DEVELOPMENT OF TEMPERATURE PROTECTIVE CIRCUITS FOR THE HNPF FUEL CHANNEL EXIT

Technical Report · Thu Jun 30 04:00:00 EDT 1960

OSTI ID:4153326

Brown, D E

The HNPF plant protective system includes circuits with the function of precluding unsafe high temperature and sustained fast changes in fuel-charuel coolant-exit temperatures, either in the increasing or decreasing direction. The development of the fuel-charuel exit high temperature and rate change of temperature circuits resulted in a transistorized system of plug-in components of high reliability. The circuits were designed, where possible, for fail-safe operation in case of component malfunction; and for ease of maintenance and calibrationIn addition to providing shutdown or scram signals, these circuits also provide setback and alarm signals. The setpoints for scram, setback, and alarm are each independently adjustable. These circuits monitor an iron- constantan thermocouple located at the outlet of a fuel cluster in the reactor. In the actual protective system, three identical Circuits are used in a 2-out-of- 3 coincidence arrangement to enhance the over-all reliability. (auth)

• Research Organization: Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-14-018629
• OSTI ID: 4153326
• Report Number(s): NAA-SR-5313
• Country of Publication: United States
• Language: English

Related Subjects

CIRCUITS
COINCIDENCE METHODS
CONTROL SYSTEMS
ELECTRONIC EQUIPMENT
FUEL ELEMENTS
HIGH TEMPERATURE
HNPF
MAINTENANCE
PERFORMANCE
POWER PLANTS
REACTOR SAFETY
REACTOR TECHNOLOGY
REACTORS
SHUTDOWN
SIGNALS
STANDARDS
THERMOCOUPLES