San’ao Nuclear Power Plant 1&2, China

Posted on June 12, 2024June 12, 2024 by Kansuda Visesthanakorn

San’ao Nuclear Power Plant 1&2, China

Dextra has successfully supplied 340,000 Griptec couplers for the anti-aircraft impact shell construction of the San’ao Nuclear Power Plant units 1 and 2, featuring the advanced HPR1000 Hualong reactors.

Griptec, recognized as the only 100% proofed splicing system, has gained the trust of over ten nuclear reactors globally, cementing its reputation for reliability and safety in high-stakes environments. The system’s stringent quality assurance processes ensure that each coupler meets the demanding standards required for nuclear applications, providing unparalleled performance and durability.

One of the standout features of Griptec is its high-productivity bar end preparation equipment. This state-of-the-art machinery boasts an impressive processing speed of 30 to 45 seconds per bar end, significantly enhancing construction efficiency. Additionally, the equipment is designed for operation by a single operator, optimizing workforce utilization.

Moreover, Dextra is the first manufacturer of products for civil works construction whose quality management system is ISO 19443 certified for nuclear safety. This certification underscores Dextra‘s commitment to the highest standards of safety and quality in the nuclear industry, reflecting the company’s dedication to excellence and reliability.

The San’ao Nuclear Power Plant project is a key component of China’s strategic initiative to expand its nuclear power capacity, which is vital for meeting the country’s growing energy needs while reducing carbon emissions. By supplying Griptec couplers, Dextra is playing a crucial role in ensuring the safety and efficiency of this project.

Flamanville EPR

Posted on November 5, 2022March 14, 2024 by Sir Gwi

Flamanville EPR

Flamanville is the first reactor built after the new generation EPR design (European Pressurized Reactor), after a 100% Chinese design. It will have a capacity of 1.3GWe when entering service in 2019.

Dextra has been present on site since the beginning of the construction works in 2008 and until 2015.

For this challenging project, Dextra has been supplying its Griptec rebar splicing solution through its local fabricator partners. The rebar preparation was supported by an additional machine placed at site.

Griptec is the preferred rebar splicing solution of the nuclear industry thanks to its unique performance level and an automatic testing process which systematically tests all the connections produced as part of its standard cycle: a guarantee that 100% of the connections perform above project requirement.

More than 800,000 Griptec connections have been used on the project, including 400,000 position assemblies, allowing to connect large diameter rebar without rotating them. The Griptec connections have been installed on reactor building and APC shell, as well as auxiliary buildings.

In particular, Griptec have been used for the connections of large prefabricated panels.

Four sided panels with Griptec female sleeves and bridging studs

Thanks to its Bridging Assemblies, square panels could be reconnected on four sides while coping for possible misalignment that occur when lifting the cage.

Olympic Velodrome

Posted on November 4, 2022March 14, 2024 by Sir Gwi

Olympic Velodrome

The Olympic Velodrome, now renamed as Lee Valley VeloPark, is a multipurpose sport facility located in East London. The facility was initially built to host the 2012 London Olympics and Paralympics. The facility still features road course tracks and BMX tracks and hosts international cycling competitions.

For this project, Dextra Europe delivered the Griptec rebar splicing solution to contractors Sir Robert Mcalpine and Byrne construction.

The Griptec splices were mostly use to provide vertical rebar connections in the velodrome columns.

Our Griptec solution was supported by Dextra’s local distributor in London which hosts the Dextra Griptec equipment required for the extrusion of the Griptec sleeves onto the rebar.

Griptec is a CARES TA1-A, TA1-B and TA1-C approved solution, making it suitable for even the most advanced rebar splicing applications and stringent project requirements.

Brisbane Airport Link

Posted on November 4, 2022March 15, 2024 by Sir Gwi

Brisbane Airport Link

Brisbane Airport link is a motorway from Brisbane business district to the North East of the city in direction of the Airport. The Brisbane Airport links features

The construction of the line has been done by segments. Parts of the line are already operating. Full completion is planned by 2024.

Dextra has been involved since between 2009 and 2011 in the design, engineering and supply of large FRP Soft Eyes for TBM entry/exit points.

Prior to D-Wall construction, Dextra engineers the FRP cage design taking into account size of the TBM, margin for error, soil forces and more design parameters.

Thanks to the properties of FRP material, Tunnel Boring Machines cut through the D-Wall in a minimum time, saving time on schedule and ensuring the perfect condition of the TBM’s head.

On this project, Dextra also supplied Griptec Couplers, used as vertical connections in the D-Walls, barrette piles and tunnel superstructures. More than 80,000 Griptec couplers have been supplied for the tunnels of the Brisbane Airport Link.

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