Coastal Oceans Ports and Rivers Institute
of the
American Society of Civil Engineers
Announces
Topic: Weight and CoG Issues with Floating Structures
Presenters: Dr. Allan Magee, Technip USA – Spars 101 - How Weight and CG affects Spar Stability
Bruce Zurbuchen, BP Operations' Marine Team – Weight Management
of Floating Structures
Location: Technip USA Inc.
11700 Old Katy Road, Suite 150
Houston, TX 77079
(281) 870-1111
Directions: 1-10 at Kirkwood (North side of I-10), First Floor Conference Center
Date: Tuesday, Feb 26th, 2008.
Time: 4:00 p.m. to 6:00 p.m.
Price: $10 at the door (ASCE membership not required to attend)
Note: Participants receive credit for 2 Professional Development Hours (PDHs)
Weight and center of gravity are major considerations on floating structures. They are significant factors in determining available payload and platform stability. Failure to accurately predict them can cause major problems in fabrication, transportation, installation, and operation. Prediction errors can also incur regulatory penalties that affect the platform’s operability over the life of the structure. Despite the criticality of weight and CoG prediction, it can easily become a pitfall for a project engineer, especially if project participants don’t fully understand their criticality. This meeting of the DIF will focus on understanding the subtle impacts of weight and CoG on floating structures and methods of accurately managing them. “Spars 101” will discuss how weight and CoG affect hull stability as well as the unique aspects of the spar hull design and its sensitivity to these factors. This will be followed by “Weight Management of Floating Structures” which will discuss weight and CoG prediction, tracking changes, and regulatory issues.
Dr. Allan Magee earned his BSE in Engineering Physics from the University of Arizona in 1984. He then received his MSE in Naval Architecture and Marine Engineering from the University of Michigan in 1986. Allan obtained his PhD in Naval Architecture and Marine Engineering from the University of Michigan in 1991. His thesis was “Large-Amplitude Ship Motions in the Time Domain”. Allan spent 7 years as a research engineer at the Bassin d'Essais des Carenes (French model basin), in Normandy, France working on the development of numerical analysis tools and model testing. He then spent 9 years as an engineer on various Spar projects for Technip USA in Houston, TX. Allan is the Lead Engineer for Spar Sizing & Configuration, Global Performance Analysis, Stability & Weight Management, Model Testing, Installation, and the Marine Operations Manual.
Bruce Zurbuchen graduated from UC Berkeley in 1984 with a BS in Naval Architecture. He has worked for 23 years in weight and stability management. Bruce started at Mare Island Naval Shipyard working on Nuclear Attack Submarines. He then moved to Houston 14 years ago and has worked for Han-Padron Associates, the Shell TLP hull design teams, Amoco Marlin TLP, ExxonMobil Kizomba A and B TLPs, and Conoco Magnolia TLP. Bruce is currently with BP Operations' Marine Team facilitating Weight and Stability issues on their 7 GoM assets.
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