AS/NZS 4131:2001

1 - AS/NZS 4131:2001 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
8 - 3.4 Knee
8 - 3.5 Lower prediction limit long-term hydrostatic strength
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 Other colours
9 - 4.3.4 Dispersion
9 - 5 VOLATILE CONTENT
9 - 6 CHEMICAL RESISTANCE
9 - 7 CLASSIFICATION
10 - 8 LOWER PREDICTION LIMIT LONG-TERM HYDROSTATIC STRENGTH
10 - 9 RESISTANCE TO INTERNAL PRESSURE
11 - 10 SLOW CRACK GROWTH RESISTANCE
12 - 11 SQUEEZE-OFF PROPERTIES
12 - 12 WEATHERING RESISTANCE
12 - 13 EFFECT ON WATER
12 - 14 MARKING
13 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
13 - A1 SCOPE
13 - A2 RELEVANCE
13 - A3 DEFINITIONS
13 - A3.1 Acceptable quality level (AQL)
13 - A3.2 Batch
13 - A3.3 Batch release test (BRT)
13 - A3.4 Inspection level
13 - A3.5 Lot
13 - A3.6 New formulation
13 - A3.7 Process verification test (PVT)
14 - A3.8 Sample
14 - A3.9 Sampling plan
14 - A3.10 Type test (TT)
14 - A4 PRODUCT CERTIFICATION
14 - A5 MINIMUM SAMPLING AND TESTING FREQUENCY PLAN
14 - A5.1 General
14 - A5.2 Retesting
15 - A5.3 Rejection after test
15 - A6 TYPE TESTING FOR RE-EVALUATION
15 - A6.1 Change in material/compound
15 - A6.2 Change in Items A6.1(a), A6.1(c)(i) or A6.1(d)(i)
15 - A6.3 Change in Items A6.1(b)(i), A6.(b)(ii), A6.1(c)(ii), A6.1(d)(ii), or A6.1(d)(iii)
18 - APPENDIX B - DETERMINATION OF TOLUENE EXTRACT OF CARBON BLACK
18 - B1 SCOPE
18 - B2 APPARATUS
18 - B3 REAGENT
18 - B4 PROCEDURE
18 - B5 CALCULATION
18 - B6 REPORT
19 - APPENDIX C - METHOD FOR DETERMINING CHEMICAL RESISTANCE
19 - C1 SCOPE
19 - C2 APPARATUS AND REAGENTS
19 - C2.1 Apparatus
19 - C2.2 Reagents
19 - C3 PREPARATION OF TEST SPECIMENS
19 - C4 NUMBER OF TEST SPECIMENS
20 - C5 CONDITION OF TEST SPECIMENS AND REAGENTS
20 - C6 PROCEDURE
20 - C7 REPORT
21 - APPENDIX D - METHOD FOR DETERMINING RESISTANCE TO INTERNAL PRESSURE
21 - D1 SCOPE
21 - D2 APPARATUS
21 - D3 PREPARATION OF TEST SPECIMENS
22 - D4 DETERMINATION OF TEST PRESSURE
22 - D5 CONDITIONING OF TEST SPECIMENS
22 - D6 PROCEDURE
23 - D7 REPORT
25 - APPENDIX E - METHODS OF TEST FOR SQUEEZE-OFF PROPERTIES OF PIPE
25 - E1 SCOPE
25 - E2 APPARATUS
25 - E3 TEST SPECIMENS
25 - E4 PROCEDURE
26 - E5 REPORT
27 - APPENDIX F - METHOD FOR DETERMINING WEATHERING RESISTANCE FOR EXTERNAL STORAGE
27 - F1 SCOPE
27 - F2 APPLICATION
27 - F3 APPARATUS
27 - F4 EXPOSURE SITE
28 - F5 PROVISION OF TEST SPECIMENS
28 - F6 PROCEDURE
28 - F7 REPORT
29 - APPENDIX G - DETERMINATION OF PIPE DIMENSIONS
29 - G1 SCOPE
29 - G2 TEMPERATURE OF MEASUREMENT
29 - G3 CONDITIONING OF REFERENCE SPECIMENS
29 - G4 DETERMINATION OF MEAN OUTSIDE DIAMETER
29 - G4.1 Apparatus
29 - G4.2 Procedure
29 - G5 DETERMINATION OF MINIMUM WALL THICKNESS
29 - G5.1 Apparatus
29 - G5.2 Procedure
30 - G6 REPORT

Specifies requirements for polyethylene compounds (PE 63, PE 80 and PE 100) suitable for manufacturing polyethylene pipe and fittings for pressure applications.

This Standard specifies requirements for polyethylene compounds (PE 63, PE 80 and PE 100) suitable for manufacturing polyethylene pipe 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.