Значение и использование

3.1 This guide is intended as a reference for those concerned with the inspection of industrial coating work. The requirements for inspection should be addressed in all protective coating and lining work specifications. This guide may be used by specification writers when selecting and establishing the inspection requirements for coating and lining specifications. A checklist for use by inspectors in the field is included in Appendix X1.

Область применения

1.1 This guide is intended as an information aid to painting inspectors in carrying out their task efficiently. It includes the key elements of surface preparation, coatings application, and final approval for both field and shop work. The items should be selected that are pertinent to the specification of a particular job.

Note 1: For additional helpful information, refer to the following documents:

Manual of Coating Work for Light-Water Nuclear Power Plant Primary Containment and Other Safety-Related Facilities 2

New Concepts for Coating Protection of Steel Structures3

D16 Terminology for Paint, Related Coatings, Materials, and Applications 4

D4538 Terminology Relating to Protective Coatings and Lining Work for Power Generation Facilities 4

Steel Structures Painting Manual Vol 1 Good Painting Practice 6

Steel Structures Painting Manual Vol 2 Systems and Specifications 6

Manufacturers Specifications and Instructions (made available to the inspector for reference to special requirements for proper application)

Safety Data Sheets (needed to ensure that personnel take necessary precautions in handling hazardous materials). Available from Materials manufacturer.

1.2 Certain industries or owners may require certified inspection personnel. See Guide D4537 for establishing procedures to certify inspectors for coatings work in nuclear facilities.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.5 This guide is arranged in the following order:

 

Section

Referenced Documents

2

 ASTM Standards

2.1

 OSHA Standards

2.2

 Steel Structures Painting Council Publications

2.3

 International Standards Organization (ISO)

2.4

 ASTM Adjuncts

2.6

Significance and Use

3

Preparation for Inspection

4

Surface Preparation Methods and Requirements

5

 Surface Preparation

5.1

 Pictorial Standard D2200

5.1.1

 Factors Affecting Coating Performance

5.2

 Cleanliness

5.2.1

 Mill Scale

5.2.2

 Surface Profile

5.2.3

 Sharp Edges

5.2.4

 Cleaning Procedures

5.3

 Chemical Cleaning

5.3.1

 Solvent Vapor Cleaning

5.3.1.1

 Hand Tool Cleaning

5.3.2

 Power Tool Cleaning

5.3.3

 Power Tool Cleaning to Bare Metal

5.3.4

 Commercial Grade Power Tool Cleaning

5.3.4.4

 Blast Cleaning

5.3.5

 Pressurized Water Cleaning

5.3.6

Cleaning and Preparation of Various Surfaces

5.4

 Steel Surfaces

5.4.1

 Galvanized Surfaces

5.4.2

 Aluminum Surfaces

5.4.3

Precautions in Preparing Unpainted and Previously

 

 Painted Surfaces

5.4.4

Inspection of Surfaces Prior to Field Painting

5.5

 New Construction

5.5.1

 Maintenance Repainting

5.5.2

Coating Storage and Handling

6

 Storage of Coating and Thinner

6.1

 Mixing of Coatings

6.2

 Thinning

6.3

 Initial Samples

6.3.1

 Thinning of Coating

6.3.2

 Sampling of Thinned Coating

6.3.3

 Heating of Coating

6.4

Weather Considerations

7

 Drying

7.1

 Low Temperature

7.2

 High Temperature

7.3

 Moisture

7.4

 Wind

7.5

Coating Application

8

 Residual Contaminants

8.1

 Quality Assurance

8.2

 Film Defects

8.2.1

 Brush Application

8.3

 Spray Application

8.4

 Roller Application

8.5

 Miscellaneous Methods

8.6

 Rate of Application

8.7

Additional Considerations

9

 Ventilation

9.1

 Shopcoat Repair

9.2

 Painting Schedule

9.3

 Film Integrity

9.4

 Recoat Time

9.5

 Coating System Failure

9.6

Inspection Equipment

10

 General

10.1

 Surface Profile Gages

10.1.1

 Adhesion of Existing Coating

10.1.2

 Portable Pull-Off Adhesion Testers

10.1.3

 Field Inspection Equipment

10.2

 Drying and Curing Times

10.2.1

 Thermometers

10.2.1.1

 Relative Humidity and Dew Point

10.2.1.2

 Wet-Film Thickness Gages

10.2.2

 Interchemical Gage

10.2.2.1

 Notched Gage

10.2.2.2

 Dry-Film Thickness Gages

10.2.3

 Nondestructive Film Thickness Gages

10.2.3.1

 Magnetic-Type Gages

10.2.3.2

 Current-Type Gages

10.2.3.3

 Destructive Thickness Gage

10.2.3.4

 Holiday Detectors

10.2.4

Comparison of Surface Preparation

 

 Specifications

Table 1

Comparison of Water Jetting Standards

Table 2

Inspection Checklist

Appendix X1