SlideShare a Scribd company logo
1 of 24
The Rails, being the most vital component of track, require
careful handling to achieve desired service life.
Any carelessness in loading, unloading, handling and
laying will not only contribute towards bad running but
may cause bending, indentation or damage to the surface
,rendering the rails unserviceable and/or leading to
premature failures of rails.
The use of higher UTS rails has been necessitated to
meet the requirement of traffic.
Earlier 72 UTS rails were being used in track which
were having less hardness and more ductility.
Due to less carbon content (0.45 to 0.60%), the
hardness and UTS of 72 UTS rails was less and
these were less prone to fracture.
But with the introduction of BOXN wagons with
cast wheels of higher hardness ,the 72 UTS rails
were having alarming wear especially on curves.
To overcome this problem use of 90 UTS and 110
UTS rails started progressively. (carbon content in
90 UTS rails is 0.60 to 0.80%)
90 UTS rails are less prone to wear due to more
hardness but at the same time more susceptible to
fracture.
90 UTS rails, being brittle in nature, are
particularly susceptible to sudden fracture from
locations of even minor dents /deformity. Hence
lot of care has to be exercised in handling of rails
at all stages.
Barely visible straightness variations renders a rail
unacceptable and require careful handling and
stacking. Therefore,
Avoid
 Heavy static loading
 sudden impact
 Single point slinging
 Excessive end drop and flange overlap while lifting
or moving
DOs
Two point slinging for rails up to 13m length. Increase
slinging point at the rate of 1 per 6.5m
Keep rails horizontal and straight while
lifting/carrying/stacking
Rails to be kept in upright [head up] in straight
alignment.
Provide suitable spacer/dunnage to protect rails
against point contact.
The single point slinging increases risk of excessive
bending and surface damage to the rails.
“The overhang beyond outer lifting point should not
be greater than one half the distance between lifting
points.”
 Single point slinging to be avoided.
 Use two point slinging for rail up to 13 m.
RAIL
LENGTH
(M)
NO. OF
LIFTING
POINTS
DISTANCE
BETWEEN
LIFTING
MAX. RAIL
END
OVERHANG
(M)
12-13 2 6-6.5 3-3.25
26 4 6.5 3.25
39 6 6.5 3.25
130 20 6.5 3.25
260 40 6.5 3.25
Recommended locations of handling points for
various rail lengths
Materials, whether new or old, lying along side the
track is always a potential source of danger and efforts
should be made to handle it as per best practices and
laid down guidelines.
 Instruction regarding unloading and stacking of P.
Way materials on Cess have been laid down in Para
310 of IRPWM.
Arrangement for Placement of Rails along the track ,as
per Drawing No. RDSO/T-8413
 After unloading the rails care should be taken to ensure
that there is no infringement and the rails are placed on
firm base to eliminate the possibility of their sliding down
due to vibrations and infringing the moving dimensions.
 Same care should be taken for rails released from the
works of rail.
 For panel of larger length (say beyond 250 m), special care
shall be taken to ensure that the panels do not
buckle/distort and infringe the moving dimensions as a
result of bad handling and stacking.
Surface notches of even less than 0.75 mm in depth are
liable to cause rail fracture in service. Therefore,
Avoid
 Impact or abrasion of rails against separators in wagons.
 Round link chain slings for securing the rails.
 Crossing or flange overlap while stacking or making rail
bundles. Suitable spacers to be used while making rail
bundles.
 Any rail support, handling or clamping device and rail
pinch rollers which apply localized or point contact to
the rail.
Dos
 Where conventional slings are employed, use of fabric,
e.g. polypropylene slings/sleeves is recommended. As an
alternative, if flat link chains are used, these should be
fitted with fabric sleeves.
 Ideally, lift the rails by using electro-magnetic lifting
devices
Rails are thermally very sensitive and are likely to develop
metallurgical defects, if exposed to localized heating,
which produces very hard, brittle metallurgical structures
which may lead to sudden failure.
Avoid
 Heating, flame cutting, on or adjacent to rails.
 Contact with electric arcs and molten metal splashes ,i.e.
from adjacent welding operations .
 Early removal of mould , inadequate preheating in welding
operations.
Rails withstand normal degree of rusting but
localised corrosion pitting may cause subsequent
rail fracture.
Avoid
 Contact with injurious substances which cause high
corrosion of steel , i.e. such as acids, alkalis, salts,
fertilizers etc.
DOs
 Stack rails on well drained platform preferably of
concrete base as per Drg. No. RDSO/T-6219
Avoid
 Overlapping of rail flanges
 Crossing of layers when dunnage is used
 Leaning stack by placing rail ends (rails of the same
length) in vertical alignment.
 Localised point or line contact loading in stacking
 Criss-cross stacking of rails of alternative layers as at
right angle as far as possible
DOs
Stack rails of same length [as far as possible] on firm
level base of well drained platform providing uniform
support, as per Drawing No. RDSO/T-6219.
 Each stack of the rail should of the same section and class.
 Successive layers may be of the same or decreasing width
for stacking of unequal length of rails.
Subsequent layers should be separated with
uniformly placed suitable spacers or dunnage in
vertical alignment with base supports.
Place rails of shorter length in upper layers.
Use of suitable rail handling equipment, such as
electromagnetic lifting devices, rail grips etc.
CE Circular No.-246 & 181
Para 254,255 & 310 of IRPWM
Revised FBW Manual-2012
Technical Diary-2014
CT-35:RDSO Guidelines for Handling and Stacking of
Rails
Thank You

