HECTOR ALFONSO SIERRA SIERRA Project Engineer - Engineering Team Leader

Mobile: (+57) (300) 569-4020 / (+57) (310) 867-6456

E-mail: hector.sierra@snclavalin.com

hsierra@engineer.com hsierras@gmail.com

PROFESSIONAL PROFILE

Senior Eng ineer qual i f ied by more than twenty four years of exper ience wi th in the

petro-chemical indust ry and other EPC pro jects . Broad based respons ib i l i t ies as a

pro ject manager and eng ineer ing leader , pro ject techn ica l assurance leader ,

c iv i l /s t ruc tura l spec ia l is t and coord inator of EPC projec ts in Co lombia and abroad.

Comprehens ive knowledge and broad exper ience on conceptua l , bas ic and deta i led

engineer ing ; construc t ion s uperv is ion and techn ica l d i rec t ion dur ing the execut ion of

pro jects in the Oi l & Gas industr y as we l l as in other EPC projects which require

in tegrat ion of severa l engineer ing spec ia l t ies such as process , ins t rumentat ion,

p ip ing , mechanical , e lec t r ica l and c iv i l .

Act ive ly invo lved in in terd isc ip l inary pro jec ts such as:

Fac i l i t ies development on Hydrocarbon Explorat ion , Ex trac t ion , Ref in ing and

Transpor tat ion areas

Deve lopment of pe tro leum ref in ing & produc t ion p lants .

Power Genera t ion P lants .

Deve lopment of food process ing p lan ts .

PROFESSIONAL EDUCATION / TRAINING / COURSES

M.Sc. Hydrocarbon Management – Universidad de Viña del Mar – Chile In progress

B. Sc. Civil Engineering, Universidad Nacional de Colombia 1988

Engineering Projects Management –Universidad Nacional de Colombia AIEUN 2000

Project Management – Universidad Nacional de Colombia – Economy Faculty 1990

Technical English - Universidad Nacional / British Council 1990

Budgets and Construction Programming - Universidad Nacional de Colombia – AICUN 1990

Pathology of Structures – ACI Colombian Section 1989

Concrete Technologies – Universidad Nacional de Colombia – AICUN 1987

STANDARDS AND SOFTWARE SKILLS

Knowledge and use of technical standards and design codes such as:

IP Exxon International Practices of Exxon Mobil Corporation

API American Petroleum Institute, API 650 / API 620 / API 686 / API 653

IBC International Building Ccode - ICC

AISC American Institute of Steel Construction

ACI, American Concrete Institute ACI 318 - ACI 350

NFPA National Fire Protection Association - NFPA 10 / NFPA 30

Knowledge and use of specialized software as

Ms PROJECT (Advanced)

Ms Excel (Advanced)

SAP2000 (Advanced)

STAAD PRO (Intermediate)

ROBOBAT (Intermediate)

AutoCAD (Advanced)

RESPONSIBILITIES

As Project Engineer

I offer the required support to carry out all activities related to:

Participation on the evaluation of reference terms and project philosophy.

Qualification of proposals for engineering, construction and Erection.

Particular knowledge of all engineering specialties involved in the project.

Define project’s scope and deliverables schedule.

Quantification and control of man-hours in the development of conceptual, basic and detailed

engineering.

Bridge between the client and other stakeholders within the project such as providers and

subcontractors.

Planning (WBS) and control of project’s integrity during all its phases (Design, Construction,

Erection and Implementation).

Comprehensive management of project changes as new requirements are introduced by the

client, this management is done by creating change orders to adjust project’s scope.

Basic coordination of HAZOP studies for revamping projects

Creation of executive reports for clients.

Budgeting and cost control, approval and supervision of equipment purchases.

Risk management for Implementing the design. HAZOP, Peer Review, Design Review and

Constructability

As Engineering Team Leader

On general engineering coordination, I am liable for:

Possessing general knowledge of all engineering specialties involved in whole projects.

Providing efficient support to project management to facilitate the execution of activities in

accordance with the scope agreed with the client.

Assisting the project manager during the project development and in the generation of external

and internal change orders. Verifying the amount of man-hours estimated taking into account

client’s needs to adjust the project scope.

Preparation of proposals and budgets including cost estimate for Engineering and built up

materials with their respective programming.

Development of Constructibility Studies. Development of programs and work strategies and

sequence of construction. Logistic works coordination, site selection, reference points and

temporary facilities.

