ISO 14064-1 specifies principles and requirements at the
organization level for quantification and reporting of
greenhouse gas (GHG) emissions and removals.
It includes requirements for the design, development,
management, reporting and verification of an
organization's GHG inventory.

OHSAS 18000 is an international occupational health and
safety management system specification.
It comprises two parts, 18001 and 18002 and
embraces BS8800 and a number of other publications.

ISO 14000 is actually a SERIES of international standards
on environmental management. It provides a framework for
the development of both the system and the supporting
audit program.