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Critical To Definitions

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Critical To.....

Purpose

To define all the terms used in CTX and CTY TREE as well as in the CT MATRIX concept.

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Anatomy

critical to satisfaction

Critical To Delivery - Critical To Quality - Critical To Price


Terminology

A. Critical To Satisfaction characteristic (CTS): The term CTS refers to the expression of the customers’ vital needs.

B. Critical To Quality characteristic (CTQ): The term CTQ refers to the product, service and/or transactional characteristics that significantly influence one or more CTS in terms of Quality.

C. Critical To Delivery characteristic (CTD): The term CTD refers to the product, service and/or transactional characteristics that significantly influence one or more CTS in terms of Delivery.

D. Critical To Cost characteristic (CTC): The term CTC refers to the product, service and/or transactional characteristics that significantly influence one or more CTS in terms of Cost.

E. Critical To Process characteristic (CTP): The term CTP refers to process parameters which significantly influence a CTQ, CTD and/or CTC.

CT Matrix


Purpose

Identify the relationship between elements of the process (CT Tree) and product tree (CTY tree) at all level of the product tree hierarchy. Identify potential Six Sigma projects.

Anatomy

ct matrix

Critical requirements for Quality, Delivery and Cost


Terminology

A. Element level matrix: Represents the relationship between the element level of the Product tree and the activities identified at the element level of the Process tree.

B. Activity: Represents the element level of the Process tree.

C. Element: Represents all the Critical requirements for Quality, Delivery and/or Cost identified at the element level of the Product tree.

D. Intersection point: Identifies the relationship between activity of a process and a product characteristics in terms of quality, delivery and cost at this level of the Product tree.

E. Sub-system/System/Complex level: Represents all other levels where relationship between activity of a process and a product characteristics in terms of quality, delivery and cost should be established.


Major Considerations

The definition of CTS characteristics must be understood across the organization. The main processes in the organization must be mapped and understood across the organization.

Application Cookbook

1. List in the columns all elements identified in the Product tree.

2. List in the lines all element (activity) identified in the Process tree.

3. Identify when there is a relationship between activity of a process and a product characteristics in terms of quality, delivery or cost at this level of the Product.

4. Repeat the exercise at the sub-system, system and complex level.

CTX Tree (Process Tree)


Purpose

Provide a breakdown of the processes that can lead to the identification of potential influence factors on the critical product / service characteristics.

Anatomy

CT Tree

Critical To Tree


Terminology

A. Critical requirements for Quality, Delivery and Cost are the needs translated from the Critical To Satisfaction characteristics (CTS).

B. Complex level: This is the first level of the Process Tree. It is the last process performed to deliver the product / service to the customer.

C. System level: This level is comprised of the main processes of business.

D. Sub-system level: This level represents a breakdown of the processes listed at the system level.

E. Element level: This level represents a breakdown of the processes listed at the sub-system level. Critical To Process characteristics (CTP) are identified directly below this level.


Major Considerations

The definition of CTS characteristics must be understood across the organization. The main processes in the organization must be mapped.

Application Cookbook

1. Identify the customer.

2. Identify the CTSs.

3. Translate all CTSs into product requirements in terms of CTQ, CTD and CTC.

4. Define the complex level.

5. Define all system level (main processes) that might have influence on product requirements.

6. Define all sub-system level (processes) that might have influence on product requirements. (Depending on the complexity of the process, the Process tree can have more than one sub-system level).

7. Define all element level (activity) that might have influence on product requirements.

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