Technical Direction and Supervision of Construction and Assembly during the design

implementation.

Quality Assurance and Quality Control for the best execution of Project.

PROFESSIONAL EXPERIENCE / PROJECTS

S N C L AV AL I N - I T AN S U C A S . A . S . July 2009 – October 2013

Position: Project Engineer and Engineering Coordinator of Hydrocarbon Projects

Duties / Responsibilities:

Integrate, coordinate and follow up the work of several engineering disciplines.

Director of technical supervision to control the detailed engineering designs which are

delivered by contractors and provide recommendations for approval in accordance with

standards and technical specifications.

Review material requisitions and approve purchase orders.

Review follow-up reports and update construction schedule of projects (both in time and

costs) and issue recommendations.

Projects:

2014

Detail Engineering – Castilla 3 Project. ECOPETROL - Production Management.

2012 - 2013

Conceptual Engineering – Costa Norte Colombia – Galan Project – Crude Evacuation

Program, PEC - ECOPETROL.

Conceptual & Basic Engineering - Magdalena Medio140 Project – Oil Warming, Tisquirama,

Pijiño del Carmen – Crude Evacuation Program, PEC - ECOPETROL.

2011

Magdalena Medio100 Project – Ayacucho Plant – Coveñas - Crude Evacuation Program,

PEC - ECOPETROL.

Magdalena Medio100 Project – Increase storage capacity Coveñas - Crude Evacuation

Program, PEC - ECOPETROL.

Gace Project Stage III – Marine Platform, CHEVRON PETROLEUM CORPORATION.

2010

Conceptual Engineering – Mansilla Pipeline - Tocancipá, ECOPETROL - VIT.

Basic Engineering – Electrical System Optimization, Ayacucho Plant, ECOPETROL - VIT.

Basic Engineering – Refined Products, Ayacucho II Plant, ECOPETROL - VIT.

Basic & Detailed Engineering – New Power System 6.3KV, Vasconia II, ECOPETROL - VIT.

Detailed Engineering Auditing, CONEQUIPOS, Tocancipá, ECOPETROL - VIT.

2009

Basic Engineering for two 120,000 bbl Storage Tanks. – Vasconia – ECOPETROL - VIT

Conceptual & Basic Engineering for new derivation between Pereira and Cartago. Puerto

Salgar Pipeline – Cartago. ECOPETROL - VIT

Conceptual Engineering for new Derivation between Chinchiná and Pereira. Puerto Salgar

Pipeline – Cartago, ECOPETROL - VIT.

Director of Technical overseeing for Detailed Engineering of ECOPETROL’s Terminal in

Tocancipá, ECOPETROL - VIT.

Basic Engineering for Revamping of Seven Control Rooms for ECOPETROL - GCB –

Barrancabermeja Refinery, ECOPETROL.

IGC ANDINA - Colombia Consultants 2004 - 2008

Position: Technical Director

Projects:

2008

Technical, administrative and financial audit for fabrication, construction and assembly of

15000 and 20000 bbl tanks, in storage terminals of Medellín and Bogotá. (CPC - CHEVRON

Petroleum Company).

Duties / Responsibilities:

Director of Technical Overseeing.

Protect the interests of CPC.

Provide direction and follow up the work of land engineers of Technical Overseeing.

Review and approve the detailed designs of the tanks, which are delivered by the

Contractor and give recommendation for approval in accordance with standards and

technical specifications.

Review and approve reports of quality of materials, steel plates, welding, testing, etc.

Review and approve welding procedures.

Review follow-up reports and update construction schedule of the project (both in time

and costs) and issue recommendations.

Review, approve and report to CPC any change in amounts of work and request for APU

for approval of the Company enclosing the justification for the changes to be made.

Report any anomaly on quality of work plan, or amounts of work, to facilities CPC

engineer, and issue appropriate recommendations.

Monitor monthly follow-up meetings for the construction and assembly tasks and other

regular meetings that may be required by CPC.

Review and approve the periodic reports of execution and progress of work.

Review and approve the final liquidation of the contract.

Review and approve the archive of documents (dossier) delivered by the Contractor.

