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Oil refinery and processing byproducts inspection is a comprehensive quality control process performed at various stages of the logistics chain. It significantly reduces trade risks associated with the delivery or receipt of cargo that does not meet agreed specifications, volumes, or lacks the complete set of supporting documents required for import/export operations of petroleum byproducts.

CISS GROUP provides professional inspection services for oil refinery and processing byproducts to major oil producers and international trading companies. Inspections are carried out at intermediate storage facilities, manufacturing plants, and ports across the globe.

The complexity of oil refinery byproducts inspection lies in the multicomponent nature of these mixtures, which vary in chemical structure, phase composition, and physicochemical properties. Each transport unit containing petroleum byproducts must be marked with a stencil or stamp resistant to water and petroleum products. If such marking is not feasible, a durable label must be affixed to the container, indicating the product name and date of manufacture. Transportation labels must reflect the cargo’s hazard classification, and each batch must be accompanied by a certificate of quality.

CISS GROUP’s accredited inspectors and laboratory technicians perform inspections at any point in the supply chain with full compliance to international standards.

The main stages of oil refinery/processing byproducts inspection:

Incoming/Outgoing inspection

This inspection is conducted during the delivery of byproducts to storage tanks, ship or barge tanks, tank trucks, rail cars, port tanks, or while exporting from factory warehouses. CISS GROUP inspectors assess the condition of storage areas for suitability, verify the cargo's integrity and purity, and check for contamination or foreign odors. In the case of packaging in drums, cartons, or paper bags, the inspector verifies the absence of moisture damage and, if agreed, conducts random container openings for sampling.

Cleanliness inspection of containers and vessel holds before loading

This involves a thorough visual inspection of containers and cargo holds to ensure cleanliness and compliance with transport requirements. Inspectors check internal surfaces, seals, locking mechanisms, hinges, and door fasteners to confirm integrity and suitability for transporting petroleum byproducts.

Visual supervision and sampling during loading

During the loading process, CISS GROUP inspectors supervise the operation, monitor temperature conditions, and record gross and net weights. A visual assessment of cargo quality is performed, and samples are taken in line with international sampling protocols. Composite samples are prepared, and containers or holds are sealed upon completion. All findings are documented and accessible to the client via real-time reporting. Services are available 24/7.

Laboratory testing of product quality

CISS GROUP conducts laboratory analysis of petroleum byproducts exclusively in accredited laboratories in accordance with internationally recognized standards. Tests typically include parameters such as fractional composition, density, viscosity, average boiling point, moisture content, flash point, ignition temperature, presence of unsaturated compounds, and chemical group composition of bitumen.

Photo and video documentation

Each inspection stage is supported by photo and video evidence, timestamped for verification. A comprehensive visual report is provided upon completion of the inspection, offering full transparency of the process.

Issuance of inspection certificates

Following the inspection, a final certificate or detailed report is issued. Each document includes a unique QR code that links directly to a secure CISS GROUP webpage, where PDF copies are stored. All certificates are protected by digital cryptographic signatures, ensuring authenticity and security. These digitally signed documents are often required by banks during trade financing procedures such as letters of credit.

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