1.0 SCOPE OF WORK 1.1 General Overview ABC Engineering & Projects Pvt. Ltd. (hereinafter referred to as the “Contractor”), an ISO 9001:2015 certified EPC organization with over 10 years of proven experience in refinery and hydrocarbon sector projects, hereby submits its Scope of Work proposal for the Revamp of the Crude Distillation Unit (CDU) and Vacuum Distillation Unit (VDU) at the Indian Oil Corporation Limited Mumbai Refinery. The proposed revamp works shall be executed on a Lump Sum Turnkey (LSTK) EPC basis and shall include complete Engineering, Procurement, Construction, Testing, Pre-commissioning, and Commissioning assistance for the successful upgrade and integration of the existing refinery process facilities in accordance with the Client’s tender specifications, applicable statutory regulations, and international refinery engineering standards. The approximate project value is INR 45 Crore. 2.0 PROJECT OBJECTIVE 2.1 Objective of Revamp The primary objective of the CDU/VDU revamp is to enhance operational efficiency, improve throughput reliability, optimize energy utilization, and ensure compliance with updated refinery safety and operational standards without adversely impacting ongoing refinery operations. The Contractor shall execute all activities necessary to achieve safe integration with existing operating units while minimizing shutdown duration and operational disruptions. 3.0 ENGINEERING SCOPE 3.1 Detailed Engineering The Contractor shall perform complete detailed engineering for the revamp works including, but not limited to, the following activities: Process design validation and revamp assessment Hydraulic analysis of existing piping systems Equipment sizing verification and debottlenecking study Preparation of Process Flow Diagrams (PFDs) Preparation and updation of Piping & Instrumentation Diagrams (P&IDs) 3D model development and clash analysis Isometric drawings and piping GA drawings Pipe stress analysis in accordance with ASME B31.3 Structural adequacy assessment for modified loads Electrical load study and cable schedule preparation Instrument loop drawings and control philosophy Hazardous area classification review Shutdown planning and tie-in engineering 3.2 Engineering Standards and Codes All engineering activities shall comply with the latest applicable editions of the following standards and codes: ASME B31.3 — Process Piping API 650 — Welded Tanks for Oil Storage API 610 — Centrifugal Pumps for Petroleum Services API 570 — Piping Inspection Code API 653 — Tank Inspection and Repair IEC Standards for Electrical Systems NFPA Standards for Fire Protection Systems OISD Standards applicable to refinery installations Indian Boiler Regulations (IBR), wherever applicable ISO 9001:2015 Quality Management Requirements 3.3 Engineering Deliverables The Contractor shall submit the following key deliverables: 1. Project Execution Schedule – Within 7 Days 2. PFDs & Updated P&IDs – Within 3 Weeks 3. Equipment GA Drawings – Within 4 Weeks 4. IFC Piping Drawings – Within 6 Weeks 5. Electrical & Instrument Drawings – Within 6 Weeks 6. Shutdown & Tie-in Plan – Within 5 Weeks 7. QA/QC Documentation – Prior to Construction 8. As-Built Documentation – Within 30 Days of Mechanical Completion 4.0 PROCUREMENT SCOPE 4.1 Procurement Responsibilities The Contractor shall be responsible for complete procurement, inspection, expediting, transportation, and delivery of all materials and equipment necessary for execution of the revamp works. The procurement scope shall include: Process piping and fittings Valves and specialty valves Structural steel materials Electrical cables and cable trays Instruments and junction boxes Pipe supports and accessories Gaskets, fasteners, and consumables Insulation and painting materials 4.2 Vendor Inspection Inspection and testing activities shall be carried out in accordance with approved Inspection & Test Plans (ITPs). Third-party inspection agencies approved by the Client shall be engaged wherever specified in the tender requirements. Material Traceability Records (MTRs) shall be maintained for all critical refinery service materials. 5.0 CONSTRUCTION SCOPE 5.1 Site Construction Activities The Contractor shall execute all field construction activities including: Dismantling of identified existing systems Fabrication and erection of process piping Equipment erection and alignment Structural steel erection Electrical cable laying and termination Instrument installation and loop checking Fireproofing, insulation, and painting Tie-ins during planned shutdown windows Hydrotesting and reinstatement works 5.2 Construction Methodology Construction activities shall be executed in accordance with approved Method Statements, Job Safety Analysis (JSA), and refinery permit-to-work procedures. All hot work activities shall strictly comply with refinery safety protocols and OISD guidelines. The Contractor shall deploy qualified supervisors, certified welders, safety officers, and QA/QC personnel throughout the execution phase. 5.3 Welding Requirements All welding activities shall comply with: ASME Section IX Approved Welding Procedure Specifications (WPS) Procedure Qualification Records (PQR) Welder Qualification Records (WQR) Minimum 10% radiography shall be carried out for process piping weld joints unless otherwise specified by the Client. 