ASTM D4227-05(2023)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4227 − 05 (Reapproved 2023)
Standard Practice for
Qualification of Coating Applicators for Application of
Coatings to Concrete Surfaces
This standard is issued under the fixed designation D4227; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.1.1 coating applicator, n—an individual who has worked
in the painting trade sufficiently long enough to master the use
1.1 This practice provides a standard qualifying method for
of all applicable tools and the materials being applied.
coating applicators to verify their proficiency and ability to
2.1.2 governing documents, n—technical specifications,
attain the required quality for application of specified coatings
jobsite procedures, and reference documents.
to concrete surfaces including those in safety-related areas in a
nuclear facility.
2.1.3 qualifying agents, n—the designated representatives of
the owner or of the coating organization, or both, who have
1.2 Variations or simplifications of the practice set forth
sufficient experience in the practical application and evaluation
herein may be appropriate for special coating work such as
of coating applied to concrete surfaces.
maintenance. It is not the intent of this practice to mandate a
singular basis for all qualifications.
3. Application of Coatings
1.3 Evaluation of the coating applicator being qualified in
3.1 This practice requires the coating applicator to apply the
accordance with this practice, shall be by qualified agents as
specified coating in conformance to the governing documents
specified in 4.1. Reports shall be prepared as specified in
to a test area similar to that detailed in Fig. 1 and Fig. 2. A
Section 5, and qualification as specified in Section 6.
physical test area may be selected by the owner/representative.
1.4 It is the intent of this practice to judge only the ability of
The test area shall simulate job conditions and acceptance
the coating applicator to apply specified coatings with the
criteria shall be the specification requirement.
proper tools and equipment.
3.1.1 Ceiling Section—Beginning at the wall line, one 5 ft
1.5 The values stated in inch-pound units are to be regarded
by 5 ft (1.5 m by 1.5 m) coating.
as the standard. The values given in parentheses are for
3.1.2 Wall Section—Beginning at the floor line, one 5 ft by
information only.
5 ft (1.5 m by 1.5 m) coating.
3.1.3 Floor Section—Beginning at the wall line and con-
1.6 This standard does not purport to address all of the
necting with the wall section, one 5 ft by 5 ft (1.5 m by 1.5 m)
safety concerns, if any, associated with its use. It is the
coating.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.2 This practice requires the coating applicator perform the
mine the applicability of regulatory limitations prior to use.
application using the proper technique and application equip-
1.7 This international standard was developed in accor-
ment consistent with the governing documents.
dance with internationally recognized principles on standard-
3.3 The surfaces of the concrete test area shall be prepared
ization established in the Decision on Principles for the
in accordance with the governing documents.
Development of International Standards, Guides and Recom-
3.4 The coating applicator shall demonstrate the ability to
mendations issued by the World Trade Organization Technical
apply the specified coating to a uniform dry film thickness in
Barriers to Trade (TBT) Committee.
accordance with the governing documents, as evaluated by the
2. Terminology
qualifying agents.
2.1 Definitions: 3.5 When desired by the owner, one of the test surfaces may
include embedded steel.
3.6 If a coating system specified requires multiple coats,
This practice is under the jurisdiction of ASTM Committee D33 on Protective
treat each coat as a separate application, allowing a specified
Coating and Lining Work for Power Generation Facilities and is the direct
responsibility of Subcommittee D33.05 on Application and Surface Preparation. drying time before applying each succeeding coat.
Current edition approved April 1, 2023. Published May 2017. Originally
3.7 The coating applicator shall be provided with the
approved in 1983. Last previous edition approved in 2017 as D4227 – 05 (2017).
DOI: 10.1520/D4227-05R23. following:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D4227 − 05 (2023)
4.4 The qualifying agents shall take approximately 16
wet-film thickness readings on the test areas. These readings
shall be recorded as specified in Section 5. The wet-film
thickness readings shall be used to verify the specified dry-film
thickness requirements and uniformity of application. The
number and location of readings shall be as indicated in Fig. 3.
4.5 The coating applicator and the qualifying agents shall
understand the required dry-film thickness range requirements
FIG. 1 Concrete Ceiling Test Area
of the governing documents before any coatings are applied.
4.6 Qualifying agents shall inspect the finished surface to
verify that it conforms to the requirements of the governing
documents. A description of the appearance of the completed
applied coating shall be recorded on the form shown in Fig. 4.
5. Report
5.1 The qualifying agents shall use a report form similar to
that in Fig. 4 to record wet-film thickness readings specified in
4.4 and the appearance of the completed coating surface as
specified in 4.6.
5.2 The qualifying agents and coating applicator shall sign
the report form.
FIG. 2 Concrete Wall and Floor Test Area
5.3 The generation of documentation and maintenance of
records shall be as delineated in the applicable project docu-
ments.
3.7.1 Information regarding the specified coating
6. Initial Qualification
material(s), including wet and dry film thickness required, and
6.1 The qualifying agen
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