Pressure suppression containment system for boiling water reactor
- San Jose, CA
A system for suppressing the pressure inside the containment of a BWR following a postulated accident. A piping subsystem is provided which features a main process pipe that communicates the wetwell airspace to a connection point downstream of the guard charcoal bed in an offgas system and upstream of the main bank of delay charcoal beds which give extensive holdup to offgases. The main process pipe is fitted with both inboard and outboard containment isolation valves. Also incorporated in the main process pipe is a low-differential-pressure rupture disk which prevents any gas outflow in this piping whatsoever until or unless rupture occurs by virtue of pressure inside this main process pipe on the wetwell airspace side of the disk exceeding the design opening (rupture) pressure differential. The charcoal holds up the radioactive species in the noncondensable gas from the wetwell plenum by adsorption, allowing time for radioactive decay before the gas is vented to the environs.
- Research Organization:
- General Electric Co., Boston, MA (United States)
- DOE Contract Number:
- AC03-90SF18494
- Assignee:
- General Electric Company (San Jose, CA)
- Patent Number(s):
- US 5596613
- OSTI ID:
- 870799
- Country of Publication:
- United States
- Language:
- English
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Pressure suppression containment system
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Related Subjects
suppression
containment
boiling
water
reactor
suppressing
inside
bwr
following
postulated
accident
piping
subsystem
provided
features
main
process
pipe
communicates
wetwell
airspace
connection
downstream
guard
charcoal
bed
offgas
upstream
bank
delay
beds
extensive
holdup
offgases
fitted
inboard
outboard
isolation
valves
incorporated
low-differential-pressure
rupture
disk
prevents
gas
outflow
whatsoever
unless
occurs
virtue
exceeding
design
differential
holds
radioactive
species
noncondensable
plenum
adsorption
allowing
time
decay
vented
environs
pressure suppression
radioactive species
water reactor
coal bed
pressure differential
radioactive decay
boiling water
isolation valve
suppression containment
pressure inside
active species
coal beds
main process
noncondensable gas
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