Suppression pool

General In comparison with design information on blowdown drums and cyclone separators, there is very httle information in the open technical hterature on the design of quench tanks in the Chernies industry. What is available deSs with the design of quench tanks (Sso called suppression pools) for condensation of steam or steam-water mixtures from nuclear reactor safety vSves. Information and criteria from quench tanks in the nuclear industry can be used for the design of quench tanks in the chemicS industry. There have been sev-... 

Scrub radioactive materials Suppression pool Containment spray system Scrub radioactive materials Suppression pool Containment spray system... 

Fig. 1.1-6 SWBR LOCA Response The suppression pool absorbs the blowdown energy, the reactor vessel is depressurized by the depressurization valves and then flooded by the...

Providing sufficient water in the GDCS and suppression pools to flood the... 

Below the Chernobyl reactor were water pools meant to capture and condense any steam released from a pipe break or any other failure in the containment rooms. A system of relief valves and ducts led from the containment rooms to these suppression pools. RBMK s were built in pairs ... 

Ceitain engineered safety features (containment sprays, suppression pools, ice condenscr.s i will effectively remove fission products regardless of form. Other ESF such as filters are less effective. 

The final three phenomena, items 11 through 13, are addressed in the containment performance models of MARCH, accounting for mass and energy additions to the containment, the burning of combustible gases, the effects of core sprays, ice condensers, and suppression pools. MARCH calculates only the containment loads it does not model the containment failure. 

Relevant only for a small fuel time constant and under low pressure Various modes of dynamic flow redistribution Occurs with steam injection into vapor suppression pools Very-low-frequency periodic process (-0.1 Hz)... 

Reactor 2, Steam separators 3. Inlet header 4. Main circulation pump 5. Outlet header 6. Pressure suppression pool 7, ECCS vessels 8, ECCS pumps for cooling damaged half of reactor 9. Heat exchangers 10. Clean condensate container 11. ECCS pumps for cooling undamaged half of reactor 12. De-aerator 13. Feed pump,... 

The suppression pool is supplied with heat exchangers to provide cooling in the event of prolonged operation. 

The RBMK reactor design had a complex containment system. Varions parts of the plant had containment structures around them designed to prevent the release of steam to the environment. If a part of the plant failed, the steam would be contained and diverted to the suppression pools where the steam would condense and any radioactivity would be trapped in the water. 

Pressure Suppression Pool as a Fission Product Cleanup System... 

The pressure-suppression type primary containment is a cylindrical concrete structure with an embedded steel liner type with two major compartments a drywell and wetwell. The lower part of wetwell volume is filled with water that works as the condensation pool, and the upper part is a gas compression chamber. The blow-down pipes from the safety relief valves are routed to the pressure suppression pool. 

Thermal power removed by various heat sinks including suppression pool... 

The blow-down of steam to the suppression pool passes through vertical concrete pathways to horizontal openings between drywell and wetwell. 

The relief pipes from the safety/relief valves are drawn into the suppression pool via the lower drywell rather than penetrating the drywell-wetwell intermediate floor. 

Each loop which is open to the containment, contains a drain line to the GDCS pool, and a vent discharge line the end of which is submerged in the pressure suppression pool. 

The PCCS loops are driven by the pressure difference created between the containment drywell and the suppression pool during a LOCA and require no sensing, control, logic or power actuated devices for operation. Together with the pressure suppression containment system, the three PCCS condensers limit containment pressure to less than its design pressure for at least 72 hours after a LOCA without make-up to the IC/PCC pool. 

Corium management ECCS/MS/CVWS Passive Any corium would have to penetrate four consecutive boundaries-namely, PHT, MS, CVWS and contamment pressure suppression pool... 

Fission product containment Pressure suppression pool Passive... 

As in the case of large-capacity plants, the reactor is depressurized by discharging steam to the pressure suppression pool via safety-relief valves actuated by diverse pilot valves of both active and passive design. A further diverse means for pressure relief is provide by rupture disks. Once the reactor pressure has been sufficiently reduced, water is able to flow by gravity into the RPV from an elevated pool, the core flooding pool. 

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