SCWR - Safety Systems and Containment Investigations - Summary Report Page: 3 of 5
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SE 04-069, rev 0
Page 3 of 5
1. OVERVIEW OF TASKS
The work results summarized in this report have been developed according to plans described in
References  and .
Formal Progress Reports have been provided in References  through .
2. REVIEW OF DESIGN BASES AND REQUIREMENTS ON SAFETY SYSTEMS
This is reported in Reference . The general design criteria and safety requirements are
specified for the SCWR in order to provide a basis for the design of the safety systems and the
containment. A combination of the most stringent requirements applied today is used. A key
requirement that should be clarified further is the accommodation of core melt accidents in the
safety requirements and the design criteria for the SCWR plant. On the basis of comparisons to
modern BWR designs a number of possible safety system designs are identified and evaluated.
The conclusion is that the major near term efforts should be put on the design of core cooling
systems mitigating the effects of loss of core flow transients and loss of coolant accidents. The
first layout of the containment is described. There is a major impact from the requirements put
on mitigation of core melt accidents.
3. GENERAL DESIGN CRITERIA AND SAFETY REQUIREMENT
Design criteria and safety requirements were discussed in Reference . A summary review of
the design bases for a SCWR were provided in Reference .
4. CONTAINMENT DESIGN
The containment design was described in Reference . The design bases were also provided in
Calculations of the behaviour of the containment during accident conditions were provided in
Reference . These results have been further elaborated on in Reference . The
conclusion is that the containment design should not be an issue for the SCWR provided that
sufficient space can be allowed for safety systems and passive behaviour of the containment.
5. DESIGN OF SAFETY SYSTEM
The design of the safety systems was discussed in Reference . Specific designs were
developed and documented in Reference .
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Jonsson, Nils-Olov. SCWR - Safety Systems and Containment Investigations - Summary Report, report, September 8, 2004; United States. (digital.library.unt.edu/ark:/67531/metadc785116/m1/3/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.