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REQUEST FOR COUNCIL ACTION DATE: 12/20/04 ITEM NO: 6. DepartmentApproval: ManagerReviewed: AgendaSection: � tem Description: Update on the Rose`ville Skating Center/OVAL Refrigeration System BACKGROUND On November ��"� Council authorized staff to proceed with plugging vulnerable tubes in the chiller barrel and attempt to put the refrigeration system in service for the 04-05 season.. Recall, the chiller barrel has 831 tubes and the plan was to plug all of the recommended tubes that had a 70% wall loss and greater. UPDATE The plugging process was completed, but unfortunately, sustaining pressure for any reasonable length of time was not accomplished. Several of the tubes with a lesser wall loss have begun to fail during simulated pressure tests. The unit has not been fully re-assembled. Staff has little confidence with the patch work approach. The Chiller has not held pressure long enough to have reasonable confidence that it will operated successfullyfor an extended period of time. Staff is also concerned about further damage that may occur to other pieces of equipment should the system substantiallyfail while in operation. The Chiller Barrel is only one part of the refrigeration system. Like the air conditioner or radiator of your car; it works with the pumps, compressors, evaporators, etc. The remainder is currently working fine but is aging and will require maintenance in the future that we must plan. Meanwhile, staff has moved forward with a natural ice season at the OVAL and began flooding the skating surface. So far, that process is going okay. This is our first experience with natural ice on that surface. We will keep the Council informed of progress. NEXT STEPS Council indicated a desire to consider creating an OVAL Task Force to address the future of the OVAL. Given that there is no cost-effective way this late in the