57 Transmitter Room and Electric Service Areas. The area north and west of the reactor c e l l annulus a t elevation 831 ft (west tunnel) connects by a narrow passage t o a similar area north and east of the reactor c e l l annulus (east tunnel). These extend eastward tinder the 8ccO-ft floor t o a 24-in.-thick concrete wall 1 2 f t north of column l i n e 6. This e n t i r e area i s called the south e l e c t r i c service area. Six penetrations from the reactor c e l l and eighteen from the drain tank c e l l temninate i n t h i s area. The w a l l s , except f o r those joining the reactor o r drain tank cells, are located below ground level. The ceiling, which connects with the transmitter room, i s 24-in.-thick reinforced concrete with a 3-ft 7-1/2-in. by 6-ft 7-1/2-in. by 24-in0-thick concrete plug f o r access t o the area. This plug has a 4- by 12-in. offset on a l l sides f o r shielding. The north e l e c t r i c service area i s located north of the 24-in.-thick concrete w a l l mentioned above. The floor of t h i s room i s a t the 824-ft elevation. Many of the drain tank c e l l penetrations terminate i n t h i s area a s well a s some f r m the spare c e l l . The ceiling of t h i s area and the floor of the transmitter room above i s 2- t o 4-in.-thick reinforced concrete poured on "Q" decking No. 3-16. Containment i s by controlled ventilation. A 2- by 3-ft manhole with a hinged s t e e l door provides access from the transmitter room. The floor of the transmitter room i s a t the 8ccO-f-t elevation. The 5-in. floor of the high bay (elevation, 852 f t ) i s the ceiling of the transmitter room. A 5-ft by 9-ft 3-1/2-in. plug can be removed from the high-bay floor so t h a t the high-bay crane can be used t o remove the shielding plug on the 8ccO-ft l e v e l between the transmitter room and the south e l e c t r i c service area. This room i s approximately 16 by 20 f t and cont a i n s the leak detector system and instrwnentation f o r the drain tank weigh c e l l s , pump l e v e l and speed, sump level, component cooling a i r , etc. Auxiliary Cells. Six smaller c e l l s are located between columns 2-5 and A-C. Removable concrete blocks provide access from the high-bay area a t the 852-ft elevation. Containment of each i s by control of ventilation and discharge of the a i r through the f i l t e r s t o the stack. Descriptions of t h e i r projected uses are given below. Fuel Processing C e l l - The fuel storage tank and other i n - c e l l equipment f o r hydrofluorinating or fluorinating the f'uel or flush s a l t are l o cated i n t h i s c e l l . The absorber cubicle i s located e a s t of t h i s c e l l a t the 852-ft level.
Decontamination Cell This c e l l contains a decontamination tank. Both tank and c e l l are used f o r underwater maintenance and storage of contaminated equipment.
The l i q u i d waste tank, sand f i l t e r , and c e l l sump L i q ~ dWaste Cell j e t block valves are located i n t h i s c e l l . Remote Maintenance Cell -The l i q u i d waste pump and waste tank exhaust blower are located i n t h i s cell. It w i l l a l s o be used as a remote maintenance practice c e l l .