Detailed Introduction to Great Lakes Fire-Resistant Hydraulic Fluid

Great Lakes Fire-Resistant Hydraulic Fluid is a high-performance phosphate ester-based fire-resistant hydraulic oil produced by Great Lakes Chemical Inc. (USA) with Great Lakes Chemical (Beijing) Co., Ltd. as the domestic supplier. Its core component is high-quality triaryl phosphate derived from xylenol fractions, specifically designed for turbine electro-hydraulic control systems (EHC). It boasts advantages such as a high autoignition temperature, excellent oxidation stability, and outstanding fire-resistant properties, making it suitable for high-temperature, high-pressure, and high fire-risk scenarios.

I. Core Characteristics and Technical Parameters

(I) Core Advantages

1. Ultimate Fire Resistance: With an autoignition temperature of 545℃ (per ASTM D92 standard) and a maximum temperature resistance of 700℃, it complies with ISO 12922 (Type HFDR) and ASTM 4293 standards. It can effectively prevent fires caused by oil leakage contacting high-temperature surfaces, adapting to high fire-risk environments.

2. Excellent Physicochemical Stability: It exhibits superior oxidation stability, with the acid number strictly controlled at 0.04 mgKOH/g (per ISO 6619 standard). This effectively prevents the decomposition of phosphate esters when contaminated by water, significantly extending the service life. It also has strong adaptability to a wide temperature range, maintaining good fluidity in low-temperature environments and stable performance at high temperatures.

3. Outstanding System Compatibility: Foaming tendency, air release property, and demulsibility have been precisely regulated to fully meet the specifications of turbine manufacturers and adapt to high-precision servo valves. It is compatible with various engineering materials, ensuring stable system operation.

(II) Key Technical Parameters (with Standard References)

(III) Compatibility Instructions

• Compatible Sealing Materials: Silicone, polytetrafluoroethylene (PTFE), fluororubber, etc.

• Incompatible Materials: Neoprene, natural rubber, butyl rubber, EPDM rubber, polystyrene.

• Prohibited Mixing: Water-glycol and emulsifiable hydraulic systems.

• Compatible Materials and Coatings: Carbon steel, polyethylene, polypropylene, Teflon.

II. Application Fields and Industry Standards

(I) Core Application Scenarios

1. Power Industry: Electro-hydraulic control systems of turbine units in thermal power plants and nuclear power plants (including various systems using high-precision servo valves). It has been widely adopted in nearly 700 power plants and over 1,400 units in China.

2. Industrial Manufacturing: Hydraulic systems in steel mills exposed to high temperatures, gas turbines, metallurgy, coal mines, and other high-temperature and high-pressure environments, serving as fire-resistant hydraulic oil and fire-resistant lubricant.

3. Other Scenarios: Various hydraulic systems requiring fire-resistant performance, especially high-risk scenarios where oil leakage or pipeline rupture may cause oil to contact high-temperature surfaces.

(II) Certifications and Compliance Standards

• Chinese Standards: DL/T 571-2014, DL/T 433-2015

• International Standards: ISO 12922 (Type HFDR), ASTM 4293, ASTM D92, ASTM D5682-18

• Other Specifications: Meets the technical requirements of all major turbine manufacturers; complies with the chemical catalog requirements of countries/regions such as AICS, IECSC, DSL, EINECS, ENCS, KECI, PICCS, and TSCA.

III. Usage and Maintenance Guidelines

(I) Storage and Operation Specifications

1. Storage Conditions: Use specialized containers (barges, drums, tank trucks, rail tank cars), keep tightly sealed, and store in a cool, well-ventilated place. Containers and related equipment must be grounded and bonded to prevent electrostatic accumulation.

2. Transportation and Loading/Unloading: Loading, unloading, and transportation shall be conducted at room temperature with normal pressure. Avoid co-storage and co-transportation with mineral oil and water-glycol hydraulic oil to prevent contamination.

3. Operation Requirements: Use specialized equipment for regeneration and purification (such as diatomaceous earth filters). Sealing materials must meet the requirement of an expansion rate <15%. Avoid direct skin contact and prevent slipping hazards caused by spills and leaks.

(II) Maintenance Cycle and Monitoring Indicators

1. Regular Maintenance: Replace adsorbents every 3-6 months; conduct continuous regeneration and purification using specialized equipment to avoid performance impacts from contaminants.

2. Key Monitoring Indicators: Regularly test the acid number, particle size, moisture content, viscosity, cleanliness, chlorine content, etc., to ensure all parameters meet standard requirements and guarantee stable system operation.