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chillers will allow more flexibility in matching refrigeration demand swings and may make <br />this �pfion more feasible. <br />Scope of Services <br />As Ice Rink Engineers and ConsultantsStevens Engineers will provide the specialized design required fo� <br />renovating the existing chiller vessel and improving the monitoring and serviceability of the sysi�m. <br />Stevens Engineers w��l provide a step by step design approach as described below <br />Included in this proposal is a separate fee for evaluating the option of installing a plate and frame chiller <br />type chiller system in place of reconditioningthe 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 f— Collectlnformation on Existing System <br />We will meet with the City staff to: <br />■ Discuss overall scope of the project <br /># Discuss E���tory of problems with the refrigeration system. <br />Discuss desired improvements to the refrigeration system <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 equipment sh�p �1raw+n�s. <br />Walk through the facility �ifh� 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 chiller for 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 chillervessel. <br />� Write a letter report including and discussing the following: <br />� Steps involved in the chiller renovation process including tube replacement, vessel shell <br />insp�ckiar� and potential repair, and building modifications required for chillertube access. <br />c� Options for renovation including standard steel tubes vs, stainless steel tubes, and any <br />other materials recommended by the manufacturer. Compare heat transfer efficiency, cost <br />and life cycle of each material. <br />�; Advantages and disadvantagesof renovating options vs. replacing the vessel including life <br />expectancy, efficiency and cost. <br />,; Estimate of probable construction costs for the chiller renovation. <br />,:: Estimate of probable constructioncosts for a new chiller vessel. <br />-� Estimate of probable constructioncosts for system monitoring and s�rvicin� <br />improvements. <br />�ti Reviewtesting results of the existing brine soiutiqrr and recommend cleaning or <br />replacement. <br />-� Recommend routine testing procedures for the brine solution <br />' Reviewthe reportwith the City priorto finalizingthe constructiondocuments. <br />Mr. Lonnie Brokke, Directorof Parks and Recreation <br />January 26,2005 Page 3 of 7 <br />