(DBA) , . , , , , , , , . DBA BWR , , , BWRs (BWR/1-BWR/6), DBA " " , (LBLOCA, ) , , (LOFW, ), , (, offsite ). BWR , .
BWR/4, BWR .
( T+0) , drywell, . , - , drywell T+0.3. RPS , , drywell. RPS , , ( ), , spinup RCIC HPCI, , LPCI CS.
, T+0.5. RPS uninterruptable , , ; , , , RPS , . , . T+25.
. - MSIV ( T+2), RPV, , - , , , , . HPCI RCIC - , 2 000 L/min (600 /) RCIC, , T+5 , ; 19 000 L/min (5 000 /) HPCI, T+10, , , . T+10 , 285 C (550 F) , , , , . T+12 uncovery. T+18 540 C (1000 F). T+20 , . T+25 ; , LPCI CS T+40.
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T+40 650 C (1200 F) ; CS LPCI , deluging , . -, , , , , . , 200 000 L/min (3 300 L/s, 52 500 /, 875 gal/s) LPCI deluging , CS T+100, , . , , 900 C (1650 F) ( 1200 C (2200 F) NRC) , , .
, , , CS , LPCI , , - .
LPCI , defueling . defueling LPCI. , ; ECCS; ; ; drywell; , , .. , , NRC, , ; , ( ); , . , , , , , , , , , , , ; , BWR. , , , .
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ABWR ESBWR, BWR, - -, () , , . BWR 5s 6s , , . uncovery , 600 C (1 100 F), NRC.
, , DBA LBLOCA , BWR. , ECCS, . , - BWR, 1975 - , , ; , , , , 2009, , . BWR - , , , , , , , , , . retrofitted .
, , , .
, RPS , ? , ()? , ?
. :
http://en.wikipedia.org/wiki/Nuclear_reactor
http://en.wikipedia.org/wiki/Containment_building
http://en.wikipedia.org/wiki/Boiling_water_reactor