A control plan should document which of the following elements?

A control plan should document which of the following elements?

• A. The control plan should include the project budget and resource allocations.
• B. Process characteristics, measurement methods, sample sizes, reaction plans, and special controls needed to maintain control.
• C. A list of all customers and their requirements.
• D. The company mission statement.

Answer: (B)

A control plan is a live document that specifies how a process will be monitored and kept in a state of control to meet design and customer requirements. The best choice includes process characteristics that must be controlled, measurement methods to use, how many samples to inspect (sample sizes), the reaction plans if results go out of spec, and any special controls needed to maintain that control. This combination ensures you know what to measure, how to measure it, how much data to collect, what actions to take when something deviates, and any extra controls like special gauges or environmental limits that keep the process stable. For example, for a machining step you might document the critical diameter, the caliper or CMM method, a specific sample size per batch, the immediate stop-and-investigate or rework steps if measurements exceed tolerance, and any temperature controls or fixture checks required to prevent drift. Other options fall outside the control plan’s scope: budgets and resource allocations relate to project management, a list of customers and their requirements belongs to planning or VOC/requirements management, and the company mission statement is an organizational element, not a process-control document.

A control plan is a live document that specifies how a process will be monitored and kept in a state of control to meet design and customer requirements. The best choice includes process characteristics that must be controlled, measurement methods to use, how many samples to inspect (sample sizes), the reaction plans if results go out of spec, and any special controls needed to maintain that control. This combination ensures you know what to measure, how to measure it, how much data to collect, what actions to take when something deviates, and any extra controls like special gauges or environmental limits that keep the process stable. For example, for a machining step you might document the critical diameter, the caliper or CMM method, a specific sample size per batch, the immediate stop-and-investigate or rework steps if measurements exceed tolerance, and any temperature controls or fixture checks required to prevent drift. Other options fall outside the control plan’s scope: budgets and resource allocations relate to project management, a list of customers and their requirements belongs to planning or VOC/requirements management, and the company mission statement is an organizational element, not a process-control document.