Nuclear
Nuclear safety principles • safety culture • LTQR • Golden Thread • traceability • controlled evidence
Matthew Dixon // The Knowledge Case
My Knowledge & Skills
PERSONAL BODY OF KNOWLEDGE
A visual map of the engineering knowledge, practical methods and leadership capability I have built across aerospace, defence, nuclear and advanced manufacturing.
This page maps my:Technical knowledgePractical engineering methodsAssurance judgementLeadership capability
10technical knowledge systems
100+mapped technical knowledge points
6director-level leadership systems
36+leadership behaviours & levers
This is my working knowledge, broken apart so you can see what sits behind my CV and programme experience.
It spans safety-critical engineering, aircraft electrical systems and airworthiness, nuclear assurance, manufacturing, supplier development, welding, electrical compliance, statistical process control, lean improvement, DFMA and evidence-based conformity.
The leadership view shows how I use that technical foundation to set direction, control risk, build capability, improve performance and influence decisions at organisational level.
FIG.001 // COMPACT DISK ASSEMBLY[ PERSONAL KNOWLEDGE MAP / TAC-KC-01 ]
MY TECHNICAL KNOWLEDGEvertical exploded view
FIG.002 // TECHNICAL KNOWLEDGE ARCHITECTURE
Open the layers
Ten connected knowledge systems. Open any layer to see the detail beneath the headline — the methods, controls and working concepts that form my technical base.
NUC.01Nuclear safety & assurance
Working knowledge of the controls, behaviours and evidence expectations used to protect nuclear safety and demonstrate confidence in safety-significant work.
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Nuclear safety & assurance
Working knowledge of the controls, behaviours and evidence expectations used to protect nuclear safety and demonstrate confidence in safety-significant work.
Nuclear safetyNuclear safety cultureGolden ThreadLifetime Quality Records (LTQR)TraceabilityConfiguration controlHold pointsWitness pointsIndependent assuranceNon-conformance control
HOW I APPLY IT
Applied through engineering assurance, supplier oversight, manufacturing evidence and challenge of whether claims are supported by objective records.
SYS.02Systems engineering & lifecycle
A lifecycle view of how requirements become a verified, validated and controlled physical solution.
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Systems engineering & lifecycle
A lifecycle view of how requirements become a verified, validated and controlled physical solution.
Engineering V-cycleOperational needStakeholder requirementsSystem requirementsArchitectureDetailed designInterfacesVerificationValidationConfiguration baseline
HOW I APPLY IT
Used to connect requirements, design intent, manufacture, integration, test, acceptance and the final evidence set.
AIR.03Aircraft electrical & airworthiness
Practical engineering foundations developed through aircraft electrical engineering and delegated release responsibility.
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Aircraft electrical & airworthiness
Practical engineering foundations developed through aircraft electrical engineering and delegated release responsibility.
Aircraft electrical systemsElectrical installationWiringConnectors & terminationsInspectionFunctional testingFault findingModification embodimentAirworthinessDelegated release authority
HOW I APPLY IT
Built engineering judgement around safety-critical workmanship, conformity, technical records and accountable release decisions.
ELC.04Electrical product compliance
Working knowledge of conformity and environmental protection requirements for electrical equipment and assemblies.
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Electrical product compliance
Working knowledge of conformity and environmental protection requirements for electrical equipment and assemblies.
UKCAEMCEMI awarenessIP ratingsIK ratingsElectrical cabinet assuranceInstallation conformityInspection evidenceTest evidenceTechnical compliance records
HOW I APPLY IT
Used when assuring electrical cabinets, installation requirements, compliance evidence and the route from design requirement to accepted product.
WLD.05Welding & fabrication
Practical assurance of fabrication as a controlled special process rather than simply inspecting the finished weld.
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Welding & fabrication
Practical assurance of fabrication as a controlled special process rather than simply inspecting the finished weld.
Fillet weldsButt weldsWPSWPQR / procedure qualificationWelder qualificationJoint preparationVisual weld inspectionAcceptance criteriaRepair / rework controlWeld traceability
HOW I APPLY IT
Used in supplier development, including qualification of welding procedures and personnel and strengthening fabrication evidence to nuclear manufacturing expectations.
MFG.06Manufacturing & supplier capability
Understanding whether a supplier can repeatedly manufacture conforming product under controlled and auditable conditions.
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Manufacturing & supplier capability
Understanding whether a supplier can repeatedly manufacture conforming product under controlled and auditable conditions.
Supplier capability assessmentManufacturing readinessProcess controlInspection planningMaterial traceabilityStandardised workJigs & fixturesError-proofingAutomation opportunitiesOperator competence
HOW I APPLY IT
Applied while working closely with manufacturing suppliers to improve capability and raise operating standards for nuclear supply.
SPC.07Statistical process control
Quantitative analysis of whether a process is stable, capable and predictable rather than relying on final inspection alone.
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Statistical process control
Quantitative analysis of whether a process is stable, capable and predictable rather than relying on final inspection alone.
Dimensional data analysisSpecified tolerancesCpCpkX-bar chartsR chartsProcess stabilitySpecial-cause variationMeasurement errorMachine / tooling effects
HOW I APPLY IT
Applied to a precision lathe-machined power-transmission component, including assessment of stoppages, tool-clamp adjustment and measurement integrity.
LBI.08Lean & business improvement
Analysis of flow, waste, constraints and process design to improve delivery without losing control of quality.
