NUREG-1537, Part 2 - NRC

CHAPTER5
This chapter gives the review plan and acceptance criteria for information on the
heat removal systems. The information suggested for this section of the SAR is
outlined in Chapter 5 of the format and content guide.
5.1 Summary Description
The applicant should summarize the principal features of the reactor coolant
systems, including the following:
* type of primary coolant: liquid, gas, or solid (conduction to surrounding
structures)
* type of primary coolant system: open or closed to the atmosphere
* type of coolant flow in the primary system: forced-convection, naturalconvection,
or both
* type of secondary coolant system, if one is present, and the method of heat
disposal to the environment
* capability to provide sufficient heat removal to support operation at full
licensed power
* special or facility-unique features
5.2 Primary Coolant System
Areas of Review
As noted above, non-power reactor design requires choosing among several
interdependent variables. Usually, the design represents a compromise between
the neutron flux densities required and the need to dissipate thermal power. The
final design depends on the intended uses of the reactor, the resources available,
and the priorities of the facility owner. The objective of the final design is ensured
safety. The primary coolant system is a key component in the design and should
have the capability to
* remove the fission and decay heat from the fuel during reactor operation
and decay heat during reactor shutdown
* for most non-power reactors, transfer the heat to a secondary coolant
system for controlled dissipation to the environment
NUREG-1537, Pur2 5-2 REv. 0. 2/96
NUREG- 1537, PART2 5-2 REV. 0, 2/96