Chapter 25 — Engineering Specification Governance¶

25.1 Purpose¶

This chapter establishes the governance framework for Engineering Specifications within the Engineering Intelligence Platform.

Engineering Specifications constitute the primary normative engineering artefacts used to realize the approved Governance System through controlled Engineering Baselines.

This chapter defines their authority, structure, lifecycle, identification, approval process, and relationship to constitutional governance.

25.2 Definition¶

An Engineering Specification (SP-xxx) is a controlled engineering document that defines technical requirements, interfaces, behaviors, constraints, or implementation details for engineering realization.

Engineering Specifications implement constitutional governance but shall not modify constitutional governance.

25.3 Authority¶

Engineering Specifications derive their authority from:

Engineering Constitution
        │
        ▼
Approved Governance System
        │
        ▼
Engineering Baselines
        │
        ▼
Engineering Specifications

Specifications are authoritative engineering artefacts but are subordinate to the Engineering Constitution.

25.4 Initial Specification¶

The initial Engineering Specification is:

SP-000 — Engineering Specification Master Index

SP-000 shall:

establish the Engineering Specification taxonomy;
assign Specification identifiers;
define specification categories;
provide the authoritative index of all Engineering Specifications.

No Engineering Specification shall exist outside the SP-000 hierarchy.

25.5 Scope¶

Engineering Specifications may include, but are not limited to:

System Specifications
Hardware Specifications
Software Specifications
Interface Specifications
Security Specifications
Verification Specifications
Configuration Specifications
Manufacturing Specifications
Service Specifications
Operational Specifications

Additional specification categories may be introduced under SP-000.

25.6 Engineering Specification Lifecycle¶

Each Engineering Specification shall progress through the following lifecycle.

Draft
   │
   ▼
Technical Review
   │
   ▼
Approved
   │
   ▼
Released
   │
   ▼
Maintained
   │
   ▼
Superseded

Every lifecycle transition shall be recorded.

25.7 Identification¶

Each Engineering Specification shall possess:

Specification Identifier
Title
Version
Status
Owner
Approval Authority
Effective Date

Identifiers shall remain unique throughout the Engineering Intelligence Platform.

25.8 Version Management¶

Engineering Specifications shall follow controlled versioning.

Typical version progression includes:

Draft
Review
Release
Maintenance

Major revisions shall indicate substantial engineering changes.

Minor revisions shall indicate engineering refinements.

Editorial revisions shall not alter engineering intent.

25.9 Traceability¶

Every Engineering Specification shall maintain traceability to:

Engineering Constitution
Governance Baseline
Architecture Decisions
Verification Assets
Configuration Records
Release Baselines

Bidirectional traceability shall be maintained whenever practicable.

25.10 Constitutional Compliance¶

Engineering Specifications shall comply with:

Engineering Constitution Rev.1
Governance Baseline
Architecture Board Decisions
Applicable Engineering Baselines

Engineering Specifications shall not redefine governance responsibilities, governance relationships, governance boundaries, or constitutional lifecycle definitions.

Such changes require Architecture Change Control.

25.11 Chapter Summary¶

This chapter establishes Engineering Specification Governance as the primary engineering realization mechanism of the Engineering Intelligence Platform.

It confirms that:

SP-000 serves as the authoritative Engineering Specification index;
all Engineering Specifications operate under controlled Engineering Baselines;
Engineering Specifications remain subordinate to constitutional governance;
controlled lifecycle, configuration management, and traceability are mandatory;
constitutional governance remains stable while engineering specifications evolve continuously.