TRACK MAINTENANCE Master Copy for IRTMTCALD by IRICEN
TRACK MAINTENANCE Master Copy for IRTMTC/ALD by IRICEN
SAMPLE OF STANDARD SECTION OF TRACK At or near the commencement of each gang length between stations a sample of three rail lengths of track should be maintained in accordance with all standards laid down as given below– (1) Formation of standard width and level below rail. (2) Clean ballast of correct size, quantity and cross section. (3) Correct alignment, level and gauge. (4) Sleepers and fastenings in good condition.
ANNUAL REGULAR TRACK MAINTENANCE
ANNUAL MACHINE DEPLOYMENT The annual machine deployment programme shall be issued by CTE for • Track renewal • Rail grinding • Deep screening and • Shoulder screening machines based on yearly requirement of track maintenance
MONTHLY PLAN The monthly Page and weekly maintenance planning shall be based broadly on annual plan to include: (a) Plain track maintenance, (b) Maintenance of yards including point and crossings, (c) Maintenance and realignment of curves, (d) Level crossings, (e) Adjustment of creep, (SWR, Fish Plated track) (f) Deep screening, (g) Casual renewal, (h) Renewal of over-aged assets such as points and crossings, SEJs, Glued Joints, welds etc. (i) Welding of joints, (j) Destressing of long welded rails etc.
MECHANISED TRACK MAINTENANCE SYSTEM The 3 tier system of track maintenance shall be adopted on sections nominated for Mechanized track maintenance. This shall consist of the following 3 tiers of track maintenance: • On-track Machines Unit (OMU) • Mobile Maintenance Gang (MMG) • Sectional Gangs.
WORKS TO BE PERFORMED BY MACHINES These machines shall be deployed to carry out the following jobs: a) Systematic tamping of plain track as well as Points & Crossings; b) Intermediate tamping of plain track as well as Points & crossings; c) Shoulder ballast cleaning; d) Ballast profiling/redistribution; e) Track stabilization; f) Periodical deep screening; g) Picking up and transportation of material.
THE FUNCTIONS OF MMG SHALL BE AS UNDER: (i) Repair to rail/weld fracture including in-situ AT welding. (ii) Attention to SEJs. (iii) Scattered replacement of switches and crossing components, glued joints, SEJs, etc. (iv) Rail cutting/drilling and chamfering. (v) Spot renewals of rails and sleepers. (vi) Spot attention by Tamping of few sleepers with off-track tampers or any other approved equipment. (vii) Loading and unloading of material required for spot attention. (viii) Driving of RBMV. (ix) Any other functions assigned.
THE SECTIONAL GANGS SHALL PERFORM THE FOLLOWING FUNCTIONS: a) Systematic through packing of track where tamping machines have not been deployed or small stretches of track needing spot attention for which machines cannot be deployed due to whatever reasons. b) Overhauling of track. c) In addition to above following works are /may also be assigned: (i) Patrolling of track: • Keyman’s daily patrol • Hot/cold weather patrolling • Monsoon Patrolling (ii) Watching vulnerable locations
THE SECTIONAL GANGS SHALL PERFORM THE FOLLOWING FUNCTIONS CONTD… (iii) Need-based attention to bridges, turnouts, SEJs and level crossings and their approaches. (iv) Greasing of ERCs, lubrication of joints, casual changing of rubber pads and other fittings (v) Minor cess repairs (vi) Cleaning of drains (vii) Attention to loops (viii) Creep and gap adjustment not involving use of machines (ix) Pre & post tamping attention (x) Examination of rails, sleepers and fastenings including measurement of toe load of ERCs. (xi) Inspection of and attention to insulated joints, switch expansion joints etc. (xii) Weld collar painting, cess cleaning, cutting of tree branches/shrubs for improving visibility. (xiii) Any other functions assigned.
Through Packing by Conventional Manual Method: Normally manual through packing is not to be done in concrete sleeper track unless becomes unnecessary. Then , following steps in sequence shall be followed. (a) Opening of the road. (b) Examination of rails, sleepers and fastenings. (c) Squaring of sleepers. (d) Slewing of track to correct alignment. (e) Gauging. (f) Packing of sleepers. (g) Repacking of joint sleepers. (h) Boxing of ballast section and tidying.
SYSTEMATIC OVERHAULING: The length of the section to be overhauled shall be such that complete overhauling of track will be accomplished within a specific period (normally 3 to 5 years). The overhauling should be done using SBCM for cleaning of shoulder ballast.
MANNUAL DEEP SCREENING
SEQUENCE OF OPERATIONS
SEQUENCE OF OPERATIONS
SEQUENCE OF OPERATIONS
SEQUENCE OF OPERATIONS
SEQUENCE OF SPEED RELAXATION
SEQUENCE OF SPEED RELAXATION
MAINTENANCE OF TRACK IN ELECTRIFIED AREAS • Every engineering official working in electrified area shall be in possession of a copy of rules framed for the purpose of the operation of the Traction Power Distribution system pertaining to Engineering Department. • No work shall be commenced adjacent to any electrical equipment except on authority issued in writing by a competent official of the Electrical Department to the effect that the equipment has been made dead and earthed.
MAINTENANCE OF TRACK IN ELECTRIFIED AREAS To ensure a reliable electrical circuit continuity and to ensure proper earthing in case of leakage of current, various types of traction bonds as are provided and maintained by the Electrical Traction Department. • Longitudinal bond • Cross or traverse bond • Structure bond
Longitudinal bond Structure Bond Cross or traverse bond
TEMPORARY JUMPERING OF RAILS IN CASE OF RAIL FRACTURES
Maintenance of track in Track circuited areas • Approved cable route plans for all old laid cables should be available with S&T supervisors, so that S&T supervisors can advice about the locations of cable in case any Engg work which can damage cables • No cable laying work should be started without approved plan • Instruct the staff not place across or touching two rails in the track, any tool or metal object which may cause short circuiting.
Maintenance of track in Track circuited areas • While carrying out maintenance work care should be taken to see that no damage to track circuiting fittings. • Use of steel tapes to be avoided. • Pulling of rails should be done in the presence S&T staff where signalling connections are involved. • Proper drainage shall be provided to avoid flooding of track during rains particularly in yards. • Ballast must be kept clean throughout the track circuit and ballast resistance shall not be less than 2 ohm/km in station yard and 4 ohm/km in block section. • In PSC track availability of insulated liners upto 97% shall be ensured
Maintenance of track in Track circuited areas • Insulated joints wherever provided shall be maintained as square joints and where staggered cannot be avoided the distance between joints should not exceed minimum wheel base of the vehicles. • To avoid crushing of end posts of insulated joints creep should be effectively arrested. • Fish bolts should be tight and sleepers well packed. • In modern track Glued joints which have better insulation qualities should preferably be provided in place of standard insulated joints. • Glued joint sleepers should be suspended. • Insulated Cut liners and J type ERC clips shall be used in all GJ locations. • Rubber pads should be in good condition.
GFN CUT LINERS AND J TYPE ERC
Measuring tools, Pway inspection kit & its demonstration
GAUGE CUM LEVEL
MAGNETIC BASE RAIL THERMOMETER ROUND TYPE RAIL THERMOMETER
Versine Measurement kit
NON METALLIC TAPES
SSE (P. WAY) TOOL KIT BOX
SPANNERS
HAMMER
THANKS
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