Mainenace Guidelines for LHB Cocahes.
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SOUTH EASTERN RAILWAY No: M2/ Date: May 26, 2014 ARM/SRC Sub: Maintenance guidelines for LHB design coaching stock Maintenance instructions for LHB coaches have been detailed in CAMTECH maintenance manual for LHB coaches issued in Apr’13 and respective OEMs manual. In addition, RDSO, CAMTECH and Railway Board have issued guidelines for LHB coach maintenance. Taking into account the relevant instructions, the following guidelines are reiterated for compliance by all concerned: 1. Periodicity of maintenance schedules Schedule Periodicity Trip Schedule D1 Every Trip/Weekly Monthly Schedule/D2 30 days + 3 days Six monthly Schedule/D3 180 days + 15 days (Shop Schedule I) /SS-I 18 Month + 30 days / 6 Lakhs Kms earned whichever is earlier Shop Schedule II/SS-II 3 years / 12 Lakhs Kms earned whichever is earlier. Shop Schedule III/SS-III 6 years/24 Lakhs Kms earned whichever is earlier. 2. Material of construction: The LHB coach is of integral light weight construction, consisting of separate assembly group for under frame, side walls, and roof and end walls. The individual assemblies are joined to each other by welding. Three types of steel are used for manufacture of body shell. Only recommended electrodes (Class D2 or equivalent) should be used for minor repair if required. Shell Assemblies Stel used and their % age compositions UTS N/mm2 Yield Stress N/mm2 Side wall, End wall and Roof structure X2Cmi12 Ferritic steel (SS 409M) (C</= 03% Cr 105-12.5%, Si 1%, Mn0. 5-1.5% 450- 600 320 Roof sheet and Trough floor X2C Nil 810 Austenitic steel (SS 304) (C</= 0.07% Cr 17-19%, Si 1% max Mn 2.0% max) 550- 750 235 Under frame IRS M-41/Corten steel (C 0.01% max, Cr 0.35-0.6%, Ni 0.2-0.47% Cu 0.3-0.6% Si 0.28- 0.72% Mn0.25 to 0.45% 440- 480 320
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Transcript of Mainenace Guidelines for LHB Cocahes.
SOUTH EASTERN RAILWAY
No:M2/
Date: May 26, 2014ARM/SRC
Sub: Maintenance guidelines for LHB design coaching stockMaintenance instructions for LHB coaches have been detailed in CAMTECH maintenance manual for LHB coaches issued in Apr13 and respective OEMs manual. In addition, RDSO, CAMTECH and Railway Board have issued guidelines for LHB coach maintenance. Taking into account the relevant instructions, the following guidelines are reiterated for compliance by all concerned:
1. Periodicity of maintenance schedulesSchedulePeriodicity
Trip Schedule D1Every Trip/Weekly
Monthly Schedule/D230 days + 3 days
Six monthly Schedule/D3180 days + 15 days
(Shop Schedule I) /SS-I18 Month + 30 days / 6 Lakhs Kms earned whichever is earlier
Shop Schedule II/SS-II3 years / 12 Lakhs Kms earned whichever is earlier.
Shop Schedule III/SS-III6 years/24 Lakhs Kms earned whichever is earlier.
2. Material of construction: The LHB coach is of integral light weight construction, consisting of separate assembly group for under frame, side walls, and roof and end walls. The individual assemblies are joined to each other by welding. Three types of steel are used for manufacture of body shell. Only recommended electrodes (Class D2 or equivalent) should be used for minor repair if required. Shell AssembliesStel used and their % age compositionsUTS N/mm2Yield Stress N/mm2
Side wall, End wall and Roof structureX2Cmi12 Ferritic steel (SS 409M)
(C
