Indian Railway main logo
Search :
Increase Font size Normal Font Decrease Font size
   View Content in Hindi
National Emblem of India

About Us

Tenders & Suppliers Info

News & Recruitment

Public Information

Passenger Information

Contact Us



 
Bookmark Mail this page Print this page
QUICK LINKS

Performance of AC-DC (SIEMENS) EMU: 

Sr.

No.

Description

Average Holding in

2009-10

2009-10 (Upto Dec-09)

Perform-ance per rake

Average Holding in

2010-11

2010-11 (Upto Dec-10)

Perform-ance per rake

1

Unit Failures

26

14

 

42

13

 

2

Unit Defect

28

38

3

Unit Shortage

3

3

UF+UD+US = TOTAL

45

1.3

54

1

4

Punctuality loss

385

11.1

409

7.3

5

Cancellation

47

1.4

25

0.4

Performance of AC-DC (BHEL) EMU: 

Sr.

No.

Description

Average Holding in

2009-10

2009-10 (Upto Dec-09)

Perform-ance per rake

Average Holding in

2010-11

2010-11 (Upto Dec-10)

Perform-ance per rake

1

Unit Failures

10

10

 

10

8

 

2

Unit Defect

35

6

3

Unit Shortage

4

4

UF+UD+US = TOTAL

49

4.9

18

1.4

4

Punctuality loss

222

22.2

107

8.0

5

Cancellation

24

2.4

28

2.1

Performance of DC EMU: 

Sr.

No.

Description

2009-10
(Upto Dec-09)

2010-11
(Upto Dec-10)

% Improvement w.r.t. last year

1

Unit Failures

21

27

-28.6

2

Unit Defect

46

42

8.7

3

Unit Shortage

5

6

-20.0

UF+UD+US = TOTAL

72

75

-4.2

4

Punctuality loss

361

597

-65.4

5

Cancellation

68

193

-183.8


RAKE HOLDING AND UTILIZATION

 

Holding

Utilization

9-Car rakes

63

55

12-Car rakes

76

67

Total

139

122

SHEDWISERAKE HOLDING

Sheds

Stock

9-Car

12-Car

Kurla Carshed

DC

12

2

AC-DC (Siemens)

0

44

Kalva Carshed

DC

11

20

AC-DC (BHEL)

0

10

Sanpada Carshed

DC

44

0

Total

67

76

System improvement:

i. Rolling-in-Examination: Carried out at Thane and Kalyan depots to detect any irregularities in under gear while the rake rolls in to the platform.

ii. Night Examination: There are 18 night stabling depots where night examination is carried out daily on stabled rakes. These are CSTM, Kurla, Bandra, Belapur, Panvel, Vashi, Thane, Thakurli, Kalyan, Ambernath, Titwala, Karjat, Kasara, Kurla Carshed, Kalva Carshed, Sanpada Carshed, Lonvala and Pune. Major safety items including under gear of rakes is checked.

iii. Trip Inspection: Carried out at Kurla, Kalva and Sanpada carsheds at an interval of 10 days during night time. Attention to brake gear & passenger amenity items is given during this schedule. Headlight focusing is also checked.

iv. IA Inspection Schedule: Carried out at Kurla, Kalva and Sanpada carsheds at an interval of 21 days (DC) & 45 days (AC-DC) to check and attend all electrical and mechanical items. Passenger amenity items are also checked and attended in this schedule.

v. Quarterly Inspection: Carried out at Kurla, Kalva and Sanpada carsheds at an interval of 4 months (DC) & 6 months (AC-DC) to check and attend battery, LT jumpers, couplers, suspension brass clearance.

vi. overhauling of following major equipment: Traction motors, Motor Generator set, Compressors, Brake Equipment, Pantograph, Control Equipments, Auxiliary Warning System, Passenger Address System. Kurla Carshed is supplying overhauled MG sets, Compressor, AWS equipments to Kalva and Sanpada carsheds for running repairs.

vii. Washing of the rakes:- Washing schedule is done at an interval of 10 to 15 days. During this schedule rakes are washed thoroughly from inside and outside of the coach. Disinfectants are sprayed in coaches. In addition to this un-authorized posters are removed.

