Reliability Support
RBI planning, Fitness-for-Service assessments, Root Cause Failure Analysis, and maintenance strategy development to maximize equipment uptime and regulatory compliance.
In process industries, equipment reliability is directly linked to safety, environmental compliance, production output, and financial performance. When equipment fails unexpectedly — whether a heat exchanger tube bundle collapses, a pressure vessel develops a leak, or a relief valve fails to open on demand — the consequences ripple through the entire facility. Unplanned shutdowns, emergency repairs, regulatory investigations, and incident response are enormously more costly than the systematic, proactive reliability programs that prevent them.
Precision MCS (PMCS) provides reliability support services that integrate inspection expertise, engineering analysis, and risk management methodology to help your facility move from reactive maintenance toward a predictive, risk-informed operational model. Our reliability engineers and inspection specialists work alongside your team to identify the most critical vulnerabilities in your equipment systems, develop practical strategies to address them, and build the data infrastructure needed to sustain long-term reliability improvement.
Risk-Based Inspection (RBI) is the most effective framework available for optimizing inspection resource allocation in process facilities. Rather than inspecting all equipment on fixed schedules regardless of its actual risk level, RBI directs inspection activity based on a systematic assessment of the likelihood of equipment failure and the consequence of that failure. High-risk, high-consequence equipment receives more frequent and more intensive inspection; low-risk equipment is inspected less frequently, freeing inspection resources for where they are needed most.
PMCS supports RBI program development and implementation in accordance with API 580 (Risk-Based Inspection) and API 581 (Risk-Based Inspection Methodology). Our RBI services include equipment screening and criticality classification, damage mechanism identification and assessment, probability of failure (PoF) analysis based on corrosion rates and inspection history, consequence of failure (CoF) analysis based on fluid hazards, release scenarios, and populated areas, risk ranking and visualization, inspection plan development with optimized intervals and scope, and ongoing plan management as inspection results are incorporated and risk levels are updated.
When inspection reveals a flaw, degradation, or damage in a piece of pressure equipment — a corrosion pit, a weld crack, a dented section of shell — the engineering question is whether the equipment is safe to continue operating as-is, whether it can operate with modified conditions, or whether it must be repaired or replaced before returning to service. Fitness-for-Service (FFS) assessment provides the quantitative engineering answer to this question.
PMCS performs FFS assessments in accordance with API 579-1/ASME FFS-1 (Fitness-for-Service), the internationally recognized standard for FFS evaluation of pressure vessels, piping, and storage tanks. Our assessments address all common damage categories including metal loss from corrosion and erosion, pitting damage, hydrogen blistering and HIC, weld misalignment and shell distortion, fire damage and high-temperature exposure, and brittle fracture risk at low operating temperatures. The output of a PMCS FFS assessment is a clear engineering determination — with documented supporting calculations — of whether the equipment is fit for continued service and under what conditions.
When equipment fails, the immediate priority is restoration of safe operation. But the longer-term priority — one that most facilities underinvest in — is understanding why the failure occurred and preventing recurrence. PMCS provides failure analysis and Root Cause Failure Analysis (RCFA) services that investigate equipment failures systematically and thoroughly.
Our RCFA process begins with a structured evidence collection phase — documenting the failure, preserving physical evidence, collecting operational and maintenance history, and gathering inspection records. Analysis applies established methodologies including fault tree analysis, cause-and-effect diagrams, and change analysis to identify the physical root cause (the material, design, or process condition that caused the failure), the human root cause (the decision, action, or omission that allowed the physical cause to develop), and the latent root cause (the systemic organizational or procedural factor that enabled the human cause). Recommendations are specific, actionable, and prioritized, addressing equipment, procedures, training, and management systems as needed to prevent recurrence.
PMCS assists facilities in developing equipment-specific maintenance strategies that align maintenance activities with actual equipment risk, failure modes, and cost drivers. Using Reliability Centered Maintenance (RCM) methodology where appropriate, we identify the optimal combination of time-based maintenance, condition-based maintenance, and run-to-failure strategies for each equipment type, calibrated to the consequences of failure in your specific process environment. The result is a maintenance program that is both cost-effective and defensibly safe — one that your facility can explain and justify to regulators, insurers, and corporate stakeholders.
Reliability improvement requires data — and more specifically, it requires data that is accessible, accurate, and consistently formatted across the equipment inventory. PMCS supports the development of inspection data management systems that capture thickness measurements, inspection findings, corrosion rates, remaining life projections, and maintenance history in a structured format that enables fleet-wide trending and analysis. Whether your facility uses commercial inspection data management software or a structured internal system, PMCS can help you build the data architecture needed to support RBI, FFS, and long-term reliability management.
Reliability support services are most powerful when fully integrated with a facility's Mechanical Integrity program. PMCS works with your MI program leader and process safety team to ensure that RBI plans, FFS assessments, failure analyses, and maintenance strategies are coordinated with your inspection schedules, PSM documentation requirements, and MOC processes. This integration ensures that reliability improvements are captured in your safety management system and that the full benefit of reliability investments is realized in both equipment performance and regulatory compliance.
PMCS provides reliability support services to process facilities of all sizes — from small, single-unit operations to large, multi-unit refineries and chemical complexes. Our clients include plant engineers and reliability managers who need expert support developing or improving their reliability programs, inspection managers who need RBI plans and FFS assessments to justify inspection intervals and resolve engineering findings, and operations leaders who need to understand and reduce their facility's unplanned downtime and maintenance costs. PMCS brings engineering rigor, field-proven experience, and a genuine commitment to client outcomes to every reliability engagement.
API 570-compliant piping inspection services covering thickness measurement, corrosion assessment, CUI evaluation, and fitness-for-service determinations for process piping systems of all types.
Certified inspections of all flame arrestor types — deflagration, detonation, in-line, and end-of-line — documented to API 2000, NFPA 67, and EN ISO 16852 standards.
