Maintenance of Track carrying HAL Deep Screening Pradeep

Maintenance of Track carrying HAL - Deep Screening Pradeep Kumar Garg, Chief Engineer (TM), Central Railway

Introduction � Increasing Speeds & Running HAL is a necessity �Goal – to run the trains safely – With Least disturbance to traffic �Maintenance of Track is of utmost importance �Track requiring least maintenance �Speed of maintenance & quality of work

Basic Requirements of Track �Structural Integrity of Components �Strength v/s stresses �Track Geometry �Bringing Track to requisite geometry �Retentivity of track geometry �Role of Track Machines

Factors affecting Track Geometry �Initial Laying Standards of Track �Stability of Formation �Characteristics of Traffic �Standards of track maintenance & Quality of work done �Rail Wheel Interaction �Condition of Ballast

Role of Ballast �Means of correction to Track Geometry �Providing Good Drainage �Providing Resiliency to Track �Distribution of Load �Deep Screening �Prior to TSR/CTR �Once in 10 years �Intermediate D. S. on condition basis

Unclean Ballast �No drainage �Increased stresses Ø HIGH Stresses on Track Components �Crushed GRSP �Notched/ Broken Sleepers �Rail / weld breakages Ø Poor Running Ø Fast deterioration of Track Geometry

Deep Screening on Central Railway Div BB BSL NGP PUNE SUR C. Rly. Deep Screening of Plain Track Total M/L Track (Km) Due for D. S. (Km) % Due Deep Screening of Turn- Require outs Total M/L turnouts (Nos) Due for D. S (Nos) % Due 1241 923 74. 4 1091 657 60. 2 1448 770 53. 2 680 211 31. 0 1732 446 25. 8 731 217 29. 7 639 336 52. 6 328 97 29. 6 1087 296 27. 2 478 72 15. 1 6147 2771 45. 1 3308 1254 37. 9 ment of D. S. per year 206 196 228 89 145 863

Progress of Deep Screening Div BB BSL NGP PUNE SUR C. Rly. Progress by BCM in 2015 -16 Plain Track Turn-outs* Total 41. 9 78. 4 59. 6 21. 9 35. 9 237. 7 3 8 33 5 30 79 Progress/mc/ month in 2015 -16 44. 1 84. 4 25. 7 58. 4 297 No. of BCMs on C. Rly. in 2015 -16 = 8 One more BCM commissioned in June 2016 2. 23 3. 53 3. 46 2. 97 3. 32 3. 15

Progress Parameters for BCM �Railway Board’s Stipulations �Block 4 hours /day �Progress per effective hour = 200 m �Effective block for work = 3 hours � 25 working days in a month �Progress per BCM per month = 15 km �Avg Progress /mc/month on CR = 3. 15 km �Avg Progress /mc/month on IR = 4. 25 km �Highest Progress on IR (WCR) = 5. 5 km

Why Dismal Progress of D. S. ? �Obstructions in the track �Cables, Foundations, Boulders, Rails, tie bars etc �Sleepers, Side drains, old parapet walls etc �Under ballasting/over ballasting in the section �Fixed Structures (LC/GB) encountered in the section � 2 BCMs working in group – patch complete �Wet soil - Jamming of screens, Jamming of cutter chain �Availability of ETA in the section �Blocks granted & Duration of Block

Availability of Corridor Blocks Division Section BSL IGP-BSL BSL-KNW PUNE-LNL PUNE-DD SUR DD-MO MO-SUR SUR-WD Road DN UP DN/UP/SL DN UP DN/UP/SL Corridor block (hrs. ) 1’ 30’’ to 3’ 00’’ 1’ 20’’ to 1’ 30’’ 2’ 00’’ to 2’ 50’’ 2’ 15’’ 2’ 00’’ 2’ 05’’ 2’ 00’’ to 2’ 15’’ 1’ 15’’ to 2’ 35’’ 2’ 30’’ to 3’ 00’’ 2’ 50’’ 1’ 15’’ to 2’ 15’’

40 38 50 35 34 45 39 52 41 50 42 55 55 57 57 60 58 61 65 Block/mc/mth Progress/mc/mth -17 16 20 -16 15 20 -15 14 20 -14 13 20 -13 20 12 12 1120 20 10 -11 40 48 46 44 42 40 38 36 34 32 30 Progress per month (kms) Blocks per month (Hours) Plain Tampers – Blocks & Progress

44 42. 9 51 52 53 54 53 52 51 50 49 48 47 46 45 44 34. 5 37. 3 35. 7 38 36 46 36. 4 40 48 36. 0 48 49 40. 4 42 34 Progress/mc/mth -17 16 20 -16 15 20 -15 14 20 -14 13 20 -13 12 20 12 1120 20 10 -11 32 Block/mc/mth Progress per month (t/outs) Blocks/month (Hours) UNIMAT – Blocks & Progress

49 43 4. 1 3. 5 3. 1 3. 0 4. 5 4. 0 3. 5 39 42 43 44 46 50 48 46 44 42 40 38 36 34 32 30 3. 2 3. 1 Progress per month (kms) 3. 0 2. 7 2. 5 Block/mc/mth Progress/mc/mth -17 16 20 -16 15 20 -15 14 20 -14 13 20 -13 12 20 12 1120 10 -11 2. 0 20 Blocks/month (Hours) BCM – Blocks & Progress

% increase in Blocks & Progress Dec 2016 over Nov 2016 Dec 2016 over Dec 2015 • With 18% increase in blocks, BCM progress increased by 31% • With 78% increase in blocks, BCM progress increased by 153%

Requirement of BCMs on CR �Track Length on CR = 6150 kms �Turn-outs on main line = 3308 �Arrears of DS on plain track = 2770 kms �Arrears of DS for turn-outs = 1254 nos. �To wipe out arrears + DS due in next 5 yrs, DS to be done per year = 930 kms �Assuming progress of 4 kms/year/BCM (+30%), no. of BCMs required = 20

Bridging The Gap Increasing Output of Machines �Condemnation of old & inefficient machines in phased manner �Maintenance of machines on sound principles �Use of original/ branded spares �Removal of Obstructions in advance �Optimum Ballasting of track �Faster relaxation of SRs

Bridging The Gap Increasing Traffic Blocks �Is there any incentive for Traffic Deptt for granting the blocks �Is it possible to grant longer blocks continuously when adequate corridors have not been provided �Imposing SRs if deep screening is in arrears

The Way Ahead & Conclusions �Timely Deep Screening of Track – Essential for proper track behaviour �Rationalization of frequency of Deep Screening �Ensuring proper upkeep & performance of machines �Measures for increasing output of machines

The Way Ahead & Conclusions �Creating margins for corridor blocks in WTT �Regulation of trains; TSL for granting blocks �Joint Accountability of Engg. & Traffic Deptt for the work �Integrated Block Planning �Group working of machines �Manual Deep Screening at selected locations

THANKS