More Related Content

What's hot

3.alignment of railway lines
3.alignment of railway lines3.alignment of railway lines
3.alignment of railway linesMani Vel
 
railway failure and its type
railway failure and its typerailway failure and its type
railway failure and its typeYash Patel
 
Railway Engineering Assignment - Types of Sleepers
Railway Engineering Assignment - Types of SleepersRailway Engineering Assignment - Types of Sleepers
Railway Engineering Assignment - Types of SleepersTheerumalai Ga
 
Coning of Wheels in Railways & Rail Creep
Coning of Wheels in Railways & Rail CreepConing of Wheels in Railways & Rail Creep
Coning of Wheels in Railways & Rail CreepRAMPRASAD KUMAWAT
 
Fittings and Fastenings of Rails.pdf
Fittings and Fastenings of Rails.pdfFittings and Fastenings of Rails.pdf
Fittings and Fastenings of Rails.pdfTVijayaGowri
 
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...Hossam Shafiq I
 
Unit ii railways
Unit ii railwaysUnit ii railways
Unit ii railwaysVipul Naidu
 
Rail fastenings and joints
Rail fastenings and jointsRail fastenings and joints
Rail fastenings and jointsDeven Diran
 
Railway Engineering: signaling, interlocking, train control system
Railway Engineering: signaling, interlocking, train control systemRailway Engineering: signaling, interlocking, train control system
Railway Engineering: signaling, interlocking, train control systemBathla Tuition Centre
 
Traction OHE 30.07.2019.ppt
Traction OHE 30.07.2019.pptTraction OHE 30.07.2019.ppt
Traction OHE 30.07.2019.pptAshish585772
 
Signalling in Railways
Signalling in RailwaysSignalling in Railways
Signalling in RailwaysAnupama Jha
 
Chapter 7 Maintenance of railway track
Chapter 7 Maintenance of railway trackChapter 7 Maintenance of railway track
Chapter 7 Maintenance of railway trackKHUSHBU SHAH
 
Point and crossing of railway
Point and crossing of railwayPoint and crossing of railway
Point and crossing of railwayRAMPRASAD KUMAWAT
 
Different types of rail failures
Different types of rail failuresDifferent types of rail failures
Different types of rail failuresSunil Kumar Meena
 

What's hot (20)

Railway signal
Railway signalRailway signal
Railway signal
 
turnouts in railways
 turnouts in railways turnouts in railways
turnouts in railways
 
3.alignment of railway lines
3.alignment of railway lines3.alignment of railway lines
3.alignment of railway lines
 
railway failure and its type
railway failure and its typerailway failure and its type
railway failure and its type
 
