Cost comparison SGR Kenya vs SGR Tanzania

Hao SUMA JKT wapatieni kwanza hivi vitoy wavimalizie, kuna mtoto flani hapa msumbufu nataka nimnunulie kamoja ka hako! 🤣 🤣 🤣 🤣 🤣 🤣
 
Kosugi said:
North America mpk sasa jointed rail wanayo.
Click to expand...
angalia wakiondoa outdated jointed rails! 👇👇

Rail Trains​


May 12, 2020


Today’s railways use continuous welded rail (CWR) a lot instead of the traditional jointed rail. CWR or “ribbon rail” is a very, very long rail, often a quarter mile in length. CWR is preferred because it is strong and has no joints to sag or fail. Most wheel and track wear occurs at the rail joints, so with super long rails, there are very few joints. The traditional “clickety clack” of wheels over jointed rail is gone with CWR.

Most main lines in North America (and Europe) have a lot of CWR in them and in order to carry these super long rails, specialized rail trains have been developed. These rail trains have a number of cars with racks on them to hold the rails, with bulkheads at each end to prevent the rails from sliding out, and equipment to load or unload the rails.

Ribbon rail beside the tracks

CWR is often made by taking traditional 39′ rails and welding them end to end to form the quarter mile lengths. This is done at a factory and the rails are then transported to where they will be installed by rail trains, and dropped beside the tracks for later installation. Track gangs come in to swap rails out, and the used rails are then picked up by work trains (often rail trains).

May 9, 2020​

Used rail train at mile 19, CN Rivers subdivision

I recently spotted this rail train stopped on the north track of the CN Rivers subdivision, just west of the mile 19 marker. I’m told this was a used rail train, picking up old CWR that was left on the side of the track. There were crew on the train itself, probably securing the load before the train could head out.

I thought about flying my drone to record the train, but I decided that it wasn’t a good idea because A) it was windy, and B) I didn’t want to bother the people working on the train. A drone buzzing around would be a distraction and I didn’t want to distract the workers more than my quick picture taking was doing already.

CN 45117 on the end of the rail train

The end of the last car, CN 45117, had a big steel bulkhead to prevent any of those rails sticking out from sliding past the end of the car. I don’t know how the rails are secured in the train – if at all – but it would not do to have a quarter mile rail go sliding out of the end.

That train made me think of other rail trains I’ve seen…

August 21, 2002​

Overhead view of empty rail train, CP Winnipeg yard

I was up on the Arlington Street bridge in Winnipeg in August 2002, during a family visit, and captured a few views of an empty rail train in the CP yard.

Empty rail train, Winnipeg

​

February 21, 2010​

Parked rail train in Winnipeg yard

In February 2010 I was up on the Arlington Street bridge again in Winnipeg, taking some photos of the yard. I took a few photos of a parked rail train. Note how the rail superstructure is built on old hoppers.

Note the line of parked locomotives behind the rail train. There were about fifty locomotives there, mostly 9100 series SD90s that were later moved to behind the Weston shop buildings.

Keep those rails rolling

​

17, 2012​

CN 6014 West – a rail train

On April 17, 2012 I caught CN 6014 leading a rail train west out of Winnipeg. I gave chase, because it was a rail train, and because it had two cabeese on the end!

Rail train with two cabooses

Rail caboose, er, “crew transporter” BCOL 1873 and Operation Lifesaver caboose CN 77014 were bringing up the rear.
You can read more in a previous blog post about this train.

​

January 15, 2013​

Rail train, January 15

On what looks like a brisk January afternoon, I photographed a west facing rail train just west of mile 10 of the Rivers subdivision. You can see an orange-clad worker atop the train in the photo above, so clearly they were stopped. Note the two empty bulkhead flats separating the rails from the locomotive.



I did my best to photograph some of the machinery at the other end. There’s a rail threaded through it. There must be some kind of motor there – note the muffler on top of the orange box – that drives some rollers to propel the rail through the mechanism as the train slowly pulls forward.

Closeup of rail train mechanism

Zoom out for a view of the rails being discharged from the train. There’s one on each side of the train.

