AS/NZS 2312.1:2014
Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings - Part 1: Paint coatings
Provides guidance for architects, engineers, builders, the surface coating industry and users of protective services in general, on paint coating systems for the protection of steel work against corrosion. The designer can choose from a selection of systems based on expected service life to first maintenance for various environments. The systems recommended herein are based on good industrial practice and usage; however, local knowledge of any corrosion problem should influence the decisions taken. In providing recommendations on up-to-date protection systems, the Committee is aware of the large number of systems used commercially, but, to avoid confusion, has included only a limited range of systems for each type of environment.
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AS/NZS 2312.1:2014 GUIDE TO THE PROTECTION OF STRUCTURAL STEEL AGAINST ATMOSPHERIC CORROSION BY THE USE OF PROTECTIVE...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 NEED FOR CORROSION PROTECTION
1.3 USE OF THIS STANDARD
1.4 REFERENCED DOCUMENTS
1.5 DEFINITIONS
1.5.1 Actual dry film thickness
1.5.2 Corrosivity
1.5.3 Durability
1.5.4 Environment
1.5.5 Inspector
1.5.6 Intermediate coat
1.5.7 Nominal dry film thickness (NDFT)
1.6 DURABILITY CONSIDERATIONS
1.7 WARRANTY CONSIDERATIONS
1.8 DESIGNATION OF PROTECTION SYSTEMS
1.9 HEALTH, SAFETY AND ENVIRONMENTAL PROTECTION
SECTION 2 CLASSIFICATION OF ENVIRONMENTS
2.1 GENERAL
2.2 MICRO-ENVIRONMENTS
2.3 ATMOSPHERIC CORROSIVITY CATEGORIES
2.4 OTHER ENVIRONMENTS
SECTION 3 PLANNING, DESIGN AND FABRICATION FOR CORROSION PROTECTION
3.1 SCOPE AND GENERAL
3.2 PLANNING
3.3 DESIGN
3.3.1 General
3.3.2 Exposure environment
3.3.3 Materials of construction
3.3.4 Major design considerations
3.4 FABRICATION
3.4.1 General
3.4.2 Preparation of welds prior to coating
3.4.3 Sharp edges
3.4.4 Shelling and laminations
3.4.5 Gouges or raised nibs
3.4.6 Responsibility for repair of fabrication defects
3.4.7 Rectification procedures
SECTION 4 SURFACE PREPARATION
4.1 GENERAL
4.2 SURFACE PREPARATION METHODS
4.2.1 Treatment of fabrication defects
4.2.2 Cleaning with solvents or alkaline solutions (see AS 1627.1)
4.2.3 Abrasive blast cleaning (see AS 1627.4)
4.2.4 Hand and power tool cleaning (see AS 1627.2)
4.2.5 Water pressure washing and jetting
4.3 SOLUBLE SALTS
4.4 THE PROTECTION OF STEEL DURING EXTENDED FABRICATION
4.5 RUST CONVERSION
SECTION 5 FACTORS INFLUENCING PAINT COATING SELECTION
5.1 GENERAL
5.2 SUBSTRATE AND SURFACE CONDITION
5.3 ENVIRONMENT
5.4 SYSTEM LIFE
5.5 DESIGN
5.6 SHOP OR SITE APPLICATION
5.7 COLOUR AND APPEARANCE
5.8 APPLICATION METHOD
5.9 CONDITIONS DURING APPLICATION
5.10 SURFACE PREPARATION
5.11 PREVIOUS EXPERIENCE
5.12 MAINTENANCE CONSIDERATIONS
5.13 INSPECTION REQUIREMENTS
5.14 SAFETY AND ENVIRONMENTAL CONSTRAINTS
5.15 COST AND WARRANTY CONSIDERATIONS
SECTION 6 PAINT COATING SYSTEMS FOR CORROSION PROTECTION
6.1 GENERAL
6.2 DURABILITY OF PAINT COATINGS
6.3 COATING SYSTEMS FOR ATMOSPHERIC ENVIRONMENTS
6.4 DRY FILM THICKNESS
