ML13330B459
| ML13330B459 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 12/31/1988 |
| From: | Southern California Edison Co |
| To: | |
| Shared Package | |
| ML13330B457 | List: |
| References | |
| PROC-881231, NUDOCS 8901190311 | |
| Download: ML13330B459 (13) | |
Text
SQE* DESIGN BASES DOCUMENTATION (DBD)
PROGRAM PLAN Initial Edition December 1988 8901190311 890109 PDR ADOCK 05000206 G
.PNU
SCE's DESIGN BASES DOCUMENTATION & RECONSTITUTION -
PROGRAM PLAN I.
INTRODUCTION The purpose of SCE's San Onofre Design Bases Documentation (DBD) and Reconstitution Plan is to outline a program to confirm and document SONGS' nuclear power plant design bases.
This process will establish a plant design baseline and associated documents from which the evaluation of future plant changes and associated safety evaluations are more effectively accomplished.
A Design Bases Documentation Program will improve the SCE technical staff's design bases understanding.
The program will integrate the plant design criteria with existing design and as-built information.
Over a longer term, the output of such a program can assist in configuration management.
The program will provide detailed design bases information that reflects plant design at the time of the operating license issuance with subsequent design modifications incorporated., With the development of the base scope, a significant data base of essential design information is established.
Program data will be controlled to keep its pedigree. Such data will be accessible to SCE's operating, maintenance, oversight groups and engineering/technical staffs.
II.
OBJECTIVES A)
Consolidate basic design input into a single source; B)
Minimize exposure to plant shutdowns/violations caused by errors in preserving and understanding the design bases; C)
Preserve corporate memory and understanding of the underlying technical rationale for the plant design.
Minimize the affect of normal attrition of key individuals within SCE, the NSSS Supplier, and other key contractor personnel; D)
Enhance the quality of design work through improved accuracy, accessibility, definition, and understanding of the design basis; E)
Provide a controlled document or source which communicates basic design input to organizations who must follow design requirements in fulfilling their function; and F)
Provide condensed technical information used to improve the quality of safety evaluations of plant changes; and improve the process and thoroughness of 10 CFR 50.59 evaluations.
-2 III. SUB-OBJECTIVES It is necessary to maintain the data in a form that is usable and accurate. Sub-objectivesin this area are to:
o Document and address design data base omissions; 0
Provide procedures that ensure information pertinent to -the design bases (such as correspondence, and procedure changes) are properly reviewed, that appropriate information is incorporated, and that the documentation is current; o
Provide a cross-index to lower tier design data base documents to enhance retrievability by key users; and a'
Improve the effectiveness and efficiency of plant design change process through use of an organized data base that both reduces and streamlines design document searches.
IV.
SCOPE AND LEVEL OF DETAIL The scope of this program is provided in the schedule of plant systems and topical areas listed in Appendix A.
For safety related systems and all topical areas, extensive documentation will be provided. Less extensive documentation is planned for the remaining, non-safety related systems.
Open items and deficiencies identified during the process of preparing design bases documents (DBDs) are planned for resolution'in a controlled, prioritized program as the DBD effort progresses.
Section VI, herein, discusses open items in more detail.
V.
VERIFICATION Each design bases document will be verified through the use of an interdisciplinary review process -similar to that performed for design and procedures changes.
Additional verification requirements will be developed through our experience with the pilot program discussed in Section VII.
-3 VI.
OPEN ITEMS The program is expected to develop a number of open items as DBDs are prepared, including:
o Documents are not readily retrievable, a
Data and/or documents cannot be located, 0
Internal contradictions, O
Errors, and a
Changing perceptions of documentation adequacy.
A controlled listing of open items will be prepared during the process of drafting the design bases documents.
In accordance with our Topical Quality Assurance Manual, open items will be reviewed for inclusion in SCE's Mon-Conformance Report Program.
Thus, those open items determined to be non conformances will:
o Be assessed for reportability as required by 10 CFR 50; 0
Be assessed for impact on operability; and o
Cause and corrective action appropriately documented, etc.
All other open items will be separately tracked through resolution.
All open items will be listed in each DBD at issuance.
VII. PILOT DBD SELECTIONS To adequately evaluate and confirm the initial DBD Program path SCE has chosen to follow, SCE will initially develop four pilot DBDs.
At least two of these pilot DBDs will be subjected to internal validations using a process similar to the NRC's Safety System Functional Inspections (SSFIs).
Following these validation efforts, the program will be revised, as.appropriate, and development of production DBDs will begin. The prime selection factors for the 1989 planned Pilot DBDs, are as follows:
o Produce Pilot DBDs that are representative, in both their technical and administrative aspects; a
Select Pilot DBDs that address recent issues such as the Units 2/3 Component Cooling Water (CCW) System task force effort;
-4 o
Select a representative number of systems in all units that also provide a typical crossection of engineering disciplines of primary interest to an operating plant; o
Include at least one generic (Topical) pilot DBD sample to address the inherent differences which exist in Topical DBDs as compared to single system DBDs; The previously listed criteria are met with the selection of the following Pilot DBDs:
- 1)
S023, Component Cooling Water (CCW) Systems. -
Mechanical discipline/builds on recent Operability Assessment.
