Tank Cars 101 For Model Railroaders

1y ago
27 Views
1 Downloads
773.59 KB
9 Pages
Last View : Today
Last Download : 9m ago
Upload by : Azalea Piercy
Transcription

Tank Cars 101 for Model RailroadersText and Photos by Rich Mahaney, Superintendent EIDRecently I did a clinic for the Eastern Iowa Division on this topic. Let me share someinformation with those of you who could not attend.Those of us who teach tank car training to emergency responders and others group ordivide tank cars into three families for presentations. They are: general service or lowpressure tank cars, high pressure tank cars and cryogenic tank cars.General Service or Low Pressure Tank Cars are estimated to be about 78% of the tankcar fleet in North America. They operate with a pressure range of 0 to 100psi.They have capacities that range from 4,000 to 45,000 gallons. They come in manycolors, have a variety of top and bottom valves, fittings and inlets/outlets and are built bya number of manufacturers. They use both spring loaded pressure relief devices(PRD’s) and frangible disks (also known as rupture discs) to relieve over-pressurizationwhen exposed to heat or some other reason that there would be an internal pressureincrease.The pressure relief devices typically operate at 75% of the tank car test pressure, whichis shown in the tank cars specifications (found printed on the right side of the tank carwhen you are facing it). But an interesting note for the person that really studies thedetails of tank cars, which maybe confusing to the tank car interested person, is thatfrangible disk equipped cars can have a pressure range of up to 165 PSI (but a tank testpressure of only 100 PSI.) Something to think about. General service tank carstransport both hazardous and non-hazardous products.

High Pressure Tank Cars are estimated to be about 22% of the tank car fleet in NorthAmerica. They have a tank hydrostatic pressure test of 100 to 600psi. They havecapacities that range from 4,000 to 45,000 gallons. They come in many colors, have avariety of top valves, fittings and inlets/outlets, gauging devices and are built by anumber of manufacturers. They only use spring operated PRD’s to release or decreaseinternal pressure when exposed to heat or for some other reason there is an internalpressure build up. Again it is common for the PRD to be set to operate at 75% of thetank test pressure like the general service tank, but that is not always true. Many DOT112 tank cars will have PRD’s set for 82.5% of the tank test pressure. High pressuretank cars are built to transport hazardous materials. The DOT 105 tank car isconsidered to be the best/safest “container package” of the tank cars types.

Cryogenic Tank Cars are estimated to be less than 1% of the tank car fleet in NorthAmerica; there maybe less than actually 200 of this style of tank cars. They operatewith a pressure range of 0 to 25psi. They have capacities that range from about16,000 gallons to 30,000 gallons. They are generally white in color, and have a varietyof valves, fittings and inlets/outlets, and gauging devices on the sides or ends. Theytransport “cryogenic” products (minus 130 degrees F or below), all of which fall into thehazardous material classifications.

The identification of the tank car types (general service/low pressure or high pressure)usually is not too difficult, if you know what you are looking for. The sources ofinformation come from several places or ways to identify tank car types:First – the specification markings which will be found on the right side of the car, as youare facing it from either side. The specifications come from the Department ofTransportation (DOT) in the United States and Transport Canada (TC) in Canada.Older tank cars are will have ICC (Interstate Commerce Commission) specifications, asthe ICC was the US’ certifying agency prior to creation of the Department ofTransportation in the 1960s. There is a string of letters and numbers that make up thespecifications, two examples are DOT111A100W-3 or DOT105J500W. Occasionallyyou will see tank cars with AAR specifications; these tank cars first meet the DOTspecifications, but have some type of additional features. As a “nonhazmat responder”person, you would only be interested in the first 6 letters/numbers to help you. Also youneed to be close enough to read these markings or be using binoculars.The most common general service / low pressure tank cars have specifications ordesign features that cause the tank car to be marked as a: DOT 111, DOT 115, or AAR211. There are two types of DOT 111’s today, and there is a visual difference which we

will discuss below. Out in the field, these are known as either “super 111’s” or just“111’s”. The most common high pressure tank cars have specifications or designfeatures that cause the tank car to be marked as a: DOT 112, DOT 105, or DOT 114.Cryogenic tank car specifications or design features will be marked: DOT 113 or AAR204.Second – the second way (but you can get fooled), is to look at the top of the tank car.On a general service/low pressure tank car, all of the valves, fittings, pressure reliefdevices (PRD), and manway are all exposed across the top of the car (except forthe super 111). They may be spread out across the top of the car in the work area(enclosed by a handrail) or the PRD maybe outside of the handrail area. On tank carsthat carry certain corrosive liquids have all of the “stuff” (listed above) placed on a platethat covers the access opening into the tank car. On a high pressure tank car, all of thevalves, gauging device, PRD and other equipment are placed inside of a protectivehousing. This housing is designed to protect this equipment during a derailment.On the DOT “Super 111” (again a general service tank car), all of the “stuff” describedabove in the general service tank car paragraph will be placed inside a “protectivehousing” also, but I have seen these types of tank cars with PRD equipment outside thehousing. So you must look closely, this type of car may look like a high pressure tankcar during a quick glance, which is why it is always best to look at the specificationmarking. As a hazmat responder, I will look at the top of the car first, because I can seethat area from a distance, but I will follow that up with a look at the specification markingto verify.

