(CONTEC) COMPANY PROFILE

Transcription

1 HAMED AL-GHAMDI ENGINEERING CONSULTANCY COMPANY PROFILE Main Office: P. O. BOX 76729, KHOBAR, KSA, Tel Branch: P. O.Box 11690, Jeddah 21463, KSA, Tel Website: contec.com.sa

2 INTRODUCTION 03 MESSAGE FROM THE PRESIDENT COMPANY DATA CONTACT DETAILS COMMERCIAL CERTIFICATES SERVICES OFFERED 12 ASSESSMENT & REPAIR OF CONCRETE STRUCTURES CATHODIC PROTECTION PLANNING, DESIGN AND PROJECT MANAGEMENT EXPERIENCE 25 LIST OF PROJECTS REPRESENTATIVE PROJECTS IN ASSESSMENT & REPAIR OF CONCRETE STRUCTURES REPRESENTATIVE PROJECTS IN CATHODIC PROTECTION REPRESENTATIVE PROJECTS IN CORROSION STUDIES MANPOWER 47 ORGANIZATION CHART LIST OF KEY PERSONNEL RESUMES OF KEY PERSONNEL HAMED AL-GHAMDI ENG G CONSULTANCY 1

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4 MESSAGE FROM THE PRESIDENT The infrastructure in the coastal areas of the Arabian Gulf region is exposed to one of the most aggressive conditions in the world. As a result, the existing structures show loss of serviceability well before their design service life. The effect is more pronounced in reinforced concrete structures due to corrosion of the reinforcing steel. The existing structures require repair to make them serviceable as well as protection against further deterioration to extend their service lives. New structures require judicious selection of design, materials and construction practice which match with the existing severe exposure conditions. For existing deteriorating structures, various repair techniques are available ranging from do nothing to complete replacement. A professional and logical approach to repair of a structure is to make condition assessment of the structure prior to carrying out repairs. Assessment involves determining the causes of deterioration, mapping the extent of damage, assessing the structural integrity and serviceability and predicting the remaining service life of the structure. It will also provide various options of repair and protection. The assessment will help the facility owner to make important decisions regarding repair by answering questions such as, (i) whether the repair is required, (ii) what will be the life without repair (iii) cost of the repair, (iv) service life after the repair etc. For new construction, the design, materials and construction practices should match the prevailing severe exposure conditions. With the development in concrete technology in the region over the past two decades, it is now possible to design structures virtually for any design service life. It is, therefore, strongly recommended that the corrosion specialists should be involved at the design stage to ensure durability of the structures. HAMED AL-GHAMDI ENG G CONSULTANCY 3

5 Hamed Al-Ghamdi Engineering Consultancy provides planning and design services for buildings and infrastructure, project management, and specialized services in condition assessment, repair design, corrosion protection and cathodic protection of reinforced concrete and steel structures. Our qualified and experienced engineers can provide assistance to you in designing and constructing new buildings and infrastructure and in assessing and protecting your valuable infrastructure against corrosion and provide it a safe and durable life with no major maintenance. Since its formation in 2004, CONTEC is constantly growing and has provided services to major clients like Royal Commission Jubail, Saudi Electric Company (SEC), Saudi Basic Industries Corporation (SABIC) and other private sector clients. We are serving the Royal Commission Jubail as their corrosion studies consultant since 2008 under Contracts 560-T32, 560-T35 and 560-T37 "Corrosion Studies". HAMED AL-GHAMDI ENG G CONSULTANCY 4

6 COMPANY DATA Name (official): Name (commercial): Hamed Al-Ghamdi Engineering Consultancy Concrete Technology Consultancy CR No.: License No.: Type of Firm: Owner: Responsible Executives: Bankers: 1032 issued by Ministry of Commerce, Saudi Arabia Ownership Dr. Hamed Ahmed Al-Ghamdi Dr. Hamed Ahmed Al-Ghamdi, Owner Dr. Syed Ehtesham Hussain, General Manager Saudi British Bank Aqrabiah Branch Al-Khobar Main Office: Al-Borman Building, King Abdulaziz Street P. O. Box 76729, Khobar 31952, K.S.A Tel. (+966) Fax. (+966) Branch Office: P. O. Box Abu Alaa Al Edrisi St., Al-Naeem District Jeddah 23621, K.S.A Tel./Fax. (+966) Website: HAMED AL-GHAMDI ENG G CONSULTANCY 5

7 LOCATION MAPS HEAD OFFICE BRANCH OFFICE HAMED AL-GHAMDI ENG G CONSULTANCY 6

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14 1. ASSESSMENT & REPAIR OF CONCRETE STRUCTURES 2. CATHODIC PROTECTION 3. PLANNING, DESIGN AND PROJECT MANAGEMENT HAMED AL-GHAMDI ENG G CONSULTANCY 13

