For Mexican oil & gas industry, there exist a PEMEX corporate
standard (NRF), Fig. 2, shows the corresponding risk matrix
(PEMEX, 2008). Nomenclature regarding letters in this matrix is
described in Tables 7e9 for risk concerning the community. It is
important to mention that PEMEX corporate standard considers
environmental risks, business risks, and corporate image risks.
These are not shown here for space limitations.