Railway Engineering Assignment - Types of Sleepers
Railway Engineering Assignment - Types of SleepersRailway Engineering Assignment - Types of Sleepers
Railway Engineering Assignment - Types of Sleepers
 
Railway track
Railway trackRailway track
Railway track
 
Coning of Wheels in Railways & Rail Creep
Coning of Wheels in Railways & Rail CreepConing of Wheels in Railways & Rail Creep
Coning of Wheels in Railways & Rail Creep
 
Fittings and Fastenings of Rails.pdf
Fittings and Fastenings of Rails.pdfFittings and Fastenings of Rails.pdf
Fittings and Fastenings of Rails.pdf
 
Railway Track Maintenance
Railway Track  MaintenanceRailway Track  Maintenance
Railway Track Maintenance
 
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...
08 Maintenance of Railway Tracks (Railway Engineering Lectures هندسة السكك ال...
 
Unit ii railways
Unit ii railwaysUnit ii railways
Unit ii railways
 
Rail fastenings and joints
Rail fastenings and jointsRail fastenings and joints
Rail fastenings and joints
 
Railway Engineering: signaling, interlocking, train control system
Railway Engineering: signaling, interlocking, train control systemRailway Engineering: signaling, interlocking, train control system
Railway Engineering: signaling, interlocking, train control system
 
Traction OHE 30.07.2019.ppt
Traction OHE 30.07.2019.pptTraction OHE 30.07.2019.ppt
Traction OHE 30.07.2019.ppt
 
Signalling in Railways
Signalling in RailwaysSignalling in Railways
Signalling in Railways
 
Railway engineering
Railway engineeringRailway engineering
Railway engineering
 
Chapter 7 Maintenance of railway track
Chapter 7 Maintenance of railway trackChapter 7 Maintenance of railway track
Chapter 7 Maintenance of railway track
 
Point and crossing of railway
Point and crossing of railwayPoint and crossing of railway
Point and crossing of railway
 
Railway track:An Introduction
Railway track:An IntroductionRailway track:An Introduction
Railway track:An Introduction
 
Different types of rail failures
Different types of rail failuresDifferent types of rail failures
Different types of rail failures
 

Similar to Correct method of handling and stacking of rails

Defects in rails. Railway Engineering
Defects in rails. Railway EngineeringDefects in rails. Railway Engineering
Defects in rails. Railway EngineeringIrfan Nasir
 
Railway Planning - Unit 1
Railway Planning - Unit 1Railway Planning - Unit 1
Railway Planning - Unit 1Arun G
 
RAILWAY ENGINEERING.pptx
RAILWAY ENGINEERING.pptxRAILWAY ENGINEERING.pptx
RAILWAY ENGINEERING.pptxssuser523d4d
 
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...Hossam Shafiq I
 
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...Hossam Shafiq I
 
Current collction system.pptx
Current collction system.pptxCurrent collction system.pptx
Current collction system.pptxssuserca5764
 
Introduction railway engineering
Introduction railway engineeringIntroduction railway engineering
Introduction railway engineeringDnyaneshwar More
 
Sleepers and Ballast
Sleepers and Ballast Sleepers and Ballast
Sleepers and Ballast T.Naga Anusha
 
introductiontobridges07-08-090507223401-phpapp02.pdf
introductiontobridges07-08-090507223401-phpapp02.pdfintroductiontobridges07-08-090507223401-phpapp02.pdf
introductiontobridges07-08-090507223401-phpapp02.pdfabhinavbharat9
 

Similar to Correct method of handling and stacking of rails (20)

Defects in rails. Railway Engineering
Defects in rails. Railway EngineeringDefects in rails. Railway Engineering
Defects in rails. Railway Engineering
 
3rd unit
3rd unit3rd unit
3rd unit
 
Railway engineering
Railway engineeringRailway engineering
Railway engineering
 
Sleeper
Sleeper Sleeper
Sleeper
 
Railway Planning - Unit 1
Railway Planning - Unit 1Railway Planning - Unit 1
Railway Planning - Unit 1
 
RAILWAY ENGINEERING.pptx
RAILWAY ENGINEERING.pptxRAILWAY ENGINEERING.pptx
RAILWAY ENGINEERING.pptx
 
Longwall machinery
Longwall  machineryLongwall  machinery
Longwall machinery
 
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...
04 Rail Sleepers (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Wal...
 
