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D4025-18 – Standard Test Method Technical Guide
📋 Scope and Key Requirements
This practice, designated as D4025-18, specifies the manner in which results of examination and analysis of deposits formed from water for subsurface injection are to be reported. It covers inorganic, organic, and biological constituents, differing from practices like D933 that focus solely on inorganics. All analyses must comply with ASTM test methods unless otherwise specified, with SI units as the standard. Users are responsible for addressing safety, health, environmental concerns, and regulatory limitations.
📝 Sample History and Reporting Guidelines
The report must include comprehensive sample history as outlined in Section 4. Information should be supplied by the submitter and include company name, location, sampling date and time, sample number, equipment details, precise removal location, operating temperature and pressure, water treatment type, system conditions contributing to deposition, deposit appearance before removal, sampling method, contamination notes, preservation methods, and field test results.
| 🟦 Information Required | 📐 Description |
|---|---|
| Company Name | Name of company supplying the sample |
| Location | Plant, facility, and well location |
| Date and Time | Date and time of sampling |
| Equipment | Name and designation of equipment from which sample was removed |
| Operating Conditions | Temperature and pressure of water or brine at deposit location |
| Treatment Applied | Type of treatment applied to the water that formed the deposit |
🔬 Referenced Standards and Analytical Methods
This practice references several ASTM standards to ensure consistency in examination and analysis. These include D887 for sampling water-formed deposits, D932 for filamentous iron bacteria, D933 for reporting results, D1129 for terminology, D4412 for sulfate-reducing bacteria, and E29 for significant digits. Adherence to these standards promotes reliability and uniformity in reporting.
| 📘 Standard Reference | 🎯 Purpose |
|---|---|
| D887 | Practices for Sampling Water-Formed Deposits |
| D932 | Practice for Filamentous Iron Bacteria in Water and Water-Formed Deposits |
| D933 | Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits |
| D1129 | Terminology Relating to Water |
| D4412 | Test Methods for Sulfate-Reducing Bacteria in Water and Water-Formed Deposits |
| E29 | Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
💡 Tip: Include organic and biological materials in reports as required by D4025, unlike the inorganic-only focus of Practice D933. This ensures comprehensive characterization for subsurface injection applications.
⚠️ Warning: Always review and apply appropriate safety, health, and environmental practices as per Section 1.4. Regulatory limitations may apply prior to use of this standard.
❓ Frequently Asked Questions
🔍 What is the primary purpose of ASTM D4025-18?
To specify the reporting of examination and analysis results for deposits formed from water for subsurface injection, covering inorganic, organic, and biological constituents.
💡 How should sample history be documented?
Include details such as company name, location, sampling date/time, equipment, operating conditions, treatment applied, and sampling methods as outlined in Section 4 of the standard.
⚡ What units are used in this standard?
SI units are regarded as standard; no other units are included in the practice.
📌 What are the key referenced standards?
Key standards include D887 (sampling), D932 (iron bacteria), D933 (reporting), D1129 (terminology), D4412 (sulfate-reducing bacteria), and E29 (significant digits) for consistent analysis and reporting.