Carriage Water Ancillaries Supply and Installation

Rand Water, South Africa's largest bulk potable water utility, has issued Request for Quotation RFQ10420695 for the manufacture, supply, delivery, installation and putting into service of carriage water ancillaries at its Eikenhof Pumping Station in Johannesburg South, Gauteng. The works form part of an upgrade to the carriage water system, which conveys water through the station's pipelines. The scope replaces existing butt and fusion welded joints on the 110mm HDPE line with compression fittings, replaces existing pressure reducing valves (PRVs) with new pilot-operated PRVs, and replaces existing spring-loaded pressure safety valves (PSVs) with new compatible units. Supporting drawings include P&IDs and isometric drawings, and the bill of quantities covers HDPE compression fittings and elbows (PN16), 110mm ball valves, pressure gauges, DN200 flanged PRVs (PN35 and PN16) and DN100/DN125 spring-loaded PSVs.

Additional work includes decommissioning of redundant A19, B7 and B14 chlorine carriage water vacuum lines, pressure testing of the entire system to PN16, commissioning, Factory Acceptance Testing of the PRVs and PSVs, as-built drawings, operation and maintenance manuals, and a provisional sum for additional works as instructed by the Engineer. The work must comply with the Occupational Health and Safety Act (Act 85 of 1993), ASME B31.3 and SANS 10085 for scaffolding. Most work takes place within a live plant, so the contractor must minimise disruption and bear the cost of repairing any damage. A minimum 12-month workmanship guarantee and a 24-hour callout response during the defect liability period are required, with time-stamped before-and-after photos for all repairs. The contractor must also hold ISO 9001 certification or equivalent.

Tenderers must be registered with the CIDB at a 3ME grading or higher, and submit a functionality response covering previous experience, human resource capacity, equipment capacity and a six-week programme. Bids are evaluated on an 80/20 price and B-BBEE preference basis, with a minimum functionality score of 70%. The contract is expected to be placed by 30 November 2026, with all equipment handed over by 29 January 2027. A non-compulsory briefing session takes place on 5 November 2026 at 10:30 at the Eikenhof site. The closing date is 13 November 2026 at 16:00, and submissions must be made through the Rand Water Online Bids Application.