Appendix D Scope of Work Pipeline

12” GAS PIPELINE AKRI – KWALE FOR AKRI GAS RECOVERY PROJECT SCOPE OF WORK

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EDM Prepared by

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Project name

Company logo and business name

Contractor Approval

Company Approval

Company identification

3214.10.GGPD.10909

12” GAS PIPELINE AKRI – KWALE FOR AKRI GAS RECOVERY PROJECT Contractor logo and business name Vendor logo and business name Facility Name 12” AKRI – KWALE GAS PIPELINE

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Plant Area

Supersedes N. Superseded by N. Plant Unit

Document Title

Scope of Work

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REVISION RECORD

0 Rev.

May, 2014 Date

Issued for Review Reason for Revision

First Issue Short Description of Changes

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CONTENTS 1

2

3

4

INTRODUCTION 1.1

Pipeline Component

5

1.2

Definitions and Abbreviations

7

1.3

Route Overview

9

1.4

Pipeline Route Conditions

9

1.5

Environmental Data

9

1.6

Battery Limits

10

1.7

Pipeline Design Parameters

10

DESCRIPTION OF THE WORK 2.1

Engineering

2.2

Construction Hydrostatic Test, Pre-Commissioning, Commissioning

12

and start-up

12

2.3

Particular Requirements of the Work

14

2.4

Parties Involved in the Project

16

ENGINEERING 3.1

Introduction

17

3.2

Basic Design Endorsement

17

3.3

General Engineering Requirements

18

3.4

Specific Engineering Requirements

19

3.5

Final Documentation

21

3.6

Drawings and Documentation’s

21

3.7

Engineering Documents Approval

22

3.8

Computerised Maintenance Systems (CMMS)Data Documentation........24

CONSTRUCTION WORK 4.1

General

25

4.2

Construction Management

26

4.3

Safety

26

4.4

Labour

26

4.5

Tools and Consumables

26

4.6

Mobilisation

27

4.7

Transport of Pipes and Materials from Port of Entry to Storage/Marshalling Yard 27

4.8

Transport of Pipes and Materials to Work Site

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4.9

Construction Camps

27

4.10

Camp and Field Office Accommodation for COMPANY Personnel

27

4.11

Construction Work

28

4.12

Detailed Work Description

28

STRUCTURAL WORKS 5.1

6

Rev. index.

Trap support design

37

SUPPLY 6.1

COMPANY Supplied Items

40

6.2

CONTRACTOR Supplied Items

40

6.3

Spare Philosophy for Construction

42

STANDARD 7.1 7.2

COMPANY Supplied Items CONTRACTOR Supplied Items

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INTRODUCTION

COMPANY intends to develop and install a new Gas Pipeline of about 15 Km section of NPS 12 Pipeline conveying Gas from Akri Flowstation to Kwale Gas Plant. This specification defines the technical requirements for the detailed engineering, procurement, construction, installation, testing and precommissioning of the Gas Pipeline from Akri Flowstation to Kwale Gas Plant (NPS 12). A fibre optic cable (FOC), (if applicable), shall be laid in the same trench with the Gas Pipeline. The FOC shall serve three main purposes:  Pipeline surveilance (intrusion detection)  Telecommunication  Process data retrieval The Pipeline shall be realised complete with all necessary provisions except Scraper Traps, etc. CONTRACTOR will be responsible for the supply of the 12” line pipes and all other materials required to complete the pipeline system. CONTRACTOR will be responsible for tie-in (with all required materials) of the new 12” Akri Gas Pipeline to both ends of the existing 24” River Niger Pipeline crossing. CONTRACTOR will be responsible for the supply and installation of a new Slug Catcher and the interconnecting piping, which shall be connected to the existing MP Header in Kwale Gas Plant. The Sludge Catcher shall be installed in a new location to be acquired by Company. CONTRACTOR should note that all items/works included in the various Drawings that are not captured in the Scope of Work shall be his responsibility. The route, of the pipeline shall be the same with the existing Right of Way of the 10’’ Kwale – Akri Oil Pipeline. All permits and Licences regarding Right of Way shall be provided by the COMPANY prior to mobilisation and during the execution of the works. The CONTRACTOR will be responsible for all aspects of the work, starting from the documents provided for in these specifications, the development of all the Engineering required to complete the works and the procurement of all required fittings and other materials, including construction and installation on site, testing and precommissioning. This document therefore defines the Basic requirements for the realisation of the Pipeline System. Where this specification conflicts with its associated specifications and/or the codes, standards and associated drawings listed in any part of this document, the CONTRACTOR shall bring the matter to COMPANY’S attention for resolution and approval in writing. In all cases, the most stringent requirements shall apply. Compliance of the CONTRACTOR with the provisions of this specification does not relieve him of his responsibility to properly install the pipeline, equipment and accessories in order to meet the specified service conditions and Nigerian codes governing design, fabrication and health and safety. The COMPANY reserves the right to supply the detailed specifications for project material procurement with which CONTRACTOR must comply.

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In the following paragraphs, the term “PIPELINE SYSTEM” refers to the 12” Gas Pipeline AND the Fibre Optic Cable (FOC), including all pipeline components required to fulfill the objectives of this project. Within this context, CONTRACTOR shall perform all activities including all detailed design engineering, procurement and supply of materials including line pipes, fabrication, supply, transport, construction, testing and pre-commissioning activities required to achieve the successful completion of the Work. The Pipeline shall be realised and connected without interrupting services at Akri Flowstation and Kwale Gas Plant. At Akri all new connection lines, shall be designed and constructed by the CONTRACTOR . Detail engineering, procurement, construction and testing are included in the CONTRACTOR scope of work. At Kwale, all new connection lines, Slug Catcher and its accessories shall be placed on a foundation to be designed and constructed by the CONTRACTOR. Detail engineering, procurement, construction and testing works are included in the CONTRACTOR scope of work. On this pipeline section all construction activities, concrete weighing, cable duct laying and hydraulic testing to be provided by the CONTRACTOR shall be in accordance with specification as will be provided by the contractor and approved by company or in accordance with any other specification as may be supplied by the company. Cable duct shall be waterproofed, closed and able to withstand a 10 meters head of water. The description of the Work included in this Scope of Work is not an exhaustive detailed statement of all CONTRACTOR obligations under this Contract. This Scope of Work shall be read in conjunction with other project and engineering documents, general and discipline specifications, project drawings and all other documents included in the Contract. The detailed engineering shall be based on the Basic Design Documents enclosed in the Contract. Thus, for the realisation of the Pipeline system Akri -Kwale, the following activities shall be carried out as a minimum.       

1.1

Project Management Detailed Engineering Procurement Construction, Installation and ROW Restoration Cathodic Protection Testing and Precommissioning As Built File Pipeline Component The main components of the NPS 12 Gas Pipeline System specific to the Pipeline Scopes of Work are: 1) 2) 3) 4) 5)

15 km of NPS 12 Pipeline, 3 km of existing NPS 24; Foundation; Cathodic Protection (CP) System; Fibre Optic Intrusion & Leakage Detection System Slug Catcher

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The Battery Limits and connecting points are identified accordingly and indicated in the Basic Design Documents.

PIPELINE SUMMARY 12” PIPELINE Service Pipeline Length Routing Configuration

Pipe Size Pipe Material Pipe Wall Thickness Pipe Coating Coating of Field Joints Pipeline Design Life Piping Code

Gas 18 Km On existing Right of Way of 10’’ Kwale – Akri Pipeline Buried. No bunding Normal Areas: min 1.00 m (T.O.P) Agricultural Areas: min 1.20 m (T.O.P) Residential Areas: min 1.20 m (T.O.P) Swamp and Mangrove Areas: min 1.00 m (T.O.P) ND 12’’ API 5L X 65 – SMLS 11.1mm/12.7 as specified in 3214.10.BGRA.16519 HDPE three layers Heat shrinkable sleeves (HSS) Thirty (30) years

- Cross-country pipeline

-

ASME B 31.8 07486.PLI.MEC.SPC Design Criteria For Buried Pipeline.

-

ASME B 31.8 ASME B 31.3

- Akri and Kwale

1.2 1.2.1

Definitions and Abbreviations Definitions COMPANY

Is NAOC who wishes to realise the NPS 12 new Pipeline from Akri - Kwale

COMPANY Representative

means any authority or person appointed in writing by COMPANY to witness the manufacturing, fabrication quality control and inspection of materials and equipment to be used for the project.

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Engineer

Is the party which carries out all or part of the design, as specified by COMPANY.

