ACMA Completes Strength Analysis for Temporary Hull Repair

Thursday, January 29, 2004
Alan C. McClure Associates (ACMA), one of the industry’s premier naval architecture and engineering firms, recently completed strength analysis of the tank bottom plating of an FPSO for a large oil company. ACMA’s analysis focused primarily on the effectiveness of repairing corroded shell plating with Intelligent Engineering’s Sandwich Panel System (SPS). “Utilizing our advanced Finite Element Analysis (FEA) capabilities, we examined the vessel hull to evaluate repair alternatives to the corroded shell plating,” noted principal structural engineer Peter Marucci. “We loaded the model with hydrostatic and hydrodynamic pressures that the hull would experience from still-water and wave-induced bending moments.” Because it’s vital to examine all material and environmental variables to predict real-time performance, ACMA evaluated multiple models to determine stresses and loads within the FPSO tank. Similar analyses can also be performed for hull structural members to determine stresses during design and later during repairs for critical and ‘hot’ areas that are especially important for barges, cargo ships and all marine vessels. The Sandwich Panel System (SPS), developed by Intelligent Engineering, is a technology that permits repairs without hot work inside the tank, allowing the vessel to remain in service. “Based on our modeling of the proposed repair sites, stress was shown to be significantly reduced using the sandwich paneling,” Marucci explained. Although quicker and more efficient, the SPS repair isn’t permanent. However, it does substantially extend the working time for the vessel and, in this case, appeared to be the best solution available until resources would allow for a more thorough repair and/or restoration. “There are a number of tankers in service today that are experiencing structural problems in areas where a high level of corrosion has occurred,” says ACMA Vice President Darrel Harvey. “Our advanced analytical capabilities and extensive shipyard experience gives ACMA a pronounced advantage in providing our clients with unbiased, third-party analysis of these kinds of challenges, as well as the ability to recommend the most cost-effective solutions.”
Maritime Reporter June 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Ship Repair & Conversion

AOD Orders 2 Jack-up Rigs at CSSC Huangpu Wenchong

CSSC Huangpu Wenchong Shipbuilding Company has won an order to build a pair of jack-up drilling rigs for Alliance Offshore Drilling (AOD), subsidiary of Hong Kong-listed TSC Group.

Tanker Converted to LNG-electric Propulsion

Bergen Tankers’ 95-meter-long chemical and product tanker Bergen Viking has returned to service following its conversion from diesel-electric to liquefied natural gas (LNG)-electric propulsion.

Australian Navy Awards In-service Support Contract

The Australian Government informs it has awarded a $60.6 million in-service support contract for maintenance of the Bay-Class Landing Ship Dock, HMAS Choules, over the next two years.

Maritime Security

Austal Starts Next US Littoral Combat Ship

Austal and the U.S. Navy held a keel-laying ceremony today for the future USS Manchester (LCS 14), marking the first significant milestone in its construction.

China Oil Rig Returns Off Vietnamese Coast

China has again deployed the Haiyang Shiyou 981, a semi-submersible oil platform which caused a standoff between Chinese and Vietnamese vessels last year, to the disputed South China Sea region,

Chinese Submarine Docked in Karachi ?

The intervention of China in the Arabian Sea is increasing with each passing day. China's deadliest attack submarine crept past Indian waters and docked in Karachi.

 
 
Maritime Contracts Maritime Security Naval Architecture Offshore Oil Pod Propulsion Port Authority Ship Electronics Ship Repair 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: 0.0788 sec (13 req/sec)