Attachment A- Statement_of_Work_(Booster Pump Replacement).docx.pdf

TASK ORDER - STATEMENT OF WORK

FOR

U.S. Consulate

Supply & Installation of Package Booster Pump Units.

Project:

Cape Town, South Africa

October 27th, 2025

U.S. Department of State - Bureau of Overseas Buildings Operations

TASK ORDER - STATEMENT OF WORK

for

1. General Summary of Services Required:

The US Consulate requests bids from vendors active in the Pump Engineering Services or Construction field with a minimum of ten (10) years of recent proven experience for the supply, installation and commissioning of two package booster pump units.

• Triplex Booster Pump Unit (Grundfos or similar) for potable water service.

• Duplex Booster Pump Unit (Grundfos or similar) for cooling tower make-up water.

Triplex Booster Pump Mode of Operation.

The Variable Speed Triplex Booster Pump System serves to transfer water from the Potable

Water Tanks to the drinking water consumption points on the facility. The currently installed unit controls three 7.5kW Grundfos CR32 multistage pumps. The pumps are multi-staged variable speed drive controlled to ensure that the requisite supply pressure and flow rate on the potable water line is maintained at 6 bar. Initially one pump will be operational and variably controlling to meet water demand. Should the demand increase to around 80% of the first pump’s flow capacity, a second pump is started to supplement the capacity of the running pump. The two pumps will then regulate to meet the demand. As demand once again decreases, one of the pumps will shut down with only one remaining operational. The pump control panel also schedules the pumps to ensure equal runtime on each of the units.

Duplex Booster Pump Mode of Operation.

The Variable Speed Duplex Booster Pump System serves to transfer water from the Raw

Water Tanks to the two Cooling Tower Sumps. The currently installed unit controls two

2.2kW Grundfos CR15-2 pumps. The pumps are multi-staged variable speed drive controlled to ensure that the requisite supply pressure and flow rate on the make-up water line is maintained at 6 bar. One pump is sufficient to meet the cooling tower make-up water demand. The pump control panel schedules the pumps to ensure equal runtime on each of the units. Should a currently running pump experience a fault, the control panel will shutdown the faulty unit and start the second pump. This pump will remain operational until the fault on the first pump is cleared.

Scope of Work

1. The contractor shall provide all tools, material and labour for performing this work in its entirety.

2. Disconnect the currently installed Potable Water Triplex Booster (3x Grundfos CR32 pumps, manifold & control unit) both mechanically and electrically and remove from the Pump Room and hand over to Consulate Maintenance Personnel.

3. Disconnect the currently installed Cooling Tower Make-Up Water Duplex Booster (2x Grundfos CR15-2 pumps, manifold & control unit) both mechanically and electrically and remove from the Pump Room and hand over to Consulate Maintenance Personnel.

4. Clean the mounting base areas where the old Booster Station and pumps were located.

5. Apply two new coats of paint to the mounting bases, matching that of surrounding mounting bases.

6. Supply and install a new Grundfos Triplex Booster or equivalent system to match the following duty: 3x VSD Controlled Pumps each having a maximum flow rate of 30m3/hr.

and a head of 50.8m. The pump curve for the CR32 is attached.

7. Supply and install a new Grundfos Duplex Booster or equivalent system to match the following duty: 2x VSD Controlled Pumps each having a maximum flow rate of 17m3/hr.

and a head of 22.0m. The pump curve for the CR15-2 is attached.

8. Piping modifications may be necessary if an alternate pump booster to that currently installed is offered.

9. Should piping modifications be required, all welding shall be carried out only by certified welders holding a valid certification.

10. All welding shall be performed using the Gas Tungsten Arc Welding (GTAW) process.

11. A copy of the welders’ certification shall be provided to the engineer on site prior to any welding being performed.

12. The contractor shall provide the engineer with a written welding procedure, complete with sketches of the weld cross-section showing root weld and number of passes; the welding machine current and shielding gas flow rate.

13. Should additional piping be required to perform the installation, the contractor shall provide the material data sheets/mill certificates to the engineer to verify compatibility with existing piping prior to proceeding with any welding.