CONTRACTOR

Is the party which carries out part of the design, procurement, construction activities, manufactures and/or supplies materials, equipment and services to perform the duties as specified by the COMPANY. The term “CONTRACTOR” shall also apply to the construction Sub COMPANY selected by COMPANY for the execution of part of the Work.

CONTRACT

The entire set of documents enclosed in the volumes making up the EPC documentation.

INSPECTOR

The authorised person or agent of the COMPANY assigned to perform inspections.

VENDOR

The COMPANY manufacturing or supplying a particular product.

SUPPLIER

The COMPANY distributing or selling a product.

SPECIFICATION

A portion or section of the Tender.

SUBCONTRACTOR

The COMPANY retained by the CONTRACTOR to perform specific portions of the Work.

COMPANY SPECIFICATIONSGuidelines for design and/or realisation generally based on a clarifying international standard. WORK

The complete scope of the work to be performed as described in this Tender.

WORK SITE

The site or location where the work is to be performed, including rights-of-way, offices and shops.

FACILITY

All or any part of the pipeline and associated equipment.

CONSTRUCTION WORKS

All design and construction activities of pipeline and related facilities within the Contractor scope of work.

Filename

The name assigned to each file; it must be in accordance to the requirements of windows system dimensions.

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Company Identification

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1.2.2

1.3

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Shall

Is to be understood as mandatory in relation to the requirements of these specifications.

Should

Indicate a recommendation.

Owners

Company or appointed agent for the service or building; landowner or respective tenant of the land or property

Construction Drawings

The applicable Typical, Detail, or Alignment Sheet drawings as defined in the Contract

Construction Specifications

The applicable specification as defined in the Contract.

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Abbreviations CP DF dmsl FOC KP LLWS msl MAOP NPS ND ID OD PE PTS RoW SMYS STS T/R WT NDT FS SAP

Cathodic Protection Design Factor dimensionless Fibre Optic Cable Kilometre Point Lowest Level Water Spring mean sea level Maximum Allowable Operating Pressure Nominal Pipe Size Nominal Diameter Internal Diameter Outside Diameter Polyethylene Pipe Tracking System Right of Way Specified Minimum Yield Strength Scraper Trap Station Transformer/Rectifier Line Pipe Wall Thickness Non Destructive Test Flow Station Systems Application Product in Data Processing

PM OEM

Prevention Maintenance Original Equipment Manufacturer

Route Overview The NPS 12 is located in both Imo and Delta States in Nigeria. The starting point is located at Akri flowstation in Imo State and terminates at Kwale Gas Plant in Delta State. The proposed 12” Gas Pipeline from Akri to Kwale follows the existing right-of-way (ROW) of 10’’ Kwale – Akri Oil Pipeline. Contractor shall be responsible to produce the Details of pipeline route at his charge.

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Pipeline Route Conditions The pipeline route is covered by dense tropical vegetation intersected by several river creeks and swamp areas. The major part of the route is located in mangrove swamp area which s influenced by tide variation. CONTRACTOR shall investigate the site to clearly understand the conditions which may affect the construction activities during the performance of the Work Contractor shall be responsible to produce the Details of pipeline route at his charge.

1.5

Environmental Data Location Country : State : Altitude :

Nigeria Imo & Delta States sea level

Akri flow station and Kwale Gas Plant are located in NAOC’s OML 60 in the Land Area of the Niger delta Climate Tropical climate, marine-salty environment (Nigeria River Swamp Area). Air Absolute minimum temperature : 16°C Absolute maximum temperature : 36°C Average ground temperature : 25°C Design temperature Dry bulb temperature : 34°C Wet bulb temperature : 28°C Relative humidity : 90 to 95% Maximum humidity : 99% Design relative humidity : 90% Fine sand presence in atmosphere during 2 months “Armatan” period.

Rainfall For 60 minutes For 30 minutes For 15 minutes Heavy rain

: 92 mm/h : 140 mm/h : 160 mm/h : storm presence

Sunshine 10/12 hours/day over 12 months. Maximum is June. Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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Wind The highest mean wind velocity at 10 m above ground level is 75 Km/h. Lightening High concentration of direct lightening phenomena during seasonal storms. 1.6

Battery Limits The battery limits of the NPS 12 new Gas Pipeline design is defined in P&ID Nos 3210.10.BPFM.XXXXX. Contractor to note that the FOC shall be ran along the entire length of the pipeline, from Akri to Kwale, and terminates appropriately. The FOC shall contain 12 singlemode optical fibers (standard cable length: 3000 m per cable Drum), generally to comply with suitable ITU-T Recommendations. Contractor shall also terminate the fibre optic cable (FOC) in COMPANY’s control equipment located at both ends (Akri and Kwale). Consequently, Contractor shall note the following: 

Akri – Kwale FOC Installation: Contractor shall terminate 6 cores of the FOC at Telecommunications (TLC) control room at both ends (i.e. at Akri and Kwale, respectively), while the remaining cores shall be terminated in the intrusion detection control/monitoring equipment and the plant’s main control system in the Control room, as applicable. *Contractor to verify the termination methodology that will realise the main objectives of the FOC as outlined in Section 1.0.

Consequently, Contractor shall liaise with COMPANY’s FOC end-user departments (e.g. ICT, Telecommunications, GIS, etc.) for advice, especially as regards the appropriate interface equipment(s) that may be required, so as to ensure that termination of the FOC is done properly and effectively to achieve the main objectives highlighted in Section 1.0 above. *NOTE: that all interface equipment(s) required by the user-departments for proper termination of the FOC are also within Contractor’s scope of work. Pipeline Contractor to note, therefore, that a minimum slack (excess length) of 100m of fibre optic cable shall be allowed at the cable ends in both flowstations, as much as is required for proper termination at the receiving control equipment(s). See Doc. No: 3214.10.BISP.26807. 1.7 1.7.1

Pipeline Design Parameters Pipeline System Design The primary code applicable to the pipeline system is ASME B31.8, ASME B31.3,

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API 1104, and any other code which its application may improve the quality of the pipeline project. Other codes and standards listed on Tender Documents shall also be adhered to. The Pipeline shall be buried along its entire length except for portions located at launcher and line valve. At these areas, the below and above ground transition shall be denoted on the P&IDs by the abbreviations UG and AG respectively. The pipeline shall be designed to be inspected by means of various kinds of pig. 1.7.2

Pipeline Materials 12” Gas Pipeline Akri-Kwale Steel Line Pipe Specification

: API 5L Gr. X65 SMLS

Pipeline Diameter and Wall Thickness

1.7.3

Dimensional (Inside) Diameter

: 304.9mm (NPS 12)

WT - ASME B31.8 DF 0.72/0.6 Coating

:11.1mm/12.7mm

External pipe Coating

:3 Layer Polyethylene (2.9mm)

Internal pipe Coating

: not required

Pipeline Design Pressure 12” Gas Pipeline Akri - Kwale Design pressure Flange Rating

1.7.4

: 120 barg : 900 lb

Hydrostatic Test Hydrostatic test requirements are defined in Technical Specification for Pipeline Cleaning, Gauging and Hydrotesting Addendum to API Spect 5L No. 3214.10.BTST.16535

1.7.5

De-watering De-watering requirements are defined specification No. 3214.10.BTST.16576.

1.7.6

in

the

Pipeline

Start-up

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Pre-Commissioning

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Start-up requirements 3214.10.BTST.16576.

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specification

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No.

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2

DESCRIPTION OF THE WORK

2.1

Engineering

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CONTRACTOR shall carry out the detailed engineering Work including review and endorsement of the Basic Engineering, and where applicable or missing information shall ensure that he embark on some survey to locate or provide such missing information which he shall submit to the company for review and approval before apllication, complementary site survey required, detailed design, engineering for procurement, engineering for construction, pre-commissioning, commissioning and start-up. CONTRACTOR shall ensure the technical reviews and approval by COMPANY. CONTRACTOR shall manage and perform the engineering activities and report to COMPANY as per the engineering to be developed in accordance with the requirements of the Contract. CONTRACTOR shall prepare and submit all engineering documentation to COMPANY in accordance with the Contract requirements. CONTRACTOR shall provide the final documentation for the “as built” of the pipeline and associated facilities consisting of all documents, drawings, calculations, test report, certificate, procedures for pipeline operation, government filings, and all other documentation required under the Contract. 2.2

Construction, Hydrostatic Test, Pre-Commissioning, Commissioning and startup CONTRACTOR shall perform the construction activities in accordance with detail design engineering documents developed by CONTRACTOR and approved by COMPANY CONTRACTOR shall safely connect 12” Line Pipe to the existing 24” Line Pipe at both ends of River Niger (HDD across the River Niger). CONTRACTOR shall take over the Site “as is”; the Site being “The RoW allocated by the COMPANY” and provide areas for material storage, construction camps, offices and access to the Site locations. CONTRACTOR shall appoint Safety and Community Relation Managers prior to start of any work in the Site. CONTRACTOR shall provide appropriate implementation of Health, Safety, Security and Environment rules at Site. CONTRACTOR shall make available adequate first aid materials at Work Site throughout the construction period. CONTRACTOR shall construct, pre-commission, commissioning and start-up the Work including unloading, storing, transport, handling, stringing, prefabrication, installation and erection as required.