Rails being discharged

​

April 4, 2015​

Rail train passing the Rosser grain elevator

I came across a CP rail train heading west past the Viterra grain elevator near Rosser, Manitoba on a lovely April afternoon. CP 3085 was pulling the train solo. It seems like most rail trains only have one locomotive on them.

Canadian Pacific rail train

This train had rails on old gondolas – different than CN’s flatcars!

CP 420869 and the end of the rail train

“DANGER – KEEP AREA CLEAR WHILE RAIL IS IN MOTION”

​

September 20, 2015​

CN 5429 heading up a train with rails…

was out with Tom Sajnovic on the morning of September 20, 2015, doing a little railfanning. We noticed that a train was getting ready to leave Winnipeg on the Sprague subdivision. This train had a load of rails on the head end, along with some general freight.

The photo above shows them leaving Symington Yard. This location is called “Navin” and is beside the Tinkertown amusement park.

We ended up chasing it to Ste. Anne and photographing it again there. There are more photos in my blog post.

​


Rail Trains – Traingeek – Trains and Photography

www.traingeek.ca
 
Kosugi said:
North America mpk sasa jointed rail wanayo.
Click to expand...
angalia wakiondoa outdated jointed rails! 👇👇

​

​

March 13, 2016​

Parked CP rail train in Molson

I was out railfanning east of Winnipeg on March 13, 2016. I saw some action on CN’s Redditt sub, but although I spent some time at Molson on the CP main line, nothing came along. This rail train was parked in a siding there, though, so it wasn’t a total loss going there!

December 22, 2016​

Herzog heading up a rail train

few days before Christmas 2016, I was out near Dugald when I spotted this unusual rail train slowly moving along the CN main line. It featured a Herzog truck on the head end, and a CN locomotive on the tail end.

A lot of equipment!

The truck with its trailer appeared to have all the equipment needed to load or unload rail. There certainly were a lot of electrical and hydraulic cables festooning the rig.

of the rail cars were CN 45033, CN 45077, CN 45086, CN 45016, CN 45012, CN 45061, CN 45084, and CN 45085. Note the stairs on the car below – you have to be able to get up to the catwalk somehow!

Stairs here

I’m not sure if the Herzog truck was doing any pulling at all. I assume the CN locomotive at the tail end was pushing. There was a crew in the locomotive – at least an engineer.

CN 8890 bringing up the rear

​

28, 2018​

Lots of gear

Late April, 2018, I was traveling down Panet Road, and as I approached the CN crossing (the Redditt subdivision) I saw a westbound rail train going through. I missed the head end but I pulled off to capture the rest of it. The photo above shows some of the machinery going through, including CN 44309 labeled as “Kershaw RPU 103” complete with cranes, and CN 44310 with some kind of machine with rollers.

I’ll draw your attention to the sign in the background…



No relation

The other end was very exciting, with another caboose!

CN 47113 and a caboose!

For those keeping score, some of the rail cars on this train were CN 47149, CN 47116, CN 47150, CN 47152, CN 47107, CN 47113, and CN 47057. The caboose was Operation Lifesaver CN 77014, the same one you saw earlier in this post.

Operation Lifesaver caboose CN 77014

​

March 17, 2019​

Rail Train on the Letellier sub

In the past few years, CN has been replacing the jointed rail on the Letellier subdivision (that runs down to the US border at Emerson) with CWR. I caught a glimpse of a rail train just north of Bishop Grandin Boulevard in Winnipeg, near the former Manitoba Sugar plant. I wasn’t able to get a decent photo angle, and I was with my family so I didn’t have time to scout around for a better angle.

Just One More Thing​


Here are a few other rail train related posts and videos from around the Interwebs:


Rail Trains – Traingeek – Trains and Photography

www.traingeek.ca
 

SGR tenderfloat procedures well in place​


1. Oktober 2021
01Oct 2021
By Guardian Reporter
Dar es Salaam
News
The Guardian
Govt: SGR tenderfloat procedures well in place

THE government has said there is no controversy over the awarding of a contract for the construction of the third and fourth stretches of the Standard Gauge Railway (SGR) project to link Makutopora with Tabora and from Tabora to Mwanza and then to Isaka.