2005 - 2007

Basic & Detailed Engineering - Center of Technical Information Resources. ECOPETROL

(Colombia Oil Company) / OTEPI - Refinery of Barrancabermeja – Colombia. 10,000 M2

Duties / Responsibilities:

General Coordination alongside with the Customer, Architects and other suppliers

Basic and Detailed Engineering

Analysis and Design of Reinforced Concrete and Steel Structures

Design of underground for wastewater, rain waters, concrete trenches and electrical

ducts.

Development and management of technical specifications for construction of civil works.

Development of Quality Plan for the appropriate execution of the Project.

Complete definition of materials along with its amounts and requisitions

2004 – 2005

Structural Pathology for water plants U-800/U-830 / U-850 - ECOPETROL (Colombia Oil

Company) / OTEPI - Refinery of Barrancabermeja – Colombia

Duties / Responsibilities:

Verification of concrete’s behavior. Disintegration, erosion, spalling, cracking, leakage,

etc.

Identification of concrete’s problems. Carbonation / sulfate attack / fluorescence.

Identification of behavior of embedded metal. Corrosion process, dispassivation,

delaminating and other deterioration mechanism.

Verification of Structural Analysis of the concrete equipments of the water plants and

reduction in Structural Capacity

Recommendations and Particular Procedures to carry out a deeper evaluation of the real

conditions of the equipments of concrete

Technical specifications for surface repair, summary of Repair and Overlay Materials for

each structure. Analysis, Strategies and Design

TECHNIP– Colombia (TIPIEL S. A.) 1994 - 2004

Duties / Responsibilities:

Civil/Structural Lead Engineer. General Coordination with other Engineering disciplines.

Basic and detailed engineering: Analysis and Design of Steel Structures for Process Buildings,

Pipe Racks, Open Frame Towers and other structures

Basic and detailed engineering: Analysis and Design of Reinforced Concrete Structures for

Process Buildings, Control Houses, Substations, etc

Analysis and design of structures foundations and equipment foundations. Pumps, compressors,

heavy machinery, heat exchangers and pressure vessels (horizontal and vertical vessels), tall

towers and storage tanks.

Preparation of technical specifications for design and construction of civil works and steel

structures.

Preparation of proposals and budgets.

Site selection for plant development, programs, work strategies and construction sequence.

Technical direction and overseeing to develop the civil work construction and assembly.

Projects:

2004

Air products – 110 MMSCFD Hydrogen Plant - USA

2003

Unleaded Gasoline/Low Sulphur Gas Oil – EPC Project Takreer Abu Dhabi Oil Refining

Company

2002

Train III of Compressors – CPF Cupiagua – BPX Co – Casanare – Colombia

CDU Unit U-150/130 Crude Factor Recovery – ECOPETROL – Barrancabermeja – Colombia

2001

Engineering “Sunshade” Contract - (LTT) - Cusiana Facilities Expansion – BP-Amoco –

Casanare-Colombia

ECOPETROL Paraffins Plant – Chillers – Engineering, Construction and Assembly

Barrancabermeja– Colombia

2000

JASMINE Facilities - Phase I – Basic and Detail Engineering - Purchases Management OMIMEX

of Colombia – Puerto Boyaca

New System for Stack # 2 – Detail Engineering – ECOPETROL -Barrancabermeja

Detailed Engineering: Structural Analysis and Design for Column C-525 – Revamping for

Industrial Plant of Monomeros Colombo-Venezolanos

Technical Supervision of Detailed Engineering for Viscosity Reduction Plant – ECOPETROL –

Cartagena – Colombia

1998 - 1999

Cusiana/Cupiagua Full Field Development – Flow Lines & Wellpads Project - BPX Co.- Casanare

- Colombia

New Pumping Station – ECOPETROL – Cisneros – Antioquia - Colombia

1997

Cusiana Expansion Sales Gas Plant BPX Co. Casanare – Colombia

Modernization for Topping 2000 Unit – ECOPETROL - GCB - Barrancabermeja - Colombia

1996

MERIELECTRICA Power Plant 160 MW – WESTINGHOUSE - Barrancabermeja – Colombia

TERMODORADA Power Plant 51.1MW – La Dorada – Caldas - Colombia

1994 – 1995

Spent Caustic & Sour Water Treatment – ECOPETROL – Cartagena - Colombia

Particleboard Plant TABLEMAC SA – Phase II Santa Rosa de Osos – Antioquia – Colombia

TECHNIP– Colombia (TIPIEL S. A.) 1989 - 1991

Duties / Responsibilities:

Leader Civil / Structural Engineer.