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CONTRACTOR shall carry out all work and services and furnish all equipment materials and tools required to grading, excavating, hauling, handling, welding, lowering-in, hydrostatic testing works, etc. CONTRACTOR shall carry out all hot-tapping activities (if applicable) and relevant services and furnish all equipment, materials and tools required. CONTRACTOR shall also provide procedure and provision ensure rapid and safe evacuation under emergency. CONTRACTOR shall provide construction workforces. CONTRACTOR shall ensure that the construction Work is carried out in accordance with drawings and specifications approved by COMPANY for Construction. CONTRACTOR shall supply, operate and maintain Construction Equipment as required for the execution of the Work. CONTRACTOR shall provide material, consumable and facilities to support Manufacturers/Suppliers specialists during construction, pre-commissioning, commissioning and start-up. CONTRACTOR shall manage surplus materials and waste disposal in accordance with the rules and regulations in force in the Republic of Nigeria, in particular with the prescribed environmental mitigation measures. CONTRACTOR shall provide the security (bearing in mind, the present security suitation in the Niger Delta) and safety services within the Site. CONTRACTOR shall provide telecommunications, power supply and all other utilities required at Site. CONTRACTOR shall manage coordinate and supervise the Work assigned to Sub CONTRACTOR(s) to ensure the Work is performed within the required schedule, and the quality requirements of the Contract. CONTRACTOR shall provide the hydrostatic testing of pipeline, including pre-testing, pre and post hydrostatic test activities, including filling, cleaning, gauging and calliper pigging. CONTRACTOR shall provide the pre-commissioning activities including: i) ii) iii) iv) v) vi)

De-watering (and safe disposal of test water); CP testing and Commissioning; Inspecting, testing and pre-calibrating instrumentation, including instrumentation; Checking operation of all protection systems; Purging and leaving pipeline systems under positive pressure; Disposing of test water and all excess and waste fluids, materials and equipment as specified in the Contract.

CONTRACTOR shall undertake full responsibility for the commissioning and start-up of the complete pipeline system of which the 12” Akri - Kwale Gas Pipeline and all its facilities (Slug Catcher and Valves e.t.c) are integral parts. Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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At least 1 month prior to the programmed date for commissioning and start-up, CONTRACTOR shall submit for the COMPANY approval a detailed procedure and program. Upon completion of the commissioning and start-up in accordance with the program and procedures, to the satisfaction of the COMPANY, the taking over of the pipeline system by the COMPANY shall not relieve the CONTRACTOR in any way from his obligations to carry out further tests as may be required on the pipeline system to demonstrate and fulfil his overall responsibility for performance of the system, regarding the Gas Pipeline 12” Akri – Kwale only CONTRACTOR shall provide and operate an electronic material traceability with qualified operator personnel to continuously store and report upon, pipeline data progress. CONTRACTOR shall provide qualified surveyors, equipment and helpers for all topographical survey activities. The CONTRACTOR shall carry out the topographical survey activities, dimensional measurement and checks before and during construction and survey all data required for the preparation of the “as built “documents and for implementation of pipe tracking system. Contractor shall be responsible for the Restoration of the Pipeline Right of way to the original condition prior to the commencement of the construction activities. 2.3 2.3.1

Particular Requirements of the Work Additional surveys. For the execution of the detailed work, CONTRACTOR shall carry out surveys to confirm existing survey data and/to obtain additional or new data. Such surveys are included in CONTRACTOR’s Scope of Work

2.3.2

Interface and Coordination. Interface with other parties are outlined in Section 2.4 of this document.

2.3.3

Permits CONTRACTOR shall consider that there may be some existing pipeline and relevant facilities, along the Pipeline ROW, which may be in operation and as such, all work in these areas shall require permits from the relevant operating COMPANY. This requirement is also applicable for all the crossings of existing pipeline, flow line, cables and other above ground and underground structures.

2.3.4

Tie-ins at Interface Point. CONTRACTOR shall perform all hot-tapping activities; all flange connections, welds and test at interface point Battery Limits. Generally, CONTRACTOR shall carry out all In-plant Piping/Tie-in as detailed in the P&IDs.

2.3.5

Pipeline Work Constraints The constraints which may affect the project activities are listed here below.

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CONTRACTOR shall take these into consideration and shall take the necessary provisions in its organisation and planning for the performance of the work. i) ii) iii) iv) v) vi) vii) 2.3.6

Environmental Constraints; Archaeological Constraints; Terrain / Geo-hazard Constraints; Access Constraints; Third-party Constraints; Social Constraints; Security constraints.

Working in the Vicinity of Existing Pipelines CONTRACTOR shall place particular emphasis on aspects of the Work relating to the safety of working in proximity to existing pipelines and services. The Work shall be carried out under a specific Permit-to-Work system. CONTRACTOR shall prepare and submit, for COMPANY approval, procedures and method statements which shall specifically address this aspect. Notification is required for entry into all Plant areas.

2.3.7

Material Traceability/Pipe Tracking System. CONTRACTOR shall prepare and issue, for COMPANY approval, a procedure to operate electronic pipe tracking system together with import, storage, export and report upon, pipeline data. COMPANY shall approve the structure of the data file in order to permit the import/export of data between CONTRACTOR and COMPANY.

2.3.8

Extra Works If deemed necessary, and when required by the COMPANY in writing, the CONTRACTOR shall provide all the labour and materials necassary for any extra works required by the COMPANY. Payment will be in accordance with the CONTRACTOR’ s Price List.

2.3.9

Access by COMPANY Representative The CONTRACTOR shall grant the COMPANY’ s representative free access to any location where works described in these specifications are being executed.

2.3.10.

Equipment Nameplates CONTRACTOR shall provide nameplates for all permanent equipment items installed during the course of works. All texts shall be submitted to the COMPANY for the approval prior the manufacture. All instruments, manual valves and other permanent items shall be provided with Stainless Steel (SS) tag plates by CONTRACTOR as approved by COMPANY as part of this Scope of Work.

2.3.11

Material Identification CONTRACTOR shall compile material list for all permanent material (pipes, valves and fittings, etc.) to ensure traceability and material identification. The list shall contain, as a minimun, the following details for each item of permanent material:

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Stamped Pipe/Fitting number Cast/Heat number Painted Serial number Individual pipe Lenghts Valve Manufactures

2.4

Parties Involved in the Project

2.4.1

Parties Involved in the Work The Parties outlined here below, shall be involved in the implementation of the project: 1) 2) 3) 4)

COMPANY CONTRACTOR Sub Contractor (s) including their own Sub Contractor(s) Manufacturers (s) including their own Sub Contractor(s) Suppliers (as and when required) 5) Welding Inspectors, anticorrosion Coating Inspectors, Concrete coating Inspectors, Third Party agencies appointed by CONTRACTOR and approved by COMPANY to carry out certain inspection and testing as described in the Tender Documents. 2.4.2

Parties Interfacing with the Work Responsibility for liaison with third parties for the purpose of obtaining permits shall lie with CONTRACTOR. COMPANY shall use its best endeavours to help where possible. Authority

Feature to be crossed

i) ii)

Harbour Area Rivers and Navigable Waterways

iii) iv) v) vi) vii)

2.4.3

Nigeria Port Authority Ministry of Water Resources in Imo/Delta State and Port Authority Federal Ministry of Work & Housing Chief Engineer in Imo/Delta State Ministry of Work in the Imo/Delta State N.I.T.E.L. in Imo/Delta State N.E.P.A. Other Companies viii) NAOC operating staff supervisors

Federal Trunk Roads State Roads Telephone Cable Electricity Lines Pipeline or Other Utilities Akri Flow station and Kwale Gas Plant facilities

Other CONTRACTOR at Site CONTRACTOR shall acquire full knowledge of other CONTRACTOR at Site directly or indirectly involved in the project and at this effect, shall make all the necessary provisions in its organisation and planning for the performance of the work

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3

ENGINEERING

3.1

Introduction

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Engineering shall include the necessary FEED engineering including design optimisation and finalisation, detailed engineering including procurement, supply, construction, pre-commissioning, commissioning and start-up and any other engineering work that CONTRACTOR may require to comply with the Scope of Work. CONTRACTOR shall develop the engineering on the basis of the Basic Design Document included in the Contract. The detailed engineering shall include but not limited to, the following :      

The NPS 12 new Gas Pipeline, Cathodic protection system, NPS 12 new Gas Pipeline connections NPS 12 Gas Pipeline Slug Catcher Any other work considered necessary by the contractor and approved by company toward the realization of the oil pipeline project. The detailed engineering also involves the preparation/development and review of Technical Specification and Data Sheets for Pipeline Security System, particularly the Fibre Optic Intrusion & Leakage Monitoring/Detection System.

