Solution for Monitoring Flammable and Explosive Gases in NGPG Aviation Coal Oil Tank Area

1、 Background introduction

Aviation kerosene, as a flammable liquid, can easily form explosive mixtures when its volatile gas mixes with air, posing a risk of leakage during transportation, storage, and use. Once leaked, the concentration of kerosene gas in the air reaches the explosive limit（When exposed to open flames, static electricity, or high temperatures (0.6%~3.7% by volume), it may cause explosions or fires. Therefore, implementing flammable and explosive gas monitoring in aviation coal oil tank areas is the core link to ensure safety.

2、 Layout of monitoring points

ØTank top and breathing valve: Monitor the concentration of volatile vapors to prevent excessive accumulation.

ØPipeline connections and valves: Focus on detecting areas prone to leakage such as flanges and welds.

ØPump area and loading/unloading platform: monitor the dynamic sealing points and steam release during operation.

ØTank area perimeter: Focus on monitoring the release of gases around the tank area.

3、 Equipment selection and integration

A.The NGPG fixed aviation kerosene detector uses our company's specially designed sensor for aviation kerosene, which can be calibrated with isobutane standard gas according to the JJG693-2011 verification regulation, or can be tested on-site with liquid aviation kerosene to obtain an alarm value of about 50% LEL. This detector supports 24-hour online monitoring, with a secondary alarm function that can be linked to an alarm or exhaust system. It has high sensitivity for detecting aviation kerosene;

B.NGPG fixed aviation kerosene detector passes intrinsic safety inspection（ExiaIICT6Ga）+Explosion proof（ExdbIICT6Gb）Double explosion-proof certification and intrinsic safety certificationExiaIIIn the CT6Ga explosion-proof certification, detailed intrinsic safety parameters have been provided for the power supply end, digital signal end, and analog signal end;

C.The NGPG fixed aviation kerosene detector comes standard with a LCD Chinese display, which can be calibrated for zero point and standard gas through a remote control or buttons; Another set of three wire 4-20mA signal output, one set of RS485 signal output, and one set of passive single pole double throw relay output are standard configuration;

4、 Data processing and warning

A.Real time concentration display: The monitoring terminal synchronously displays the concentration value of leaked aviation kerosene.

B.Threshold alarm: Set level one（10%LEL）、 Level 2 (25% LEL) alarm threshold, linked with sound and light alarm.

C.Trend analysis: predict leakage risk based on historical data.

D.Emergency linkage: linkage with fire pump, foam pump, emergency shut-off valve and other equipment to ensure timely response.

5、 Maintenance and Calibration

Regular calibration: Use standard gas to calibrate sensors every quarter, reducing annual data drift67%.

Anti corrosion treatment:The NGPG fixed aviation kerosene detector shell is made of ADC12 aluminum alloy material casting, and the air chamber is made of 6061 aluminum alloy processing. The entire machine shell has strong corrosion resistance. The internal PCB circuit board is coated with three proof paint,Has good resistance to high and low temperatures; After curing, it forms a transparent protective film with insulation, moisture resistance, leakage resistance, shock resistance, dust resistance, corrosion resistance, and aging resistance propertiesExtend the service life.