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Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

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Page#    1714 FAQs  next>>
Aug 02 (10:50)

Entry# 2363     
About Automatic Coach Washing Plant (ACWP) & Coach cleaning process by using ACWP in Different stages.

★  General Travel
Jul 24 (21:35)
Blog Post# 5423695-0     
Indrakeeladri_Express^~   Added by: Indrakeeladri_Express^~  Aug 02 (10:50)

Automatic Coach Washing Plant (ACWP) is used for exterior, roof & under carriage cleaning with high pressure cleaning jets and with vertical and horizontal rotating brushing unit.


Need & Purpose for installation of Automatic Coach Washing Plant:

• Washing & Cleaning of coaches is one of the though & critical jobs to be carried during train examination.
• The rakes of these trains are examined & maintained at C&W Depot.
• During examination of these rakes, internal & external cleaning & washing of coaches is being carried out.
• It is observed & studied that oily & sticky smoke emitted by Diesel Locos especially in tunnels result in sticky soot and stains being formed on the coaches thus resulting in a real problem of cleanliness of the
coaches and this has attracted public criticism also.
• As the staff is limited, the desired level of cleanliness cannot be done satisfactorily by conventional method within limited time period.
• To overcome the above problem of coach cleanliness, a method of external cleaning of coaches by high-pressure water jet pump was adopted.
• Eight powered nylon brushes were provided in this washing plant for the purpose of rubbing of soap solution & cleaning of dirt on external surface of coaches.
• In addition to horizontal nylon brushes, 2 Coir brush fixtures were developed and fitted in plant.
• These coir brushes were static (non-rotating type) and fixed in one position for the purpose of even application & rubbing of soap solution on surface of coach, thereby sticky particles of soot and dirt get loosened and removed. But this coir brush could not touch and clean the area near window-sills, upper and lower portions of coach since upper portion of coir brush was obstructed by coach indication lamp,
indication board, destination board and lower curved portion (turn under) of coach due to less stiffness of coir brush.
• Hence these portions were used to be cleaned manually by available staff.

Developing of Automatic Coach Washing Plant with the keeping in the view of:

1. Less & economical maintenance of the modified washing plant.
2. Less manpower requirement for operation and maintenance this plant.
3. 95% exterior cleaning of a entire rake of 24 coaches is to be achieved
within 35-40 minutes.
4. Reduction in water and soap solution consumption compared to the
conventional Manual coach cleaning.
5. Reduction in power consumption by using automation.
6. Cleaning and disinfection of underneath portion of toilet by High
pressure jets.
7. Bogie side cleaning by high pressure jets.
8. Roof cleaning of Coach by horizontal nylon brush.

Location of ACWP:

Automatic Coach Washing Plants are installed at Starting of Pit Lines in Coaching Depots or Yard.

Process Of Coach Cleaning & Washing in Different

STAGE-1: Pre-Wash:
▪︎ A rake is moving at speed of 5 KMPH during cleaning & washing of coaches through this plant.
▪︎ In this stage a diffuser type sensor is provided for sensing coaches of a rake.
▪︎ As soon as this sensor senses first coach of a rake, water starts spraying on external surface of coach through number of holes provided on water pipelines erected around in a row.
▪︎ Two sides & roof of coaches are completely wetted by low velocity sprinklers at this stage, some loose dust & dirt is washed away from coach surface and simultaneously, coach surface is made uniformly wet, which help in even application of soap
solution on coach body.

STAGE-2: Spraying of Soap Solution:
▪︎ In this stage, diluted soap solution is sprayed on coach surfaces including two sides and roof through
seven sprinklers.
▪︎ Provision is made for mixing of compressed air with
pressurized soap solution inside the sprinklers to get more bubbles formed
when it strikes with coach surface.
▪︎ Due to release of surface tension in
bubbles, dirt particles are loosened
and washed away easily.
▪︎ Flow &
quantity of soap solution can be
controlled and adjusted by operating
spindle nut on sprinkler and both
valves provided on soap solution
line and pneumatic line.

STAGE-3: Rubbing of Soap Solution:
▪︎ This stage is especially incorporated to get more effective cleaning.
▪︎ In this stage, soap solution is rubbed and made even
application on both sides of coach by two vertical nylon brushes one at each side of coach.
▪︎ This stage comes into action as soon as sensor at second stage is activated.

STAGE-4: Soaking of Soap Solution:
▪︎ In this stage, soap solution is allowed to soak completely for approx.1 minute in normal washing process.
▪︎ This stage is automatically achieved while rake is moving at 5 Km/h. through coach washing plant, since stage 3 and stage 5 is kept apart at 30 meter distance.
▪︎ During this stage, soap solution, is chemically reacted with dirt.

