CHIANG RAI – Provincial energy authorities in northern Thailand launched unexpected fuel quality inspections on Tuesday along the busy Eastern Bypass road in Chiang Rai. Provincial Energy Officer Parasak Ngamsompak led the inspection team to verify that retail service stations strictly sell compliant fuels to local drivers.
Mr. Parasak partnered with Ratchapol Ngamkrabuan, director of the National Broadcasting Services of Thailand Chiang Rai, to monitor major PTT and PT stations. The field team inspected fuel dispensers directly to reassure consumers that local service stations maintain honest commercial practices and standard safety standards.
Key Takeaways
- On-Site Station Audits: Chiang Rai energy inspectors audited PTT and PT fuel stations along the Eastern Bypass to confirm consumer safety and product accuracy.
- Visual Color Standards: Standard B7 diesel displays a clear yellow tint, while higher-blend B20 diesel shows an unmistakable red color to prevent fuel mix-ups.
- Public Station Access: Motorists and fleet operators can check verified distribution stations nationwide through an online database published by energy regulators.
Checking Color Standards for Diesel Fuels
Inspectors focused their technical examination on the physical appearance of both B7 and B20 diesel fuels pumped from retail storage tanks. Under formal regulations issued by the Department of Energy Business, standard regular diesel must maintain a transparent yellow tint. In contrast, biodiesel blend B20 requires an artificial red dye that distinguishes it clearly from other commercial fuel varieties.
Government regulators use distinct color codes strictly as an operational marker to prevent accidental mixing between different petroleum products at the pump. Department officials emphasized that these mandated dyes do not alter fuel performance or reduce mechanical engine efficiency during daily highway driving. The simple color visual provides pump operators and drivers with an instantaneous verification method before fueling vehicles.
During field testing, inspectors collect fuel samples in transparent glass cylinders to observe clarity under natural daylight. Certified high-grade diesel must always look clear, free of cloudiness, and completely devoid of suspended dirt particles or bottom sediment. When field samples show discoloration or cloudy liquids, energy technicians dispatch the fuel to certified state laboratories for comprehensive chemical analysis.
Protecting Consumers and Expanding Fuel Transparency
The Chiang Rai Provincial Energy Office conducts these continuous inspections to stop unlawful fuel adulteration and protect motorists from mechanical engine harm. Selling substandard diesel damages vehicle fuel injectors and burns customer trust in regional petroleum supply chains. Regular on-site checks guarantee fair commerce and help local businesses protect commercial transport fleets across the province.
Meanwhile, transport companies and individual motorists can check certified retail stations before setting out on long road trips. The Department of Energy Business maintains an updated directory of authorized pumps on its official portal. Drivers can easily find certified suppliers through the verified B20 service station list to plan reliable, trouble-free fueling stops throughout northern Thailand.