viii.CB schedule: This schedule is carried out at an interval of 45 days. During this schedule all fans blades and guards are cleaned thoroughly by air blowing. All CBs are changed. Defective fans switches are replaced. Minor attention to wiring is given on condition basis.

ix. TM Commutator Cleaning: This schedule is carried out at Kurla carshed since it is holding 133 AY Traction Motor rakes which are of very old design and hence prone to traction motor failures and subsequent punctuality losses. This schedule is carried out at an interval of 60 days.

x. Nine monthly lifting of coaches: Motor coaches and trailer coaches are lifted on 9 monthly basis to check center pivot assembly, attention of guide bushes and bogie clearances.

xi. POH Schedule: POH Inspection is carried out at Matunga workshop at an interval of 18 months. Rehabilitation / Rewiring of the coaches are also carried out there after an interval of 13-15 years of coach commissioning. End life rehabilitation is done after 25 years of coach life.

MODIFICATIONS ON EMU RAKES:

i) Railway Board vide letter No. 2006/Elect(G)/181/3/AC-DC EMU dated 22.07.2010 approved retrofitment of 10 nos. existing DC EMUs coaches with AC equipment. One unit has been taken for proto-type. Control circuit and power circuit has been developed by Carshed, Kurla. Roof dishing and AC roof equipment fitment done. Transformer, Rectifier, HSCB fitment done and MG relocated. Unit tested in AC OHE and DC OHE and performance found satisfactory.

ii) 1 No. 9-Car DC rake Ladies Special converted to 12-Car DC rake on Main Line.

iii) Matribhoomi (Ladies special) train introduced First time in Thane-Vashi & Thane-Panvel section during morning & evening peak hours from 29.05.2010.

iv) New time table No.82-HB (Revised) introduced in Harbour & Trans-Harbour section from 29.05.2010. In Trans-Harbour section 44 train services and in Harbour section 18 train services are increased. With the increase in service the total 774 services run in Trans-Harbour & Harbour section.

v) On dated 07.12.10, Six 12 car rake introduced in Trans-Harbour section resulting 80 services with 12 car instead of 9 car.

vi) There had been cases of puncturing of lightening arrestor at DC-AC neutral section due to malfunctioning of APC (Automatic Phase control receiver). This was happening due to EMI caused by Traction return current. Kurla carshed has relocated APC magnet on all AC-DC rakes and failures have come down to zero.

vi) To avoid detention of rake due to uncoupling of MR/BP stainless steel pipe, clamping of pipes is being carried out by Kurla carshed. Total 435 Coaches completed out of 528 coaches so far.


vii) For easy operation of AWS and to avoid detention of rake due to pressure dropping, ISU of AWS system is being shifted and brought in front of Motorman. Total 82 Coaches completed out of 88 coaches so far.

viii) AWS isolation indication system at the exterior portion of D’Cab has been provided in all DC EMUs.

ix) Paralleling of Important Interlocks in AC-DC Siemens rake. The work has been completed in all rakes.

x) There had been 2 cases of breakage of three piece palm rod provided on AC-DC (Siemens) EMU. This is a safety hazard as broken palm rod may entangle with points/crossings. Single piece palm rods have been provided on all AC-DC (Siemens) EMU to avoid such incidences.

xi) There had been 23 cases of AC-DC (Siemens) EMU traction motor impeller breakage. 239 Traction motors out of 704 have been replaced so far.

xii) There had been large number of cases of side bearer crack on AC-DC (Siemens) EMU. Kurla carshed has modified all coaches as per ICF drawing. There are NIL cases after modification.

xiii) There had been cases of burning of BHEL type MG/Compressor contactor due to defective design of Arc quenching. All DC EMU rakes have been provided with TDK design MG/Compressor contactor which are superior in performance.




Source : Central Railway / Indian Railways Portal CMS Team Last Reviewed on: 01-03-2011  


  Admin Login | Site Map | Contact Us | RTI | Disclaimer | Terms & Conditions | Privacy Policy Valid CSS! Valid XHTML 1.0 Strict

© 2016  All Rights Reserved.

This is the Portal of Indian Railways, developed with an objective to enable a single window access to information and services being provided by the various Indian Railways entities. The content in this Portal is the result of a collaborative effort of various Indian Railways Entities and Departments Maintained by CRIS, Ministry of Railways, Government of India.