AS/NZS 1546.2:2008

1 - AS/NZS 1546.2:2008 ON-SITE DOMESTIC WASTEWATER TREATMENT UNITS - PART 2: WATERLESS COMPOSTING TOILETS
4 - FOREWORD
5 - CONTENTS
6 - 1 GENERAL
6 - 1.1 Objective
6 - 1.2 Scope and interpretation
6 - 1.2.1 Scope
6 - 1.2.2 Interpretation
6 - 1.3 Application
7 - 1.3.1 Conventional designs and materials
7 - 1.3.2 Non-standard materials, installations or designs
7 - 1.3.3 Operation and maintenance
7 - 1.4 Legislation
7 - 1.4.1 Australia
7 - 1.4.1.1 Approval
7 - 1.4.1.2 Building Code of Australia
7 - 1.4.2 New Zealand
7 - 1.4.2.1 New Zealand Building Code
8 - 1.4.2.2 Resource Management Act
8 - 1.4.2.3 Health Act
8 - 1.5 Referenced documents
9 - 1.6 Definitions
11 - 1.7 Abbrevations
12 - 2 PERFORMANCE REQUIREMENTS AND PERFORMANCE CRITERIA
12 - 2.1 Scope
12 - 2.2 Perfomance objective
12 - 2.3 General
12 - 2.3.1 Function
12 - 2.3.2 Context of use
13 - 2.4 Performance requirements
13 - 2.4.1 General
13 - 2.4.2 Public health and environment
13 - 2.4.3 Construction
14 - 2.4.4 Mechanical and electrical equipment
14 - 2.4.5 Serviceable life
14 - 2.5 Performance criteria – Public health and environment
14 - 2.5.1 Non-contact with compost pile
14 - 2.5.2 Opening at pedestal base
14 - 2.5.3 Ventilation
14 - 2.5.4 Insect and vermin control
15 - 2.5.5 Watertightness
15 - 2.5.6 End product quality
15 - 2.5.6.1 Composted end product
15 - 2.5.6.2 Liquid end product
15 - 2.6 Performance criteria – Construction
15 - 2.6.1 Access openings and covers to chambers
15 - 2.6.1.1 General
15 - 2.6.1.2 Access covers
15 - 2.6.2 Materials
15 - 2.6.2.1 Degradation
15 - 2.6.2.2 Exposure to the environment
15 - 2.6.2.3 Cleaning
16 - 2.6.3 Loads
16 - 2.6.3.1 General
16 - 2.6.3.2 Integrity during handling or installation
16 - 2.6.3.2.1 General
16 - 2.6.3.2.2 Verification test
16 - 2.6.3.3 In-ground installation
16 - 2.6.3.4 Hydrostatic uplift
16 - 2.6.3.5 Top loads
16 - 2.6.4 Inspection and maintenance
16 - 2.6.5 Mechanical and electrical equipment
17 - 2.6.6 Alarm system
17 - 2.6.7 Noise
18 - 3 DESIGN FACTORS
18 - 3.1 Scope
18 - 3.2 General
18 - 3.3 Design considerations – Public health and environment
18 - 3.3.1 End products
18 - 3.3.1.1 Composted end product
18 - 3.3.1.2 Excess liquid
18 - 3.3.2 Odour control
19 - 3.3.3 Insect and vermin control
19 - 3.4 Design considerations – Construction
19 - 3.4.1 Design capacity
19 - 3.4.2 Composting chamber
19 - 3.4.3 Access
20 - 3.4.4 Construction materials
20 - 3.4.4.1 Selection and use
20 - 3.4.4.2 Pipes, fittings, and fixings
20 - 3.5 Composting requirements
20 - 3.5.1 Compost aeration
20 - 3.5.2 Temperatures and humidities – Manufacturer’s specification
20 - 3.5.3 Temperatures and humidities – Short-term variance
21 - 3.5.4 Temperatures and humidities – Long-term variance
21 - 3.6 Marking
21 - 3.7 Testing
21 - 3.8 Monitoring
21 - 3.9 Non-residential design guidelines
22 - 4 INFORMATION AND INSTRUCTIONS
22 - 4.1 Scope
22 - 4.2 Installation, operation, and maintenance manual
22 - 4.2.1 Operating conditions
22 - 4.2.1.1 Normal conditions
22 - 4.2.1.2 Operating conditions outside approval test range
22 - 4.2.2 Installation instructions
22 - 4.2.3 Operation and maintenance
23 - 4.2.4 Risk management
23 - 4.2.4.1 Remedial action
23 - 4.2.4.2 Disposal of end products
24 - 5 MARKING
24 - 5.1 Minimum information
24 - 5.2 Permanence and visibility