Analysis and Design of Steel structures and reinforced concrete

Analysis and Design of Foundations for static equipments.

Preparation of technical specifications for design and construction of civil works.

Projects:

1990

Modernization for Vapour Recovery Units (VRU) and Ethylene Unit - ECOPETROL –

Barrancabermeja

1989 – 1990

Particleboard Plant TABLEMAC SA – Phase I – TABLEMAC S. A.. – Manizales - Caldas

1989

Pilot Plant for Cellulose Pulp production from fique. Caldono, Cauca – DRI – Caldono –

Cauca

OTHER COLOMBIAN COMPANIES / INDUSTRIAL PROJECTS 1991 - 2003

Duties / Responsibilities:

Basic coordination, management of several EPC Projects and Design Implementation.

Planning definition, including buildings and equipments distribution, services Areas (On site,

Utilities and Off Sites).

Analysis and Design of Steel Structures and reinforced Concrete Structures.

Analysis and Design of Foundations for static and dynamic equipments and heavy machinery.

Tanks foundations (ring wall), Vessels, Pumps, Compressors, basins, mat slabs, etc.

General Design of underground systems

Development and management of Technical Specifications for Construction of Civil Works.

Technical Support and Construction Supervision for design implementation.

Projects:

2002

Experience with ITANSUCA Ltda

Technical and Administrative Supervision. Construction, Assembly and Configuration –

Sectorization System - Trasandino Pipeline – ECOPETROL

2000 – 2003

Experience with MAVC / EXXON MOBIL / TEXACO

Detailed Engineering Tank 14000 Barrels - Storage of Jet Gasoline - Storage Tank Ring walls

Foundation Design - Plant of Aviation Set Operation – Texaco / Exxon Mobil Corp. - “EL

DORADO” International Airport - 2003

Structural Consultancy – Design verification Warehouse - Inactive File - Texas Petroleum

Company, Texaco – Puente Aranda – Bogotá - Colombia - 2001

Detailed Engineering: Analysis and Design of Steel structure for Pipe Rack – Supply Plant -

Exxon / Mobil Corporation Medellin, Antioquia – Colombia - 2000

1995

Experience with JJ PIRAQUIVE & Co.

Basic & Detailed Engineering and Construction and Assembly for “SAN ISIDRO” Foods Industrial

Plant – Chia - Structural Analysis, Design and Construction

1993 – 1994

Experience with GRACE COLOMBIA

Engineering, Construction and Assembly for Biosida Production Plant - Dearborn Line – Bogotá

Engineering and Construction – Treatment Plant for industrial wastewater - Bogotá

1992

Experience with SADE DOMINICANA

Detailed Engineering and development budget for Electro-mechanical assembly. – Bonao – Río

Blanco - Dominican Republic

1991

Experience with ECOPETROL

Detailed Engineering - Production Facilities of Gas – Analysis and Design of Steel structures and

Foundations - Wellpad “ Cerrito 1 “ – Cúcuta - Colombia

Detailed Engineering – Steel Structures and Foundations for Electric Substation – Production

Facilities of Palagua - Puerto Boyacá – Colombia

Detailed Engineering – Steel Structures and Foundations for Electric Substation – Production

Facilities of Toldado - Tolima - Colombia

Detailed Engineering – Gas Compressor Station – Barrancabermeja - Colombia

Supports for pipe line interconnection between stations “76 x 7” and “La Cira - Infantas” - El

Centro –Barrancabermeja – Colombia

1991 – 1992

Experience with TECNICONTROL Ltda.

Production Facilities for Heavy Oil – La Linda, Toroyaco y Uchupayaco Stations - Argosy Energy

International / ECOPETROL - Putumayo - Colombia

Detailed Engineering for Shampoo Industrial Plant. - Norwich Colombiana – Inextra - Funza,

Cundinamarca - Colombia.

Detailed Engineering and Technical Supervision for Construction - Coca Cola Industrial Plant for

Production of Thermo - formed Plastic Pack Comptec - Funza – Cundinamarca – Colombia

1987 -1989

Experience with PCA – PROYECTISTAS CIVILES ASOCIADOS

Structural Analysis and design for several steel structures and reinforced concrete.

o Housing urbanizations

o Housing and Offices Buildings

o Trades Center.

Technical Assurance for Construction