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 March 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Change of Management at Yanmar

Having reached the age of retirement, Geert Jan Mantel will resign from his position as President of Yanmar Europe B.V. as per June 30, 2014, a position he has occupied since April 1, 2002.

LNG Bunkering Will Develop Fast - LR Study

Lloyd's Register’s (LR) LNG Bunkering Infrastructural Survey 2014 indicates that major ports around the world are either planning for, or are anticipating, the wide-scale development of LNG bunkering.

Rolls-Royce congratulates US Navy on christening of USS Zumwalt

Rolls-Royce congratulated the US Navy on the christening of the USS Zumwalt, the first of its new and highly sophisticated DDG 1000 multi-mission destroyer class of ship.

Shipbuilding

Shipbuilding: Vigor Industrial Grows Stronger

Vigor Industrial has ballooned from a modest shipyard in Portland, Oregon, to the largest shipbuilder in the Pacific Northwest and Alaska. Vigor increasingly thinks big and builds big.

Q-Max Floating Dock Launched

On March 21, 2014, senior management from N-KOM and Nakilat attended the launching and naming ceremony of N-KOM’s Q-Max sized floating dock at Hyundai Samho Heavy Industries in South Korea.

US Sens. Kaine and Reed Visit Newport News Shipbuilding

Huntington Ingalls Industries (HII) hosted U.S. Sens. Tim Kaine (D-Va.) and Jack Reed (D-R.I.) Tuesday for a tour of the company's Newport News Shipbuilding division.

 
 
Maritime Standards Naval Architecture Navigation Pod Propulsion Salvage Ship Electronics Ship Repair Ship Simulators Sonar Winch
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: 0.1066 sec (9 req/sec)