ASTM D7230-06(2013)

Standard Guide for Evaluating Polymeric Lining Systems for Water Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates

SIGNIFICANCE AND USE
5.1 Safety-related service water system (SWS) components are designed to provide adequate cooling to equipment essential to the safe operation and shutdown of the plant. Linings in these systems are installed to maintain the integrity of the system components by preventing corrosion and erosion of the metal materials of construction. Linings on SWS surfaces upstream of components, including heat exchangers, orifice plates, strainers, and valves, the detachment of which may affect safe-plant operation or shutdown, may be considered safety-related, depending on plant-specific licensing commitments and design bases.  
5.2 The testing presented in this guide is used to provide reasonable assurance that the linings, when properly applied, will be suitable for the intended service by preventing corrosion and erosion for some extended period of time. Additionally, the test data derived allows development of schedules, methods, and techniques for assessing the condition of the lining materials (see Guide D7167). The ultimate objective of the testing is to avoid lining failures that could result in blockage of equipment, such as piping or heat transfer components, preventing the system or component from performing its intended safety function.  
5.3 It is expected that this guide will be used by:  
5.3.1 Lining manufacturers for comparing specific products and systems and to establish a qualification basis for recommended linings and  
5.3.2 End users seeking a consistent design basis for candidate coating systems.  
5.4 In the event of conflict, users of this guide must recognize that the licensee's plant-specific quality assurance program and licensing commitments shall prevail with respect to the selection process for and qualification of CSL III lining materials.  
5.5 Operating experience has shown that the most severe operating conditions with respect to heat exchanger linings occur on pass partitions. A phenomenon known as the “cold wall effect” accelerates mois...
SCOPE
1.1 This guide establishes procedures for evaluating lining system test specimens under simulated operating conditions.  
1.2 Lining systems to be tested in accordance with this guide are intended for use in both new construction and for refurbishing existing systems or components.  
1.3 The lining systems evaluated in accordance with this guide are expected to be applied to metal substrates comprising water-wetted (that is, continuous or intermittent immersion) surfaces in systems that may include:  
1.3.1 Service water piping upstream of safety-related components,  
1.3.2 Service water pump internals (draft tube, volutes, and diffusers),  
1.3.3 Service water heat exchanger channels, pass partitions, tubesheets, end bells, and covers,  
1.3.4 Service water strainers, and  
1.3.5 Refueling water storage tanks and refuel cavity water storage tanks.  
1.4 This guide anticipates that the lining systems to be tested include liquid-grade and paste-grade polymeric materials. Sheet type lining materials, such as rubber, are excluded from the scope of this guide.  
1.5 Because of the specialized nature of these tests and the desire in many cases to simulate to some degree the expected service environment, the creation of a standard practice is not practical. This standard gives guidance in setting up tests and specifies test procedures and reporting requirements that can be followed even with differing materials, specimen preparation methods, and test facilities.  
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.7 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 to determine the appl...

General Information

• Status: Historical
• Publication Date: 30-Jun-2013
• ICS: 23.040.01 - Pipeline components and pipelines in general
• Technical Committee: D33 - Protective Coating and Lining Work for Power Generation Facilities
• Drafting Committee: D33.02 - Service and Material Parameters

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7230 − 06 (Reapproved 2013)
Standard Guide for
Evaluating Polymeric Lining Systems for Water Immersion
in Coating Service Level III Safety-Related Applications on
Metal Substrates
This standard is issued under the fixed designation D7230; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope conversions to SI units that are provided for information only
and are not considered standard.
1.1 This guide establishes procedures for evaluating lining
1.7 This standard does not purport to address all of the
system test specimens under simulated operating conditions.
safety concerns, if any, associated with its use. It is the
1.2 Lining systems to be tested in accordance with this
responsibility of the user of this standard to establish appro-
guide are intended for use in both new construction and for
priate safety and health practices and to determine the
refurbishing existing systems or components.
applicability of regulatory limitations prior to use.
