Final Safety Analysis Report (FSAR) for Building 332, Increment III

Abstract

18 to improve the finish on the internal walls so that it will be easier to decontaminate them. *21 to match the filled floor grade by extending the sidewall drain and raising the utility ports. *23 to determine if the floor sag would decrease the floor's seismic response below. the design base seismic requirements. *24 to fill the low sections in the first floor so that the floor surface will meet the minimum design criteria for plutonium facilities. 26 to prevent contamination of the wall interiors at the wall penetrations by installing leak-tight, Class "C" ducting at these penetrations. 28 to repair cr~~ks in the basement floor curbs and to seal cracks between curbs and the building walls. This was due to the plastic vapor barrier installed between the curbs and the walls. This barrier exaggerated the shrinkage in the concrete curbs which resulted in cracks in the curbs and cracks between the curbs and the walls. These cracks had to be sealed to prevent areas from possible coptamination by plutonium. 30 to reduec the flow ratP of fire sprinklers to that amount which can be handled by the room drain and basement collection system. This will minimize spread of ~ontaminated water and eliminate the criticality potential of ponded water in case of a fire. Sufficient.water wuuld still be supplied to quench the fire. 32 to upgrade the fire sprinkler hangers to meet the design base seismic requirements. 35 to upgrade the• pipe and duct hangers to meet the design base seismic requirements. 2-3 * After the first floor was poured, it was surveyed and found to be low in the center. The design was rechecked by the Architect-Engineer firm (Braun). It was determined that the floor had been designed to code regulations. A finite elements calculation showed that the floor would indeed sag between 1 and 2 inches. Braun's analysis of the poured floor showed that the floor will withstand the design basis earthquake. Since the upper surface of the floor was low, it was necessary to bring it to gradQ with an t!poxy and sand m:f'K"tt.trli. .This iuaLer1a.l. added to the top of .the floor made it necessary to relocate the floor ports for wires and utility lines. 2-4 '"J Table 2-2 Significant changes or modifications in Building 322-Increment III, since acceptance by LLL, that might bear on the safety of the structure or the operations conducted therein. Job/Purchase Order No. Reason for change and work performed J.O. 277690 to protect personnel and reduce heat release to room. The emergency generator turbine exhaust muffler and stack were insulated. J.O. 277700 to provide pressure equalization between HEPA filter plenum air lock and filter section when the access door between them is opened. Holes were cut in wall of each plenum section and a pipe line ball valve was installed on air lock side. J.O. 277920 to remove apparent iron oxide from nitrogen tube banks and manifold piping. This helps to prevent critical control instruments from malfunctioning and maintains pressure on fire water t•anks when standby instrument air is required...