This incident was not unique. Fatalities from welding and hot work are often are associated with confined spaces and the areas adjacent to these confined spaces . The CSB has identified over 60 fatalities since 1990 due to explosions and fires from hot work activities on tanks, which are, of course, confined spaces.
moÂ·menÂ·ta (-tÉ) or moÂ·menÂ·tums. 1. Symbol p Physics A quantity used to measure the motion of a body, equal to the product of the body's mass and its velocity. Also called linear momentum. 2.
In physics, the momentum of an object is the amount of energy it  has moving in a direction. It is a product of its mass (weight) and  its velocity (speed and direction) as â¦ in (momentum = Mass times  velocity). Momentum changes when speed is increased or decreased,  its direction changes, or its mass changes.   An example of changing momentum is an object in space such as a  meteor falling to the earth.