SGR Construction in Tanzania - UPDATES

MAY ALLAH BLESS YOU FOR BEING A JUST PATRIOTIC. AAMIYN
 
SAFI SANA!!!
 
Hili swala linatakiwa kuelezwa kwa undani zaidi ili wakenya wajue:-

View attachment 690135
Dar hamkupiga mahesabu vizuri, sijui mlikua mnafikiria kushindana na Kenya mkiamua design ya reli ...
35tonne axel load with annual freight carrying capacity of between 17million tonnes a year to maximum of 19 million tonnes.

Kenya with a 25tonne axle can carry between 22million a year to a maximum of 35million tonne a year
 

You haven't watched the video and understood the rationale.

The head of rahco clearly explained that they did that so that they use shorter cargo wagons and make less trips. This will reduce the o&m cost for both rail and wagons.

This was wise decision so long as the opportunity cost is reasonable. Am sure planners did some economic analysis before settling on 35t/axle
 
It makes sense on one hand, but the trade off in that scenario is it will be difficult to increase the frequency or add more freight trains in future when the port handles more cargo, without shortening the lifespan of the rail...You'll have to maintain the same amount of cargo traffic on the rail over the years.
 
Try to listen yourself before you comment anything.
You just trying to show us Kenyan SGR is the best. But in real sense wachina wamewaingiza Chaka.
Maintenance cost ya SGR ya TZ is very cheap. And also operation cost ni ndogo. If you listen carefully video ya kipindi maalumu you will understand that Tanzania want to localize her economy.
 
Oh, I can hear myself just fine..... I can explain to you Kenya's SGR, There are also feasibility studies with almost all the details on phase 1 and 2 out in the public, Tz SGR all I have seen up to now ni matangazo ya mdomo...

Unaniambia Maintenance cost ya SGR a Tz ni ndogo,..... Compaired to what? And what about profitability? (You can have low maintenance low turnover/profitaility, you can have high maintenance high profitability, you can have low maintenance high proitability....in short,knowing the maintenance cost does not explain the rest of the details - you need to find the right kind of balance between expense and profits) , Hizi design za reli si mambo ya kuangalia detail moja alafu una conclude kwamba reli yako ni better than the rest. Ni lazima upige hesabu ya other factors alafu ndo ufaanye conclusion...

Hata reli ya Kenya hio 25t/axle ni minimum, kumaanisha ukitaka unaweza siku zengine ukabeba vifaru vizito hata kubeba 80t per axle na utumie 3 locomotive heads kuvuta mabehewa na reli itasonga bila shida na reli haitoharibika.... lakini shida itatokea pale utakapo beba hio 80t kila siku, mwishowa mwaka utajikuta unahitaji repaires za reli n pia matairi ya reli....
Suluhisho hua kabla ujenge reli, unapiga hesabu ya mahitaji yako kulngana na mizigo unayopanga kubeba, speed utakayotumia na frequency ya kubeba mizigo, ili kjua ile perfect mix ambayo haitaharibu reli na kukuhudumia mahitaj yako hesabu hizo zitatumia hio minimum axle..

Ndio maana hata kama axle ya Tz ni 35t, mwisho wa mwaka, rei hii hifai kubeba zaidi ya 17-19million tonnes.. Hata kama mtangojea mizigo yote ya miezi sita na mbebe yote kwa mpigo 5mllio tonnes kwasababu mko na axle kubwa, bora mwisho wa mwaka msipitishe hizo tani 19m...
Ndio maana hapo kwa ile screenshort uliileta, umeandikiwa carrying capacity kama 17 Million..hata kama axle ni 35t





Hii hapa formula ya ku calculate cost of track wear:

k1 * sum(Qtot ^ 3) / nz + k2 * sum(sqrt(Qtot ^ 2 + Yqst ^ 2)^3) / nz + k34 * sum(f(FvV)) / mz

with
k1: cost coefficient for track wear
k2: cost coefficient for component wear
k34: cost coefficient for rolling contact wear
Qtot: vertical axle load
Yqst: static lateral force
nz: number of axles per wagon
f(FvV) energy dissipation function for rolling contact
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Hapo kuna speed,Axle load, wheel axle, power........ hizo zote zinahusiana, kwahivyo kuwa na higher speed+higher axle does not autmatically mean higher carrying capacity at the end of the year, neither does having slower speed + smaller axle weight....Its a matter of having the right perfect combination to achieve optimal Objectives... That is what we dont know and we need to know, but we can only really know who had the rght combination a few years after the two rails start operating
 
Another way to look at it.

