ML13333A573
| ML13333A573 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/04/1987 |
| From: | Medford M SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8711100341 | |
| Download: ML13333A573 (7) | |
Text
Southern California Edison Company P 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD, CALIFORNIA 91770 M.O.MEDFORD TELEPHONE MANAGER OF NUCLEAR ENGINEERING (818) 302-1749 AND LICENSING November 4, 1987 U. S. Nuclear Regulatory Commission Attention:
Document Control Desk Washington, D.C. 20555 Gentlemen:
Subject:
Docket No. 50-206 Fifth Edition of the Integrated Implementation Schedule (IIS)
San Onofre Nuclear Generating Station Unit 1
Reference:
Letter, M. 0. Medford, SCE, to NRC, dated March 23, 1987 The fourth edition of the IIS was submitted by the referenced letter. The IIS Program Plan required by License Condition 3.3, specifies that SCE provide semi-annual updates of backfit schedules to the NRC. Accordingly, enclosed is the fifth edition of the IIS.
If there are any questions on the enclosure or if you require additional information, please let me know.
Very truly yours, Enclosure cc:
J. Bradfute, NRR Project Manager, San Onofre Unit 1 J. B. Martin, Regional Administrator, NRC Region V F. R. Huey, NRC Senior Resident Inspector, San Onofre Units 1, 2 and 3 D71100341 871104 PDR A DOCK 810 P
O 05000206 PDR
Enclosure INTEGRATED IMPLEMENTATION SCHEDULE SAN ONOFRE NUCLEAR GENERATING STATION, UNIT 1 Fifth Edition November, 1987 Introduction License Condition 3.3, "Integrated Implementation Schedule", requires SCE to follow the IIS Program Plan ("Plan").
The Plan specifies that periodic schedule updates be submitted to the NRC along with specific information regarding progress in implementing NRC requirements, changes since the previous report, reasons for schedule changes and the expected percentage allocation of resources on regulatory vs. betterment projects. This document is the fifth edition of the IIS which provides that information.
Progress in Implementing NRC Requirements Since submittal of the last IIS update on March 23, 1987, SCE completed a scheduled mid-cycle outage. During the outage extensive maintenance was performed and progress was made on certain IIS projects. The Magnacraft Relay Replacement, Automatic Vent System for the Boric Acid System, Control Room HVAC Duct Heaters and Vital Bus 4 Uninterruptible Power Supply Projects were all completed.
Changes Since Last Edition Two projects have been added to Schedule B of the IIS. One project is to improve the Steam/Feedwater Flow Mismatch Trip in the Reactor Protection System and the other is to modify the Standby Emergency Diesel Generators to incorporate slow start capability. The first project has been scheduled for implementation during Cycle X and the second during Cycle XI.
An indication of one ongoing Evaluation has been added to Schedule B for the Seismic Qualification of Electrical Equipment. This evaluation will be performed in response to Generic Letter 87-02. Submittal of the CRDR Final Summary Report has been deferred due to necessary reallocation of manpower to support recent outages in conjunction with unprojected delays in achieving project scope milestones. Recent plant outages have required manpower support from key CRDR team members which resulted in delay of the CRDR and preparation of the CRDR report. In addition, several supplementary evaluations to investigate alternative solutions were requested by Station Operations management. These evaluations resulted in optimal solutions to several of the Human Engineering Discrepancies (HED's) with consideration to both cost and associated benefits. The extended submittal date will also provide sufficient time for an interactive company review of the final summary report prior to submittal. It is currently forecast that all project milestones will be completed and the CRDR Final Summary Report submitted by December 15, 1987.
-2 Several projects have been rescheduled to reflect their current rank determined by the Westinghouse Analytic Ranking Process. The only Schedule A modification, ATWS, has been rescheduled to Cycle XI due to higher priority work on Schedule B which has been scheduled for Cycle X. Since this is a Schedule A project, its due date is established by Rule, Regulation or Order.
We are rescheduling the project within the provisions of the rule as explained by NRC letter from Richard F. Dudley to Kenneth P. Baskin dated July 24, 1987. The Automatic Termination of Safety Injection Pumps on Low RWST Level has been rescheduled from Cycle XI to Cycle X due to its higher safety ranking. The On-Site Toxic Gas Modification and the IST modifications have been rescheduled to Cycle XI to make room for this higher priority project.
