Table B-9f. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Pipeline for Selected UN Numbers: 2002
Monday, July 2, 2012
Table B-9f. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Pipeline for Selected UN Numbers: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
| UN number | Description | Value | Tons | Ton-miles | CV of average miles per shipment |
|||
|---|---|---|---|---|---|---|---|---|
| CV | Std. error of percent | CV | Std. error of percent | CV | Std. error of percent | |||
| Total | 6.6 | – | 7.0 | – | 14.8 | – | 36.7 | |
| 1005 | Ammonia, anhydrous | S | S | S | S | S | S | 34.8 |
| 1011 | Butane | 40.6 | 0.2 | 45.9 | 0.2 | S | S | 47.9 |
| 1013 | Carbon dioxide | S | S | S | S | S | S | S |
| 1066 | Nitrogen, compressed | S | S | S | S | S | S | 29.0 |
| 1072 | Oxygen, compressed | S | S | S | S | S | S | 31.6 |
| 1075 | Petroleum gases | 21.5 | 0.5 | 20.7 | 0.4 | 35.9 | 0.8 | S |
| 1077 | Propylene | 45.7 | 0.4 | 43.0 | 0.3 | 41.0 | – | S |
| 1114 | Benzene | S | S | S | S | S | S | S |
| 1202 | Gas oil, diesel fuel, heating oil, light | 22.8 | 1.3 | 20.2 | 1.4 | 23.8 | 0.9 | 27.3 |
| 1203 | Gasoline | 8.1 | 3.3 | 8.0 | 3.4 | 24.9 | 7.9 | 15.4 |
| 1223 | Kerosene | S | S | S | S | S | S | S |
| 1230 | Methanol | S | S | S | S | S | S | 26.2 |
| 1830 | Sulfuric acid | S | S | 33.7 | 0.1 | 29.1 | – | 19.6 |
| 1863 | Fuel, aviation, turbine engine | 17.6 | 1.5 | 18.9 | 1.6 | 34.1 | 2.4 | S |
| 1962 | Ethylene | 32.0 | 1.0 | 33.7 | 0.6 | 45.0 | 0.5 | 40.9 |
| 1964 | Hydrocarbon gas mixture, compressed, n.o.s. | 45.7 | 0.8 | 44.2 | 0.5 | S | S | S |
| 1965 | Hydrocarbon gas mixture, liquefied, n.o.s. | 43.3 | 0.1 | S | S | S | S | 23.6 |
| 1993 | Flammable liquids, n.o.s. | 16.1 | 1.8 | 17.1 | 2.2 | 17.4 | 3.9 | 35.8 |
| 2398 | Methyl tert-butyl ether | 41.2 | 0.2 | 41.2 | 0.1 | 41.2 | – | 25.8 |
| 3295 | Hydrocarbons, liquid, n.o.s. | S | S | S | S | S | S | 31.6 |
| – | All other | 19.6 | 0.4 | 19.4 | 0.4 | S | S | 34.0 |
KEY:
– Represents an estimate equal to zero or less than 1 unit of
measure.
S Estimate does not meet publication standards because of highly sampling
variability or poor response quality.
CV Coefficient of variation of number
NOTE: The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.