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Lesotho Phase II dam and tunnel shortlists 30 Jan 2020
After attracting a high level of interest for prequalification, six groups have been shortlisted to bid for the Polihali dam and the transfer tunnel contracts of the Lesotho Highlands Water Project Phase II. The shortlists for both contracts are dominated by construction companies from China.
Fig 1. 38km long transfer tunnel will link the new Polihali reservoir to the existing Phase I Katse reservoir
Location of the Polihali Dam on the Senqu River
From the 12 applicants that prequalified for Contract 4021 for the 38km long x 5m diameter gravity transfer tunnel that will connect the new reservoir at Polihali with the existing Phase I project reservoir at Katse (Fig 1), the following six have been shortlisted:
1. Sinohydro-UMSO-Nthane Joint Venture
- Sinohydro Corporation (China)
- UMSO Construction (South Africa)
- Nthane Brothers (Lesotho)
Subcontractors (Tier 3)
- Sinohydro Bureau 6 (China)
2. Senqu River Joint Venture
- China Communications Construction (China)
- China Gezhouba Group (China)
- Raubex Construction (South Africa)
- ENZA Construction (South Africa)
Subcontractors (Tier 2)
- Champ Construction (Lesotho)
- Mafeteng Concrete Blocks & Building Construction (Lesotho)
- NM Khojane Construction (Lesotho)
- SB Construction (Lesotho)
Subcontractors (Tier 3)
- Murray and Roberts Cementation (South Africa)
- Hunan Nanling Civil Explosion Engineering (China)
- Zhejiang Tunnel Engineering Group (China)
3. Polihali Transfer Tunnel MVR Joint Venture
- Mota-Engil Construction South Africa (South Africa)
- Mota-Engil Engenharia Construcão (Portugal)
- Vinci Construction Grands Projects (France)
- RAZEL - BEC (France)
Subcontractors (Tier 2)
- Ferreira Investments (Lesotho)
- Tim Plant Hire (Lesotho)
- Main Street 699 (South Africa)
Subcontractors (Tier 3)
- Redpath Mining South Africa (South Africa)
- Redpath USA Corporation (USA)
4. Wan Shui Joint Venture
- Shanxi Hydraulic Engineering Construction Bureau (China)
- Shanxi Yellow River Water Industry Group Corporation (China)
- Setheo Engineering (South Africa)
Subcontractors (Tier 2)
- Nthonyana Building Construction Company (Lesotho)
5. CBSL Tunnel Joint Venture
- China Railway International Group (China)
- China Railway Tunnel Group (China)
- Odebrecht Engenharia e Construção (Brazil)
- Concor Construction (South Africa)
Subcontractors (Tier 2)
- EXR Construction (Lesotho)
- Concor Construction (South Africa)
- KR Holdings Company (Lesotho)
- Maru-a-Pula Mining and Construction (Lesotho)
Subcontractors (Tier 3)
- Hubei Haosheng Blasting Engineering (China)
- Norconsult (Norway)
- Murray & Roberts Cementation (South Africa)
- Shaft Sinkers Mining (South Africa)
6. Sunshine Tunnel Joint Venture
- Salini Impregilo (Italy)
- Stefanutti Stocks (South Africa)
- AXSYS Projects (South Africa)
- LLSM Joint Venture of
- Lephema Executive Transport (Lesotho)
- LSP Construction (Lesotho)
- Matekane Mining Investment Co (Lesotho)
Of the eight applicants that participated in the prequalification exercise for construction of the 165m high concrete-faced rockfill Polihali dam and appurtenant works under Contract 4020, the following six have been shortlisted:
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1. Senqu River Joint Venture
Subcontractors (Tier 2)
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2. Mota – Engil Polihali Dam Joint Venture
Subcontractors (Tier 2)
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3. Sinohydro-UMSO-Nthane Joint Venture
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4. CWE-SCIG-VUMANI Joint Venture
Subcontractors (Tier 2)
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5. CBSL Dam Joint Venture
Subcontractors (Tier 2)
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6. Sunshine Tunnel Joint Venture
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In the meantime, drill+blast excavation of the Polihali dam diversion tunnels is progressing following award of the Maluti 517 million contract in early 2019 to the SCLC Polihali Diversion JV of Salini Impregilo and CMC di Ravenna of Italy with LSP Construction of Lesotho and CMI Infrastructure of South Africa. The twin 1km long tunnels, one of 7m in diameter and the other of 9m diameter, will divert the river flow around the dam construction site and provide capacity to carry flood waters as well as the flexibility to work in one tunnel while the river flows in the other.
Also currently in procurement is award of the geotechnical investigation drilling programmes for the proposed lake tap connection of the transfer tunnel into the existing Katse reservoir and for along the alignment of the Polihali transfer tunnel. Four groups of companies all from South Africa have submitted bids for the contracts.
References
- Lesotho Polihali diversion works awarded – TunnelTalk, April 2019
- Lesotho appoints experts and calls for prequalifications – TunnelTalk, January 2019
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