Hydrex Performs Underwater Stern Tube Seal Repair

SeaDiscovery.com
Thursday, October 03, 2013

In August, the stern tube seals of a 67-meter, 2223 grt anchor handling vessel were replaced in Port Gentil by a Hydrex team of diver/technicians. The old seals were damaged and a fast repair was therefore necessary. The team carried out the entire operation on-site and underwater with one of the company’s flexible mobdocks. This saved the owner an unscheduled trip to drydock.

All Hydrex offices have fast response centers. These are equipped with the latest facilities, equipment and tools to increase speed of service. Special flight containers are used to transport the lightweight flexible mobdocks. This allowed for a very fast mobilization and a timely arrival of the Hydrex team in Port Gentil.

First the diving team set up a monitoring station. Next the actual operation started with a thorough underwater inspection of the stern tube seal assembly. This revealed that a fishing net had become tangled around the assembly.

The team detached the rope guard of the vessel and removed the fishing net from the liner. The divers then set-up the flexible mobdock around the stern tube seal assembly thus creating a dry underwater environment. It allows the divers to perform any necessary work on the assembly in conditions similar to a drydock. This is essential because stern tube seal repairs cannot be carried out in the wet. Next the team disconnected the split ring and brought it to the surface. After cleaning the entire assembly, the divers removed the first stern tube seal. A new seal was then installed and bonded. The other three damaged seals were then replaced following the same procedure.

Pressure tests were then carried out with positive results after which the flexible mobdock could be removed and the rope guard reinstalled. This wrapped up the operation.

For almost twenty years Hydrex has carried out repairs and replacements on stern tube seals on-site and underwater. Hydrex said it constantly invests in the research necessary to keep developing new repair techniques and evolving existing procedures. This has made it possible for Hydrex divers to perform permanent repairs to all parts of the underwater ship propulsion system in drydock-like conditions.

For many years Hydrex's technical department has been dealing with all kinds of circumstances in locations around the world. This enabled Hydrex's team in Port Gentil to perform the seal repair under the strictest safety regulations, to the highest quality standards and without any delay.

Maritime Reporter June 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

AVEVA, DNV GL's Sesam Integration Cuts Cost

Integration of Aveva and DNV GL's Sesam Reduces Costs in Maritime and Offshore Engineering. Engineers designing ship hulls and offshore floaters can now save

FORAN for Pertamina's Future Ships

FORAN has been chosen by state-owned company PERTAMINA to review the design of their future oil product carrier ships, under construction in a shipyard with the FORAN System.

Ship Repair & Conversion

MSC Geneva Gets Fatter

A revolutionary new option to scrapping for younger panamax containerships deemed too small for a tradelane involves widening the vessel rather than adding length.

Record Bulk Shipping Demolition Rates in 1H15

Monthly demolition rates in the dry bulk shipping sector averaged 3.3 million DWT for 1H15, according to new figures from BIMCO, compared to 1.3 million DWT last year.

Silversea Cruises Plans New Flagship

Cruise operator Silversea Cruises has unveiled its new flagship, the Silver Muse, which will begin sailing the seas in April 2017.    Built by Italian shipbuilding company Fincantieri,

News

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

AVEVA, DNV GL's Sesam Integration Cuts Cost

Integration of Aveva and DNV GL's Sesam Reduces Costs in Maritime and Offshore Engineering. Engineers designing ship hulls and offshore floaters can now save

FORAN for Pertamina's Future Ships

FORAN has been chosen by state-owned company PERTAMINA to review the design of their future oil product carrier ships, under construction in a shipyard with the FORAN System.

Underwater Engineering

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

Technip Samsung JV Wins 2 FLNG Project Contracts

The Browse project covers the realization and installation of three FLNG units to develop the Brecknock, Calliance and Torosa fields in the Browse Basin, 425 kilometers North of Broome,

Fjords Processing Bags Johan Sverdrup Contracts

Fjords Processing, headquartered in Norway (Fornebu), has won three contracts for the deliveries of process systems for the Johan Sverdrup development in the North Sea.

 
 
Maritime Careers / Shipboard Positions Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1758 sec (6 req/sec)