How to Open a Shipping Container: 7 Safe Steps

Knowing how to open a shipping container safely is important whether you are accessing a storage container at home, opening a delivery or unpacking commercial goods. Shipping container doors are heavy, and cargo can shift during transport, creating a risk of sudden movement when the doors are released.

Before opening any container, check the surrounding area, inspect the locking mechanism and consider what might be pressing against the inside of the doors. Never assume that the contents are secure simply because the doors have remained closed during transport.

This guide explains the main steps for opening standard shipping container doors, what to do if the doors are stuck, and when professional assistance is the safest option.

Table of Contents

1. Inspect the container before opening
2. Understand the locking mechanism
3. How to open a shipping container step by step
4. What to do if shipping container doors are stuck
5. Safety precautions before entering
6. How to close and secure the container
7. Frequently asked questions

1. Inspect the Container Before Opening

Before trying to open the doors, inspect the container from the outside. A quick visual check can help identify obvious damage or conditions that may make opening unsafe.

Check the following:

• The container is positioned on stable, reasonably level ground.
• The doors, hinges, locking bars and handles show no obvious damage.
• There are no signs that cargo is pushing against the doors.
• The surrounding area is clear of people, vehicles and obstructions.
• Warning labels or dangerous goods signs are visible and understood.
• There is enough space for the doors to swing open safely.

If the container has moved, is leaning, has damaged doors or appears to be under unusual pressure, do not attempt to force it open. Have the situation assessed by a competent person.

SafeWork NSW identifies shifting cargo and unstable loads as important hazards when opening shipping containers. Read its Guide for Unpacking Shipping Containers for more detailed safety guidance.

2. Understand the Shipping Container Locking Mechanism

Most standard shipping containers have two rear doors secured by vertical locking bars. These bars connect to locking cams at the top and bottom of the doors.

The handles operate the locking bars, allowing the doors to be secured or released. Some containers also have a separate security lock or lockbox fitted to prevent unauthorised access.

Before operating the doors, identify the type of locking arrangement fitted to your container.

Common container door components

• Locking bars: Vertical metal bars that secure the door.
• Handles: Used to operate the locking bars.
• Locking cams: Engage with fittings at the top and bottom of the door frame.
• Hinges: Allow each door to swing open.
• Security lock or lockbox: Provides an additional layer of protection against unauthorised access.

If a padlock, bolt or other security device is fitted, it must be unlocked using the appropriate key or authorised method before operating the door handles.

Do not cut a lock or dismantle the mechanism unless you are authorised to do so and the work can be performed safely.

3. How to Open a Shipping Container Step by Step

Follow these general steps when opening a standard container, provided the doors and surrounding conditions appear safe.

Step 1: Clear the area

Keep other people away from the door swing area. Wear sturdy footwear and suitable work gloves, and make sure you have enough room to operate the handles without standing in the path of a door or possible falling cargo.

Step 2: Check for security locks

Look for padlocks, lockboxes or other security devices. Unlock them using the correct key or authorised method.

If you cannot unlock the security device, contact the owner or an appropriate locksmith rather than damaging the container.

Step 3: Inspect the locking bars and handles

Check whether the handles and locking bars appear damaged, bent or under pressure. Do not operate a visibly damaged mechanism or put your hands where they could be trapped.

If the bars appear heavily loaded or the doors are visibly bowed, stop and arrange an assessment.

Step 4: Release the first door cautiously

On a standard two-door container, safety guidance commonly recommends cautiously opening the right-hand door first, provided it is safe to do so. The door must not be forced if cargo appears to be pressing against it.

Keep your body out of the likely path of the door and any material that could fall. Where cargo may be resting against the doors, an appropriate restraint and a planned safe opening procedure may be necessary. Do not improvise a restraint if you are unsure how to use it safely.

Step 5: Check for shifted cargo

As the first door begins to open, look for signs that items have moved during transport. Watch for leaning packages, unstable loads, damaged packaging or materials pressing against the remaining door.

If anything appears unstable, stop. Do not enter the container or try to hold back a falling load.

Step 6: Open the second door only when safe

If the first door opens safely and the load has been assessed, continue with the second door using the same cautious approach.

Never assume that opening one door proves the contents are stable. Cargo can shift independently, and the second door may be under different pressure.

Step 7: Secure the doors

Once the doors are fully open and it is safe to do so, use the fitted door retainers or other appropriate securing arrangements to prevent the doors swinging unexpectedly in the wind.

Do not leave heavy doors unsecured where they could strike people, vehicles or nearby objects.

Important: These are general steps for standard container doors. If a container is loaded, damaged, jammed, leaning or suspected of containing hazardous materials, follow an appropriate risk assessment and safe work procedure rather than proceeding with ordinary opening steps.

4. What to Do if Shipping Container Doors Are Stuck

Container doors can become difficult to open because of corrosion, damaged hinges, bent locking bars, frame distortion or pressure from the contents.