- 2)
SO1, Environmental Qualification (EQ) -
Electrical discipline/Topical area.
- 3)
SO1, Controls System -
Controls discipline/will be selected by February 1, 1989.
- 4)
S023, Instrument Air Systems. -
Mechanical discipline/builds on work required to respond to NRC Generic Letter.
VIII IMPLEMENTATION SCHEDULES A.
Program Procedure's Schedule o
Writer's Guide for Topical DBD and System DBD -
First Quarter of 1989.
o DBD Preparation, Review and Issuance -
First Quarter of 1989.
o Open Item Tracking and Resolution -
Second Quarter of 1989.
o Maintenance of DBDs -
Fourth Quarter of 1989.
B.
DBD Reviews, Milestones o
At the 10%,
50%,
and 90% DBD development milestones, Program Management Reviews will be held.
Purpose:
- 1)
@ 10% -
Confirm adequate resources and design documentation is available.
- 2)
@ 50% -
Evaluation of review progress, and trend of open items.
- 3)
@ 90% -
Confirm completion forecast and review open items.
-Task 1 ErograM Developien "Industry Surveys CPE"Rev 1 so Incorporate
- Region V Woddag eRegion V working Group Gru inputfc~
- Rev 2 to Incorporate e~rgra PlxeS essona from So% progress
- P r o g a m P l n e S E
[ r ~ 1 ]
~i J
e vw s 0 1 N o t D Uw s
Task 2 Pilot DBD'sMutofIln Sr
- S01 Controls system (TBD) t3tIa OS023 Instr Air Task 3 validate-sSF eDevelop SSFI Program eInternal SSFI's UiS
IX.
DBD FORMAT The extent of DBD computerization is unresolved at this time.
Existing SCE computer data base programs are under review to consider the following:
o A computerized "Roadmap" that will tie together all the DBD elements with references to the "hardcopy" documentation; o
A "Roadmap" that will be accessible via mainframe; o
A computerized "Data Base" at the component and sub component level that will provide detailed technical data; The program is anticipated to use, as appropriate, existing plant data, such as:
o SONGS -
Plant Equipment Data Management System (PEDMS),
0 Master Instrumentation List, o Set point Index List, and a
Miscellaneous existing data bases.
A comprehensive "hardcopy" documentation at the plant system level will be the core of the package.
The tentative format of the "hardcopy" is included below:
0.0 PREFACE 0.1 Scope and Summary 0.2 Definitions 0.3 Abbreviations and Acronyms 0.4 Open Items 1.0 FUNCTIONAL DESCRIPTION.
1.1 Purpose 1.2 System Boundaries mechanical, electrical, etc interfaces interlocks 2.0 APPLICABLE CODES, STANDARDS AND REGULATORY REQUIREMENTS 2.1 General Design Criteria 2.2 Regulatory Documents 2.3 Codes and Standards general mechanical electrical, etc.
-7.
3.0 SYSTEM DESIGN BASES 3.1 System Performance Requirements 3.2 System Parameter Requirements 3.3 Structural Requirements 3.4 Separation/Redundancy/Diversity Requirements 3.5 External Hazards 3.6 Special Material/Chemistry Considerations 3.7 Special Testing Features 3.8 Inservice Inspection Requirements 3.9 Design and Safety Analysis Margin 4.0 COMPONENT DESIGN BASES 5.0 SYSTEM OPERATION 5.1 Functional and Operability Matrix (Limiting Conditions) 6.0 ACCIDENT ANALYSIS 7.0 DESIGN BASES MODIFICATION HISTORY
8.0 REFERENCES
9.0 TABLES/FIGURES/APPENDICES The format and the content as described above will be revised during the development of the pilot DBDs.
Only after review of the pilot's format and content adequacy, will the Design Bases Documentation packages be finalized.
APPENDIX A A)
DBD PREPARATION SCHEDULE CRITERIA The following criteria were used in preparing the attached schedule:
- 1)
The plant systems were ranked separately for Unit 1 and Units 2 and 3.
- 2)
Ranking was performed based on:
o Importance to safety o
Design considerations o Operations and maintenance considerations
- 3)
The pilot DBDs were excluded since they will be completed during 1989.
- 4)
The schedule covers the period 1990-1995 with at least fifteen systems completed every year.
- 5)
Priority was given to Units 2 and 3 with approximately two-thirds (2/3) for Units 2 and 3 and one-third (1/3) for Unit 1 per year.
This ratio was selected based on resource allocation of approximately one-third (1/3) to each Unit.
- 6)
Systems ranked as low priority are not included in the schedule.
Sub-Objectives:
o Where practical, prioritize the production DBDs to match the needs of San Onofre; o
Target DBD availability before planned design change activities for particular systems; and a
Schedule Design Engineering/Station DBD support compatible with unit outages and specific needs.
In summary:
Unit I Units 2&3 Plant Systems 56 62 Topicals 15 15 Plant systems scheduled 29 35 Topicals Scheduled 12 14 TOTAL SCHEDULED 41 49
Appendix A Continued
-A2 Total DBDs Scheduled for the period 1989-1995, including the four (4) pilots is 94.