Works and Transport deputy minister Mwita Waitara.
Click to expand...

According to Works and Transport deputy minister Mwita Waitara, everything is going on well in relation to the tendering process.

He told The Guardian in an exclusive interview earlier this week that the ministry has so far not received any complaints from bidders.

The deputy minister would not be drawn into naming the bidders, only saying procedures require that they are made public when tender bids are opened and adding that winners would be picked through a competitive bidding process.

Concerns were raised early this week over why the Tanzania Railways Corporation (TRC) has rejected advice from the Public Procurement Regulatory Authority (PPRA) on the adoption of the single source procurement method “for tender No. PA/154/HQ/2021-22/W/01 (LOT 3&4)”.

In response, the deputy minister stated that the government is determined to ensure a fair tendering process, in which case the single procurement method could result in unfair bidding and thus mar the competition.
“We are aware that TRC is in favour of the single source procurement method. But this is not in the broad interest of Tanzanians, whose interests will be protected through Section 64(1) of the PPRA Act of 2011 and Regulation 149(1) enacted in 2013,” Waitara explained.

He also expressed awareness that Turkish firm Yapi Merkez and two Chinese companies – China Civil Engineering Construction Corporation and China Railway Construction Corporation – have expressed keen interest in the tender.

“The public naturally shares the reported position by the PPRA in calling for the use of competitive tendering in obtaining contractors of lots 3 and 4 of the railway,” he said, further noting that nothing has gone wrong with the tendering process in relation to the construction of the two sections of the SGR project.

The government has not received any formal complaints from bidding companies and procurement processes are being observed in accordance with the law, he emphasized, adding that TRC and PPRA are public entities and any concerns or reservations raised would be dealt with by the relevant organs in the public interest.

Contacted last Saturday for comment, PPRA Acting Director General Mary Swai said the issue should be left in the hands of the two entities and it should be discussed by observing confidentiality.

Since last week that there have been press and social media reports indicating that TRC and PPRA differ on the method of awarding the tender for the job.

It was reported that TRC was in favour of the single source procurement method, while PPRA wants the contractor to be obtained through competitive tendering as per Section 64 (1) of the Public Procurement Act 2011, read with Regulation 149 (1) of the Public Procurement Regulations 2013.

The two pieces of the law require that public entities observe competitive tendering in the procurement of goods and services for public-owned projects.

The construction of the strategic SGR railway consists of five phases covering 1,219 kilometres of the main track, with phase 1 stretching from Dar es Salaam to Morogoro (300km), phase two from Morogoro to Makutupora (422km), phase three from Makutopora to Tabora (294km), phase four covering Tabora to Isaka (130km) and phase five from Isaka to Mwanza (249km).

Upon completion, the SGR line will link Tanzania with Rwanda, Burundi, and the Democratic Republic of Congo, with the 7.2trn/- SGR project so far being executed by Yapi Merkez.

 
komora096 said:
Umekosa data za kukusaidia sio[emoji1787][emoji1787]
Narudia tena, niletee mahala panapo sema ya kwamba jointed ni outdated
Click to expand...
Wewe mbishi kweli nakupatia scientific paper kabisa usome ila na mashaka sana na uelewa wako.

Nimekuwekea pia kipande kidogo usome ili usiumize kichwa chako.

All modern railways are nowadays using continuous welded rail in which the Long rails are further welded together by utilizing flash butt welding/Aluminothermic welding process to form one continuous rail that may be several kilometres long. The first welded track was used in Germany in 1924 and the US in 1930 and has been adopted by other nations since the 1950s. RAILTECH INTERNATIONAL, a subsidiary of the DELACHAUX Group, has been a world leader in rail welding technologies for a century. Two major welding processes are currently developed and produced by RAILTECH. H The Alumino-thermic Welding Process (ATW) H The Flash Butt Welding Process (FBW) in stationary plants or mobile equipments. ALUMINO-THERMIC WELDING PROCESS The Alumino-thermic Process, which is an exothermic chemical reaction, is using aluminium as the reducing agent at high temperature. This process is used for the production of many high purity metals as chromium or manganese but the most prominent example is the production of high quality steel with the reaction between aluminum and iron oxides: Fe2O3 + 2 Al → 2 Fe + Al2O3 Because this alumino-thermic reaction produces both high heat energy and a large volume of filler metal, without the requirement for an outside power source, it is ideal for the site welding of heavy sections i.e. railway rails. Whatever the section being welded, the procedure is fundamentally the same. In most cases alumino-thermic welding is used as a butt weld to join heavy sections. A gap is prepared between the sections, refractory moulds are placed around the gap and the moulds are sealed by a suitable luting medium. A crucible holding the charge is prepared and the reaction is started by means of an ignition device. Once the reaction is complete in the crucible, an automatic thimble releases the

