Deployment of C&W staff on Rajdhani/Shatabdi Express/Rajdhani type nominated trains/Other super fast and Mail/Express trains should be as per Railway Board's letter no. 99/TG.V/12/2 dated 13.9.99.

Every month, the carpet should be cleaned thoroughly by taking it out from compartment, and dry cleaned every three to four months if necessary.

Minimum infrastructure includes 110 V inspection lights along the side of the track for night examination of the under gear.

The minimum infrastructure to be provided at platforms is elaborated in CAMTECH's report CAMTECH/2009/M/C/terminal Attention/1.0 of March 2009.

Clear maintenance time of 6 hours on the pit as per train schedule is mandatory for round trip primary pattern of maintenance.

Use of fixed lights as indicated in Figure 2.6 is preferable for rolling in/out examination, properly focused by positioning a coach on the line.

When train locomotive has to be detached, ensure brakes are not released in at least 3 to 4 coaches from the locomotive end and 3 to 4 coaches from the rear end to prevent rolling.

No train should be allowed to leave with an inoperative/defective brake cylinder on any coach after pit attention. Trains attended on pit line should have 100% brake power.

Required tools include CO2 Welding plant along with multi-operator welding plants, gas cutting plants, and electrical/pneumatic angle grinders.

Components like sole bar and trough floor should be examined by tapping with a spiked hammer, and proper illumination is essential.

Root run is done with 3.15 mm diameter electrode with higher current for proper penetration, subsequent runs with 4 mm diameter electrode.

Preheat electrode to 250°C for 2 hours OR 350°C for 1 hour, or as recommended by electrode manufacturer.

If AC welding machine is used, it must have OCV minimum 70 Volt for proper arc stability and penetration.

Before welding, drill a hole of 7-10 mm diameter at about 15-20 mm away from the extremities of crack to prevent crack propagation.

Manual metal Arc welding electrodes used for repairs should be as per IRS: M-28-2020 version 1.0 dt 30.12.2020.

Corrosion repairs should be carried out following RDSO/2019/CG/CMI-01 guidelines (Appendix E) for detailed procedure.

At locations other than vulnerable areas, if corrosion noticed, side wall sheet should be cut to a height of 450 mm from the bottom with sufficient length for thorough examination.

If corrosion noticed at door corners, cut the side wall to a width of half meter (500 mm) from the door corner for thorough examination.

If heavy corrosion is noticed in lavatory area, the side wall should be cut to a height of 500 mm from the bottom covering sufficient length for examination.

The diameters of all the wheels measured before the assembly of the bogies must be available with the staff carrying out the height adjustment of CBCs.

Engineer (Permanent Way) should get track attended and leveled once every month and give certificate that nominated portion is perfectly level and straight.

For workshops, maximum height of CBC under tare condition is 1105 mm and minimum is 1090 mm, while production units have minimum 1095 mm.

Alternatively, four powered lifting jacks of 15 tonnes capacity each operated simultaneously by one control switch can be used.

Coach body should be lifted off the bogies either by two overhead electric cranes of 25 tonnes capacity each with suitably designed lifting tackles.

SS-III (Shop Schedule III) is due at 6 years OR 24 Lakh km earned, whichever is earlier.

SS-II (Shop Schedule II) is due at 3 years OR 12 Lakh km earned, whichever is earlier.

Steel body coaches have codal life of 25 years, while full Stainless Steel body coaches have 30 years - a difference of 5 years due to better corrosion resistance of stainless steel.

The service life of LHB Coach has been fixed as per Railway Board letter RBA No 25/2006 dated 25.05.2006.

Main cross members in underframe are 6 mm thick, while frame cross members are made of folded channel sections 140x50x4.

Sole bar sections vary by coach type: AC Chair car uses 238x65x6, AC Power car uses 238x65x8, and both types also use 238x65x4.

All items of end wall are manufactured from ferritic stainless steel of various thicknesses, except the console which is manufactured from 6 mm carton steel plate.

The side wall design eliminates the traditional turn-under profile that previously accumulated water and muck, thereby removing a primary source of corrosion.

Magnetic track welding technology is employed for the critical joint between side wall and underframe, followed by grinding to achieve smooth, flush surface.

Meta cot silver grey weldable primer is applied to prevent bimetallic corrosion at the junction of dissimilar materials before welding side wall to underframe.

Floor outside receives a thick coat of 100 microns sound insulation, providing protection from external noise sources.

Sound insulation thickness varies by location: floor near bogie areas inside receives 6-8 mm, while residual floor regions receive 2-3 mm.

Resonaflex Alu insulation has cubic weight of 28.0 kg/m³, with sheet dimensions of 1000×1000 mm and thickness from 20-100 mm in 5 mm steps.

Resonaflex Alu insulation has fire response conforming to B-1 of DIN 4102/5510 standards, ensuring fire safety compliance.

Ferritic stainless steel (X2CrNi12) used for side walls, end walls, and roof structure has yield stress of 320 N/mm² and UTS of 450-600 N/mm².

IRS M-41 Corten Steel has specific composition including Chromium 0.35-0.6%, Nickel 0.2-0.47%, and Copper 0.3-0.6%, which provides enhanced corrosion resistance and strength.