Damodar DasiMechanical & Project Engineer
I take mechanical packages from tender to site acceptance. Across compressor packages, PSA nitrogen systems, mobile fuelling units, storage tanks and skids, I lead the engineering, drive procurement and vendor coordination, and stay with the client through manufacturing, FAT and SAT.
4+ years on compressor, compander and PSA nitrogen packages, then fuel systems in the UAE.
Mobile, portable and skid-mounted fuelling units · UAE.
500 L → 60 KL
Emarat 40 FT MFU · tender → SAT
Design team led and mentored · Guiding Star ×2
Most of my projects start with a client spec and finish with equipment that has been built, tested and installed. I own the design, and I also handle the coordination needed to get it built.
On a typical package I do the engineering and the project coordination: the full 3D model, equipment arrangement, process and utility piping, lube-oil and seal systems, base frames and skids, GA and fabrication drawings, and the MTO/BOM. After that I follow the design through procurement, manufacturing and FAT/SAT.
I spent four-plus years at DesignTech Systems on centrifugal compressor, compander and PSA nitrogen packages for international oil & gas and industrial projects, where I led and trained a team of six designers. Since November 2025 I've been in the UAE at Meta Green, designing mobile and skid-mounted fuel systems and storage tanks, and leading design on the Emarat 40 FT mobile fueling unit from tender to SAT.
Six areas of package work. Fuel, tank and skid projects are in the register below; compressor and PSA project detail is shared at interview.
Complete 3D packages for centrifugal compressors and companders: process piping, lube-oil and seal-gas systems, base frames, foundation drawings and manufacturing/FAT support.
Compressed-air and PSA nitrogen packages: oil-free compressor, air-treatment train, receivers, PSA generator, nitrogen buffer and instrumentation interfaces.
Mobile and portable fueling units, dual-compartment tanks, dispensers, vapor recovery, ATG, overfill protection, emergency venting and safety systems.
About 25 fuel and process tank designs from 500 L to 60 KL: geometry, nozzle schedules, supports, and GA/fabrication drawings.
See the tank portfolio View in the register→ Discuss a storage tankPump, equipment-support, tank, instrument and fuel skids; structural frames and platforms with weight, CoG and lifting considerations.
See the skid portfolio View in the register→ Discuss a skid or structural frameEquipment arrangement, package piping and supports, tie-in points and customer interfaces, pulled together into one layout the workshop can build.
Tap + on any project for photos and the scope split (what I designed, performed, reviewed and coordinated), or open the full page.
No projects match that search.
F-01
F-07
F-02–06
S-01
Customer drawings, project numbers and proprietary documents are not published. Project and workplace photos are in the engineering gallery.
Design is only part of the job. A package still has to be planned, bought, built and handed over, and I stay with it through all of that.
Design basis, equipment sizing and selection, complete 3D packages, process/lube/seal piping, GA and fabrication drawings, MTO/BOM and mechanical calculations to API, ASME and UL codes.
Project Coordinator and Head of Design on the Emarat MFU from tender and award through procurement, production, FAT and SAT; led and reviewed the work of a 6-person design team at DesignTech Systems.
Customer technical clarifications and inspections, vendor and OEM coordination, and day-to-day interfaces with process, instrumentation, procurement and production teams.
Design ownershipCoordinationSupport / participationTypical involvement on my packages. It changes from project to project, so each case study gives my exact role.
Every package starts with the customer's paperwork.
| Item | Requirement |
|---|---|
| Tank | Ø1800 × 4500 mm inner · SA36 · 8 mm |
| Safe fill | 10,000 L · 5 % ullage |
| Dispensing | 2 dispensers (D1 / D2) · 2″ outlets |
| Controls | IP67 electrical panel with ATG console |
| Skid | 6500 × 2600 mm with canopy |
| Status | RFQ design completed · awaiting PO |
What the RFQ asked for, as captured on my GA. Explore the drawing →
Fix what the package has to meet before anything is drawn.
| Item | Basis |
|---|---|
| Code | ASME VIII Div 1 |
| Design / working pressure | 8 bar / 6 bar |
| Design temperature | Ambient |
| Corrosion allowance | 1 mm |
| Joint efficiency | 0.85 (spot RT) |
| Hydrotest | 12 bar |
| Material | ASTM A36 · shell 8 mm · heads 10 mm |
Taken from the technical notes on my S-01 GA.
