Rehan Riaz

Tasnee is one of the largest petrochemical complexes in Saudi Arabia, and I am currently working as Senior
Process Engineer and Process Simulations Subject Matter Expert (SME). My responsibilities include
reviewing licensor technologies, coordinating with licensors, supporting technology selection, developing
process simulation models, and conducting process studies for the Ethylene Cracker and Propane
Dehydrogenation (PDH) plants. I have worked on the following’s key projects;
• Life Cycle Assessment (LCA) study to calculate Tasnee products carbon footprints from Cradle-to-Gate.
• Linde Design Package review for PDH Deethanizer off gas recovery and integration to the cracker.
• Licensor PDP package and Feed Package review for Poly Acrylic Acid (PAA) pilot plant.
• Review of different decarbonization options by PDH Licensor (Lummus), Ethane Craker and SMR Licensor
(Linde), LCH technology by Jhonson Matthey and
• Ethylene Cracking Furnace simulation software selection study (SPYRO vs COILSIM1D).
• Simulation model Development of PDH and SMR.
• PDH Deethanizer off gas recovery study.

Jacobs is positioned as one of the leading Engineering Company working in Petrochemical and Oil & Gas sectors.
Currently working as Process Engineer on SRU plants upgrade in Ras Tanura Refinery for the addition of TGT unit downstream of existing Claus process to achieve new emission limitation by General Authority for Meteorology & Environmental Protection (GAMEP).


 PROJECT: - Upgrade Sulfur Recovery Unit (SRU) at Ras Tanura Refinery, Saudi Arabia
CLIENT: - Ras Tanura Refinery, Saudi Aramco
Position: Process Engineer
Currently Working on Project Proposal of Ras Tanura Refinery SRU Project as Process Engineer for P&ID’s and PFD development.

 PROJECT: - Performance Deficiency Items Improvement Project at Riyadh Refinery, Saudi Arabia
CLIENT: - Riyadh Refinery, Saudi Aramco
Position: Lead Process Engineer
Worked on Detail Design of HVGO discoloration project by rerouting the CDU over flash stream to VDU along with CDU bottom. This involves Vacuum Charge System upstream system hydraulics, Steam Injection at Vacuum Heater cross over, addition of radiant tubes in vacuum charge heater and Transfer Line Hydraulics with SME support.

 PROJECT: - Supercritical Solvent De-Asphalting Unit at Riyadh Refinery, Saudi Arabia
CLIENT: - Riyadh Refinery, Saudi Aramco
Position: Process Engineer
Worked on Project Proposal of Riyadh Refinery SSDA Project as Process Engineer for PZV sizing and flare header sizing. This involves the PZV sizing for the supercritical fluids as well.

 PROJECT: - Fuel Oil Blend and Fuel Oil Cooler Installation at Riyadh Refinery, Saudi Arabia
CLIENT: - Riyadh Refinery, Saudi Aramco
Position: Lead Process Engineer
Worked on Detail Design development of De-Mineralized Oil (DMO) blending recipe with cutter stocks like HGO, LGO, Kero and Vacuum Residue along with process data input for Fuel Oil cooler detail design.

 PROJECT: - Upgrade Sulfur Recovery Unit (SRU) at Riyadh Refinery, Saudi Arabia
CLIENT: - Riyadh Refinery, Saudi Aramco
Position: Process Engineer
Worked on Project Proposal of Riyadh Refinery SRU Project as Process Engineer for hydraulic calculations of pumps.

 PROJECT: - Bottom of the Barrel Project Early Tie-In Package at Petro Rabigh, Saudi Arabia
CLIENT: - Petro Rabigh Refinery, Saudi Aramco
Position: Lead Process Engineer
Worked on Detail Design of BOTB early tie-in package at Petro Rabigh Refinery.

 PROJECT: - SASREF Vapor Combustion System Feed Project Jubail, Saudi Arabia
CLIENT: - Saudi Aramco-Shell Refinery Co.
Position: Lead Process Engineer
Worked as Lead Process Engineer for Feed Project of vapor recovery from Marine Vessels and subsequent combustion at Causeway Tank Farm to reduce VOC emissions and to comply with Royal Commission Environment standard.

 PROJECT: - SASREF Instrumentation Master Plan (IMP) Project Jubail, Saudi Arabia
CLIENT: - Saudi Aramco-Shell Refinery Co.
Position: Lead Process Engineer
Worked as Lead Process Engineer for executing the Detail Design of IMP-III project which included instrumentation and control upgrade for entire refinery. Process intensive control loops such as compressor anti-surge, furnace burners minimum firing control and safeguarding, distillation column overhead vacuum system pressure control, over fill protection control and safeguarding to be upgraded to latest Shell requirements.

 PROJECT: - BP’s Khazzan gas project, OMAN
CLIENT: - British Petroleum (BP)
Position: Design HSE (DHSE) Engineer
Worked as Design HSE Engineer (DHSE) for the development of thermal radiation and dispersion modeling, Fire Hazard Analysis (FHA) for Jet Fire, Flash Fire, Explosion Modeling (BLEVE, BLAST), Escape Route Design, Safe Operating Limit (SOLR) Register, HP/LP Interface Register, Chemical Register, Safety Related Device (SRD) Registers, and HAZOP studies etc.

Roles and Responsibilities:
• Conduct different Engineering Studies to find the root cause of the problem and their mitigations.
• Perform hydraulic calculations to confirm the battery limit conditions. Sizing of pumps and control valves.
• Relief Load estimations for different scenarios and PSV Sizing/Rating of the equipment.
• Bid evaluation, preparation of the Material Requisitions (MR) for PSVs for purchase. Coordination with vendors for the technical review of control valves and the PSVs.
• Preparation of Battery Limit Tables, Utility Summary and Alarm & Set Points list.
• Equipment sizing such as two phase separator, heat exchangers and tanks sizing.