SECTION 7 PAINTING AND PAINT APPLICATION METHODS
7.1 GENERAL
7.2 COATING CONTRACTOR QUALIFICATIONS
7.3 PAINT STORAGE
7.4 MIXING AND THINNING OF PAINT
7.5 TYPE AND CONDITION OF THE SUBSTRATE
7.6 PAINTING CONDITIONS
7.7 COATING APPLICATION
7.7.1 General
7.7.2 Pot life
7.7.3 Spray methods
7.7.4 Brush application
7.7.5 Roller application
7.7.6 Post added accelerants
7.8 STANDARD OF WORKMANSHIP
7.9 TIME REQUIREMENTS
7.9.1 Prepared surfaces
7.9.2 Period between coats
7.9.3 Effects of delays during painting
7.9.4 Drying time before handling
7.10 OTHER ASPECTS OF COATING APPLICATION
7.10.1 Paint spreading rate and thickness
7.10.2 Stripe coating
7.10.3 Painting around bolt holes
7.10.4 Repairs to the coating
SECTION 8 MAINTENANCE OF PAINT COATING SYSTEMS
8.1 GENERAL
8.2 INITIAL INSPECTIONS AND ASSESSMENT
8.3 CRITERIA FOR ASSESSING WHEN TO REPAIR
8.4 SURFACE PREPARATION
8.4.1 General
8.4.2 Condition of existing coating system
8.4.3 Surface contamination
8.4.4 Environmental protection
8.4.5 Methods
8.5 REPAINTING
8.5.1 General
8.5.2 Procedure
8.5.3 Records
8.6 REPAIRS AND REPAINTING OF WELDED STRUCTURES
SECTION 9 INSPECTION AND TESTING
9.1 GENERAL
9.2 REQUIREMENTS AND AUTHORITY OF INSPECTORS
9.3 LEVEL OF INSPECTION
9.4 PAINTING PROJECT COMMENCEMENT MEETING
9.5 REFERENCE AREAS
9.6 INSPECTION REQUIREMENTS
9.6.1 General
9.6.2 Initial Inspection
9.6.3 Surface preparation
9.6.4 Paint application
9.6.5 Final inspection
9.7 RECORDS AND INSPECTION REPORT
9.8 GUIDANCE ON THE USE OF TESTING EQUIPMENT
9.8.1 Temperature, relative humidity and dew point
9.8.2 Abrasive cleanliness
9.8.3 Surface cleanliness
9.8.4 Surface profile
9.8.5 Soluble salts
9.8.6 Wet film thickness
9.8.7 Dry film thickness
9.8.8 Film continuity
9.8.9 Degree of cure
9.8.10 Adhesion
SECTION 10 PREPARATION OF COATING SPECIFICATIONS
10.1 GENERAL
10.2 CONTENT OF A SPECIFICATION
10.2.1 Scope of work
10.2.2 Surface preparation
10.2.3 Coating system
10.2.4 Coating materials-detailed stipulations
10.2.5 Application of coatings
10.2.6 Storage, handling and transport arrangements
10.2.7 Repair of welds and damaged areas
10.2.8 Inspection procedure requirements
10.2.9 Warranties
10.2.10 Maintenance painting specifications
APPENDIX A - GUIDANCE ON THE USE OF THIS STANDARD
A1 GENERAL
A2 CHECK LIST FOR THE COATING OF NEW STRUCTURES
A3 CHECK LIST FOR THE MAINTENANCE PAINTING OF EXISTING STRUCTURES
A4 EXAMPLES OF THE USE OF THIS STANDARD
APPENDIX B - FACTORS INFLUENCING CORROSIVITY
B1 GENERAL
B2 ATMOSPHERIC ENVIRONMENTS
B3 FRESH WATER
B4 SEAWATER
B5 SOIL
B6 CHEMICAL AND OTHER SPECIALIZED ENVIRONMENTS
B7 HIGH TEMPERATURE ENVIRONMENTS
APPENDIX C - PAINT COATINGS FOR NON-ATMOSPHERIC AND HOT ENVIRONMENTS
C1 GENERAL
C2 COATING SYSTEMS FOR NON-ATMOSPHERIC ENVIRONMENTS
C3 HEAT RESISTING COATINGS
APPENDIX D - DESCRIPTION OF PAINT TYPES
APPENDIX E - ECONOMICS OF CORROSION PROTECTION
E1 GENERAL
E2 INITIAL COSTS AND ECONOMICS OF PROTECTIVE TREATMENTS
E2.1 Surface preparation
E2.2 Paint application
E2.3 Inspection
E2.4 Paint coverage
E3 ECONOMIC EVALUATION OF PROTECTIVE TREATMENTS
E3.1 General
E3.2 Life cycle costing