Size the main items and get the vendors aligned.
| Tag | Item | Size |
|---|---|---|
| N1 | Tank loading / filling | 3″ |
| N2 / N3 | Fuel dispensing D1 / D2 | 2″ |
| N4 | Breather vent | 3″ |
| N5 | ATG probe | 2″ |
| N6 | Thief hatch | 6″ |
| N7 | Dip stick | 2″ |
| N8 | Manhole | 600 mm |
| N9 | Primary emergency vent | 4″ |
| N10 | Tank drain | 2″ |
The equipment and connections the tank was sized around, from the nozzle schedule on my GA.
Build the whole package in 3D. This is the master reference.
Rotate it, cut a section and read the nozzle tags →A simplified web version built from the GA dimensions. Customer package models stay confidential.
Route every line and check it.
The connections in the F-01 cabinet photos. Try line sizes in the pipe velocity tool.
Turn the model into drawings the shop can build from.
| Tag | Service | Size | Rating | Facing |
|---|---|---|---|---|
| N1 | Inlet | DN100 | Class 150 | RF |
| N2 | Outlet | DN100 | Class 150 | RF |
| N3 | Drain | DN50 | Class 150 | RF |
| N4 | Vent | DN25 | Class 150 | RF |
| N5 | Manhole | DN600 | – | Bolted |
| N6 | Manhole | DN500 | – | Bolted |
| N7 | Manhole | DN450 | – | Bolted |
As issued on my GA. Explore the drawing with callouts →
Give purchasing exactly what to buy.
| # | Item | Specification | Qty |
|---|---|---|---|
| 1 | Shell | ASTM A36 · 8 mm · Ø1800 ID × 1800 T/T | 1 |
| 2 | 2:1 ellipsoidal head | ASTM A36 · 10 mm · Ø1800 ID | 2 |
| 3 | Leg | ASTM A36 · 200 × 10 × 1200 | 4 |
| 4 | Base plate | ASTM A36 · Ø300 × 15 | 4 |
| 5 | Gusset | ASTM A36 · 10 mm | – |
| 6 | Nozzle pipe | ASTM A106 Gr B · DN100 / DN50 / DN25 | 2 / 1 / 1 |
| 7 | Flange | ASTM A105 · B16.5 Class 150 RF | 4 |
| 8 | Manhole | DN600 / DN500 / DN450 · bolted cover | 3 |
| 9 | Fasteners | Nuts ASTM A563 · washers ASTM F436 | – |
Built from the GA notes and nozzle schedule. Quantities not shown on the drawing are left as –.
Stay with the package while it is built.
| Part | Mass | CoG above grade |
|---|---|---|
| Shell | ~642 kg | 2.55 m |
| Heads (2) | ~558 kg | 1.47 / 3.63 m |
| Legs + base plates | ~108 kg | ~0.6 m |
| Empty (main parts) | ~1.3 t | ~2.37 m |
| Full of water (hydrotest) | ~7.4 t | ~2.52 m |
An illustrative estimate worked from the GA dimensions (steel 7,850 kg/m³). Nozzles, manholes and gussets excluded. Not an issued report.
Prove it works, then hand it over.
The checks called up on my GA, the list a FAT would close out.
Quarterly Certificates of Recognition from DesignTech Systems.
I list a standard only where it was part of a project's engineering basis. Not every one applies to every project.
Three small calculators I use in early sizing. Try them with your own numbers; the defaults are from my projects.
Quick estimates for early sizing and conversation, not a substitute for design calculations to the governing code.
Roles, project scope, tools, standards and education, on two pages.
If you're hiring for an EPC contractor, OEM, package fabricator or oil & gas operator, or just want to talk through a package, contact me directly.
This portfolio contains non-confidential summaries only. Proprietary drawings, customer-controlled documents and project numbers are not published.