Applying manufacturing risk, reliability and controlled-change thinking to reliable, secure and supportable Operational Technology services.
My background in manufacturing engineering provides practical experience of multidisciplinary risk reviews, process failure investigations, technical requirements, and controlled introduction of change. This page explores how those disciplines can inform OT service-management decisions, alongside developing competence in networking and cybersecurity.
Transferable methods
Structured analysis of potential failure modes, their consequences, existing controls and mitigation priorities. In OT service planning, a similar risk-based approach can help anticipate effects of network, device or service failure on operations.
Service connection: proactive risk management and resilience planning.
Failure reporting, analysis and corrective action link observed failures to evidence, root cause, action ownership and effectiveness verification. These practices can inform OT incident investigation and recurring-problem reduction.
Service connection: incident evidence, problem investigation and continual improvement.
Requirements, impact assessment, approvals, verification and traceable documentation support a controlled route from technical proposal to operational use. For OT services, change acceptance also requires support, recovery and operational dependencies to be understood.
Service connection: change enablement, service transition and acceptance.
Structured technical reviews, decision records, action owners and escalation help align engineering, operations, suppliers and specialist support teams when priorities or constraints differ.
Service connection: coordination, service communication and traceability.
Illustrative case study
Consider a hypothetical industrial cell with an operator workstation, control devices and supporting network equipment. Intermittent communication interruptions affect visibility of the process. Before any technical intervention, operational safety and the impact on equipment must be assessed with the responsible specialists.
Use failure-mode thinking to identify consequences, dependencies, existing controls and priority.
Capture symptoms and evidence, coordinate specialists, distinguish safe restoration from root-cause resolution.
Review impact, authorisation, maintenance window, rollback and verification before modifying devices.
Confirm restoration and effectiveness, record decisions, assign follow-ups and update support knowledge.
Scope: This is a constructed educational scenario, not an account of an employer's operational event, infrastructure or procedures.
Professional perspective
PFMEA supports anticipation of operational failure; FRACAS provides a disciplined evidence-to-corrective-action cycle; controlled engineering change supports safe implementation. These approaches share principles with IT service risk, problem management, continual improvement and change enablement, but they are not identical formal processes.
OT changes must account for people, process integrity, equipment compatibility, availability and recovery. IEC 62443 concepts such as zones, conduits and defence in depth provide a complementary security perspective. PFMEA alone does not replace cybersecurity threat modelling or a dedicated security risk assessment.
I am expanding these established engineering disciplines through independent OT networking laboratories, network segmentation studies, packet analysis and Python-based documentation and audit tools. Laboratory projects are learning evidence, not claims of deployment in an operational facility.