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Lean & business improvement
Analysis of flow, waste, constraints and process design to improve delivery without losing control of quality.
Current-state VSMFuture-state VSMCycle timeLead timeBottleneck analysisRoot-cause analysisTPMStandardisationDigital recordsContinuous improvement
HOW I APPLY IT
Applied to electrical-cabinet fabrication, identifying a potential lead-time reduction from 28 to 19 days alongside process and evidence improvements.
DFM.09Design for manufacture & assembly
Working upstream so manufacturability, assembly efficiency and engineering risk are addressed before they become production problems.
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Design for manufacture & assembly
Working upstream so manufacturability, assembly efficiency and engineering risk are addressed before they become production problems.
Product design specificationFunctional analysisComponent analysisFeeding analysisFitting analysisAssembly sequenceComponent interfacesTooling requirementsDesign efficiencyEngineering risk evaluation
HOW I APPLY IT
Developed through MSc engineering work linking product design decisions to assembly effort, tooling, interfaces, redesign and risk.
EVD.10Evidence, records & conformity
The discipline of proving that the physical product matches the intended configuration and that the evidence tells the same story.
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Evidence, records & conformity
The discipline of proving that the physical product matches the intended configuration and that the evidence tells the same story.
As-designedAs-builtAs-evidencedInspection recordsTest recordsCertificatesITPsNCR closureConcessions / deviationsConfiguration records
HOW I APPLY IT
This is the core assurance question I use across sectors: does what was built demonstrably conform to what was intended, and can that conclusion be defended from records?
FIG.003 // STANDARDS, CONTROLS & FRAMEWORKS
Not a standards list — a working map
I use standards and compliance frameworks as engineering controls. The important question is where they enter the lifecycle, what risk they control and what evidence demonstrates conformity.
Welding
ISO welding standards in use • fillet and butt weld controls • procedure qualification • welder qualification • inspection and acceptance
Electrical
UKCA • EMC • IP protection • IK impact protection • electrical inspection and test evidence
Quality systems
ISO-aligned management systems • controlled processes • auditability • records • corrective action • continual improvement
Airworthiness
Configuration • conformity • technical records • inspection / test • delegated release responsibility
Manufacturing
SPC • process capability • VSM • TPM • standard work • preventive maintenance • error-proofing
FIG.004 // HOW I THINK ABOUT THE ENGINEERING LIFECYCLE
As-designed → As-built → As-evidenced
A core part of my assurance thinking: define what should exist, understand what was actually built, and establish whether the evidence proves alignment between the two.
01Need
02Requirements
03Architecture + design
04Build + integrate
05Verify
06Validate + accept
As-designed
Requirements, drawings, schematics, standards, interfaces, tolerances, design intent and configuration baseline.
As-built
Materials, components, fabrication, wiring, modifications, inspections, test results and actual configuration.
As-evidenced
Certificates, inspection records, weld maps, WPS / WPQR, qualifications, LTQR, approvals and traceability.
FIG.005 // DIRECTOR-LEVEL LEADERSHIP SYSTEM
What changes because I lead
Technical depth creates credibility. Director-level value comes from turning that credibility into direction, capability, governance, performance and better organisational decisions.
DIR-01
Set direction
Turn organisational objectives into a clear assurance and engineering agenda.
Strategic prioritiesAssurance strategyOperating modelQuality objectivesRisk appetiteGovernance expectations
LEADERSHIP OUTCOME
Creates clarity about what matters, where assurance effort is focused and how success is measured.
DIR-02
Build capability
Improve the competence and maturity of people, suppliers and systems rather than becoming the person who has to solve every problem.
CoachingCompetenceSupplier developmentStandard workKnowledge transferSuccession thinking
LEADERSHIP OUTCOME
Builds repeatable organisational capability rather than dependence on individual experts.
DIR-03
Control risk
Make technical, delivery and quality risk visible early enough for leaders to act.
Independent challengeEscalationRisk-based assuranceManagement reviewDecision recordsExecutive visibility
LEADERSHIP OUTCOME
Improves the quality and timing of decisions on safety, compliance, delivery and supplier performance.
DIR-04
Improve performance
Connect engineering quality to operational and business outcomes.
Right-first-timeLead-time reductionProcess capabilitySupplier recoveryKPI architectureRecurring-defect reduction
LEADERSHIP OUTCOME
Turns assurance from overhead into a mechanism for delivery confidence and performance improvement.
DIR-05
Lead change
Move teams from reactive inspection and firefighting toward controlled, preventive and evidence-led systems.
TransformationStandardisationDigital evidenceAutomationProcess redesignContinuous improvement
LEADERSHIP OUTCOME
Creates more resilient systems that prevent problems, capture evidence at source and reduce avoidable rework.
DIR-06
Influence decisions
Use technical credibility to align stakeholders who do not necessarily report through the same line structure.
EngineeringManufacturingSuppliersDesign authorityCustomersSenior leadership
LEADERSHIP OUTCOME
Enables cross-functional decisions where authority is distributed but accountability still has to be clear.
FIG.006 // A PRINCIPLE I APPLY
The Golden Thread
I look for a traceable connection from requirement through design, procurement, manufacture and verification to the final asset and its lifetime records. The evidence should tell the same story as the engineering.
RequireDesignProcureManufactureInspectTestInstallCommissionOperateLTQR
My assurance judgement is built on maintaining alignment between design intent, physical configuration and objective evidence.