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...
05 Rails (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. E...
 
Current collction system.pptx
Current collction system.pptxCurrent collction system.pptx
Current collction system.pptx
 
Introduction railway engineering
Introduction railway engineeringIntroduction railway engineering
Introduction railway engineering
 
Chain conveyors
Chain conveyorsChain conveyors
Chain conveyors
 
Wireropes edit
Wireropes editWireropes edit
Wireropes edit
 
Unit 1.pptx
Unit 1.pptxUnit 1.pptx
Unit 1.pptx
 
Sleepers and Ballast
Sleepers and Ballast Sleepers and Ballast
Sleepers and Ballast
 
Bearings
BearingsBearings
Bearings
 
bridge Bearings.ppt
bridge Bearings.pptbridge Bearings.ppt
bridge Bearings.ppt
 
Innovative Technology for Steel Melt Shop
Innovative Technology for Steel Melt ShopInnovative Technology for Steel Melt Shop
Innovative Technology for Steel Melt Shop
 
Apron feeder
Apron feeder Apron feeder
Apron feeder
 
introductiontobridges07-08-090507223401-phpapp02.pdf
introductiontobridges07-08-090507223401-phpapp02.pdfintroductiontobridges07-08-090507223401-phpapp02.pdf
introductiontobridges07-08-090507223401-phpapp02.pdf
 

More from Prem Prakash Kumar

Report on insertion of br. approach sleeper to standardised the approach slee...
Report on insertion of br. approach sleeper to standardised the approach slee...Report on insertion of br. approach sleeper to standardised the approach slee...
Report on insertion of br. approach sleeper to standardised the approach slee...Prem Prakash Kumar
 
Translamatic robotic reconditioning by aden(pku)
Translamatic robotic reconditioning by aden(pku)Translamatic robotic reconditioning by aden(pku)
Translamatic robotic reconditioning by aden(pku)Prem Prakash Kumar
 
Rail Grinding Machine:A Basic approach
Rail Grinding Machine:A Basic approachRail Grinding Machine:A Basic approach
Rail Grinding Machine:A Basic approachPrem Prakash Kumar
 

More from Prem Prakash Kumar (7)

Report on insertion of br. approach sleeper to standardised the approach slee...
Report on insertion of br. approach sleeper to standardised the approach slee...Report on insertion of br. approach sleeper to standardised the approach slee...
Report on insertion of br. approach sleeper to standardised the approach slee...
 
Noble thoughts
Noble thoughtsNoble thoughts
Noble thoughts
 
Monsoon precaution [aden pku]
Monsoon precaution [aden pku]Monsoon precaution [aden pku]
Monsoon precaution [aden pku]
 
Translamatic robotic reconditioning by aden(pku)
Translamatic robotic reconditioning by aden(pku)Translamatic robotic reconditioning by aden(pku)
Translamatic robotic reconditioning by aden(pku)
 
Rail Grinding Machine:A Basic approach
Rail Grinding Machine:A Basic approachRail Grinding Machine:A Basic approach
Rail Grinding Machine:A Basic approach
 
Development dynamics
Development dynamicsDevelopment dynamics
Development dynamics
 
Administrative tribunals
Administrative tribunalsAdministrative tribunals
Administrative tribunals
 

Recently uploaded

Design For Accessibility: Getting it right from the start
Design For Accessibility: Getting it right from the startDesign For Accessibility: Getting it right from the start
Design For Accessibility: Getting it right from the startQuintin Balsdon
 
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...jabtakhaidam7
 
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...vershagrag
 
Unleashing the Power of the SORA AI lastest leap
Unleashing the Power of the SORA AI lastest leapUnleashing the Power of the SORA AI lastest leap
Unleashing the Power of the SORA AI lastest leapRishantSharmaFr
 
