Page 198 - IRSEM_Main Book

8.1.5 Details on Drawings

(a) All dimensions and distances shall be written carefully upon that part of the
drawing to which they refer. The distance to be embraced by the figures
shall be indicated by arrow heads. Figuring and descriptive matter should
be so printed that without moving the plan, it can be read with ease.

(b) The following information should invariably be shown on signalling
interlocking plans:

(i) Standard of interlocking and Class of station.

(ii) Holding capacity of all running lines and sidings.

(iii) Direction of reception and despatch on running lines and description of
sidings.

(iv) Restriction on dead-end sidings (For example: “Not For Stabling”) if any.

(v) All gradients within the station limits and up to 2.5 kilometres in rear of
first stop signal.

(vi) Kilometrage and class of level crossings within the station limits, whether
interlocked or not.

(vii) Type of Block Working with adjacent station and location of block
Instruments.

(viii) Up and Down directions and names of important junctions on either side.

(ix) Reference to condonation of gradient infringements, CRS's dispensation
for deviations from General Rules/Signal Engineering Manual, if any.

(x) Reference to approved Engineering plan based on which the
signalling interlocking plan is prepared.

(xi) Note regarding telephone communication provided between ASM/Cabin
man and level crossings within and outside station limits.

(xii) Aspect sequence chart.

(xiii) Whether turnout is 1 in 8-1/2 or 1 in 12 or 1 in 16 or Symmetrical split
or Thick web switch etc.

(xiv) Details of Detection Table etc. which are not apparent in the plan.

(xv) Details of Track Circuits/Axle Counter.

(xvi) Signals, Inter-signal distances and distance between Warning Boards
and Signals.

(xvii) Details of open bridges/RUB/ROB/LHS.

Chapter 8: Drawings & Specifications Page 165 of 535