Pressure Equipment Design
Design and design assurance of new-build vessels, heat exchangers and pipework — to international codes.
Design, Integrity & Fitness for Service
Pressure-equipment engineering for Oil & Gas, Petrochemical and Power — keeping critical assets safe and in production.
30+ years of pressure-systems expertise
API 579 Level 1, 2 & 3 Fitness-for-Service
FEA to ASME VIII & PD 5500 codes
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30+years in Oil & Gas,
Petrochemical & Power
Petrochemical & Power
Who we are
Experienced engineering judgement.
An independent consultancy for the design, integrity and Fitness-for-Service assessment of pressure equipment — combining deep code knowledge with real FEA and pressure-systems experience.
Jamie Mathie C.Eng., F.I.Mech.E.
Director & Principal ConsultantWhat we do
Services across the equipment lifecycle
From new-build design to in-service assessment and compliance — to international codes.
Asset Integrity & Fitness for Service
Fitness-for-Service assessment of in-service pressure equipment across Oil & Gas, Petrochemical and Power.
Asset Integrity Management
Integrity management of pressure systems — from corrosion strategy to flange, hose and defined-life repairs.
Pressure Equipment Legislation
Advice on UK legislation for the design, construction and use of pressure equipment.
Case study
Digital twins on mature assets?
“Only 1–2% of reported anomalies require a Level 3 assessment — and you can run a lot of Level 1 & 2 assessments for the price of setting up a single digital twin.”
For a 1st-stage separator on an FPSO with localised CUI wall-loss, we ran an API 579 Level 3 elastic-plastic FEA to confirm it remained fit for service — and kept the model on file for fast re-runs.
API 579Level 3 elastic-plastic FEA
~£20ktypical digital-twin build cost avoided
Why miSolutions
Engineering you can defend
Valid assessments come from understanding the loads and boundary conditions properly — that's where 30 years pays off.
Efficient & competitive
The right assessment level for the anomaly — no overhead you don't need.
Senior engineers only
Experienced FEA and pressure-systems specialists on every job — no black-box guesswork.
Right data, right format
Inspection data gathered so it's genuinely usable — Excel for L1/2, STP/FEA for L3.
Get in touch
Let's talk about your pressure equipment
Tell us about the asset or assessment you need — we'll come back with a practical way forward.
Office
Mechanical Integrity Solutions Ltd
18 Harlaw Road, Aberdeen, AB15 4YY