USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Table 4: Significant Variables in the Inherent Risk Models for Gas Transmission and Hazardous Liquid Pipelines

Wednesday, November 21, 2012

Table 4: Significant Variables in the Inherent Risk Models for Gas Transmission and Hazardous Liquid Pipelines

(negative sign indicates a negative correlation with risk)

Excel | CSV

Gas transmission model Hazardous liquid model
+ Total Miles + Total Miles
+ Miles offshore + Miles from 26 to <28” diameter
+ Miles from 4 to <10” diameter + Miles pre-1920
+ Miles from 20 to <28” diameter + Offshore >20% SMYS
- Miles from 0 to <4” diameter + Onshore <20% SMYS
- Miles installed 2000-2009 + Regulated gathering lines
  + Total barrel-miles
  + HVL barrel-miles
  - Miles from 8 to <10” diameter
  - Miles from 22 to <24” diameter
  - Miles from 24 to <26” diameter
  - Miles from 30 to <32” diameter
  - Miles >36” diameter
  - Anhydrous ammonia barrel-miles

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, http://www.bts.gov.