Standard Test Method for
Effects of Gamma Radiation on Coatings for Use in LightWater Nuclear Power Plants1
This standard is issued under the fixed designation D 4082; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers a standard procedure for evaluating the lifetime radiation tolerance of coatings to be used in
nuclear power plants. This test method is applicable to Coating
Service Levels I and II.
2. Referenced Documents
2.1 ASTM Standards:
D 659 Test Method of Evaluating Degree of Chalking of
Exterior Paints2
D 660 Test Method for Evaluating Degree of Checking of
Exterior Paints3
D 661 Test Method for Evaluating Degree of Cracking of
Exterior Paints3
D 714 Test Method for Evaluating Degree of Blistering of
Paints3
D 772 Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints3
D 5139 Specification for Sample Preparation for Qualification Testing of Coatings to be Used in Nuclear Power
Plants4
3. Significance and Use
3.1 Variations can occur in surface preparation, application,
and curing of coating materials. They may affect the performance of a coating system exposed to radiation when considered in conjunction with applicable engineered safety requirements. This test method is designed to provide a uniform test
to assess the suitability of coatings, used in nuclear power
facilities, under continuous radiation exposure for the projected
40-year lifetime of the facilities, including radiation during a
DBA. Specific plant radiation exposure may exceed or be less
than the amount specified in 6.2 of this standard. The gamma
dose used may exceed the actual anticipated plant gamma dose
in order to account for expected beta exposure as well.
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