Glossary > #Survey Code

Survey Code – Component Code

Survey Code – Component Code is a standardized alphanumeric identifier used in the global shipping and logistics industry to precisely designate a specific structural part of an intermodal container. These codes create a universal language utilized by container surveyors, repair depots, and shipping companies for consistent and clear documentation of condition, damage, and repairs to containers. Each part – from door handles to floor beams – has its own unique code, which eliminates ambiguity, accelerates communication, and ensures transparency throughout the entire container maintenance and repair process.

The primary purpose of component codes is to serve as the fundamental building block of a detailed inspection report. When a surveyor identifies damage, they combine the component code with a damage code (e.g., bent, cracked, dented) and a location code (specifying the exact position on the component). This structured approach enables the creation of a precise, machine-readable record that is critical for generating repair estimates, handling insurance claims, and maintaining container compliance with international safety standards.

Component codes form the foundation of systems such as Equipment Damage and Inspection System (EDIS) and Container Equipment Data Exchange (CEDEX), which govern data communication across the entire international shipping network.

Significance of Standardization in Global Container Operations

Today’s global economy is built on shipping containers, whose revolutionary contribution lies not only in the construction itself, but especially in the radical degree of standardization. Millions of steel boxes travel between ships, trains, and trucks thanks to precisely defined international specifications – not only in terms of container dimensions, but also in how they are marked and managed.

In an industry where a single ship can carry over 20,000 containers belonging to dozens of different owners, a common language is essential. Component codes provide this fundamental language for maintenance and repairs. Without them, a damage report from a depot in Shanghai could be incomprehensible to a fleet manager in Rotterdam. The phrase “bent side beam” can be interpreted in various ways, leading to incorrect repair estimates, disputes over liability, and dangerous delays.

Standardized component codes ensure that every participant – from the container surveyor to the accountant approving a repair invoice – is discussing the exact same part. This system is essential for maintaining compliance with international safety regulations, particularly the International Convention for Safe Containers (CSC), which requires containers to be maintained in a structurally safe condition.

Key Organizations Establishing Container Standards

The proper use and development of component codes depends on several international institutions:

International Organization for Standardization (ISO):
- Establishes fundamental standards for the entire container industry, particularly standards ISO 6346 (container identification and marking) and ISO 1496 (container construction).
- ISO 6346 defines the system of container identification numbers (owner, equipment category, serial number, check digit) and mandatory marking. While it does not directly specify component codes, its terminology forms the foundation for further systems.
Bureau International des Containers (BIC):
- Since 1933, manages the registry of three-letter owner codes for containers (e.g., MSCU, MAEU), which form the basis of unique identification for each container.
Institute of International Container Lessors (IICL):
- A professional association of leading global container and chassis lessors that establishes strict inspection and repair standards.
- Developed the EDIS (Equipment Damage and Inspection System) – a key source for detailed component and damage codes.
United Nations Economic Commission for Europe (UNECE):
- Responsible for developing the CEDEX (Container Equipment Data Exchange) system, which standardizes electronic exchange of all container equipment data across shipping chains.

Main Systems of Component Codes: EDIS and CEDEX

EDIS (Equipment Damage and Inspection System)

Developer: Institute of International Container Lessors (IICL)
Focus: Detailed standardization of container damage and repair documentation.
Use: Primarily surveyors, repair depots, and technicians.
Coding Structure:
- Component code (e.g., CPO for outer corner post)
- Damage code (e.g., DT for dent)
- Repair code (e.g., RPS for straightening and repair)
- Location code (precise localization on the container)
IICL Preferred Codes: IICL also publishes a list of preferred codes to ensure uniformity and communication efficiency.

CEDEX (Container Equipment Data Exchange)

Developer: United Nations Economic Commission for Europe (UNECE)
Focus: Standardizes electronic exchange of all container equipment data (not just damage).
Area of Use: IT systems, EDI platforms, shipping companies, terminals.
CEDEX Function: Enables transmission of detailed inspection reports, container status changes, and technical characteristics between systems of various entities.