COMPANY reserves the right to issue to CONTRACTOR additional documentation for information or clarification purposes, at any time. Such documentation shall not give rise to any claim whatsoever if the content of such documents does not alter the CONTRACTOR Scope of Work or if the alteration is of such a nature that is deemed necessary for the safe operation of the pipeline. 3.2

Basic Design Endorsement CONTRACTOR recognises that the Basic Design Documents do not define the work in detail but are fit and sufficient for the purpose they are intended to define the basic principles and requirements for the reliable performance of the Work. Before Contract award, CONTRACTOR shall review and control all Basic Design documents and seek for possible clarification or missing information. The Endorsement of Basic Design document activity shall be carried out discipline by discipline and shall include technical meeting with COMPANY, as required. The endorsement activity shall be substantiated by the issue of the Endorsement Report, by CONTRACTOR to COMPANY for approval. The review and endorsement activity shall be considered as an integral part of CONTRACTOR Scope of Work before Contract award. As a consequence, adaptation or modification shall require COMPANY approval. Any other work in any way resulting from such endorsement or otherwise connected there with, shall be considered to be part of CONTRACTOR’s Scope of Work. Topographical survey data provided by COMPANY are integral part of Basic Design documents and as such endorsed by CONTRACTOR. Therefore any claims from

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CONTRACTOR arising from the lack of knowledge in respect of topographical survey affecting the work shall not be accepted by COMPANY under any circumstance. Additional surveys carried out by CONTRACTOR shall be at his own expense as a part of Scope of Work, subject to the constraint of security and obtaining of relevant permits.The CONTRACTOR shall carry out a field survey and stake out the route of the pipeline on the ground. Pipeline alignment stakes shall be placed at close enough intervals along the pipeline centreline and at every point of intersection of two tangents, such that the alignment of the pipeline is maintained throughout. In addition, reference offset markers shall be placed at a distance not exceeding 30 m from the survey centreline at all stakes. The location, distance and deflection of the offset markers from the pipeline centreline shall be recorded to permit the re-establishing of the pipeline stakes. The CONTRACTOR shall survey the route linking up the B.M’s of the line to the existing trigonometric points. Topographic and detailed surveys shall be carried out at the following locations:   

main roads and major rivers canals and existing pipeline crossings particular areas requiring special design activities.

All topographic works shall be in accordance with “Specification for topographical survey works” (doc. 3214.10.BADG.35888).

3.3

General Engineering Requirements CONTRACTOR shall prepare all necessary engineering documentation required for the Work, as specified in the Contract documents. CONTRACTOR shall perform the detailed engineering in accordance with its own engineering procedures amended to suit the requirements of Project Coordination Procedures. CONTRACTOR’s engineering activities shall generally include but not limited to the following: i) ii) iii) iv) v) vi) vii) viii) ix)

Prepare drawing list and document index Implement document control of CONTRACTOR, Sub Contractor and Manufacturers/Suppliers drawings and documents using a computer data base in accordance with COMPANY requirements Prepare QA/QC procedures Review drawings and documents for safety Prepare data sheets and specifications for material requisition including line pipes Provide material take-off and continuous monitoring of material changes Carry out preliminary surveys to determine the soil resistivity levels of different locations. Carry out protection current calculations, potential attenuation calculation, groundbed dimensioning & sizing of the feeding system (transformer/rectifier). Prepare layouts & drawings of the CPS insulating joints, feeding units & junction boxes, groundbeds, test points, feeding cable routes.

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x)

Installation details for feeding units, groundbeds, junction boxes, test points. xi) Prepare data sheets for all CPS materials. xii) Evaluate technical inquiries and bids xiii) Review and approve Manufacturers/Suppliers data and drawings xiv) Witness and report performance test at Manufacturers/Suppliers shop xv) Review Manufactures/Suppliers recommended spare parts and prepare detailed list for two years operations xvi) Co-ordinate and verify Manufacturers/Suppliers detailed engineering and documentation xvii) Prepare document for Sub Contractor(s) xviii) Prepare interface documents, review and validate documents prepared by other Parties and existing drawing as applicable to the Work. xix) Prepare and issue all documents and provide assistance required to allow COMPANY to obtain approval from Authorities at all stage of design and construction prior to start up of the construction activities. xx) Provide access to facilities, data tools and results to COMPANY for carrying out detailed engineering safety and technical audit. xxi) Prepare final documentation as specified in Section 3.5 and in accordance with the requirements set forth in the COMPANY’s CONTRACTOR agreements. 3.4

Specific Engineering Requirements CONTRACTOR shall implement and complete the Basic Design documents and prepare all new documents as required to complete the Work. CONTRACTOR shall prepare and issue detailed engineering material specifications, construction specification and detailed calculations/analyses related to pipeline stress, hydraulics, stability, expansion, bends, anchoring forces, anchoring blocks, hydrostatic testing and depressurisation etc. including program validation reports, computer print outs and CD as applicable. Caesar 11 Stress Analysis software shall be used for the stress analysis modelling. Contractor shall submit stress analysis Model along side the Stress analysis report for review. All software used shall be the latest version. CONTRACTOR shall produce all necessary detailed drawings to define the pipeline and the appurtenances. The drawing shall include but not limited to the following: i) P & ID’S ii) Process calculation Report iii) Typical drawings iv) Alignment sheets v) Pipeline General Drawing vi) Ground profile of pipeline route axis vii)Cathodic protection system drawings & layouts viii) Civil works drawings -

CONTRACTOR shall prepare detailed calculation/analysis, drawings and procedures for the pipeline project and all type of crossings, which shall include but not necessarily be limited to the following. Similarly Design factor to be used for calculating pipeline wall thickness shall be as per recommendations of Basic

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Engineering Design Data (Design Premise) 07486.PLI.MEC.SPC Design Criteria For Buried Pipeline.

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3214.10.BGRA.16519,



Crossings of watercourses The design shall include topographical survey, soil investigation, hydraulic study and assessment of impact on the depth of laying the pipeline in order to define the buoyancy and protective measures.



Crossings of roads and tracks. The design shall include topographical survey, soil investigation and the traffic impact on the depth of laying the pipeline in order to determine the protective measures.



Crossings of pipelines and flowlines. CONTRACTOR shall conduct any necessary location survey and provide temporary protective measures/procedures as required to perform the Work. 

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Crossings of electrical cables and conduits CONTRACTOR shall conduct any necessary location survey and provide temporary protective measures/procedures as required to perform the Work.

CONTRACTOR shall develop the detailed engineering and design of a permanent cathodic protection system. CONTRACTOR shall develop detailed procedures for the hot-tapping connections (if applicable). CONTRACTOR shall develop maintain and submit to COMPANY on a regular basis a comprehensive list of drawings and documents (Document Register). CONTRACTOR shall carry out complementary site survey including soil resistivity survey as required for the detail design, cathodic protection and construction. CONTRACTOR shall prepare and update during the performance of the work and shall maintain and submit to COMPANY after completion of the Work a complete set of “As built” drawings. CONTRACTOR shall prepare and update during the performance of the work and shall maintain and submit to COMPANY after completion of the Work all construction and material line pipe data. The structure of the file data shall be approved by COMPANY to assure the import in COMPANY’s Pipe Tracking System. 3.5

Final Documentation The final documentation shall include but not necessarily be limited to: i)The operating manual ii) The safety manual iii) Final issue of all pipeline drawings “As built”, documents and Manufacturers/Suppliers data iv) All welding procedures records, certified and complete

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viii) ix) x) 3.6

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All welders qualification records, certified and complete All welding radiography and all other NDT test records certified and complete Final pipeline report showing joint number, length, installation locations weld number bends, survey record and computation properly signed and complete and all other data and information as required by the Contract Complete data transfer dossier for inclusion (by COMPANY) in the PTS system Hydrostatic test certified and completed Cathodic protection tests record certified and complete.

