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Systems Engineering

Plain-language definitions of every Systems Engineering term that shows up in government contracting work.

Systems EngineeringCMMI

Capability Maturity Model Integration (CMMI)

CMMI is a process improvement framework used by defense and IT contractors to demonstrate maturity in software development, systems engineering, and service delivery, with appraisal ratings from Level 1 to Level 5.

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Systems EngineeringCDR

Critical Design Review (CDR)

A Critical Design Review is the formal technical milestone that evaluates whether a system's detailed design is complete and ready for production or fabrication, establishing the Product Baseline.

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Systems EngineeringDID

Data Item Description (DID)

A Data Item Description (DID) is a standardized government document that defines the content, format, and intended use of a specific technical data deliverable required on a government contract.

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Systems EngineeringECP

Engineering Change Proposal (ECP)

An Engineering Change Proposal (ECP) is the formal mechanism for proposing a change to an approved configuration baseline on a government contract, requiring evaluation and approval before implementation.

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Systems EngineeringFOC

Full Operational Capability (FOC)

Full Operational Capability (FOC) is the milestone at which a system's complete fielded quantity is delivered with trained personnel and full logistics support, enabling the total planned operational capacity.

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Systems EngineeringIOC

Initial Operational Capability (IOC)

Initial Operational Capability (IOC) is the milestone at which a sufficient quantity of a system is fielded, with trained personnel and adequate support, to perform a mission in an operational environment.

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Systems EngineeringIPT

Integrated Product Team (IPT)

An Integrated Product Team is a multidisciplinary team of government and contractor personnel organized around a product, subsystem, or program function to concurrently manage technical and program management issues.

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Systems EngineeringKDP

Key Decision Point (KDP)

A Key Decision Point (KDP) is a DoD acquisition milestone at which the Milestone Decision Authority makes a formal go/no-go decision on whether a program should proceed to the next phase of development.

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Systems EngineeringLRIP

Low Rate Initial Production (LRIP)

Low Rate Initial Production (LRIP) is a limited production phase that allows initial production units to be manufactured and used for operational testing before committing to full-rate production.

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Systems EngineeringPDR

Preliminary Design Review (PDR)

A Preliminary Design Review is a formal technical assessment that evaluates whether a system's preliminary design meets requirements before committing to detailed design, establishing the Allocated Baseline.

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Systems EngineeringSRR

System Requirements Review (SRR)

A System Requirements Review is the first formal technical review of a defense acquisition program that evaluates whether system requirements are complete, consistent, and feasible before design begins.

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Systems EngineeringSVR

System Verification Review (SVR)

A System Verification Review (SVR) confirms that a system has been fully tested and verified against all requirements before it is accepted by the government and transitioned to operational use.

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Systems EngineeringSEP

Systems Engineering Plan (SEP)

A Systems Engineering Plan is a contractor deliverable that describes the technical approach, processes, resources, and schedule for managing systems engineering activities on a major defense acquisition program.

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Systems EngineeringTDP

Technical Data Package (TDP)

A Technical Data Package is the complete set of engineering documentation that defines a system or component, drawings, specifications, and standards, required to reproduce, manufacture, or maintain the item.

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Systems EngineeringTIM

Technical Interchange Meeting (TIM)

A Technical Interchange Meeting (TIM) is a formal or informal meeting between government and contractor technical personnel to share information, resolve issues, and align on technical requirements or design approaches.

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Systems EngineeringTRA

Technology Readiness Assessment (TRA)

A Technology Readiness Assessment is a formal government evaluation that determines the current TRL of a program's critical technologies to support Milestone decision reviews and acquisition phase transitions.

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Systems EngineeringTRL

Technology Readiness Level (TRL)

Technology Readiness Level (TRL) is a nine-point scale used by NASA, DoD, and civilian agencies to assess the maturity of a technology from basic principles (TRL 1) through operational deployment (TRL 9).

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Systems EngineeringTRR

Test Readiness Review (TRR)

A Test Readiness Review is a formal technical gate that assesses whether a system and its test environment are prepared to begin a specific test phase, verifying that test plans, procedures, and facilities are ready.

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Systems EngineeringVE

Value Engineering (VE)

Value Engineering is a systematic analysis method used to identify and implement changes that reduce the cost of a product or service while maintaining required performance and quality on government contracts.

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