E3.3 A simple method of economic evaluation
E3.4 Final evaluation
APPENDIX F - VOLATILE ORGANIC COMPOUNDS (VOCs)
APPENDIX G - TYPICAL CRITERIA FOR SELECTED COATING SPECIFICATIONS
APPENDIX H - POWDER COATINGS AND TAPE WRAPPINGS
H1 POWDER COATINGS
H1.1 General
H1.2 Application of powder coatings
H1.3 Surface preparation
H2 WRAPPING TAPES
INDEX
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References
Guide to the painting of buildings
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AS/NZS 2312.1:2014 GUIDE TO THE PROTECTION OF STRUCTURAL STEEL AGAINST ATMOSPHERIC CORROSION BY THE USE OF PROTECTIVE...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 NEED FOR CORROSION PROTECTION
1.3 USE OF THIS STANDARD
1.4 REFERENCED DOCUMENTS
1.5 DEFINITIONS
1.5.1 Actual dry film thickness
1.5.2 Corrosivity
1.5.3 Durability
1.5.4 Environment
1.5.5 Inspector
1.5.6 Intermediate coat
1.5.7 Nominal dry film thickness (NDFT)
1.6 DURABILITY CONSIDERATIONS
1.7 WARRANTY CONSIDERATIONS
1.8 DESIGNATION OF PROTECTION SYSTEMS
1.9 HEALTH, SAFETY AND ENVIRONMENTAL PROTECTION
SECTION 2 CLASSIFICATION OF ENVIRONMENTS
2.1 GENERAL
2.2 MICRO-ENVIRONMENTS
2.3 ATMOSPHERIC CORROSIVITY CATEGORIES
2.4 OTHER ENVIRONMENTS
SECTION 3 PLANNING, DESIGN AND FABRICATION FOR CORROSION PROTECTION
3.1 SCOPE AND GENERAL
3.2 PLANNING
3.3 DESIGN
3.3.1 General
3.3.2 Exposure environment
3.3.3 Materials of construction
3.3.4 Major design considerations
3.4 FABRICATION
3.4.1 General
3.4.2 Preparation of welds prior to coating
3.4.3 Sharp edges
3.4.4 Shelling and laminations
3.4.5 Gouges or raised nibs
3.4.6 Responsibility for repair of fabrication defects
3.4.7 Rectification procedures
SECTION 4 SURFACE PREPARATION
4.1 GENERAL
4.2 SURFACE PREPARATION METHODS
4.2.1 Treatment of fabrication defects
4.2.2 Cleaning with solvents or alkaline solutions (see AS 1627.1)
4.2.3 Abrasive blast cleaning (see AS 1627.4)
4.2.4 Hand and power tool cleaning (see AS 1627.2)
4.2.5 Water pressure washing and jetting
4.3 SOLUBLE SALTS
4.4 THE PROTECTION OF STEEL DURING EXTENDED FABRICATION
4.5 RUST CONVERSION
SECTION 5 FACTORS INFLUENCING PAINT COATING SELECTION
5.1 GENERAL
5.2 SUBSTRATE AND SURFACE CONDITION
5.3 ENVIRONMENT
5.4 SYSTEM LIFE
5.5 DESIGN
5.6 SHOP OR SITE APPLICATION
5.7 COLOUR AND APPEARANCE
5.8 APPLICATION METHOD
5.9 CONDITIONS DURING APPLICATION
5.10 SURFACE PREPARATION
5.11 PREVIOUS EXPERIENCE
5.12 MAINTENANCE CONSIDERATIONS
5.13 INSPECTION REQUIREMENTS
5.14 SAFETY AND ENVIRONMENTAL CONSTRAINTS
5.15 COST AND WARRANTY CONSIDERATIONS
SECTION 6 PAINT COATING SYSTEMS FOR CORROSION PROTECTION
6.1 GENERAL
6.2 DURABILITY OF PAINT COATINGS
6.3 COATING SYSTEMS FOR ATMOSPHERIC ENVIRONMENTS
6.4 DRY FILM THICKNESS
SECTION 7 PAINTING AND PAINT APPLICATION METHODS
7.1 GENERAL
7.2 COATING CONTRACTOR QUALIFICATIONS
7.3 PAINT STORAGE
7.4 MIXING AND THINNING OF PAINT
7.5 TYPE AND CONDITION OF THE SUBSTRATE
7.6 PAINTING CONDITIONS
7.7 COATING APPLICATION
7.7.1 General
7.7.2 Pot life
7.7.3 Spray methods
7.7.4 Brush application
7.7.5 Roller application
7.7.6 Post added accelerants
7.8 STANDARD OF WORKMANSHIP
7.9 TIME REQUIREMENTS
