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approximately 290 tons of refrigeration. The RSVC arena would use approximately 34% of this capacity at an estimated 150 harsepower. This is approximately the same harscpower that would he required ifthe RSVC arena had its own refrigeration system. I-iowever, it will likely be mare costly to start and stop the 450 harsepower motar on the oval's compressar than two 75 harsepower motars that would be used on a new single ice sheet system. In addition to the increased energy requirements of the compressars the brine pumps will be larger than required far a single ice sheet application in arder to �un�p the brine approximately 400 feet fro�n the oval's refrigeration room to the RSVC a��ena. This will change the typical harsepower o f the brine pump from 25 ]�p to approximately 35 hp. The temperature of the brine will increase mare than normal as it's pumped over atotal of 800 feet between the refrigeration room and the RSVC arena, lowering the efficiency of the refrigeration system. Cost Estimate The estimated construction cost to insta11800 feet of supply and return lines hetvveen the nval's refrigeration room and the RSVC arena ranges from $80,000 to $100,000 or 25% to 30% the cost of a new refrigeration system for the RSVC arena. Recommendation We do not recommend connecting the two systems togethcr at this time based on a fairly substantial capacity reduction in the oval's refrigeration system, the decrease in efficiency of the system, the lack of redundancy in refrigeration systems far the ice center, and the increased energy costs far the operation of the compressars and pumps over a refrigeration system far a single ice sheet. However, we do recommend revisiting this option at the time the RSVC Arena's refrigeration system is renovated. STEP 6- EVALUATION OF EXISTIl�TG RSVC ARENA ICE SYSTEM General The existing refrigeration system in the RSVC Arena was modified from an indirect refrigeration to a direct refrigeration system in 1979-19$0, The ariginal system was installed in 1969 with the construction o f the building. The rink currently operates year round. There ice rink floar is the standard 85' x 200' size with a sand base. During the walk through the system was operating under normal conditions. The ice sheet was in place so an inspection of the floar could not be conducted. Dasher Board System The existing dasher board system was installed during the 1979-1980 reconstruction project and is constructed of wood framing, a polyethylene cap rail and polyethylene facing atac! kick plate. The spectatar shielding is acrylic material. The existing system takes a great deal of maintenance to maintain and repair every year due to its age. The failure rate of wood board systems typically increase with age as the wood cracks and rots from temperature fluctuations and high moisture levels found in ice a�'et�as. Safety concerns increase with age as the structural integrity of the wood system is compromised and panel gaps and misalignments become mare prevalent. The deterioration and misalignment of the dasher board panels can cause playability issues as well.