Hydrex’s grade A approval
(Posted on 08/01/20)
Hydrex has received the approval to carry out classification certified grade A wet welding. To guarantee the required high standard of these underwater welds, NDT tests were performed by ABS surveyors before the certificate was awarded.
The certificate was given to carry out grade A groove welding underwater. Most companies with a wet welding certificate can only carry out fillet welds and this often only to grade B or C. Cavitation or corrosion damage on rudders, clad welding, rope guard repairs, mewis duct repairs, … can now be done with permanent welding.
With a class B weld an inspection of the weld is required every three months. With class A welding the deadline for an inspection is much longer. This is decided by the attending surveyor on a case by case basis.
Any required inspection will be for the underlying problem causing the damage and not for the welding work. An internal structural problem causing damage will not always be handled after the repair and will need to be followed up. For instance, doubler repairs can never be permanent because the doubler is installed over the damaged plating instead of replacing it (as is the case with insert repairs).
With class A underwater welding only a note is made stating that the affected area needs to be looked at during the next scheduled inspection. This is very important for tankers as a clean class certificate is requested by most charterers.
Even for non-class items like rope guards the certificate is useful because it shows our customers that our diver/welders can carry out high quality underwater welding work. This is very important for offshore units where high quality standards need to be verified before welding operations like doubler repairs can be performed.
Hydrex divers are not suddenly better welders. They always knew how to perform the best underwater welds. Their skills have now been officially recognized.
Latest News
GSM and Neuero launch Argentina’s first floating grain terminal
(Posted on 15/08/25)Grupo Servicios Marítimos (GSM), in partnership with Neuero, has delivered a groundbreaking solution... Read more
Welcome Maritime Wi-Fi praised in global crew survey
(Posted on 15/08/25)Elcome International’s WELCOME Maritime Wi-Fi, now marking one year of service, has emerged as... Read more
DNV and RSI complete study on decarbonising short sea dry bulk fleet
(Posted on 11/08/25)Amid increasing pressure on shipping to achieve the IMO 2050 decarbonisation targets, the Responsible... Read more
MacGregor strengthens leadership under Triton’s ownership
(Posted on 04/08/25)MacGregor continues to serve its maritime and offshore customers with its wide portfolio of cargo and... Read more
Jonas Gustavsson appointed CEO of MacGregor
(Posted on 04/08/25)The board of directors of MacGregor Group AB has appointed Jonas Gustavsson Chief Executive Officer... Read more
Liebherr collaborates with Indian terminal to streamline bulk operations
(Posted on 30/07/25)Strategic lifting capacity meets India’s east coast logistics growth. The LHM 550s selected for... Read more
Inauguration of Wärtsilä’s advanced simulators in Malaysia
(Posted on 30/07/25)A new advanced simulation suite supplied by technology group Wärtsilä for the Akademi Laut... Read more
New nuclear for maritime is a “geopolitical imperative”
(Posted on 30/07/25)The New Nuclear for Maritime European Summit, the world’s largest international summit on maritime... Read more
Steelpaint contract with Winning International to protect capsize bulker
(Posted on 21/07/25)Steelpaint GmbH has received its first order from Singapore-based Winning International Group to supply... Read more
Anemoi and Lloyd’s Register publish landmark wind propulsion paper
(Posted on 21/07/25)Anemoi Marine Technologies, a leader in wind-assisted propulsion technology, has developed an in-service... Read more
