"Since there was a loud noise, there may be a chance that gas got consolidated in the water ballast
since welding is done using two different gases.
In addition, for lane closures, the merging taper can use water ballast
channelizing barricades, with the barrier placed beyond the transition area.
IMO (International Maritime Organization) requires the use of a PSPC certified coating for water ballast
Each crane weighs hundreds of tonnes, so the transport ship needs to be balanced by water ballast
as the cranes are removed in order to keep its height above the water line constant.
In the marine environment, and particularly in sea water ballast
tanks, corrosion control can be challenging due to the harsh conditions to which the metals are subjected.
"Obviously having the water ballast
on the wrong side can be quite dangerous - which happened now and again but we diligently pumped it back to where it belonged.
Earlier this year, Alinghi, owned by biotech tycoon Ernesto Bertarelli, broke with America's Cup tradition by launching a 90-foot catamaran with an engine to trim its gigantic sails and move water ballast
from one hull to another.
To salvage the ferry, water ballast
will first be pumped into the vessel until it is in an upright position.
The Water Barrier Manufacturers Association is the premier national association representing plastic water ballast
Firefighters from the city's Pilgrim Street Station used winches to pull the scaffolding back into place and hose reels to fill a water ballast
to weigh the tower back down.
``Additional fresh water ballast
has been added to the double bottom to bring the section to an even keel trim.