Page 354 - IRSEM_Main Book

(iv) Emergency key IN and OUT contact must be proved in relevant
interlocking circuit so that; Signal shall be taken off only when
Emergency key is proved IN and signal Taken OFF must be put to
Most Restrictive aspect, if emergency key is taken OUT from EKT.

(v) There shall be a facility provided for Gateman to put back Gate Signal
to danger in case of emergency.

Section 2: Installation of LC Gates

14.2.1 Instructions for Mechanical/Electrical Lifting Barriers

(a) At stations, it is desirable that level crossings should not be located at
fouling reception, stabling lines, berthing track and signal overlaps. As far
as possible, level crossings should be provided at a place, which gives an
uninterrupted view not only to drivers of approaching trains but also to the
road users.

(b) Lifting barrier of approved type shall be installed.

(c) Interlocking arrangement at the interlocked gate shall be as per approved
plan and wiring diagram.

(d) The minimum distance of lifting barrier from the centre line of nearest track
shall be minimum 3.5 meters.

(e) Foundation for pedestal shall be of adequate strength.

(f) Lifting barrier shall have two booms, one each on either side of the track.
The boom of the barrier shall extend across the full width of the road. It
shall be installed perpendicular to the road. In case of wider roads
provided with road divider, provision of two half barriers, each set operated
diagonally by a separate winch in mechanical lifting barrier or operating
panel in electric lifting barrier may be provided. Pedestals should be
outside the road.

(g) For Mechanical Lifting Barrier, the boom rest (stop post) shall be in
alignment with the boom. The open position of the lifting barrier shall be
within 80° to 90° from the horizontal and the closed position shall be within
0° to 10° from the horizontal. Colour Light road user signal shall be
provided to indicate whether the gate is closed or open.

(h) When the gate is closed to road traffic, clearance between the road
surface level and the boom shall be 0.8 to 1 meter. The road surface level
shall be maintained as per concerned para of IRPWM.

(i) The open position for Electric Lifting Barrier, shall be as specified in the
relevant specification.

(j) Lifting barrier shall be so installed that it shall be possible to stop or
reverse its movement at any point during operation without damage.

(k) At the centre of the boom, the lifting barrier shall be provided with a 600
mm dia. red disc having red reflector/luminous strip facing the road traffic.

Chapter 14: LC Gates Page 305 of 535