Building BIOS Architecture

Configuration Change Management controls every modification affecting the approved building configuration.

A change may involve:

adding or removing a component;

replacing a Cartridge;

changing an Interface connection;

relocating equipment;

changing capacity;

changing an Engineering Profile;

modifying dependencies;

updating firmware or software;

changing control authority;

altering safety behavior;

introducing a Legacy Adapter;

enabling a new capability.

Changes shall be classified as:

administrative;

minor operational;

maintenance;

functional;

capacity-affecting;

Interface-affecting;

structural;

safety-affecting;

security-affecting;

emergency;

experimental.

Each change request shall include:

Change ID;

purpose;

initiating authority;

affected entities;

proposed configuration;

engineering rationale;

compatibility analysis;

dependency impact;

safety and security impact;

evidence;

implementation procedure;

verification plan;

rollback or recovery plan;

required approvals;

planned schedule.

The change process shall include:

submission;

completeness review;

authority verification;

technical validation;

impact analysis;

approval or rejection;

implementation;

physical verification;

commissioning;

baseline update;

closure.

Emergency changes may use an accelerated process but shall still preserve identity, authority, event records, temporary restrictions, and post-event review.

Unapproved field modifications shall be recorded as configuration drift rather than incorporated silently into the approved baseline.