Drawings and Documentation’s This paragraph outlines the COMPANY’ s requirements with respect to the project and final drawings to be supplied by the CONTRACTOR. It is recommended that a CAD system is used to prepare all drawings. In case of exceptions to this requirement, the COMPANY shall approve the extent of the CAD application. Drawings shall be prepared according to COMPANY standards and CAD specifications. The CONTRACTOR is responsible for updating all drawings to “As-Built” status and signing them off on completion of the construction. The COMPANY will provide the successful bidder with the COMPANY format sheets, standard symbology, layering, text and line standards all on floppy disk. Drawing numbers will be supplied by the COMPANY. All reference drawings and matchline cross-references shall use COMPANY drawing numbers. All documentation to be supplied by the CONTRACTOR will be stored on disk file using the following software:    

Drawings Text documents Electronics sheets Calculation Data

Autocad Microsoft Word Microsoft Excel Standards ASCII characters

(Releases to be defined with COMPANY) 3.7

Engineering Documents Approval All engineering documents shall be approved by COMPANY engineering department or any other party nominated by COMPANY in writing to the CONTRACTOR. The approved engineering documents shall be stamped “ Approved for Construction “ and duly signed by COMPANY QA/QC officer or the equivalent in COMPANY nominated party. Engineering documents in this instance refer to all documents that involve review, fabrication or construction and installation.

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Maintenance Engineering(CMMS Data). Computerized Maintenance Management System Data Documentation EPC Contractor presents as being competent in providing all maintenance data required for the proper maintenance of equipment and facilities in the contract. Company uses Format SAP PM software for the management of maintenance. Contractor shall provide all the data on the equipment and facilities in this contract according to Company specifications and SAP PM templates for upload to the software. EPC Contractor shall have in his workforce at least one (1) SAP PM Certified Engineer with a minimum experience of two(2)years. Document on the Certification and experience are to be provided as proof. EPC Contractor’s SAP Certified Engineer shall demonstrate competence/ proficiency in the use of SAP PM and maintenance engineering in carrying out all the under listed activities. EPC Contractor shall review the standards listed in conjunction with drawings and P&IDs ( where available) to understand what is required. The standards are : 27954.MAN.GEN.SDS Maintenance Management Data from Vendors & EPC Contractors . 20666.MAN.GEN.SDS Maintenance Entities Requirement 20198.COO.GEN.SDS Item Numbering 06215.DOC.GEN.SDS Facilities Functional Units 20665.MAN.GEN.SDS Plant Breakdown Specification Following due diligence, professional ethics, Eni safety standards and anti corruption ethics, The EPC Contractor shall deliver the CMMS work scope listed below. The EPC Contractor shall provide electronic manuals from Original Equipment Manufacturers(OEMs) as a guide to SAP standard texts (i.e. detailed task instructions for the maintenance of each equipment /items installed)and bills of materials. The EPC Contractor shall provide relevant Technical Data of each maintenance item for inclusion in SAP according to Eni standard document no. 20666.MAN.GEN.SDS Maintenance Entities Description. The EPC Contractor shall provide a Bill of Materials: Do equipment report (type/class/category, tag number, description, manufacturers model/type/arrangement number/frame, location, etc) as necessary to identify and collate the different types of equipment, their numbers and where they are used. Provide a bill of materials (spare parts list) per equipment, complete with warehouse management parameters (minimum level, maximum level, reorder level and estimated annual consumption) per station/plant. Some maintenance items already have some of this data in SAP, but contractor shall update existing ones where necessary and provide for the missing ones according to Eni/NAOC standards.

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Prepare/update bill of materials for each Maintenance Strategy (i.e. maintenance intervals) and plan, where materials are needed to carry out the job. The EPC Contractor shall provide for and prepare all the SAP PM Templates that are necessary for loading additional data into Format SAP PM software, ready for SAP PM implementation. Such templates include but may not be limited to the following: (1)Functional Location Template, (2)Equipment Template, (3)Material Bill of Materials, (4) Bill of Materials Contents, (5)Measuring Points Template, (6) Standard Texts Template (7)Task Lists Template, (8) Maintenance Items Template, (9) Maintenance Plans Template and (10) Objects Lists Template (11) Equipment life expectancy documentation

4.0

CONSTRUCTION WORK

4.1

General Construction Works shall be understood as all construction activities including precommissioning, commissioning and start-up, to ensure that the built pipeline is in conformance with the design, mechanically complete, as per the Contract Documents and ready for COMPANY taking over. All construction Works shall comply with approved construction drawings and specifications and all applicable codes standards and regulations outlined in the Design Premises Doc. No. 3214.10.BGRA.16519 The construction Work to be performed by CONTRACTOR shall include but not limited to, clearing and grading of Right of Way, unloading, loading, hauling, storage and stringing of line pipes and other materials; all ditching, bending, concrete coating of line pipe, welding of pipe including coating of field joints and coating repairs, lowering-in and backfilling; tie-in, installing river, creeks and other watercourses crossings including banks restoration, crossing of roads, pipelines, flowlines, cable and other buried or above ground structures painting,hot-tapping connections (if applicable), valves installation, internal pipeline cleaning, hydrotesting and dewatering, gauging and cleaning-up and restoring pipeline Right of Way including temporary extrawork space; providing the necessary engineering, management,

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supervision, personnel equipment, materials and support facilities and performing all other works necessary to completely construct the NPS 12 Gas Pipeline in accordance with the specifications and drawings to be prepared by CONTRACTOR and approved by the COMPANY and the provisions outlined in Contract. CONTRACTOR shall furnish all labour, tools supplies, vehicles, construction equipment construction camps, storage and marshalling yards, laydown yards; hydrostatic testing and de-watering equipment; gauging and inspection tools and equipment, welding rods, concrete materials, pipe concrete coating materials, pipe coating materials for coating of field joint, coating repairs, material for painting, materials required for bedding and padding of pipeline trench, bank restorations, materials for maintaining and restoring access roads, culverts; material sacks for restoration and all other designated materials, equipment, supplies and services which may be required for performing and completing the Work. CONTRACTOR shall also manage, plan and coordinate all external interfaces related to the construction of the pipeline as outlined in Section 2.4 of this document. 4.2

Construction Management CONTRACTOR shall set up a Project Construction Management team headed by a Project Site Manager who shall report to CONTRACTOR Project Manager and provide full construction management at the Work Site. Under the authority of Project Site Manager CONTRACTOR shall develop and implement an organisation in order to assure the following: i) ii) iii) iv) v) vi) vii) viii)

i) ii) iii) iv) v) vi) vii) viii)

Safety:

CONTRACTOR shall have a project safety program, approved by COMPANY Security: CONTRACTOR shall have a project security program (considering the present security suitation in the Niger Delta) approved by COMPANY. Quality Assurance/Quality Control, according to the requirements of COMPANY and of the project Community Relation Management Project Control and Scheduling Material to cover all aspect related to material receiving, storage and issuing Material tracking Field engineering including:  Technical supervision  Engineering follow-on  Field survey and data collection for “As built”  Field survey and data collection for the implementation of PTS Material management and control Transport Attendance to management and weekly progress report Monthly measurement and reporting on work progress Management of Sub Contractor(s) Management of Manufacturer/Supplier at site Taking measures to protect all adjacent or adjoining property against damage by construction activities Management and disposal of construction debris and construction surplus material

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ix) Management of changes. 4.3

Safety CONTRACTOR shall take extra care in conjunction with NAOC safety rules to assure that the integrity of the existing Pipeline/Flowlines, Environment, Flowstations and Manifold are maintained throughout the duration of the works.

4.4

Labour CONTRACTOR shall supply and assign to the site all labour required to perform the work such as foremen, high skilled, skilled, semi-skilled workers and helpers required to perform the Work. CONTRACTOR shall also provide all other labour as required to proper support during the work execution.

4.5

Tools and Consumables CONTRACTOR shall provide all electrical and air powered machines and hand tools and all consumables including gasoline, diesel fuel lubricants, gases, welding rods, test material, miscellaneous hardware and all other tools and consumable required for the construction activities.

4.6

Mobilisation CONTRACTOR shall mobilise all equipment, personnel, support facilities, storage/marshalling yards, construction camps, warehouse, and laydown areas as required to perform the Work.

