Petroleum & Refined Oil Product Inspection Services

Petroleum & Refined Oil Product Inspection Services

Handling, transferring, and transporting petroleum products—from crude oil to refined fuels—requires precise volumetric calculations, accurate quality verification, and strict adherence to international safety guidelines. Our Company provides independent third-party petroleum inspection, shore tank gauging, cargo loss control, and sampling supervision for oil majors, refineries, traders, shipowners, and terminal operators worldwide.

Core Operational Scope

1. Shore Tank Gauging & Stock Inventory Verification

Precision Measurement: High-precision manual and automated gauging (ullage/sounding), free water measurement, and temperature determination in shore storage tanks.
Standardized Corrections: Density calculations and volume adjustments using standardized API petroleum measurement tables.
Inventory Reconciliation: Pre-transfer and post-transfer inventory reconciliation for terminal receipt and discharge operations.

2. Tanker Cargo Gauging & Vessel Measurement

Vessel Surveys: Complete vessel cargo tank ullage measurement, free water detection, and wedge formula calculations on crude and product tankers.
VEF Calculations: Calculation of total loaded/discharged cargo volume applying Vessel Experience Factors (VEF).
OBQ / ROB Verification: Measurement of Onboard Quantity (OBQ) prior to loading and Remaining Onboard (ROB) post-discharge.

3. Representative Sampling & Laboratory Coordination

API & ASTM Sampling: Sampling before, during, and after transfer operations compliant with API MPMS Chapter 8 and ASTM D4057 guidelines.
Compartment Sampling: Collection of composite, upper, middle, lower, and bottom samples from shore tanks and vessel compartments.
ISO 17025 Analysis: Dispatch to ISO 17025 accredited laboratories across our network for key quality parameter analysis (flash point, viscosity, sulfur content, water & sediment, density).

4. Cargo Loss Control & Protest Issuance

Volumetric Monitoring: Continuous monitoring throughout loading, transit, and discharge phases to detect volumetric discrepancies or water ingress.
Root-Cause Investigation: Root-cause investigation into physical or measurement losses between shore figures and vessel figures.
Discrepancy Reporting: Immediate issuance of official Letters of Protest to ship masters or terminal representatives in case of short-landing or out-of-spec cargo.

International Standards & Compliance

Petroleum survey procedures executed by Our Company strictly adhere to global energy and petroleum measurement guidelines:

API MPMS (Manual of Petroleum Measurement Standards)
ASTM International Standards (D1298, D4057, D4177)
Energy Institute (EI) IP Guidelines for Petroleum Measurement

Why Choose Our Company? Inspection Capabilities

Feature / Capability	Our Petroleum Services	Client / Commercial Benefit
API & ASTM Standard Compliance	Rigorous adherence across our global field and laboratory operations	Precision calculations fully accepted by financial institutions, customs, and traders
Active Loss Mitigation	Advanced VEF analysis, transit loss monitoring, and reconciliation	Immediate detection of measurement variances to protect financial interest
Global Terminal & STS Coverage	Broad coverage across major ports, ocean terminals, refineries, and offshore STS sites	Rapid surveyor deployment, minimizing laytime and expensive vessel demurrage
Lab Network & Testing	Global network of ISO 17025 accredited testing facilities with rapid turnaround times	High-confidence analytical data for key fuel parameters (sulfur, flash point, density)

Request a Petroleum Inspection

Ensure precise volume determination and cargo quality protection by contacting Our Company’s petroleum survey department for your upcoming transfer operations.