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Gas Transmission and Gathering Pipeline Systems

The chart below is also available in pdf format here: PST-Gas-PHMSA-pipeline-data-20130722

GAS TRANSMISSION AND GATHERING PIPELINE SYSTEMS DATA FROM PHMSA
DRAFT 2012
(PHMSA date: 7/1/13)(1)		 2011
(PHMSA date: 6/28/13)(2)		 2009(2) 2006(2)
TOTAL miles of Transmission Pipelines 302,386 304,944 304,415 300,339
Miles of Onshore 297,091 299,631 298,837 293,720
Miles of Offshore 5,295 5,313 5,578 6,619
Miles of Transmission Lines in HCA 19,750 20,374 N/A N/A
Onshore 19,745 20,428
Offshore 5 9
TOTAL miles of Gathering Pipelines (regulated)(3) 16,657 20,155 20,535 20,763
Miles of Onshore Type A 7,294 8,574 13,890 13,203
Miles of Onshore Type B 4,013 5,114
Miles of Offshore 5,351 6,466 6,645 7,560
Volume transported in M cubic feet by commodity (Transmission Pipelines) 113,108,550,401 64,398,875,746 N/A N/A
Natural Gas 112,939,160,474 63,521,515,353
Propane Gas 0 448,059,394
Synthetic Gas 56,614 170,748
Hydrogen Gas 45,740,123 4,370,024
Landfill Gas 2,725,142 4,199,276
Other Gas 120,868,048 420,560,950
Miles of Steel Transmission Pipe Total 295,222 303,334 302,849 299,203
Coated Cathodically protected 287,459 293,932 295,759 289,077
Bare Cathodically protected 5,902 8,131 5,524 7,959
Coated not cathodically protected 558 140 192 342
Bare Not Cathodically protected 1,303 1,131 1,374 1,824
Miles of Steel Gathering Pipe Total 15,018 18,043 19,125 19,491
coated cathodically protected 13,759 15,892 17,521 17,994
Bare Cathodically protected 330 670 441 841
Coated Not cathodically protected 688 1,013 365 220
Bare not Cathodically protected 241 468 798 437
TOTAL miles Steel pipe 310,240 321,377 321,974 318,694
TOTAL Miles of Non Steel Pipe 2,420 3,667 2,976 2,408
Sub total Transmission non steel pipes (miles) 1,330 1,545 1,565 1,136
Cast Iron 0 0 33 40
Wrought Iron 61 59
Plastic 1,207 1,427 1,150 737
Composite 3 0 N/A N/A
Other 59 60 382 359
Sub total Gathering non-steel Pipes (miles) 1,090 2,121 1,410 1,271
Cast Iron 0 38 0 2
Wrought Iron 1 1
Plastic 1,076 2,048 1,208 1,062
Composite 5 0 N/A N/A
Other 8 35 202 207
Inspections and Repairs N/A N/A
Total miles inspected using all methods 59,212 50,002
Total number of anomalies repaired in and out of HCA segment 39,973 33,120
Total number of conditions repaired in an HCA segment 1,129 1,483
Total Mileage inspected using the following in line inspection tools 49,836 43,971
Corrosion or metal loss tools 23,697 21,267
Dent or deformation tools 23,927 20,263
Crack or long seam defect tools 1,495 1,153
Any other internal inspection tools 717 1,288
Repairs made based on ILI 39,147 32,141
Total miles inspected by pressure testing 2,069 1,687
Total repairs following pressure test failures 52 71
Total miles inspected by Direct Assessment 4,793 3,273
ECDA 2,163 2,000
ICDA 1,757 893
SCCDA 873 379
Total anomalies identified by DA and repaired in and out of HCA 750 853
ECDA 729 822
ICDA 21 25
SSCDA 0 6
Total miles inspected by other methods 2,514 1,071
Total anomalies identified by other methods and repaired in and out of HCA 24 55
Miles of Transmission pipeline by decade installed 302,427 304,940 304,573 300,324
Pre-1940 or unknown 14,426 14,959 16,775 20,869
1940-1949 21,887 22,572 22,657 24,096
1950-1959 69,386 69,891 71,391 71,008
1960-1969 71,756 72,230 73,188 73,976
1970-1979 31,495 32,213 32,375 32,314
1980-1989 26,020 26,438 27,384 27,624
1990-1999 30,448 31,608 32,340 32,316
2000-2009 30,326 30,007 28,463 18,121
2010- 2019 6,683 5,023 N/A N/A
Miles of Gathering line by decade installed 16,671 20,156 20,378 20,898
Pre 1940 or unknown 1,785 3,054 1,604 1,850
1940-1949 311 381 432 552
1950-1959 940 867 1,347 1,708
1960-1969 1,527 1,890 2,528 2,890
1970-1979 2,172 2,656 2,926 3,466
1980-1989 2,624 3,363 3,607 4,200
1990-1999 3,060 3,118 3,458 4,086
2000-2009 3,283 4,105 4,475 2,147
2010-2019 970 721 N/A N/A
Incidents and failures in HCA segments
Incidents(4) 15 10 6 8
Failures 23 22 N/A N/A
  1. Downloaded 7/17/13 from http://www.regulations.gov/#!docketDetail;D=PHMSA-2013-0119
  2. Annual report data downloaded from PHMSA for each year indicated above.Accessed 7/17 from this web page – http://www.phmsa.dot.gov/portal/site/PHMSA/menuitem.ebdc7a8a7e39f2e55cf2031050248a0c/?vgnextoid=a872dfa122a1d110VgnVCM1000009ed07898RCRD&vgnextchannel=3430fb649a2dc110VgnVCM1000009ed07898RCRD&vgnextfmt=print
  3. PHMSA acknowledges over 10x the number of gathering lines as reported here exist onshore, though the majority remain unregulated. See briefing paper from 3/24/11 on Onshore Gas Gathering from the Technical Pipeline Safety Standards Committee, downloaded as “Briefing – TPSSC – Onshore Gas Gathering – March 2011” from this webpage on 7/18/13: http://www.phmsa.dot.gov/portal/site/PHMSA/menuitem.ebdc7a8a7e39f2e55cf2031050248a0c/?vgnextoid=e875afe58ddcd210VgnVCM1000001ecb7898RCRD&vgnextchannel=032d93dff56c7110VgnVCM1000009ed07898RCRD&vgnextfmt=print
  4. Data from incident reports by year indicated as “YES” occurring within an HCA. Accessed 7/17/13 from http://www.phmsa.dot.gov/portal/site/PHMSA/menuitem.ebdc7a8a7e39f2e55cf2031050248a0c/?vgnextoid=fdd2dfa122a1d110VgnVCM1000009ed07898RCRD&vgnextchannel=3430fb649a2dc110VgnVCM1000009ed07898RCRD&vgnextfmt=print