ASTM D5499-94(1999)
(Test Method)Standard Test Methods for Heat Resistance of Polymer Linings for Flue Gas Desulfurization Systems
Standard Test Methods for Heat Resistance of Polymer Linings for Flue Gas Desulfurization Systems
SCOPE
1.1 This test method is intended to evaluate the resistance of polymer linings applied to carbon steel substrates to elevated temperatures. Two separate methods are included as follows: Test Method A Continuous elevated temperature exposure, and Test Method B Cycling elevated temperature exposure.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
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Designation:D5499–94 (Reapproved 1999)
Standard Test Methods for
Heat Resistance of Polymer Linings for Flue Gas
Desulfurization Systems
This standard is issued under the fixed designation D 5499; 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 2.2 Steel Structures Painting Council Standards (SSPC) :
SSPC Vis 1–89 Visual Standard
1.1 This test method is intended to evaluate the resistance of
SSPC No. SP5 Blast Cleaning to White Metal
polymer linings applied to carbon steel substrates to elevated
SSPC PA-2 Measurement of Dry Paint Thickness with
temperatures. Two separate methods are included as follows:
Magnetic Gauges
Test Method A Continuous elevated temperature exposure,
and
3. Significance and Use
Test Method B Cycling elevated temperature exposure.
3.1 The results obtained by these test methods can be used
1.2 The values stated in inch-pound units are to be regarded
in combination with other test methods for the selection of a
as the standard. The values given in parentheses are for
lining in flue gas desulfurization (FGD) systems.
information only.
3.2 These methods are intended to evaluate effects of heat
1.3 This standard does not purport to address all of the
alone upon a lining system as applied to a carbon steel
safety concerns, if any, associated with its use. It is the
substrate. These methods do not produce the thermal gradient
responsibility of the user of this standard to establish appro-
that may exist in actual applications.Actual lining performance
priate safety and health practices and determine the applica-
may also be effected by concurrent physical mechanical or
bility of regulatory limitations prior to use.
chemical effects.
2. Referenced Documents 3.3 These methods evaluate major failure modes of linings
applied to square test panels.
2.1 ASTM Standards:
3.4 The recommended test temperatures of 200°F (93°F)
A 36/A 36M Specification for Carbon Structural Steel
and 350°F (177°C) are based on typical maximum operating
D 660 Test Method for Evaluating Degree of Checking of
zone temperatures in flue gas desulfurizations systems. Other
Exterior Paints
temperatures may be evaluated as desired.
D 661 Test Method for Evaluating Degree of Cracking of
Exterior Paints
4. Apparatus
D 714 Test Method for Evaluating Degree of Blistering of
3 4.1 Forced-airCirculationOven,capableofmaintainingthe
Paints
selected test temperature within 4°F (2°C).
D 772 Test Method for Evaluating Degree of Flaking (Scal-
3 4.2 A Rack or Stand to support the test panels vertically in
ing) of Exterior Paints
the oven while maintaining a distance of at least 1 in. (25 mm)
D 1474 Test Method for Indentation Hardness of Organic
3 between the panels and between the panels and oven walls.
Coatings
D 4417 Test Method for Field Measurement of Surface
5. Test Specimens
Profile of Blast Cleaned Steel
5.1 Substrate:
D 4541 Method for Pull-Off Strength of Coatings Using
4 5.1.1 Test panels shall be new commercial quality carbon
Portable Adhesion Testers
steel conforming to SpecificationA 36/A36M. Panels shall be
a minimum of ⁄4in. (6 mm) thick, and 8 in. (200 mm) square.
5.1.2 These test panels are large enough and rigid enough
for linings and coatings up to 0.25-in. (6-mm) thick. For
This test method is under the jurisdiction of ASTM Committee D-33 on
thicker linings, the test panels shall be at least 32 times the
ProtectiveCoatingandLiningWorkforPowerGenerationFacilitiesandisthedirect
lining thickness in each direction.
responsibility of Subcommittee D33.09 on Protective Linings for FGD Systems.
Current edition approved Jan. 15, 1994. Published March 1994.
Annual Book of ASTM Standards, Vol 01.04.
3 5
Annual Book of ASTM Standards, Vol 06.01. Available from Steel Structures Painting Council (SSPC), 4516 Henry St.,
Annual Book of ASTM Standards, Vol 06.02. Pittsburgh, PA 15213.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5499
5.1.3 One test panel shall be prepared for each test tempera- 6.4 Test Method B:
ture, for each method (Test Method A or Test Method B), in 6.4.1 Place the panels in the oven and evaluate as in 6.3 for
addition to a control panel, which shall be maintained at Test Method A with the following difference:
laboratory conditions without elevated temperature exposure. 6.4.1.1 Remove the panels from the oven once daily such
5.2 Preparation: that the exposure time in the oven for each daily cycle is
5.2.1 Prepare one side of each panel in accordance with 16 6 ⁄2 h.
SSPC No. SP5 to the degree of cleanliness represented in 6.4.1.2 Condition the panels for4hina vertical position
SSPC Vis 1–89. Clean, new, angular abrasive shall be used. with a minimum of 1 in. (2.5 cm) at a temperature of 73 6 4°F
The surface profile shall be as recommended by the lining (23 6 2°C).
manufacturer. Determine and record the average profile depth 6.4.1.3 Optionally, the panels may be left in the oven during
in accordance with Test Method D 4417, Test Method A using the weekend.
a visual surface profile comparator or Test Method B, using a 6.4.1.4 Evaluate the panel in accordance with Section 7 and
tape replica.
record results.
5.2.2 Apply the lining to the prepared surface of the test 6.4.1.5 Terminate the test after 28 daily cycles.
panels in a manner as closely simulating field application as
possible and as prescribed by the manufacturer’s latest techni-
7. Panel Evaluation
cal bulletin. Record the manufacturer
...
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