7-Point Container Inspection Guide: How to Check Empty Containers Before Loading

In export import operations, a container is not only a means of transport but also a key factor in ensuring safety, reputation, and compliance. Inspecting the container before loading is mandatory to minimize mistakes, prevent fraud, and maintain trust. A damaged, contaminated, leaking, or tampered container can lead to serious problems such as:

Wet cartons
Mold and mildew
Fabric odor contamination
Damaged packaging
Cargo loss
Security incidents
Shipment rejection
Customer complaints
Delays at destination

That is why an empty container should be inspected before any cartons or garments are loaded.

A practical inspection sequence is: Doors – Left Side – Right Side – Floor – Roof/Ceiling – Front Wall – Undercarriage & Exterior.
The basic rule is simple: Inspect First – Record Results – Correct or Reject Problems – Load Only After Approval.

What Is a 7-Point Container Inspection?

A 7-point container inspection is a systematic check of the main areas of an empty shipping container before cargo loading begins.

The inspection focuses on two main objectives:

Cargo protection — making sure the container is clean, dry, structurally suitable, and capable of protecting the shipment.
Supply-chain security — checking for unusual modifications, concealed spaces, unauthorized repairs, or evidence of tampering.

The seven areas normally checked are:

Doors and locking system
Left side wall
Right side wall
Floor
Roof / ceiling
Front wall
Undercarriage and exterior

For garment shipments, inspectors should pay particular attention to water leakage, dirt, oil, odor, sharp surfaces, moisture, structural damage, and suspicious modifications.

Why Container Inspection Matters in Garment Export

Garments and textile products can be especially sensitive to the condition of the container. Finished apparel may remain inside the container for days or weeks during:

Truck transportation
Port storage
Ocean transit
Transshipment
Destination handling

A small container problem can therefore become a much larger product-quality problem.

For example: Small Roof Hole + Heavy Rain + Long Transit = Wet Cartons and Mold Risk
Similarly: Chemical Residue + Closed Container + Long Transit = Odor Contamination Risk

Container inspection should therefore be treated as part of final shipment quality control rather than only as a logistics activity.

Before Starting the 7-Point Inspection

Before entering or loading the container, the responsible team should confirm the basic container information.

Check:

Container number
Container size and type
Shipping documents
General exterior condition
Interior cleanliness
Signs of previous cargo contamination
Unusual odor
Visible water
Major structural deformation

The inspection area should also have enough lighting for the responsible person to see the container clearly. If the container condition is questionable, loading should not begin until the issue is evaluated.

7-Point Container Inspection Guide:

Step 1 – Check the Doors & Door Locks

Doors are the “frontline guardians.” Ensure locks work properly, hinges are secure, and there are no signs of drilling or re-welding on the inside. Doors should open and close smoothly without warping.

What to Check – Inspect:

Door locking bars
Handles
Hinges
Door seals
Locking cams
Keeper brackets
Door frame
Welds
Gaskets
Seal area

The doors should sit correctly within the frame.

Look for anything unusual such as:

Fresh welding
Cut marks
Drilled holes
Replacement metal
Loose hardware
Bent locking bars
Damaged hinges
Broken door gasket
Unusual openings

Check the Door Gasket

The rubber gasket helps reduce water and dust entry.

Inspect for:

Tears
Missing sections
Hardening
Separation
Large gaps

A badly damaged gasket can increase the risk of water entering during transportation.

Check the Locking Mechanism

Operate the locking bars and handles.

They should:

Move normally
Engage correctly
Hold the door securely
Show no obvious signs of unauthorized modification

After cargo loading, the seal location must also be suitable for secure sealing.

The container doors are one of the most important inspection points because they control access to the cargo area. Both doors should open and close normally without excessive force. – Container door lock inspection

Step 2 – Inspect the Left Side Wall

The left side of the container should be checked both visually and physically. Inspect from the inside and, where practical, from the exterior.

What to Look For – Check for:

Holes
Cracks
Punctures
Dents
Corrosion
Unusual welds
Added metal plates
Loose panels
Water stains
Light entering through the wall

Container side walls naturally contain construction joints and repairs, so the objective is not simply to reject every weld. The inspector should look for unusual or unexplained differences from normal container construction.

Light Test

With the doors positioned appropriately for inspection, look for unwanted daylight entering through damaged areas. Visible light can indicate a hole or opening that may allow:

Water
Dust
Insects
Moisture

to enter during transportation.

Inspecting container side panels – Check both inside and outside surfaces for subtle signs of manipulation like added welds or irregular seams. Ensure the panels are perfectly sealed so no light shines through from the outside.

Step 3 – Inspect the Right Side Wall

The right side should receive the same level of inspection as the left. Do not assume that checking one side is enough.

Inspect for Structural Damage – Look for:

Deep dents
Torn metal
Cracks
Holes
Rust-through
Separation at seams
Loose panels

A severely distorted wall may affect container integrity and reduce cargo protection.

Look for Unusual Modifications

Check whether any section looks inconsistent with the rest of the container. Possible warning signs include:

Fresh paint over one small area
Different metal thickness
Irregular welding
Unusual seams
Added panels
Unexpected cavities

Anything suspicious should be reported before loading.