Hostel management system project report..pdf
Hostel management system project report..pdfHostel management system project report..pdf
Hostel management system project report..pdfKamal Acharya
 
Learn the concepts of Thermodynamics on Magic Marks
Learn the concepts of Thermodynamics on Magic MarksLearn the concepts of Thermodynamics on Magic Marks
Learn the concepts of Thermodynamics on Magic MarksMagic Marks
 
Theory of Time 2024 (Universal Theory for Everything)
Theory of Time 2024 (Universal Theory for Everything)Theory of Time 2024 (Universal Theory for Everything)
Theory of Time 2024 (Universal Theory for Everything)Ramkumar k
 
Double Revolving field theory-how the rotor develops torque
Double Revolving field theory-how the rotor develops torqueDouble Revolving field theory-how the rotor develops torque
Double Revolving field theory-how the rotor develops torqueBhangaleSonal
 
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...drmkjayanthikannan
 
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdfAldoGarca30
 
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Service
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best ServiceTamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Service
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Servicemeghakumariji156
 
data_management_and _data_science_cheat_sheet.pdf
data_management_and _data_science_cheat_sheet.pdfdata_management_and _data_science_cheat_sheet.pdf
data_management_and _data_science_cheat_sheet.pdfJiananWang21
 
Introduction to Serverless with AWS Lambda
Introduction to Serverless with AWS LambdaIntroduction to Serverless with AWS Lambda
Introduction to Serverless with AWS LambdaOmar Fathy
 
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptx
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptxS1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptx
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptxSCMS School of Architecture
 
Digital Communication Essentials: DPCM, DM, and ADM .pptx
Digital Communication Essentials: DPCM, DM, and ADM .pptxDigital Communication Essentials: DPCM, DM, and ADM .pptx
Digital Communication Essentials: DPCM, DM, and ADM .pptxpritamlangde
 
COST-EFFETIVE and Energy Efficient BUILDINGS ptx
COST-EFFETIVE  and Energy Efficient BUILDINGS ptxCOST-EFFETIVE  and Energy Efficient BUILDINGS ptx
COST-EFFETIVE and Energy Efficient BUILDINGS ptxJIT KUMAR GUPTA
 
Introduction to Data Visualization,Matplotlib.pdf
Introduction to Data Visualization,Matplotlib.pdfIntroduction to Data Visualization,Matplotlib.pdf
Introduction to Data Visualization,Matplotlib.pdfsumitt6_25730773
 

Recently uploaded (20)

Design For Accessibility: Getting it right from the start
Design For Accessibility: Getting it right from the startDesign For Accessibility: Getting it right from the start
Design For Accessibility: Getting it right from the start
 
FEA Based Level 3 Assessment of Deformed Tanks with Fluid Induced Loads
FEA Based Level 3 Assessment of Deformed Tanks with Fluid Induced LoadsFEA Based Level 3 Assessment of Deformed Tanks with Fluid Induced Loads
FEA Based Level 3 Assessment of Deformed Tanks with Fluid Induced Loads
 
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...
Jaipur ❤CALL GIRL 0000000000❤CALL GIRLS IN Jaipur ESCORT SERVICE❤CALL GIRL IN...
 
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...
💚Trustworthy Call Girls Pune Call Girls Service Just Call 🍑👄6378878445 🍑👄 Top...
 
Unleashing the Power of the SORA AI lastest leap
Unleashing the Power of the SORA AI lastest leapUnleashing the Power of the SORA AI lastest leap
Unleashing the Power of the SORA AI lastest leap
 
Hostel management system project report..pdf
Hostel management system project report..pdfHostel management system project report..pdf
Hostel management system project report..pdf
 
Cara Menggugurkan Sperma Yang Masuk Rahim Biyar Tidak Hamil
Cara Menggugurkan Sperma Yang Masuk Rahim Biyar Tidak HamilCara Menggugurkan Sperma Yang Masuk Rahim Biyar Tidak Hamil
Cara Menggugurkan Sperma Yang Masuk Rahim Biyar Tidak Hamil
 
