Seaports Magazine - Summer 2014 - (Page 16)

»FEATURE PLUG-INS ENABLED More ports are powering their operations from the grid, creating a new set of assumptions about cost and reliability. By Meredith Martino A supply of reasonably priced, reliable power is the No. 1 priority for large-scale electrification efforts at ports, including shore power for vessels. 16 O perating costs and efficiency are important considerations for all ports, but for the Georgia Ports Authority (GPA), the issues are especially front and center. With no private marine terminal operator responsible for terminal infrastructure or cargo handling, GPA has a direct and immediate stake in the way its cargo handling equipment performs and the costs associated with running it. Two decades ago, the port didn't like what it saw. "All of our cranes were diesel, and they were having 3.8 percent downtime," explained Rich Cox, who worked as GPA's general manager of equipment and facilities maintenance for more than 18 years before retiring last fall. "We wanted to get that downtime to less than 1 percent." When GPA began investigating electric-powered cranes, they ran into constraints, as cranes AAPA SEAPORTS MAGAZINE that utilized 480V power could only travel approximately 900 feet from the power source. When another power option became viable - in the form of a 13,800V feed to cranes - the math started to change, as the cables for the higher voltage could allow travel of up to 2,300 feet from the power source. "We purchased two electric cranes, and the reliability got better and the maintenance costs went down," said Cox. GPA made plans to convert seven more cranes from diesel to electric and implemented the change in 2000. All ship-to-shore cranes at GPA facilities are now electrified, and the port is now turning to electrifying rubber-tired gantry cranes. In 2011, the port did a demonstration project using a Conductix system, and the port now has an additional 11 electrified RTGs. Though they can still run on diesel, they

Table of Contents for the Digital Edition of Seaports Magazine - Summer 2014

Aapa Headquarters
From the President’s Desk
In Case of Emergency
Extreme Weather
Plug-Ins Enabled
Partners in Fighting Crime
Her Path Leads to Ports
U.S. Needs New Transportation Law that Improves Quality of Life, Economy
Crisis at the Port: Planning Ahead Makes the Difference
Superstorms and Rising Sea Level Present a New Challenge for Ports
Aapa Port Employee Relief Fund a Helping Hand for Those in Need
Toronto Emergency Departments Hold Joint Ice and Cold Water Training Exercises
New Sonar Solution to Protect Aruba Ports Authority
Preparedness, Resiliency and Responsiveness in Mexico
Cat Islands Restoration Strengthens the Resiliency of Port of Green Bay, Local Environment
Index of Advertisers

Seaports Magazine - Summer 2014