NUREG-1537, Part 2 - NRC

ENoxmmm SAFETY FEATuRES
than regulatory limits. This function of the confinement and the HVAC system is
not considered a function of an ESF. If the effluent control systems provide no
unique accident consequence-mitigation function, the design bases and detailed
discussions of the systems for normal operations should be given in Chapter 3,
"Design of Structures, Systems, and Components," and Chapter 9, 'Awidliary
Systems," of the SAR. Discussions and calculations of diffusion and dispersion of
airborne radioactivity in both restricted and unrestricted environments should be
given in Chapter 11, 'Radiation Protection Program and Waste Management."
Areas of Review
The reviewer should evaluate the following:
* Design bases and functional description of the required mitigative features
of the confinement ESFs, derived from the accident scenarios.
* Drawings, schematic diagrams, and tables of important design and
operating parameters and specifications for the confinement ESFs,
including
- seals, gaskets, filters, and penetrations (e.g., electrical
experimental, air, and water)
- necessary ESF equipment included as part of the confinement
- fabrication specifications for essential and safety-related
components.
* .Discussion and analyses, keyed to drawings, of how the structure provides
the necessary confinement analyzed in Chapter 13, with cross reference to
other chapters for discussion of normal operations (such as Chapter 4,
"Reactor Description," and Chapter 11),as necessary.
* Description of control and safety instrumentation, including the locations
and functions of sensors, readout devices, monitors, and isolation
components, as applicable. (Design features should ensure operability in
the environment created by the accident.)
* Discussion of the required limitations on release of confined effluents to the
environrnent. -.
* Surveillance methods and intervals included in the technical specifications
that ensure operability and availability of the confinement ESFs, when
required.
REV. 0, 2.6 6-S STANDARD REVIEW PLAN
I REV.0, 2196 6-5 STANDARDREmIwPLAN