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16 Condition Evaluation, Service Life Prediction & Structural Assessment Before implementing the repair works to a structure, it is essential to conduct a detailed investigation to evaluate the causes of the deterioration, design appropriate repair scheme, quantify the work for budgeting and to prepare repair scope of work. Detailed investigation also allows assessing the structural integrity and remaining service life of the structure. Our services form a logical approach to the detailed investigation as follows: Preliminary inspection to assess overall condition of the structure Detailed survey involving deterioration mapping, field and laboratory tests, such as corrosion potential mapping, in-situ corrosion rates, chloride profile, alkalinity, resistivity, carbonation, pulse velocity, rebound hammer, compressive strength, cover to reinforcement, petrographic analysis, etc. Service life prediction using reinforcement corrosion modeling. Structural assessment to find residual strength of the structural members and identify any structural hazards. Preparation of a condition evaluation report which will detail the condition of the structure and make recommendations regarding necessary repair work. HAMED AL-GHAMDI ENG G CONSULTANCY 15

17 Repair Design and Durability The main objective of the repair design is to reinstate the lost structural capacity and prolong the service life to the required length of time. Different techniques of structural repairs are available. The best repair system is the one which is durable and cost effective. Commonly used repair schemes include patch repairs, reskinning, partial or complete replacement, strengthening, structural capacity upgrade, electro-chemical removal of chlorides and/or re-passivation and cathodic protection. Our services include: Developing detailed repair and durability procedures including strengthening and structural capacity upgrade (scope of work, bill of quantities, specifications & drawings) Preparing complete repair contract (RFP) packages and cost estimates including scope of work, bill of quantities, specifications and drawings. HAMED AL-GHAMDI ENG G CONSULTANCY 16

18 Supervision of Repair Works Durable and cost-effective repairs can only be achieved under supervision of qualified engineers who are well versed with durability problems and repair of reinforced concrete structures. Supervision by qualified personnel ensures strict adherence to the material specifications, procedures and quality control. We will provide assistance to the clients from the start to the end of a repair project i.e. from selection of prospective bidders to completion of repairs. Our services include: Pre-qualification of prospective bidders Assistance in technical and commercial evaluation of bids Review of designs and technical submittals Supervision of repair works Inspection and commissioning. HAMED AL-GHAMDI ENG G CONSULTANCY 17

19 Materials Evaluation and Failure Analysis Proper selection of materials is essential to ensure concrete durability for new structures as well as for repair of existing structures. Apart from being fit for use, materials should be compatible with the environment to which they are expected to be exposed during the service life. We test and evaluate materials and repair systems for their suitability for the intended exposure conditions. We use independent third party laboratories for standard testing and use in-house expertise for evaluation of test results. Specialized testing can also be developed and carried out by us. We also undertake failure analysis of materials and systems. Review of Designs and Specifications Implementation of corrosion control measures at the design stage itself ensures long term durability of new structures. Although sufficient data is available from laboratory research and field experience, it is seldom applied in the design of new structures due to non-availability of expertise with the design consultants in specialized fields of concrete technology, corrosion, cathodic protection and coatings. A small effort to incorporate corrosion control measures at the design stage goes a long way and in substantially reducing the life cycle cost. Our services include: Review of general construction specifications related to reinforced concrete, coatings and cathodic protection Developing specifications for reinforced concrete, coatings and cathodic protection. Review of contract specifications and drawings for corrosion protection. HAMED AL-GHAMDI ENG G CONSULTANCY 18

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21 Design of CP Systems Pre-Design Surveys We conduct pre-design surveys to be used in the design, including: soil resistivity survey current drain tests complete CP trials. Design of CP Systems Our services include providing complete design packages including scope of work, specifications, drawings and bill of quantities for sacrificial and impressed current systems for all types of reinforced concrete and steel structures including: Existing reinforced concrete structures New reinforced concrete structures Pipelines Internal and bottoms of above ground steel tanks Offshore structures Oil well casings HAMED AL-GHAMDI ENG G CONSULTANCY 20

22 Materials Supply We offer services in materials selection and supply of materials from all standard international and local suppliers, including transformer rectifiers, dc power supplies, sacrificial anodes (magnesium, zinc and aluminum), high silicon iron anodes, mixed metal oxide anodes, reference electrodes, junction boxes, cables and all other CP materials. Installation and Commissioning We offer services for independent installation and commissioning of all types of CP systems for steel and reinforced concrete structures. We also offer supervision services only for the installation works to be carried out by the construction contractor. Our services include: Installation of CP hardware (transformer rectifiers, anodes, reference electrodes, junction boxes, cabling etc.) Quality control during installation Testing and commissioning Provision of operation and maintenance manuals HAMED AL-GHAMDI ENG G CONSULTANCY 21