Roles and Responsibilities:
• Process equipment/tank sizing
• P&ID’s, PFD’s, UDD’s, and UFD’s, development
• Relief load scenario building, relief load calculations, PSV sizing
• Hydraulics, Control valve, Orifice, Pump and compressor calculations.
• Process simulation/Heat exchanger rating
• Preparation of line index, equipment list, alarm & set point list

 PROJECT:- ADHI NGL/LPG Recovery Plant III project
 CLIENT: - Pakistan Petroleum Ltd
Position: Area Lead Engineer
LPG/NGL recovery project mainly consists of oil stabilization section (which includes three phase separators, heat exchangers, Associate gas compressors, etc.) and LPG & NGL recovery section (which includes gas dehydration & cryogenic units, De-Ethanizer & Butanizer etc.). My responsibilities were;
• Vessel Sizing
• LPG Bullet sizing
• Atmospheric Vent sizing/Dispersion Analysis
• Skim tank vent KO Vessel Sizing
• Utility demand calculations
• Fuel Gas, Potable/Raw water adequacy report

 PROJECT:- Borouge-Poly Olefins Flare Recovery Project
 CLIENT: - Abu Dhabi Polymers Company Limited
Position: Area Lead Engineer
Polyethylene and Polypropylene flare gas along with the Nitrogen is recovered and after washing and compression, Nitrogen is separated in BORSIG Membrane System, Ethylene and Propylene is recovered in hydrocarbon recovery unit using lights gas column and C3/C4 column. Along with initial sizing of columns my responsibilities are;
• Prepared Piping & Instrumentation Diagrams (P&ID’s)
• HAZOP Session with CLIENT (Borouge) in UAE
• Prepared Utility Distribution Diagrams (UDD’s)
• Prepared Operation & Control Philosophy
• Prepared Process Flow Diagrams (PFD’s)
• Prepared Cause and Effect Diagram
• Utility Flow Diagrams (UFD’s)
• Prepared Alarm & Set point list

 PROJECT: - Makori Field Development Surface Facilities
 CLIENT: - MOL Pakistan Oil and Gas Co. B.V.
Position: Area Lead Engineer
Makori surface facility was developed for production and sale of Natural gas, Oil/Condensate and LPG using gas primarily from wells of Makori. My responsibilities were;
• Stabilized Oil/Condensate Tanks sizing
• Tentative sizing of PVRV & emergency vent
• Atmospheric Vent sizing/Dispersion Analysis
• Instrument Air receiver sizing
• Skim tank vent KO Vessel Sizing
• Fuel Gas, Potable/Raw water adequacy report


 PROJECT: - 4000 M.T Double wall New Ammonia Storage Tank
 CONTRACTOR: - Etimaad Engineering (Pvt.) Limited
Position: Process Engineer
My responsibilities were;
• Technical evaluation of Ammonia tank sizing
• Commissioning of new Ammonia tank
• HAZOP study & P&ID review of new Ammonia storage tank

DHFL is Ammonia/Urea plant having total capacity of 815 MTPD Ammonia and 1100 MTPD Urea Fertilizer. As Process Engineer I had worked on the following units of M.W Kellogg designed Ammonia plant.
(a)De-sulphrization unit (b)Reforming unit (c)High & Low temperature shift convertors (d)CO2 removal unit (e)Ammonia conversion and refrigeration unit.

Roles and Responsibilities:
• Calculation of material and energy balance of ammonia plant for trouble shooting and approach to Equilibrium Temperature of catalysts to evaluate their performance.
• Rating and sizing of equipment’s with the help of engineering design software’s.
• Preparation of PFD’s, P&ID’s, and process equipment data sheets and their technical evaluation.
• Review and provide process input of all prospective and ongoing engineering projects.
• Review and check all engineering documents provided by vendors and contractors and provide guidance and clarifications.
• Monitoring of process parameters of following equipment’s:- Hydrotreater, Desulphrizers, Reformer, High Temperature Shift Converter, Low Temperature Shift Converter, Catacarb System, Methanator, Ammonia Converter etc.
• Carrying out inspection activities during plant downtime.


Achievements:
• Worked as a Team Leader for implementation of “DuPont” Process Safety Management System. My responsibilities were: - Process Hazard Analysis (PHA), Incident Investigations, Task Risk Assessment and all activities which come under the heading of Management of Change (MOC).
• Reduced 1.5 MMSCFD Fuel Gas demand of Primary Reformer, by successful washing of primary reformer convection section tubes during annual turn-around.
• Reduced Primary reformer furnace HOTSPOTS temperatures from 1700oF to 1650oF with the help of optical pyrometer and manual adjustment of burners firing.
• Prepared Startup and Shutdown checklists to reduce equipment, machinery and reactors mishandling/damage.
• Successfully completed controlled oxidation of reduced Ammonia converter catalyst over a short period of one year.

 PROJECT: - 4000 M.T Double wall New Ammonia Storage Tank
 CONTRACTOR: - Etimaad Engineering (Pvt.) Limited
Position: Unit Engineer
• Technical evaluation of Ammonia storage tank sizing
• Commissioning of new Ammonia storage tank
• Ammonia/Utility tie-in conditions verification
• HAZOP study of new Ammonia storage tank tie in with old storage tank
• P&ID review of new Ammonia storage tank
• Execution of Tie-in job at various plant site

➢ Trainee Engineer (STAPLE FIBER PLANT)

Roles and Responsibilities:
• Understanding the operations undergoing at staple fiber plant.
• To Study the technical literature & APIs of selected topics.
• To do the line tracing of plant