Third – another source of information, is to check for bottom outlets, only generalservice/low pressure tank cars have bottom outlets. If you are doing this, you must bepretty close or the tank car is not moving by.Cryogenic tank cars will normally have features or construction style that makes themstand out from the other types of tank cars. They will normally have theirloading/unloading equipment, valves, etc. inside of a compartment on the sides or endof the tank car. They will look like they have a stronger construction, because they haveliterally a tank built inside of another tank. Also they must be strong enough to be ableto handle an insulating vacuum that is drawn on the space between the outside wall andthe inside tank of the tank car.Tank cars in trains will be either: fully loaded, listed as empty but with some product stillinside (known as “residue” cars), or “really” empty. A “residue” car may have as muchas 3% of the original product still in it. Tank cars that transport hazardous materialsmust continue to be placarded until they are completely cleaned out, meaning no traceof product liquid or vapors. Tank cars also don’t just sit in any location in a train, ofcourse they may be placed with a group of cars going to a certain location, but with

hazardous materials there are some rules. Full placarded tank cars must have five carsbetween them and the locomotives (for crew safety), residue cars must have one carbetween them and the locomotive, empty (cleaned out) or non-hazardous materials cango in any location in the train. There are exceptions from these general placementrequirements for tank cars placarded “Combustible, Class 9” or simply marked with theidentification number of the product (but another article could discuss theseconsiderations). Also, product compatibility can be an issue. Certain products shouldnot be next to each other in case there is a derailment and products get out of theircontainers. Some “interesting” (and dangerous) things can happen, when noncompatibles get together. Just some things to think about when you are assembling atrain and making up the train list or consist.And as a final few bits of information, the end of the tank car with the brake wheel isknown as the “B” end of the car, the other end is known as the “A” end. Also, all tankscars are required to have “double shelf” couplers and many tank cars will have headshields built either into the tank ends (known as interior) or outside of the tank jacket(known as exterior or external) to prevent tank car tank damage from couplers duringderailments.Now that you have been educated on tank cars, here are a few more photos to ponder:

Factoid: Some people expect ethanol in tank cars to be the number one transportedhazmat product in the future by the railroads. Iowa is the number one producer ofethanol at this time, with more plants and production being built, and will be contributingheavily to these load/transport numbers. "Ethanol" in tank cars will be placarded UN1987 (denatured alcohol), UN 1193/1203 (gasohol) or UN 1170 (pure ethanol/ethylalcohol).Look for a newsletter article in the near future on "Reading placards, UN numbers andthe 9 DOT hazard classes"ADM 29234 is placarded UN 1987 for Ethanol.1,666 words1.3916 photos

hazardous materials there are some rules. Full placarded tank cars must have five cars between them and the locomotives (for crew safety), residue cars must have one car between them and the locomotive, empty (cleaned out) or non-hazardous materials can go in any location in the

Related Documents:

Bruksanvisning för bilstereo . Bruksanvisning for bilstereo . Instrukcja obsługi samochodowego odtwarzacza stereo . Operating Instructions for Car Stereo . 610-104 . SV . Bruksanvisning i original

10 tips och tricks för att lyckas med ert sap-projekt 20 SAPSANYTT 2/2015 De flesta projektledare känner säkert till Cobb’s paradox. Martin Cobb verkade som CIO för sekretariatet för Treasury Board of Canada 1995 då han ställde frågan

service i Norge och Finland drivs inom ramen för ett enskilt företag (NRK. 1 och Yleisradio), fin ns det i Sverige tre: Ett för tv (Sveriges Television , SVT ), ett för radio (Sveriges Radio , SR ) och ett för utbildnings program (Sveriges Utbildningsradio, UR, vilket till följd av sin begränsade storlek inte återfinns bland de 25 största

Hotell För hotell anges de tre klasserna A/B, C och D. Det betyder att den "normala" standarden C är acceptabel men att motiven för en högre standard är starka. Ljudklass C motsvarar de tidigare normkraven för hotell, ljudklass A/B motsvarar kraven för moderna hotell med hög standard och ljudklass D kan användas vid