23 Monitoring Periodic monitoring of the CP systems is important to provide the desired protection against corrosion. The monitoring is generally carried out at time intervals of monthly, six-monthly and annually. Our services include: Periodic monitoring Assessment of malfunctioning systems Rehabilitation and upgrading existing systems. HAMED AL-GHAMDI ENG G CONSULTANCY 22

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25 Planning, Design and Project Management Our services include providing planning, design and complete project management for residential and commercial buildings, infrastructure and industrial projects, including the following: Planning and Design Residential buildings Commercial buildings Site development and infrastructure Roads and bridges Industrial structures Project Management Complete project management services including site supervision HAMED AL-GHAMDI ENG G CONSULTANCY 24

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28 LIST OF PROJECTS CONCRETE ASSESSMENT & REPAIR S. No. Client Contract No. Title Brief Scope of Work Period 1 SWCC, Riyadh Assessment of 12 Concrete Tanks at High Point Riyadh Condition assessment & prepare tender document for repair & protection 2 Royal Commission, Jubail 560-T37 Corrosion Studies 5-year contract for engineering services for corrosion management (condition survey, structural assessment, develop repair techniques, scope of work for repair, prepare tender document for repair contracts) 3 Ahmed Hamad AlGosaibi Assessment of AlGosaibi Condition assessment & prepare tender Co., Khobar Hotel Main Building document for repair 4 Ahmed Hamad AlGosaibi Assessment of AlGosaibi Condition assessment & prepare tender Co., Khobar Hotel RO Plant & Tanks document for repair 5 Ahmed Hamad AlGosaibi Assessment of AlGosaibi Condition assessment & prepare tender Co., Khobar Hotel Laundry Building document for repair 6 SAFCO (SABIC), Jubail Assessment of SAFCO IV Condition assessment, concrete testing Cooling Tower & recommend repair & protection 7 PETROKEMYA (SABIC), Assessment of VCM Plant Condition assessment, testing & Jubail Seawater Concrete Cylinder recommend repair & protection Pipeline 8 HADEED (SABIC), Jubail Assessment of Steel Long Product Concrete & Steel Structures in Meltshop 9 Al-Joaib/Stantec Consulting Engrs. (Main client: Royal Commission, Jubail) 027-T02 Task 7 Eng g Services for GEM & TCCDs 10 SAFCO (SABIC), Jubail Assessment of Warehouse Floor Condition assessment of gantry crane, steel structures and concrete structures in Melt Shop, Caster Shop & Cooling Shop Develop corrosion section of General Eng g Manual and standard details (TCCDs) on corrosion control & cathodic protection Condition & structural assessment of warehouse floor slab to determine additional live load carrying capacity Ongoing Ongoing ( ) Ongoing HAMED AL-GHAMDI ENG G CONSULTANCY 27

29 LIST OF PROJECTS CONCRETE ASSESSMENT & REPAIR (cont d) S. No. Client Contract No. Title Brief Scope of Work Period 11 ATKINS (Main client: Royal Commission, Jubail) 12 SIPCHEM, Jubail (thru' Maeen Eng'g) 13 PETROKEMYA, SABIC, Jubail 027-T01 Task 2 Corrosion Study of Ras Al- Khair Industrial City M SIPCHEM Old CWB Assessment Assessment & CP Trials for Olefins1 Plant Seawater Concrete Cylinder Pipeline 14 HADEED (SABIC), Jubail Consulting Services for Crane Structure Structural Assessment Developing corrosion control guidelines for reinforced concrete structures, pipelines and steel structures for Ras Al- Khair Industrial City (RIC) Condition assessment and repair recommendations for internal and external of seawater cooling water basin Condition assessment of external of Olefins1 Plant seawater concrete cylinder pipeline, recommending repairs and conducting CP trials and provide CP design parameters Structural assessment of gantry crane structure in Caster and Cooling Bays 15 Royal Commission, Jubail 560-T35 Corrosion Studies 3-year contract for engineering services for corrosion management (condition survey, structural assessment, develop repair techniques, scope of work for repair, prepare tender document for repair contracts) 16 Royal Commission, Jubail 560-T32 Corrosion Studies 3-year contract for engineering services for corrosion management (condition survey, structural assessment, develop repair techniques, scope of work for repair, prepare tender document for repair contracts) 17 PETROKEMYA (SABIC), Jubail Assessment of Internal of Olefins1 Plant Seawater Concrete Cylinder Pipeline Condition assessment of internal of Olefins1 Plant seawater concrete cylinder pipeline during shut-down and to recommend repairs HAMED AL-GHAMDI ENG G CONSULTANCY 28

