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korea nuclear technology co.,ltd.

Safety Related System

Passive Auto-Catalytic Recombiner Hydrogen Igniter Hydrogen Monitoring System Mitigation System Against By-Pass Line Break Accident

Assembly

Application

Passive Auto-Catalytic Recombiner(PAR) is used to protect containment building from hydrogen explosion by eliminating hydrogen that might be generated during Design Basis Accident(DBA) and Severe Accident(SA).

Characteristics

Ceramic Catalyst
  • Honeycomb shape catalysts leading to higher hydrogen removal rate
  • Roof with eaves to avoid the inflow from LOCA(Loss Of Coolant Accident) spray.
  • Simplified installation and removal of catalysts without disassembling and reassembling.
  • Standardized supports for simplified and easy installation at site.
  • Outflow guide plate to lower flow resistance.

Operation Theory

Specification

(Environmental Condition : 1.5 bar & 60 ℃)
Model Configuration Depletion rate(kg/hr)
Weight(Kg) Dimension(mm) No. of Catalyst at 4 v/o at 8 v/o
KPAR-40 36 335x340x1400 4 1.1 2.4
KPAR-80 59 639x340x1400 8 2.2 4.8
KPAR-160 124 1276x342x1400 16 4.4 9.6

Function Test

Function test is performed to verify PAR assembly’s hydrogen recombination rate by following sequence.

(1) Catalyst Test
(2) PAR Assembly Test at Atmospheric Condition
(3) PAR Assembly Test at 1.5 bar and 60℃