[PDF] STATE OF THE ART RAIL WELDING PROCESS FOR PRODUCTION OF LONG AND CONTINOUS WELDED RAILS AND ITS GROWING IMPORTANCE FOR EXPANDING INDIAN RAILWAYS - Free Download PDF

1 STATE OF THE ART RAIL WELDING PROCESS FOR PRODUCTION OF LONG AND CONTINOUS WELDED RAILS AND ITS GROWING IMPORTANCE FOR...
silo.tips
 
Bado hujaleta justification mpk sasa km joint welded railtrack haitumiki.
Naona unaleta maelezo ya CWR tu.
Mie nafunga mjadala pia nimekwambia North America sijasema United states of America.
 
Si nyinyi mmempea mchina tender ya kujenga electric esigiara?
Sgr ya Kenya imebeba mamillioni ya tani za mizigo na watu.
 
Kosugi said:
Bado hujaleta justification mpk sasa km joint welded railtrack haitumiki.
Naona unaleta maelezo ya CWR tu.
Mie nafunga mjadala pia nimekwambia North America sijasema United states of America.
Click to expand...
make use of google kwenye haya makala kuna vitu kama wear out and tear of the track material!

Ill Effects of a Rail Joint​


A rail joint is the weakest link in the track. At a joint, there is a break in the continuity of the rail in both the horizontal and the vertical planes because of the presence of the expansion gap and imperfection in the levels of rail heads. A severe jolt is also experienced at the rail joint when the wheels of vehicles negotiate the expansion gap. This jolt loosens the ballast under the sleeper bed, making the maintenance of the joint difficult. The fittings at the joint also become loose, causing heavy wear and tear of the track material. Some of the problems associated with the rail joint are as follows.

Maintenance effort

Due to the impact of moving loads on the joint, the packing under the sleeper loosens and the geometry of the track gets distorted very quickly because of which the joint requires frequent attention. It is generally seen that about 30% extra labour is required for the maintenance of a joint.

Lifespan

The life of rails, sleepers, and fastenings gets adversely affected due to the extra stresses created by the impact of moving loads on the rail joint. The rail ends particularly get battered and the hogged and chances of rail fracture at joints are considerably high due to fatigue stresses in the rail ends.

Noise effect

A lot of noise pollution is created due to rail joints, making rail travel uncomfortable.

Sabotage chances

Wherever there is a rail joint, there is a potential danger of the removal of fish plates and rails by miscreants and greater susceptibility to sabotage.

Impact on quality

The quality of the track suffers because of the excessive wear and tear of track components and rolling stock caused by rail joints.

Fuel consumption

The presence of rail joints results in increased fuel consumption because of the extra effort required by the locomotive to haul the train over these joints.


Ill Effects of a Rail Joint

eng.dieselloc.ru
 
Mashashola said:
Si nyinyi mmempea mchina tender ya kujenga electric esigiara?
Sgr ya Kenya imebeba mamillioni ya tani za mizigo na watu.
Click to expand...
Mombasa-Nairobi [emoji3][emoji3][emoji3][emoji16][emoji16][emoji16][emoji16][emoji23][emoji23][emoji23][emoji23][emoji23]

kila kitu kipo nairobi,nchi yenu ni yakijinga sana
 
Lusematic said:
Mombasa-Nairobi [emoji3][emoji3][emoji3][emoji16][emoji16][emoji16][emoji16][emoji23][emoji23][emoji23][emoji23][emoji23]

kila kitu kipo nairobi,nchi yenu ni yakijinga sana
Click to expand...
Eti kila kitu kipo Nairobi? The biggest port in East & Central Africa iko Mombasa 500km away from Nairobi so wacha kujifurahisha.
Tanzania ndo kila kitu ni dar-is-a-slum
 
