ISO 16646:2024
Fusion installations — Criteria for the design and operation of confinement and ventilation systems of tritium fusion facilities and fusion fuel handling facilities
Fusion installations — Criteria for the design and operation of confinement and ventilation systems of tritium fusion facilities and fusion fuel handling facilities
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 80
- Дата публикации:
- 20 июня 2024 г.
- Издание:
- ISO IS 16646 edition 1 version 1
- ICS:
- 13.280
This document specifies the applicable requirements related to the design and the operation of confinement and ventilation systems for fusion facilities for tritium fuels and tritium fuel handling facilities specific for fusion applications for peaceful purposes using high tritium inventories, as well as for their specialized buildings such as hot cells, examination laboratories, emergency management centres, radioactive waste treatment and storage facilities. In most countries, a tritium quantity is declared as high for tritium inventories higher than a range of 10 g to 100 g. In the tritium fusion facilities in the scope of this document, the tritium inventory is deemed to be higher than this range for the whole site. This document applies especially to confinement and ventilation systems that ensure the safety function of nuclear facilities involved in nuclear fusion with the goal to protect the workers, the public and the environment from the dissemination of radioactive contamination originating from the operation of these installations, and in particular from airborne tritium contamination with adequate confinement systems. The types of confinement systems for other facilities are covered by ISO 26802 for fission nuclear reactors, by ISO 17873 for facilities other than fission nuclear reactors and by ISO 16647 for nuclear worksite and for nuclear installations under decommissioning. The facilities covered by these three standards, notably ISO 17873, include tritium as a radioactive material among the ones to be confined, but tritium is not their driver of the risks for workers and for members of the public. Nevertheless, the tritium quantities and risks from fusion facilities create specificities for a specific standard (e.g. in fusion facilities, tritium is the driver of routine and accident consequences). Therefore, the scope of this document does not cover the other facilities involved in tritium releases (ISO 17873, ISO 16647 and ISO 26802), even though these other facilities create tritium releases (e.g. non-reactor fission facilities, tritium laboratories, tritium removal facilities from fission plants, tritium defence facilities).
Abstract
Overview
ISO 16646:2024 - Fusion installations - Criteria for the design and operation of confinement and ventilation systems of tritium fusion facilities and fusion fuel handling facilities provides requirements and guidance for protecting workers, the public and the environment from airborne tritium contamination. The standard applies to fusion installations and specialized buildings (hot cells, examination labs, emergency management centres, radioactive waste treatment and storage) where tritium inventories are high (typically above the common national range of 10 g–100 g and assumed to be high across the site). ISO 16646 focuses specifically on confinement and ventilation systems for peaceful nuclear fusion applications using tritium fuels.
Key topics and technical requirements
ISO 16646 addresses the full lifecycle of confinement and ventilation systems with emphasis on practical safety functions:
- Confinement architecture: definitions and roles of first and secondary confinement systems, static containment barriers and fuel cycle systems.
- Dynamic confinement and ventilation design: zoning of potentially contaminated areas, negative pressure strategies, airflows, duct layout, and optimization of air exchanges.
- Filtration and detritiation: HEPA filtration, detritiation systems and other gas-trapping technologies (informative annex with examples).
- Risk assessment and safety classification: preliminary analysis, risk evaluation, and assignment of safety classes for confinement and ventilation components.
- Management and operation: procedures, maintenance, testing (pre‑commissioning, acceptance, commissioning, periodic), monitoring and operational controls.
- Instrumentation & Control (I&C): control systems, instrumentation needs and alarm strategies for ventilation and confinement.
- Specific hazards: combustible gases, cryogenic liquids/gases, ambient condition control, fire prevention (compartmentalization and containment), external hazards and duct deposition prevention.
- Informative annexes: guidance on airborne contamination risks, detritiation technologies, safety classification examples, typical leak rates and filter requirements.
Practical applications and who uses this standard
ISO 16646 is intended for professionals involved in the design, construction, commissioning, operation and regulation of tritium fusion facilities and fusion fuel handling facilities, including:
- Nuclear safety engineers and facility designers
- HVAC and ventilation system designers for nuclear environments
- Radiological protection specialists and health physicists
- Operations and maintenance teams
- Regulatory authorities and licensing bodies
- Project managers for fusion research plants and fuel handling installations
Practical uses include specifying ventilation system performance, selecting detritiation and filtration equipment, establishing containment zoning and negative-pressure strategies, and preparing safety documentation for licensing and operation.
Related standards
- ISO 26802 - confinement systems for fission nuclear reactors
- ISO 17873 - confinement for facilities other than fission reactors
- ISO 16647 - nuclear worksite and nuclear installations under decommissioning
ISO 16646 complements these standards by addressing the tritium-specific drivers of risk in fusion installations.
Технические детали
- Технический комитет
- ISO/TC 85/SC 2 - Radiological protection
- SKU
- ISO 16646:2024
Похожие стандарты
Стандарты, упомянутые в описании
BS ISO 26802:2010
ДействующийNuclear facilities. Criteria for the design and the operation of containment and ventilation systems for nucl…
ISO 17873:2004
ДействующийNuclear facilities — Criteria for the design and operation of ventilation systems for nuclear installations o…
Overview ISO 17873:2004 provides essential criteria for the design and operation of ventilation systems in nuclear facilities other than nuclear reactors. Developed by the International Organization…