30 LIST OF PROJECTS CATHODIC PROTECTION S. No. Client Contract No. Title Brief Scope of Work Period 1 GAS (SABIC), Yanbu PH-4 Seawater Concrete Structure CP 2 GAS (SABIC), Jubail CP System Testing Services YANSAB (SABIC), Yanbu CP Survey of Pipelines and Tanks STANTEC - Develop Specifications on CP Replace 4 transformer rectifiers for Phase 4 seawater concrete structure and commission the CP system Replace magnesium anodes for buried pipes, test and commission Detailed potential survey for tanks and pipelines in Yansab, adjust TR output, troubleshooting and recommend remedial actions Develop 4 Guideline Specifications for cathodic protection for Royal Commission 5 Royal Commission, Jubail 560-T37 Corrosion Studies 5-year contract for engineering services for corrosion management (monitoring of existing CP systems for tanks, pipelines, building foundations and other structures, troubleshooting and carry out remedial works) 6 SHARQ (SABIC), Jubail Condition Assessment of Sharq PIV & FWM CP System 7 Three Lions CP Factory Co., Dammam (Main client: SEC) 8 RGCK, Khobar (Main client: Royal Commission, Jubail) - Upgrading CP System for Tanks in SEC-SOA Power Plants 42/2014, 45/2014 & 68/2014 CP System Design for Bridge Foundation, TS-6 and FRP Pipe Crossing with Aramco KRT Pipelines Detailed potential survey of SACP system for fire hydrants and recommend remedial actions Provide design of CP system for tanks and commission the CP systems Provide detailed design document and scope of work for 3 contracts, (i) Bridge foundation crossing KRT pipelines, (ii) Rectify shielding to KRT pipes at TS-6 crossing and (iii) Rectify shielding to KRT pipes at FRP pipe crossing as per Saudi Aramco requirements Ongoing Ongoing Ongoing Ongoing Ongoing ( ) HAMED AL-GHAMDI ENG G CONSULTANCY 29

31 LIST OF PROJECTS CATHODIC PROTECTION (cont d) S. No. Client Contract No. Title Brief Scope of Work Period 9 YANSAB (SABIC), Yanbu CP Survey of Pipelines and Tanks 2015 Detailed potential survey for tanks and pipelines in Yansab, adjust TR output, troubleshooting and recommend remedial actions 10 ARRAZI (SABIC), Jubail Monitoring of CP Systems Monitoring and trouble shooting of CP systems for tanks, pipes and seawater concrete structure 11 ARRAZI (SABIC), Jubail Upgrading CP Systems for Tanks 12 HADEED (SABIC), Jubail Upgrading CP Systems for Concrete Structures in FPF Plant 13 BAYRONI (SABIC), Jubail Upgrading CP Systems in Utility, Ammonia and Urea Plants 14 PETROKEMYA (SABIC), Jubail 15 SEGI, Dammam (Main client:sec Dammam) Assessment & CP Trials for Olefins1 Plant Seawater Concrete Cylinder Pipeline AKA-CTC /2011 Supervision of CP System Upgrading Project at Ghazlan Power Plant Design, material supply, install and commission ICCP system for 17 tanks including one-year monitoring Design, material supply, install and commission ICCP system for reinforced concrete structures and seawater prestressed concrete pipelines including one-year monitoring Install insulating flanges for pipes and upgrade existing CP systems for pipes and tank bottoms including inspection & testing,design, material supply, install and commission ICCP system for pipes and tank bottoms Condition assessment of external of Olefins1 Plant seawater concrete cylinder pipeline, recommending repairs and conducting CP trials and provide CP design parameters Supervision of CP System Upgrading project for seawater intake concrete structures at Ghazlan Power Plant including design review, review of submittals, site supervision and commissioning HAMED AL-GHAMDI ENG G CONSULTANCY 30

32 LIST OF PROJECTS CATHODIC PROTECTION (cont d) S. No. Client Contract No. Title Brief Scope of Work Period 16 SATECH, Khobar (Main client:sec Dammam) 17 Dossary Contracting Co./ China Railway Co. (Main client: Royal Commission, Jubail) - Supervision of CP System Upgrading Project at Qurayyah Power Plant Supervision of CP System Upgrading project for seawater intake concrete structures and tanks at Qurayyah Power Plant including design review, review of submittals, site supervision and commissioning - CP of Piles Design, material supply, install and commission SACP system for reinforced concrete piles of industry pipeline corridor pipe racks in Jubail 18 Royal Commission, Jubail 560-T35 Corrosion Studies 5-year contract for engineering services for corrosion management (monitoring of existing CP systems for tanks, pipelines, building foundations and other structures, troubleshooting and carry out remedial works) 19 Royal Commission, Jubail 560-T32 Corrosion Studies 5-year contract for engineering services for corrosion management (monitoring of existing CP systems for tanks, pipelines, building foundations and other structures, troubleshooting and carry out remedial works) HAMED AL-GHAMDI ENG G CONSULTANCY 31

