Tightness

Chest pain is the most common symptom of acute MI and is often described as a sensation of tightness, pressure, or squeezing.

This is especially important in the face of the tightness of resources available to the United Nations system at a time of increasing supplies of private financing.

The periodic inspection shall include an external examination, an internal examination or alternative method as approved by the competent authority, a pressure test or equivalent effective non destructive testing with the agreement of the competent authority including an inspection of all accessories (e.g. tightness of valves, emergency relief valves of fusible elements).