![Page 1: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/1.jpg)
Replacement of wheel loaders in Replacement of wheel loaders in Open-pit operations mining
![Page 2: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/2.jpg)
Agenda
1. Introduction2. Developed methodology3. Results3. Results4. Conclusions & limitations
1/30
![Page 3: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/3.jpg)
Agenda
1. Introduction2. Developed methodology3. Results3. Results4. Conclusions & limitations
1/30
![Page 4: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/4.jpg)
1. IntroductionIn this study, we address the issues ofReplacement of wheel loaders with32.000 operating hours
2/30
![Page 5: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/5.jpg)
1. IntroductionIn this study, the wheel loaders is leasingand along with payment of the last fee, wemust decide between the following5 alternatives:5 alternatives:
3/30
![Page 6: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/6.jpg)
1. IntroductionAlternatives evaluated in this estudy:
a) Purchase a new of same manufacturerb) Renewal of leasing with manufacturerc) Rent to local companyd) Purchase of old equipmente) Leasing with equivalent competitiveequipment
4/30
![Page 7: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/7.jpg)
1. IntroductionSome points to consider for this evaluationare the following:
• The replacemente of assets should• The replacemente of assets shouldevaluate to 6 years, because is theremaining time life of mine
5/30
![Page 8: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/8.jpg)
1. Introduction• We have reliable information
maintenance costs and useful livesmajor and minor components
• The wheel loaders is miningproduction equipment
6/30
![Page 9: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/9.jpg)
1. Introduction• Every years we make a 10 yearsprojection of costs and availability
• Outsourcing maintenance (dealer)
7/30
![Page 10: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/10.jpg)
Agenda
1. Introduction2. Developed methodology3. Results3. Results4. Conclusions & limitations
8/30
![Page 11: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/11.jpg)
2. MethodologyIt uses the methodology of calculation ofequivalent annual costs (EAC) porcomparing 5 replacement alternative instudystudyGiven the definition of the introduction,year 6 is of interest for this study
9/30
![Page 12: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/12.jpg)
2. Equivalent Annual Costs
• I : Value of the initial investment oracquisition cost in year zero
• Tn : sale or trading value of the assetin year n of life
nin year n of life
• Cj : Operation & Maintenance (O&M) cost in year j of life
10/30
![Page 13: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/13.jpg)
2. Equivalent Annual Costs
• Cinef. : Downtime costs in year i of life
• n : Year of life for equipmentreplacementreplacement
• r : Agreed discount rate
11/30
![Page 14: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/14.jpg)
2. Methodology
How the methodology of Equivalente Annual Cost (EAC)
is mathematically expresed?
12/30
is mathematically expresed?
![Page 15: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/15.jpg)
2. MethodologyWe must minimise the following function:
13/30
![Page 16: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/16.jpg)
O&M costs+ Downtime costs
Evolution of costs
0 6.000 12.000 18.000 24.000 30.000 36.000 42.000 48.000 54.000 60.000
Equipment hours (hours)
![Page 17: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/17.jpg)
Agenda
1. Introduction2. Developed methodology3. Results3. Results4. Conclusions & limitations
15/30
![Page 18: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/18.jpg)
3. Results
In a 2-dimensional graph,consideringX-axis: Hour meter of the equipmentX-axis: Hour meter of the equipment(hours)
Y-axis: Dollars (U.S. $)16/30
![Page 19: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/19.jpg)
Equivalent Annual Cost (EAC)
32.000 38.000 44.000 50.000 56.000 62.000 68.000 74.000
Equipment hours (hrs)
![Page 20: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/20.jpg)
3. ResultsThe alternatives that were dismiss as beingthe higher EAC are:
c) Rent to local companyc) Rent to local companye) Leasing with equivalent competitivesequipment
17/30
![Page 21: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/21.jpg)
Equivalent Annual Cost (EAC)
32.000 38.000 44.000 50.000 56.000 62.000 68.000 74.000
Equipment hours (hrs)
![Page 22: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/22.jpg)
3. Results
They make a sensitivity analysis onel Downtime costs to see how EAC varies
19/30
![Page 23: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/23.jpg)
Equivalent Annual Cost (EAC)
32.000 38.000 44.000 50.000 56.000 62.000 68.000 74.000
Equipment hours (hrs)
![Page 24: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/24.jpg)
Equivalent Annual Cost (EAC)
32.000 38.000 44.000 50.000 56.000 62.000 68.000 74.000
Equipment hours (hrs)
![Page 25: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/25.jpg)
3. Results
In the case of Downtime costs < 1.500 [U.S. $ / hrs]d) Purchase of old equipment
If Downtime costs > 1.500 [U.S. $ / hrs]a) Purchase a newb) Renewal of leasing
20/30
![Page 26: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/26.jpg)
Agenda
1. Introductions2. Developed methodology3. Results3. Results4. Conclusions & limitations
22/30
![Page 27: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/27.jpg)
4. Conclusions
Alternatives a) and b) are the leasts EACCAE assessment for 6 years andDowntime costs of 3.000 [ U.S. $ / hrs ]
EAC a) y b) (6 years;3.000) = 3,42 MUS$
23/30
![Page 28: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/28.jpg)
4. Conclusions
The results vary significantly depending oncomponent major costs and lifetime
• Engine, Transmissions, Converter• Engine, Transmissions, Converter• Final drives, differential, cylinders, PTO
24/30
![Page 29: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/29.jpg)
4. Limitations• Requires an estimate of the O&M
costs, which can be inaccurate in case that new equipment that have notconsolidated their designsconsolidated their designs
• The restriction to evaluate the projectin 6 years, seriously limits the result
26/30
![Page 30: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/30.jpg)
4. Comentaries• The asset sale value will depend on
aspects such as:
- The conditions of the rental and sales market- The conditions of the rental and sales market- On the world economy and local activity level- Geographical location
27/30
![Page 31: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/31.jpg)
4. Commentaries• In all simulations performed the
alternative c) rent to local company; proves to be the most expensiveoptionoption
28/30
![Page 32: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/32.jpg)
Ending………
29/30
![Page 33: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/33.jpg)
![Page 34: Replacement of wheel loaders in Open-Pit operations mining](https://reader033.vdocument.in/reader033/viewer/2022051816/54662161b4af9f583f8b523a/html5/thumbnails/34.jpg)