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Container Weight Verification Brochure V1.0

Container weight verification
Let us take the weight off your mind
CWSTM ensures full compliance
to the IMO’s SOLAS amendments
for container weight verification
Strainstall’s Container Weight System (CWS)TM
seamlessly integrates load monitoring technology
onto existing container handling equipment, with no
impact on operations.
CWSTM is fully configurable to suit existing Terminal Operating Systems (TOS), delivering accurate weight
verification data in real time, as part of the regular lifting cycle at the terminals.
The system can be retrofitted into the spreader, headblock or sheaves, making it a permanent feature
of the container handling equipment with minimal wear. System options are flexible including load pins,
diaphragm load cells or industry standard twistlocks.
Installed and tested in under two hours, the robust construction of CWSTM and it’s environmentally
sealed enclosures provide a lifelong, low maintenance solution to container weighing.
Developed in response to industry needs CWS™ meets the International Maritime Organization’s (IMO)
proposed amendments to SOLAS safety guidelines for mandatory verification of container weight, which
comes into effect 1 July 2016.
In January 2007, the containership MSC Napoli suffered a structural failure and
broke up off the coast of the UK. Misdeclared container weights were identified
as a factor causing the structural failure.
Features and benefits of CWS
Container weight verification FAQ’s
1. What’s happening?
Using our extensive knowledge and expertise in load measurement and data integration, Strainstall has
developed a highly accurate method for container weight verification, that is fast and easy to install.
From 1 July 2016, it will be a legal requirement for every export container to have a
verified container weight as a condition for loading aboard a vessel.
2. Why is this happening?
The mis-declaration of weights is a significant issue that arises in almost every trade and
Weighs in motion as part of the ports lifting cycle
No delay to port operations
Retrofit solutions for all existing spreader based container handling
Flexible integrated solution
loading process occurs.
Fast installation in under 2 hours
Minimal downtime required
3. How can we verify the container weights?
Non-consumable load pin or load cell system solutions
Low maintenance costs
Simple to install - no special tools or skills required
Reduced installation costs
Rugged, proven technology
Highly efficient and reliable, reduces downtime and costs
Highly accurate and consistent reliability
Exceeds SOLAS requirements
12 month data logging
Historic data available for analysis and insurance
Single point streaming data
Suitable for TOS or insurance related quotes
Data output in various analogue / digital formats
Compatible - data can be fed directly into TOS
Wireless system options
Quick installation and eliminates the risk of cable damage
Identifies eccentrically loaded and overloaded containers
Improved safety
Simple on-site calibration
Minimises future downtime and costs
Easy field repairs in case of damage
Minimises downtime
Optional 3G / 4G modem for remote access
Enables remote commissioning, operational support and upgrades
Small and lightweight system with minimal power requirements
Simplifies installation
has led to a number of catastrophic incidents. Proper container handling and safe vessel
stowage planning requires the verification of accurate container weights before the vessel
The IMO’s SOLAS amendments provide two approved methods in determining the
container weight:
Method 1 - weighing the loaded container
Method 2 - weighing the contents of the container and adding the weight to the
containers tare weight
Method 1 is the only approved way to measure liquids and flexi tanks. The IMO
guidelines state that method 2 ‘would be inappropriate and impractical for certain types
of cargo’ which are not easy to weigh e.g. scrap metal and unbagged grain.
4. What happens if a container does not have verification papers
If a container turns up to a port without a verified weight it can not be loaded on to the
vessel. By installing a container weighing system at the port, any potential issues of
containers being stranded at the terminal need not be a worry.
By installing a retrofit container weighing system into existing container handling equipment
you eliminate the need to provide a dedicated weighing station, simplifying the logistical
flow of the terminal and significantly increasing the port’s operational safety and efficiency.
Available options
Typical CWSTM specification
User interface
Developed in response to industry needs CWS™ meets the International Maritime Organization’s (IMO’s)
proposed amendments to SOLAS safety guidelines for mandatory verification of container weight.
System options:
Bespoke data output formats or strings
Cabled or wireless spreader / processor communications
3G / 4G modem can be fitted for remote diagnostics and upgrades
Integration with client specific software / hardware
Simultaneous wireless indication in real-time via additional handset
Load sensing via twistlocks, annular cells or load pins
Typical specifications
Better than ±1% of container weight
Environmental protection
Data output
Other options available on request
Hazardous area
Available on request
As required
Dimensions - on the spreader
Dimensions - in the cab
Power - on the spreader
12 / 24 Vdc (max 36Vdc) <500mA
Power - in the cab
12 / 24 Vdc (max 36Vdc) <1A
Annular load cell
or cabled
Data processor
Contact us
T: +44 (0)1983 203 600
E: [email protected]