Allan Ronald Dones
ASEAN Eng · RME (PRC) · LSSGB
Licensed Mechanical Engineer and accredited ASEAN Engineer. Since 2006 I have taken rotating equipment and complex mechanical packages from FEED through procurement to commissioning, across oil & gas, petrochemical, mining and energy projects in the Middle East, Asia-Pacific, Europe and North America.
My Journey to the Profession
Twenty years, nine roles, five countries — and how the specialisation happened.
Why This Site Exists
What it's for, and what you can actually take from it.
Most rotating equipment knowledge lives in spreadsheets on one engineer's laptop. It gets lost when they change jobs. This site publishes some of mine as working tools — free, no sign-up, running entirely in your browser.
Check a vendor's numbers
When a supplier quotes a TDH and BHP, you need an independent calculation to judge it against. That's what the tools do — compute the requirement, then compare.
For engineers starting out
Every tool shows its formulas and assumptions on screen. The point isn't to hand you an answer — it's to show the derivation so you can defend it in a review.
Nothing leaves your browser
No accounts, no uploads, no analytics on the tools. Your process data stays on your machine — which matters when the inputs are client-confidential.
A caution worth stating plainly: these tools are engineering aids, not a substitute for discipline judgement or a stamped calculation. Verify every input against your project datasheets and P&IDs, and confirm the reference points match your case before using any output in a design decision.
About
What I do, and the part of a project I own.
Twenty years of comprehensive EPC and FEED experience. My career covers the entire project lifecycle — Front-End Engineering Design and FEED verification, detailed engineering, procurement support, package management, construction, and pre-commissioning and commissioning site support. Onshore and offshore.
I specialise as a Senior Rotary / Mechanical Package Engineer, holding sole discipline responsibility for multi-million dollar rotating equipment packages delivered for global majors including Saudi Aramco and Santos Ltd, alongside Shell, Marathon Petroleum, Dow Chemical and ADNOC's Borouge.
My work centres on the package procurement cycle: generating technical specifications and mechanical datasheets, raising Material Requisitions, leading Technical Bid Evaluations, and executing thorough Vendor Document Reviews. On site I have supported pre-commissioning and commissioning, witnessed Factory Acceptance Testing, and participated in Joint Engineering Inspection & Testing prior to client turnover.
I work to API 610, 613, 614, 616, 617, 619, 670, 671 and 682, alongside ASME, TEMA and the relevant NFPA codes — and I manage the multi-discipline interfaces where mechanical packages meet process, electrical, instrumentation and civil scope. I currently work in Qatar as a Senior Mechanical Engineer with project management responsibility on high-value construction projects.
Expertise
Where the working week actually goes, and the equipment and codes behind it.
Current role composition
Where the working week goes — and how each area is measured.
These are the measures the work is held to, stated as method rather than as project figures. Actual performance data belongs to the projects and clients concerned and is not published here.
Equipment
Codes & standards
Software
Engineering Tools
Working calculators built from the engineering practice, not brochures about it. Each runs entirely in your browser — nothing is uploaded, nothing is stored. Organised by equipment class; the library is being extended.
Pumps
3 availableVertical Pump Evaluation Tool
Total differential head at impeller centerline and brake horsepower, with a vendor sufficiency check against the calculated system requirement.
Open tool →API 610 Performance Test Result Verifier
Corrects witnessed shop-test points to rated speed by the affinity laws and checks head, power and efficiency against the API 610 11th Edition Table 16 tolerances.
Open tool →Pump MAWP & Material Check
Builds the maximum discharge pressure from head and relative density, applies the API 610 11th Edition Sec. 6.3.5 requirement and its pressure-rating floor, then checks the vendor's MAWP and the offered materials against the Annex H class — one pump or a whole register.
Open tool →Compressors
2 availableCompressor Performance Estimator
Single-stage centrifugal and reciprocating estimation — polytropic head, discharge temperature, shaft power, impeller sizing, volumetric efficiency and cylinder bore, with SI and English units side by side.