B)
DESIGN BASES DOCUMENTATION PREPARATION SCHEDULE:
YEAR UNIT SYSTEM ID SYSTEM TITLE 1990 1
SD-SOI-580 Safety Injection, Spray and Recirculation i
SD-SO1-620 Auxiliary Feedwater 1
SD-SO1-420 Compressed (Intr) Air Systems 1
SD-SO1-590 Sequencer 1
SD-SOI-600 Diesel Generator 1
Topical Safe Shutdown 2&3 SD-S023-720 ESF Actuation 2&3 SD-S023-710 Reactor Protection 2&3 SD-S023-780 Auxiliary Feedwater 2&3 SD-S023-120 6.9KV, 4KV & 480 V Electrical Systems 2&3 SD-S023-690 Area Radiation Monitoring 2&3 SD-S023-750 Emergency Diesel Generators 2&3 SD-S023-740 Safety Injection, Containment Spray and Shutdown.Cooling 2&3 Topical Equipment Qualification (EQ) 2&3 Topical Accident Analysis 1991 1
SD-SO1-380 Nuclear Instrumentation 1
SD-SO1-140 125V DC 1
SD-SO1-190 Main Steam 1
SD-SO1-340 Saltwater Cooling System I
Topical Electrical Separation
Appendix A Continued
-A3 1
SD-SOI-390 Primary Process Instrumentation 2&3 SD-S023-140 125 & 250V DC 2&3 SD-S023-470 Excore Nuclear Instrumentation 2&3 SD-S023-410 Saltwater Cooling System 2&3 SD-S023-360 Reactor Coolant System 2&3 SD-S023-810 Post Accident Sampling System 2&3 SD-S023-820 Accident.Monitoring System 2&3 SD-20-23-700 Process and Effluent Radiation Monitoring System 2&3 SD-S023-800 Normal and Emergency Chilled Water 2&3 Topical Single Failure 1992 1
SD-SO1-630 Containment and Containment Isolation 1
SD-SO1-280 Reactor Coolant System 1
SD-SO1-320 Residual Heat Removal 1
SD-SO1-260 Feedwater Control 1
SD-SO1-130 480V & 12 KV System 1-Topical Accident Analysis 2&3 Topical Operator Actions 2&3 Topical Seismic 2&3 SD-S023-510 Control Element Drive Mechanism Control System 2&3 SD-S023-130 120V AC System 2&3 SD-S023-480 Reactor Regulating System 2&3 SD-S023-460 Incore Nuclear Instrumentation 2&3 Topical Codes and Standards 2&3 Topical Internal Hazards
Appendix A Continued
-A4 2&3 Topical Piping 1993 1
SD-SOI-570 Reactor Protection System and Permissives 1
SD-SO1-660 Post Accident Radiation Monitoring 1
Topical Single Failure 1
SD-SO1-330 Component Cooling Water System 1
SD-SO1-680 Dedicated Safe Shutdown 1
SD-SOI-640 Control Room and TSC HVAC System 2&3 SD-S023-430 Fuel Handling and Refueling System 2&3 SD-S023-390 Chemical and Volume Control System 2&3 SD-S023-590 Fire Detection and Protection 2&3 SD-S023-770 Containment.System 2&3 SD-S023-550 Auxiliary Steam/Auxiliary Boiler System 2&3 SD-S023-250 Main Feedwater System 2&3 SD-S023-160 Main and Reheat Steam System 2&3 Topical Fire Protection 2&3 Topical Pipe Break 1994 1
SD-SO1-540 Area Radiation Monitoring Systems I
Topical Operator Actions 1
Topical Seismic 1
Topical Fire Protection 1
Topical Internal Hazards 1
Topical Piping 2&3 SD-S023-600 Plant Communication System 2&3 SD-S023-530 Turbine Plant Cooling Water System
Appendix A Continued
-AS 2&3 Topical Human Factors 2&3 SD-S023-260 Main Feed Pump, Turbine and Turbine Controls System 2&3 SD-S023-650 Coolant Radwaste System 2&3 SD-S023-660 Gaseous Radwaste System 2&3 SD-S023-190 Condenser Air Removal System 2&3 SD-S023-175 Steam Bypass Control System 2&3 SD-S023-540 Auxiliary Gas System 1995 1
SD-SO1-450 Airborne Radioactive Area HVAC System 1
SD-SO1-150 Maintained 120 V AC System 1
SD-SO1-650 Post Accident Sampling System 1
SD-SO1-310 Chemical and Volume Control.System 1
SD-SO1-550 Operational Radiation Monitoring 1
SD-SOl-400 Rod Control System 1
SD-SO1-440 Meteorological/Seismic Monitoring System I
SD-SO1-290 Reactor Core, Vessels and Internals 1
Topical Human Factors 1
Topical Pipe Break 1
Topical Security 2&3 SD-S023-490 Plant Monitoring System 2&3 Topical Security 2&3 Topical External Hazards 2&3 Topical Structures