Ameer Randolph
In North Carolina, the Fuel Quality Program is responsible for enforcing diesel fuel quality standards. The program has eleven field inspectors positioned across the state who conduct routine inspections at retail locations, respond to requests for assistance from the public, and investigate complaints regarding poor fuel quality. Inspectors check for contamination, verify labeling, and collect samples for submission to the central laboratory in Raleigh for further analysis. The Standards Division, a regulatory agency, also plays a role in enforcing fuel quality standards and ensuring consumer safety and equity in North Carolina's marketplaces. Additionally, vehicle emissions and safety inspections are required annually for certain vehicles registered in specific counties within the state.
| Characteristics | Values |
|---|---|
| Agency responsible for enforcing fuel quality standards | Standards Division, a regulatory agency |
| Location of the Standards Division home office | Steve Troxler Agricultural Sciences Center, Raleigh, NC |
| Types of fuel | Motor fuel (gasoline and diesel fuel), heating fuel (kerosene and fuel oil), and motor oil |
| Role of inspectors | Conduct routine inspections, respond to requests for assistance, investigate complaints, collect samples for submission to the central laboratory |
| Number of field inspectors | Eleven |
| Areas of focus during routine inspections | Labeling on fuel dispensers, flashpoint of diesel and kerosene products, presence of water and sediment, and more |
| Consumer complaints | Over 200 per year regarding fuel quality at retail locations |
| Complaint process | Call the laboratory at 984-236-4770 or report online, providing fuel type and contact information |
| Emission inspection requirements | Annual OBD "emissions" inspection for newer vehicles, safety inspection for older vehicles, diesel-powered vehicles, or alternative fuel vehicles |
| Window tinting requirements | Must be checked during a North Carolina safety inspection to ensure they meet state specifications |
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What You'll Learn
The Fuel Quality Program
In North Carolina, the Fuel Quality Program is responsible for enforcing motor fuel (gasoline and diesel fuel) quality standards, heating fuel (kerosene and fuel oil) quality standards, and motor oil quality standards. The program has eleven field inspectors positioned across the state in designated territories, each equipped with a mobile testing laboratory.
The inspectors conduct routine inspections at retail locations within their territories, aiming to inspect every station at least once a year. These inspections are unannounced, and inspectors test the fuel on-site. They respond to requests for assistance from the public and industry and investigate consumer complaints regarding fuel quality. The most common complaints include fuel contaminated with water or sediment, cross-contamination between fuels, gasoline below octane, and gasoline containing excessive ethanol.
During routine inspections, inspectors focus on three main areas:
- They check the flashpoint of all diesel and kerosene products offered for sale, using a manual flashpoint unit. The flashpoint is crucial as it indicates the temperature at which the vapors above a liquid can support combustion when introduced to a flame. This test ensures that the fuel is safe to use and does not contain lower-boiling fuels like gasoline, which can cause engine damage or fires if present in diesel or kerosene.
- Inspectors visually inspect gasoline samples and storage tanks for phase separation. According to North Carolina code, the presence of phase separation in a storage tank is grounds for the closure of the dispensed fuel product.
- They verify that the fuel is clear and bright at ambient temperature and does not contain water or sediment. Water is the most significant concern for consumers, as it can lead to poor performance and potential engine failure. Sediment is also a growing concern, especially with the increasing use of high-pressure fuel systems in diesel engines.
In addition to these routine inspections, inspectors collect weekly samples from retail locations for submission to the central laboratory in Raleigh for further analysis.
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Field inspectors
In North Carolina, the Fuel Quality Program is responsible for enforcing motor fuel quality standards, including those for diesel fuel. The program relies on eleven field inspectors who are positioned across the state in designated territories and who each have a mobile testing laboratory.
