Process Capability Improvement
Cp / Cpk uplift from baseline through DOE driven variation reduction and design improvement
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.

Our implementation model
A practical, phased delivery approach that runs from gap assessment through operational embedding and is built around your regulatory context.
Define product specifications based on customer requirements, regulatory limits, and process physics, document USL / LSL.
Measure baseline process performance, mean, standard deviation, distribution shape, autocorrelation, special cause patterns.
Calculate Cp, Cpk, Pp, Ppk, benchmark against industry standards (>1.33 capable, >1.67 highly capable, >2.0 Six Sigma).
Design improvement strategy, variation reduction (Six Sigma), spec adjustment (with customer agreement), automation, control improvement.
Pilot improvements via DOE / pilot run, validate via statistical hypothesis testing, scale to full production.
Ongoing SPC monitoring, periodic capability re assessment, integration with management review and customer audits.
Process Capability in full scope

Value of Process Capability Improvement
- Variation reduction reducing incidents
- Stable process reducing operator intervention
- Standard work supporting capability
- Early warning through SPC integration
- AIAG / ISO 22514 audit defence
- Customer (automotive / aerospace) PPAP
- ISO 9001 Cl.8.5.6 evidence
- Statistical specification defence
- Cpk uplift (typical 0.5 to 1.0 improvement)
- Defect reduction
- Reduced customer rejection
- Reduced inspection burden
- Customer loss prevention
- Avoided cost of poor quality
- Reduced inspection
- Reduced rework / scrap
Codes & standards we work to
Triggers that signal the need
Where Process Capability Improvement applies
Wellheads, separators, gas compression, FPSO topsides, produced water systems.
Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.
Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.
Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.
Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.
Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.
Tangible deliverables
- Specification register
- Capability baseline reports
- Improvement strategy plan
- DOE results
- Pilot validation report
- Sustainment monitoring framework
Ready to start your project?
Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.