AS/NZS 4131:2003

AS/NZS 4131:2003 POLYETHYLENE (PE) COMPOUNDS FOR PRESSURE PIPES AND FITTINGS

PREFACE

CONTENTS

1 SCOPE AND APPLICATION

1.1 Scope

1.2 Application

2 REFERENCED DOCUMENTS

3 DEFINITIONS

3.1 Brittle failure

3.2 Ductile mode

3.3 Hoop stress

3.4 Knee

¿3.5 Lower prediction limit of the predicted hydrostatic strength (¿LPL)

3.6 Minimum required strength (MRS)

3.7 Test pressure

4 COMPOSITION

4.1 General

4.1.1 Compounds

4.1.2 Melt flow rate (MFR)

4.2 Additives

4.2.1 Thermal stability

4.2.2 Carbon black

4.3 Coloured compounds

4.3.1 Yellow

4.3.2 Blue

4.3.3 Purple

4.3.4 Other colours

4.3.5 Dispersion

5 VOLATILE CONTENT

6 CLASSIFICATION

6.1 General

6.2 Rapid crack propagation resistance

7 LOWER PREDICTION LIMIT OF THE PREDICTED HYDROSTATIC STRENGTH (LPL)

8 RESISTANCE TO INTERNAL PRESSURE

9 SLOW CRACK GROWTH RESISTANCE

10 WEATHERING RESISTANCE

11 EFFECT ON WATER

12 MARKING

APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD

A1 SCOPE

A2 RELEVANCE

A3 DEFINITIONS

A3.1 Acceptable quality level (AQL)

A3.2 Batch

A3.3 Batch release test (BRT)

A3.4 Inspection level

A3.5 Lot

A3.6 New formulation

A3.7 Process verification test (PVT)

A3.8 Sample

A3.9 Sampling plan

A3.10 Type test (TT)

A4 PRODUCT CERTIFICATION

A5 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN

A5.1 General

A5.2 Retesting

A5.3 Rejection after test

A6 TYPE TESTING FOR RE-EVALUATION

A6.1 Change in material/compound

A6.2 New Compound

A6.3 Change to requirements of Paragraphs A6.1(b)(i), A6.1(b)(ii), A6.1(c)(ii), A6.1(d)(ii), or A6.1(d)(iii)

APPENDIX B - METHOD FOR DETERMINING RESISTANCE TO INTERNAL PRESSURE

B1 SCOPE

B2 APPARATUS

B3 PREPARATION OF TEST SPECIMENS

B4 DETERMINATION OF TEST PRESSURE

B5 CONDITIONING OF TEST SPECIMENS

B6 PROCEDURE

B7 REPORT

APPENDIX C - METHOD FOR DETERMINING WEATHERING RESISTANCE FOR EXTERNAL STORAGE

C1 SCOPE

C2 APPLICATION

C3 APPARATUS

C4 EXPOSURE SITE

C5 PROVISION OF TEST SPECIMENS

C6 PROCEDURE

C7 REPORT