BYRON 2006-0016, 2005 Regulatory Commitment Change Summary Report

2005 Regulatory Commitment Change Summary Report

ML060460400
Person / Time
Site:	Byron
Issue date:	02/15/2006
From:	Hoots D Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BYRON 2006-0016
Download: ML060460400 (5)

Text

Exelon Generation Company, LLC www.exeloncorp.com Exekrn Nuclear 5 .

Byron Station 4450 North German Church Road Byron, IL 610109794 February 15, 2006 LTR: BYRON 2006-0016 File: 1.10.0101 U S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Byron Station, Units I and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos STN 50-454 and SIN 50-455 Subject 2005 Regulatory Commitment Change Summary Report Please find enclosed the Regulatory Commitment Change Summary ReporV for Byron Station This report contains summary information from January 1, 2005, through December 31 2005 Revisions to docketed regulatory commitments were processed using Nuclear Energy Institutes document NEI 99-04, Guidelines for Managing Nuclear Regulatory Commission (NRC) Commitment Changes, Revision 0 If you have any questions concerning this report, please contact William Grundmann, Regulatory Assurance Manager, at (815) 406-2800 Respectfully, David M. Hoots Site Vice President Byron Station DMHITLF/rah Attachment

ATTACHMENT BYRON STATION REGULATORY COMMITMENT CHANGE

SUMMARY

REPORT FOR 2005 Original Document:

Commitment 454-251-90-07500 AT 10643-01 CornEd Response to NRC Generic Letter 89-13 dated January 29, 1990 Subject of Change:

In GL 89-13, the SX lines and heat exchanger to the motor driven Aux Feed Pump is normally stagnant. Operation of the pump flushes the lines and brings chemically treated water to the piping and heat exchanger. The Commitment for periodic operation of the motor driven Aux Feed Pump was revised to reflect the change in the flow regime from intermittent to continuous.

Basis:

The removal of the ISXIO1A valve through Engineering Change 79647 allows for continuous flow of SX water through the piping and heat exchanger. Contingent on acceptable results, the heat exchanger will be inspected every refueling outage until three cycles have been completed.

Status:

The commitment was revised under Commitment Change Number 05-001.

Oriçiinal Document:

Commitment 455-I 80-97-SCAQ-00001 (AR. 11003) Licensee Event Report 97-00 1-00 05000455 Unit 2 Containment Drain System clogged due to debris Subject of Change:

LER 97-0001 documented a blockage of the containment drain flow control device. The cause of the event was determined to be missing or deteriorating drain opening bar grates causing debris to enter the system and block the flow control device.

The intent of the Commitment was to verify the system was able to pass flow and free of any blockages.

Basis:

The revised commitment more accurately and appropriately describes the station actions being performed to ensure the containment floor drain system will not inhibit flow and ensure RCS leakage is transported to the unidentified leakage collection system for accurate detection. The revised commitment further ensures the 377 elevation floor drains are verified to be able to pass flow for RCS leakage detection.

Status:

The commitment was revised under Commitment Change Number 05-003.

Original Document:

Commitment NTS 454-251-90-13800 (AR 10675-01) NRC EQ Audit Report 50-454-88003 dated August 3, 1990.

Subject of Change:

BAP 1000-3 Quality Assurance Reject Tags was revised to reflect a new methodology for dealing with rejected parts. This action was taken to address the inappropriate installation of non-safety related diaphragms in the pressurizer (RY) power operated relief valves (PORVs). The commitment will be eliminated with the cancellation of BAP 1000-3. The responsibility of controlling non-conforming items will be transferred to new procedure MA-AA-716-001 Non-Conforming Material Identification and Storage.

Basis:

The work execution process has been significantly strengthened over the ensuing 17 years, including correct part selection during the work planning/scheduling process. Human performance tools have been implemented and personnel understanding of correct part selection is an integral part of worker and supervisor fundamentals. These changes have resulted in acceptable performance levels.

Status:

The commitment was deleted under Commitment Change Number 05-007.

Original Document:

Commitment NTS 454-251-90-07500 (AR 10643-01) CornEd Response to NRC Generic Letter 89-13 dated January 29, 1990 Subject of Change:

In GL 89-13, the SX lines and heat exchanger to the motor driven Aux Feed Pump is normally stagnant. Normal operation of the pump flushes the lines and brings chemically treated water to the piping and heat exchanger. A modification has removed the 2SXIOIA valve, allowing for continuous SX flow through the 2A AF pump heat exchanger. This eliminates the requirement for periodic flushing.

Basis:

The removal of the 2SXIOIA valve will allow for continuous flow through of SX water through the piping and heat exchanger. The plant modification was made under Engineering Change 79657. Contingent on acceptable results, the heat exchanger will be inspected every refueling outage until three cycles have been completed.

Status:

The commitment was deleted under Commitment Change Number 05-009.