Overland conveyor for oil shale transportation of Ojamaa mine, Estonia

1.General Information of the Tender

Buyer:

VKG Kaevandused OÜ

Commercial Registry Code: 10854884

VAT nr: EE100759112

Address: Järveküla tee 14, 30 328 Kohtla-Järve, Estonia

Contact: phone +372 334 2776, fax +372 337 5044, e-mail vkgkaevandused@vkg.ee

Additional information: Tauno Tammeoja, phone +372 334 2785, e-mail tauno.tammeoja@vkg.ee

Subject of the Tender: Overland conveyor for oil shale transportation of Ojamaa mine, Estonia.

Short Description:

Overland conveyor with length of 12.86 km (AutoCAD file attached) and capacity of 700 tph is planned to transport oil shale from mine to the oil factory. Scope of tender is design and delivery of conveyor system including all structural steel supports (bridge sections and conveyor modules) and erection supervision of the conveyor. VKG Kaevandused will be responsible only for erection works under supervision of Bidder, reinforced concrete foundations and earthworks.

All quotation compilation expenses until signing contract are on Bidder’s expense. VKG Kaevandused remains the right to reject all quotations.

Deadline of the Project: The conveyor must be fully operational by 31 December 2011

Site Visiting: on request.

Quotation Languages: English, Russian or Estonian.

Quotation Currency: Euros (EUR).

Delivery condition: DDU (job site) Incoterms 2000.

Price Validity: price must be valid until 15.05.2010.

Submitting Quotation:

Quotations must be submitted on paper and electronically.

Address: Järveküla tee 14, 30 328 Kohtla-Järve, Estonia, e-mail vkgkaevandused@vkg.ee.

Submitting Deadline: 15.01.2010.

In case of Your interest to participate in the Tender and submit quotation please send Your confirmation via e-mail vkgkaevandused@vkg.ee during 7 days from receiving the enquiry.

Evaluation Will Be Made Based on Following Data:

1.Technical Data:

-Technical data list, including, but not limited to:

•belt width

•belt trough

•belt speed

•belt properties

•idler configuration

•drive power calculation

•drive configuration;

•other electrical equipment;

•control system.

-Lay-out drawings for total system including principal profile drawing of the system, longitudinal profile;

-Input data for designing of foundations (weights, vibration, installation drawings ect.);

-Calculation of curve radius;

2.Commercial Data

-Price; must be split into components:

•belt

•frame

•support and steel structures for bridges and crossings

•coatings

•idlers

•cables along conveyor line

•control system

•other parts not listed here

•project compilation

•construction supervision

-Operating and maintenance costs;

•lifetime and costs for main wearing parts (belt, idlers, drive),

•planned maintenance schedule during and after warranty period;

•planned man-hours for maintenance;

•power consumption

-List of sub-contractors (optional);

-Warranty;

-Export guarantee;

-Bank guarantee (10% for warranty period);

-Pricing conditions and terms of payment;

3.Time schedule;

4.Reference list of long distance conveyer systems (length, type (short description), location, year of the installation).

2.Technical Information of the Tender

Transported material

1.Material: oil shale;

2.Size of oil shale 0…125 mm;

3.Moisture content up to 13 %;

4.Bulk density of oil shale – average 1,1 t/m3;

5.Oil shale hardness is 2-2,4; limestone (size 0...25 mm, small amounts) up to 3,3 by Mohs' scale.

Power supply

Typical available voltages 6,0 kV and 400/230 V; 50 Hz.

Conveyor capacity

1.Maximum capacity – 3,05 Mt oil shale annually; 700 t/h;

2.Capacity adjustment in range of 30 % (frequency inverter);

3.Operating schedule: 250 days annually, 21 hrs per day.

Special attention:

1.Conveyer should be designed as one single curved conveyor.

2.Measures of starting up fully loaded conveyor in case of emergency and also in conditions of freezing temperatures (down to -35 deg Celsius; fine oil shale tend to freeze);

3.Measures against dust flow and idler blockage caused by dust. Prevention of oil shale dust ignition and ignition caused by idler blockage;

4.Minimized noise level;

5.Belt system must be covered against the weather conditions (rain, snow, wind);

6.Measures against vandalism, as conveyor passes human settlements and easily accessible areas.

7.All equipment must satisfy all safety and other legal requirements.

