Data Request for AC Interference Study: Railway Company

1.Provide scaled maps of the track system that parallel the path of the new 345 kV line. Maps should indicate railroad mileposts, road crossings, catenary structures, and signal locations, including road crossing names.

2.Identify main and side track circuits along the path of the 345 kV transmission line, including start and ending locations.

3.Identify any rail yard that exists along the path of the new 345 kV transmission line.

4.If electrified railroad, provide scaled maps of the power distribution system, including locations and one-line diagrams of electrical substations.

5.If electrified railroad, provide the following information: distribution (electrified supply) cable/conductor size and  composition; electrical insulator continuous voltage rating and BIL (basic Insulation Level) rating; location and  applicable ratings of surge/lightning arresters (same as item 8); list and ratings of substation equipment, including grounding details; electrical one-line diagram of the electrified railroad car’s power and traction system, including  ratings of electrical equipment.

6.If electrified railroad, provide typical grounding details of catenary structures, including typical a.c.(alternating current) footing resistance.

7.Typical range of ballast electrical resistivity for the track system; typical thickness or range of thickness, of the ballast.

8.Unit length of the rails.

9.Unit weight of the rail.

10.Size of rails.

11.Size and composition of ties.

12.Provide the following for each manufacturer: Insulating Joints; electrode or other type of signal; electric lock;batteries; relays; tuned joint couplers; narrow band shunts; wide band shunts.

13.Specify the range of impedances: inductance for electric locks, electrode or other type of signal circuits; capacitance for narrow and wide band shunts and tuned joint couplers.

14.Provide location of track surge arresters, manufacturers, rated capacities, and destruction rating currents.

15.Provide location and grounding details of track equipment housings.

16.Briefly describe the approaches for each crossing.

17.Provide physical layout of all communication systems along the path of the new 345 kV transmission  line.

18.For communication cable system, provide the following: type of cable, size of cable, high voltage rating  of cable insulation and manufacturer of cable system.

Resource Person

Please provide the name, telephone number, FAX number, and e-mail address of a resource person who can respond to inquiries related to the data requested above.