the practices, methods and acts engaged in or approved by an organisation
who in the conduct of its undertaking exercises that degree of diligence,
prudence and foresight reasonably and ordinarily exercised by skilled and
experienced professional contractors engaged in the same type of
undertaking under the same or similar circumstances and conditions and in
accordance with generally accepted industry and professional standards
and practices including but not limited to the highest standards (including
any relevant Australian, British, American or other international standard)
and techniques.