Page 563 - IRSEM_Main Book

36. "Point Device" means various equipment including ground connections such as Point
Machine and contact detector, which is used for changing, detecting and locking the
setting of Turnout.

37. "Repeater" means the communications device that amplifies (analog) or regenerates
(digital) the data signal in order to extend the transmission distance.
38. "Replacement" is as defined in "General Guidelines for Management of
Implementation Standards".

39. "Rolling Stock Depot" is as defined in "General Guidelines for Management of
Implementation Standards".
40. "Route" is as defined in "General Guidelines for Management of Implementation
Standards".

41. "Route Lock" means a kind of lock function of interlocking system. Route Lock shall lock
the Turnouts on the set Route until the Train (including Vehicle) pass through the
Route.

42. "Safe Signal Failure" means the same as "Right Side Failure" in MSS. It means types of
signal failure which will not cause danger to rail traffic and may only affect
performance of train operation.
43. "Sectional Route Lock" means a kind of lock function of interlocking system. Sectional
Route Lock shall lock the Turnouts on the set Route and progressively release the
Turnouts as soon as the Train (including Vehicle) passes through the section.
44. "Signalling Equipment including ATC for Safety of Train Operation" means following
devices to ensure safety of train operation and its management.

a) All the devices/equipment including displays required to facilitate stop/proceed
aspect on display devices in a safe manner.
b) The on-board & ground devices which indicate the condition(s) of Route ahead
and/or automatically decrease the speed of or stop the movement of a Train
(including Vehicle) in a safe manner.
For details of on-board device, refer to "Implementation Standard for MAHSR Rolling
Stock Maintenance".

c) The device which controls signal aspects and turnouts of stations and conducts the
Train operation management from a control centre (CTC).

45. "Stick Lock" means a kind of lock function of interlocking system. Stick Lock shall lock
the Turnouts on the set Route for specific time (release time).
46. "Supervisory Control and Data Acquisition System (hereinafter "SCADA")" means the
system which can remotely monitor and control all traction substations, sectioning
posts, sub-sectioning posts, auto-transformer post, distribution substations,
disconnectors (motorised) in Depot, tunnel separation disconnector equipment, and
other related facilities.
47. "Track Lock" means a kind of lock function of interlocking system. Track Lock shall lock
the Turnouts when the Train (including Vehicle) is on the track circuit which includes
these Turnouts.

Annexure G2: Brief of High Speed Signalling – Mumbai-Ahmedabad Page 506 of 535