ML100131278: Difference between revisions
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| issue date = 01/13/2010 | | issue date = 01/13/2010 | ||
| title = Draft RAI on Proposed Amendment to Convert TS to ITS Format | | title = Draft RAI on Proposed Amendment to Convert TS to ITS Format | ||
| author name = Tam P | | author name = Tam P | ||
| author affiliation = NRC/NRR/DORL/LPLIII-1 | | author affiliation = NRC/NRR/DORL/LPLIII-1 | ||
| addressee name = Riste G | | addressee name = Riste G | ||
| Line 9: | Line 9: | ||
| docket = 05000305 | | docket = 05000305 | ||
| license number = DPR-043 | | license number = DPR-043 | ||
| contact person = Tam P | | contact person = Tam P | ||
| case reference number = TAC ME2139 | | case reference number = TAC ME2139 | ||
| document type = E-Mail | | document type = E-Mail | ||
Revision as of 13:45, 11 July 2019
| ML100131278 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 01/13/2010 |
| From: | Tam P Plant Licensing Branch III |
| To: | Riste G Dominion Energy Kewaunee |
| Tam P | |
| References | |
| TAC ME2139 | |
| Download: ML100131278 (2) | |
Text
Accession No. ML100131278
From: Tam, Peter Sent: Wednesday, January 13, 2010 1:49 PM To: Jerry Riste (gerald.o.riste@dom.com); 'Jack Gadzala'; Craig D Sly; Thomas L Breene Cc: Cusumano, Victor; Waig, Gerald; Sheng, Simon
Subject:
Kewaunee - Draft RAI on the 8/24/09 application for ITS conversion (TAC ME2139) Jerry: This is regarding Kewaunee's 8/24/09 application (Accession No. ML092440398) for amendment to convert the TS from custom to standard (ITS) format.
Page 49 of Attachment 1, Volume 9, specified actions to be taken when Limiting Condition for Operation (LCO) 3.4.3 regarding pressure-temperature (P-T) limits is not met. These actions are identified as "M02," which stands for more restrictive changes. The current Technical Specifications (CTS) 3.0.c, "Limit Conditions for Operation," requires action to be initiated within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and to be in hot standby (equivalent to Mode 3) within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, hot shutdown (equivalent to Mode 4) within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and cold shutdown (equivalent to Mode 5) within the subsequent 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. These CTS 3.0.c actions will result in cold shutdown whenever the P-T limits are exceeded. However, the improved TS (ITS) version on Page 49 provides a path to continue the heatup or stay at power operation if the parameters are restored to within limits in 30 minutes and the reactor coolant system is determined to be acceptable for continued operation (in 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />). Comparing the CTS and ITS actions, the NRC staff concludes that the ITS actions are less restrictive than the CTS actions, not more restrictive as claimed by the submittal. Please clarify. If the LCO was severely violated but was restored in 30 minutes, please (1) discuss the steps to be taken to ensure that acceptability of continued operation will be determined within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (the CTS would have completed the shut down within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> of the violation), and (2) discuss any plant procedure to identify the severity of the short excursion promptly before a formal evaluation is completed.
Please set up a conference call with me to discuss the above with our reviewers. At this time this e-mail does not formally convey an NRC staff position, and does not formally request for additional information. The above question will be dispositioned in the proposed conference call.
Peter S. Tam Senior Project Manager (for Kewaunee and Monticello) Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Tel. 301-415-1451 E-mail Properties Mail Envelope Properties ()
Subject:
Kewaunee - Draft RAI on the 8/24/09 application for ITS conversion (TAC ME2139)
Sent Date: 01/13/2010 1:36:07 PM Received Date: 01/13/2010 1:49:00 PM From: Tam, Peter
Created By: Peter.Tam@nrc.gov
Recipients:
gerald.o.riste@dom.com (Jerry Riste (gerald.o.riste@dom.com)) Tracking Status: None jack.gadzala@dom.com ('Jack Gadzala')
Tracking Status: None craig.d.sly@dom.com (Craig D Sly)
Tracking Status: None thomas.l.breene@dom.com (Thomas L Breene)
Tracking Status: None
Victor.Cusumano@nrc.gov (Cusumano, Victor) Tracking Status: None Gerald.Waig@nrc.gov (Waig, Gerald)
Tracking Status: None Simon.Sheng@nrc.gov (Sheng, Simon)
Tracking Status: None
Post Office:
Files Size Date & Time
MESSAGE 14858 01/13/2010
Options Expiration Date:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False
Sensitivity: olNormal Recipients received: