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

Standard No.

ASTM D7230-06(2013)

Release Date

2006

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7230-06(2021)

Latest

ASTM D7230-06(2021)

Scope

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 moisture permeation through a coating applied to the warmer side of a partition that separates fluids at two different temperatures. The thickness and permeability of the lining are key variables affecting the ability of a lining to withstand cold wall blistering.

5.5.1 This effect is particularly pronounced when the separated fluids are water, though the effect will occur when only air is on the other side, for example, an outdoor tank filled with warm liquid. A heat exchanger pass partition represents geometry uniquely vulnerable to the water-to-water maximized temperature differentials (ΔTs) that drive the cold wall effect.

5.5.2 Pass partitions separate relatively cold incoming cooling water from the discharge water warmed by the heat exchanger's thermal duty. Improperly designed coatings will exhibit moisture permeation to the substrate accelerated by the cold-wall effect. Many instances of premature pass partition warm-side blistering have been noted in the nuclear industry. Such degradation has also been seen on lined cover plate and channel barrel segments that reflect water-to-air configurations.

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ASTM D7230-06(2013) Referenced Document

• ASTM A36/A36M Standard Specification for Carbon Structural Steel
• ASTM C868 Standard Test Method for Chemical Resistance of Protective Linings
• ASTM D115 Standard Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation
• ASTM D2240 Standard Test Method for Properties of Rubber &8212; Durometer Hardness*， 2024-04-20 Update
• ASTM D2583 Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor
• ASTM D2794 Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
• ASTM D4060 Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
• ASTM D4082 Standard Test Method for Effects of Gamma Radiation on Coatings for Use in Light-Water Nuclear Power Plants
• ASTM D4538 Standard Terminology Relating to Protective Coating and Lining Work for Power Generation Facilities
• ASTM D4541 Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers
• ASTM D5139 Standard Specification for Sample Preparation for Qualification Testing of Coatings to be Used in Nuclear Power Plants
• ASTM D5144 Standard Guide for Use of Protective Coating Standards in Nuclear Power Plants*， 2024-04-20 Update
• ASTM D6677 Standard Test Method for Evaluating Adhesion by Knife
• ASTM D714 Standard Test Method for Evaluating Degree of Blistering of Paints
• ASTM D7167 Standard Guide for Establishing Procedures to Monitor the Performance of Safety-Related Coating Service Level III Lining Systems in an Operating Nuclear Power Plant
• ASTM E96/E96M Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials
• ASTM G14 Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
• ASTM G42 Standard Test Method for Cathodic Disbonding of Pipeline Coatings Subjected to Elevated Temperatures

ASTM D7230-06(2013) history

• 2021 ASTM D7230-06(2021) Standard Guide for Evaluating Polymeric Lining Systems for Water Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates
• 2006 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
• 2006 ASTM D7230-06 Standard Guide for Evaluating Polymeric Lining Systems for Water Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates