6.3. SR 08-13-2012 - Laserfiche WebLink

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ELK RIVER ICE ARENA - ICE SYSTEM EVALUATION AND RECOMMENDATIONS • The ice rink floor was replaced in 2004 with a new direct refrigeration ice rink floor of similar design to the original floor. The floor, which measures 85 feet x 185 feet, is slightly smaller than the standard NHL size of 85 feet x 200 feet. The 8 -year old rink floor consists of: 3 -4 inches of floor insulation; % inch steel tubing installed at 4 inches on- center with welded connections; and a 5 inch of reinforced concrete. It was very typical for the rink floors, in a Holmsten Rink System, to be the first components to fail. There are no reported problems with the existing rink floor or with ice quality at this time. • The existing dasher board system was installed new in 2004. It is a steel framed system with a supported tempered glass system. The system is in very condition and should have life expectancy of approximately 20 -25 years. • The existing refrigeration room for Rink 1 is very small. The room is not equipped with mechanical ventilation and refrigerant leak detection systems and there does not appear to be an emergency stop switch or ventilation switch near the exterior door as is required by code. These systems are addressed in the mechanical system review. Rink 2: • The operational season is typically year round. Approximately every other year the rink is taken down for one month to perform maintenance on the ice rink floor and system. • Rink 2 is also served by a direct refrigeration system manufactured by Holmsten Ice Rinks. The major of the components include two (2) 8- cylinder York compressors, one (1) low pressure receiver, three (3) pumper drum vessels and one (1) motor control center. The refrigeration was purchased used 15 -years ago and is believed to be 28- 30 -years old exceeding its expected life of 25 -30 years. The system is in fair condition. As with the Rink 1 Holmsten Ice Rink system, it's becoming more difficult to maintain with its outdated electrical and control systems, discontinued compressors units, etc. There have also been some on- going, fairly significant, problems with the system such as: oil return problems which relates to ice quality concerns; compressor shaft seal problems; R -22 leaks in the refrigeration system; vent line damage; etc. UStevens 11 r:'V1 NWF $ 'I '�NNHW7