EDIS	CEDEX
Developer	IICL
Primary Purpose	Coding of damage and repairs
Main Users	Surveyors, depots, leasing companies
Scope	Micro-level: specific parts, damage, repairs
Example of Use	Creation of detailed inspection report

Anatomy of a Shipping Container: Detailed Breakdown of Component Codes

Rear and Door Assembly

The rear of the container is the most complex – it contains container doors, locking mechanisms, and identification elements (e.g., CSC label).

Component	Code	Description
Corner fitting	`CFG`	Robust steel blocks on eight corners of the container, designed for lifting, stacking, and securing.
Corner post – outer	`CPO`	Main vertical beam in the rear corners, forms the door frame.
Complete doors (including hardware)	`DAH`	Entire door assembly including panel, seals, and locking mechanism.
Door seal	`GTO`	Rubber seal around the doors to ensure water and air tightness.
Locking bar assembly	`LBA`	Vertical bar system with handle, locks, and stops securing the doors.
Locking mechanism	`LBC`	Rotating lock at the end of the locking bar that slides into the holder.
Handle holder	`DHR`	Element holding the handle in a secured position.
Hinge pin	`HGP`	Connects the doors to the corner post, allows opening and closing.

Side Panel Assembly

Side panels provide longitudinal strength to the container, typically made of corrugated steel.

Component	Code	Description
Top beam	`RLA`	Main horizontal beam along the top edge of the side wall.
Bottom beam	`RLA`	Main horizontal beam along the bottom edge of the side wall.
Side wall panel	`PAA`	Corrugated steel sheet forming the main part of the side wall.
Ventilation assembly	`VRA`	Small ventilation openings for passive ventilation and condensation prevention.

Front Assembly

The front wall is solid, structurally similar to the side walls.

Component	Code	Description
Corner post – front	`CPS`	Main vertical beam in the front corners.
Front wall panel	`PAA`	Corrugated steel sheet of the front wall.
Top and bottom beam	`RLA`	Horizontal beams on the top and bottom edges of the front wall.

Roof Assembly

The roof is designed for high loads during container stacking.

Component	Code	Description
Corrugated roof sheet	`PSC`	Main corrugated steel sheet of the roof.
Roof connection plate	`HEP`	Plate connecting the roof panel to the top beams of the front and rear walls.

Floor and Underframe

The undercarriage is the foundation of the container, designed for maximum load capacity.

Component	Code	Description
Floor plywood	`FPP`	Standard floor material, typically 28 mm thick plywood with protection against pests and moisture.
Cross beam	`CMU`	Steel beams across the underside, transfer load to side beams.
Fork pocket	`FLA`	Reinforced tunnels for lifting 20′ containers with forklifts.
Threshold plate	`FTP`	Steel plate at the doors protecting the floor edge from damage during loading.
Tunnel assembly	`TUA`	Recessed channel in the underframe for mounting on a “gooseneck” chassis.

Practical Use: How a Surveyor Uses Component Codes

The role of a container surveyor is to function as an independent expert who assesses the condition of a container according to established criteria (IICL, cargo-worthy, or specific client requirements). Component codes are a key tool for this work.

Typical inspection process:

Identification: Recording the complete container identification number (e.g., ABCU 123456 7), verification of CSC label validity.
Systematic inspection: Examination of all parts – rear, side walls, front wall, roof, undercarriage, interior.
Damage documentation: Each identified damage is recorded using a combination of standardized codes (e.g., 10 cm dent in the lower part of the right door: component PAA, location “right door, lower part”, damage DT, size 10 cm).
Photo documentation: Each damage is photographically documented and linked to the coded record.
Report generation: Data is used to automatically generate a detailed report (Equipment Interchange Report, EIR), often in standardized data formats (XML, SVG for damage mapping).
Repair cost estimate: The coded report is sent to a repair facility, which uses it to establish a precise, transparent, and comparable cost estimate.