COMISSÃO NACIONAL DE ENERGIA NUCLEAR · PDF fileCOMISSÃO NACIONAL DE ENERGIA...
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COMISSÃO NACIONAL DE ENERGIA NUCLEAR The Importance of a Management System in Nuclear Facility Maintenance The Brazilian Overview Eduardo Motta Technical Meeting on Grading of the Application of Management System Requirements (23-27 January 2012)
Transcript of COMISSÃO NACIONAL DE ENERGIA NUCLEAR · PDF fileCOMISSÃO NACIONAL DE ENERGIA...
COMISSÃO NACIONAL DE ENERGIA NUCLEAR
The Importance of a Management System in Nuclear Facility Maintenance
The Brazilian Overview
Eduardo Motta
Technical Meeting on Grading of the Application of Management System Requirements (23-27 January 2012)
Introduction Brazilian Nuclear Facilities
QA standards in Brazil and IAEA
Fuel cycle facility QA System
QA System relevance in facility maintenance
Grading of QA Requirements Fuel cycle facility example, difficulties encountered and strategies to overcome those difficulties
Brazilian trends
Conclusions
Summary
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Brazilian Nuclear Facilities Mining
Caetité – operating
Santa Quitéria – site licensing started
Poços de Caldas – in decommissioning process
Resende city site Enrichment, UO2 conversion, pellets fabrication, fuel components fabrication and fuel assembly
NPP, Angra city Angra 1 – 640 MW, WH design
Angra 2 – 1350 MW, SIEMENS design
Angra 3 – 1350 MW, SIEMENS/AREVA design, under construction
Research institutes and reactors
Introduction
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QA standards in Brazil and IAEA evolution
50-C-QA, 1978 – QA for Safety in NPP CNEN-NE-1.09, 1980 – Standard Format of FSAR
One chapter is QAP, based on 50-C-QA
CNEN-NN-1.16, 2000 – QA for safety in NPP and other facilities
The main focus is safety and the grading of QA requirements is mentioned
TRS 328, 1991 – Grading of QA Requirements GS-R-3, 2006 – The Management System for Facilities and Activities
Management in an integrated system
QA standards in Brazil and IAEA
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Time
28 years
2000
/17
CNEN-NN-1.16, 2000 – QA for safety in NPP and other facilities
Safety is the main focus (in all facilities stages: construction, operation...)
QA requirements grading is based on: Safety;
Complexity;
Supervision necessity;
Compliance with inspection / test;
Quality history and;
Repair difficulty;
QA standards in Brazil and IAEA
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Fuel cycle facility QA System references Based on CNEN-1.16, ISO 9001, ISO 14001 and OSHAS 18001
QAP
Instructions
Fuel cycle facility QA System
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Importance of QA System in maintenance
CNEN-NN-1.16 – Safety in all facility stages Operation Maintenance is relevant to keep (or improve) the design safety requirements
CNEN-NE-1.21, 1991 – Maintenance in NPP Safety related items listed Preventive maintenance and periodical inspections / tests Training (activities, radioprotection, specific potential risks and QA) Activity procedures (administrative and technical) Modification control (including documents) Corrective maintenance – historical data Responsibilities Records control Analysis Audits Continuous improvement
QA System relevance in facility
maintenance
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Maintenance in a fuel cycle facility
Safety related items listed √ ok
Preventive maintenance and periodical inspections / tests √ GR and LV Training (activities, radioprotection, specific potential risks and QA) √ IM, annual radioprotection and industrial safety training and QA annual week (trend to integrate all issues)
Activity procedures (administrative and technical) √ GR annual plan, LV and IM
Modification control (including documents) √ ok
Corrective maintenance – historical data √ software maintenance database
Responsibilities √ manager, supervisor and execution employee
Records control √ maintenance software database periodical backup
Analysis √ maintenance supervisor and support staff
Audits √ internal and external
Continuous improvement √ based on analysis / audits results
QA System relevance in facility
maintenance
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Grading of QA Requirements in a Fuel Cycle Facility Fuel cycle facility example UO2 conversion plant
Grading of QA Requirements
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Grading of QA Requirements in a Fuel Cycle Facility: an example for maintaining the designed safety requirement UO2 conversion plant Vaporization system
Vaporization system Safety analysis
Safety analysis UF6 leakage
UF6 leakage Conductivity of vapor increases and the cylinder valve is closed
Safety item Condensate vapor conductivity analyzer
Grading of QA Requirements
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Grading of QA Requirements in a Fuel Cycle Facility: an example for maintaining the designed safety requirement
Condensate vapor conductivity analyzer QA grading (TRS-328)
Safety item
Mature – supplied by manufacturers with extended experience in the field and also, if possible, the original one or supplier of other similar nuclear installation
Complexity – the design, manufacture and installation do not differ from other installations
Mature and not complex safety item
Grading of QA Requirements
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Grading of QA Requirements in a Fuel Cycle Facility: an example for maintaining the designed safety requirement
Condensate vapor conductivity analyzer Mature and not complex safety item
QA requirements must ensure adequate: Transport
Incoming inspection
Identification
Storage
Periodical inspections / tests using procedures (LV and IM)
Periodical preventive maintenance using procedures (IM)
Continuous improvement
Grading of QA Requirements
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Grading of QA Requirements in a Fuel Cycle Facility: an example for maintaining the designed safety requirement
Condensate vapor conductivity analyzer NOT Mature New supplier (nationalization)
QA requirements must ensure adequate: Supplier history (other factories / not in safety items)
Evidential quality assurance documents
Audits in the supplier installation
Item tests in operational conditions
Transport
Incoming inspection
Identification
Storage
Periodical inspections / tests using procedures (LV and IM)
Periodical maintenance using procedures (IM)
Continuous improvement
Grading of QA Requirements
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Grading of QA Requirements in a Fuel Cycle Facility: an example for maintaining the designed safety requirement
Difficulties encountered and strategies to overcome those difficulties
Most standards were issued to NPP Adapt and use them
Imported items lead to interaction difficulties Import from known suppliers and interaction with other similar nuclear fuel factories
Small amount of necessary item procurements Interaction with other similar (but larger) nuclear fuel factories
Nationalization having only one fuel factory in the country Interaction with other similar (but larger) national non nulclear factories
Grading of QA Requirements
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Brazilian trends in QA System Based on CNEN-1.16, ISO 9001, ISO 14001 and OSHAS 18001
SIG – Integrated Management System In accordance to GS-R-3
Safety, health, environment, security, quality and economic aspects
Brazilian trends
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Conclusions
National standards improvement underway (the licensing process is changing year by year to consider safety in an integrated way);
Importance of maintaining the safety of the installation during its life cycle;
Importance of desmonstrating the relevance of QA concerning safety for all the operators, including, employees Satefy Culture improvemnts;
NPP is not the only one! In some countries there are also fuel cycle facillities;
IAEA has a very important role in enhancing the safety culture.
Conclusions
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Technical Meeting on Grading of the Application of Management
System Requirements (23-27 January 2012)
