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The larger VVER-1000 was developed after 1975 and is a four-loop system housed in a containment-type structure with a spray steam suppression system (Emergency Core Cooling System). VVER reactor designs have been elaborated to incorporate automatic control, passive safety and containment systems associated with Western generation III reactors .
The emergency core cooling system of the VVER-1200/523 consists of active and passive systems. [43] Two of the active safety systems that ensure cooling are high pressure injection system (HPIS), and low pressure injection system (LPIS). [43] [42] Both these systems have two independent trains with 100% redundancy. [44]
The VVER-TOI project shows, as a basis variant, the configuration based on the two channel structure of active safety systems without internal backup, and four channel structure of passive safety systems. The passive safety system provides a 72 hour period requiring no operator intervention. [3] The profile of the active safety systems is as ...
Redundant systems are installed to prevent a meltdown, but as a matter of policy, one is assumed to occur and thus the requirement for a containment building. For design purposes, the reactor vessel's piping is assumed to be breached, causing a "LOCA" (Loss Of Coolant Accident) where the water in the reactor vessel is released to the atmosphere ...
TIME's Top 100 Photos of 2023 ... Visitors to Mount Carmel near Waco, Texas, the site of the former compound of the Branch Davidian sect, on March 24. ... Trent Grisham collides with the wall as ...
This category includes power stations with the VVER-440, VVER-1000, VVER-1200 reactors. Pages in category "Nuclear power stations using VVER reactors" The following 33 pages are in this category, out of 33 total.
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