4.7

Transport of Pipes and Materials from Port of Entry to Storage/Marshalling Yard CONTRACTOR shall be responsible for offloading at shipside all pipes bends and other permanent materials at the port of entry and loading and transporting the materials to the storage/marshalling or concrete coating yards in accordance with the requirements of project specifications and the Contract.

4.8

Transport of Pipes and Materials to Work Site CONTRACTOR shall provide all labour and equipment necessary to load and transport all pipes and other materials from storage/marshalling or concrete coating yards to the Work Site. Transport of line pipes, materials, equipment personnel and others to the Work Site will require CONTRACTOR to furnish adequately sized terrestrial vehicles (trucks) and barges.

4.9

Construction Camps CONTRACTOR shall provide temporary construction camps at the Work Sites for the accommodation of its own personnel, COMPANY personnel and Manufacturers/Supplier. The camps shall include medical, catering and laundry facilities. The camp shall also contain all necessary field office accommodations for the execution of the work. CONTRACTOR shall be responsible for all rental, utilities, temporary support facilities, permits, security etc. required to provide a full functional, operating camp.

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Camp and Field Office Accommodation for COMPANY Personnel CONTRACTOR shall provide living, office accommodation and transport (i.e. vehicles and boats) for COMPANY and COMPANY Representative field personnel for the duration of the installation Works. The office and accommodation shall be in accordance with COMPANY specification for office and site accommodation included.

4.11

Construction Work CONTRACTOR shall be responsible for completing the Scope of work in accordance with the Contract specification drawings and procedures. The Work to be performed by CONTRACTOR is to install and test: i) 15 kilometres approximately of NPS 12, 11.1/12.7mm wall thickness, API 5L-X65 SMLS pipeline and 3 kilometres approximately of NPS 24 (HDD across river niger), 15.9mm wall thickness, API 5L-X65 SAW pipeline. ii)

Cathodic protection system

iii) Slug Catcher

4.12

Detailed Work Description

4.12.1

Pipeline Civil Works The civil work to be carried out by CONTRACTOR include, but not limited to the following: i) ii) iii) iv) v) vi) vii) viii) ix) x) xi) xii) xiii) xiv) xv) xvi) xvii)

Access roads Pipe storage areas and marshalling yard Concrete coating of line pipe Right of Way clearing and grading Handling of topsoil (if required) Trenching in dry and swamp and mangrove swamp areas Trenching at watercourse crossing Trenching at road and track crossings Trenching at crossing of buried and above ground existing facilities Backfilling of pipeline trench in dry and swamp and mangrove swamp areas Backfilling of pipeline trench at watercourse crossings Backfilling of pipeline trench at roads and track crossings Backfilling of pipeline trench at crossings of buried and above ground existing facilities Clearing and restoration of Right of Way Restoration of watercourses banks Restoration of roads Trenches for ancillary and associated works

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Water drainage and hydraulic defence works Simple and reinforced concrete foundations and structures Steel supports and walk way Installation of line makers Installation of warning signs Installation of river crossing signs Supply of all material for civil works Clearing and reinstatement of all areas affected by the works Fencing work. Anchor block construction All other works necessary to complete the Work.

Mechanical Work The mechanical work to be carried out by CONTRACTOR include, but not limited to the following: i) ii) iii) iv) v) vi) vii) viii) ix) x) xi)

Loading transport handling unloading and storing of all material Stringing of all materials along the working R o W Bending of pipes Cleaning and coupling Welding Non destructive test NDT(radiographic gamma ray and ultrasonic test) Installation of casing pipes and assemblies Pipe laying in dry areas, swamp areas, mangrove swamp areas, watercourses crossings Installation of pipeline fittings Internal pipeline cleaning, gauging and hydrostatic test Pipeline de-watering

BENDING As per Technical Specification for Pipeline Construction. PIPE LAYING, LINE-UP AND WELDING As per Technical Specification for Pipeline Construction. COATING OF FIELD JOINTS As per Technical Specification for Pipeline Construction. PAINTING OF ABOVE GROUND INSTALLATION As per Technical Specification for Pipeline Construction. The CONTRACTOR shall provide NAOC with all painting procedures in accordance with Technical Specification for Pipeline Construction. LOWERING-IN No pipe shall be lowered into the trench until the trench has been inspected, prepared and approved for receiving the pipe. Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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The CONTRACTOR shall respect the lowering-in procedure as per Technical Specification for Pipeline Construction. BACKFILLING AND ROW RESTORATION The CONTRACTOR shall respect the procedure for pipeline backfilling and clean-up as per Technical Specification for Pipeline Construction. The contractor, at the end of the construction exercise shall ensure that the pipeline right of way (ROW) and any other area affected by the job are restore to there original position before the commencement of the construction activity CATHODIC PROTECTION SYSTEM Cathodic protection shall be installed as per Technical Specification for Pipeline Construction 3214.10.BTST.16524, in accordance with 27589.VAR.COR.PRG rev.1 – Guidelines for Design and Constuction of Cathodic Protection System and with Cathodic Protection System Design Philosophy, 3214.10.BERV.23854. Cathodic protection system shall consist of : Permanent CP system The works to be carried out by CONTRACTOR for the installation of cathodic protection system include, but not limited to the following: i) ii) iii) iv) v) vi) vii) viii) ix) x) xi)

Transformer rectifier Units installation Impressed Current Anode installation Impressed Current Anode Ground Beds Sacrificial Anode installation Sacrificial Anode Groundbed installation Reference Electrodes installation Junction boxes installation Surge Diverters Connecting cables Tests points Cable to pipe Connections

Temporary cathodic protection system CONTRACTOR shall design, supply and install all equipment and material necessary for temporary cathodic protection. PIPELINE TESTING & PRECOMMISSIONING CONTRACTOR shall carry out the testing and precommissioning in accordance with following Specifications. 3214.10.BTST.16524 3214.10.BTST.16535 3214.10.BTST.16576

Technical Specification for Pipeline Construction Pipeline Cleaning Gauging, Filling and Hydrotesting Pipeline precommissionig

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WORKING ADJACENT TO EXISTING FACILITIES CONTRACTOR shall place particular emphasis on aspects of the work relating to the safety of working in proximity to existing pipelines and services and existing facilities in plants areas. The work shall be carried out under a Permit-to –Work system as specified by the relevant operating Companies. CONTRACTOR shall prepare and submit, for Company approval, procedures and method statements which shall specifically address this aspect. Notification is required for entry into the Plant areas. At least 2 weeks’ notice or as may be required, for the scheduled Work is required. PIPELINE APPURTENANCES The Pipeline Appurtenances are defined in the Technical Specification for Pipeline Construction. The Pipeline Appurtenances shall be realised in accordance with the detailed design and Technical Specification for Pipeline Construction. a)

Isolating joints

Isolating joints shall be located as indicated in the project drawings and installed as per Technical Specification for Pipeline Construction. b)

Pipeline markers and warning signs

As per Technical Specification for Pipeline Construction procedures. AS-BUILT AND REQUIRED DOCUMENTATION The CONTRACTOR shall prepare the As-Built File according to approved procedure INSTALLATION OF FIBRE OPTIC CABLE IN PIPELINE TRENCH CONTRACTOR shall install the Fibre Optic Cable (F.O.C.) along the pipeline route, between AKRI and KWALE (refer to FOC Supply & Installation Specification, Doc.No: 3214.10.BISP.26807). The CONTRACTOR shall provide and shall be responsible for all the following activities: -

-

The installation of F.O.C. into an excavated trench. The installation of F.O.C. into steel pipe, installed by CONTRACTOR at road crossing. The installation of F.O.C. in HDPE duct installed by CONTRACTOR at swamp/mangrove areas and river crossing. Contractor to ensure that the HDPE is supported in-place (tied/attached to the pipeline) to prevent vibrations created by the water waves. The final termination of F.O.C at both ends (Akri and Kwale). Refer to Section 1.6 above.

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The correct use of backfill materials to ensure that the strain limits of the cable are not exceeded during backfill activities. The joint, test and commissioning of the complete Fibre Optic Cable to serve the three functions highlighted in Section 1.0

It is expected that CONTRACTOR will provide suitable equipment for all movements of the F.O.C., to ensure that no mechanical damage can occur. Contractor is also expected to seek the support of experienced personnel/sub-contractors when undertaking the aforementioned operation.

