ASTM D887-13(2022) PDF

Overview

ASTM D887-13(2022) - Standard Practices for Sampling Water-Formed Deposits provides comprehensive methodologies for sampling deposits that form in water systems, particularly in boiler tubes and steam turbines. Developed by ASTM International, this widely recognized standard ensures that water-formed deposit samples collected in the field or laboratory are representative, uncontaminated, and suitable for chemical, physical, biological, or radiological analysis. Following ASTM D887 enhances the reliability of deposit analysis, which is crucial for understanding system chemistry, diagnosing corrosion and erosion, and maintaining efficient power plant and industrial operations.

Key Topics

• Comprehensive Sampling Procedures: Covers both field and laboratory methods for collecting and preparing samples of water-formed deposits from tubing in steam generators, heat exchangers, and steam turbine components.
• Types of Deposits: Defines and addresses sampling for various deposit types, including scale, sludge, corrosion products, and biological deposits.
• Representative Sampling: Emphasizes the importance of selecting proper sampling areas and obtaining a sufficient number of samples to achieve results representative of the system as a whole.
• Sample Integrity: Details how to handle, seal, label, and ship deposit samples to maintain their condition before analysis, minimizing contamination or alteration.
• Special Cases: Provides practices for dealing with radioactive deposits, ensuring compliance with health and safety regulations.
• Sample Documentation: Lists the essential background and contextual information that must accompany every sample, such as operating conditions, system history, and sampling procedures.

Applications

ASTM D887’s methodologies are applicable across various industries and facility types, including:

• Power Generation: For monitoring and troubleshooting boilers, heat exchangers, and turbines susceptible to water-formed deposits, enabling early detection of corrosion or operational inefficiencies.
• Industrial Water Treatment: Supports investigations into system failures, facilitates maintenance planning, and informs chemical cleaning decisions.
• Failure Analysis: When equipment exhibits unexpected deterioration or malfunctions, D887 sampling enables thorough root-cause and metallurgical analysis.
• Quality Assurance: During inspections, regularly sampling and analyzing deposits helps document system health and supports regulatory or safety compliance.
• Research and Development: Provides standardized sample collection for research into new materials, corrosion resistance, or improved chemical treatment protocols.

Following ASTM D887 ensures that samples are suited for a variety of analyses, including chemical composition, physical structure, biological content, and radiological assessment, supporting both routine monitoring and forensic investigations.

Related Standards

Several other ASTM standards complement or are frequently referenced alongside ASTM D887 to provide a complete approach to water-formed deposit analysis:

• ASTM D1245: Practice for Examination of Water-Formed Deposits by Chemical Microscopy
• ASTM D2331: Practices for Preparation and Preliminary Testing of Water-Formed Deposits
• ASTM D1293: Test Methods for pH of Water
• ASTM D4412: Test Methods for Sulfate-Reducing Bacteria in Water and Water-Formed Deposits
• ASTM D934: Practices for Identification of Crystalline Compounds in Water-Formed Deposits by X-Ray Diffraction
• ASTM D3483: Test Methods for Accumulated Deposition in a Steam Generator Tube

Practical Value

Implementing ASTM D887 sampling practices brings tangible benefits:

• Improved Equipment Lifespan: Early detection of deposit-related problems prevents costly downtime and repairs.
• Accurate Analysis: Standardized sampling methods ensure that subsequent analyses-whether chemical, biological, or radiological-yield actionable insights.
• Regulatory Compliance: Adhering to internationally recognized standards simplifies regulatory reporting and quality audits.
• Enhanced Safety: Proper handling of samples, especially those potentially radioactive, safeguards worker health and environmental integrity.

For anyone tasked with maintaining, investigating, or optimizing industrial water systems, ASTM D887 is an indispensable standard for deposit sampling, leading to better understanding, management, and mitigation of water-formed deposit-related issues.