1.3 The lining systems evaluated in accordance with this
guideareexpectedtobeappliedtometalsubstratescomprising 2. Referenced Documents
water-wetted (that is, continuous or intermittent immersion) 2
2.1 ASTM Standards:
surfaces in systems that may include:
A36/A36MSpecification for Carbon Structural Steel
1.3.1 Service water piping upstream of safety-related
C868Test Method for Chemical Resistance of Protective
components,
Linings
1.3.2 Service water pump internals (draft tube, volutes, and
D115Test Methods for Testing Solvent Containing Var-
diffusers),
nishes Used for Electrical Insulation
1.3.3 Service water heat exchanger channels, pass
D714Test Method for Evaluating Degree of Blistering of
partitions, tubesheets, end bells, and covers,
Paints
1.3.4 Service water strainers, and
D2240Test Method for Rubber Property—Durometer Hard-
1.3.5 Refueling water storage tanks and refuel cavity water
ness
storage tanks.
D2583Test Method for Indentation Hardness of Rigid Plas-
tics by Means of a Barcol Impressor
1.4 This guide anticipates that the lining systems to be
D2794Test Method for Resistance of Organic Coatings to
tested include liquid-grade and paste-grade polymeric materi-
the Effects of Rapid Deformation (Impact)
als. Sheet type lining materials, such as rubber, are excluded
D4060Test Method for Abrasion Resistance of Organic
from the scope of this guide.
Coatings by the Taber Abraser
1.5 Because of the specialized nature of these tests and the
D4082Test Method for Effects of Gamma Radiation on
desire in many cases to simulate to some degree the expected
Coatings for Use in Nuclear Power Plants
service environment, the creation of a standard practice is not
D4538Terminology Relating to Protective Coating and
practical. This standard gives guidance in setting up tests and
Lining Work for Power Generation Facilities
specifiestestproceduresandreportingrequirementsthatcanbe
D4541Test Method for Pull-Off Strength of Coatings Using
followed even with differing materials, specimen preparation
Portable Adhesion Testers
methods, and test facilities.
D5139Specification for Sample Preparation for Qualifica-
1.6 The values stated in inch-pound units are to be regarded
tion Testing of Coatings to be Used in Nuclear Power
as standard. The values given in parentheses are mathematical
Plants
D5144Guide for Use of Protective Coating Standards in
Nuclear Power Plants
This guide is under the jurisdiction of ASTM Committee D33 on Protective
Coating and Lining Work for Power Generation Facilities and is the direct
responsibility of Subcommittee D33.02 on Service and Material Parameters. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJuly1,2013.PublishedJuly2013.Originallyapproved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 2006. Last previous edition approved in 2006 as D7230 – 06. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D7230-06R13. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7230 − 06 (2013)
D6677Test Method for Evaluating Adhesion by Knife 3.1.6 liquid-grade, adj—lining material that is liquid when
D7167Guide for Establishing Procedures to Monitor the mixed and applied.
Performance of Safety-Related Coating Service Level III
3.1.6.1 Discussion—Liquid-grade polymeric lining materi-
Lining Systems in an Operating Nuclear Power Plant
als are typically used as prime and finish coats in a lining
E96/E96MTest Methods for Water Vapor Transmission of
system.
Materials
3.1.7 paste-grade, adj—lining material that, when mixed,
G14TestMethodforImpactResistanceofPipelineCoatings
resultsinapaste-likematerialthatisoftenappliedbytrowelor
(Falling Weight Test)
squeegee.
G42Test Method for Cathodic Disbonding of Pipeline
3.1.7.1 Discussion—Paste-grade polymeric lining materials
Coatings Subjected to Elevated Temperatures
are often used as the build coat in a lining system and are
2.2 Federal Standards
always incorporated in a cladding system. In addition to
EPA Method 415.1Total Organic Carbon in Water
imparting thickness and impact resistance, the paste-grade
2.3 NACE International
build coat material has the ability to restore an extensively
RP0394Application, Performance and Quality Control of
corroded surface to a relative smooth condition by filling
Plant-Applied, Fusion Bonded External Pipe Coating
corrosion-induced surface porosity, pits, and depressions.