Step 4 – Inspect the Container Floor

The floor is extremely important for garment shipments because cartons will normally sit directly on it or on protective material placed over it. A poor floor can damage cargo even when the container walls and roof are acceptable.

The floor directly affects product safety. Look for drill holes, gaps, or tampered wood. Tap gently to detect hidden voids. Ensure the floor is clean, free from oil stains or chemical residues that could ruin your garments.

Check for Physical Damage – Inspect for:

Broken flooring
Large cracks
Holes
Loose boards
Raised fasteners
Splinters
Sharp edges
Uneven areas

These defects may damage cartons or create unstable stacking.

Check for Contamination – Look carefully for:

Oil
Grease
Chemical stains
Paint
Mud
Water
Mold
Unknown residue

Garments can absorb odors surprisingly easily during long transportation. Therefore: Clean-Looking Floor isn’t Odor-Free Container The container should also be checked by smell.

Check for Moisture

The floor should be reasonably dry before loading. Visible moisture is a warning sign. Wet or damp conditions can contribute to:

Soft cartons
Mold
Mildew
Staining
Odor

For apparel shipments: Dry Container + Dry Cartons + Controlled Packing = Lower Moisture Risk.

Step 5 – Inspect the Roof / Ceiling

Roof damage is easy to overlook because inspectors naturally focus on the floor and walls. However, roof holes are particularly dangerous during rain and ocean transportation.

Check From Inside

Look upward across the complete ceiling. Inspect for:

Holes
Punctures
Cracks
Corrosion
Water stains
Bent sections
Unusual repairs

If daylight is visible through the roof where it should not be, the container may not be weather-tight.

Why Roof Damage Is Serious

Even a small leak can affect many cartons during long-distance shipment. Possible consequences include: Water Entry – Wet Cartons – Increased Humidity – Mold / Staining / Odor. For garments packed in paper cartons, preventing water entry is particularly important.

Step 6 – Inspect the Front Wall

The front wall is located opposite the container doors. Because it is far from the loading entrance, it is sometimes inspected too quickly. That is a mistake.

What to Check – Inspect:

Wall surface
Corners
Welds
Interior dimensions
Panel condition
Signs of repair
Holes
Punctures
Corrosion

Look for any abnormal construction or unexplained added material.

Check the Corners – Pay attention to where:

Side wall meets front wall
Front wall meets ceiling
Front wall meets floor

Damage at joints can allow moisture or contaminants to enter.

Step 7 – Inspect the Undercarriage and Exterior

The final step is to inspect the outside and lower structure of the container. This area is important for both structural condition and supply-chain security.

Check the Exterior – Inspect:

Container identification
Visible markings
Exterior panels
Corners
Roof exterior where safely visible
Door frame
Major repair areas

The container information should correspond with the shipping documentation.

Inspect the Undercarriage

Where inspection can be conducted safely, look underneath the container for:

Unusual attachments
Added boxes
Suspicious cavities
Structural damage
Unexpected welding
Modified sections

Do not crawl beneath or enter an unsafe area merely to complete an inspection. Site safety procedures should always be followed.

Additional Check:

Container Cleanliness

Although cleanliness appears throughout the seven inspection points, it deserves separate attention for apparel shipments. An empty container should be checked for:

Dust
Dirt
Wood fragments
Nails
Metal pieces
Oil
Grease
Mold
Water
Pest evidence
Previous cargo residue

Cartons should not be loaded into a visibly contaminated container.

Container Odor

Odor is particularly important for garments. Textiles and packaging can absorb unwanted smells during long transportation. Check for odors such as:

Chemicals
Fuel
Oil
Mold
Fish
Food
Smoke
Strong perfume
Unknown previous cargo

If an odor is strong or cannot be identified, the container should be evaluated before loading. A simple rule is: Clean Appearance isn’t Clean Container.

Water Leakage

The inspection should look for evidence of previous or current water entry. Warning signs include:

Water marks
Rust streaks
Damp flooring
Mold
Ceiling stains
Wet corners
Visible holes

A container that leaks can cause significant garment damage during ocean transport.

Sharp Objects

Garment cartons can be punctured by:

Nails
Broken metal
Sharp screws
Splintered flooring
Damaged panels

Before loading, check the interior surfaces that may come into contact with cartons.

Purpose, Scope & Responsibilities

Purpose

To ensure security standards, prevent tampering, and guarantee that no prohibited items are hidden within the container before loading.

Scope & Responsibilities

This procedure applies to all containers before loading at factories or warehouses.

Security / QA / QC: Directly inspect and record results.
Driver / Transport: Cooperate and assist as required.

Quick 7-Point Container Inspection Checklist

Inspection Point	What to Check
1. Doors & Locks	Hinges, locking bars, handles, gaskets, welds, holes, tampering
2. Left Wall	Holes, dents, cracks, corrosion, unusual welds, light penetration
3. Right Wall	Panel damage, repairs, openings, unusual modifications
4. Floor	Holes, broken boards, oil, chemicals, moisture, mold, sharp objects
5. Roof / Ceiling	Holes, leaks, rust, water stains, abnormal repairs
6. Front Wall	Structural condition, punctures, joints, unusual panels
7. Undercarriage & Exterior	Identification, structure, unusual attachments, damage, modifications