CURRICULUM VITAE – DARREN WALKER

NAME: WALKER, DarrenAddress: 37 Dovedale Road, Stockton on Tees TS20 2THPhone No.: (H) 01642959258 (M) 07702876895Email: darrenwalker1@hotmail.comDOB: 21/03/75Nationality: British

QUALIFICATIONS:

PhD Electrochemical Recovery of Copper using carbon felt electrodes UMIST (2001) (see section titled EA Technology) MEng (2:2) Chemical Engineering with Management. University of Birmingham (1997)

SUMMARY

6+ years oil and gas Brownfield experience from project scoping, to Concept, FEED & Detailed Design projects. 1+ years PTA plant process design (FEED projects) and R&D experience. 9 years process simulation & optimization experience. Primarily steady state process simulation for plant wide PTA plants,

ethylene plants, CO-GEN and utilities plants. Process engineering software experience includes: ABB PEL, PIPE NET, HTRI, Aspen Plus, Aspen HYSYS, AutoCAD and AVEVA

P&ID. Highly proficient in most MS Office products including VBA.

EMPLOYMENT / EXPERIENCE

Feb 2016 – Feb 2017 AMECFW Senior Process Engineer (Contract)

Numerous small projects from £50k up to £1M. Various activities included P&ID updates production of process and relief calculations and datasheets for various equipment items and instruments. Attend HAZOP’s, P&ID reviews, LOPA and SIL assessments, Relief Reviews Control Philosophies, C&E diagrams and process engineering scope and design package documents.

Projects include:

Red oil road tanker loading improvements, SABIC olefins. Lead the project from concept, through to detailed design. Project consists of new tanker loading pump, top loading arm, a semi-continuous sampling system, batch flow meter and control panel.

Initiator block valve improvement project, SABIC LDPE. Lead the project from concept, through to detailed design. Project consist of 6 new block valves that would allow 4000barg differential pressure across it.

Additional Furnace temperature transmitter project. Butadiene road tanker loading disinvestment project. New auto pit pump to remove rainwater from pit below HPS Separator on LDPE. Process Scope document for new flare tips on Olefins 6. BFW Pump RV replacement – Relief Study Steam pot level transmitter replacement due to PHR action New ultrasonic flow meters for quench oil system;

Nov 2014 – Sept 2015 Costain Oil & Gas Senior Process Engineer (Staff)

OPA – responsible for delivering numerous small brownfield projects across multiple jet fuel storage sites, including tank overfill protection, thermal relief studies, secondary and tertiary containment and site Interceptor replacements and upgrades.

TOTAL, New Propane refrigeration compressor system updating and review of system cause and effects. Developed an internal ‘How to Guide’ for P&ID’s to be used for new graduates.

July 2012 – Oct 2014 Fabricom Offshore Services Senior Process Engineer (Contract)

Bluewater Aoku-Mizu Gas Import project FEED verification study. Responsible for confirming control system suitability and to review HYSYS dynamic study to assess potential JT effects during start-up. In addition confirm the electric heater design was suitable. Develop initial revision of P&ID’s ready for Detailed Design project.

Enquest Northern Producer CAT 1 P&ID as building project. Primary engineering responsible for reviewing and delivering 155 surveyed P&ID’s. Co-ordinating with survey team offshore to assess any and all installed differences are inherently safe and fit for purpose.

Constructability assessment for Thistle Seawater Injection system. Responsible for creating a way to minimize need for the platform to be shut down while upgrades are being installed and while the platform is switched over to a new Delta V control system.

Aided in the development the Heat and Mass balance (Hysys) for Enquest Northern Producer Platform on a Gas Import Study. In addition to producing process datasheets for Gas Import Heaters.

Concept/Feed Study for an MGPS system for Marathon Oil on their Alvheim FPSO. Responsible for generation & checking P&ID’s, line lists, process datasheets & calculations for control valves, instruments, the MGPS reactor and relief valves.

EnQuest’s Thistle Platform upgrades and maintenance of the Injection water supply system. This included hydraulic modelling (Using Excel / HYSYS / PipeNet) of the seawater system, control valve and relief valve sizing. Creating process datasheets and producing calculations for relief & control valves, instruments, heat exchangers and seawater filters, as well as updating cause and effect diagrams and trip and alarm schedules etc. Enquest Thistle – Attended Firewater/Injection Seawater system HAZOP and signed off a number of HAZOP actions.

Process engineer for the Golden Eagle and Tartan replacement PIG receiver and MOL Pig Launcher at Claymore platform. Including updating P&ID’s PFD’s, control valve and instrument datasheets. Preparing documents including: ISO 10-4-18 report for PIG receivers, the control and operating, relief and blowdown and shutdown and isolation philosophies. Reviewing PIG receiver and Launcher interlock system.

