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In a typical depressurization system, the goal is typically reduce the pressure in the plant to less than 50% of the design pressure or to 7 barg, whichever is lower, within 15 minutes. [ 2 ] Disposal of blowdown fluids is generally to flare systems or, if safe to do so, non-fired blowdown drums .
The Automatic Depressurization System (ADS) consists of a series of valves which open to vent steam several feet under the surface of a large pool of liquid water (known as the wetwell or torus) in pressure suppression type containments (typically used in boiling water reactor designs), or directly into the primary containment structure in ...
The Reactor Protection System (RPS) is a system, computerized in later BWR models, that is designed to automatically, rapidly, and completely shut down and make safe the Nuclear Steam Supply System (NSSS – the reactor pressure vessel, pumps, and water/steam piping within the containment) if some event occurs that could result in the reactor entering an unsafe operating condition.
ESBWR's passive safety systems include a combination of three systems that allow for the efficient transfer of decay heat (created from nuclear decay) from the reactor to pools of water outside containment – the Isolation Condenser System, the Gravity Driven Cooling System, and the Passive Containment Cooling System. These systems utilize ...
More water is flashed into steam which is also subsequently condensed into more salt-free water. This sequential use of multiple flash evaporation stages is continued until the design objectives of the system are met. A large part of the world's installed desalination capacity uses multi-stage flash distillation.
Lights-out manufacturing is the methodology of fully automating the production of goods at factories and other industrial facilities, such as to require no human presence on-site. Many of these factories are considered to be able to run "with the lights off," but few run exclusively lights-out production.
In 2017, a $59 million two-year contract was awarded by the State of California to Florida-based Franwell to create the system and supply RFID tags. [1] The system was first developed for Colorado in 2011. [2] As of mid-2017, Franwell's system was in use in California, Colorado, Oregon, Maryland, Alaska, and Michigan. [3]
A normally closed actuated blowdown valve (BDV) opens and allows vapour to pass from the vessel to relief system or blowdown stack. [1] BDVs are configured to open in the event of a failure of the control or actuation system. A restriction orifice plate downstream of the BDV ensures the vessel is blowndown in an appropriate time period.