Cleveland TS23 4YS. Guiding principles for the proof testing of safety instrumented systems (SIS) in the chemical industry. have been developed through research into the practices of proof testing. The proof testing of SIS is an. integral component of the management of functional safety. Its purpose is to confirm the continued.
Psychology of obsession. The definition of obsession is: the inability of a person to stop thinking about a particular topic or feeling a certain emotion without a high amount of anxiety. When obsessed, an individual continues the obsession in order to avoid the consequent anxiety.
Medical Definition of INTROVERSION. 1. : the act of directing one's attention toward or getting gratification from one's own interests, thoughts, and feelings. 2. : the state or tendency toward being wholly or predominantly concerned with and interested in one's own mental lifeâcompare extroversion.edical Definition of INTROVERSION. 1. : the act of directing one's attention toward or getting gratification from one's own interests, thoughts, and feelings. 2. : the state or tendency toward being wholly or predominantly concerned with and interested in one's own mental lifeâcompare extroversion.