4.12.2 Scraper traps construction work (Not Applicable) General Construction Works shall be understood as all construction activities including pre-commissioning which entails verification of all conformity to ensure that the built scraper traps are in conformance with the design, mechanically complete and ready for commissioning as per the Contract Documents. All construction Works shall comply with approved construction drawings and specifications and all applicable codes standards and regulations outlined in the Pipeline Design Premise Doc. No. 3214.10.BGRA.16519 The construction Work to be performed by CONTRACTOR shall include but not limited to: Supply all labour, plant, materials, consumables, supervision, fuel, electric power, tools, equipment, craneage, transport, accommodation and each and every item necessary for the accomplishment of the Work. Supply of all materials necessary for the performance of the Work. Carry out preparatory Work including concrete batching plant establishment and production of test cubes, welder qualifications, weld procedure specifications and procedure qualification. All tests, qualifications, procedures and specifications are for Company review, witness and Approval prior to commencement of the Work; Provide setting out, levelling, establishing of temporary bench marks, monuments and final survey work; Supply labour and equipment for de-watering, inclusive of treatment and piping to dispose of water to an approved discharge point adjacent to the Sites limits. De-watering is Contractor’s responsibility, and CONTRACTOR shall at all times have suitable equipment on the Site; Carry out Site preparation including provision for access fence and gates and any hard standings that may be required to carry out the Work; Submit samples of items with relevant certificates for Approval prior to use, including slump and cube tests for concrete as required; Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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Carry out all testing as specified. Provide all documentation/certificates to validate material quality; Carry out fabrication, erection and hydrostatic testing, and installation of pipe work, valves, blinds and other in-line items, including installation and removal of temporary spools in place of those items for activities such as testing and flushing. Undertake testing, Pre-commissioning of mechanical, electrical and instrument systems; Construct paved areas surrounding scraper traps; Maintain and keep clean temporary and permanent roads and paving; Provide all environmental control and mitigation measures to meet noise, air emission water and waste discharge, etc, requirements and principles described within the Contract; Clean up Sites to satisfaction of Company. Dispose of building/construction waste as the Work proceeds in accordance with the requirements of the HSE section of the Contract; Remove all temporary access and all other Temporary Works including fencing and gates and re-instate to original condition or better. CONTRACTOR shall also manage, plan and coordinate all external interfaces related to the construction of the scraper traps and associated facilities. Equipment, Machinery and Packages The CONTRACTOR shall provide for the installation of equipment, machinery and packages, including in detail: -

Materials handling and all transportation to the site of installation Setting down on prepared supports and foundations All levelling and necessary alignment Final hydrostatic testing, flushing and cleaning Internal and external cleaning, flushing, air drying of piping after hydrostatic testing Installation and removal of temporary equipment, supports and scaffolding for installation and testing purposes Supply and fixing of anchor bolts Painting touch-up Protection against possible mechanical damage and against dust, humidity and rust.

Swamp area crossings Pipe laying of sections of the line running through swamp areas, where the load bearing capacity of the ground is insufficient for the passage of works plant, shall be carried out according to the detailed design and Technical Specification for Pipeline Construction. Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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The CONTRACTOR shall carry out supplementary investigations, in addition to those effected during the design phase, in order to define the construction criteria, the plant to use and the detailed work programme. In case, the Right-of-Way can first be improved by means of tree trucks or other low density material suitable for the purpose. In this case, the CONTRACTOR shall submit a detailed report to the COMPANY prior to commencing the work. Two methods may be considered for the installation of pipelines in swamps: 

The flotation method, where the pipeline is laid from a barge moving through a channel cut along the right of way.



The push-pull method, where the ditch is dug by a lightweight track-driven machine and the pipeline , fitted with buoyancy tanks if necessary, is pulled along the ditch and sunk. This method is preferred in environmentally sensitive areas.

Coating and Painting CONTRACTOR shall provide coating and painting as follows: i) ii) iii) iv)

Coating of field joint with heat shrinkable sleeves Repairs of line pipe coating at concrete coating yard and at site Coating/repair the coating of fitting Painting of a/g piping and steel structures.

CONTRACTOR shall provide and maintain all material and equipment necessary for the sandblasting, coating and painting of piping, pipe supports and steel structures. Concrete Coating CONTRACTOR shall provide materials and carry out the concrete coating of line pipes for the swamp, mangrove swamp and watercourse crossings. Hydrostatic Test CONTRACTOR shall perform the hydrostatic test of the pipeline. CONTRACTOR shall provide all necessary manpower, construction tools and equipment necessary to perform this activity. Dewatering CONTRACTOR shall perform the de-watering of the pipeline. CONTRACTOR shall provide all necessary manpower, construction tools and equipment necessary to perform this activity. Pre- Commissioning

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CONTRACTOR shall perform the pre-commissioning of the pipeline. CONTRACTOR shall provide all necessary manpower, construction tools and equipment necessary to perform this activity. Commissioning and start-up CONTRACTOR shall perform the commissioning and start-up of the pipeline. CONTRACTOR shall provide all necessary manpower, construction tools and equipment necessary to perform this activity. Hot tapping connection (If Applicable) CONTRACTOR shall perform all hot tapping connection of the pipeline. CONTRACTOR shall provide all necessary manpower, construction tools and equipment necessary to perform this activity. 4.12.3

Cathodic Protection System Permanent CP system CONTRACTOR shall design, supply and install all equipment and material necessary for cathodic protection.

5.0 PROJECT MANAGEMENT 5.1

Project Management

The CONTRACTOR shall perform all the Project Management services necessary for the execution of the Project. The CONTRACTOR shall appoint a capable and experienced Project Manager who will have authority to act on behalf of the CONTRACTOR and be responsible for the overall direction, co-ordination, control and performance of the Project activities. The CONTRACTOR shall perform all activities necessary for implementation of the works including the following: -

Project supervision and control Contract administration Quality Assurance & Quality control Planning & Scheduling Project reporting Invoice administration Change in work administration

Issue and distribution of documents and correspondence to the COMPANY as per contractual requirements in the English language 5.2)

Project Co-ordination and supervision

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The CONTRACTOR shall provide all the plans and procedures required or necessary to ensure the following: -

-

Ensure open communication lines with the COMPANY, Vendors, subcontractors and other parties which the COMPANY may call upon to participate in the execution of the works. Provide the COMPANY with all the information requested in order to allow the COMPANY to evaluate the performance of the CONTRACTOR, his Vendors and subcontractors. Ensure the proper co-ordination within the CONTRACTOR’s organisation for the orderly and smooth development of the activities. Provide for the required manpower in order to meet any and/or all the scheduled work targets. Conduct regular and programmed weekly and monthly meetings with the COMPANY to discuss the status of the various phases of the works and methods for resolving any difficulties encountered or foreseeable, and any other aspects of the work. Issue minutes promptly after each meeting. Evaluate all Works performed by Vendors and CONTRACTOR’s key personnel.

Inspection The CONTRACTOR shall inspect and test all work as required by the drawings and specifications and in line with good working practice and sound workmanship. He shall maintain proper inspection and control of the work executed on-site in order to ensure a good standard of workmanship at all times and compliance with all designs, standards, specifications and codes. The CONTRACTOR shall also provide services as and when required by the COMPANY's Site Inspectors, and shall comply with all requirements imposed by them with respect to the issuing of inspection certificates for all items.

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STRUCTURAL WORKS 6.1

Trap Support engineering (Not Applicable) CONRACTOR shall carry out detailed engineering for the traps at Akri flowstation and Kwale Gas Plant respectively, as indicated in the lunching & receiving trap area layouts. Engineering shall include the necessary FEED engineering including design optimisation and finalisation, detailed engineering including procurement, supply, construction, controls, testing and any other engineering work that CONTRACTOR may require to comply with the Scope of Work. CONTRACTOR shall develop the engineering on the basis of the Basic Design Document included in the Contract, and shall design structures to take care of all dead, live, test, impact, vibration, pipe expansion, thermal and friction, bundle pull, wind, trasportation, lifting and erection loads and forces. Engineering shall be in accordance with “Design specification for civil/structural works (doc. No. 3214.10.BASP.33001) CONTRACTOR shall prepare all necessary engineering documentation required for the Work, as specified in the Contract documents. CONTRACTOR shall perform the detailed engineering in accordance with its own engineering procedures amended to suit the requirements of Project Coordination Procedures. CONTRACTOR’s engineering activities shall generally include but not limited to the following: i) ii) iii) iv) v) vi) vii) viii) ix)

x) xi)

Prepare drawing list and document index Implement document control of CONTRACTOR, Sub CONTRACTOR drawings and documents using a computer data base in accordance with COMPANY requirements Prepare QA/QC procedures Review drawings and documents for safety Prepare data sheets and specifications for material requisitions Provide material take-off and continuous monitoring of material changes Coordinate and verify Sub CONTRACTOR detailed engineering and documentation Prepare document for Sub Contractor(s) Prepare and issue all calculation associated drawing.Provide assistance required to allow COMPANY to obtain approval from Authorities at all stage of design and construction prior to start up of the construction activities. Provide access to facilities, data tools and results to COMPANY for carrying out detailed engineering safety and technical audit. Prepare final documentation.

