Optimization of the Design and Operation of Natural Gas Pipeline Systems

1972 ◽  
Author(s):  
Henry B. Martch ◽  
Norman J. McCall
Keyword(s):  
Natural Gas ◽  
Gas Pipeline ◽  
Natural Gas Pipeline ◽  
Pipeline Systems

COMPETING WITH THE AGGREGATORS: SOME ISSUES WITH THE NATIONAL THIRD PARTY ACCESS CODE

1998 ◽  
Vol 38 (1) ◽  
pp. 522
Author(s):  
G. Radford
Keyword(s):  
Natural Gas ◽  
Gas Pipeline ◽  
Third Party ◽  
Spare Capacity ◽  
Natural Gas Pipeline ◽  
Natural Gas Markets ◽  
Access Code ◽  
Pipeline Systems ◽  
Gas Markets ◽  
Ready Access

Broadly stated, the objective of the National Third Party Access Code for Natural Gas Pipeline Systems is to promote competition in natural gas markets. For the National Access Code to achieve this objective in a meaningful way, it must allow prospective gas suppliers to gain ready access to pipeline systems.This paper considers two particular aspects of the National Access Code which may cause difficulties for new gas suppliers who wish to compete with incumbent gas aggregators. The first issue relates to the ease with which a new gas supplier can identify what spare capacity is available in a pipeline. The second issue is what type of capacity a new gas supplier can hope to obtain.

Seismic Vulnerability Assessment and Retrofit of a Major Natural Gas Pipeline System: A Case History

2005 ◽  
Vol 21 (2) ◽  
pp. 539-567 ◽  
Author(s):  
Dharma Wijewickreme ◽  
Douglas Honegger ◽  
Allen Mitchell ◽  
Trevor Fitzell
Keyword(s):  
Natural Gas ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Ground Improvement ◽  
Lateral Spreading ◽  
Gas Pipeline ◽  
Pipeline System ◽  
Seismic Vulnerability Assessment ◽  
Natural Gas Pipeline ◽  
Pipeline Systems

The performance of pipeline systems during earthquakes is a critical consideration in seismically active areas. Unique approaches to quantitative estimation of regional seismic vulnerability were developed for a seismic vulnerability assessment and upgrading program of a 500-km-long natural gas pipeline system in British Columbia, Canada. Liquefaction-induced lateral spreading was characterized in a probabilistic manner and generic pipeline configurations were modeled using finite elements. These approaches, developed during the early part of this 10-year program, are more robust than typical approaches currently used to assess energy pipeline systems. The methodology deployed within a GIS environment provided rational means of distinguishing between seismically vulnerable sites, and facilitated the prioritization of remedial works. While ground improvement or pipeline retrofit measures were appropriate for upgrading most of the vulnerable sites, replacement of pipeline segments using horizontal directional drilling to avoid liquefiable zones were required for others.

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