No Oil Spoken Here: BP’s Shafts are Oil-Free

Friday, September 05, 2003
Safer than safe could be dubbed the term that sums up the design philosophy on four 185,000 dwt Alaskan-class tankers that will soon be carrying oil along the U.S. West Coast. Currently being built in San Diego, Calif. by NASSCO, the BP Shipping-owned vessels feature the latest innovations in safe-ship design, including Thordon COMPAC water-lubricated propeller shaft bearings.

During the design phase of the vessels, BP was determined to leave no stone unturned in its quest to minimize the risk of oil leakage. This included building in multiple redundant systems, and eliminating the use of oil wherever possible. "The prop shaft is an area where, traditionally, some lubricating oil can leak into the sea," says Stan Taylor, technical manager for BP. "So we needed to look for alternatives." Traditionally, propeller shaft bearings on commercial tankers are made of white metal lubricated by oil. Although these systems work well, keeping the oil and water separate can be a challenge. If seawater contaminates the bearing area, prop shaft performance can be compromised. If oil escapes into the sea, that's pollution. "Even a small leakage from the prop shaft," says Taylor, "can result in a visible sheen when in port."

The Thordon COMPAC propeller shaft bearing systems now being installed on each of the BP vessels feature water lubrication (a renewed innovation pioneered for the 21st century by Thordon), no use of oil (and therefore zero risk of pollution), and an expected minimum 10-year bearing wear life based on systems currently in operation.

To ensure a steady supply of abrasive-free seawater to the bearings, Thordon also supplied its integrated Water Quality Package. This maintenance-free system includes pumps, flow alarms and a separator capable of eliminating particles down to 50 microns from the seawater lubricating the bearings.

Maritime Reporter September 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Wärtsilä Reshuffles Two Top Managers

The following appointments have been made in the management inform Wärtsilä Corporation: Mr Rakesh Sarin (59), B.Sc. (Eng.), has been appointed President of Power Plants,

MHI, IHI & DBJ Join Forces On Investments

Mitsubishi Heavy Industries, Ltd. (MHI), IHI Corporation and the Development Bank of Japan Inc. (DBJ) concluded a three-way formal agreement today on their respective

Voith Schneider Propellers Drive Double-ended Ferry MS Frisia IV

Ferries operated by Norden-Frisia AG have been serving the East Frisian island of Norderney for many decades. Navigation in these coastal waters poses special

Shipbuilding

RIMPAC Exercise Puts LCS Through Paces

It was the middle of May, and the littoral combat ship Independence was operating out of San Diego, testing components of the mine warfare mission package. The mission is one that,

New Superyacht ROCKIT.IT Launched by Feadship

Feadship says it has launched the outstanding 60.35-metre motoryacht ROCK.IT. Created for an experienced owner who has chartered Feadships and appreciated the essence of the brand,

FTA Approves WSF Ferry Terminal Plans

In the latest Washington State Ferries Weekly Update, Capt. George A. Capacci, Interim Assistant Secretary WSDOT/Ferries Division briefs as follows: "FTA approves

 
 
Maritime Contracts Maritime Security Maritime Standards Offshore Oil Pipelines Pod Propulsion Salvage Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1323 sec (8 req/sec)