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EG-OS: Enhancing Operational Safety in Waste Management

The Operational Safety Expert Group on Operational Safety (EG-OS) focuses on regulatory aspects, radiation protection, transportation, and construction safety in waste management. Key outcomes include fire risk management, hazard database development, ventilation in underground facilities, co-activity hazards, and waste acceptance criteria.

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EG-OS: Enhancing Operational Safety in Waste Management

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  1. OperationalSafety- IGSC Expert Group on Operational Safety (EG-OS) GEOSAF-Meeting F. Boissier, S. Voinis, S. Barlow DMR/DIR/14-0109

  2. Mandate of the EG-OS • Mandate approved in March 2013 at the RWMC -46 • A two- years duration mandate • renewable at the discretion of the IGSC. •  Overall, the group members representatives from : • waste management agencies, • regulatory authorities, • technical support organizations, • research and development institutions with hands-on experience or working towards that goal in relatively short time scales, • IAEA invited as observer in the group, as well as the leaders of other international projects. DMR/DIR/14-0109

  3. EG-OS 1st annual meeting • Held on June 24, 2013, in Paris; 13 participants from 10 national and international organizations • Elected Chair: FabriceBoissier, Andra; Vice-Chair: Wilhelm Bollingerfehr, DBE DMR/DIR/14-0109

  4. EG-OS 1st annual meeting • The following areas were discussed in the 1st meeting: • Regulatory aspects of DGR operation and construction in different national programmes • Experience on radiation dose and radiation protection • Transportation, emplacement and operational and construction safety • Knowledge transfer • The EG-OS has adopted the following work activities in the PoW: • Fire risk management (prevention and mitigation, risk assessment) • An NEA “hazard” database • Ventilation in underground facilities • Co-activity hazard • Waste acceptance criteria DMR/DIR/14-0109

  5. Key outcomes of the 1st EG-OS meeting • Fire risk: • “EG-OS agreed that expert exchanges on fire risk will continue by a group of implementers “Hazard” database: • EG-OS members to provide their list of operational hazards • some already received • The Secretariat is also researching existing international “hazard” databases, in particular those developed for nuclear facilities Ventilation: • A meeting among the expert group of implementers is currently being planned for by the Secretariat, to be held late 2013 or early2014 DMR/DIR/14-0109

  6. Key outcomes of the 1st EG-OS meeting • Hazards in co-activities: • A questionnaire, drafted by Andra, has been distributed to seek more detailed inputs from members • Some responses already received Regulations • Most countries do not have specific regulation for construction and operation of a DGR • Importance of identifying gaps between implementers • Need of clear regulatory framework and expectations of regulators • Implementers shall express the key areas where clarifications of regulatory framework are needed to NEA Waste acceptance criteria: • EG-OS has decided to leave this task out until more work in design basis accident is performed DMR/DIR/14-0109

  7. Key outcomes of the Fire Experts meeting • National waste management organizations are more or less advanced in their fire studies development. • Most participants consider operational experience from the mining industries relevant and valuable in developing fire protection plan for a DGR. • Many programs develop their fire protection plan using similar defense-in-depth principles: • (i) prevent abnormal situations - limiting flammables • (ii) prevent degradation – early detection, fight fire as soon as possible • (iii) minimize damage – preventing fire spread DMR/DIR/14-0109

  8. Two Fire Experts meetings • Different fire protection system designs are noted in different countries. • E.g. Canada uses water to fight fire in above-ground facilities and no water will be used underground • Fire fighting equipment depends on waste types • Topics that were pointed out : • Ventilation system design and their functions in a fire • Emergency measures – essential features of refuge stations & evacuation protocols • Design basis scenarios – assumptions used in scenarios; fire modeling, behavior of waste • Develop common fire protection standards / approaches, e.g. adopt similar fire door design requirements. XXX/YY/AA-NNNN IGSC _15 - October 10, 2013 Paris (France)

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