Effect of Halon/reg sign/ fire extinguishing agent on activated carbon
Electrical equipment and machinery in the reactor areas are protected with fire extinguishers containing ''Halon/reg sign/'', a gas with the chemical composition CF/sub 3/Br. Discharges from these extinguishers will reach the reactor building ventilation system, and thus will pass through the filter compartments of the Airborne Activity Confinement System (AACS). Questions have been raised about (a) the effects of a gradual release of Halon/reg sign/ over a period of time, as might occur if the Halon/reg sign/ were discharged in a closed room and leaked slowly into the remainder of the building; (b) the significance of Halon/reg sign/ in less severe accidents, such as the 3% core damage accident now considered the Maximum Credible Accident. This memorandum summarizes the results of calculations undertaken to resolve these questions. These calculations showed that the slow release of Halon/reg sign/ to the building increases the tolerable limit about 30%, and that for the 3% core damage accident, the discharge of even the largest fire extinguishing system in the reactor area (approximately 1500 lb. Halon/reg sign/) would not significantly affect the performance of the AACS. 1 ref.
- Research Organization:
- Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 6710733
- Report Number(s):
- DPST-85-388; ON: DE89002462
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
BROMINE COMPOUNDS
CARBON
CARBON COMPOUNDS
CARBON FLUORIDES
ELEMENTS
FIRE EXTINGUISHERS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
HAZARDS
NONMETALS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORES
REACTOR SAFETY
SAFETY
SORPTION
VENTILATION SYSTEMS