Learn the concepts of Thermodynamics on Magic Marks
Learn the concepts of Thermodynamics on Magic MarksLearn the concepts of Thermodynamics on Magic Marks
Learn the concepts of Thermodynamics on Magic Marks
 
Theory of Time 2024 (Universal Theory for Everything)
Theory of Time 2024 (Universal Theory for Everything)Theory of Time 2024 (Universal Theory for Everything)
Theory of Time 2024 (Universal Theory for Everything)
 
Double Revolving field theory-how the rotor develops torque
Double Revolving field theory-how the rotor develops torqueDouble Revolving field theory-how the rotor develops torque
Double Revolving field theory-how the rotor develops torque
 
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...
Unit 4_Part 1 CSE2001 Exception Handling and Function Template and Class Temp...
 
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf
1_Introduction + EAM Vocabulary + how to navigate in EAM.pdf
 
Integrated Test Rig For HTFE-25 - Neometrix
Integrated Test Rig For HTFE-25 - NeometrixIntegrated Test Rig For HTFE-25 - Neometrix
Integrated Test Rig For HTFE-25 - Neometrix
 
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Service
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best ServiceTamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Service
Tamil Call Girls Bhayandar WhatsApp +91-9930687706, Best Service
 
data_management_and _data_science_cheat_sheet.pdf
data_management_and _data_science_cheat_sheet.pdfdata_management_and _data_science_cheat_sheet.pdf
data_management_and _data_science_cheat_sheet.pdf
 
Introduction to Serverless with AWS Lambda
Introduction to Serverless with AWS LambdaIntroduction to Serverless with AWS Lambda
Introduction to Serverless with AWS Lambda
 
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptx
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptxS1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptx
S1S2 B.Arch MGU - HOA1&2 Module 3 -Temple Architecture of Kerala.pptx
 
Digital Communication Essentials: DPCM, DM, and ADM .pptx
Digital Communication Essentials: DPCM, DM, and ADM .pptxDigital Communication Essentials: DPCM, DM, and ADM .pptx
Digital Communication Essentials: DPCM, DM, and ADM .pptx
 
COST-EFFETIVE and Energy Efficient BUILDINGS ptx
COST-EFFETIVE  and Energy Efficient BUILDINGS ptxCOST-EFFETIVE  and Energy Efficient BUILDINGS ptx
COST-EFFETIVE and Energy Efficient BUILDINGS ptx
 
Introduction to Data Visualization,Matplotlib.pdf
Introduction to Data Visualization,Matplotlib.pdfIntroduction to Data Visualization,Matplotlib.pdf
Introduction to Data Visualization,Matplotlib.pdf
 

