Horizontal through hole facility

The hole liners and components are generally the same for this facility as for the beam holes previously discussed, the only difference being that there-is a complete liner for each end of the hole, each with a radiation door and other related liner components. The plug, however, presented more difficult problems than the plugs discussed in the foregoing section. For this reason a separate discussion -on the plug for the through hole is warranted. 

The cooling system for the beryllium shall be a single-pass system, i.e., the water enters at one side of the reactor and leares at the other side.. 

There shall be no blind water connections which wil have to be made np after insertion within the reactor strnctnre, and the complete cooling circuit for the ping shall be arranged to allow testing for leaks prior to insertion in the experimental hole. 

This dictates that one section of the ping shall contain a complete cooling-water line, which will extend from one side of the reactor to the other. 

A coolant return loop and a means for hookup to the experimental plug and associated equipment shall be prorided. This would then complete the desired single-pass cooling system. 

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Six horizontal beam holes, w through facility,, and some rabbit holes allow experiments. to be performed within 2 in. of the actiye lattice. In addition, where the highest possible fast fl.ux is reguiredi spsfre control rod holes and unused spaces in the active lattice can be utilized if desired.. 

To cool the beryllium section, one end of the extended water pipe is connected to the supply-water line the other end is connected to the drain line. In an attempt to forecast future demands of this facility, a coolant return loop is provided. The 8-in. horizontal graphite hole, HG-2, has. been chosen to serve as the coolant.return loop. It is ideal because it runs parallel to the through hole, HT-1, and also passes completely through the reactor. 

In this type of combustion facility pulverized coal is burned with air in a reactor in the form, for example, of a horizontal cyclone. In this reactor high temperatures of ca. 1600°C are achieved and the ash components of the coal are melted to form slag. The liquid slag collects on the reactor wall as a result of the fluid-flow characteristics in the reactor. It flows out of the reactor through the tap hole and is then granulated in a water bath. The waste gas is cooled in boilers, whereby high-pressure steam is produeed, which is used to drive steam turbines for power generation. 

The east wall of the reacjtor has. access to a. thermal c.pl m . which is provided with nine horizontal and two vertical access holes. Depending upon future demands, space is available through the west waT-l- for a shielding facility or another thermal column. 

The pneumatic rabbits provide the Materials Testing Reactor with facilities to irradiate small samples of material in the high-neutron fields of the reactor. The horizontal holes that constitute the pneuntatic rabbit facilities are HR-1, 2. 3, and 4- However, any beam hole can be adapted to provide additional shuttle facilities. Holes HR-3 and 4 are of 4 in. I.D. and extend inward only to the reactor tank. Holes HR 1 and 2, which are 1 in. in diameter, extend completely through the reactor and pass within 1 in. of the. active lattice (see Fig. 2.D). ... 

Alternative fuel transfer options. The LS-VHTR offers the unique refueling option of horizontal transfer of the SNF to a storage facility through a horizontal transport port near the top of the reactor vessel. This option is possible because of two characteristics of this design (1) short SNF block height (small hole size in the reactor vessel) and a low-pressure reactor in which horizontal transfer ports through the reactor vessel wall are a potentially viable option. This option is described below. 

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