Types of Visual control.
1. Colour Coding
In which we apply colour to indicate status, is the simplest sort of visual controls to implement. It helps staff to quickly choose what action to do next after it is deployed. Color-coding guidelines in the workplace will assist to guarantee a consistent look throughout the company. E.g. HACCP chart, wire diagram, area maps colour coding as per population /pollution index.
Effectiveness- For coding visual information on a display, colour is perhaps the most effective, convincing, and eye catching method available.
An "Andon" system is one that informs management, maintenance, and operators to a quality or process issue. Part shortages, manufactured or found faults, tool/machine failure, or the presence of a safety issue are all common Andon triggers. E.g. a manufacturing equipment could have three caution lights.
Effectiveness- When a problem is discovered during a process, it lets a worker quickly stop production and request for assistance. Where raising an Andon flag implies the process will not proceed to the next phase until the issue is rectified.
3. Standard Work
Standard Work gives structure and consistency to employees at all levels, allowing them to improve their productivity and effectiveness. The process of creating standard work guarantees that workers are aware of all of their "must-do" duties and allots the most suitable amount of time to perform them, contain 4 elements- content, Sequence, timing & outcome. E.g. work Instruction, control plans.
Effectiveness- To produce the correct & consistent result for long terms E.g. Quality product in manufacturing.
4. Floor Line Marking & Signage
Pathways, vehicle lanes, worker cells, and crossroads are all marked by floor line markings and signs. Color-coded floor markings, as well as signs with various logos and markings, are used to make them simply and rapidly recognized. E.g. floor demarcation, waste bin colour coding as per type of waste dump, signage at construction side or production floor, Kamishbai Board + Tee Cards, OSHA safety chart.
Effectiveness- Visual controls such as floor markings and signs specify where materials and people should move, establishing a safety culture without disrupting the industrial process, reduce transport or motion waste, helps in maintaining 5S at location. Increase safety awareness in employee whether the shop floor, on road, in hospital Etc.
5. Quality Standards
Having product quality standards provides your operators with a visible control on which to make their judgments when deciding quality. Operators should have access to these standards for simple reference. When used in the quality control process, visual controls assist to decrease faults and eliminate quality control inspections. E.g. Do & Don't with picture based display.
Effectiveness- To support visual management goals- Quality standard visual controls are used to assist your company detect wastes, reduce the time it takes to discover information and materials, and build a continuous improvement culture of Plan, Do, Check, Act.