ML092720462
| ML092720462 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 09/15/2009 |
| From: | Harrison A South Texas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NOC-AE-09002459, STI: 32531064, TAC ME1853, TAC ME1854 | |
| Download: ML092720462 (3) | |
Text
Nuclear Operating Company South Tkxs Pro/ct Elect ric Generating Station PO. Sox 28.
Wadsworth, Tceas 77483
/
September 15, 2009 NOC-AE-09002459 1 OCFR50.90 U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852 South Texas Project Units I and 2 Docket Nos. STN 50-498, STN 50-499 Withdrawal of Proposed Change to Technical Specification 3.7.7, "Control Room MakeuD and Cleanup Filtration Systems" (TAC Nos. MEl 853 and ME 1854)
Reference:
Letter from C. T. Bowman, STPNOC, to NRC Document Control Desk dated July 29, 2009, License Amendment Request to Revise the Action Requirement for an Inoperable Control Room Envelope Boundary and to Revise the Application of Risk-Managed Technical Specifications to Technical Specification 3.7.7, "Control Room Makeup and Cleanup Filtration Systems" (NOC-AE-09002441)
STP Nuclear Operating Company (STPNOC) hereby withdraws the referenced proposed amendment to South Texas Project Unit I Operating License NPF-76 and the Unit 2 Operating License NPF-80. The proposed amendment would have:
- Provided for shutdown actions if the required actions for an inoperable control room envelope boundary were not met,
- Added a note to the required action for an inoperable control room envelope boundary to clarify that the boundary is not a required system, subsystem, train, component, or device that depends on a diesel generator as a source of emergency power, and
- Revised the application of Risk-Managed Technical Specifications (RMTS) by using a bounding analysis to apply the Configuration Risk Management Program (CRMP) to the dose mitigation function for Technical Specification (TS) 3.7.7.
RMTS is currently approved for application of the cooling function to TS 3.7.7. However, the application of RMTS to the cooling function is currently administratively restricted to one inoperable train of the Control Room Makeup and Cleanup Filtration Systems following discovery that the dose mitigation function has some dependency on the cooling capability.
STI: 32531064I
NOC-AE-09002459 Page 2 During the review of the STPNOC application for acceptability, the Nuclear Regulatory Commission staff informed STPNOC that the RMTS can not be applied in the manner intended in the proposed amendment. STPNOC plans to review other options for resolving the issues regarding application of RMTS to TS 3.7.7 and resubmit another license amendment request at a later date.
There are no commitments in this letter.
Please contact Ken Taplett at (361) 972-8416 or me at (361) 972-7298 if you have any questions regarding this matter.
CA o*.
Harrison kjt/
NOC-AE-09002459 Page 3 cc:
(paper copy)
(electronic copy)
Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd, Suite 400 Arlington, Texas 76011-4125 Mohan C. Thadani Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North (MS 8B IA) 11555 Rockville Pike Rockville, MD 20852 Senior Resident Inspector U. S. Nuclear Regulatory Commission P. 0. Box 289, Mail Code: MN116 Wadsworth, TX 77483 A. H. Gutterman, Esquire Morgan, Lewis & Bockius LLP Mohan C. Thadani U. S. Nuclear Regulatory Commission Kevin Howell Catherine Callaway Jim von Suskil NRG South Texas LP Ed Alarcon J. J. Nesrsta R. K. Temple Kevin Pollo City Public Service Jon C. Wood Cox Smith Matthews C. Mele City of Austin Richard A. Ratliff Texas Department of State Health Services Alice Rogers Texas Department of State Health Services C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704