Page 66 - Pipeline Pigging Technology

Pipeline design for pigging

PIPELINE DESIGN FOR PIGGING

INTRODUCTION

The first section of this paper highlights the management aspects of
pipeline design for pigging; the second section deals with some of the design
details themselves.
The management aspects concentrate on who must supply information at
what stage of the project, and how it should be handled.
A pipeline design project is divided into three major design stages:

conceptual design (basic engineering);
detailed design and procurement;
operating manual.

Conceptual design

Information flow is co-ordinated by the project management team. This
conceptual design information is used to determine the facilities (or capital
investment) and the operational requirements (and operational expenditure)
for the lifetime of the pipeline.
Following this, a more detailed estimate can be made to support the
feasibility of the project.
Then, the second phase of the project begins, involving detailed design
and procurement.

Detailed design and procurement

The conceptual design information is distributed by the project team to
the various departments who will specify the pipeline design in detail. This
information must be .specific enough for use by suppliers, inspectors, expe-

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