LPG Cargo Survey | Technical Inspection Guide

LPG Cargo Survey Overview

LPG cargo surveys are independent technical assessments carried out to verify cargo condition, quantity, quality, and handling procedures during liquefied petroleum gas transportation. These surveys support safe cargo operations by confirming that loading, carriage, and discharge activities are performed in accordance with accepted industry practices.

An LPG cargo survey provides an objective evaluation of cargo-related operations and helps identify discrepancies, operational issues, or potential losses affecting shipowners, charterers, cargo interests, and other stakeholders.

Scope of LPG Cargo Survey

The scope of an LPG cargo survey includes verification of cargo quantity, examination of cargo handling systems, review of operational procedures, and assessment of factors that may influence cargo condition during transportation.

• Cargo quantity measurement and verification
• Loading and discharge operation monitoring
• Cargo tank condition assessment
• Cargo temperature and pressure verification
• Cargo handling equipment inspection
• Documentation and cargo records review
• Identification of cargo losses or discrepancies

LPG Cargo Quantity Measurement

Accurate cargo measurement is a critical part of LPG cargo surveys. Surveyors verify cargo quantities using vessel measurement systems, tank calibration data, temperature readings, pressure records, and relevant calculation methods.

The survey process helps confirm that delivered and received quantities correspond with contractual requirements and operational records.

Cargo Tank and Containment System Inspection

The condition of LPG cargo tanks and containment systems is assessed to verify suitability for safe cargo transportation. The inspection includes examination of tank condition, pressure control arrangements, insulation systems, and associated cargo connections.

Proper cargo containment condition is essential to maintain cargo quality, prevent leakage risks, and ensure safe vessel operation.

Loading and Discharge Operation Survey

LPG cargo surveys are commonly performed during loading and discharge operations to monitor procedures and verify compliance with agreed operational requirements.

• Pre-loading condition checks
• Cargo line and valve verification
• Loading sequence monitoring
• Discharge operation observation
• Completion quantity verification

Cargo Handling Equipment Assessment

The cargo handling system is reviewed to confirm operational readiness. Surveyors assess equipment including cargo pumps, compressors, refrigeration systems, valves, piping arrangements, and safety devices.

• Cargo pumps and compressors
• Reliquefaction systems
• Cargo piping and manifolds
• Pressure and temperature monitoring systems
• Emergency shutdown arrangements

Cargo Documentation Review

A complete LPG cargo survey includes verification of relevant documentation to ensure consistency between physical cargo condition and recorded information.

• Cargo measurement records
• Loading and discharge documents
• Cargo logs and operational records
• Tank calibration certificates
• Bill of lading and cargo documentation

Cargo Damage and Loss Investigation

When cargo discrepancies or damage occur, an LPG cargo survey can assist in determining the possible causes and extent of loss. The investigation may include examination of operational procedures, equipment condition, documentation, and handling practices.

Independent LPG Cargo Survey Services

Independent LPG cargo surveys provide reliable technical information for shipowners, operators, charterers, insurers, and cargo interests. Through accurate measurement, operational verification, and technical assessment, these surveys contribute to safer cargo operations and effective risk management.