THE EVALUATION OF HIGHER STRENGTH POLYETHYLENE (PE1OO) PRESSURE
PIPES FOR WATER INDUSTRY APPLICATIONS INTERIM PROGRESS REPORT
FR0232

Sept 1991

SUMMARY

I OBJECTIVES

The objective of this report is to summarise the progress to date of the FWR research programme on higher strength polyethylene (PE100) pipe materials. This is designed to evaluate the performance and acceptability of PE100 materials for Water Industry use. It specifically relates to products based on Solvay TUB124.

II REASON

A new class of polyethylene (PE) material has become available for Water Industry use with a claimed Minimum Required Strength (MRS) value of 10 MPa (known as PE100). This material also has a claimed improved resistance to fast fracture. These properties could lead to expansion of use of PE pipelines to larger diameters without the need for pressure down-rating in these larger sizes, and/or to cost benefits from the use of thinner wall pipe.

III CONCLUSIONS

Interim results have confirmed fast fracture resistance properties but have raised matters of urgent concern relating to fusion jointing. In addition, more information is required to confirm long term performance and design capability.

IV RECOMMENDATIONS

The programme should continue to evaluate the performance of PE100 pipeline systems. Appropriate specifications and guidance on use should be developed.

V RESUME OF CONTENTS

This report summarises the progress to date in the PE100 research programme. It includes progress on the polymer characterisation, pipe performance assessment, pipe jointing, field installation trials and development of specifications and guidance.

Copies of the Report are available from FWR, price 15.00 less 20% to FWR Members.