With the addition of the Steam/Feedwater Flow Mismatch Trip Project to Cycle X and the TDI Slow Start Modifications to Cycle XI, several other minor projects have been deferred to Cycle XII.
These include:
CVCS Valves MOV-LCV-1100B, C, D controls modifications, Waste Gas Decay Tank Modifications, Undervoltage Relays for Protection from Degraded Grid Voltage, Removal of Automatic Reactor Coolant Pump Trip on Safety Injection and the Addition of Synchrocheck Relays to Emergency Diesel Generators.
Expected Allocation of Resources for Upcoming Outage The refueling/backfit outage for Cycle X of plant operation is expected to have resources allocated approximately 70% to regulatory projects and 30% to betterment projects. This allocation reflects a balancing of resource allocation following the last refueling/backfit outage which was approximately 90% regulatory work.
Updated Schedules Schedules A, B and C are attached.
0594P:GEH
ATTACHMENT IIS SCHEDULE A (RULE, REGULATION OR ORDER)
CYCLE X NONE CYCLE XI ANTICIPATED TRANSIENTS WITHOUT SCRAM DIVERSE TURBINE TRIP EVALUATION FSA UPDATE DECEMBER 30, 1988
IIS SCHEDULE B (NRC COMMITMENTS AND OTHER REQUIREMENTS)
CYCLE X AUTOMATION OF THIRD AUXILIARY FEEDWATER PUMP STEAM/FEEDWATER MISMATCH TRIP AUTOMATIC TERMINATION OF SAFETY INJECTION PUMPS ON Low RWST LEVEL REGULATED INSTRUMENT BUSES INDICATING LIGHTS REACTOR CAVITY SAFETY CAGE (OSHA)
AUTOMATIC VENT SYSTEM FOR BORIC ACID SYSTEM MAGNACRAFT RELAY REPLACEMENTS
- CONTROL ROOM HVAC DUCT HEATERS
- VITAL BUS 4 UNINTERRUPTIBLE POWER SUPPLY
- CYCLE XI ON-SITE TOXIC GAS SOURCES MODIFICATIONS UPGRADE OF CORE EXIT THERMOCOUPLES FOR DETECTION OF INADEQUATE CORE COOLING SLOW START MODIFICATION TO EMERGENCY DIESEL GENERATORS CONTROL ROOM AND TECHNICAL SUPPORT CENTER HVAC UPGRADES STEEL DECKING UNDER TURBINE BUILDING NORTH EXTENSION IN-SERVICE TESTING INSTRUMENTATION
- THESE PROJECTS WERE COMPLETED DURING THE RECENT MID-CYCLE OUTAGE.
IIS SCHEDULE B (NRC COMMITMENTS AND OTHER REQUIREMENTS) (CONTINUED)
CYCLE XII REMOVAL OF AUTOMATIC REACTOR COOLANT PUMP TRIP ON SAFETY INJECTION CVCS VALVES MOV-LCV-1100 B, C, D CONTROLS MODIFICATIONS ADDITION OF SYNCROCHECK RELAYS TO EMERGENCY DIESEL GENERATORS UNDERVOLTAGE RELAYS FOR PROTECTION FROM DEGRADED GRID VOLTAGE WASTE GAS DECAY TANK MONITORING INSTRUMENTATION EVALUATIONS CONTROL ROOM DESIGN REVIEW DECEMBER 15, 1987 SEISMIC QUALIFICATION OF ONGOING ELECTRICAL EQUIPMENT
IIS SCHEDULE C (BETTERMENT PROJECTS)
CYCLE X NUCLEAR INSTRUMENTATION SYSTEM REPLACEMENT TURBINE VIBRATION DETECTION INSTRUMENTATION RADIATION MONITOR SV-99 UPGRADE MODIFICATIONS TO SUPPORT FUEL TRANSSHIPMENT CONTAINMENT SPRAY PIPING REPLACEMENT CYCLE XI CONTROL ROOM INSTRUMENT RACKS REPLACEMENT