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chillers will allow more flexibility in matching refrigeration demand swings and may make <br />this option more feasible. <br />Scope af Services <br />As Ice Rink Engineers and Consultants Stevens Engineerswill provide the specialized design required for <br />renovating the existing chiller vessel and improving the monitoring and serviceabilityof the system <br />Stevens Engineers will provide a step by step design approach as described below. <br />Included in this proposal is a separatefee forevaluating the option of installing a plate and frame chiller <br />type chiller system in place of reconditioning the existing shell and tube condensertype chillersystem and <br />for evaluating the option of connecting the RSVC Arena's ice rink floor to the Oval's refrigeration system. <br />Step �— Collect Information on Existing System <br />We will meet with the City staff to: <br />Discuss overall scope of the project <br />Discuss history of problems with the refrigeration system. <br />Discuss desired improvementsto the refrigerationsystem. <br />■ Obtain a copy of the report regarding the chiller tube evaluation. <br />* Obtain a copy of the record plans of the ice system. <br />* Obtain a copy of the refrigeration equipmentshop drawings. <br />■ Walk through the facilitywith City Staff. <br />Verify the accuracy of the shop drawings and record drawings of the refrigeration system. <br />� Verify the accuracy of the room layout and clearances around the chillerfor replacing chiller tubes. <br />Step 2—Analysis and Evaluation <br />During this step we will: <br />Evaluate the information we gathered during the site visit. <br />■ Evaluate the feasibility of renovating the existing chiller vessel. <br />� Write a letter report including and discussing the following: <br />r- Steps involvedin the chillerrenovation process including tube replacement, vessel shell <br />inspectionand potential repair, and building modifications required for chillertube access. <br />� Options for renovation including standard steel tubes vs. stainless steel tubes, and any <br />other materials recommended by the manufacturer. Compare heat transferefficiency, cost <br />and life cycle of each material. <br />_;� Advantages and disadvantages of renovating options vs. replacing the vessel including life <br />expectancy, efficiency and cost. <br />. Estimate of probable construction costs for the chiller renovation. <br />r� Estimate of probable construction costs for a new chiller vessel. <br />Estimate of probable construction costs for system monitoring and ���+i�i�� <br />improvements. <br />Review testing results of the existing brine solution and recommend cleaning or <br />replacement. <br />�� Recommend routine testing procedures for the brine solution <br />Review the report with the City prior to finalizing the construction documents. <br />Mr. Lonnie Brakke, Director of Parks and Recreation <br />January 26,2005 Page 3 of 7 <br />