14. A proof weld is required to verify the acceptability of welding procedure prior to proceeding with the actual welds.

15. Upon completion of all welding, the welds shall be cleaned then visually and dye penetrant checked for soundness by a Non-Destructive Testing (NDT) Technician who shall provide a written report on the acceptability or not of all welds carried out to the engineer on site.

16. All defective welds shall be reworked and retested.

17. No further assembly shall be performed until all welds have been approved as acceptable in writing by the NDT Technician.

18. Upon completion of all construction work, flush all piping with clean water prior to connecting the system mechanically to the suction and discharge lines.

19. Repaint all water piping to match the blue paint colour of existing piping.

20. All electrical work shall be performed only by qualified electrical personnel, the qualifications of which shall be furnished to the engineer.

21. Perform all standard electrical acceptance tests for the system prior to energizing the system. Carry out an insulation test on the supply cable. Verify the correct functioning of the circuit breaker and isolator. Verify the presence of three-phase voltage, frequency and phase rotation. Measure and record the bonding resistance. The electrical test results shall be recorded and be witnessed by the engineer on site.

22. Electrically connect the new booster stations to the circuit breaker in the distribution board in the Pump Room.

23. The contractor shall issue an electrical certificate of compliance for all electrical work related to the new booster pump installation.

24. Update the legend in the electrical distribution board.

25. Provide a single line electrical diagram for each of the booster stations.

26. Provide OEM Electrical Diagrams for the internal wiring of each of the Booster Stations.

27. The commissioning of the booster stations shall be performed by a Technician of the Original

Equipment Manufacturer.

28. This commissioning shall entail the setting of all operating setpoints, verification of all pump operating parameters and the functioning of protection, such as dry run and phase failure protection amongst others.

29. The commissioning findings shall be documented in writing by the OEM Technician to form part of the project file.

30. Any non-compliance identified shall be corrected by the contractor.

31. The booster station shall come with a manufacturer’s warranty to operate defect free for a period of twelve (12) months. This manufacturer’s warranty shall be transferred to the US Consulate.

32. Additionally, the contractor shall provide a twelve (12) month warranty for all workmanship and materials provided in performing this scope of work.

33. The warranty period shall commence upon the date of official handover.

34. The contractor shall compile a project file containing the following information: names, surnames and contact details of contractor management that were involved in the project, manufacturers data sheets and catalogues for all components supplied and used on the project, operating manuals for all major items supplied, hardcopy Cad piping and instrumentation diagrams for the installation showing all components, hardcopy Cad electrical single line diagrams, certificates of compliance for electrical and NDT inspections, all warrantee certificates. The project file shall have a table of contents page followed by each of the listed items with a separation board between each section.

Health and Safety Requirements

35. All works shall comply with U.S. Consulate safety and security requirements.

36. The contractor shall make allowance for a Health & Safety File as part of his bid.

37. All wiring shall comply with SANS 10142 Wiring Code.

38. All plumbing work shall comply to SANS 10252 & 10254

39. The contractor shall provide all personal protective equipment (PPE) for his staff.

40. The contractor shall dispose of all project waste in a responsible manner at a recognized landfill or recycling facility.

2. Contract Details.

The purpose of this request for proposal is to award a purchase order to the qualified vendor who provides a proposal that credibly addresses the requirements identified in the description above and is the lowest priced of all technically acceptable offers. The Government may award the contract based on the initial offer without discussion.

3. Payment terms. The U.S. Consulate will make no provision for fluctuations in price or exchange rates after the order has been placed. If your price is dependent on these fluctuations, you MUST make provision for possible increases in your quoted price. Payment will be made via EFT into the company’s bank account, within 30 days of delivery of goods/services and receipt of proper Invoice, not before. By submitting a Quotation, vendors are agreeing to waive any of their own company’s payment terms that contradict with those of the U.S. Government. *Note: No advanced/deposit payments permitted. However, progress payments will be permitted.

BOOSTER PUMP CURVES

• CR32-4 Potable Water Booster

• Cooling Tower Make-Up Water Booster

***END OF STATEMENT OF WORK***