Shield cooling

Automatic reactor power reduction in the event of low flow or high temperature in (lie end shield cooling system... 

A gap of 30 mm is provided between the two concrete to take care of differential thermal expansion. The biological shield concrete is cooled by circulating water through 180 coils embedded in concrete. The biological shield cooling (BSC) system has two distribution headers, each have 100% capacity. Each header has six sub-headers with individual isolation valves. 

The top cooling pipes run from side to side on the reactor and the side shield cooling pipes run front to rear. 

Core debris configuration (core catcher) Calandria shell is the core catcher, and ultimately the calandria vault Debris cooling system (name) Moderator system and shield cooling system (the latter provides calandria vault cooling as well)... 

Shield Cooling Control Rod Cooling and Reactor Gas System... 

The results of the MULTISORD calculations were that for the cold duct the 10 n/cm /s flux threshold was reached approximately half way along the third straight section situated at the lowest level of the building, and for the hot duct it was reached at the start of the third strmght section situated at the top of the building under the shield cooling air stack. Hus was taken into account in the following section which describes the Monte Carlo calculations. 

Are the front and rear face thermal shields cooled How ... 

Is biological shield cooling provided at all reactors Explain. 

The outside of the pressure vessel is covered by a layer of thermal insulation consisting of a stainless steel wool which is held in place by stainless steel bands and wire mesh. A dead air space separates the steel wool from the inner smface of the cavity steel cylinder, approximately 81 feet (2.6 meters) in diameter and made of 3/4-inch (1.9 centimeters) thick plate, which constitutes the inner boundary of the cell. Lead bricks are stacked against the outside of the cylinder to provide a gamma-radiation shield. Shield cooling coils made of copper tubing are fastened to the steel cylinder beneath the lead. 

Loss of shield cooling could occur through a break in the piping, a loss of forced circulation or a loss of secondary side cooling water. 

Shield cooling. The concrete surrounding the primary cells... 

Reactor heating and cooling system Dump tank heating and cooling systems Primary system capsule area ventilating system Primary system reactor cell cooling system Shield cooling system... 

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