Nuclear & Decommissioning · Asset Performance Management

Where asset management
is a matter of
consequence.

Nuclear operations demand a standard of asset management rigour found nowhere else. Optimal provides materials management, maintenance strategy, asset register build and ISO 55001 advisory for nuclear power generation, fuel cycle, waste management and decommissioning programmes — where the cost of failure is measured in more than production.

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Major Decommissioning Programme · UK

£14M

Materials and inventory value identified for rationalisation in year one — freeing working capital while improving materials availability for active decommissioning work.

Warehouse & Storage Optimisation

20%

Warehouse space freed through structured stock rationalisation — obsolete, slow-moving and mis-catalogued inventory identified and actioned.

Regulatory Alignment

ONR / NIA

All programmes delivered with full alignment to ONR safety case requirements, NIA good practice guidance and ISO 55001 asset management principles.

Nuclear Power Generation

Decommissioning Programmes

Fuel Cycle Facilities

Waste Management

ONR · NIA · ISO 55001 · RCM

UK · Europe

The Operating Reality

Nuclear demands more
from asset management

In nuclear, the consequences of asset management failure extend far beyond production loss. Every decision — from materials cataloguing to maintenance task design — carries safety case implications that must be documented, justified and defensible to the regulator. Yet many facilities face the same structural challenges that afflict other asset-intensive industries: poor data, reactive maintenance practices, and knowledge walking out the door.

The difference in nuclear is that these challenges carry heightened consequence — and require heightened rigour in the response. Optimal provides that rigour, applied with full understanding of the regulatory context.

How ARaaS® solves this

Materials and inventory without visibilityLarge, complex materials estates accumulated over decades of operation. Poor cataloguing, duplicate records and no single source of truth — creating both financial waste and operational risk when items cannot be located at the point of need.

Maintenance not aligned to the safety casePM task sets disconnected from the current safety case. Maintenance intervals set historically, not justified by failure mode analysis — creating potential gaps between operational practice and the regulatory basis for continued operation.

Asset data fragmented across legacy systemsCritical asset information distributed across multiple databases, paper records and individual knowledge holders — with no consolidated, auditable asset register that can serve both operational and regulatory purposes.

Knowledge retention in an ageing workforceExperienced engineers and technicians retiring at pace. Decades of operational and maintenance knowledge undocumented — with no structured programme to capture, codify and transfer it to the next generation of operators.

Cost control across multi-decade programmesDecommissioning programmes spanning 20–40 years. Asset and materials decisions made today carry lifetime cost implications — requiring structured lifecycle analysis, capital planning and asset management governance that operates at programme timescales.

Nuclear facility asset management and engineering

The Optimal Approach

Regulatory rigour.
Practical delivery.

Optimal understands that nuclear asset management sits at the intersection of operational necessity and regulatory obligation. Our programmes are designed to satisfy both — delivering structured, defensible asset management that improves day-to-day operational reliability while producing the documented evidence that supports your safety case.

We work alongside your in-house engineering and operations teams — not in isolation from them. Every deliverable is built to be owned, maintained and built upon by your people after the engagement concludes.

Structured materials management strategy and cataloguing →

RCM-based maintenance strategy aligned to safety case →

Consolidated, auditable asset register build →

ISO 55001 gap assessment and SAMP development →

Spares optimisation and lifecycle cost analysis →

Workforce capability and knowledge transfer programmes →

Explore the ARaaS® framework

Decommissioning & Life Extension

Managing assets across
programme timescales.

Decommissioning programmes are unlike any other asset management challenge. The objective shifts from maximising availability to safely managing asset end-of-life — across decades, through changing workforce generations, with cost certainty as a regulatory and commercial obligation. Optimal's experience in nuclear decommissioning spans materials management strategy, asset data consolidation and lifecycle cost modelling — all oriented to the long programme view.

