Table 1 to Paragraph (c)
Proper shipping name | Outage and filling limits (see note 1) | Authorized tank car class (see note 11) | Authorized tank car specification (see note 12) |
Ammonia, anhydrous, or ammonia solutions [GREATER THAN]50 percent ammonia | Notes 2, 10 | 105, 112, 114, 120 | 105H500W, 112H500W |
Note 3 | 106 | ||
Ammonia solutions with [GREATER THAN]35 percent, but [LESS THAN EQUAL TO]50 percent ammonia by mass | Note 3 | 105, 109, 112, 114, 120 | |
Argon, compressed | Note 4 | 107 | |
Boron trichloride | Note 3 | 105, 106 | |
Carbon dioxide, refrigerated liquid | Note 5 | 105 | |
Chlorine | Note 6 | 105 | 105H600W |
125 | 106 | ||
Chlorine trifluoride | Note 3 | 106, 110 | |
Chlorine pentafluoride | Note 3 | 106, 110 | |
Dimethyl ether | Note 3 | 105, 106, 110, 112, 114, 120 | |
Dimethylamine, anhydrous | Note 3 | 105, 106, 112 | |
Dinitrogen tetroxide, inhibited | Note 3 | 105, 106, 112 | 105H500W |
Division 2.1 materials not specifically identified in this table | Notes 9, 10 | 105, 106, 110, 112, 114, 120 | |
Division 2.2 materials not specifically identified in this table | Note 3 | 105, 106, 109, 110, 112, 114, 120 | |
Division 2.3 Zone A materials not specifically identified in this table | None | See § 173.245 . | 105H600W |
Division 2.3 Zone B materials not specifically identified in this table | Note 3 | 105, 106, 110, 112, 114, 120 | 105H600W |
Division 2.3 Zone C materials not specifically identified in this table | Note 3 | 105, 106, 110, 112, 114, 120 | 105H500W |
Division 2.3 Zone D materials not specifically identified in this table | Note 3 | 105, 106, 109, 110, 112, 114, 120 | 105H500W, 112H500H |
Ethylamine | Note 3 | 105, 106, 110, 112, 114, 120 | |
Helium, compressed | Note 4 | 107 | |
Hydrogen | Note 4 | 107 | |
Hydrogen chloride, refrigerated liquid | Note 7 | 105 | 105H600W, 112H600W |
Hydrogen sulfide | Note 3 | 105, 106, 110, 112, 114, 120 | 105H600W |
Hydrogen sulfide, liquefied | 68 | 106 | |
Methyl bromide | Note 3 | 105, 106 | 105H500W |
Methyl chloride | Note 3 | 105, 106, 112 | |
Methyl mercaptan | Note 3 | 105, 106 | 105H500W |
Methylamine, anhydrous | Note 3 | 105, 106, 112 | |
Nitrogen, compressed | Note 4 | 107 | |
Nitrosyl chloride | 124 | 105 | 105H500W |
110 | 106 | ||
Nitrous oxide, refrigerated liquid | Note 5 | 105 | |
Oxygen, compressed | Note 4 | 107 | |
Phosgene | Note 3 | 106 | |
Sulfur dioxide, liquefied | 125 | 105, 106, 110 | 105H500W |
Sulfuryl fluoride | 120 | 105 | |
Vinyl fluoride, stabilized | Note 8 | 105 |
Notes to table 1 to paragraph (c):
1. The filling density percentage for liquefied gases is hereby defined as the percent ratio of the mass of gas in the tank to the mass of water that the tank will hold. For determining the water capacity of the tank in kilograms, the mass of 1 L of water at 15.5 °C in air is 1 kg (the mass of one gallon of water at 60 °F in air is 8.32828 pounds).
