Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
D5677-17 – Standard Test Method Technical Guide
📐 System Scope and Operating Parameters
ASTM D5677-17 (Reapproved 2023) establishes the performance requirements for a fiberglass (glass-fiber-reinforced thermosetting-resin) pipe and fittings system designed specifically for below-ground aviation jet turbine fuel lines. The system utilizes an epoxy resin matrix and is assembled using an adhesive bonded joint type. This specification is critical for ensuring long-term structural integrity and fuel compatibility in aircraft refueling infrastructure.
The standard covers piping intended for continuous service up to 150°F (65.6°C) at a maximum operating pressure of 150 psig (1034 kPa). The system must also withstand transient pressure surges of up to 275 psig (1896 kPa). The dimensionless designator NPS has been substituted for traditional nominal diameter designations. All values stated in inch-pound units are regarded as the standard.
📋 Fuel Compatibility: The piping system must be compatible with aviation turbine fuels conforming to Specification D1655 and Military Specification MIL-T-5624 (Grades JP-4, JP-5, and JP-5/JP-8 ST).
| 📐 Parameter | 🔧 Requirement |
|---|---|
| Maximum Operating Temperature | 150°F (65.6°C) |
| Maximum Operating Pressure | 150 psig (1034 kPa) |
| Maximum Surge Pressure | 275 psig (1896 kPa) |
| Installation Environment | Below Ground |
| Joint Assembly Type | Adhesive Bonded |
⚙️ Materials, Referenced Documents, and Classification
The pipe and fittings are constructed from an epoxy resin reinforced with glass fibers. Fittings must conform to Specification D5685 for fiberglass pressure pipe fittings. The machine-made pipe follows the classification structure of D2310 (withdrawn 2017), which provides the historical design basis for the reinforcement schedule. Terminology relating to the materials and system is defined by Terminologies D883 (Plastics) and F412 (Plastic Piping Systems).
Commercial packaging of all components adheres to Practice D3951, ensuring product integrity from the manufacturer to the installation site. The adhesive sealant itself must provide a strong, chemically resistant bond that maintains system integrity under the specified pressure and temperature cycling.
⚠️ Safety Precaution: The standard explicitly states (Section 1.4) that it does not address all safety concerns. Users must establish appropriate safety, health, and environmental practices prior to installation and testing.
| 🟦 Standard / Specification | 📏 Purpose within D5677 |
|---|---|
| D1599 | Short-Term Hydraulic Pressure Failure Resistance |
| D2412 | External Loading Characteristics (Parallel-Plate) |
| D3241 | Thermal Oxidation Stability of Aviation Turbine Fuels |
| D381 | Gum Content in Fuels by Jet Evaporation |
| MIL-T-5624 | Military Specification for Grades JP-4, JP-5, JP-8 |
| D5685 | Fiberglass (Glass-Fiber-Reinforced) Pressure Pipe Fittings |
📊 Performance Testing and Qualification
Product qualification requires a comprehensive testing regimen. Hydraulic pressure resistance is verified using Test Method D1599, while external load-bearing capacity and pipe stiffness are evaluated via the parallel-plate loading method in D2412. Dimensional verification is performed in accordance with Practice D3567 to ensure proper fit and joint integrity.
Fuel compatibility is paramount for aviation safety. The components must not degrade the fuel quality, which is verified through the Thermal Oxidation Stability Test (D3241) and the Gum Content Test (D381). These tests ensure the piping system does not contribute to fuel system deposits or blockages in turbine engines.
💡 International Standard: According to Note 1 of the standard, there is no known ISO equivalent to ASTM D5677. It is a unique North American standard developed specifically for below-grade aviation fueling systems.
❓ Frequently Asked Questions
🔍 What are the exact pressure and temperature limits for this piping system?
The system is rated for a maximum service temperature of 150°F (65.6°C), an operating pressure of 150 psig (1034 kPa), and surge pressures up to 275 psig (1896 kPa).
💡 What joint type is specified in ASTM D5677-17?
The specification explicitly requires an adhesive bonded joint type for joining the fiberglass pipe and fittings.
📌 What jurisdiction covers this standard?
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced Thermosetting Resin Piping Systems and Chemical Equipment.
⚡ What military fuel grades are explicitly referenced?
The standard references MIL-T-5624, which covers Aviation Turbine Fuels Grades JP-4, JP-5, and JP-5/JP-8 ST.