Quick answer
Separator & Scrubber Design covers designing inlet separators, knock-out drums, scrubbers and filters for oil & gas. Done properly, it follows ASME Sec VIII Div 1/2, EN 13445, PD 5500 and produces mechanical design calculations that a fabricator or reviewer can use without rework. Structural Engineering Services delivers separator & scrubber design to clients in 40+ countries with a senior-engineer review on every package.
The 7 mistakes that cause most separator & scrubber design rework
After reviewing hundreds of incoming separator & scrubber design packages, the same seven failures account for the overwhelming majority of rework. Each is listed with the fix we apply on our own projects.
- No agreed design basis — fix: a signed basis-of-design before modeling starts.
- Wrong code edition — fix: the compliance matrix names the edition, not just the code.
- Skipping the independent check — fix: every package passes a checker who did not build it.
- Poor input control — fix: a single register of received documents and revisions.
- Ambiguous revision control — fix: formal transmittals so the current issue is never in doubt.
- Underestimating client specifications — fix: operator standards mapped at kick-off, not discovered at review.
- No constructability review — fix: a fabricator's-eye pass before issue for construction.
A QA checklist you can reuse
Whether you use us or another supplier, hold your separator & scrubber design package to this acceptance checklist before you pay the final invoice:
- Mechanical design calculations — present, complete and revision-controlled.
- General arrangement drawing — present, complete and revision-controlled.
- Fabrication & detail drawings — present, complete and revision-controlled.
- Nozzle load & local stress checks — present, complete and revision-controlled.
- Code references (ASME Sec VIII Div 1/2) shown on every calculation and drawing.
- Checker's review record included in the transmittal.
What good looks like
A well-run separator & scrubber design engagement is quiet: few RFIs, no surprise change orders and output that your fabricator or reviewer accepts without a comments spiral. That outcome is designed in at kick-off — through the design basis, the compliance matrix and the review gates — not rescued at the end.

7 Common Separator & Scrubber Design Mistakes (and How to Avoid Them): FAQ
What are the most common separator & scrubber design mistakes?
Separator & Scrubber Design covers designing inlet separators, knock-out drums, scrubbers and filters for oil & gas. Done properly, it follows ASME Sec VIII Div 1/2, EN 13445, PD 5500 and produces mechanical design calculations that a fabricator or reviewer can use without rework. Structural Engineering Services delivers separator & scrubber design to clients in 40+ countries with a senior-engineer review on every package.
Which software is used for separator & scrubber design?
We deliver on licensed PV-Elite, Codeware COMPRESS, Autodesk Inventor and issue native files plus PDF, DWG and IFC on request.
Which standards do you follow for separator & scrubber design?
We work to ASME Sec VIII Div 1/2, EN 13445, PD 5500, API 650, TEMA, API 660, plus client specifications such as Shell DEPs and major operator standards.
How long does a separator & scrubber design package take?
Small packages are typically delivered in 3–7 working days; larger scopes are split into phased submissions agreed at kick-off.
How do I get a quote for separator & scrubber design?
Send your drawings or scope through our quote form — a senior engineer reviews them and returns a fixed-price proposal within 24 hours, free and without obligation.
