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Operational Excellence

Process Capability Improvement

Cp / Cpk uplift from baseline through DOE driven variation reduction and design improvement

Programme overview

Process Capability
Improvement

Process capability decides whether your process reliably makes product inside specification or quietly bleeds yield, rework and customer complaints. Lifting it is one of the most direct routes to lower quality cost and steadier output, which is why it sits at the heart of every serious operational excellence programme. Our team uses statistical capability analysis through Cp, Cpk, Pp and Ppk to baseline real performance against specification, then applies Design of Experiments to find and remove the dominant sources of variation. Where capability cannot be lifted by process improvement alone we negotiate the specification or deploy targeted automation. We apply this across chemical, pharmaceutical, manufacturing and assembly operations wherever consistent quality and tight tolerances matter.

Process Capability Improvement Overview
How we deliver it

Our implementation model

A practical, phased delivery approach that runs from gap assessment through operational embedding and is built around your regulatory context.

Specification Definition

Define product specifications based on customer requirements, regulatory limits, and process physics, document USL / LSL.

Process Baseline

Measure baseline process performance, mean, standard deviation, distribution shape, autocorrelation, special cause patterns.

Capability Assessment

Calculate Cp, Cpk, Pp, Ppk, benchmark against industry standards (>1.33 capable, >1.67 highly capable, >2.0 Six Sigma).

Improvement Strategy

Design improvement strategy, variation reduction (Six Sigma), spec adjustment (with customer agreement), automation, control improvement.

Pilot & Implementation

Pilot improvements via DOE / pilot run, validate via statistical hypothesis testing, scale to full production.

Sustainment Monitoring

Ongoing SPC monitoring, periodic capability re assessment, integration with management review and customer audits.

What the programme covers

Process Capability in full scope

Specification definition and validation
Process baseline measurement
Capability assessment (Cp / Cpk / Pp / Ppk)
Improvement strategy design
Pilot validation via DOE
Sustainment monitoring
Process Capability Improvement Coverage
Business value

Value of Process Capability Improvement

Stability via Capability
  • Variation reduction reducing incidents
  • Stable process reducing operator intervention
  • Standard work supporting capability
  • Early warning through SPC integration
Capability Governance
  • AIAG / ISO 22514 audit defence
  • Customer (automotive / aerospace) PPAP
  • ISO 9001 Cl.8.5.6 evidence
  • Statistical specification defence
Capability Performance
  • Cpk uplift (typical 0.5 to 1.0 improvement)
  • Defect reduction
  • Reduced customer rejection
  • Reduced inspection burden
Capability ROI
  • Customer loss prevention
  • Avoided cost of poor quality
  • Reduced inspection
  • Reduced rework / scrap
Standards & references

Codes & standards we work to

AIAG SPC Reference ManualISO 22514 Statistical Methods in Process ManagementMontgomery DOE MethodologySix Sigma DMAICASQ Six Sigma Body of KnowledgeMinitab Statistical Software
When to engage

Triggers that signal the need

Customer PPAP capability requirementISO 9001 audit findingSix Sigma project requirementDefect / rejection upliftNew product launch capability
Industries served

Where Process Capability Improvement applies

Oil & Gas, Upstream

Wellheads, separators, gas compression, FPSO topsides, produced water systems.

UpstreamOffshoreFPSO
Refineries & Petrochemicals

Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.

RefiningPetrochemical
LNG & Gas Processing

Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.

LNGCryogenic
Specialty Chemicals

Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.

ReactiveBatch
Power Generation

Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.

PowerHydrogen
Pharma & Food

Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.

PharmaFood & Bev
What we deliver

Tangible deliverables

  • Specification register
  • Capability baseline reports
  • Improvement strategy plan
  • DOE results
  • Pilot validation report
  • Sustainment monitoring framework
Get Started

Ready to start your project?

Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.