April 2011 – July 2012 Invista Process Engineer (Contract)

Process engineering design duties on a PTA FEED project. The project is to install a new larger TA reactor and associated heat exchangers to increase throughput for Reliance in Patalganga, India. Part of my duties was to validate the reactor overhead heat exchangers and design the new exchangers and pumps to cope with additional demand. Responsible for designing 3 new heat exchangers and 3 pumps. Validate this against the existing process. In addition identifying cases and sizing pressure relief valves. Creating equipment, control and relief valve datasheets as well as instrument and line lists.

Attending PFD, P&ID reviews and PHA2 & 3 (HAZOP) meetings. The tools used include Aspen Plus for (H&MB) HTRI for exchanger design, PEL (including Piper and physpack).

Researched the use of Organic Rankine Cycles in a PTA process to optimize energy usage/recovery.

Cost analysis and simulation study on a debottlenecking project to convert a conventional distillation column into an azeotropic distillation process. The azeotropic distillation process has the potential for increased throughput and significant energy reduction.

Responsible for the production of the Heat and Mass Balance from purpose built Aspen Plus Simulation used extensively throughout the project for numerous FEED projects.

October 2010 – April 2011 Aveva Solutions Application Consultant

Delivering technical support to customers and supporting the sales team by performing technical demonstrations and training.

Responsible for creating new demonstration material for AVEVA PID and AVEVA Diagram intelligent P&ID drafting systems. In addition full training was given for: AVEVA PDMS – Equipment & Piping & Basic Administration, AVEVA PID User, Admin and Reports Training.

July 2007 - October 2009 Aspen Technology Senior Consultant

Delivering closed loop optimization systems on Ethylene Plants. Responsible for building a steady-state plant model for Real Time Optimization systems for TOTAL and Napthachimie.

This required detailed understanding of ethylene furnaces, distillation columns, refrigeration systems (multi stage compressors) and utilities systems).

The process model is designed to mimic the plant behaviour and control system. This was achieved by reviewing the plant PFD’s, PID’s and equipment data sheets. Responsible for integrating all the process model sections and areas into one large process model that contains over 3million variables and parameters.

Onsite commissioning for optimization system upgrades at TOTAL in Belgium, Borealis in Sweden and Naphtachimie in France. This included process model improvements/upgrades and debugging.

March 2005 – July 2007 Emerson Process Management Senior Process Engineer

Technical lead engineer responsible for the technical delivery of open loop optimization systems (which provides advisory information to operators to provide plant wide set points using an economic objective function (to maximize profit or minimize costs).

Develop an online simulation with online and offline user interfaces (OSI Process Book & Excel). Leading the project from kick off to delivery including handling the client, documentation, system testing (FAT/SAT), graphical interface (For online systems use PI process book and offline systems MS Excel were used). On site commissioning and engineer and operator training. Such optimization systems include:

CITGO A Refinery Powerhouse in Louisiana. The optimization system provided benefit in excess of US$5m pa. Trans Alta a Canadian cogen facility audited optimizer benefits were in excess of $10 million Canadian dollars per annum.

Designed to detect and size significant instrument error in real time and inform the operator (on screen alarm) via a purpose built PI process book interface. The project required significant product development and improvement. I managed all the technical aspects across 3 departments (software development, the project build and testing team and the interface and historian build) in addition to managing the customer. The system provided the customer with a system that meant that their steam and power customers had more accurate billing more of the time.

March 2001 – March 2005 Emerson Process Management Process Engineer

I was a project engineer on numerous open loop optimization systems, for example Eastman Chemicals in Tennessee where the company won an award (American Chemistry Council Exceptional Merit Award) due to the benefits attained by the optimization system.

General tasks including process model building, fitting and testing. This included creating simulations using Emerson’s RTO software to simulate gas and steam turbines, HRSG’s, boilers, steam headers, fuel systems, internal systems including feed water pumps, fans, heaters and de-aerators as well as the economic objective function. The plants mode of operation and control and using parameter updating to match the current equipment and plant performance.

Other roles and responsibilities included a technical lead engineer role for an upgrade NOAH application. The NOAH application simulates the contractual allocation of gas from fields in the North Sea to St. Fergus, where it is processed to sales gas and NGL.

September 1997 – March 2001 EA Technology Research Associate

Process Research Engineer for an industrially relevant R&D project gaining industrial experience while working towards a PhD. The research included: A pilot plant study of a novel counter-current flow-through electrochemical reactor to deposit copper within a carbon felt electrode. A fortran finite element mathematical model was used to help understand experimental data and determine key operational parameters.