2. The liquefied gas must be loaded so that the outage is at least two percent of the total capacity of the tank at the reference temperature of 46 °C (115 °F) for a non-insulated tank; 43 °C (110 °F) for a tank having a thermal protection system incorporating a metal jacket that provides an overall thermal conductance at 15.5 °C (60 °F) of no more than 10.22 kilojoules per hour-per square meter-per degree Celsius (0.5 Btu per hour/per square foot/per degree F) temperature differential; and 41 °C (105 °F) for an insulated tank having an insulation system incorporating a metal jacket that provides an overall thermal conductance at 15.5 deg;C (60 °F) of no more than 1.5333 kilojoules per hour-per square meter-per degree Celsius (0.075 Btu per hour/per square foot/per degree F) temperature differential.
3. The requirements of § 173.24b(a) apply.
4. The gas pressure at 54.44 °C (130 °F) in any non-insulated tank car may not exceed 7/10 of the marked test pressure, except that a tank may be charged with helium to a pressure of 10 percent in excess of the marked maximum gas pressure at 54.44 °C (130 °F) of each tank.
5. The liquid portion of the gas at -17.77 °C (0 °F) must not completely fill the tank.
6. The maximum permitted filling density is 125 percent. The quantity of chlorine loaded into a single unit-tank car may not be loaded in excess of the normal lading weights nor in excess of 81.65 Mg (90 tons).
7. 89 percent maximum to 80.1 percent minimum at a test pressure of 6.2 bar (90 psig).
8. 59.6 percent maximum to 53.6 percent minimum at a test pressure of 7.2 bar (105 psig).
9. For a liquefied petroleum gas, the liquefied gas must be loaded so that the outage is at least one percent of the total capacity of the tank at the reference temperature of 46 °C (115 °F) for a non-insulated tank; 43 °C (110 °F) for a tank having a thermal protection system incorporating a metal jacket that provides an overall thermal conductance at 15.5 °C (60 °F) of no more than 10.22 kilojoules per hour-per square meter-per degree Celsius (0.5 Btu per hour/per square foot/per degree F) temperature differential; and 41 °C (105 °F) for an insulated tank having an insulation system incorporating a metal jacket that provides an overall thermal conductance at 15.5 °C (60 °F) of no more than 1.5333 kilojoules per hour-per square meter-per degree Celsius (0.075 Btu per hour/per square foot/per degree F) temperature differential.
10. For liquefied petroleum gas and anhydrous ammonia, during the months of November through March (winter), the following reference temperatures may be used: 38 °C (100 °F) for a non-insulated tank; 32 °C (90 °F) for a tank having a thermal protection system incorporating a metal jacket that provides an overall thermal conductance at 15.5 °C (60 °F) of no more than 10.22 kilojoules per hour-per square meter-per degree Celsius (0.5 Btu per hour/per square foot/per degree F) temperature differential; and 29 °C (85 °F) for an insulated tank having an insulation system incorporating a metal jacket and insulation that provides an overall thermal conductance at 15.5 °C (60 °F) of no more than 1.5333 kilojoules per hour-per square meter-per degree Celsius (0.075 Btu per hour/per square foot/per degree F) temperature differential. The winter reference temperatures may only be used for a tank car shipped directly to a consumer for unloading and not stored in transit. The offeror of the tank must inform each customer that the tank car was filled based on winter reference temperatures. The tank must be unloaded as soon as possible after March in order to retain the specified outage and to prevent a release of hazardous material, which might occur due to the tank car becoming liquid full at higher temperatures.
11. For materials poisonous by inhalation, until December 31, 2027, the single unit tank car tanks authorized are only those cars approved by the Tank Car Committee for transportation of the specified material and built prior to March 16, 2009. After December 31, 2027, all single unit tank cars used in PIH/TIH service must meet the requirements of Note 12.
12. Except as provided in paragraph (d) of this section, for materials poisonous by inhalation, fusion-welded tank car tanks built on or after March 16, 2009, used for the transportation of the PIH materials noted, must meet the applicable authorized tank car specification and must be equipped with a head shield as prescribed in § 179.16(c)(1) .
49 C.F.R. §173.314
For FEDERAL REGISTER citations affecting § 173.314, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.