Yani unatuletea sisi ka blog ka mtu alafu hako hako ka blog kanaongelea kuhusu continuous welded pekeake..
Bado sijaona chochote kuhusiana na jointed kuwa outdated..
Ishu ya modern rail km hujui sema uambiwe, sgr kenya pia ni moder au unabisha
 
Kila kitu kina advantages na disadvanges, huwezi kuja hapa uka justify ya kwamba jointed rail ni outdated kw maneno matupu kutoka kichwani mwako
 
Hehehe!!mzee mbona unahangaika sana hvo na vi blog uchwara, tena bado umeleta ripoti inayoongelea swala la continuos pekee
 
Bado unarudi kule kule sijaiona hiyo justification.
Kumbuka wenzako wanatumia standard gauge,broad gauge na maglev hao cape gauge narrow gauge na metre gauge wanatupilia mbali.
Kaka ukishindwa kutambua hapa basi.
 
Kosugi said:
Bado unarudi kule kule sijaiona hiyo justification.
Kumbuka wenzako wanatumia standard gauge,broad gauge na maglev hao cape gauge narrow gauge na metre gauge wanatupilia mbali.
Kaka ukishindwa kutambua hapa basi.
Click to expand...
Aside Japan, South Korea and China name me another country with maglev trains that are opertional!

FYI SGR-TZ is pretty like what is in Europe i.e. conventional high speed trains from continuos welded electrical SGR though they also have higher speed electrical SGR!

Kenya missed the boat preferring outdated jointed SGR that is being phased out across the globe! I feel sorry for Kunyaland being played by Chinese!

Germany cancels magnetic-levitation train line​


27. März 2008


BERLIN — The German government is abandoning plans to build a high-speed magnetic-levitation link to Munich airport because of spiraling costs, the transport minister said Thursday.

Wolfgang Tiefensee, the minister, told reporters the projected budget for the project had ballooned from €1.85 billion, or $2.9 billion, to as much as €3.4 billion.

"It is not possible to finance the project," Tiefensee told reporters, adding that the government had reached its decision by consulting with Bavarian state and industry leaders.

He said, however, that research and development for the maglev would continue in Germany and that customers would be sought beyond the Chinese, who put the first line into operation from Shanghai to the city's airport in 2004.


Plans to operate the trains in Germany have stalled for years, with cost a major concern.
Maglev trains float just above the track on a magnetic field, cutting resistance. They set a speed record of 581 kph, or 361 mph, in 2003.

The German maglev trains are built by Transrapid International, a consortium including ThyssenKrupp and Munich-based Siemens.

"The magnetic-levitation technology is a beacon of German technology," the Siemens chief executive Peter Löscher said in Berlin. "We see it as one of the most import German technologies for export."

Löscher said potential customers in Qatar and the United States had already expressed interest in the concept.

Construction of the roughly 40-kilometer, or 25-mile, stretch from Munich's main station to its airport was a pet project of the former Bavarian governor, Edmund Stoiber, who pushed for it to be built before leaving office last year.


The German federal government at the time agreed to shoulder half the cost, providing some €925 million. But it refused to increase that amount to €1.925 billion, as the projected costs jumped.

The Munich maglev project was met with fierce local criticism, including from the city's mayor, who favored a cheaper express rail link.

Germany has a well-developed network of conventional high-speed trains. The only Transrapid line in the nation so far is an experimental stretch in the rural northwest.

In September 2006, that line was the scene of a crash between a maglev train and a maintenance vehicle, in which 23 people were killed. Investigations pointed to human error as the likely cause.

Germany cancels magnetic-levitation train line (Published 2008)

www.nytimes.com
 
Nimetaja aina tatu za gauge kaka.
Broad,standard maglev.
Sijasema kama nchi zote zinatumia maglev nop.
Bali hzo aina tatu za reli ndizo wanazozitumia
 
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