Segregation commonly refers to the deliberate separation of items, activities, systems, or responsibilities so they do not improperly mix, interfere, or create control gaps. In manufacturing and regulated operations, the term is often used for physical separation of materials and product states, logical separation of data or systems, and organizational separation of responsibilities.
What counts as segregation depends on the context. It can include separating conforming and nonconforming material, keeping different lots or part numbers apart, isolating clean and dirty areas, restricting network zones, or dividing duties so one person does not control an entire approval or release process. The core idea is controlled separation to reduce the chance of error, contamination, misidentification, cross-use, or unauthorized action.
Segregation does not necessarily mean permanent isolation or complete independence. It usually means there is a defined boundary, control, or handling rule. For example, material may be segregated by location, container, status label, transaction state in MES or ERP, or user permissions in a software system.
Where it appears in operations
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Material segregation: separating raw materials, WIP, finished goods, quarantined stock, rejected parts, or customer-owned material.
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Status segregation: keeping accepted, on-hold, and nonconforming items distinct in both physical storage and system records.
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Process segregation: separating operations or environments to avoid cross-contamination or unintended process mixing.
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Data or system segregation: separating networks, applications, tenants, or records based on function, sensitivity, or access rules.
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Segregation of duties: assigning approval, execution, review, and release activities to different roles where control independence matters.
Common confusion
Segregation vs isolation: isolation usually implies stronger or more complete separation. Segregation may allow controlled movement or interaction across a boundary.
Segregation vs traceability: traceability records what happened and where items came from or went. Segregation keeps items or actions separate in the first place.
Segregation vs quarantine: quarantine is a specific hold status or controlled area. It is one form of segregation, not the whole concept.
Segregation vs access control: access control manages permissions. It can be one mechanism used to enforce segregation in software or data environments.
Manufacturing example
A plant may segregate nonconforming parts in a marked hold area, keep those parts in a separate inventory status in MES or ERP, and limit disposition authority to designated quality roles. Each of those controls is a form of segregation applied to a different part of the operation.