Tenders are hereby invited for the following: auxiliary cooling open cycle chemical supply and service at Kusile Power Station for a period of 5 years. Scope: The following work will be the Contractor’s responsibility for East and West Auxiliary open cooling systems for the duration of the contract: • Biocide Oxidizing – Supply, delivery, offloading, dosing, replacement, monitoring and control; • Biocide Non-oxidizing - Supply, delivery, offloading, dosing, replacement, monitoring and control; • Bio-dispersant - Supply, delivery, offloading, dosing, monitoring, replacement and control; • Scale/Corrosion inhibitor - Supply, delivery, offloading, dosing, replacement, monitoring and control; • Chemical dosing equipment – Weekly inspections and maintenance; • Weekly cooling water analysis - Report compilation and submittal; • Monthly cooling water microbiological analysis – Total aerobic/anaerobic bacteria and H2S producers; • Monthly corrosion rate analysis – Report compilation and submittal; • Six monthly cooling water microbiological analysis – Report compilation and submittal; • Quarterly Legionella Analysis - Report compilation and submittal; • The contractor must supply and install corrosion coupon on the East cooling system only; • The contractor must supply Chemical dosing equipment for East cooling system– erection, storage tanks, dosing pumps and piping. West cooling system chemical dosing equipment has already been installed. The contractor must supply the chemicals, determine the dosing rate & time interval and monitor the chemical conditions (weekly) of both East and West Auxiliary open cooling systems to meet the specifications. (Tender №83535461)