Identify
Name the document, revision, date, owner, and effectivity.
GUIDE DMS-C / CONFIGURATION CONTROL
Keep Configuration Connected to Production
Configuration control is the discipline that identifies what product definition applies, who may change it, where the change takes effect, and which records prove what was actually built.
Name the part, quantity, controlling material or process, and required date. Specification fit is reviewed before capacity or timing is stated.
CONFIGURATION ANSWER
What does configuration control prevent?
It prevents a convenient file, substitution, bench fix, or informal instruction from creating an unapproved product variant.
REQUIREMENTREVISIONWORKEVIDENCERELEASE
AUTHORITY HIERARCHY
When sources disagree, the line needs a rule.
List every source that can influence the product: CAD, drawings, BOM, specification, software, work instruction, approved-source record, physical reference, and contractual acceptance language. Then define the authority hierarchy and conflict process.
Resolve
Route conflicts to the role authorized to interpret or revise the definition.
Propagate
Update affected work, material, inspection, test, and records before release.
CHANGE TYPES
Do not collapse every exception into one bucket.
| Change type | Use | Control question |
|---|---|---|
| Approved alternate | Pre-authorized material or component choice | What conditions and effectivity apply? |
| Deviation | Temporary departure for identified units or lots | Who accepts the risk and disposition? |
| Engineering change | Controlled revision to product definition | Which documents, inventory, and work update? |
| Rework instruction | Authorized method to restore a nonconforming unit | What inspection proves the result? |
EFFECTIVITY
A change is incomplete until its boundary is clear.
- Product boundaryPart, assembly, software state, unit, lot, or configuration affected
- Time boundaryRelease date, work order, serial, lot, or other effective point
- Material boundaryExisting inventory, purchase orders, issued kits, and work in process
- Evidence boundaryDocuments and records that must carry the updated state