NUREG-1537, Part 2 - NRC

CHAPTER5
analyzed. The reviewer should verify that the potential personnel radiation
exposures from sources shielded by primary coolant have been analyzed and the
protection factors provided by the coolant have been discussed.
Evaluation Findings
This section of the SAR should contain sufficient information to support the
following types of conclusions, which will be included in the staffs safety
evaluation report:
The applicant has described and analyzed auxiliary systems that use primary
coolant for functions other than in-core fuel cooling, has derived the design
bases from other chapters of the SAR, has analyzed any reactor
components located in high radiation areas near the core for potential
heating that could cause damage to the reactor core or failure of the
component, and has planned acceptable methods to remove sufficient heat
to ensure the integrity of the components The coolant for these systems is
obtained from the purified prinmary coolant system without decreasing the
capability of the system below its acceptable performance criteria for core
cooling
* The applicant has analyzed any reactor components or auxiliary systems for
which primary coolant helps shield personnel from excessive radiation
exposures. The use of the coolant for these purposes is acceptable, and the
estimated protection factors limit the exposures to the requirements of
10 CFR Part 20 and the facility ALARA program guidelines. There is
reasonable assurance that credible and postulated malfunctions of the
auxiliary cooling systems will not lead to uncontrolled loss of primary
coolant, radiation exposures, or release of radioactivity to the unrestricted
environment that exceeds the requirements of 10 CFR Part 20 and the
facility ALARA program guidelines.
* The technical specifications, including testing and surveillance, provide
reasonable assurance of necessary auxiliary cooling system operability for
normal reactor operations.
5.8 Reference
Griess, J. C., et al., ORNL-3541, "Effect of Heat Flux on the Corrosion of
Aluminum by Water," Part IV, Oak Ridge National Laboratory, February 1964.
NUREG-1537,PNa2 5-18 REV 0,2/96
INUREG-1537,PART2 5-18 REV 0. 2/96