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A precision leak detector certified by EX ensures the safe application of hydrogen energy
Date: 2024-08-14Read: 2
A precision leak detector certified by EX ensures the safe application of hydrogen energy
With the increasing demand for energy that meets sustainable development requirements, hydrogen energy is becoming a revolutionary solution in many industries. However,Flammability of hydrogen gasWhether used as a fuel for automobiles or as an energy carrier in existing natural gas infrastructureNew technologies and methods are needed to ensure the safe use of energy, and leak detection technology is an important part of it.
Different energy industries require instruments with different levels of safety certification
For a long time,The natural gas and petrochemical industriesleak detectionWe have been using detection equipment that can be used in potentially hazardous areasThese instruments usually have intrinsic safety explosion-proof protection, which means that the circuit design of the instrument can prevent the risk of fire in any situation, even in the event of equipment failure.
According to the different target gases, vapors, or liquids, instruments require different classifications in order to achieve the same safety level under the same environmental conditions.And the classification information must be clearly labeled on the instrument label.
For example, leak detection in environments with occasional methane (CH4) leaks only requires the use of ATEX gas category IIA and equipment protection level (EPL) Gb detectors, which are suitable for Zone 1 and Zone 2. Equivalent to the United Statesclassification systemClass D gases as specified in the regulations.
The situation of a mixture of hydrogen and natural gas is different.
Ensuring safe hydrogen operation poses challenges
Hydrogen has two important characteristics that are significantly different from methane: the minimum ignition energy (16 times lower) and the combustible concentration range (nearly 6 times wider). This makesHydrogen is more easily ignited by sparks and is more likely to reach flammable concentrations.
According to ISO 80079-20-1,Instruments for detecting mixtures with a hydrogen content exceeding 25 Vol% must meet at least ATEX level of gas category IIBAlthough the standard does not specify the limit values for mixtures classified as Class IIC gases, recent research suggests that the IIC limit should be between 70-75%, and the IIB limit may need to be lowered. This will increase the management of gas company instruments andStandard Operating ProcedureThe complexity.
According to various conditions and requirements in the power grid,Some testing instruments may be prohibited due to inappropriate ATEX levelsuseThe risk of accidents caused by human error will increase. Therefore,Using equipment with ATEX rating to meet future stricter requirements for hydrogen is the best way to reduce internal program complexity and ensure safety.
Yingfukang Precision Testing Instrument has passed the highest safety certification
IRwin from Yingfukang ® Methane leak detector and Extrude ® The design of hydrogen leak detectors meets the highest safety level.They areintrinsically safeThe product meets the highest requirements of ATEX for Zone 0 and IIC (subsystems: Class I, Div 1, Groups B, C, and D). This means,It is very safe to use them in environments with continuous, prolonged, or frequent explosive gases.
IRwin ® methaneleak detector
Extrima ® Hydrogen leak detector
They can alsoUsed in environments where 100% hydrogen may be present, such as power grid hydrogen refueling points or hydrogen storage tanksThat is to say, these two instruments can meet all application requirements without being limited by whether the working gas is methane or a mixture of methane and hydrogen.
In addition, IRwin and ExtinmaduyouSensor technology has good single selectivity for each detected gas category, that isWill not be disturbed by different mixing ratios of methane and hydrogenThis also makes them reliable and applicable under all conditions.
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