# 13.1 Elements of Time Management

### Intended learning outcomes: Describe the order of the operations of a production order, operation time and operation load, the elements of interoperation time, administrative time, and transportation time.

Time management is the observation, control, and manipulation of time elements. Time elements are the duration of operations, inter­operation times, and administration times.

In typical job shop production, the focus is on inter­operation times, since they make up more than 80% of the total lead time. However, in line production, observation of the duration of the operations themselves is also of particular interest.

## Course section 13.1: Subsections and their intended learning outcomes

• ##### 13.1 Elements of Time Management

Intended learning outcomes: Describe the order of the operations of a production order, operation time and operation load, the elements of interoperation time, administrative time, and transportation time.

• ##### 13.1.1 Sequence of Operations and Network of Operations — The Order of the Operations of a Production Order

Intended learning outcomes: Describe a sequence of operations. Differentiate between a directed and an undirected network of operations. Identify a synchronization point.

• ##### 13.1.2 Operation Time and Operation Load

Intended learning outcomes: Present the simplest formula for operation time using a graphic representation. Explain the simplest formula for operation load.

• ##### 13.1.3 The Elements of Inter­operation Time

Intended learning outcomes: Identify the elements of interoperation time. Differentiate between technical wait time and nontechnical wait time. Describe transportation time.

Intended learning outcomes: Describe the need and the various kinds of administrative time.

• ##### 13.1.5 Transportation Time

Intended learning outcomes: Explain the transportation times matrix. Disclose a robust approximation of transportation time.

## Course 13: Sections and their intended learning outcomes

• ##### Course 13 – Time Management and Scheduling

Intended learning outcomes: Present the elements of time management. Explain in detail knowledge on buffers and queues. Disclose scheduling of orders and scheduling algorithms. Describe splitting and overlapping.

• ##### 13.1 Elements of Time Management

Intended learning outcomes: Describe the order of the operations of a production order, operation time and operation load, the elements of interoperation time, administrative time, and transportation time.

• ##### 13.2 Logistic Buffers and Logistic Queues

Intended learning outcomes: Explain wait time, buffers, the funnel model, and queues as an effect of random load fluctuations. Present conclusions for job shop production. Produce an overview on logistic operating curves.

• ##### 13.3 Scheduling of Orders and Scheduling Algorithms

Intended learning outcomes: Describe the manufacturing calendar and the calculation of the manufacturing lead time. Differentiate between Backward Scheduling and Forward Scheduling. Explain network planning, central point scheduling, the lead-time stretching factor, and probable scheduling. Present scheduling of process trains.

• ##### 13.4 Order Splitting, Order Overlapping, and Extended Scheduling Algorithms

Intended learning outcomes: Explain order or lot splitting, and overlapping. Present an extended formula for manufacturing lead time and extended scheduling algorithms.

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• ##### 13.7 Scenarios and Exercises

Intended learning outcomes: Assess queues as an effect of random load fluctuations. Calculate examples for network planning, backward scheduling, forward scheduling, the lead-time stretching factor, and probable scheduling.

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