Dar port handled about 16 million tonnes 2017. Considering that Dar is the biggest city, contributing a huge chunk of GDP to Tanzania, its safe o say a significant chunk of the cargo coming into dar from outside will be destined for dar.

16miilion tonnes a year, per day will be

(16,000,000/12)/30 = 44,444 tonnes per day


Lets assume for a second that all this 44 thousand tonnes a day arrives close to one another at a certain point in time and will all be going interland to one location , If each train has a capacity of 10,000 tonnes (or about 540 TEUs if you use a standard 18.5t for 1 TEU), That would mean

44,444/10,000 = you would need only 4 full trains and a fifth train carrying 444 tonnes,


or if you consider a load factor where if 70% of then train is full the train can leave
44,444/7,000 = 6.349 trains to evacuate all the cargo


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That was the assumption, now lets have a reality check

If i'm bieng modest, about 30% of all the cargo comming into dar-port from outside is destined for within daresalaam, so this wont require use f the SGR. that leaves us with 70% of 44,444 tonnes = 31,110 tonnes.

We dont expect the SGR to carry all the cargo, so again, if am bieng optimistic , the best case scenario, about 20% of this 31,110tonnes will still use trucks to ferry leaving 80% cargo for the rail, i.e 0.8 x 31,110 = 24,888 tonnes a day

That translates to 3 trains a day or 4 trains a day if you consider a load fator of 70% full...

Now given that ships at a port of call dont all arrive at once but continuously through the day, and given the fact that a port like dar has multiple births at different locations withing the port area, and given the fact that one ship could be carrying goods destined for different parts of dar and beyond dar, Imajin the logistics required for 1 10,000 train to fill up by picking cargo at different births within the port .....
Remember, a single day is 24 hours, and the dar port is opened 24 hours, this translates to on average 24,888t/24hrs =1037 tonnes bieng loaded on the train every our............ So in essence, to load 7,000t on a single train, the train will criss cross the port for 7000t/1037t-hr = 7 hours. And if you want the train to be full 100% it will take 10,000t/1037t-hrs = 10 hours to fill one train... Goods arriving at 7am will wait till 4pm

We also have to consider that all these goods are not destined for one, place, some will be offloaded in moro, Mwanza, ICDs some will be destined for Uganda, some Arusha...etc,


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If Tz had the equivalent of people like David ndii and the equivalent of Media houses like Standard group,the star, NMG..... They would have done this kind of analysis and posted it in one of the dailies for public consumtion, but since you dont have (all you have is what the CCM government is telling you), I will leave it there for tonight
 
and how about hinterland cargo destination overseas? Do u know there r massive copper, coal, nickel n steel projects current under different stages of development?
 
and how about hinterland cargo destination overseas? Do u know there r massive copper, coal, nickel n steel projects current under different stages of development?
Future tense -
You guys are always defending yourself with the future.
Anyway up to now I haven't head of the SGR official taking about directly building branch lines to the exact location where these minerals are.

And if indeed these deposits are massive, what makes you think that these mining companies wont build their own branchlines to connect with the SGR, buy their own wagons and locomotives then pay TRL a small service charge for using their rail, in order for these mining companies to maximize profit by running efficiently
 
Duh! Haya mawazo ni ya wakenya tu.
Minerals zipo
Kahama, Shinyanga, Geita, Mwanza, Singida, Tabora even kigoma.
Reli inapita huko ndugu.
Yaani wewe jamaa!!!
 
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