
Thermoplastic Tank Inspections
Ensure the safety and continued service of your Thermoplastic Tanks
At BES Group, we understand the unique challenges posed by aging thermoplastic tanks, particularly those approaching or exceeding their design life. To address these concerns, our team of expert technicians meticulously inspect, assess, and test your thermoplastic tanks, ensuring their safety and continued service.

Our comprehensive Thermoplastic Tank Inspection approach
Our thermoplastic tank inspections encompass a comprehensive approach that adheres to industry best practices and regulatory requirements, including COMAH and PUWER regulations. We conduct our inspections in line with EEMUA 225, SAFed IMG02c, and PM 86 Guidance, ensuring the integrity of your tanks.
We employ advanced non-destructive testing (NDT) techniques, such as ultrasonic thickness testing (UT), water-based fluorescent dye penetrant crack detection, and spark testing (AC or DC holiday testing), to identify potential defects and damage that may not be visible to the naked eye.
Our qualified assessors, including EEMUA 159 Tank Assessors and ASME Plant Inspectors Level II, conduct thorough assessments to determine the structural integrity and operational fitness of your thermoplastic tanks. This assessment provides valuable insights into the condition of your tanks and informs our recommendations for continued service.
Here are some examples of the types of assets we can inspect:
- Chemical Storage Tanks
- Scrubbers
- Demisters
- Effluent Tanks

We are also able to offer our customers In Service or Out of Service inspections in line with EEMUA 225, SAFed IMG02c, and PM 86 Guidance, under in-house procedures.
Our services include:
- Tank Preparation for Inspection Consultancy (In Service or Out of Service, including consultancy on cleaning and chemical removal / disposal services).
- Non-Destructive Testing (NDT) including UT (Ultrasonic Thickness), Water Based Fluorescent Dye Penetrant crack detection, and Spark Testing (AC or DC Holiday testing).
- Fitness for Service and basic repair recommendations post assessment by a competent person, EEMUA 159 Tank Assessor or ASME Plant Inspector Level II.
We offer a comprehensive turnkey solution that includes inspection, NDT, assessment, and recommendations for continued service, ensuring your tanks remain safe and reliable assets. Our team can also provide basic repair consultancy to address any identified defects or damage.
Discover the key to peace of mind with our trusted thermoplastic tank inspections.
Get in touch today! Get in touch today! Get in touch today!FAQs
How often do tanks need to be inspected?
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How often inspection of thermoplastic tanks should be inspected depends on several factors, including the type of tank, the chemicals being stored, the environmental conditions, and the local regulations. However, a general rule of thumb is to have your thermoplastic tanks inspected every five years.
What are the types of Thermoplastic Tanks?
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1. PP (Polypropylene)
2. HDPE (High Density Polyethylene)
3. MDPE / LDPE (Medium and Low Density Polyethylene)
4. PVC-U (Polyvinyl chloride)
5. PVDF (Polyvinylidene Fluoride)
6. ECTFE (Ethylene and Chlorotrifluoroethylene)
Key benefits
Ensuring safety
Thermoplastic tanks are made of materials that are resistant to corrosion and chemicals, but they can still develop cracks or other damage over time. Regular inspections can help to identify any potential problems before they lead to leaks or other safety hazards.
Extending service life
Thermoplastic tanks can last for many years, but they will eventually need to be replaced. Regular inspections can help to identify any signs of aging or wear and tear, so that repairs can be made to extend the tank's service life.
Compliancy
In some industries, such as the chemical and oil and gas industries, there are regulatory requirements for inspecting thermoplastic tanks. Regular inspections can help to ensure that your tanks are compliant with these requirements.
Industry statistics
30-35
years is the average lifespan of a thermoplastic tank that is regularly inspected, according to the International Association of Tank Inspection and Repair (IAIR).
10%-20%
probability of a leak occurring in a thermoplastic tank that is not regularly inspected, according to the American Petroleum Institute (API).
£10,000 to £100,000
is the average cost of repairing a leak in a thermoplastic tank, according to the British Standards Institution (BSI).
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Why choose us
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API 579 Fitness for Service Assessments
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Inspection of Atmospheric Storage Tanks
Repair Plans for Steel Storage Vessels
Storage Tank Inspection to EEMUA 159
Tank Floor Settlement Surveys to EEMUA 159
Tank Remedial Work Signoffs
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