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34 Project # 1: Condition Assessment of reinforced Concrete Cooling Tower Concrete delamination was observed on the external surface of the reinforced concrete cooling tower after a service life of about 10 years. CONTEC was commissioned to study the causes and extent of the concrete deterioration and to provide detailed procedures for repair and protection in the future. The project scope required to assess condition of reinforced concrete cooling tower, 70 m diameter and 50 m high. The cooling tower was used to cool hot seawater for reuse for cooling. It was also required to provide procedures for repair and protection against corrosion and to extend the service of the cooling tower. The condition survey included quantifying concrete affected by reinforcement corrosion, determine compressive strength, cover to reinforcement, in-situ ultrasound testing of concrete, chloride and sulfate contents in concrete and corrosion potential mapping. The survey indicated that the top portions of the cooling tower suffered concrete deterioration due to reinforcement corrosion and salt weathering. Procedures were provided for repairing distressed concrete. It was recommended to apply protective coating on the internal surfaces of the tower to protect reinforcing steel and concrete against corrosion and to install an impressed current cathodic protection system to protect the reinforcing steel on the external surfaces to prolong the service life of the structure. HAMED AL-GHAMDI ENG G CONSULTANCY 33

35 Project # 2: Condition Assessment of Buried Seawater Concrete Cylinder Pipelines The project involved assessing the condition of 27-year old AWWA 303 concrete cylinder pipes carrying seawater, assess risk of corrosion to the pipes and provide recommendations for repair and protection to extend the service life of the pipes. The condition survey included exposing the pipes at representative locations and conducting delamination mapping of the external cement mortar cover, corrosion potential mapping, measuring chloride and sulfate content profiles in concrete and measuring corrosion rate of reinforcing steel. The survey showed that one of the pipes was undergoing corrosion of the helical reinforcing bars and steel cylinder due to ingress of chloride salt into concrete and depassivating the steel. It was recommended to repair the corroded segments of the pipes and install an impressed current cathodic protection system for protection of the pipe against corrosion and to extend the service life of the pipes. Distance along circumference of the pipe (mm) Distance along length of the pipe (mm) HAMED AL-GHAMDI ENG G CONSULTANCY 34

36 Project # 3: Investigation of Cracks in Walls of a Three Story Building Cracks were observed in walls of a 3-story building. The objective of the study included assessing the causes of the cracking and to provide procedures for repairing and arresting them. The scope of work included geometric survey to assess differential settlement of the foundations, mapping of the cracks, making bore logs to measure bearing capacity and settlement characteristics of the soil, exposing foundations for visual inspection, retrieving and testing concrete samples for compressive strength and chloride content, structural assessment and providing repair procedures.the study indicated that there was differential settlement of the foundations and that the observed cracks were located at the joints between the concrete elements and the block-work due to separation between them caused by differential thermal settlement frequent and due to wetting and drying of the block-work caused by spray and fogging by the irrigation water on the walls as well as due to drain water from the toilets due to apparently inefficient waterproofing on the floor. Structural analysis of the building showed that the footings, columns, beams and slabs are structurally safe and the pressure under the footings is less than the safe bearing capacity of the soil. It was recommended to repair the cracks, reinstall the waterproofing system in all the toilets, relocate the landscaping at least 3 meters away from the walls of the buildings and to conduct visual inspection of the building after 3 years. HAMED AL-GHAMDI ENG G CONSULTANCY 35

37 Project # 4: Condition Assessment and Repair Design for Buildings The project scope of work included preparing as-built structural drawings, conducting detailed survey to assess the condition of a reinforced concrete, to provide detailed procedures for repair and protection and to prepare tender document for repair works. The condition survey included quantifying distressed concrete, determine compressive strength, cover to reinforcement, chloride and sulfate contents in concrete and corrosion potential mapping. The survey indicated that some of the columns, beams and slabs were severely affected and were beyond repair. Detailed procedures were provided for rehabilitating distressed columns, beams and slabs by jacketing without removing the affected concrete in order to minimize disturbance to the operations. Tender document was also prepared including scope of work, bill of quantities, drawings, specifications and cost estimate. HAMED AL-GHAMDI ENG G CONSULTANCY 36

38 Project # 5: Prepare Tender Document for Repair & Protection and Supervision of Repair Contracts The project scope included preparing tender documents for repair and protection of various reinforced concrete facilities, including pipe supports in industry pipeline corridor, bridges, culverts, community parks and light pole foundations. The work included preparing scope of work, drawings, bill of quantities, specifications, form of proposal, special conditions, cost estimate and schedule. The work also included technical evaluation of bids, review of technical submittals, design change notices, change orders, inspection and release of hold points and project close-out. HAMED AL-GHAMDI ENG G CONSULTANCY 37