Scope of Supply and Battery Limits:

1.Conveyor System starting with loading point (excluding hopper/feeder) and ending with discharging point (excluding hopper);

2.Design of technology (including the solution for crossings);

3.Design of electrification;

4.Design, delivery and installation of control system;

5.Delivery of the equipment; also all structural steel supports, including all bridge sections and conveyor modules, should be provided by Supplier. VKG will be responsible only for erection works under supervision of Bidder, reinforced concrete foundations and earthworks;

6.Supervision for erection;

7.Commissioning;

8.Start-up;

9.Technical documentation; manuals for operation, maintenance, repair, spare parts;

10.Staff training;

11.Warranties.

Responsibility of VKG Kaevandused (excluded from the scope of the contractor):

1.Permit to build and operate the works; All necessary building permissions

2.Earthworks;

3.Reinforced concrete foundations ;

4.Power supply in both ends of conveyor;

5.Installation of the conveyer system (mechanical erection) under supervision of the contractor;

6.Installation of electrification under supervision of the contractor.

Description of Crossings

There are 18 crossings. The list of crossings and the short description please find below and also in AutoCAD file attached. For crossing power lines up to 35 kV the option of setting additional poles or relocating power lines under ground can be considered.

List of crossings. :

1.Crossing 1: Big trench in Aidu open pit territory. There are steep slopes on both sides of the water filled trench. In both sides of the water are steep slopes.

2.Crossing 2: Gravel road in Aidu open pit territory. This heavily used large road is situated in the open pit valley. This road is mainly used by heavy mine trucks. Height of conveyor from current road level must be 7,5 m.

3.Crossing 3: Two power lines with the voltage 110kV. The only realistic way to cross the power lines is to pass under them. The minimum distance between the ground and the power line is ca 6 m, the maximum >20m.

4.Crossing 4: Power line with the voltage 35kV and small road in Kohtla-Nmme industrial park. The height of the pole is ca 17-18 m. The minimum distance between ground and power line is ca 6m. Some possibilities for crossing that power line and road:

a.Put the overhead line under the ground or set new pole for power line if it will be acceptable by the owners of the power line (technically possible) and install the conveyer over the road. The necessary free height should be at least 5.0 m.

b.Construct the new road over the conveyer system (if it is possible to install the conveyer system on the ground).

c.Close the road and relocate it parallel to the railroad described in crossing 5.

5.Crossing 5. road+railroad+ powerline+powerline+road+telegraph cable in village Kohtla-Nmme. Railroad+ roads in both side of railroad. Roads are mainly used by local people. There are also power lines between one road and railroad with the voltages 6-10 kV and 35 kV and with the height of pole 7 m. Necessary free height for road should be 5.0 m, for railroad 6,25 m from the railroad rail and for power line 3 m from the top of the pole.

6.Crossing 6: Power line with the voltage 35kV and with the height of pole ca 18 m + small road in Kohtla-Nmme village. The minimum distance between ground and power line is ca 6 m. If crossing over the power line, then the necessary free height from the pole should be 3m and from the road ca 5m. It should be also technically possible to put the cable under the ground if it will be acceptable by the owners of the power line.

7.Crossing 7: River Kohtla, very small trench

8.Crossing 8: conveyer in power line passage. Crossing- small village road. There are two possibilities for crossing:

a.Over the road. For roads necessary free height should be at least 5.0 m.

b.Under the road. To construct the new road over the conveyer system.

9.Crossing 9: Small trench and railroad between village Kohtla-Nmme and VKG production site. Railroad is used by freight trains. There are two possibilities for crossing:

a.Over the railroad. Necessary free height from railroad rail should be 6.25 m.

b.Under the railroad if it is technically possible and feasible.

10.Crossing 10: Three high-voltage power lines (330 kV, 330kV, 110kV). The only realistic crossing could be under the power lines.

11.Crossing 11: small ditch.

12.Crossing 12: railroad at VKG production site.

13.Crossing 13: trench at VKG site.

14.Crossing 14: road at VKG site

15.Crossing 15: railroad at VKG site

16.Crossing 16: road at VKG site

17.Crossing 17: railroads at VKG site

18.Crossing 18: road at VKG site

Additional information:

Tauno Tammeoja, phone +372 334 2785, e-mail tauno.tammeoja@vkg.ee ■