LC GATES

      All roads should be preferably cross the Railway line at Right angles. In special cases,when modification is required to suit the Road approaches, the angle of crossing should not be less than 45 degree.( pway manual =906).

Minimum width of Road- Special class -7.5 m,others -5.5 m

OHE Height of contact wire - 5.50 mts to 5.75 mts from Rail level.Under bridge it is 4.65 m.

This height can be reduced to 4.54 m if carriage department certifies that no rolling stock above 4.27 m height will move on that line

All interlocked level crossing gates should be kept 'Normally open to Road traffic’.( pway manual =907). 

Periodical census once every three years. This shall be carried out for 7 days by Engg,traffic and SnT.

Train/ Four Wheeler/ Bullock Cart/Tonga - 01 unit.

Cycle Rikshaw/Auto Rikshaw - 0.50 unit

Spl class gates- TVU more than 50000

A Class gates- TVU 30000-50000   or Line Capacity utilization is 80% ( on Single line section) and no of Road vehicles more than 1000.

B Class gates - TVU 20000-30000., B class is further divided into two two sub groups 

        B1 Class - TVU from 25000 to 30000

        B2 Class - TVU from 20000 to  25000

C class gates - TVU less than 20000

     Spl class, A Class and B class gates are normally open to Road traffic while  C class are closed to Road traffic. If gate is in Station Section, it must be Interlocked irrespective of its class. Communication must be provided to every gate irrespective of its class. All the gates whose TVU is between 20000 to 50000 ( Class A and B),must also be Interlocked as per new SEM.

IF C class gate is in auto Section or sub urban, it must be Interlocked.

All the road signals should be of three aspects. Hooter will be kept in between red and yellow Aspect. Hooter must be connected with boom CB ( 10 to 80 degree). Height of boom must be between 0.8 metre to 1 metre. Stop board must be of Red color and written with white. Dia of this board is 600 mm. This board will be placed on both main as well as sliding barrier.

Color scheme  of boom whether electrical and mechanical alternate yellow and black.  Length of each yellow or black strip is 300 mm.

One major drawback of MLB is its can not be operated from more than 150 m. That's why gate lodge is made within 150m from gate.

Minimum distance of lifting barrier from centre of nearest track is  3.5 m Minimum.( As per new SEM).

Minimum distance of height gauge from çentre of track is 8 m..It's height is between 4.65 m to 4.70 m from Rail level.

When gate is open,  boom must be 80 to 90 degree.In closed condition it shall be 0 to 10 degree.

When gate is closed .clearance between the road surface level and the boom shall be 0.8 to 1m.

In mechanical gates,winch shall be located not more than 150 m from the gate and having clear visibility of the Road.

Emergency Sliding Boom must be outside lifting barrier.

Counter should be provided for logging gate man's extraction of Emergency key to open LC gate.

Road signal must be outside the height gauge. 

Dia of stop board is 600 mm and disc having red reflector/ luminous strip facing the road traffic. Boom shall be painted with alternate yellow and black strips for both ELB and MLB. Length of each strip is 300 mm.Stop board must be placed on sliding barrier also.

Minimum two power supply is required at gate. If DG is placed it must be of 10 kva and  with auto Changeover.

Arching Zone -Arching Zone of 25 KV is 25 cm. If anyone come in arching Zone, there are chances of getting shock.

Neutral Section- Neutral section must be located away from stop signals,level crossing gates and shall be  on tangent track on level to the possible. The distance should be preferably 1600 m away on Section with up gradient upto 1 in 300 and 2500 m with higher gradient. Neutral Section shall be located on level tangent at least 400 m after stop signal and 200 m before stop signal.Demarcation has been given to Loco pilot before 500 m for information and at 250 m for lowering the pentagram.

At LC gates in , Approach Locking to be provided due to continuous track circuit available. In other sections dead approach with 60 sec time delay to be provided.

At every manned LC Gate , there should be distinct indication at 600 m ( One detonator) and 1200 m ( 03 detonators at 10 m apart) on broad gauge on either side to guide gateman for placing detonators


Comments

Post a Comment

Popular posts from this blog

CRS , CST and PCE sanction

  Validity of CST sanction   is six months .Required when we are doing any changes in existing interlocking.e.g commissioning of BPAC Validity of CRS and PCE sanction are same (01 year). PCE sanction is required only for closing the LC gate.Earlier it was with CRS, now delegated to PCE. ESP,SIP,SWRD,PD and SWR required to be attached with PCE sanction.  CRS sanction is must when do any change in interlocking,e.g.any new line is opened. Validity of CRS sanction is 01 year. CRS permission is required in following cases. a) Additions/extensions or alterations to the existing block, Signalling and interlocking installations b) Change in Block, Signalling and Interlocking installations. c) New stations temporary or permanent. d) Interlocking of level crossings, catch siding and slip sidings etc. CST Sanction   CST Sanction required in following works 1) Provision of Telephone at already Manned level crossings. 2) Provision of electrical & mechanical lifting barrier including emergency
Read more

Catch Siding and Slip Siding

  Catch Siding is provided to protect the station section, if the gradient is steeper than 1 in 80 falling towards the station section. Slip Siding is provided to protect block section if the gradient is steeper than 1 in 100 towards Block Section. Normal permissible gradient for Block Section is 1:1200 and for Station Section is 1:400. Reception of Trains in Catch Siding Stations- (a) Either a minimum of two Stop Signals shall be provided in rear of the Catch Siding points or the First Stop Signal shall be at an adequate distance equal to Block overlap from the catch siding points. (b) A train shall first be brought to a stop at the First Stop Signal, before the Catch Siding points are set for the main line and the reception signals shall not be taken 'OFF' unless the following conditions are satisfied. (1) The line on which the train is to be received is clear and the train is to be received on the main line.  (ii) The points leading to the Catch Siding as well as all the Poi
Read more

Railway Establishment and Stores

  Max LAP approved one time - 180 days .( if available in his account). Max LHAP approved one time - 24 months ( if available in his account). Leave not due - Max 360 days in service. Can be sanctioned on medical grounds  Compensatory casual leave granted to Group C &D employees other than supervisory staff for attending on Sundays and holidays. Special casual leave    It is sanctioned for participation in sporting events/events of national importance,for scouting duties and family welfare. Special casual leave can be granted in following cases. Administration of operative society members. Participation in scouts . Participation in sports activities  Participation in railway union activities etc In bandh,curfew and national calamity. A railway Servant,who has taken CL for half a day on the afternoon of a working day due to unexpected sickness or compelling grounds and he has no CL at his credit, may as an exception to general rule,be permitted to combine half a day’s CL with regu
Read more