Crossing oceans of engineering challenges

By David Wagman
Managing Editor, Power Engineering

As companies search for ways to keep costs low and stay competitive, the shipping industry has met the challenges of shipping expensive, large and sensitive power plant parts from the factories to the destination's ports.

Dockwise Shipping is a Netherlands-based shipping company with a fleet of 15 semi-submersible heavy transport vessels (HTV). The vessels are used to ship fully-erected cargo, which allows fabricators to build units in cost-effective countries. The current maximum load that can be shipped is over 70,000 metric tons (154 million pounds). Most cargoes shipped by Dockwise are much smaller but still require significant engineering to make the transportation feasible.

After the stability of the ship-cargo combination has been checked and the transportation route has been laid out, engineers determine the design environmental conditions for which the transport has to be designed. Elements such as wave height and wind speed parameters serve as input for calculations that model the expected motional behavior of the ship. The motions and accelerations finally define the amount of external sea fastening and eventual internal reinforcements in the cargo that are required to make the trip safe and successful.

For the power industry, several power barges and fuel barges have been shipped by Dockwise. These barges are loaded onto the HTV by submerging the HTV, floating the barge over the deck and then deballasting the HTV. The cargo rests on a layer of soft wooden cribbing beams, positioned under the strong parts of the cargo, such as bulkheads, web frames and stiffeners. If a cargo is non-floating, such as heat recovery steam generators, it can be rolled, skidded or lifted onto the HTV deck.

Sponsored by FLSmidth

Related Articles

Harvard Law professor says Clean Power Plan is unconstitutional

Laurence H. Tribe, professor of constitutional law at Harvard University and former mentor to Barack Obama, said in an article last week that the EPA’s Clean Power Plan is unconstitutional.

UMaine in business of certifying turbine blades

ORONO, Maine (AP) — The University of Maine has tested its largest wind turbine blade to date.

UMaine's Advanced Structures and Composites Center completed static strength testing this month of a 184-foot-long wind turbine blade built in North America for a Spanish company.

Follow Power Engineering on Twitter
Latest News
Sendai nuclear Unit 1 in Japan connects to power grid Kyushu Electric Power Co.

Sendai nuclear Unit 1 connects to grid

The Sendai 1 nuclear power unit in Japan is expected to reach commercial operations, almost t...
EPA allows one claim to stand in Sierra Club appeal of Schiller air permit

EPA allows one claim to stand in Sierra Club appeal of Schiller air permit

U.S. Environmental Protection Agency (EPA) Administrator Gina McCarthy signed a July 28 order...
Western states win injunction against ‘Waters of the United States’ rule

Western states win injunction against ‘Waters of the United States’ rule

A federal judge in North Dakota on Aug. 27 granted a request by Colorado and twelve other sta...
Exelon-Pepco release statement, say D.C. Public Service Commission failed to see merger's 'substantial' customer benefits

Exelon-Pepco: Regulators failed to see merger's 'substantial' customer benefits

Despite a unanimous rejection from regulators in the nation’s capital, power companies Exelon...
Makai’s plant will generate 100 kW of sustainable, continuous electricity – enough to power 120 homes in Hawaii each year.

Makai Ocean Engineering connects world's largest OTEC plant to U.S. grid

Makai’s plant will generate 100 kW of sustainable, continuous electricity – enough to power 1...
Canadian Solar sells stake in Tranquility solar power project in California to Southern Power

Canadian Solar unit sells solar power project stake to Southern

Canadian Solar Inc. said its subsidiary sold its ownership stake in a 200-MW solar power proj...
Plant Vogtle construction costs down in first half 2015

Plant Vogtle nuclear expansion spending down in first half of 2015

Georgia Power said in a report that the utility estimates it will spend less on construction ...
Renewable energy developer Cypress Creek Renewables building 2 utility-scale solar farms in South Carolina

Renewable energy developer Cypress Creek Renewables building 2 utility-scale solar farms in South Carolina

Cypress Creek Renewables is investing more than $20 million in new projects in South Carolina.

Power Engineering Current Issue

03/01/2014
Volume 118, Issue 3
1403PE-cover
Products Showcase
Dynamic Fluoride Ion cleaning DFIC of industrial natural gas turbines Hi-Tech Furnace Systems

Dynamic Fluoride Ion Cleaning of IGT Parts

The Dynamic Fluoride Ion Cleaning (DFIC) Process from Hi-Tech Furnace Systems is able to clean deep, narrow cracks of oxides by cycling between negative, atmospheric, and positive pressure.

Archived Articles

2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013

Power Industry Wire News

EnerJex Resources Declares Monthly Cash Dividend on 10% Series A Preferred Stock

EnerJex Resources Declares Monthly Cash Dividend on 10% Series A Preferred Stock

Poll Shows Americans United in Need for Police Body Cameras: Vast Majority of Americans Prefer 2nd Generation Police Body Cameras

Poll Shows Americans United in Need for Police Body Cameras: Vast Majority of Americans...

Sunergy Management and Its IPP Partner Has Received an Invitation From the Government of Liberia to Attend the US-Liberia Trade and Investment Forum Held in NY on September 16

Sunergy Management and Its IPP Partner Has Received an Invitation From the Government o...

UGE International and Alpha Energy to Collaborate on Microgrid Projects

UGE International and Alpha Energy to Collaborate on Microgrid Projects

Mid-Atlantic Aviation Partnership to Explore Tethered Drone Commercialization With Drone Aviation Holding Corp.

Mid-Atlantic Aviation Partnership to Explore Tethered Drone Commercialization With Dron...

Power Engineering

Article Archives for Power Engineering Magazine

Continuing Education

Professional Development Hours

To access a course listing associated to a specific topic listed below, click on the topic of choice from the list below.

Latest Energy Jobs

View more Job Listings >>