TM0174Laboratory Methods for the Evaluation of Coating
Materials and Lining Material on Metallic Substrates in
3.1.8 service water, n—that water used to cool power plant
Immersion Service
components or extract heat from systems or components, or
TM0404Offshore Platform Atmospheric and Splash Zone
both.
New Construction Coating System Evaluation
3.1.8.1 Discussion—Cooling/heatextractionisgenerallyac-
complished via heat exchangers, fan coolers, or chillers.
3. Terminology
Service water may be raw water or water chemically treated to
3.1 Definitions of Terms Specific to This Standard:
retard corrosion. Service water systems are distinct and sepa-
3.1.1 In addition to the following terms, general terms
rate from the circulating water system used to extract waste
applicable to this standard are found in Terminology D4538.
heat from the main steam surface condenser.
3.1.2 cladding, n—a thick coating system comprised of a
liquid-grade prime coat, a paste-grade intermediate build coat,
4. Summary of Guide
and a liquid-grade finish coat.
4.1 Theobjectivesofthetestingsetforthinthisguideareto
3.1.2.1 Discussion—This system is typically applied as a
evaluate a CSL III lining system’s ability to:
lining to heat exchanger tubesheets and as a repair material in
localized areas of metal loss (for example, pump impeller
4.1.1 Preventcorrosionanderosionofthemetallicmaterials
cavitation, pipe wall corrosion) to restore surface contour. A of construction and
modified(thatis,thinner)claddingmaybeusedonthewarmer
4.1.2 Remain intact during design basis conditions.
side of heat exchanger pass partitions to prevent “cold wall”
4.2 The Tests Outlined Comprise Two Distinct Phases:
blistering.
4.2.1 Phase 1—Phase 1 includes two primary assessments
3.1.3 Coating Service Level III (CSL III), n—areas outside
and certain additional related physical testing. The Phase 1
the reactor containment where lining (or coating) failure could
tests are considered essential to the objective of developing a
adversely affect the safety function of a safety-related
test database that can be used to rank and otherwise compare
structure, system, or component (SSC).
candidate-lining systems.
3.1.3.1 Discussion—This definition is consistent with that
4.2.1.1 Permeability Testing—Defined thicknesses of liquid
found in Guide D5144.
and paste-grade polymeric lining materials are tested to assess
3.1.4 cold wall effect, n—propensity for a fluid or vapor to
their relative imperviousness.
permeate into/through a lining applied to the warmer side of a
4.2.1.2 Test (Atlas) Cell “Conditioning” Followed by De-
substratethatservesasaboundarybetweenwarmerandcooler
structive Testing—Test specimens representing thinner and
fluids.
thicker film candidate lining systems are “conditioned” by
3.1.5 lining, n—particular type of coating intended for
exposure to test conditions replicating water immersion envi-
protection of substrates from corrosion as a result of continu-
ronments that produce a temperature gradient across the
ous or intermittent fluid immersion.
specimen (that is, “cold wall” conditions). Following
3.1.5.1 Discussion—The normal operating service environ-
conditioning, the test specimens are tested for impact
ments to which linings are subject are aggressive. As such,
resistance, flexibility, adhesion, and hardness.
materialandapplicationprocessparametersarespecializedand
4.2.2 Phase 2—Phase2includesadditionaldestructivetests.
require exacting quality control measures.
Phase 2 testing is intended to provide additional performance
data that can be used to refine the lining selection process. For
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
instance, Phase 1 tests may be used to evaluate a relatively
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
broad array of candidate materials. Once the field of candidate
www.access.gpo.gov.
systems is narrowed via Phase 1 testing, Phase 2 tests can be
Available from NACE International (NACE), 1440 South Creek Dr., Houston,
TX 77084-4906, http://www.nace.org. used to fine-tune the system selection process.
