AAOM Handbook

significant to a process if it can produce more than a few per cent impact on the delivery of the Purpose of the process. Purpose To identify the elements of the process that relate to either the underlying technical theory or the strategies employed to operate the process. Quantity One statement for each theory measure identified Quality Measurements of Theory Parameters resulting from Strategy shall be reported to the following standards;  Use of Time Single Line process NB A Single Line process is one that has only one entry and exit point for a single product (or a single entry and exit point for each separate product). If a process has a single entry and exit point but has some parallel activities within the process, it is still a Single Line process. Parallel Line process o Availability = Sum of Available Time / for each ‘Line’ / (Sum of number of installed Lines * Calendar Time) o Utilisation = Sum of Operating Time for each ‘Line’ / (Sum of number of installed Lines * Calendar Time) NB A Parallel Line process is one that has multiple, paired entry and exit points (i.e. completely separate and parallel process lines) for a single product – e.g. a fleet of mobile equipment. If a process has a single entry and exit point but has some parallel activities within the process, it is still a Single Line process.  Rate = Units of Product / MSR The MSR is defined as the 95 th percentile of the historic measured rate distribution of the process for a period that is representative of the ‘personal best’ of the process, as the process is designed today.  Quality = Units of On-spec Product / Total Units of Product  Reliability o Availability = Available Time / Calendar Time o Utilisation = Operating Time / Calendar Time