7.9.1 Prepared surfaces
7.9.2 Period between coats
7.9.3 Effects of delays during painting
7.9.4 Drying time before handling
7.10 OTHER ASPECTS OF COATING APPLICATION
7.10.1 Paint spreading rate and thickness
7.10.2 Stripe coating
7.10.3 Painting around bolt holes
7.10.4 Repairs to the coating
SECTION 8 MAINTENANCE OF PAINT COATING SYSTEMS
8.1 GENERAL
8.2 INITIAL INSPECTIONS AND ASSESSMENT
8.3 CRITERIA FOR ASSESSING WHEN TO REPAIR
8.4 SURFACE PREPARATION
8.4.1 General
8.4.2 Condition of existing coating system
8.4.3 Surface contamination
8.4.4 Environmental protection
8.4.5 Methods
8.5 REPAINTING
8.5.1 General
8.5.2 Procedure
8.5.3 Records
8.6 REPAIRS AND REPAINTING OF WELDED STRUCTURES
SECTION 9 INSPECTION AND TESTING
9.1 GENERAL
9.2 REQUIREMENTS AND AUTHORITY OF INSPECTORS
9.3 LEVEL OF INSPECTION
9.4 PAINTING PROJECT COMMENCEMENT MEETING
9.5 REFERENCE AREAS
9.6 INSPECTION REQUIREMENTS
9.6.1 General
9.6.2 Initial Inspection
9.6.3 Surface preparation
9.6.4 Paint application
9.6.5 Final inspection
9.7 RECORDS AND INSPECTION REPORT
9.8 GUIDANCE ON THE USE OF TESTING EQUIPMENT
9.8.1 Temperature, relative humidity and dew point
9.8.2 Abrasive cleanliness
9.8.3 Surface cleanliness
9.8.4 Surface profile
9.8.5 Soluble salts
9.8.6 Wet film thickness
9.8.7 Dry film thickness
9.8.8 Film continuity
9.8.9 Degree of cure
9.8.10 Adhesion
SECTION 10 PREPARATION OF COATING SPECIFICATIONS
10.1 GENERAL
10.2 CONTENT OF A SPECIFICATION
10.2.1 Scope of work
10.2.2 Surface preparation
10.2.3 Coating system
10.2.4 Coating materials-detailed stipulations
10.2.5 Application of coatings
10.2.6 Storage, handling and transport arrangements
10.2.7 Repair of welds and damaged areas
10.2.8 Inspection procedure requirements
10.2.9 Warranties
10.2.10 Maintenance painting specifications
APPENDIX A - GUIDANCE ON THE USE OF THIS STANDARD
A1 GENERAL
A2 CHECK LIST FOR THE COATING OF NEW STRUCTURES
A3 CHECK LIST FOR THE MAINTENANCE PAINTING OF EXISTING STRUCTURES
A4 EXAMPLES OF THE USE OF THIS STANDARD
APPENDIX B - FACTORS INFLUENCING CORROSIVITY
B1 GENERAL
B2 ATMOSPHERIC ENVIRONMENTS
B3 FRESH WATER
B4 SEAWATER
B5 SOIL
B6 CHEMICAL AND OTHER SPECIALIZED ENVIRONMENTS
B7 HIGH TEMPERATURE ENVIRONMENTS
APPENDIX C - PAINT COATINGS FOR NON-ATMOSPHERIC AND HOT ENVIRONMENTS
C1 GENERAL
C2 COATING SYSTEMS FOR NON-ATMOSPHERIC ENVIRONMENTS
C3 HEAT RESISTING COATINGS
APPENDIX D - DESCRIPTION OF PAINT TYPES
APPENDIX E - ECONOMICS OF CORROSION PROTECTION
E1 GENERAL
E2 INITIAL COSTS AND ECONOMICS OF PROTECTIVE TREATMENTS
E2.1 Surface preparation
E2.2 Paint application
E2.3 Inspection
E2.4 Paint coverage
E3 ECONOMIC EVALUATION OF PROTECTIVE TREATMENTS
E3.1 General
E3.2 Life cycle costing
E3.3 A simple method of economic evaluation
E3.4 Final evaluation
APPENDIX F - VOLATILE ORGANIC COMPOUNDS (VOCs)
APPENDIX G - TYPICAL CRITERIA FOR SELECTED COATING SPECIFICATIONS
APPENDIX H - POWDER COATINGS AND TAPE WRAPPINGS
H1 POWDER COATINGS
H1.1 General
H1.2 Application of powder coatings
H1.3 Surface preparation
H2 WRAPPING TAPES
INDEX
AS/NZS 2312.1:2014
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.