clas certification

CLAS ESTABLISHED A CLASSIFICATION OF THE WORKS USING ACCROPODE™, ACCROPODE™II, CORELOC™, ECOPODE™, XBLOC® and more.

CLASS A

Work for ACCROPODE™, ACCROPODE™II, CORELOC™, ECOPODE™, XBLOC ® with service life in line with design goals or more. These are zero-risk structures built as part of the certification that we apply either at the request of the client or contractors.

CLAS regularly acts as third part.

On these projects we do a complete monitoring of the construction of the underlay and its flat berm, by a CLAS accredited diving inspector.

All our inspectors are IMCA and HSE approved professional divers. As such they can go to all sites without exception including offshore installations and really control the reality of work done.

ZAKUM ISLAND ABU DHABI KUANTAN Malaysia.

The CLAS inspectors use drones for following of construction in real time and inspections.

Based on the reports of TECHNOLOGY COMPLIANCE prepared by the CLAS inspectors, the ACCROPODE ™, ACCROPODE ™ II, ECOPODE ™, CORELOC ™ and X-bloc ® armour can be unreservedly approved as conforming to the design and technology and validated CLASS A armour construction. They comply with the mark which concerns only the CLASSE A works for which each TETRAPODE, ACCROPODE ™, ACCROPODE ™ II, ECOPODE ™, CORELOC ™ , X-bloc ® or ny other artificial blocks,has been inspected and recognized as being in conformity with the technology.

CLASS A armors constructed with TETRAPODE, ACCROPODE ™, ACCROPODE ™ II, ECOPODE ™, CORELOC ™ ,X-bloc ® or others, should be monitored every five years and after exceptional storms. To date CLASSE A carapaces built under the supervision of CLAS inspectors have not been subject to any maintenance or repair work.

With our experience both in expertise on old books and full-time site assistance and monitoring, we have been the privileged witnesses of degradation that the quality of installation authorizes or does not allow, depending on whether it has been more or less rigorous. This classification concerns armour layers constructed with TETRAPODE, ACCROPODE ^™, ACCROPODE^™II, ECOPODE ^™, CORELOC^™ and X-bloc ® blocks.

CLASS B

Work using ACCROPODE^™, ACCROPODE^™II, CORELOC^™, ECOPODE^™, XBLOC® whose durability is not guaranteed due to an unknown part of the quality of construction or non-repaired level 2 nonconformities and / or approval given on the basis of surveys submitted by the company and follow up without CLAS accredited diving inspectors.

Expertise of works built without the supervision of CLAS inspectors showed nonconformities that do not appear in as-built documents and construction site logs. Except in extreme cases, the direct consequences of these nonconformities are very difficult to assess, particularly the date of occurrence of the damages. These TETRAPODE, ACCROPODE^™, ACCROPODE ^™II, ECOPODE ^™, CORELOC ^™ and X-bloc ® armour layers must be considered as potentially fragile.

The placement tools for the construction which one confers by mistake the virtues of tool of inspection and approval, do not make it possible to highlight all the nonconformities. The same goes for acoustic tools such as multibeams and acoustic cameras. We have tested and evaluated the most precise and modern acoustic tools. The IMCA and HSE approved professional diving qualifications of the CLAS inspectors allow them to dive to compare the reality of the construction with the computer generated images produced by these tools. This gives CLAS a considerable advantage and a more refined understanding of these tools and their limitations. Thus we have highlighted that there is a "mask effect" which makes the acoustic tools fixed on boats unreliable and often unable to highlight the defects of imbrication and the actual size of the holes.

These tools also point to non-conformities that do not exist, penalizing companies that rely on advice based on these technologies. Based on the tests that we conducted until 2017, these tools can only be used once the recognized shell CLAS TECHNOLOGY COMPLIANT™. These tools also point to non-conformities that do not exist, penalizing companies that rely on advice based on these technologies. Based on the tests that we conducted until 2017, these tools can only be used once the recognized shell CLAS TECHNOLOGY COMPLIANT™ to make a survey that will be attached to the folder as-built as part of the future monitoring of the work. As part of this future monitoring, the comparison of old and recent images may highlight significant degradations. Otherwise, carapaces using TETRAPODE, ACCROPODE ^™, ACCROPODE ^™ II, ECOPODE^™, CORELOC ^™ and X-bloc ® technologies should be classified as CLASS B armour protection to make a survey that will be attached to the folder as-built as part of the future monitoring of the work. As part of this future monitoring, the comparison of old and recent images may highlight significant degradations. Otherwise, carapaces using TETRAPODE, ACCROPODE ^™, ACCROPODE^™II, ECOPODE ^™, CORELOC^™ and X-bloc ® technologies should be classified as CLASS B armour.

The project is potentially fragile and will require annual monitoring and preventive maintenance.

The CLASS B armour layers do not receive the quality mark because all our works have shown that with the presence of a CLAS inspector on the project the production is doubled and the work complies with CLASS A.

Usefull link : Importance of interlocking

CLASS C

Work whose durability is not guaranteed due to an unknown part of the quality of construction.

Approval given on the basis of the surveys submitted by the contractor and a follow-up without CLAS accredited diving inspectors.

In this image the as-built documents prepared by the contractor reported a perfect pose. In fact the armour was laid in the second layer directly on a first carapace damaged by a storm whose ACCROPODE^™ II blocks are mixed with the riprap of the underlayer.

Block totally out of profile not detected by the tools of installation and inspection on DAS ISLAND. This pose was approved based on ECHOSCOPE survey witch not allows to see out of profiles. We supervised as a third part the repair of 5000 meters of X-bloc ® armour.

CLASS C it is also works that is known they are poorly built and will suffer damages.

Blocks placed on fine material. Non-respect of the design, non-respect of the specifications.

The TETRAPODE, ACCROPODE ^™, ACCROPODE ^™II, ECOPODE^™, CORELOC^™ and X-bloc ® Class B armours can become Class C armours due to lack of monitoring and maintenance.

But it is rather the lack of care during the construction, the non-respect of the design and the TID which lead to the classification of a carapace in CLASS C.

Link: Damage mechanics

Breakwater built in total ignorance of the most basic construction rules. This armour is totally unstable

https://youtu.be/_20hpMO3apQ

TETRAPODE, ACCROPODE ^™, ACCROPODE ^™II, ECOPODE ^™, CORELOC^™ and X-bloc ® CLASS C armours need to be rebuilt.

Videos

https://youtu.be/gs9N_xowA_k

https://youtu.be/g-9QGkfeIww

https://youtu.be/gdb13F3Bko8

https://youtu.be/25Iq9xZHLZw

https://youtu.be/I0TuMh6Brwk

https://youtu.be/9ybiQgSrw2E

Usefull link: Damage mechanics

Warning:
This classification and the CLAS TECHNOLOGY COMPLIANT™ trademark are protected by national laws and international conventions governing intellectual property. Consequently, any use of this classification and the CLAS TECHNOLOGY COMPLIANT ™ mark is strictly prohibited, except with the written permission of CLAS (CLAS, Prat de Baix d'Envalira, AD100, Canillo, ANDORRA). We invite you to report any use that seems suspicious to verify the authenticity. CLAS disclaims all liability for the unauthorized use of its classification and mark; such unauthorized use may be particularly perilous (error in the compliance of the work, in particular), in addition to the risk of counterfeiting and unfair competition to which unauthorized users may be exposed. © CLAS - 01 March 2017.