Question $2$

$[15]$

$2\mathrm{.}1$ SDZ engineering consultancy, a mid$-$sized manufacturing company based in South Africa, looking to adopt a standard data system $($SDS$)$ for machining operations has appointed you as a work study consultant. Draft a high$-$level plan to classify work elements for milling and turning operations. Include at least $3$ examples per operation and justify the classification.

$2\mathrm{.}2$ Elaborate on the characteristics and requirements of work environments that are best served by employing standard data system.

Question $3$

$[10]$

Given the dataset, use the SDS to determine the standard time. Show all calculations and explain any assumptions.

$3\mathrm{.}1$ Determine the standard time for a batch of $50$ components, each requiring:

Setup: $15$ minutes $($once$-$off$)$

Turning: $1\mathrm{.}8$ minutes per part

Machine$-$controlled time: $0\mathrm{.}6$ minutes per part

Operator idle time during machine operation: $0\mathrm{.}3$ minutes per part

Assume a $10\%$ allowance for fatigue and personal needs.

Question $4$

$[20]$

A new semi$-$skilled operator is introduced to a repetitive assembly task. Based on prior records, the learning curve follows an $85\%$ rate. The first unit took $50$ minutes.

$4\mathrm{.}1$ Calculate the time taken to produce the $32$nd unit using the logarithmic approach.

$4\mathrm{.}2$ Graphically interpret your outcome in question $4\mathrm{.}1$ and elaborate on the shape of your graph.

$4\mathrm{.}3$ Calculate the time taken to produce the ${25}^{th}$ unit using the arithmetic approach.

$4\mathrm{.}4$ Briefly discuss the constraints benefits of using the learning curves in labour$-$intensive industries.

$4\mathrm{.}5$ Differentiate between learning and experience curves.

Question $5$

$[30]$

$5\mathrm{.}1$ Contrast the push and pull systems in a Lean context, using a South African public hospital pharmacy and a private retail pharmacy as examples. Comment on the implications for patient satisfaction and inventory levels.

$(6)$

$5\mathrm{.}2$ Lean thinking aims to remove waste from work processes. Elaborate on the types of waste with real$-$world examples.

$(14)$

$5\mathrm{.}3$ Using a real$-$world example explore the Define Phase in DMAIC

$(10)$