AS/NZS 4131:2003

1 - AS/NZS 4131:2003 POLYETHYLENE (PE) COMPOUNDS FOR PRESSURE PIPES AND FITTINGS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE AND APPLICATION
6 - 1.1 Scope
6 - 1.2 Application
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Brittle failure
7 - 3.2 Ductile mode
7 - 3.3 Hoop stress
7 - 3.4 Knee
8 - ¿3.5 Lower prediction limit of the predicted hydrostatic strength (¿LPL)
8 - 3.6 Minimum required strength (MRS)
8 - 3.7 Test pressure
8 - 4 COMPOSITION
8 - 4.1 General
8 - 4.1.1 Compounds
8 - 4.1.2 Melt flow rate (MFR)
8 - 4.2 Additives
8 - 4.2.1 Thermal stability
8 - 4.2.2 Carbon black
8 - 4.3 Coloured compounds
8 - 4.3.1 Yellow
9 - 4.3.2 Blue
9 - 4.3.3 Purple
9 - 4.3.4 Other colours
9 - 4.3.5 Dispersion
9 - 5 VOLATILE CONTENT
9 - 6 CLASSIFICATION
9 - 6.1 General
9 - 6.2 Rapid crack propagation resistance
10 - 7 LOWER PREDICTION LIMIT OF THE PREDICTED HYDROSTATIC STRENGTH (LPL)
10 - 8 RESISTANCE TO INTERNAL PRESSURE
11 - 9 SLOW CRACK GROWTH RESISTANCE
11 - 10 WEATHERING RESISTANCE
11 - 11 EFFECT ON WATER
11 - 12 MARKING
12 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
12 - A1 SCOPE
12 - A2 RELEVANCE
12 - A3 DEFINITIONS
12 - A3.1 Acceptable quality level (AQL)
12 - A3.2 Batch
12 - A3.3 Batch release test (BRT)
12 - A3.4 Inspection level
12 - A3.5 Lot
12 - A3.6 New formulation
12 - A3.7 Process verification test (PVT)
13 - A3.8 Sample
13 - A3.9 Sampling plan
13 - A3.10 Type test (TT)
13 - A4 PRODUCT CERTIFICATION
13 - A5 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN
13 - A5.1 General
13 - A5.2 Retesting
14 - A5.3 Rejection after test
14 - A6 TYPE TESTING FOR RE-EVALUATION
14 - A6.1 Change in material/compound
14 - A6.2 New Compound
14 - 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)
17 - APPENDIX B - METHOD FOR DETERMINING RESISTANCE TO INTERNAL PRESSURE
17 - B1 SCOPE
17 - B2 APPARATUS
17 - B3 PREPARATION OF TEST SPECIMENS
18 - B4 DETERMINATION OF TEST PRESSURE
18 - B5 CONDITIONING OF TEST SPECIMENS
18 - B6 PROCEDURE
19 - B7 REPORT
21 - APPENDIX C - METHOD FOR DETERMINING WEATHERING RESISTANCE FOR EXTERNAL STORAGE
21 - C1 SCOPE
21 - C2 APPLICATION
21 - C3 APPARATUS
21 - C4 EXPOSURE SITE
22 - C5 PROVISION OF TEST SPECIMENS
22 - C6 PROCEDURE
22 - C7 REPORT

Specifies requirement for polyethylene compounds suitable for manufacturing polyethylene pipe and fittings for pressure applications.

This Standard specifies requirements for polyethylene compounds (PE 80 and PE 100) suitable for manufacturing polyethylene pipes and fittings for pressure applications. Minimum requirements are given for materials, additives and long-term pressure performance. Methods of demonstrating compliance with this Standard are given in Appendix A. NOTE: Compounds complying with this Standard are not intended for use with gas containing more than 1% aromatics by volume. Where aromatic content is greater than this, testing for resistance to gas constituents should be carried out in accordance with ISO 4437.

First published in Australia in part as AS K125-1963.
Second edition 1969.
Revised and redesignated AS 1463-1973.
AS 1685 first published 1974.
Second edition 1984.
Second edition AS 1463-1988.
Revised and redesignated AS 4131(Int)-1993.
First published in New Zealand in part as NZS 1189:1953 (endorsement of BS 1973:1953).
Revised and redesignated NZSS 2034-1965.
Revised and redesignated NZS 7602-1977.
NZS 7646 first published 1978.
NZS 7610 first published 1991.
AS 1685-1984, AS 4131(Int)-1993, part of NZS 7602-1977, NZS 7646-1978 and NZS 7610-1991 jointly revised, amalgmated and redesignated AS/NZS 4131:1997.
Second edition 2001.
Third edition 2003.