Open tool →Compressor FAD Site Conversion
Converts Free Air Delivery quoted at ISO 1217 or normal reference conditions to the actual inlet volume required at site — altitude, ambient temperature, humidity and intake loss — and checks the offered package against the duty.
Open tool →Gas Turbines
In developmentBuilding Management & HVAC
1 availableCredentials & Awards
Registrations, accreditations and qualifications — with current status stated plainly.
Professional registration
Education & certification
Every entry above is backed by the certificate itself, together with certificates of employment and independent verification routes, in the full accreditation register →
Employment merits & awards
Recognition received in service.
Major Projects
Packages I held discipline responsibility for. Current-employer project identifiers are withheld under confidentiality.
Discipline leadership and project management. Engineering management, technical review and approval, project controls, procurement, construction support and management of change.
Hybrid compression plant: two 4,000 hp electric-driven reciprocating compressors with VFD and two 4,200 hp steam-turbine-driven centrifugal compressors, integrating green hydrogen generation, rooftop PV and hydrogen blending.
Approximately 200 pump services for hydraulic transport of slurry in mineral extraction and processing. System optimisation with Process Engineering, validated by hydraulic calculation in AFT Fathom.
Two open pit mines and a processing plant with associated infrastructure. Led all mechanical engineering activities for the Manila scope — planning, resource management, progress tracking, deliverable quality and risk mitigation.
Detailed engineering and package management through procurement to close-out, including resolution of technical queries during installation and commissioning.
Detailed engineering for non-API and specialty pump services across the facility.
Front-end engineering design: specifications and datasheets for rotating equipment, inter-discipline deliverable review, and procurement support for EPC cost estimation.
Offshore redevelopment. Package management from requisition through supplier document review to close-out.
Package management and procurement support, plus fire suppression review — CO₂ for gas turbine enclosures to NFPA 12, and NOVEC 1230 clean agent for diesel generator packages to NFPA 2001 and FM-5600.
Detailed engineering through fabrication. Supplier works visits, witnessed Factory Acceptance Testing and signed equipment acceptance, fabrication yard commissioning support, and Joint Engineering Inspection & Testing prior to client turnover. Reviewed offshore fire fighting for production deck modules.
Detailed engineering including site investigation and survey to verify the validity of FEED documents and identify conditions affecting work planning and cost.
Project specifications and mechanical equipment datasheets, and RFQ through Purchase Order for the packaged equipment scope.
Garyville major expansion for Marathon Petroleum (Louisiana), Jack County Unit 2 for Brazos Electric Cooperative (Texas), and the Dow Falcon proposal for The Dow Chemical Company (Texas).
Testimonials
LinkedIn recommendations, reproduced verbatim. Each is publicly visible on my LinkedIn profile.
Allan is knowledgeable, sincere and hard-working Rotating Equipment Engineer. I have personally witnessed Allan delivering excellently in MGSE Saudi Aramco Phase-1 project, handling all the pumps involved in the project and successfully completed his assignments on time. I also worked with him in some of the bidding works, and he proved that he is capable of working in various formats of design & Engineering works. He easily gets along with the people and he is a perfect team player.
Allan is sincere and hard working Mechanical Engineer with proven technical knowledge on Rotating Equipments. He worked with me on prestigious Master Gas Expansion Project Phase I and II for Saudi ARAMCO. Strongly Recommended.
Allan is a hard-working and diligent mechanical engineer who performs his role with true professionalism. He takes great pride in his work and is a very approachable individual. He has demonstrated strong team-working skills, as well as the willingness and ability to share his knowledge with more junior colleagues. Allan also has a highly commendable approach to personal development and extra-curricular learning.
Contact
Open to technical discussion, package review and consulting enquiries. Pick whichever channel suits you.
Send a message
Goes straight to my inbox. I read everything; expect a reply within a couple of working days.