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Tank Car Specialist Training Support Package November 2014 Module 6: Pressure Tank Cars Training Support Package.

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Presentation on theme: "Tank Car Specialist Training Support Package November 2014 Module 6: Pressure Tank Cars Training Support Package."— Presentation transcript:

1 Tank Car Specialist Training Support Package November 2014 Module 6: Pressure Tank Cars Training Support Package

2 Tank Car Specialist Introduction Pressure tank cars are those with a tank test pressure between 100 and 600 psi that are used for transportation of liquefied compressed gases and liquid hazardous material (HazMat). Upper tank fittings are enclosed in a protective housing. Pressure tank cars do not normally have bottom fittings.

3 Tank Car Specialist Enabling Learning Objectives 6-1 Identify the components that are normally found on a pressure tank car for loading and unloading, determining capacity, pressure relief, and security measures. 6-2 Identify the location, function, and arrangement of the following as commonly found on a pressure tank car: Liquid Valves Vapor Valves PRD-Pressure Relief Devices Sample Ports Gauging Devices Thermometer Wells Vacuum Relief Devices

4 Tank Car Specialist Enabling Learning Objectives 6-3Demonstrate the proper use of the following devices in controlling a release, determining the conditions within the tank car, and determining the capacity of a pressure tank car while participating in a realistic scenario-based derailment: Liquid Valves Vapor Valves PRD-Pressure Relief Devices Sample Ports Gauging Devices Thermometer Wells Vacuum Relief Devices

5 Tank Car Specialist DOT-105J400W

6 Tank Car Specialist DOT-112J340W

7 Tank Car Specialist Pressure Tank Car Protective housing Valve access ports No other visible devices

8 Tank Car Specialist SAFETY FEATURES Feature and Class Double Shelf Couplers Head Shields Spray–on Thermal Protection Jacket Thermal Protection Jacket Insulation 105 AXX 105 SXXX 105 JXXXX 112 AX 112 SXX 112 TXXX 112 JXXX Tank cars containing Flammable compressed gases must be either a T or J specification. Also, all openings into the tank must be equipped with excess flow check valve (excluding the pressure relief device and thermometer well ).

9 Tank Car Specialist DOT 105 A Insulated Jacket

10 Tank Car Specialist DOT 105 J 500 W

11 Tank Car Specialist Thermal Protection 105 J 11 Jacketed insulated thermal protection Jacket Insulation- 5” Tank material

12 Tank Car Specialist DOT 105 S 300 W

13 Tank Car Specialist Thermal Protection 112 “J” 13 Jacketed thermal protection Jacket Insulation- 1” to 2” Tank material

14 Tank Car Specialist DOT 112 J 340 W

15 Tank Car Specialist DOT 112 T 400 W

16 Tank Car Specialist Test Pressure Range 100 to 600 psi

17 Tank Car Specialist Capacity Range 4,000 to 45,000 gallons 49 CFR – (built after 11/30/1970) Cannot exceed 34,500 gal or gross rail weight 263,000 lb AAR Standards - between 263,000 and 286,000 lbs but no increase in commodity Built prior to 7/01/1974 and 40 yrs service – eligible for 50 yrs with AAR compliance

18 Tank Car Specialist Valves 18 Angle Valve Pressure Relief Valve

19 Tank Car Specialist Excess Flow Valve

20 Tank Car Specialist Pressure Car Valves Pressure Relief Device PRD- Pressure Relief Device Normally set at 75% of test pressure

21 Tank Car Specialist Midland Internal Safety Relief Valve

22 Tank Car Specialist DOT 112 J 340 W 340 Tank Test Pressure Safety Relief Valve or 82.5% of Tank Test Pressure

23 Tank Car Specialist Slip Tube Gauging Device

24 Tank Car Specialist Slip Tube Gauging Device

25 Tank Car Specialist Slip Tube Gauging Device

26 Tank Car Specialist Slip Tube Gauging Device Quick Release Cover OPERATING INSTRUCTIONS Step 1Grip handles and remove housing. Step 2Move packing nut lever in a counterclockwise direction. Step 3Press rod latch and pull gauge rod upward until it is above the liquid. Step 4Open the control valve counterclockwise, keep turning until vapor flows from valve orifice. Step 5Push gauge rod down slowly until flow changes to liquid. Step 6Fish gauge by moving it upward and downward several times over short distances above and below the liquid level until liquid level is determined by the vapor-liquid flow. Step 7Close the valve clockwise. Set only finger tight. Do not use wrench. Step 8Read graduations at top of pointer. Step 9Press rod latch and push gauge rod completely down. Step 10Tighten packing nut lever clockwise (reverse of Step 2).