STAGE-5: Cleaning of Underneath Portion of Toilet:
▪︎ In this stage, two sensors are provided for ascertaining the location of underneath toilet portion between two adjacent coaches by sensing of last wheel of first coach and first wheel of second
▪︎ As soon as these sensors are activated in above situation, pressurized water mixed with disinfectant and phenol, sprayed frombottom through four nozzles which are provided between two rails.
▪︎ This pressurized spray clean underneath portion of toilet and near by area which is normally spoiled with wet soil.
▪︎ This process is also helping in prevention of breeding of cockroaches which generally take place in this area.
▪︎ Further, it also helps in maintaining hygienic conditions for working staff, who specially work or attend safety fittings in this portion of a coach.
▪︎ In this stage, sides of bogie are also cleaned by high pressure water jets simultaneously.

STAGE-6: Moistening of Soap Solution:
▪︎ In this stage, moistening of
partially dried soap solution is carried out by sprinkling of very low-
pressure water through number of nozzles provided on a water pipe line.
▪︎ Hence soap solution applied on roof and sides of coach become wet before
rubbing by horizontal and vertical brushes.

STAGE-7: Coach Cleaning by Horizontal & Vertical Brushes:
▪︎ When coach is moving through this stage, first rubbing of soap solution takesplace at roof portion by horizontal nylon brush mounted on top of the IVth
▪︎ After this stage, Coach is moving further through 4 sets of vertical cotton brush units (2 Nos on each
▪︎ These brushes are moving at the speed of 150 rpm.
▪︎ Due to centrifugal force, end of each thread of
cotton brushes start rubbing soap solution on coach surface with smooth impact effect thereby whatever
remaining soot and dirt available on surfaces are taken away completely.
▪︎ Cotton thread has good capillary property thus it hold soap solution continuously for longer time.
▪︎ These cotton treads have good flexibility and get required length automatically according to shape of surface of coach so that only tip of threads get touched with coach surface.
▪︎ Cleaning by this method has shown significant effect.
▪︎ These cotton threads are specially given stiffness by fastening with nylon bristles to prevent mingling of cotton threads.
▪︎ Therefore, tips of brushes are reaching, touching and doing cleaning at intricate places on coach body like
window, window sill, window shutter, doors , space near door including door handle, space near to destination board, turn under and roof portion.
▪︎ Earlier, these area could not be possible to clean by old coach washing plant.
▪︎ These brushes are also helping in removing of
reservation chart pasted on a coach.

STAGE-8: After Wash:
▪︎ In this stage, washing of roof and sides of coaches are carried out after rubbing of soap solution by vertical and horizontal brushes.
▪︎ High-pressure water is sprayed on coach surface through eight high-pressure sprinklers to wash coach
▪︎ In this stage, washing of roof takes place just before
washing of sides by spraying of water through high velocity sprinklers provided at top of structure.
▪︎ This arrangement is made purposely to allow dirty
water after roof washing to flow down on both sides of coaches before washing of sides of coaches.

STAGE-9: Mopping of Water:
▪︎ After wash, coach body become completely wet hence it require mopping.
▪︎ Two vertical brushes with soft cotton threads are provided each on either side.
▪︎ These brushes start mopping of water particles on sides of coaches as soon as coaches pass through these brushes.
▪︎ This stage is specially effective for cleaning of AC glass windows where small water drops are always sticking and staining glass giving discomfort to passengers when they are looking outside through such windows.
▪︎ These brushes are also used for buffing of coaches to get shining by rotating it in dried condition when rake is moved from pit-line after examination.
▪︎ Since, requirement of soap solution is less for
external cleaning of rake by this washing plant.
▪︎ Cost incurred in normal external cleaning of a rake of 21 coaches is Rs.400 approximately. This cost includes cost of material like soap solution and
cotton ropes (which are normally replaced once in a month) and cost of electrical power.

The cost for installation of Automatic Coach Washing Plant is 4 cr.

Source: Some information gather from RDSO.

Pic Source: Khagaria Jn. & Google
Member: /u/1872250
Jul 26 (22:37)

Entry# 2362     
FM Term Over
List of EMU Car Sheds in Indian Railways

Jul 26 (21:41)
Blog Post# 5425174-6     
Indrakeeladri_Express^~   Added by: FM Term Over  Jul 26 (22:37)
List of EMU Car Sheds in Indian Railways:

For New Delhi & Old Delhi:
1. Ghaziabad EMU Car Shed - 4 Pit lines (Each 16 Coaches Capacity)
Note: Extension of 16 Coaches Capacity to
20 Coaches Capacity is under process.

