(3) Total cost
Substation 5.70 x 5 = 28.5
Switching station and CC 329
Passenger station 0.42 x 24 = 10.08
Total US$ 41.87 million
As the cost of power transmission lines is US$39.63 per m,
39.63 US$/m x 26,000 m x 2 = US$2.06 million
Total: US$43.93 million
(4) Comments
In order to obtain electricity for motive power, ELRTS has to select one measure from the two alternatives: utilization of electric power supplied by the existing power network and private power generation.
In the latter case, it is difficult to enhance the reliability of power generation because the scale of the private power generation is small and also because there are same difficulties in installing reserve machines and establishing a new network of power generation. Furthermore, the amount of investment will be large against the capacity of the power generation facilities.
In the former case, although a large amount of investment is necessary to reinforce and expand the existing power network, the reliability of power supply is enhanced and other benefits including social contribution can be expected.
In view of the above, it is advisable for ELRTS to utilize, for its power source, the existing power network and promote the reinforcement and expansion of the network at the same time.
9.3.4.3 Signalling Equipment
To ensure the safety of train operation at a minimum headway of 120 seconds, a centralized train control (CTC) system shall be installed to control trains on the entire route from the operation controle center. Trains shall be equipped with cab signals according to which drivers operate trains. If a driver mistakenly interprets a signal or the train speed exceeds the limit an automatic train protection (ATP) system shall automatically halt the train to ensure safety.
A system shall be installed to maintain he safety of train operation by means of wayside signals and an ATP system, even if the ability to monitor and control trains through the CTC system fails. The cost of information transmission lines between the CTC equipment at the operation control center and stations arc included in the cost of telecommunications equipment.
When necessary, trains shall be able to run in the opposite direction by a command from the train dispatcher or the station with interlock system. Even in this case, the ATP system shal1 be able to protect trains in the same way as when trains are operated in the normal direction.
Trains on the track shall be detected by means of track circuit. We assume the use of transponders for transmitting information between trains and stationary sites. The cost of monitoring train operation and stationary elements of the ATP system are included in the cost of signal equipment.
The central processing equipment at the operation control center shall be designed to permit future expansion of the system. The system can be expanded at Little additional cost for central processing equipment, and for other equipments by referring to the cost estimates for Phase 1 if the manufacturer of
