NUREG-1537, Part 2 - NRC

REACOR COOLANT SYMS
(Thisfeature is evaluated in conjunction with the reviews of the reactor
description and accidents.)
The chemical quality of the primary coolant will limit corrosion of the fuel
cladding (or other primary barrier to release of fission products), the
control and safety rod cladding& the inside of the reactor vessel (or pool),
and other essential components in the primary coolant system for the
duration of the license and for the projected utilization time of the fuel.
(For a closedprimay coolnt ystem) Systems are present that will
prevent hydrogen concentrations from reaching combustible limits.
* The size and shape of the prinmary vessel or pool will provide sufficient
radiation shielding to maintain personnel exposures below the liits in
10 CFR Part 20 and will provide a heat reservoir sufficient for anticipated
reactor operations.
* Primary coolant system instrumentation and controls are designed to
provide all necessary functions and to transmit information on the
operating status to the control room.
* -. The technical Specifications, including testing and surveillance, provide
reasonable assurance of necessary primary coolant system operability for
reactor operations as analyzed in the SAR.
* The design bases of the primary coolant system provide reasonable
assurance that the environment and the health and safety of the public will
-be protected.
5.3 Secondary CoolantSystem
Areas of Review
Secondary coolant systems of non-power reactors are designed to transfer reactor
heat from'the primary cooant system' to the environment. Non-power reactors
may be designed in thre6 ways: With aicontinuously operating secondary coolant
system, with an on-demand secondary'coolant system, and without a secondary
coolant system. For most of the licensed reactors, the coolant systemnsare
designed for continuous operation at licensed power level.. Therefore, the
secondary' coolant system in these reactors must be designed to dissipate heat
continuousl.' Some'non-power reactors are designed and licensed to operate at
low power levels, orfor limited time intervals," so that the primary coolant system
can absorb or dissipate the heat without a continuously operating secondary
coolant systemn Some non-power reactors require no secondary coolant system.
In this section of the SAR, the applicant should justify how any necessary heat
REV. 0, 2P96 5-7 STANDARD REVIEW PLAN
'REV. 0,2I96 5-7 STANDARDREvmwPLAN