ISO 14001:2004 Document Control System

Documents required by the environmental management system and by this international standard shall be controlled. Records are a special type of document and shall be controlled in accordance with the requirements given in 4.5.4 (Control of Records).
The organization shall establish, implement, and maintain a procedure(s) to
a) approve documents for adequacy prior to issue;
b) review and update as necessary and re-approve documents;
c) ensure that changes and the current revision status of documents are identified;
d) ensure that relevant versions of applicable documents are available at points of use;
e) ensure that documents remain legible and readily identifiable;
f) ensure that documents of external origin determined by the organization to be necessary for the planning and operation of the environmental management system are identified and their distribution controlled; and
g) prevent the unintended use of obsolete documents and apply suitable identification to them if they are retained for any purpose. [ISO 14001, 4.4.5]
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