Evaluation of Heat Removal from RBMK-1500 Core Using Control Rods Cooling Circuit

Figure 12

MCP pressure header break with failure of ECCS (except ECCS hydro accumulators): (1) pressure header break; (2) discharge of coolant from drum separators in the affected loop; (3) discharge of coolant from lower part of reactor cooling circuit in the affected loop; (4, 5) supply of water from ECCS hydroaccumulators; (6) supply of steam from DSs in in the intact loop; (7) circuit for cooling of rods in reactor control and protection system.