1、 Background of flash point test

In the power industry, flash point testing of oil products is required before the commissioning of new transformers, reactors, and other equipment, as well as after major equipment repairs. During the operation of the equipment, it is necessary to conduct periodic inspections of the oil products. The main purpose is to prevent and detect the presence of light fractions in oil products through flash point testing, thereby determining the risk of fire in oil products and ensuring the safe operation of equipment.

2、 Facing traditional issues

In the early stage, the commonly used flash point testing method in the power industry was the traditional Binsky Martin closed cup method, but this traditional method has the following disadvantages, which have always troubled the testing personnel. The disadvantages of traditional flash point determination methods include: 1. large sample size, and heavy workload for sampling and cleaning. High energy consumption. Due to the large sample size, there is a higher risk of fire. During the experiment, a large amount of volatile high-temperature oil vapor will be generated and diffuse throughout the laboratory, posing potential harm to the health of the testing personnel. 2. Without a cooling system, most high-temperature oil samples after testing are naturally cooled, resulting in a long testing cycle and a risk of high-temperature burns. 3. Low security. There are certain safety hazards in the external ignition system. Traditional methods usually use gas sources or electric ignition, which cannot avoid open flames. Causing fire hazards in the oil laboratory. 4. For samples with very low levels of combustible volatile components, it is usually impossible to test the flash point value. Causing the test to fail.

3、 New standards for the power industry

In October 2014, the National Energy Administration officially released the flash point testing standard DL/T1354-2014 "Determination of Closed Flash Point of Electric Power Oil by Micro normally Closed Method" applicable to the power industry, which was officially implemented in March 2015. This standard provides a new method basis for flash point testing in the power industry. This standard specifies the basic requirements for determining the closed flash point of electric power oil using the trace normally closed method. This standard applies to transformer oil, turbine oil, or other oil samples with a flash point of 40 ℃ -250 ℃.