ASTM D8104-17(2023) PDF

Overview

ASTM D8104-17(2023), titled Standard Guide for Determining Coating Qualification Test Data Applicability, provides essential guidance for evaluating the applicability of existing coating qualification test data in nuclear power plant environments. Developed by ASTM International, this standard is crucial for professionals responsible for coatings in both new nuclear construction and refurbishment of existing facilities. It ensures that plant-specific material and process variables are appropriately considered, supporting the effective selection and qualification of protective coating systems for service inside containment structures.

This guide is particularly relevant for evaluating whether existing qualification data-such as those addressing design basis accident (DBA) conditions, chemical and fire resistance, thermal properties, and adhesion-meet the plant’s licensing and performance requirements, or if new or additional qualification testing is necessary.

Key Topics

• Applicability of Existing Test Data The standard outlines variables and criteria to determine if existing qualification test data are relevant to a specific plant’s requirements.

  • Material compatibility, surface preparation, application parameters, and test performance criteria are evaluated.
  • Special considerations are required for new-build plants, small modular reactors, or refurbished systems with different design or operational features.

• Evaluation Variables Key variables include:

  • Substrate type and cleanliness: Only data from appropriately prepared and similar substrates (e.g., carbon steel, stainless steel, concrete) are considered valid.
  • Coating system configuration: Number of coats, material types, thinning agents, colors, accelerators, and application methods must match qualified configurations.
  • Test Parameters: Simulation of DBA temperature and pressure profiles, spray chemistry, irradiation, and other specific exposures should represent or exceed the plant’s requirements.
  • Coating Properties: Attributes like fire resistance, chemical resistance, adhesion, thermal conductivity, specific heat, emissivity, abrasion resistance, and overall performance under stress are all assessed.

• Assessment Process

  • Systematic steps are defined for reviewing and filtering existing test reports:
    1. Identify relevant qualification tests.
    2. Compare evaluation variables and performance criteria to plant-specific standards.
    3. Document any differences, determine their significance, and identify any need for further testing or restrictions.

• Reporting Requirements

  • Comprehensive documentation is required, listing all considered variables, describing differences, and evaluating their impact.
  • The final report should meet the plant’s Quality control and licensing requirements.

Applications

ASTM D8104-17(2023) is used in the following contexts:

• Nuclear Plant Construction: Ensures protective coatings specified and installed in newly-built facilities meet all conformance requirements for safety and reliability.
• Refurbishment and Repairs: Used during renovation or repair projects to qualify new coatings or validate existing coating systems when changing products or suppliers.
• Containment Area Integrity: Applies to both concrete and metal substrates within critical containment areas, directly contributing to plant safety and regulatory compliance.
• Specialized Expertise: Guidance is intended for use by, or under supervision of, knowledgeable coating technology professionals (such as those qualified under ASTM D7108).

Related Standards

Several other standards complement ASTM D8104-17(2023), providing detailed methods and definitions relevant to coating qualification:

• ASTM D3911: Test Method for Evaluating Coatings under Simulated DBA Conditions
• ASTM D4082: Test Method for Effects of Gamma Radiation on Coatings
• ASTM D4060: Test Method for Abrasion Resistance of Organic Coatings
• ASTM D4258, D4259, D4260: Surface preparation and cleaning practices for coatings
• ASTM D4541: Test Method for Pull-Off Strength of Coatings
• ASTM E84: Test Method for Surface Burning Characteristics (Fire Resistance)
• ASTM D5144: Guide for Protective Coating Standards in Nuclear Power Plants
• ASTM D7108: Guide for Qualifications of Nuclear Coatings Specialists
• ANSI N101.2, US NRC Regulatory Guide 1.54: Additional regulatory references for nuclear coatings

By following ASTM D8104-17(2023), nuclear plant operators can ensure that coating qualification is based on robust, applicable test data, improving containment safety, regulatory adherence, and operational performance.