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40 Project # 1: Condition Survey and Performance Assessment of CP Systems of Concrete Structures and Seawater Pipes The existing CP system for the partially reinforced concrete chambers protected the portions of the structures below the groundwater table as the anodes were installed below the water table. It was suspected that the buried portions of the structures above the water table were not receiving protection. CONTEC was commissioned to make a study and prepare detailed design for upgrading the CP systems to protect the entire structure. The project scope included condition assessment, performance evaluation and recommendations for upgrading the existing impressed current CP systems of reinforced concrete structures and 2000 mm diameter buried prestressed concrete seawater pipelines as well as condition assessment of the unprotected concrete structures above grade level. The study included checking the CP systems performance by measuring the potentials using existing permanent reference electrodes located below water table and reference electrodes above water table installed during the study, condition assessment of the concrete structures at and above grade and the buried pipes. It was recommended to install additional CP system to protect reinforcement for concrete at and above ground level and to improve the monitoring of the pipes by installing new monitoring system in order to effectively monitor the prestressing steel to avoid overprotection. HAMED AL-GHAMDI ENG G CONSULTANCY 39

41 Project # 2: Installation & Commissioning of ICCP System for Bottoms of Aboveground Steel Tanks The bottoms of the aboveground steel tanks were not protected cathodically. The client suspected that the ongoing corrosion may lead to metal loss and holes in the tank bottom plates and lead to leakage of the products. CONTEC was assigned the contract to design, install and commission the CP systems for 17 tank bottoms. The project scope included design, material supply, installation, commissioning and monitoring of impressed current CP (ICCP) system to protect tank bottoms of 17 existing aboveground steel tanks. As the tanks were existing, distributed high silicon iron anodes were installed in 6 m deep drilled holes around the tank. The anodes were fed with an oilcooled transformer rectifier. Monitoring system was installed including reference electrodes under the tanks, instrument negative cables and monitoring junction boxes. The system was commissioned simultaneously for all the tanks using GPS controlled current interrupters. The current interrupters were installed at all the tanks and the CP systems were interrupted simultaneously. The CP systems were monitored for one year before handing over to the client. HAMED AL-GHAMDI ENG G CONSULTANCY 40

42 Project # 3: Installation & Commissioning of ICCP System for Reinforced Concrete Seawater Structures & Pipelines The project scope included design, material supply, installation, commissioning and monitoring of impressed current CP (ICCP) system to protect reinforcing steel of seawater handling chambers and prestressed concrete supply and return seawater pipeline in a steel plant. The concrete chambers were protected using mixed metal oxide (MMO) titanium anode mesh and the pipeline was protected using distributed high silicon iron anodes. The systems were powered by oil-cooled transformer rectifiers. Permanent silver-silver chloride reference electrodes were installed to monitor the systems. The CP systems were successfully commissioned. The systems were monitored for one year at quarterly internals and then handed over to the client. HAMED AL-GHAMDI ENG G CONSULTANCY 41

43 Project # 4: Installation & Commissioning of SACP System for Pipelines and Tank Internal The scope of work included material supply, installation and commissioning of sacrificial anode CP (SACP) system to protect gas pipeline at road crossings and internal of tanks. High potential magnesium anodes were installed horizontally at depths corresponding to the invert level of the pipes and hanged inside the tanks. Potentials were measured and the system commissioned. Project # 5: Monitoring of CP Systems for Steel Tanks, Pipeline, Reinforced Concrete Building Foundations As part of the 5-year CP monitoring contract, the existing CP systems for concrete pipeline, bottom of steel tanks, foundations of reinforced concrete buildings and tanks and seawater retaining structures were monitored and maintained. The monitoring included monthly monitoring to check the condition of the transformer rectifiers, sixmonthly monitoring to measure potentials and adjust the systems and system analysis every three years. The scope also includes troubleshooting and rectification of the systems including replacement of anodes, repair of transformer rectifiers and other repairs as required. HAMED AL-GHAMDI ENG G CONSULTANCY 42

44 Project # 6: Preparing Scope of Work and Supervision of CP Installation Contracts CONTEC also carried out supervision of contracts on behalf of clients. The scope of such contracts includes preparing scope of work, answering technical queries raised by bidders during the bidding process, technical evaluation of bids, review of technical submittals, design change notices, change orders, inspection and release of hold points, witnessing commissioning, reviewing commissioning report and other documentation and project closeout. HAMED AL-GHAMDI ENG G CONSULTANCY 43