FISHFINDER 340C : RAM-101-G2U RAM-B-101-G2U . RAM-101-G2U most popular. Manufacturer Model RAM Recommended Mount The Mount Depot Note . GARMIN FISHFINDER 400C . RAM-101-G2U RAM-B-101-G2U . RAM-101-G2U most popular. GARMIN FISHFINDER 80 . RAM-101-G2U RAM-B-101-G2U . RAM-101-

prevent tank uplifting, the following are minimum requirements for different types of common tank supports and surfaces upon which the tank shall be placed. Tank Supports – Tank supports shall be either (a) types that are included under the tank Listing (steel saddles welded to tank), or (b) 1.25" diameter

Fin – Input flow rate of the tank F out – Output flow rate of the tank H - Total height of the conical tank. R - Top radius of the conical tank h - Nominal level of the tank r - Radius at nominal level Fig3. Mathematical modeling of a conical tank The area of the conical tank is given by (3.1) R

UOB Plaza 1 Victoria Theatre and Victoria Concert Hall Jewel @ Buangkok . Floral Spring @ Yishun Golden Carnation Hedges Park One Balmoral 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 101 101 101 101 101 101 101 101 101. BCA GREEN MARK AWARD FOR BUILDINGS Punggol Parcvista . Mr Russell Cole aruP singaPorE PtE ltd Mr Tay Leng .

BULK STORAGE OF LIQUID CHLORINE 5 2.3 TANK CAR AND TANK MOTOR VEHICLE SIZES Rail tank cars typically have a chlorine capacity of 90 tons (81,647 kg), though a few tank cars having 55 tons (49,900 kg) and 85 tons (77,100 kg) capacities are still in use. In North America, most tank motor vehicle trucks h

RECOMMENDED EXPANSION TANK For the SANITARY circuit: Q-PUFFER 300: ELBI expansion tank D-DV series, AC-2 model Q-PUFFER 400: ELBI expansion tank D-DV series, D-5 model For water storage tank: Q-PUFFER 300: ELBI expansion tank ERCE series, ER-24 model Q-PUFFER 400: ELBI expansion tank

och krav. Maskinerna skriver ut upp till fyra tum breda etiketter med direkt termoteknik och termotransferteknik och är lämpliga för en lång rad användningsområden på vertikala marknader. TD-seriens professionella etikettskrivare för . skrivbordet. Brothers nya avancerade 4-tums etikettskrivare för skrivbordet är effektiva och enkla att

Den kanadensiska språkvetaren Jim Cummins har visat i sin forskning från år 1979 att det kan ta 1 till 3 år för att lära sig ett vardagsspråk och mellan 5 till 7 år för att behärska ett akademiskt språk.4 Han införde två begrepp för att beskriva elevernas språkliga kompetens: BI

**Godkänd av MAN för upp till 120 000 km och Mercedes Benz, Volvo och Renault för upp till 100 000 km i enlighet med deras specifikationer. Faktiskt oljebyte beror på motortyp, körförhållanden, servicehistorik, OBD och bränslekvalitet. Se alltid tillverkarens instruktionsbok. Art.Nr. 159CAC Art.Nr. 159CAA Art.Nr. 159CAB Art.Nr. 217B1B

2013 AMC 8 Problems Problem 1 Amma wants to arrange her model cars in rows with exactly 6 cars in each row. She now has 23 model cars. What is the smallest number of additional cars she must buy in order to be able to arrange all her cars this way? Solution Problem 2 A sign at the fish market says, "50% off, today only: half-pound packages for just 3 per package." What is the regular price .

101.5, 101.8, 101.9, 101.13, 101.17, 101.36, subpart D of part 101, and part 105 of this chapter shall appear either on the principal display panel or on the information panel, u

the mathematical model for interacting and non-interacting tank process with disturbances. Disturbance is applied to second tank in each case (interacting and non-interacting tank [2]-[8]. Noninteracting Tank System: In Non-Interacting Tank system it consist of two tank a

The technical data on the older model tanks have been . 48 Medium Tank M2A1 1940 100-101 49 Medium Tank, M. 3 . 1940 102-103 50 Light Tank, M3A1 1941 104-105 51 Light Tank, M3E1 1941 106-107 52 Light Tank, M3E2 1941 108-109 . machine gun

Lift and position the tank as per previous instructions. Once the tank is in position, remove the shipping cables from the tank. Do not leave the shipping cables under the tank. Follow standard vertical tank restraining methods shown in section 8.2 to restrain the tank assembly for wind or seismic conditions.

DWU Elevated Storage Tank Design Standards September 2013 9 b. Tank Location: i. The engineer must evaluate the topography of the pressure zone for which the tank is being designed so as to locate the tank where it can provide the best operating pressure. The engineer’s design report will detail why the site was selected. ii.

The group work is a valuable part of systematic training and alerts people to other training opportunities. Most have been on training courses provided by a range of early years support groups and charities and to workshops run by individual settings. Some have gained qualifications, such as an NVQ level 3 or a degree in child development and/or in teaching. Previous meetings have focused on .