In 2020, classification societies agreed that ultrasonic testing, when conducted with class type-approved equipment and qualified operators, was an acceptable alternative to hose testing for determining the weathertight integrity of hatch covers for class and statutory inspections. IACS developed standards and criteria for ultrasonic testing companies under IACS UR Z17. This was required to ensure that surveyors checking hatch covers for class and statutory purposes were familiar with ultrasound theory, had practical testing experience, and a basic understanding of hatch-cover design, maintenance, and repairs.

Calibrated and classification society type-approved equipment should always be used to ensure test result repeatability. We use the most recent model of the SDT HATChecker Ultrasonic hatch cover testing device, which is always calibrated and ready for use, and which is always operated by a certified Ultrasonic equipment operator. We provide a standard Ultrasonic Hatch Cover Test Report in a format that P&I clubs, Classification Societies, and Flag States will accept. Other advantages of using ultrasonic testing equipment include the following:

• Ultrasonic testing is a safe and non-destructive method for determining the compression status of a sealing system.
• Ultrasonic testing allows for the easy detection of damaged areas or areas with a lack of compression with pinpoint accuracy. This drastically reduces the amount of time required to identify potential leaks.
• Once the exact location of the leak is determined, the proper repair method can be determined, and because minor and localized damage can be easily identified, unnecessary extensive repairs can be avoided. Testing can be repeated to ensure that the repairs are effective.
• Ultrasonic testing is a ‘dry’ testing method that does not risk damaging water-sensitive cargo or polluting dock, river, or sea water.
• Ultrasonic testing is a quick and simple method of testing that requires no assistance from the ship’s crew other than for supervision and safety.
• A download of test results is available, which provides ship operators with a detailed test report.

Ultrasonic testing equipment can be used in loaded or empty holds, allowing repairs to covers during loading and checking of repairs during or after the loading period, but before going to sea in some cases. Please contact us with vessel details if you want to order an Ultrasonic Hatch cover tightness test. Please contact us if you have any specific job requirements.