AS 2809.4-2001

1 - AS 2809.4-2001 ROAD TANK VEHICLES FOR DANGEROUS GOODS - TANKERS FOR TOXIC AND CORROSIVE CARGOES
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 NEW DESIGNS AND INNOVATIONS
6 - 1.4 INTERPRETATIONS
6 - 1.5 REFERENCED DOCUMENTS
7 - 1.6 DEFINITIONS
7 - 1.7 ULLAGE FOR TANKS OR CONTAINERS EXCEEDING 8600 L
8 - SECTION 2 TANKS OF TYPES 1, 2 AND 3
8 - 2.1 APPLICATION
8 - 2.2 TANK DESIGN AND CONSTRUCTION
8 - 2.2.1 Design criteria
8 - 2.2.2 Design pressure
8 - 2.2.3 Materials
8 - 2.2.4 Lining
9 - 2.2.5 Baffles
9 - 2.2.6 Manhole
9 - 2.2.7 Valve protection
9 - 2.3 VALVES AND FITTINGS
9 - 2.3.1 Shut-off valves
9 - 2.3.2 Pressure relief devices
9 - 2.3.3 Outlet connection
9 - 2.3.4 Piping
10 - 2.4 ADDITIONAL REQUIREMENTS FOR HIGHER HAZARDS
10 - 2.4.1 Application
10 - 2.4.2 Piping
10 - 2.4.3 Pumping equipment
10 - 2.4.4 Location of tank openings
10 - 2.4.5 Tank openings
11 - SECTION 3 TANKS OF TYPES 4 AND 5
11 - 3.1 APPLICATION
11 - 3.2 MATERIALS
11 - 3.2.1 Standards
11 - 3.2.2 Chemical resistance
11 - 3.2.3 Lining
11 - 3.3 TANK DESIGN AND CONSTRUCTION
11 - 3.3.1 Design of tank and supports
12 - 3.3.2 Tank shape
12 - 3.3.3 Stiffening of heads, bulkheads and baffles
13 - 3.3.4 Circumferential reinforcement
15 - 3.3.5 Baffles
15 - 3.3.6 Distribution of loads
15 - 3.3.7 Separation of liquids
15 - 3.3.8 Enclosed air spaces
16 - 3.3.9 Component attachment
16 - 3.3.10 Roll-over protection
17 - 3.3.11 Welding
17 - 3.4 MANHOLES, VALVES AND VENTS
17 - 3.4.1 General
17 - 3.4.2 Manholes
18 - 3.4.3 Valves
18 - 3.4.4 Provision of vents
18 - 3.4.5 Top openings
18 - 3.5 PIPEWORK AND PIPE FITTINGS
18 - 3.5.1 Suitability
18 - 3.5.2 Provisions for movement
18 - 3.5.3 Fail-safe provisions
18 - 3.6 PUMPS
18 - 3.6.1 Suitability
19 - 3.6.2 Prevention of overpressure
19 - 3.7 PUMP DRIVES
19 - 3.7.1 Protection
19 - 3.7.2 Shielding of pump shaft
19 - 3.7.3 Location of controls
19 - 3.8 ELECTRIC CABLES AND ELECTRICAL FITTINGS
19 - 3.9 TESTING
19 - 3.9.1 Tanks
19 - 3.9.2 Hatch assembly
19 - 3.9.3 Piping
20 - 3.9.4 Inspection and testing of hoses
20 - 3.10 MARKING
21 - SECTION 4 TANK TESTING AND MAINTENANCE PROCEDURES
21 - 4.1 GENERAL PRECAUTIONS
21 - 4.2 ENTRY INTO TANK
21 - 4.3 PURGING OPERATIONS
22 - 4.4 TANK REPAIRS OR MODIFICATION
22 - 4.5 REGULAR TESTING AND MAINTENANCE
22 - 4.5.1 Precautions prior to work
22 - 4.5.2 Hatches, vents valves
22 - 4.5.3 Pressure-vacuum vents
22 - 4.5.4 Corrosion testing
22 - 4.5.5 Records
22 - 4.5.6 Tank vehicle servicing and repair
23 - 4.5.7 Tank vehicle breakdown
23 - 4.5.8 Safe work procedure

Specifies the requirements that are particularly applicable to road tankers for the transport of liquids that are toxic or corrosive or both. The requirements are complementary to those general requirements necessary to comply with AS 2809.1-1999.

This Standard specifies requirements for the design and construction of tankers for the transport of cargo which is normally liquid, and which is toxic or corrosive. It is complementary to AS 2809.1.NOTE: Five alternative types of cargo tanks are described. The ADG Code will specify which of them must be used for a particular cargo. Where it is desired to transport a product not listed in the ADG Code, the Authority should be consulted. Regulations may forbid the transport of certain dangerous goods in bulk, or may limit the quantity, or may require specific approval beforehand.

First published as AS 2809.4-1986.
Second edition 2001.