Materials estate rationalisation and value-from-disposal programmes

Lifecycle cost modelling — maintenance cost vs decommissioning sequence trade-offs

Asset condition assessment and remaining useful life estimation

Legacy data consolidation — paper records, legacy CMMS, engineering databases

Knowledge capture and documentation before workforce attrition

Governance frameworks for multi-decade programme management

Discuss Your Programme ARaaS® Framework →

Services for Nuclear & Decommissioning

Every service a nuclear operator
needs — delivered with rigour

Optimal's full nuclear capability — from materials management strategy and asset register build through to maintenance strategy, knowledge transfer and ISO 55001 advisory.

Materials Management Strategy

Materials estate audit and condition assessment

Cataloguing standards and master data governance

Duplicate and obsolete item identification

Value-from-disposal programme management

Procurement policy and min/max level setting

Maintenance Strategy & RCM

FMECA aligned to safety case classification

RCM-based task development and schedule optimisation

Safety-case maintenance task justification

PM rationalisation and interval optimisation

SAP PM / Maximo task library integration

Asset Register Build & CMMS

Consolidated asset register from legacy sources

ISO 14224-compliant functional location hierarchy

Equipment tagging, BoMs and criticality classification

Work order quality and data governance framework

Cross-system data migration and validation

ISO 55001 Gap Assessment

Clause-by-clause gap assessment and maturity scoring

Asset Management Policy and SAMP development

Governance framework aligned to ONR expectations

Implementation roadmap and certification pathway

Board-level KPI and performance reporting framework

Spares Optimisation

Critical and insurance spares identification

Long-lead item and obsolescence strategy

Lifecycle cost modelling for replacement decisions

Rationalisation and disposal programme

Shared-fleet and strategic sparing analysis

Workforce Capability & Knowledge Capture

Structured knowledge elicitation and documentation

Optimal Academy training — maintenance and reliability

Competency framework development

Procedure and work instruction authoring

Succession planning and capability gap analysis

Trusted by Nuclear Operators

Optimal has delivered asset performance programmes for nuclear power generation and decommissioning operators in the UK — addressing materials management, maintenance strategy and asset data challenges across operational and end-of-life facility contexts.

Major Nuclear Decommissioning Facility · UK

Nuclear Power Generation Operator · UK

Detailed case studies below are anonymised in line with Optimal's client confidentiality policy. Client consent is required before specific project details are attributed publicly. Contact us to arrange reference calls with relevant operators.

Case Studies — Nuclear & Decommissioning

Proven delivery across
the nuclear asset lifecycle

All case studies

Nuclear · Decommissioning · UK

Major Nuclear Decommissioning Facility — UK

Materials Management Strategy & Rationalisation

Large nuclear decommissioning facility with a materials and inventory estate accumulated over decades of operation. No structured materials management strategy, widespread cataloguing inconsistencies, significant duplicate records and no reliable visibility of what was held, where, or whether items remained serviceable — creating both financial waste and operational delay when materials could not be located.

Results delivered

£14M

Materials and inventory value identified for rationalisation in year one — obsolete, duplicate and non-serviceable items assessed and value-from-disposal programme initiated

20%

Warehouse space freed through structured stock rationalisation — improving materials flow for active decommissioning work and reducing ongoing storage and handling cost

Nuclear · Power Generation · UK

Nuclear Power Generation Operator — UK

RCM Maintenance Strategy Development

Nuclear power generation operator with PM task sets inherited from original commissioning — intervals set historically, not justified by current failure mode analysis. Maintenance schedules were generating excessive cost and resource demand without clear safety case justification. The operator required a structured, defensible maintenance strategy that aligned task frequency and scope to actual equipment criticality and failure behaviour.

Results delivered

RCM

Full FMECA and RCM task development completed. Maintenance tasks redesigned around failure modes — safety-case alignment documented for all modified and new tasks

Rationalised

PM schedule rationalised — redundant tasks removed, intervals justified, resource demand reduced. Full task library delivered in CMMS-ready format with criticality classifications

Nuclear · Decommissioning · Asset Data

Nuclear Decommissioning Programme — UK

Asset Register Build & Data Consolidation

Complex decommissioning programme with critical asset information distributed across multiple legacy CMMS instances, paper-based engineering records and individual knowledge holders. No consolidated, auditable asset register existed — making it impossible to demonstrate structured asset management to the regulator or to plan decommissioning sequences with confidence.