For Mumbai CST & Mumbai Central:
1. Kurla EMU Car shed - 11 Pit lines (4-15 Coaches, 7-12 Coaches)
2. Kalva EMU Car shed - 12 Pit lines (each 12 coaches capacity)
Note: Kalva EMU shed can maintains both MEMU & EMU trains
3. Sanpada EMU car shed - 9 Pit lines (each 12 coaches capacity)
4. Mumbai Central EMU Car shed - 13 Pit lines
5. Kandvli EMU Car shed - 5 Pit lines
6. Virar EMU Car Shed - 12 Pit lines

For Kolkata & Howrah:
1. Narkeldanga EMU Car shed - 4 Pit lines (1-12 Coaches, 3-09 Coaches)
2, Barasat EMU car shed - 5 Pit lines (4-12 coaches, 1-09 coaches)
3. Ranaghat EMU & MEMU car shed - 4 Pit lines (2-15 coaches, 2-12 coaches)
4. Sonarpur EMU car shed - 4 Pit lines (each 12 coaches capacity)
5. Howrah EMU Car Shed - 10 Pit lines (Each 12 coaches capacity)
6. Bandel EMU car shed - 4 Pit lines (Each 12 coaches capacity)
7. Panskura EMU Car Shed - 2 Pit lines (Each 12 Coaches Capacity)

For Chennai:
1. Avadi EMU car shed - 4 Pit lines (2-12 coaches, 2-9 coaches)
2. Tambaram EMU car shed - 6 Pit lines (4-12 coaches, 2-8 coaches)
3. Velachery EMU car shed - 2 Pit lines (each 9 coaches)

For Hyderabad:
1. Moula Ali EMU car shed - 3 Pit lines (each 12 coaches capacity)

For Pune:
1. New Washing Siding Pune - 1 Pit line (12 Coaches Capacity)
Jul 26 (22:36)

Entry# 2361     
FM Term Over
List of DEMU Car Sheds in Indian Railways

Jul 26 (21:03)
Blog Post# 5425174-5     
Indrakeeladri_Express^~   Added by: FM Term Over  Jul 26 (22:36)
List of DEMU Car Sheds in Indian Railways:

1. Agra DEMU Shed - 1 Pit line (8 Coaches)
2. Bengaluru Cantt. DEMU Shed - 1 Pit line (8 Coaches)
3. SahibGanj DEMU Shed -
1 Pit line (12 Coaches)
4. Aunrihar DEMU Shed - 1 Pit line (16 Coaches)
5. Gondia DEMU Shed - 3 Pit lines (1-12, 2-8 Coaches)
6. ClutterbuckGanj (Bareilly) DEMU Shed - 2 Pit lines (Each 12 Coaches Capacity)
7. Sabarmati DEMU Shed - 2 Pit lines (Each 27 Coaches Capacity)
8. Tiruchchirappalli DEMU Shed - 1 Pit line (8 Coaches)
9. Lumding DEMU Shed - 1 Pit line (10 Coaches)
10. Siliguri DEMU Shed - 2 Pit lines (1-10, 1-8 Coaches)
11. Tinsukia DEMU Shed - 1 Pit line (6 Coaches)
12. Ratlam DEMU Shed - 1 Pit line
13. Bandamunda DEMU Shed - 1 Pit line
14. *Pandu (Kamakhya) DEMU Shed (Under Construction)
15. *Agartala DEMU Shed (Proposed)
16. Merta Road DEMU Shed - 2 Pit lines
17. Jamalpur DEMU Workshop - 1 Pit line (DEMU Shed was permanently closed)
18. Andal DEMU Shed - 1 Pit line
19. *Sonpur DEMU Shed - 1 Pit line (8 Coaches)
Note: Extension 8 Coaches Pit to 12 Coaches
20. Badgam DEMU Shed - 2 Pit lines
21. Jalandhar DEMU Shed - 2 Pit lines
22. Shakurbasti DEMU Shed - 2 Pit lines
23. Moula Ali DLS - 2 Pit lines (Each 8 Coaches Capacity)
24. *Vijayawada DLS - 2 Pit lines (1-10, 1-9 Coaches Capacity)
Note: Extension of 2 Pit lines to 16 Coaches Capacity are under Proposal.
Jul 26 (22:36)

Entry# 2360     
FM Term Over
List of MEMU Car Sheds in Indian Railways:

Jul 26 (20:26)
Blog Post# 5425174-4     
Indrakeeladri_Express^~   Added by: FM Term Over  Jul 26 (22:36)
List of MEMU Car Sheds in Indian Railways:

