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¢tum. 1. force or speed of movement; impetus, as of a physical object or course of events: a career that lost momentum. 2. Mech. a quantity expressing the motion of a body or system, equal to the product of the mass of a body and its velocity.
In physics, momentum of an object is equal to the mass times the velocity. momentum = mass * velocity. Momentum is usually abbreviated using the letter p making the equation look like: p = m * v. where p is the momentum, m is the mass, and v is the velocity. From this equation you can see that both the velocity of the object and the mass have an equal impact on the amount of momentum. You have more momentum when you are running than when you are walking.