6.0 TESTING AND PRE-COMMISSIONING 6.1 Mechanical Completion Activities The Contractor shall perform: Hydrostatic testing Pneumatic leak testing where applicable Flushing and cleaning Air blowing Calibration of instruments Loop checking Functional testing of electrical systems 6.2 Pre-Commissioning Support The Contractor shall provide commissioning assistance including: System handover dossiers Punch point rectification Trial run support Operator assistance during startup Final documentation submission 7.0 HEALTH, SAFETY AND ENVIRONMENT (HSE) 7.1 HSE Compliance The Contractor shall implement a comprehensive HSE management system compliant with: OISD refinery safety standards ISO 45001 Occupational Health & Safety requirements Applicable environmental regulations of Maharashtra Pollution Control Board (MPCB) A dedicated HSE team shall be deployed at site for continuous monitoring and compliance enforcement. 7.2 Safety Targets The Contractor commits to achieving: Zero Lost Time Injuries (LTI) Zero major fire incidents 100% toolbox talk compliance 100% PPE adherence at site 8.0 QUALITY ASSURANCE AND QUALITY CONTROL 8.1 Quality Management All project activities shall be executed under the Contractor’s ISO-certified Quality Management System. The QA/QC scope shall include: Material receiving inspection Welding inspection NDT coordination Dimensional verification Painting and coating inspection Final mechanical clearance 8.2 Documentation Control All project documentation shall be maintained through a controlled document management system ensuring revision traceability and timely submission. 9.0 PROJECT SCHEDULE 9.1 Execution Timeline The Contractor proposes to complete the entire EPC scope within 10 months from the effective date of Letter of Award (LOA), including engineering, procurement, construction, and pre-commissioning support activities. Critical shutdown activities shall be completed within the refinery shutdown window as finalized jointly with the Client. 10.0 SCOPE EXCLUSIONS The following activities are excluded from the Contractor’s scope unless specifically included in the final Contract Agreement: Statutory fees payable directly to government authorities Long shutdown extensions beyond approved duration Supply of Client free-issue materials Major civil foundation modifications not identified in tender documents Operation and maintenance beyond commissioning support period Existing underground utility rerouting not indicated in AFC drawings Process performance guarantee beyond defined tender parameters 11.0 CONTRACTOR’S COMMITMENT ABC Engineering & Projects Pvt. Ltd. remains committed to executing the CDU/VDU Revamp Project with the highest standards of safety, quality, engineering excellence, and schedule adherence. The Contractor appreciates the opportunity extended by Indian Oil Corporation Limited and looks forward to establishing a successful long-term professional association through safe and timely project delivery in line with the Client’s operational objectives and refinery standards. 1. SCOPE GAPS — COMMONLY MISSED IN EPC TENDERS 1.Shutdown Interface Planning Many tenders fail to clearly define tie-in responsibilities, shutdown sequencing, and refinery coordination methodology, leading to lower technical evaluation scores. 2. Construction Constraint Identification Lack of mention regarding live refinery work restrictions, SIMOPS management, and access limitations weakens execution credibility. 3. Document Submission Schedule Generic deliverable commitments without specific timelines reduce confidence in engineering preparedness and project controls capability. 2. COMPLIANCE CHECK — VERIFY BEFORE SUBMISSION Confirmation of compliance with all applicable OISD standards Inclusion of detailed HSE statistics and safety commitment Confirmation of validity period of offer and execution schedule Confirmation of compliance with refinery permit-to-work systems Inclusion of deviations/clarifications list, even if NIL 3. WINNING EDGE TIP Include a dedicated “Refinery Shutdown Management Strategy” subsection with manpower histogram, hour-by-hour shutdown execution plan, and tie-in methodology. IOC technical evaluators typically score higher for bidders demonstrating strong shutdown execution capability and operational risk minimization. 4. FOLLOW-UP TEMPLATE A professional follow-up email is provided below. Subject : Submission of Technical Proposal – CDU/VDU Revamp Project Dear Sir/Madam, We thank you for the opportunity to participate in the tender for the CDU/VDU Revamp Project at Mumbai Refinery. This is to confirm that our technical proposal and supporting documents have been submitted in accordance with the tender requirements within the stipulated submission timeline. We trust that our proposal demonstrates our technical capability, refinery project experience, and commitment toward safe and timely project execution. We remain available for any further clarifications, technical discussions, or presentations required during the evaluation process. We look forward to the opportunity of working with Indian Oil Corporation Limited on this prestigious project. Thanking you. