAA (SAMA 1) e-classified as "cost i that SAMA 1 was le PRA results i1, this change did not 1ficial SAMAs.
.ations, it was quantifications were
- ially cost beneficial ost benefit calculations 9 5th percentile PRA ally cost beneficial that
WCNOC LICENSING ID:3163644138 JUN 20'07 6:53.No.001 P.04 Results Summary for SECPOP Error Correction (g5 0h Peicentlle PRA Results)
SAMA ID Cost of Averted Net Value Averted Net Value Change Implement-Cost-Risk (Base)
Cost-Risk (Post In Cost atlon (Base)
(Post SECPOP Effective-SECPOP Correction) nses?
Correction)
SAMA 1
$800,000
$1,519,776
$719,776
$1,521,490
$721,490.
No SAMA 2
$400,000
$1,245,853
$845.853
$1,246,883
$846,883 No SAMA 3
$328,000
$557,179
$229,179
$555,640
$227,640 No SAMA4 -
$600,000
$462,399
-$137,601
$493,377
-$106,623 No Case 1 SAMA4 -
$50,000
$328,795
$278,795
$351,143
$301,143 No Case 2 SAMA 5
$50,000
$103,694
$53,694
$103,926
$53,926 No SAMA 8
$565,000
$82,636
-$482,365
$82,692
-$482,308 No SAMA 13
$150,000
$211,219
$61,219
$210,360
$60,360 No SAMA 14
$1,200,000
$1,676,089
$476,089
$1,677,920
$477,920.
No SAMA 15 -
$3,250,000
$768,017
-$2,481,983
$777,969
-$2,472,031 No Case 1 SAMA 15 -
Case 2
$1,000,000
$768,017
-$231,983
$777,969
-$222,031 No SAMA 16
$565,000
$43,031
-$521,969
$43,320
-$521,680 No SAMA 17
$550,000
$124,123
-$426,877
$124,237
-$425,763 No