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.
Angular momentum is a vector quantity (more precisely, a pseudovector) that represents the product of a body's rotational inertia and rotational velocity about a particular axis.elocity of the particle m with respect to the origin O can be resolved into components parallel to (v //) and perpendicular to (v â¥) the radius vector r. The angular momentum of m is proportional to the perpendicular component v â¥ of the velocity, or equivalently, to the perpendicular distance r â¥ from the origin.