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. In Lesson 8, linear momentum (p) was defined as the objects mass (m) times its velocity (v) using the following equation: Angular momentum (L), is the quantity of rotation a body possesses. Angular momentum can be defined as the product of the objects moment of inertia (I) times its angular velocity (Ï). Angular momentum is calculated as follows: Where (L) is the angular momentum in units (kgâm 2 /s), (I) is the moment of inertia in kgâm 2, and (Ï) is the angular velocity in r/s. Angular momentum is a vector that is defined by the right hand rule. The direction of the angular momentum vector is the same as the direction of the angular velocity vector (CCW is positive, CW is negative). The units for linear momentum are kgÂ·m 2 /s.