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 Today

The Maritime Industry's original and most viewed E-News Service

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

Marine Propulsion

Windrock Names Kelleher Global Business Development Manager

Edward P. Kelleher will be assuming the new role of Global Business Development Manager – Diesel, effective December 1st.   In this role, Mr. Kelleher will be

Deltamarin to Designs First LNG Handysize Bulk Carriers

Deltamarin Ltd proudly announces that it has signed a contract to design the world’s first LNG handysize bulk carriers, which will point the way towards greener shipping of commodities.

Rolls-Royce to Exhibit Power Offerings at WorkBoat

Rolls-Royce will showcase its latest marine power innovations, including several MTU commercial marine products and systems, at the International Workboat Show 2015, December 1-3 in New Orleans.


BIMCO Signs New LNG And Shipbuilding Supervision Contracts

The twice yearly meeting of BIMCO’s Documentary Committee took place in Hamburg on 19 November. In his first meeting as Chairperson of the Committee, Belgium’s

Damen Marine Components Opens Jiangyin Plant

Damen Marine Components (DMC) is proud to announce the opening of its brand new facility in Jiangyin, China.Those present at the opening ceremony included CEO

Henriksen Unveils Strongest SOLAS Boat Lifting Hook

H Henriksen of Norway has received SOLAS certification for a new off-load single-point boat lifting hook capable of holding up to 22.5-tonnes. The quick release

Maritime Careers / Shipboard Positions Maritime Standards Offshore Oil Pipelines Pod Propulsion Port Authority 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: 0.0770 sec (13 req/sec)