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46 Project # 1: Corrosion Study for Jubail 2 This study was carried out for Royal Commission and comprised two parts. Part 1 involved characterizing and developing a database on the exposure conditions of Jubail 2. Part 2 involved developing corrosion control guidelines on materials and construction practices to be applied to the future development in Jubail 2. The study included characterizing the exposure conditions in Jubail 2 for foundations and buried structures in terms of groundwater table depth, chloride and sulfate concentration in soil and groundwater, soil resistivity and sulfate reducing bacteria in soil. The field testing covered under this task was carried out by one of the Royal Commission geotechnical contractors/testing laboratory N 47000N 46000N 45000N 44000N 43000N 42000N 41000N 51000E 52000E 53000E 54000E 55000E 56000E 57000E 58000E DEPTH OF GROUNDWATER TABLE FROM FINISHED GROUND LEVEL IN JUBAIL 2 (m) 5.0m 4.0m 3.0m 1.5m 0.0m Based on the study, the soil conditions above the groundwater table were divided into severely corrosive to corrosive and moderately corrosive. The soil condition below the groundwater table was classified as severely corrosive to corrosive for the entire area N 49000N 48000N 47000N Recommendations were provided for corrosion control for concrete structures exposed to different conditions in these two severity zones. The guidelines include recommendations on selection of cement type, water cementitious materials ratio, cementitious materials content, compressive strength, concrete cover to reinforcement, additional protection measures and construction practices N 45000N 44000N 43000N 42000N 41000N 51000E 52000E 53000E 54000E 55000E 56000E 57000E 58000E CHLORIDE ION CONTENT IN GROUNDWATER IN JUBAIL 2 (PERCENT Cl-) HAMED AL-GHAMDI ENG G CONSULTANCY 45

47 Project # 2: Developing Engineering Manual, Standard Details and Specifications The project scope included engineering standards and standard details related to corrosion control and cathodic protection for Royal Commission, Jubail. The documents prepared include (i) corrosion related sections of the general engineering manual (GEM), (ii) general guideline specifications (engineering standards) on cathodic protection and (iii) standard drawings for cathodic protection. Project # 3: Review of Tender Documents for Corrosion Control As part of the Corrosion Studies contract for the Royal Commission, Jubail, CONTEC carries out review of tender documents at 30%, 90% and IFC stages to ensure proper corrosion control measures are included in the design. The documents reviewed include contract specifications, drawings, scope of work, bill of quantities and design basis reports. HAMED AL-GHAMDI ENG G CONSULTANCY 46

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49 ORGANIZATION CHART President Secretary General Manager Administration Manager In-Charge Business Development In-Charge Assessment Concrete Group In-Charge Protection Cathodic Group In-Charge Document Control In-Charge Safety In-Charge Pocurement In-Charge Finance HR In-Charge & Admin. Structural Engineers Civil Engineers Design Engineer CP Engineers Safety Officers Draftmen Techinicians Draftmen CP Techinicians HAMED AL-GHAMDI ENG G CONSULTANCY 48

50 LIST EMPLOYEES S. No. Category No. of Employees 1 Managerial 2 2 Specialists (Concrete Assessment & CP) 2 3 Engineers (civil eng g) 9 4 Architectural Engineers 2 5 Engineers (cathodic protection) 5 6 Draftsmen 2 7 Technicians (civil & CP) 7 8 Administration and Support Staff 8 HAMED AL-GHAMDI ENG G CONSULTANCY 49

51 LIST OF KEY PERSONNEL S. No. Name Position Qualification Area of Specialization 1 Dr. Hamed A. Al-Ghamdi President Ph.D. Project management & Concrete assessment 2 Dr. S. Ehtesham Hussain Gen. Manager Ph.D. Concrete assessment & Cathodic protection 3 Mohammed Azhar Sr. Project Engr. M.S Concrete assessment 4 Larry Pineda Sr. Project Engr. B.S Concrete assessment & structural design 5 Raju Kuttappan Sr. Project Engr. B.E Concrete assessment & structural design 6 Sivaraj Devarajan Sr. Project Engr. B.E Cathodic protection 7 Shibu Salim Hamsa Sr. Project Engr. B.Arch Architectural design & concrete assessment HAMED AL-GHAMDI ENG G CONSULTANCY 50

52 KEY PERSONNEL Dr. Hamed Ahmed Al-Ghamdi Dr. Hamed completed his B.S in civil engineering from King Abdulaziz University, Jeddah in 1981, P.G. Diploma in Buildings Project Management from Heriot-Watt University, Scotland, U.K. in 1991 and Ph. D. in Concrete Durability from Aberdeen University, Scotland, U.K in Dr. Hamed specializes in project management, concrete durability and assessment and repair of concrete structures. He served SAMAREc and Saudi Aramco as Maintenace Engineer and Manager of Housing from 1992 to Since then he has been working as a consultant until 2004 and then as President of Hamed Al-Ghamdi Eng g Consultancy. Dr. Hamed worked on many commercial and residential buildings projects and was involved in preparing feasibility studies, detailed designs, evaluation of tenders, construction supervision and final acceptance. He served as Secretary General of Ready Mix Concrete Council, Jeddah Province from 2008 to 2013 and implemented quality control scheme for the ready mix plants. HAMED AL-GHAMDI ENG G CONSULTANCY 51