1. Asansol MEMU Car Shed - 2 Pit lines (1-13, 1-12) + 2 Pit lines (Each 12 Coaches) (Under Construction)
2. Banaswadi MEMU Car Shed - 2 Pit lines (Each 12 Coaches Capacity)
Bhilai MEMU Car Shed - 4 Pit lines (3-12, 1-8)
4. Gaya MEMU Car Shed - 1 Pit line (20 Coaches Capacity)
5. Jhajha MEMU Car Shed - 2 Pit lines (Each 16 Coaches Capacity)
6. Kanpur MEMU Car Shed - 2 Pit lines
7. Khurda Road MEMU Car Shed - 2 Pit lines
8. Kharagpur MEMU Car Shed - 2 Pit lines (Each 12 Coaches Capacity)
9. Kollam MEMU Car Shed - 2 Pit lines (Each 8 Coaches Capacity)
10. Palakkad MEMU Car Shed - 1 Pit (8 Coaches Capacity)
11. Rajahmundry MEMU Car Shed - 2 Pit lines (1-16, 1-12)
12. Saharanpur MEMU Car Shed - 2 Pit lines (Each 12 Coaches Capacity)
13. Vadodara MEMU Car Shed - 1 Pit line
14. Anara MEMU Car Shed (Under Construction)
15. Bina MEMU Car Shed (Under Construction)
Jul 24 (18:27)

Entry# 2359     
FM Term Over
Details of Pit lines and washing lines

Jul 24 (16:15)
Blog Post# 44262-15     
Indrakeeladri_Express^~   Added by: FM Term Over  Jul 24 (18:27)
1. Pit Lines are the lines with Open dumping Concrete Pit/Bay at base, throughout the track.
2. It is used for all type of cleaning and maintenance to make the compartment, for next journey.
3. These pit lines are utilized to drain out sewage water (Washroom & Coach Interior Cleaning) and thorough Checking & Repairing Coach Base parts.
Every train is required to be cleaned prior to start
its next journey.
5. Some Pit lines have concrete catwalk. These catwalk helps in re examined before the complete Maintenance of the trains.
6. Types/Design in Pit lines:
a) Integrated Pit lines (These Pit lines are coved by roofs/shed)
b) CAMTECH Pit lines
c) Conventional Pit lines
d) Pit lines based RDSO drawing
e) Deep Pit lines
f) Non-Standard Deep Pit lines
g) BARAUNI Type Pit lines
7. Measurements:
Length of each Pit line/Concrete Bay is between 130 m to 780m
Width of each Pit line/concrete Bay is 14.49m

1. Washing are used to clean the interior & exterior surface of a rail coach.
2. These Washing are installed with a high pressure water hydrants.
3. Now a days these washing lines are replacing with a Automatic Coach Washing Plants (ACWP).

Difference between Pit Lines & Washing Lines:
Pit lines have Concrete Bay along with Water hydrants/water jets. Pit lines are capable for complete maintenance of a train.

Washing lines doesn't have any concrete bays only water hydrants or jets are present. These lines are not capable for complete Maintenance of a train.

Process for Primary Maintenance (PM) & Secondary Maintenance (SM) of a train:

Time required for complete PM & SM of a train = 8hrs (2hrs for rake movement from Station to Yard/Coaching Depot before Maintenance & after Maintenance & 6hrs for cleaning, safety examine, check air brake system, changing defect wheels etc)

After completion of complete train journey, the rake is sent to Coaching Depot/Yard.
The rake is placed on the Concrete Bay/Pit.
With the help of High pressure water hydrants or jets the interior & exterior surfaces of the Rail Coaches are washed.
After completion of cleaning, the rake is examine for any wheel defects. The defected wheels can be replacement with other wheels.
Here the safety examine takes place such as checking air brake system, lightening system of the Coaches.
After safety examination, the rake sent to sunting neck, here the machinery parts of a rakes/Coaches can be examined.
After complete Maintenance, the rake sent to stabling lines or station for next complete journey.

The PM & SM can be done to the trains after travelling 3500kms to ICF Coaches & 4000kms to LHB Coaches trains.

Stabling lines are parking lines used for holding of rakes for longer period.
Stabling lines are 2 types. Coach stablings lines & Wagon/Goods stabling lines.

Other end Maintenence (OEM):
The time allot of OEM of a train is 3hrs. The process includes in OEM of a train is just cleaning washrooms, outside surfaces of a coaches, draining out sewage water & checking the air brake system of a train.
This OEM can be done by using Washing lines or Platforms washing aprons.
Page#    1714 FAQs  next>>

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