During routine inspections, inspectors check the flashpoint of all diesel and kerosene products offered for sale using a manual flashpoint unit. They verify that the fuel dispensed is clear and bright at ambient temperature and does not contain water or sediment, as these contaminants can result in poor performance and even engine failure. Inspectors also routinely check the labeling on fuel dispensers to verify that they clearly identify the product being purchased, including the registered brand name, grade of fuel, and any required additional labeling for blended or dyed fuels.
In addition to the work of field inspectors, North Carolina also requires periodic emissions inspections for diesel-powered vehicles. Diesel vehicles older than the current model year are required to undergo an annual safety inspection, which includes a visual check for tampering of emissions components.
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Consumer complaints
In North Carolina, the Fuel Quality Program is responsible for enforcing motor fuel (gasoline and diesel fuel) quality standards, heating fuel (kerosene and fuel oil) quality standards, and motor oil quality standards. The program responds to requests for assistance from both the general public and industry within the state.
The program investigates consumer complaints regarding the quality of fuels sold at retail locations within the state. Common complaints include fuel contaminated with water or sediment, cross-contamination between fuels (e.g., gasoline contamination in diesel fuel), gasoline being below octane, and gasoline containing excessive ethanol.
If you believe you have received "bad" or contaminated fuel and wish to file a complaint, you should contact the Fuel Quality Program as soon as possible. You can either call the laboratory at 984-236-4770 or report your complaint online. Be sure to provide the following information:
- Type of fuel (gasoline, diesel, kerosene, etc.)
- Location of the purchase
- Date and time of the purchase
- Any relevant receipts or documentation
Once a complaint has been filed, inspectors will visit the site and perform the following actions, depending on the nature of the complaint:
- Inspect the storage tanks for contamination
- Collect samples of the fuel for laboratory analysis
- Review the station's delivery and maintenance records
The inspection information will be summarized in a complaint investigation report, which will be made available to you and other interested parties upon the investigation's completion. If the inspector identifies products failing to meet quality specifications, they will be officially closed through a Notice of Violation. These products will remain unavailable until remediation is complete, and the fuel quality meets the required specifications.
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Testing methods
In North Carolina, the Standards Division is a regulatory agency that enforces motor fuel quality standards, including those for diesel fuel. The Fuel Quality Program, which falls under the Standards Division, is specifically responsible for enforcing diesel fuel quality standards. The program has eleven field inspectors positioned across the state who conduct routine inspections and respond to requests for assistance from the public and industry. These inspectors are equipped with mobile testing laboratories and collect weekly samples for submission to the central laboratory in Raleigh for analysis.
Testing diesel fuel quality involves assessing various parameters to ensure efficient engine performance, minimize environmental impact, and extend equipment lifespan. Here are some common testing methods:
- Cetane Number Testing: The cetane number measures the ignition quality of diesel fuel during compression. It indicates how smoothly the engine will operate, with higher numbers resulting in easier cold starts, reduced noise, and lower emissions. The ASTM D613 standard is used to determine the cetane number.
- Sulfur Content Analysis: Sulfur content significantly impacts emissions control, engine lubrication, and after-treatment systems. Regulations, such as the EPA's limit of 15 ppm since 2007, aim to reduce sulfur emissions and curb air pollution. Sulfur content is measured in parts per million (ppm) to meet environmental standards and optimize engine efficiency.
- Water Content Testing: Water content in diesel fuel can lead to bacterial growth, corrosion, and fuel unsuitability. The Karl Fischer titration method is a rapid and accurate way to determine water content, not only in fuel analysis but also in various other industries.
- Particulate Testing: Particulates in diesel fuel can be caused by scale, rust, or outside contamination. Testing involves filtering a known volume of the sample through a pre-weighed filter, drying it, and then re-weighing to find the weight of the captured particulates. High levels of particulate matter can damage or block fuel systems.
- Microbial Testing: Microbial growth in fuel tanks can lead to fouling or the production of biofilms that clog filters. Testing for microbes involves pipetting diesel samples onto different media, incubating them, and then testing for bacteria, yeast, and moulds.
