Labour costs

The planned method of manufacture, known as the process and mini statement of work, will form the basis of the labour cost. It will initially be generated in man-hours. This activity is undertaken via the Work Measurement Group who are part of the Production Engineering Department. Their task is to measure in man hours, the length of time required to complete the activity identified in each of the planned operations. Each of the operation times will conform to British Standards, thereby making sure that the values are accurate and consistent and this will be done for all of the parts within the assembly.

The measurement system used to generate these man-hours is based on the development of synthetics. Synthetics are tables and formulae derived from the analysis of accumulated work measurement data, arranged in a form suitable for building up standard time, machine processing times etc. by syntheses. Syntheses are a technique for establishing the time for a job, at a defined level of performance by totalling individual element times. These element times being obtained from time studies on other similar jobs. Pre-determined motion time system (PMTS) is a work measurement technique whereby times are established for a job at a defined level of performance. The advantage of such a system is the consistency of the output irrespective of the aircraft project being measured.

Man-hour estimates are derived and presented in terms of run and set-up times providing the basic values. Set time relates to a one off cost associated with the manufacture of a quantity of the same component known as the batch size. For example, the prime machine used for the manufacture of the Wing Rib will require the tooling specific to that part and the tooling carousel loaded with the cutters prior to the loading of the first component billet.

The batch size is linked to the customer delivery programme. The availability of the facility is balanced against other projects, but the batch should be of a size that is cost efficient. The run time relates to the repetitive activity performed for each component in the batch.

<== попередня сторінка	\|	наступна сторінка ==>
Recurring costs within the manufacture process	\|	Converting data into a Cost

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