Results delivered

Consolidated

Single-source asset register built — all legacy data sources reconciled, validated and structured to ISO 14224 functional location hierarchy with full audit trail

Auditable

Asset criticality classification, condition records and maintenance history captured per equipment item — providing the evidential base for decommissioning sequence planning and regulatory reporting

Nuclear · Spares · Lifecycle Cost

Nuclear Facility Operator — UK

Spares Optimisation & Lifecycle Cost Analysis

Nuclear facility with a spares estate that had grown without governance — large quantities of long-superseded parts held at cost, while genuine critical items had no structured identification or stocking policy. Long-lead items for safety-classified equipment were managed reactively, creating schedule risk when failures occurred during active operations.

Results delivered

Structured

Critical, insurance and operational spares identified and classified by safety case significance and lead time. Procurement triggers and min/max levels set per item class

Rationalised

Obsolete and superseded stock identified for disposal. Lifecycle cost model built for high-value capital spares — informing replace-vs-repair decisions on a defensible, documented basis

Nuclear · Workforce · Knowledge Retention

Nuclear Decommissioning Programme — UK

Reliability Training & Knowledge Capture Programme

Decommissioning programme facing significant workforce attrition — experienced maintenance engineers and technicians retiring over a five-year window, with operational and maintenance knowledge largely undocumented. The programme required a structured approach to knowledge elicitation, documentation and transfer before critical expertise was permanently lost.

Results delivered

Captured

Structured knowledge elicitation programme completed — operational procedures, maintenance work instructions and failure history documented in transferable, auditable format

Transferred

Optimal Academy training programme delivered to incoming engineer cohort — maintenance and reliability foundations combined with site-specific asset context and procedure familiarisation

Digital & Data Engineering

Turning legacy data into
operational clarity

Nuclear facilities accumulate decades of asset data — across CMMS systems, paper records, engineering drawings and individual knowledge holders. Optimal's data engineering capability consolidates this information into structured, auditable asset registers and materials catalogues that serve both day-to-day operations and regulatory reporting.

For live nuclear operations, Optimal deploys condition monitoring and predictive analytics to shift maintenance from time-based schedules to condition-driven interventions — reducing unnecessary intrusion on safety-classified plant while maintaining full regulatory traceability.

Legacy data consolidation and structured migration →

Condition monitoring programme design and deployment →

Optimal360™ APM platform integration →

CMMS data cleansing, enrichment and governance →

Regulatory-ready reporting and audit trails →

Predictive maintenance services

Digital engineering and data analytics for nuclear asset management

Where asset management
is a matter of
consequence.

Nuclear demands more
from asset management

Regulatory rigour.
Practical delivery.

Managing assets across
programme timescales.

Every service a nuclear operator
needs — delivered with rigour

Proven delivery across
the nuclear asset lifecycle

Turning legacy data into
operational clarity

How does your nuclear programme
compare with global peers?

Ready to bring structure
to your nuclear programme?

Optimal across
asset-intensive sectors

Where asset managementis a matter ofconsequence.

Nuclear demands morefrom asset management

Regulatory rigour.Practical delivery.

Managing assets acrossprogramme timescales.

Every service a nuclear operatorneeds — delivered with rigour

Proven delivery acrossthe nuclear asset lifecycle

Turning legacy data intooperational clarity

How does your nuclear programmecompare with global peers?

Ready to bring structureto your nuclear programme?

Optimal acrossasset-intensive sectors

Where asset management
is a matter of
consequence.

Nuclear demands more
from asset management

Regulatory rigour.
Practical delivery.

Managing assets across
programme timescales.

Every service a nuclear operator
needs — delivered with rigour

Proven delivery across
the nuclear asset lifecycle

Turning legacy data into
operational clarity

How does your nuclear programme
compare with global peers?

Ready to bring structure
to your nuclear programme?

Optimal across
asset-intensive sectors