American Petroleum Institute

Evaluation Standard for Internal Pressure Sheath Polymers for High Temperature Flexible Pipes - First Edition
 N TR 17TR1

Annotation

GENERAL

This technical report defines the methodology and test procedures necessary for the evaluation of polymeric materials suitable for use as the internal pressure sheath of an unbonded flexible pipes in high temperature applications. It describes the processes by which the critical material properties, both static and dynamic, can be measured and evaluated against relevant performance criteria.

This document relates primarily to the properties necessary for an internal pressure sheath required for oil and gas production. These are most relevant to high temperature applications. Only thermoplastic materials are considered for the internal pressure sheath. Elastomeric materials, which are used in bonded flexible pipes, are not considered in this document.

This document has the following format:

Section 1 Scope

Section 2 Referenced Documents

Section 3 Definitions and Acronyms

Section 4 Service Application - Background to selection of material tests used in the evaluation programme

Section 5 Evaluation Overview - The overall methodology employed in the evaluation of a candidate material

Section 6 Evaluation Test Programme - Presents, in detail, each of the material tests which form the material evaluation test programme

Section 7 Material Evaluation - Presents the criteria against which material test results should be compared and gives guidance on the interpretation of results.