D7230 − 06 (2013)
5. Significance and Use 5.6 Large water-to-water ∆Ts are known to be the most
severe design condition. The test device used to replicate ∆T
5.1 Safety-related service water system (SWS) components
configurations is known as an “Atlas cell.”Atlas cell testing is
are designed to provide adequate cooling to equipment essen-
governed by industry standard test methodologies (Test
tial to the safe operation and shutdown of the plant. Linings in
Method C868 and NACE TM0174). A lining proven suitable
these systems are installed to maintain the integrity of the
forthemostseverehypothesized∆Twouldalsobesuitablefor
system components by preventing corrosion and erosion of the
service on other waterside surfaces.
metal materials of construction. Linings on SWS surfaces
upstream of components, including heat exchangers, orifice
5.7 Plant cooling water varies in composition and tempera-
plates, strainers, and valves, the detachment of which may
tureseasonally.Forpurposesofstandardization,demineralized
affect safe-plant operation or shutdown, may be considered
water is used in Atlas cell exposures rather than raw plant
safety-related, depending on plant-specific licensing commit-
water. It is generally accepted in polymeric coatings technol-
ments and design bases.
ogy that low-conductivity water (deionized or demineralized)
5.2 The testing presented in this guide is used to provide ismoreaggressivewithrespecttoitsabilitytopermeatelinings
reasonable assurance that the linings, when properly applied,
thanrawwater.Thus,stipulatinguseoflow-conductivitywater
will be suitable for the intended service by preventing corro-
as the test medium is considered conservative.
sion and erosion for some extended period of time.
Additionally, the test data derived allows development of
6. Reagents
schedules, methods, and techniques for assessing the condition
6.1 Unless otherwise indicated in the project-specific test
of the lining materials (see Guide D7167). The ultimate
instructions or under a particular test method described here-
objective of the testing is to avoid lining failures that could
inafter:
resultinblockageofequipment,suchaspipingorheattransfer
6.1.1 Reagent water used in conjunction with permeability
components, preventing the system or component from per-
tests and Atlas cell exposures should have a maximum con-
forming its intended safety function.
ductivity of 1.0µ S/cm.
5.3 It is expected that this guide will be used by:
5.3.1 Lining manufacturers for comparing specific products
7. Procedure
and systems and to establish a qualification basis for recom-
mended linings and
7.1 The user of this guide is expected to invoke only those
tests that are applicable. Refer to Table 1. A test specification
5.3.2 End users seeking a consistent design basis for candi-
should be developed to indicate the particular tests to be used.
date coating systems.
The test specification should include details on the lining
5.4 In the event of conflict, users of this guide must
systems to be evaluated.
recognize that the licensee’s plant-specific quality assurance
program and licensing commitments shall prevail with respect
7.2 For plant-specific applications, design and operating
to the selection process for and qualification of CSL III lining
parameters will need to be reviewed. On the basis of that
materials.
review, the site-specific design objectives for testing can be
defined. Test parameters based on water temperatures and∆Ts
5.5 Operating experience has shown that the most severe
more severe than the plant-specific normal and upset condi-
operating conditions with respect to heat exchanger linings
tionsmightalsobeallowed.Thetestspecimenshouldreplicate
occur on pass partitions. A phenomenon known as the “cold
the anticipated plant-specific substrate condition to the extent
wall effect” accelerates moisture permeation through a coating
practicable (for example, new, corroded, etc.).
appliedtothewarmersideofapartitionthatseparatesfluidsat
two different temperatures. The thickness and permeability of
7.3 Steel Test Specimens—Duplicate test specimens should
the lining are key variables affecting the ability of a lining to
be provided fabricated from hot-rolled mild carbon steel
withstand cold wall blistering.
conforming to Specification A36/A36M. Thickness and other
5.5.1 This effect is particularly pronounced when the sepa-
dimensions are stipulated for each specific test referenced
rated fluids are water, though the effect will occur when only
herein.
airisontheotherside,forexample,anoutdoortankfilledwith
7.4 Product Information and Characterization—Each batch
warm liquid.Aheat exchanger pass partition represents geom-
ofeachcomponentoftheliningmaterialstobeusedfortesting
etry uniquely vulnerable to the water-to-water maximized
described herein should be identified and “fingerprinted” by
temperat
...