25 - APPENDIX A - COMPOSTED END PRODUCT QUALITY
25 - A1 SCOPE
25 - A2 QUALITY REQUIREMENTS
25 - A3 COLOUR
26 - APPENDIX B - DETERMINATION OF WATERTIGHTNESS
26 - B1 SCOPE
26 - B2 PRINCIPLE
26 - B3 APPARATUS
26 - B4 TESTING
26 - B4.1 Procedure
26 - B4.2 Test criteria
26 - B5 REPAIR
26 - B6 TEST RECORDS
27 - APPENDIX C - SAMPLING OF COMPOSTED END PRODUCT
27 - C1 SCOPE
27 - C2 PRINCIPLES
27 - C3 APPARATUS
27 - C4 PROCEDURE FOR SAMPLING
28 - C4.1 Samples
28 - C4.2 Size, location, and number of samples
28 - C4.3 Sample consistency, odour, and colour
29 - C4.4 Sample labelling
29 - C4.5 Sample storage and delivery
30 - APPENDIX D - PERFORMANCE EVALUATION PROCESS
30 - D1 SCOPE
30 - D2 PRINCIPLE
30 - D3 MODEL SERIES
30 - D4 TEST SITE
30 - D5 INSTALLATION, OPERATION, AND MAINTENANCE
30 - D6 ANALYSIS OF SAMPLES
30 - D7 TEST METHODOLOGY
30 - D7.1 Test loading
30 - D7.2 Period of evaluation
31 - D7.3 Sampling
31 - D7.4.1 Continuous process
31 - D7.4.2 Batch process
31 - D7.4 Testing
31 - D8 USAGE DURING TEST PERIOD
31 - D9 METEOROLOGICAL DATA
31 - D10 REPORTING
32 - D11 ASSESSMENT
33 - APPENDIX E - DESIGN FACTORS AND INFORMATION
33 - E1 SCOPE
33 - E2 RESIDENTIAL USE
33 - E3 NON-RESIDENTIAL/PUBLIC FACILITIES
33 - E3.1 Design capacity
33 - E3.2 Numbers of toilet pedestals
34 - E4 SEPARATION OF URINE
34 - E5 REMOVAL OF EXCESS MOISTURE
34 - E5.1 Ventilation
34 - E5.2 Bulking material
34 - E6 CONDITIONS FOR COMPOSTING
35 - E7 Composting design requirements
36 - APPENIX F - DEMONSTRATING MANUFACTURING COMPLIANCE WITH AS/NZS 1546.2
36 - F1 SCOPE
36 - F2 RELEVANCE
36 - F3 PRODUCT CERTIFICATION
36 - F4 DEFINITIONS
36 - F4.1 Batch release test
36 - F4.2 Production batch
36 - F4.3 Sample
36 - F4.4 Sampling plan
36 - F4.5 Test batch
36 - F4.6 Type testing
37 - F5 TESTING
37 - F5.1 Type testing
37 - F5.2 Batch release testing
37 - F5.3 Retesting
40 - APPENDIX G - PROCEDURE FOR MONITORING
40 - G1 SCOPE
40 - G2 CONTROL SYSTEM
40 - G2.1 Pre-qualification
40 - G2.2 Licensing
40 - G3 MONITORING SYSTEMS
42 - APPENDIX H - OPERATION AND MAINTENANCE
42 - H1 SCOPE
42 - H2 TRAINING/EDUCATION
42 - H2.1 General
42 - H2.2 Responsibility
42 - H2.3 Education material
43 - H2.4 Replacement material
43 - H3 RISK
43 - H4 INFORMATION FOR SERVICE OPERATORS
45 - APPENDIX J - RISK MANAGEMENT PLAN
45 - J1 SCOPE
45 - J2 GENERAL
45 - J3 CONTENTS
46 - J4 ASSESSMENT OF RISK
47 - APPENDIX K - SAFE HANDLING OF SOLID AND LIQUID END PRODUCTS
47 - K1 GENERAL
47 - K2 PRINCIPLE
47 - K2.1 Reduce risk of inhalation
47 - K2.2 Reduce risk of ingestion
47 - K2.3 Reduce risk of abrasion

AS/NZS 1546.2 aims to: 1. Provide a set of performance statements that form a base against which any waterless composting toilet, conventional or innovative, may be assessed. 2. Provide manufacturers of waterless composting toilets with a performance evaluation test that will confirm the conditions under which it will function best (this will enable certification bodies to check that a product conforms to the Standard). 3. Ensure that the operation and maintenance of a waterless composting toilet is done in a safe manner that meets basic health requirements given that it involves the removal of composted or partially composted material.

Originated in Australia and New Zealand as AS/NZS 1546.2:2001.
Revised and reissued as AS/NZS 1546.2:2008.