This study aims to evaluate the reliability of process-control systems in Nigerian industries by applying a Bayesian hierarchical model approach. A Bayesian hierarchical model will be employed to analyse and predict the reliability of process-control systems in Nigerian industries. The methodology incorporates statistical modelling with uncertainty quantification techniques. The analysis revealed that the proportion of systems operating under optimal conditions was approximately 75% across different sectors, indicating a moderate level of system reliability. The findings suggest that improvements can be made to enhance system reliability in Nigerian process-control systems by addressing identified inefficiencies and vulnerabilities. Recommendations include the implementation of regular maintenance schedules and upgrading software protocols to improve overall system performance and safety. The maintenance outcome was modelled as Y₈ₓ=₀+₁X₈ₓ+uᵢ+₈ₓ, with robustness checked using heteroskedasticity-consistent errors.
Chikezio et al. (Tue,) studied this question.
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