Page 9 - Pipeline Pigging Technology

Clean air act 84
Comprehensive environmental response, compensation,
and liability act
Resource conservation and recovery act
Toxic substances control act
Other environmental regulations

Part 2: Operational Experience

A computerized inspection system for pipelines 93
Background 93
Scope of the system 97
The system 98
How the system matches-up to expectations 111
Additional benefits 112
10 years of intelligent pigging: an operator's view 115
Pipeline details 115
Gas quality and quantity 117
Geometric inspection 118
Intelligent pigging 120
Comparison between magnetics and ultrasonics 122
1988 inspection of Line 1, south 125
The Zeepipe challenge: pigging 810km of subsea gas
pipeline in the North Sea 129
Pigging in Zeepipe . 131
Pig wear and tear 134
Pig development and testing 138
Inspection of the BP Forties sea line using the British Gas
advanced on-line inspection system 143
Pipeline details 145
Inspection vehicle details 147
Inspection programme 147
Inspection operation results 153
Gellypig technology for conversion of a crude oil
pipeline to natural gas service: a case history 163
Background 164
Design 166
Gellypig train components 168
Execution 170
Results 173