- Visual Inspection: The appearance of diesel fuel can indicate its quality. Darker diesel may suggest degradation, which could be due to biodegradation caused by bacteria, oxidation, or contamination. A hazy appearance or a visible water phase at the bottom of the sample can indicate water contamination.
- Cloud Point Measurement: This test measures the temperature at which haze forms in the fuel, indicating the precipitation of wax crystals. Poor cloud point measurements can lead to plugged fuel filters or engine shutdown.
- Corrosivity Testing: A copper strip is placed in a fuel sample for a set time and temperature. The quality of the strip after exposure is compared to industry standards to determine the corrosivity of the fuel.
- Distillation and Residue Analysis: A small fuel sample is distilled to recover most of the sample, and the residue is heated to a high temperature. After cooling, the residue is weighed to measure carbon levels, which can indicate potential combustion chamber deposits.
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Enforcement
In North Carolina, the Standards Division is responsible for enforcing the state's Weights and Measures Act, the Gasoline and Oil Inspection Law, and the LP-Gas Inspection Law. This includes enforcing motor fuel quality standards for gasoline and diesel fuel, heating fuel quality standards for kerosene and fuel oil, and motor oil quality standards.
The Fuel Quality Program, a part of the Standards Division, is specifically tasked with enforcing these fuel quality standards. The program has eleven field inspectors positioned across the state who conduct routine inspections at retail locations, respond to requests for assistance from the public and industry, and investigate consumer complaints regarding fuel quality. These inspectors are equipped with mobile testing laboratories and perform on-site tests to ensure compliance with quality standards.
The inspectors conduct unannounced routine inspections within their designated territories, aiming to inspect each station at least once a year. During these inspections, they verify the labeling on fuel dispensers to ensure that consumers can clearly identify the product they are purchasing. They also check for any contamination in the fuel, including water, sediment, or cross-contamination between different types of fuels. For diesel fuel specifically, inspectors use a manual flashpoint unit to check the flashpoint of the product, ensuring it meets the required safety standards.
In addition to routine inspections, the Fuel Quality Program responds to consumer complaints about fuel quality. On average, the program investigates over 200 consumer complaints per year regarding fuel quality at retail locations. Consumers can file a complaint by calling the laboratory or submitting an online report, providing details such as the type of fuel and their contact information. Once a complaint is received, an inspector is assigned to investigate, collecting samples for testing and inspecting storage tanks for contamination. If a product fails to meet the quality specifications, the inspector will issue a Notice of Violation and may suspend sales until the issue is resolved.
Beyond fuel quality, North Carolina also has vehicle emissions inspection requirements. For certain newer vehicles registered in specific counties, an annual "emissions" inspection and safety/tamper inspection are mandated. Diesel-powered vehicles that are older than the current model year are subject to a safety inspection, which includes a visual check for tampering with emissions components. Additionally, vehicles with tinted windows must undergo an additional inspection to ensure compliance with state specifications, for a small extra charge.
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Frequently asked questions
The Standards Division, a regulatory agency, enforces the North Carolina Weights and Measures Act, the Gasoline and Oil Inspection Law, and the LP-Gas Inspection Law. The Fuel Quality Program enforces motor fuel quality standards, including diesel fuel.
Inspectors conduct routine, unannounced inspections at retail locations across the state. They visually inspect diesel fuel samples and storage tanks for the presence of contaminants such as water and sediment. They also check the flashpoint of diesel fuel using a manual flashpoint unit.
Inspectors aim to inspect each station at least once a year. They also respond to requests for assistance and investigate consumer complaints regarding fuel quality.
You can report a concern about diesel fuel quality by calling the laboratory at 984-236-4770 or submitting a complaint online. You will need to provide information about the type of fuel and your contact details.
In certain counties, diesel vehicles are subject to annual safety inspections, which include a visual check for tampering of emissions components. Diesel vehicles with after-factory window tinting must also undergo an additional inspection to ensure compliance with state specifications.