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Trap Support Construction (Not Applicable) CONTRACTOR shall provide all necessary civil, structural and earth works for the realisation of the platforms. All works shall be conforming to the latest requirement of standards, specifications and local related statutory regulation. All material shall be from new stock. All erection shall be supervised by competent trained personal fully experienced in erecting structural steelwork. CONTRACTOR shall provide erection method statement and all documents shall be submitted for approval by COMPANY prior to commencement of field work. Procurement and erection works shall be in accordance with followings project specifications: 3214.10.BAST.33004 3214.10.BAST.33003 3214.10.BASG.33007 3214.14.BAST.33011

General Specification for Structural Steelwork Material and Fabrication Specification for Concrete Works General Earthworks Specification Specification for Structural Steelwork Erection

6.3 Structural Pipe Supports CONTRACTOR shall provide the COMPANY with a detailed engineering and construction procedure for all necessary pipe supports. In particular the work to be performed shall include, but not be limited, to the following: a) Prefabrication in accordance with piping sketches and relevant standard specifications b) Materials handling and transport of prefabrication pieces from the place of storage to the site. c) Erection of pipe supports, ladders, walkways, etc. including partial fabrication of any scaffolding as required, and testing, according to drawings, standards and specifications. 6.4 Surface Preparation and Painting Unless otherwise stated, all the aboveground pipeline section and all aboveground supports shall be painted. The CONTRACTOR shall provide: a) Supply of paint products, blasting and cleaning materials, consumables and any relevant equipment required for their application. b) Painting (according to the relevant specifications and standards), including:  Collection from storage, handling and transport to the site of all painting materials  All sandblasting and cleaning of surfaces to be painted Data file: 331685937.doc This document is property of ENI S.p.A. who will safeguard rights according to the civil and penal provision of the law.

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 

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Painting Touch-up as required

6.5 Anchor Blocks If piping stess analysis indicates that anchor blocks are required to restrict above ground pipe movement, which may occur due to pressure and temperature changes in the pipeline, specially designed anchor flanges encased in concrete anchor blocks shall be installed underground on the main line, before the pipeline is brought above ground. CONTRACTOR shall provide: a) Supply reinforcing steel, concrete works and materials, etc., handling and transport of prefabricated pieces from the place of storage to the site. b) Construct concrete structures, foundations, piling, as required. c) Supply and installation of anchor bolts (where required). d) Erection of all necessary scaffolding (where required) e) Supply and erection of structural steel. f)

Grouting.

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7

SUPPLY

7.1

COMPANY Supplied Items

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The line pipe shall be supplied by the CONTRACTOR. Also, the coating of the line pipe shall be the responsibilty of the Contractor, as coating is part of the scope of work. 7.2

CONTRACTOR Supplied Items All materials required to realise the project shall be supplied by the CONTRACTOR. The CONTRACTOR shall be responsible for the overall procurement philosophy and timely delivery of quipment and material to the construction site, within the project schedule. The CONTRACTOR shall assure the maximun possible standardization when purchasing the various items appertaining to each plant system. The utilization of the COMPANY’S List of Supplier shall be mandatory. The M.T.O. attached to the tender documents shows indicatevily the materials, regarding pipeline system, to be procured, CONTRACTOR shall perform the detail engeeniring and provides for the final list of materials and quantities. CONTRACTOR shall also procure all items and materials regarding all platforms such as: steel pipes, pressings, beams, floor supports, grid floor pannels, handrailings and all other permanent and consumable materials required to complete the work. The Procurement activities to be developed by the CONTRACTOR shall include, but shall not be limited to, the following: - Section and submission to the COMPANY for approval of the list of SUBCONTRACTORS that the CONTRACTOR proposes to utilize for the project. - Identification and quantity calculations of equipments and materials to be purchased, including spare parts. - Material and equipment requisition preparation. - Issue of inquires to Suppliers/SUBCONSTRUCTORS. - Issue of purchase orders. - Expediting of purchase orders. - Factory inspection. - Supply of test certificates and conformity certificates. - Clearance of all the material and equipment through costums. - Trasport to work site.

7.3 PROCUREMENT The CONTRACTOR shall procure all items and materials necessary for the works, according to the specifications provided or stated and/or the requirements listed below.

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Line pipes The 12” Line Pipes shall be supplied by Contractor The characteristics of the Line Pipes supplied by Contractor shall be as follows:

    



 

Total length: Pipe length (average): Manufacture: Nominal diameter: Constant internal diameter: Wall thickness: Material: Coating:

15,000 metres 12.2 m SMLS 12” 304.9mm 11.1 mm/ 12.7 API 5L – X65 Coating of line pipes shall be Contractors scope of work.

The technical characteristics and quantity of line pipes to be used for L.R. Bends shall be in accordance with project data Sheet . Flanges and fittings The CONTRACTOR shall supply all flanges and fittings (Elbows, Bends, Reducers, Insulating Joints, etc.) necessary for the works. In all cases these shall conform to the rating and standards of the pipeline system. Bends All pipeline bends shall be produced by induction bending. Minimum bend radius shall be 5D (where D is the pipe O.D.). All bends shall be supplied with straight tangent ends at least 500 mm in length. Bends shall comply with requirements of 20337.SLI.SPM.FUN. and project specification 3214.10.BTST.16528. Fibre Optic Intrusion Detection System The CONTRACTOR shall supply the Fibre Optic Intrusion & Leakage Detection System (complete with fibre optic cable, interface control equipment, accessories, etc.) in accordance with project specifications and standards. Pipeline Instrumentation The CONTRACTOR shall supply all instruments required for the complete installation of the pipeline (including instrumentation for the launching and receiving traps, Shut-Off Valve, pressure switches, etc), in accordance with Project requirements and Specifications. Warning Tape The CONTRACTOR shall supply PWC warning tape, the tape shall be in accordance with the project specification. 7.4

Spare Philosophy for Construction Spare quantities are defined as follows:

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Description Line pipe

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Spare quantities 3% of total length

Line pipe for bends

3% of total length – 10 m min.

L.R. Bends

Min. No. 1 =90°

Casing Pipe

5% of total length – 10 m min.

Casing collar spacer

5% of the total number – min. 2

Casing end seal

5% of the total number – min. 2

Bulk materials

1 piece min. for each size and w.t.

Heat shrinkable Sleeves

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10 % of the total number

INTERNATIONAL STANDARDS

The latest editions of the following International Standards are to be considered as an integral part of these Specifications; Mechanical ASME VIII ANSI API ASTM AWS NACE PFI MSS

American Society of Mechanical Engineers American National Standards Institute American Petroleum Institute American Society for Testing Materials American Welding Society National Association of Corrosion Engineers Pipe Fabrication Institute Manufacturers Standardisation Society

Piping ANSI ASTM AWS NACE

American National Standards Institute American Society for Testing Materials American Welding Society National Association of Corrosion Engineers

Instrumentation & Electrical AGA CENELEC IEC NEMA

American Gas Association European Committee for Electrotechnical Standardisation International Electrotechnical Commission National Electrical Manufacturers Association

Structural

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American Welding Society

Civil ACI BSI

American Concrete Institute British Standards Institute

Surface Preparation & Painting SIS SSPC

Svensk International Standards Structural Steel Painting Council

Safety & Firefighting NFPA National Fire Protection Agency Quality Systems ISO

International Standardisation Organisation

8.2

COMPANY SPECIFICATIONS AND STANDARDS

In addition to what listed in Section regarding “PIPELINE MATERIALS” the following ENI standards shall be applied in the execution of the works unless otherwise stated in this document: 1) 06746.PLI.GEN.SPC Technical Specification for Pipelines and Flowlines Engineering 2) 20368.PIP.MEC.FUN Carbon Steel Piping Welding 3) 00300PLI.COR.SDS

Transportation and Gathering Pipeline Dielectric Joints for Pipeline Isolation

5) 07493.SLI.NAV.SPC

For Submarine Pipeline Welding Fittings

General Specifications: - 310520-SG-10

Management Contracts

Specification for Strategic Supply

- 310520-SG-02

Management Specification for EPC/EPIC Contracts

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