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ECCS Emergency Core Cooling

EHRS - Emergency heat removal system ECCS - Emergency core cooling system FC - Forced circulation NC - Natural circulation FWP - Feedwater pump CP - Condensate pump... [Pg.257]

Enhanced safety following LOCA Passive ECCS (Emergency Core Cooling System) of enhanced effectiveness R D to be performed. [Pg.328]

FIG. 38. Objective tree for Level 3 of defence in depth (ECCS, emergency core cooling system, EFWS, emergency feedwater system). Safety principle (207) emergency heat removal. [Pg.57]

Enhanced safety following LOCA. Passive ECCS (emergency core cooling system) of enhanced effectiveness. No information provided... [Pg.348]

ECC Emergency core cooling RHRS Residual heat removal system... [Pg.65]

ECCS Emergency core cooling system RPV Reactor pressure vessel... [Pg.65]

Safety. A large inventory of radioactive fission products is present in any reactor fuel where the reactor has been operated for times on the order of months. In steady state, radioactive decay heat amounts to about 5% of fission heat, and continues after a reactor is shut down. If cooling is not provided, decay heat can melt fuel rods, causing release of the contents. Protection against a loss-of-coolant accident (LOCA), eg, a primary coolant pipe break, is required. Power reactors have an emergency core cooling system (ECCS) that comes into play upon initiation of a LOCA. [Pg.181]

Improved emergency core cooling (ECC) reliability by reduction in number of valves, auto change-over to recirculation phase, sustained low pressure conditioning, four heat exchangers and four pumps... [Pg.407]

Emergency core cooling system (ECCS) disconnected. Apparently this is not necessary for the turbo-alternator power rundown test as planned... [Pg.106]

The containment sump should be designed to permit mixing of emergency core cooling system (ECCS) and spray solutions. Drains to the engineered safety features sump should be provided for all regions of the containment which would collect a significant quantity of the spray solution. Alternatively, allowance should be made for dead volumes in the determination of the pH of the sump solution and the quantities of additives injected. [Pg.402]

The reactor is assisted by the following Emergency Core Cooling Systems (ECCS) ... [Pg.412]

EMERGENCY CORE COOLING SYSTEM (Special Safety System) CSA Class 2 3 AECB R-9 SDE The ECC s> stem services to provide cooling lo ihc ruel in a FITS circuit loop that has expenenced a LOCA It consists ot passive high-pressure injection (prcs unzed tanks) lou pressure recirculaticxiArecovcrv portion (pumped)... [Pg.170]

See other pages where ECCS Emergency Core Cooling is mentioned: [Pg.461]    [Pg.367]    [Pg.2665]    [Pg.196]    [Pg.231]    [Pg.379]    [Pg.79]    [Pg.343]    [Pg.105]    [Pg.274]    [Pg.151]    [Pg.69]    [Pg.437]    [Pg.461]    [Pg.367]    [Pg.2665]    [Pg.196]    [Pg.231]    [Pg.379]    [Pg.79]    [Pg.343]    [Pg.105]    [Pg.274]    [Pg.151]    [Pg.69]    [Pg.437]    [Pg.217]    [Pg.423]    [Pg.424]    [Pg.320]    [Pg.311]    [Pg.169]    [Pg.127]    [Pg.82]    [Pg.15]    [Pg.45]    [Pg.52]    [Pg.96]    [Pg.35]    [Pg.7]    [Pg.151]    [Pg.151]    [Pg.2677]    [Pg.176]    [Pg.191]    [Pg.197]    [Pg.212]   


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