If your container will not open normally, first identify any visible problem without putting yourself in the door’s path.

Common reasons container doors get stuck

Corrosion or seized components: Rust and lack of maintenance can affect hinges, locking cams and moving parts.

Damaged locking bars: A bent bar or handle may prevent the locking mechanism from releasing correctly.

Door or frame distortion: An impact, uneven support or structural damage can affect door alignment.

Pressure from cargo: Items inside may be pushing against the doors, making them difficult or dangerous to release.

Safe actions to consider

• Check whether a separate security lock is still engaged.
• Inspect the locking mechanism for obvious damage from a safe position.
• Confirm that the container is stable and the surrounding area is clear.
• Stop if the doors appear bowed, heavily loaded or structurally damaged.
• Arrange assistance from a competent container technician if the cause is unclear.

Do not repeatedly jerk the handles, stand directly in front of a door that is under pressure, or use improvised extensions to increase force. Do not use a forklift, vehicle or lifting equipment to pull a door open.

If cargo may be pressing against the doors, a specialist should establish a safe method of opening the container. This reduces the risk of uncontrolled door movement or falling materials.

5. Safety Precautions Before Entering a Shipping Container

Opening the doors does not automatically mean the container is safe to enter.

Depending on its previous use, a container may contain hazardous residues, fumigants, dust, chemical vapours or other contaminants. Cargo may also be unstable, and the floor may be damaged or slippery.

Before entering, consider these precautions:

• Check the container’s previous use and any warning labels.
• Look for damaged, leaking or unstable cargo.
• Check the floor and entry area for damage or trip hazards.
• Ensure adequate lighting and a clear route.
• Assess ventilation and potential chemical exposure.
• Keep people clear of moving plant and unloading operations.
• Use appropriate protective equipment and a safe work procedure.

If the container has transported goods internationally or has warning notices indicating fumigation, do not assume that opening the doors for a short time makes it safe to enter. Follow applicable guidance for assessing and controlling chemical exposure.

Safe Work Australia provides further information in its guidance on risks when unpacking shipping containers.

Where there is a suspected hazardous atmosphere, unstable load or other serious hazard, keep people out and obtain appropriate professional assistance.

6. How to Close and Secure a Shipping Container

When you have finished accessing the container, check that the doorway and closing area are clear.

A general closing procedure is:

1. Remove people and obstructions from the door swing area.
2. Check that no items are protruding into the door frame.
3. Release the door retainers carefully.
4. Close the doors without placing hands between the door and frame.
5. Engage the locking bars and handles fully.
6. Confirm that the locking cams are engaged correctly.
7. Fit the appropriate security lock if required.

Never force a door closed against protruding cargo or a misaligned frame. Repositioning goods or repairing a damaged mechanism may be necessary before the container can be secured properly.

If the container will be used for regular storage, inspect the doors and locking components periodically. Address corrosion, damaged handles and stiff mechanisms before they become more difficult to operate.

7. Frequently Asked Questions

How do you open a standard shipping container?

Inspect the area and doors, remove any authorised security lock, check the locking bars and release the doors cautiously. If cargo may be pressing against the doors or the mechanism is damaged, stop and seek professional assistance.

Which shipping container door should be opened first?

Safety guidance commonly recommends cautiously opening the right-hand door first when it is safe to do so. However, the condition of the container and its contents takes priority. Never force a door that may be under pressure.

Why won’t my shipping container doors open?

Possible causes include corrosion, damaged locking bars, bent hinges, frame distortion or cargo pushing against the doors. Do not use excessive force. Have the mechanism and container assessed if the cause is unclear.

Can I use a lever or vehicle to force container doors open?

Do not use improvised levers, vehicles or forklifts to force a door open. Excessive force can damage the locking mechanism or cause sudden door movement. Use a competent technician when normal operation is not possible.

Is it safe to enter a container immediately after opening it?

Not necessarily. Containers can contain hazardous residues, fumigants, unstable cargo or damaged flooring. Assess the hazards and follow the appropriate safety procedures before entering.

How can I make container doors easier to operate?

Keep hinges and locking mechanisms maintained in accordance with appropriate manufacturer or technician guidance. Address corrosion and damage early. If the doors remain difficult to operate, have them inspected rather than applying excessive force.

Find the Right Shipping Container at Container Supply Hub

Understanding how to open and secure a shipping container helps you manage everyday access more safely. Regular inspection, correct operation and attention to possible cargo movement can reduce the risk of damage and injury.

If you are comparing container options for storage or a business project, browse our shipping containers for sale or explore our 20ft container range.

Before arranging delivery, read our Shipping Container Delivery and Site Preparation Australia guide to prepare your site and access route.

For product availability or questions about container options, contact Container Supply Hub.

Safety notice: This article provides general information and is not a substitute for a site-specific risk assessment, training or professional advice. Stop and seek competent assistance if the doors are damaged, cargo appears unstable, or hazardous contamination is suspected.