ML13358A206
| ML13358A206 | |
| Person / Time | |
|---|---|
| Issue date: | 01/09/2014 |
| From: | Jennifer Davis NRC/NRR/DPR/MSD |
| To: | Joseph E Pollock Nuclear Energy Institute |
| Kratchman J, NRR/DPR, 415-5112 | |
| References | |
| EA-12-049 | |
| Download: ML13358A206 (2) | |
Text
January 9, 2014 Mr. Joseph E. Pollock, Vice President Nuclear Operations Nuclear Energy Institute 1201 F Street NW, Suite 1100 Washington, DC 20004
Dear Mr. Pollock:
The U.S. Nuclear Regulatory Commission (NRC) staff has considered the technical information transmitted to the NRC by the Nuclear Energy Institute (NEI) on behalf of the Boiling Water Reactor Owners Group (BWROG) entitled BWR Containment Venting. This technical report was made available in an NEI letter dated November 21, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13352A057). The purpose of this report is to provide information in support of the ongoing NRC audits. In particular, the report discusses changes to containment venting strategies based on Revision 3 to the BWROGs emergency procedure guidelines/severe accident guidelines (EPG/SAG) that were developed based on lessons learned from Fukushima. The NRC staff interacted with your staff and external stakeholders during the development of this technical position.
The NRC staff agrees that the changes to the containment venting strategies as described in the BWROG information report are acceptable for use as part of strategies proposed in response to Order EA-12-049, provided that licensee implementation is in compliance with normal change processes for plant emergency procedures and provided that plant-specific evaluations support the use of the revised strategies. The BWROG paper addresses the venting strategy on a generic basis, but plant-specific implementation relies on such items as the capabilities of the installed vent path, net positive suction head for the reactor coolant system injection pumps, and guidance to prevent negative pressure in containment. The NRC staff will evaluate a licensees application of containment venting strategies in its development of the final Safety Evaluation documenting compliance with NRC Order EA-12-049.
Sincerely,
/RA/
Jack R. Davis, Director Mitigating Strategies Directorate Office of Nuclear Reactor Regulation
ML13358A206 *concurrence via e-mail OFFICE NRR/MSD/PM NRR/MSD/LA NRR/MSD/BC NRR/MSD/SA NRR/MSD/PM* NRR/MSD/D NAME JKratchman SLent SBailey EBowman JKratchman JDavis DATE 12/24/13 1/10/13 01/09/14 01/09/14 01/09/14 01/09/14