4 In a typical 7-day period, the planning department of the pizza company programs its ‘Pizzamatic’

machine for 148 hours. It knows that changeovers and set-ups take 8 hours and breakdowns average 4 hours each week. Waiting for ingredients to be delivered usually accounts for 6 hours, during which the machine cannot work. When the machine is running, it averages 87 per cent of its design speed.

An inspection has revealed that 2 per cent of the pizzas processed by the machine are not up to the company’s quality standard. Calculate the OEE of the ‘Pizzamatic’ machine.