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Power Supply
Power supply for both stage one and stage two operations phases will be supplied by
medium speed 750/1000 RPM diesel generating sets capable of operating on heavy fuel oil
(HFO) at a viscosity up to 700 centistokes, and generating at 11,000volts at 50HZ. A
35MW power station located at the plant site will consist of 7 x 4MW and 1 x 7MW
engine/alternator sets with associated air coolers, fuel cleaning equipment, switchgear etc.
The power station will be designed to supply nominal output at site based climatic
conditions with minimal derating.
Stage one (oxide and mixed ores) will cater for a load capacity of circa 16,000/17,000kW,
stage two (mixed ores) will cater for a load of circa 22,000kW, while stage three (sulphide
ore) will be only slightly lower than stage two.
The operating mode will be N+1 sets, (where N equals the number of sets required to meet
the load with one additional machine on standby/ repair) operating at an 85% load factor. A
smaller capacity set running on diesel fuel and generating at 400 volts will serve as a black
start facility, as well as emergency power.
The power station main building will consist of:-
• an engine hall containing the generating sets
• auxiliaries annexe containing fuel treatment and engine auxiliary equipment
• switchgear annexe containing generator and main distribution switchgear
• transformer compound containing station earthing, auxiliary and 11kv/33kv step up
transformers.
Fuel (HFO) will be stored in a tank farm adjacent to the power station and incorporate tank
heating for the HFO storage tank(s). The power station auxiliary facilities will include air
start compressors, HFO fuel cleaning and conditioning with facility for sludge removal,
lubrication equipment and prime mover cooling equipment including water treatment.
The power station will operate in a semi automatic mode i.e. normally unattended except
for major load change and machine maintenance selection.
--------------------------------------->>>>
The above is taken from Sukari's Technical Report 43-101F1 Dated March 14, 2012
So it appears Sukari uses heavy diesel oil , which the Ministry of Petroleum says went up 20%
Incidentally using HFO is polluting to the extreme - thus moving to grid power would not only be cheaper but far less destructive to the environment. Sukari's fleet of haul trucks would obviously use regular diesel , which as you say , remains priced the same
What % of AISC is the diesel element of the dual bill now that we have solar?
this is the key question
Replace dual with FUEL!
Steve I read somewhere ,probably in a report the Solar was going to save in Diesel costs ,dont remember exactly but it was well in excess of 10 million.
Of course just an estimate As really still in early days.
Thanks Mr Bond :-)
13th Oct 2022 14:00
(Alliance News) - Centamin PLC on Thursday said developments at its Sukari project have created further opportunities for cost reduction, as the mine's solar plant delivers savings ahead of expectations.
Centamin is a London-based gold producer with interests in Egypt, Burkina Faso and Ivory Coast. The Sukari gold mine is its flagship project, and Egypt's first large-scale modern mine, with a workforce of around 3,795 people.
In its update on Thursday, Centamin said full commissioning of the solar plant could lead to annual cost savings of USD20.0 million, based on current diesel prices.
The company found that the plant reduced its exposure to volatile fuel pricing, saving up to 70,000 litres of diesel per day, and an average of 22.0 million litres per year.
Looking ahead, Centamin expects the plant to reduce its scope 1 greenhouse gas emissions by 60,000 tonnes of carbon dioxide equivalent per annum.
The company also said it had received initial proposals from the Egyptian government and independent power providers to supply 30 to 50 megawatt alternating current units of grid power to Sukari.
Grid power supply at the higher end of the spectrum would make it possible to stop using diesel power completely at the mine, which is located near the Red Sea coast below Luxor with the Egyptian grid in close proximity.
The Egyptian power grid is generated from natural gas and a mix of renewables, and could if used further reduced Sukari's greenhouse gas emissions. Egyptian industrial grid tariffs also are significantly cheaper than the cost of power generation using diesel fuel.
Centamin expects full commissioning of the Sukari solar panel by the fourth quarter of 2022.
"The solar plant and potential to integrate grid power will contribute materially to our environmental stewardship philosophy and our strategic objective of maximising returns for all stakeholders," said chief executive officer Martin Horgan.
Centamin shares were trading 0.8% higher at 84.26 pence each in London on Thursday afternoon.
By Holly Beveridge; hollybeveridge@alliancenews.com