11.2.2 CONTRACTOR shall give OWNER at least ten days’ advance notice of his intention to commence COMMISSIONING of a unit or sub-unit or the whole PLANT. ON receipt of this notice OWNER shall make arrangement to ensure that his operation and maintenance personnel are available for the COMMISSIONING under the direction of CONTRACTOR’s commissioning team, provided that the numbers and qualifications of OWNER ‘s personnel required have been advised to OWNER by CONTRACTOR at least six months in advance