page 1
page 2
page 3
page 4
page 5
page 6
page 7
page 8
page 9
page 10
page 11
page 12
page 13
page 14
page 15
page 16
page 17
page 18
page 19
page 20
page 21
page 22
page 23
page 24
page 25
page 26
page 27
page 28
page 29
page 30
page 31
page 32
page 33
page 34
page 35
page 36
page 37
page 38
page 39
page 40
page 41
page 42
page 43
page 44
page 45
page 46
page 47
page 48
page 49
page 50
page 51
page 52
page 53
page 54
page 55
page 56
page 57
page 58
page 59
page 60
page 61
page 62
page 63
page 64
page 65
page 66
page 67
page 68
page 69
page 70
page 71
page 72
page 73
page 74
page 75
page 76
page 77
page 78
page 79
page 80
page 81
page 82
page 83
page 84
page 85
page 86
page 87
page 88
page 89
page 90
page 91
page 92
page 93
page 94
page 95
page 96
page 97
page 98
page 99
page 100
page 101
page 102
page 103
page 104
page 105
page 106
page 107
page 108
page 109
page 110
page 111
page 112
page 113
page 114
page 115
page 116
page 117
page 118
page 119
page 120
page 121
page 122
page 123
page 124
page 125
page 126
page 127
page 128
page 129
page 130

126 www. bus- ex. com March 10

Eskom: Medupi to flue gas desulphurisation ( FGD) as a retrofit immediately on completion of the present construction programme. Preparation for the construction project has involved considerable investment in the road infrastructure. Internationally sourced plant and equipment, sourced from global technology suppliers such as Alstom and Hitachi, will be shipped to South Africa, offloaded at the port of Richard's Bay over 700 kilometres away and then transported by road through the provinces of KwaZulu Natal, Mpumalanga and Limpopo. A number of the largest loads will be routed through Swaziland as well, in order to bypass areas of road reconstruction in South Africa. Locally manufactured and sourced plant and equipment will be brought in by these roads as well. " The roads through these provinces were reviewed some time ago by my team," Crookes says. " The roads through KwaZulu Natal and Mpumalanga are in the process of being upgraded to withstand the heavy haulage; however, as you get closer to our site the road options diminish to just two or three roads and they all need upgrading." When the construction programme reaches its height, Crookes estimates there will be in excess of 200 standard sized trucks arriving at the site each day, while some of the heavy equipment will require large transporters that will occupy the entire width of the road. The size and scale of this logistics operation is likely to present the Limpopo road agencies with a considerable challenge: how to upgrade the roads without halting access to the site. Crookes and his team are currently working with the agencies to find solutions. Several things are being done differently on this project in a bid to prevent costly delays. Rather than rely on contractors to provide housing for the construction workers, Eskom has invested three quarters of a billion rand in building a T hree years ago, construction commenced on a new coal- fired power station in South Africa's Limpopo Province, near the town of Lephalale, close to the border with Botswana. Named Medupi- which means ' rain that soaks parched lands, giving economic relief'- the plant will consist of six 800 megawatt units which will come online progressively, with a completion date of 2015. The position of the new plant has been carefully chosen- just a few kilometres from the Exxaro coal mine and close to the Matimba power station, it will be assured of a ready supply of fuel from the extensive but largely unexploited Waterberg coal fields. Medupi has the distinction of being the first new coal-fired power station to be built by the state- owned South African power generation company, Eskom, for some 20 years. And it is also the first in a programme of power plant construction aimed at increasing the company's generation capacity by over 16,000 megawatts, ensuring it will be able to satisfy the nation's increasingly voracious appetite for electricity. Costing some R125.5 billion, Medupi will incorporate the very latest technologies. Its supercritical boilers will operate at higher temperatures and pressures than traditional boilers. " This will give us significantly higher efficiencies," explains project manager Roman Crookes. " And by burning less coal per megawatt, we will also be emitting less CO2 and other gases into the atmosphere." The station will utilise direct dry cooling technology which releases virtually no cooling water into the atmosphere. This is of particular importance at Medupi because, as its name suggests, it is located in a water scarce region of the country. Eskom has also committed March 10 www. bus- ex. com 127