Correct method of handling and stacking of rails

  • 1.
  • 2. The Rails, being the most vital component of track, require careful handling to achieve desired service life. Any carelessness in loading, unloading, handling and laying will not only contribute towards bad running but may cause bending, indentation or damage to the surface ,rendering the rails unserviceable and/or leading to premature failures of rails.
  • 3. The use of higher UTS rails has been necessitated to meet the requirement of traffic. Earlier 72 UTS rails were being used in track which were having less hardness and more ductility. Due to less carbon content (0.45 to 0.60%), the hardness and UTS of 72 UTS rails was less and these were less prone to fracture.
  • 4. But with the introduction of BOXN wagons with cast wheels of higher hardness ,the 72 UTS rails were having alarming wear especially on curves. To overcome this problem use of 90 UTS and 110 UTS rails started progressively. (carbon content in 90 UTS rails is 0.60 to 0.80%)
  • 5. 90 UTS rails are less prone to wear due to more hardness but at the same time more susceptible to fracture. 90 UTS rails, being brittle in nature, are particularly susceptible to sudden fracture from locations of even minor dents /deformity. Hence lot of care has to be exercised in handling of rails at all stages.
  • 6. Barely visible straightness variations renders a rail unacceptable and require careful handling and stacking. Therefore, Avoid  Heavy static loading  sudden impact  Single point slinging  Excessive end drop and flange overlap while lifting or moving
  • 7. DOs Two point slinging for rails up to 13m length. Increase slinging point at the rate of 1 per 6.5m Keep rails horizontal and straight while lifting/carrying/stacking Rails to be kept in upright [head up] in straight alignment. Provide suitable spacer/dunnage to protect rails against point contact.
  • 8. The single point slinging increases risk of excessive bending and surface damage to the rails. “The overhang beyond outer lifting point should not be greater than one half the distance between lifting points.”  Single point slinging to be avoided.  Use two point slinging for rail up to 13 m.
  • 9. RAIL LENGTH (M) NO. OF LIFTING POINTS DISTANCE BETWEEN LIFTING MAX. RAIL END OVERHANG (M) 12-13 2 6-6.5 3-3.25 26 4 6.5 3.25 39 6 6.5 3.25 130 20 6.5 3.25 260 40 6.5 3.25 Recommended locations of handling points for various rail lengths
  • 10. Materials, whether new or old, lying along side the track is always a potential source of danger and efforts should be made to handle it as per best practices and laid down guidelines.  Instruction regarding unloading and stacking of P. Way materials on Cess have been laid down in Para 310 of IRPWM. Arrangement for Placement of Rails along the track ,as per Drawing No. RDSO/T-8413
  • 11.  After unloading the rails care should be taken to ensure that there is no infringement and the rails are placed on firm base to eliminate the possibility of their sliding down due to vibrations and infringing the moving dimensions.  Same care should be taken for rails released from the works of rail.  For panel of larger length (say beyond 250 m), special care shall be taken to ensure that the panels do not buckle/distort and infringe the moving dimensions as a result of bad handling and stacking.
  • 12.
  • 13.
  • 14.
  • 15. Surface notches of even less than 0.75 mm in depth are liable to cause rail fracture in service. Therefore, Avoid  Impact or abrasion of rails against separators in wagons.  Round link chain slings for securing the rails.  Crossing or flange overlap while stacking or making rail bundles. Suitable spacers to be used while making rail bundles.  Any rail support, handling or clamping device and rail pinch rollers which apply localized or point contact to the rail.
  • 16. Dos  Where conventional slings are employed, use of fabric, e.g. polypropylene slings/sleeves is recommended. As an alternative, if flat link chains are used, these should be fitted with fabric sleeves.  Ideally, lift the rails by using electro-magnetic lifting devices
  • 17. Rails are thermally very sensitive and are likely to develop metallurgical defects, if exposed to localized heating, which produces very hard, brittle metallurgical structures which may lead to sudden failure. Avoid  Heating, flame cutting, on or adjacent to rails.  Contact with electric arcs and molten metal splashes ,i.e. from adjacent welding operations .  Early removal of mould , inadequate preheating in welding operations.
  • 18. Rails withstand normal degree of rusting but localised corrosion pitting may cause subsequent rail fracture. Avoid  Contact with injurious substances which cause high corrosion of steel , i.e. such as acids, alkalis, salts, fertilizers etc. DOs  Stack rails on well drained platform preferably of concrete base as per Drg. No. RDSO/T-6219
  • 19. Avoid  Overlapping of rail flanges  Crossing of layers when dunnage is used  Leaning stack by placing rail ends (rails of the same length) in vertical alignment.  Localised point or line contact loading in stacking  Criss-cross stacking of rails of alternative layers as at right angle as far as possible
  • 20. DOs Stack rails of same length [as far as possible] on firm level base of well drained platform providing uniform support, as per Drawing No. RDSO/T-6219.  Each stack of the rail should of the same section and class.  Successive layers may be of the same or decreasing width for stacking of unequal length of rails.
  • 21. Subsequent layers should be separated with uniformly placed suitable spacers or dunnage in vertical alignment with base supports. Place rails of shorter length in upper layers. Use of suitable rail handling equipment, such as electromagnetic lifting devices, rail grips etc.
  • 22.
  • 23. CE Circular No.-246 & 181 Para 254,255 & 310 of IRPWM Revised FBW Manual-2012 Technical Diary-2014 CT-35:RDSO Guidelines for Handling and Stacking of Rails