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what is the purpose of the AR system
establish vacuum on startup and remove non condensable gasses at power
where does the system normally discharge to?
how is it monitored
the plant vent stack, By and RU monitor
how many stages are the AR pumps
2 stages
what are the auto starts for AR pump D
4.2 Hga in A shell
4.8 Hga in B shell
5.3 Hga in C shell
What are the auto actions of the D ar pump suction vavle
Will auto open to the shell with degraded vacuum if more than one has a degraded vacuum it will open to all affected shells
describe the AOV valves 19A 19B and 13
19 A is the inlet to the filter 19 B is the bypass valve and 13 is the outlet valve
what is the fail position for 19A, 19 B and 13
fails thru filter on loss of power or air
19a and 13 open
19B closed
what happens on an RU 141 alarm HI signal?
what is the hi RU 141 alarm indicative of?
turns on filter blower and aligns thru filter mode. the hi alarm is an early indication of SGTR
what provides makeup seal water to the AR pumps
makeup seal water is provided by the Condensate system
What cools the AR pumps
PW
what must be in service prior to starting the AR system
gland seal steam should be in service