27 Tank Car Specialist Magnetic Gauging Device 27 Magnetic or closed type gauging devices

28 Tank Car Specialist Gauging Device

29 Tank Car Specialist Sample Valve Can be used to take a sample of product Can be used to check pressure in tank car

30 Tank Car Specialist Thermometer Well 30 Using a thermometer to insert into the well to check the temperature of the lading

31 Tank Car Specialist Pressure Car Valves

32 Tank Car Specialist Pressure Car Valves

33 Tank Car Specialist Pressure Car Valves

34 Tank Car Specialist Pressure Tank Car Common Leaks Leak SourceCorrective ActionTools Required Gauging device packingTighten packing gland nutLarge adjustable wrench Pipe wrench Gauging device angle valve Close angle valve and insert outlet plug Small adjustable wrench Liquid/vapor angle valveClose valve and insert outlet plug Large adjustable wrench Pipe wrench Angle valve packingClose valve or tighten pack gland nuts Small adjustable wrench, Allen wrench Angle valve gasketTighten stud nutsLarge socket wrench Sample valve seatClose valve and insert outlet plug Small adjustable wrench Thermometer wellTighten capLarge adjustable wrench Relief valve sealsReplace “O” rings or rubber washers Advanced training

35 Tank Car Specialist DOT 105 A 500 W

36 Tank Car Specialist DOT 105 J 500 W

37 Tank Car Specialist Chlorine Loading and Unloading Arrangement

38 Tank Car Specialist New Chlorine Loading and Unloading Arrangement

39 Tank Car Specialist External Relief Valve Crosby Midland

40 Tank Car Specialist Chlorine Excess Flow Valve Transquip USA A7837A Valve

41 Tank Car Specialist Chlorine C Kit

42 Tank Car Specialist Chlorine Common Leaks Leak SourceCorrective ActionTools Required Angle valve packingClose valve or tighten packing gland nuts or apply C Kit Small adjustable wrench (11/16”) Chlorine C Kit Angle valve seatApply valve outlet plugs or apply C Kit Large adjustable wrench (31/32”) Chlorine C Kit Angle valve gasketTighten stud nuts or apply C Kit. Apply C Kit Crowsfoot wrench ( 1 ¼”) Chlorine C Kit Safety relief valveTighten stud nuts or apply C Kit Chlorine C Kit Check Pressure in car Safety relief valve GasketApply C KitCrowsfoot wrench ( 1 ¼”) Chlorine C kit Manway cover gasketTighten stud nuts or apply C Kit Socket wrench ( 1 13/16”)

43 Tank Car Specialist CO 2 HOUSING

44 Tank Car Specialist Regularly Vents CO 2

45 Tank Car Specialist DOT 113

46 Tank Car Specialist DOT 113

47 Tank Car Specialist LNG Tender

48 Tank Car Specialist LNG Tender

49 Tank Car Specialist LNG Tender

50 Tank Car Specialist Conclusion 6-1 Identify the components that are normally found on a pressure tank car for loading and unloading, determining capacity, pressure relief, and security measures. 6-2 Identify the location, function, and arrangement of the following as commonly found on a pressure tank car: Liquid Valves Vapor Valves PRD-Pressure Relief Devices Sample Ports Gauging Devices Thermometer Wells Vacuum Relief Devices

51 Tank Car Specialist Conclusion 6-3Demonstrate the proper use of the following devices in controlling a release, determining the conditions within the tank car, and determining the capacity of a pressure tank car while participating in a realistic scenario-based derailment: Liquid Valves Vapor Valves PRD-Pressure Relief Devices Sample Ports Gauging Devices Thermometer Wells Vacuum Relief Devices


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