Process for identifying accident scenarios for licensing of CANDU 3
- Atomic Energy of Canada Limited, Mississauga, Ontario (Canada)
Nuclear regulatory and design organizations throughout the world have a tradition of looking at the response of nuclear power plants to a set of design-basis accidents. Ensuring that doses to members of the public and the operating staff are limited for these events has been one important way of making sure that the public is protected. Other safety initiatives include accident prevention and mitigation by quality design, fabrication and construction, inspection, maintenance and testing of components, careful site selection, design of an appropriate operator interface, and operator training. Pickering generating station A is Ontario Hydro's oldest operating nuclear station. Its four 508-MW(electric) (net) CANDU units were placed in service in the early 1970s. Because of its vintage, Pickering A does not necessarily conform to all current safety design practices and requirements, such as in the extent of separation between process, mitigating, and support systems. This, in turn, raises the possibility of regulatory demand for safety upgrades. Furthermore, the operational surveillance programs in place in Pickering A are not as well supported by system reliability models as the newer stations. A risk assessment study was, therefore, carried out to provide a basis for plant backfit decisions and operational reliability models. A key objective was to appropriately characterize potential intersystem dependencies.
- OSTI ID:
- 5817792
- Report Number(s):
- CONF-930601--
- Journal Information:
- Transactions of the American Nuclear Society; (United States), Journal Name: Transactions of the American Nuclear Society; (United States) Vol. 68; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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210400* -- Power Reactors
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Otherwise Moderated or Unmoderated
210700 -- Nuclear Power Plants-- Regulation & Licensing
ACCIDENTS
CANDU TYPE REACTORS
COOLING SYSTEMS
ECCS
ENERGY SYSTEMS
ENGINEERED SAFETY SYSTEMS
HEAVY WATER MODERATED REACTORS
LICENSING
PRESSURE TUBE REACTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR PROTECTION SYSTEMS
REACTOR SAFETY
REACTORS
SAFETY
SAFETY ANALYSIS
TECHNOLOGY ASSESSMENT
THERMAL REACTORS