ASTM D7872-13(2022)

Overview

ASTM D7872-13(2022): Standard Test Method for Determining the Concentration of Pipeline Drag Reducer Additive in Aviation Turbine Fuels describes a laboratory procedure for measuring the presence of high molecular weight polymers, specifically pipeline drag reducer additives (DRA), in aviation turbine fuel. DRAs are commonly used to increase throughput or reduce energy consumption in multiproduct pipelines. However, jet fuels themselves should not contain these additives. Accidental DRA contamination-due to improper batching or human error-can negatively impact critical performance attributes, such as atomization and spray angle, affecting aircraft safety at high altitudes. This standard provides a sensitive and reliable method for confirming that DRA contamination in aviation turbine fuels remains at safe, sub-100 µg/L levels.

Key Topics

• Detection of Pipeline Drag Reducer Additive (DRA): This method enables laboratories to identify and quantify DRA contamination in jet fuels down to 72 µg/L, enhancing aviation fuel safety protocols.
• Measurement Approach: The test uses rotary evaporation to concentrate jet fuel samples, followed by gel permeation chromatography (GPC) with refractive index detection to separate and quantify high molecular weight polymers.
• Applicability and Limitations: While D7872 reliably indicates the total concentration of high molecular weight polymers, it cannot distinguish between different polymer types. Any polymer in the sample, not just DRA, may cause a positive result, requiring further analysis for confirmation.
• Safety Considerations: The procedure may involve the use of mercury-containing equipment. Users must follow strict safety protocols and be aware of regulatory restrictions regarding mercury.

Applications

• Pipeline Quality Control: The method is essential for fuel suppliers and pipeline operators to ensure that aviation turbine fuels transferred through multiproduct pipelines remain free from unacceptable DRA contamination, protecting both operational integrity and aviation safety.
• Laboratory Analysis: Accredited fuel testing laboratories can apply the technique for routine monitoring and certification of jet fuel batches prior to their release for use in aircraft.
• Incident Investigation: In cases of suspected cross-contamination, the method allows for detailed forensic analysis to identify and assess the extent of DRA presence, supporting root cause analysis and corrective actions.

Related Standards

• ASTM D4057 - Practice for Manual Sampling of Petroleum and Petroleum Products: This standard provides procedures for collecting representative fuel samples, foundational for ensuring accurate D7872 testing.
• ASTM D4177 - Practice for Automatic Sampling of Petroleum and Petroleum Products: Guidance on automated, reliable sample collection, particularly suited for continuous pipeline operations.
• CRC Report No. 642: A key technical reference exploring the impact of pipeline DRAs on jet fuel performance, underpinning the significance of D7872 implementation in the aviation industry.

ASTM D7872-13(2022) supports fuel quality assurance programs by delivering reliable DRA quantification, helping stakeholders comply with industry regulations and maintain the highest aviation fuel safety standards. For organizations handling aviation turbine fuel, adherence to this test method is an integral part of contamination control and maintaining airworthiness.

Relevant keywords: drag reducer additive, DRA, aviation turbine fuel, jet fuel contamination, ASTM D7872, fuel quality control, gel permeation chromatography, pipeline fuel additives, aviation fuel safety, laboratory test method.