Normally, the month of March is peak production period for meeting the targets of production for manufacturers, financial expenditure for those who ordered various machinery, etc so that they will not receive any flak from Board Directors or Finance Department.
The month of April will be somewhat a lean period, having met the targets and waiting for good news of bonus / pay increase, etc. However, it is good if all establishments plan their annual shutdowns for maintenance in April, test their equipment / vessels / material handling equipment / earthpits, etc as per statutory requirements in this month so that there will not be any question of non-availability of particular system for testing. Production department will be reluctant to release the system for examination in the second half of the year. Thus, April-May is the best period for statutory examinations and annual mainatenance.