Monorail Storage Area

Radioactive material inventories in each remote radioactive material storage area (i.e.. Building 6596 east highbay/Chapel, Building 6597, and the monorail storage holes) will be limited by procedure (ref. Table 3C-11, Prevention Features. Administrative) to less than the Hazard Category 2 threshold values in accordance with DOE-STD-1027-92 (DOE 1992c). 

The HCF has several areas in which the potential for an inadvertent criticality exists. These are the SCBs (Zone 1), the entrance to the SCBs (Zone 2), Zone 2A, Rooms 108, 109, 111, 112, 113, 113A, 114, B6596, B6597, and the monorail storage holes. Chapter 2 describes each of these areas and the processes accomplished in each area. 

Criticality in various experiment assemblies -Flooding of monorail storage holes or the high bay areas -Gross procedural error -Gross rearrangement of fissile material -Small masses of fissile material in large assemblies preclude criticality. -Monorail holes topped by weather seal covers. 

Is there a suppression system Yes 0 No If yes, describe type, layout, capability, etc. Buildings 6596 and 6597 have automatic fire protection, sprinkler systems throughout the high bay areas, at the ceiling level. The monorail storage holes do not have fibre suppression systems of anv kind but they do have inherent fire dampers due to their in ground location and steel liner construction. ... 

Due to the absence of both combustible material and ignition sources in the monorail storage holes, only fires in Building 6596 and Building 6597 high bay radioactive material storage areas will be considered. 

Afrer the assemblies have been processed into bundles in the MB, th are transfenred to the HBBS for storage prior to shipping. The slug/soap buckets are also moved to the bucket storage area. A motor-operated carriage is used on an overhead monorail system to traitsport foel into and out ofthe HBBS. Hus twin-hook hoist system contains an automatic load cut-off mechanism in case it acddentally lifts a section ofthe tack (Ref 2-4, Section 9.1.2). 

---