ASTM D3911-03

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Designation:D3911–03
Standard Test Method for
Evaluating Coatings Used in Light-Water Nuclear Power
Plants at Simulated Design Basis Accident (DBA)
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Conditions
This standard is issued under the fixed designation D 3911; 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.
INTRODUCTION
During a DBAin nuclear power plants, conditions in the reactor containment will be characterized
by elevated temperature and pressure, as well as the presence of a radiation environment. Water
sprays, with or without chemical additives, may be used in the primary containment to suppress the
consequences of the event, to scavenge radioactive products, and to return the containment to
near-ambient pressure and temperature conditions.
1. Scope D 4538 Terminology Relating to Protective Coating and
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Lining Work for Power Generation Facilities
1.1 This test method establishes procedures for evaluating
D 5139 Specification for Sample Preparation for Qualifica-
protective coating systems test specimens under simulated
tion Testing of Coatings to be Used in Nuclear Power
DBA conditions. Included are a description of conditions and
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Plants
apparatus for temperature-pressure testing, and requirements
D 5144 Guide for Use of Protective Coating Standards in
for preparing, irradiating, testing, examining, evaluating, and
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Nuclear Power Plants
documenting the samples.
1.2 The values stated in inch-pound and degrees F units are
3. Terminology
to be regarded as the standard. The SI values given in
3.1 Definitions—Definitions for use with this standard are
parentheses are for information only.
shown in Terminology D 4538 or other applicable standards.
1.3 This standard does not purport to address all of the
3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 blistering—the formation of bubbles in a coating
responsibility of the user of this standard to establish appro-
(paint) film.
priate safety and health practices and determine the applica-
3.2.2 chemical spray—a solution of chemicals, such as
bility of regulatory limitations prior to use.
those contained in Table 1, which could be used during a DBA
2. Referenced Documents to suppress the incident, to scavenge fission products, and to
return the facility to near-ambient pressure and temperature
2.1 ASTM Standards:
conditions.
D 714 Test Method for Evaluating Degree of Blistering of
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3.2.3 coating system—a protective film consisting of one or
Paints
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more coats applied in a predetermined order by prescribed
D 1193 Specification for Reagent Water
methods to a defined substrate.
D 4082 Test Method for Effects of Radiation on Coatings
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3.2.4 coating service Level 1—term used to describe areas
Used in Light-Water Nuclear Power Plants
inside the reactor-containment where coating failure could
adversely affect the operation of post-accident fluid systems
and, thereby, impair safe shutdown.
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This test method is under the jurisdiction of ASTM Committee D33 on
3.2.5 curing—the transformation of a coating or other
ProtectiveCoatingandLiningWorkforPowerGenerationFacilitiesandisthedirect
material into a solid phase or film such as through chemical
responsibility of Subcommittee D33.02 on Service and Material Parameters.
Current edition approved Jan. 10, 2003. Published March 2003. Originally
reaction, heat, evaporation, or hydrolysis.
approved in 1980. Last previous edition approved in 1995 as D 3911 – 95.
3.2.6 design basis accident (DBA)—a generic term for any
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Annual Book of ASTM Standards, Vol 06.01.
3
one of a family of accident conditions which can result from
Annual Book of ASTM Standards, Vol 11.01.
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Annual Book of ASTM Standards, Vol 06.02. postulated events. The more commonly recognized accident
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D3911–03
TABLE 1 Typical Spray Solutions
5.4 The thermocouples and test specimens shall be posi-
Composition Chemical Compound Concentration (in Deionized Water) tioned to avoid direct steam impingement.
5.5 The equipment shall be constructed so as to allow test
A Sodium borate 2000 to 4000 ppm boron
Sodium hydroxide adjust solution to pH 9.0 to 10.0
specimens to be exposed to total immersion, to liquid-vapor
B Boric acid 2000 to 4000 ppm boron
interface, and to spray as appropriate.
Hydrazine 50 ppm unreacted excess
5.6 WARNING: It should be noted that high temperature
Sodium phosphate, dibasic adjust solution pH to 6.8 to 10.0
steam is involved and that appropri
...