53 Dr. Syed Ehtesham Hussain Dr. Ehtesham completed his B.E in civil engineering from Osmania University, Hyderabad, India in 1982, M.E in structural engineering from Indian Institute of Science, Bangalore, India in 1984 and Ph.D. in concrete durability from King Fahd University of Petroleum and Minerals (KFUPM), Dhahran in During his research work at KFUPM, he worked under Prof. Rasheeduzzafar on durability improvement of concrete blended with silica fume, fly ash and blast furnace slag. Dr. Ehtesham specializes in durability, assessment and repair of concrete structures and cathodic protection. He served Royal Commission, Jubail from 1991 to 1998 and was involved in assessment and repair of the Royal Commission facilities and in updating the specifications on concrete and cathodic protection. He also worked for Ali H. Al-Ghamdi Est., Ras Tanura as Manager of Concrete Repair & Cathodic Protection Department and was involved in repair and cathodic protection contracts for Royal Commission, SABIC, KFUPM and Saudi Aramco. He joined Hamed Al-Ghamdi Eng g Consultancy in 2004 and has been serving as General Manager and Corrosion/CP Specialist. Dr. Ehtesham possesses vast experience in assessment, repair and cathodic protection of reinforced concrete structures. He published about 25 technical papers in International journals and conferences on concrete durability and repair. He participated actively in many local symposia by presenting technical papers and teaught short courses on concrete durability conducted by KFUPM. He is a NACE certified Cathodic Protection Technologist (CP3). HAMED AL-GHAMDI ENG G CONSULTANCY 52

54 Engr. Mohammed Azhar Azhar completed his B.E in civil engineering from Osmania University, Hyderabad, India in 2004, M.S in structural engineering from King Fahd University of Petroleum and Minerals, Dhahran in Azhar specializes in concrete durability, assessment and repair of concrete structures. He has been working with CONTEC since 2007 as Incharge of the Royal Commission projects 560-T32, 560- T35 and 560-T37 Corrosion Studies. Azhar developed vast experience in condition assessment of bridges, culverts, concrete pipeline, buildings, ports/jetties and other concrete structures. He is proficient in developing repair strategies for critical reinforced concrete structures as well as in project management related to concrete repair and cathodic protection projects. He was also involved in technical evaluation of bids on concrete repair contracts. Engr. Larry Pineda Larry completed his B.S in civil engineering from Columban College, Olongapo City, Philippines in 1994, M.S in structural engineering from Pamantasan ng Lungsod ng Maynila lntramuros, Manila in Larry has been working with CONTEC since 2013 as Lead Project Engineer for the Royal Commission projects 560-T32, 560-T35 and 560-T37 Corrosion Studies. Prior to this, Larry worked with Zuhair Fayez Partnership from 2010 to 2013 as Site Structural Engineer and QA/QC Consultant. Larry has vast experience in project management, structural design, planning, quality control and assessment and repair of concrete structures. HAMED AL-GHAMDI ENG G CONSULTANCY 53

55 Engr. Raju Kuttappan Raju completed his bachelor degree in civil engineering from India in He has been working with CONTEC since 2009 as Lead Project Engineer. Prior to this, Raju worked in Dubai as Resident Engineer for BHNS International Engineering Consultants, Associated Consulting Engineers and other consultants since 1993, where he was involved in structural design and project management of major residential and commercial buildings. Raju specializes in structural design and structural assessment of reinforced concrete structures. His experience also includes condition assessment, repair design and structural assessment of reinforced concrete facilities. Engr. Sivaraj Devarajan Sivaraj completed B.E in mechanical engineering from Madras University, Chennai, India in He has been working with CONTEC since May 2011 as Lead Cathodic Protection (CP) Engineer. Sivaraj earlier worked Corrosion Technology Services (formerly CORRPRO) in India as CP Engineer and was involved in surveys, design, installation and commissioning of CP systems for various structures including pipelines. Sivaraj possesses vast experience in design, installation, commissioning, troubleshooting and monitoring of CP systems for tank bottoms, tank internals, pipelines and reinforced concrete structures. In CONTEC, his responsibilities include preparing design and documentation (survey reports, commissioning reports, ITP and O & M manuals), quality control, commissioning and training. HAMED AL-GHAMDI ENG G CONSULTANCY 54

56 Engr. Shibu Salim Hamsa Shibu completed his bachelor degree in architectural engineering from India in He worked with CONTEC from 2004 to 2012 and joined back in Earlier, he worked with Dr. Hamed Al-Ghamdi from 1998 to Shibu s experience includes architectural design and project management of villas, shopping malls, recreation centers, residential and commercial buildings. Shibu specializes in developing basic design ideas, presentation drawings, perspectives and control detail drawings. He has completed several major projects in Saudi Arabia and India. He also possesses valued experience in project management of commercial and residential projects. HAMED AL-GHAMDI ENG G CONSULTANCY 55

57 A SPECIALIZED COMPANY IN ASSESSMENT REPAIR & CATHODIC PROTECTION OF REINFORCED CONCRETE & STEEL STRUCTURES