What records are essential to maintain when decommissioning an OT asset?

What records are essential to maintain when decommissioning an OT asset?

• A. Maintenance logs associated with the asset.
• B. Proof of disposal, updated asset inventories, and change logs.
• C. Purchase orders and vendor invoices.
• D. No records are required.

Answer: (B)

When decommissioning an OT asset, the essential records ensure an auditable and secure handoff from active use to retirement. Proof of disposal shows that the asset has been properly removed from service and safely handled—whether it’s securely wiped or physically destroyed—so there’s documentation that data sanitization and environmental disposal requirements were met. An updated asset inventory is crucial to reflect that the asset is no longer in the deployed environment, preventing phantom devices, misallocation, or accidental re-use. A change log captures the decommissioning process itself—who authorized it, what steps were taken, when it happened, and any safeguards or risk mitigations implemented—creating a clear audit trail for accountability and regulatory compliance. Maintenance logs provide historical maintenance context but don’t establish the actual decommissioning actions or the disposition of the asset. Purchase orders and vendor invoices pertain to procurement and lifecycle costs rather than the decommission event. Saying no records are required ignores the need for traceable, verifiable records to prove proper disposal and accurate asset tracking.

When decommissioning an OT asset, the essential records ensure an auditable and secure handoff from active use to retirement. Proof of disposal shows that the asset has been properly removed from service and safely handled—whether it’s securely wiped or physically destroyed—so there’s documentation that data sanitization and environmental disposal requirements were met. An updated asset inventory is crucial to reflect that the asset is no longer in the deployed environment, preventing phantom devices, misallocation, or accidental re-use. A change log captures the decommissioning process itself—who authorized it, what steps were taken, when it happened, and any safeguards or risk mitigations implemented—creating a clear audit trail for accountability and regulatory compliance.

Maintenance logs provide historical maintenance context but don’t establish the actual decommissioning actions or the disposition of the asset. Purchase orders and vendor invoices pertain to procurement and lifecycle costs rather than the decommission event. Saying no records are required ignores the need for traceable, verifiable records to prove proper disposal and accurate asset tracking.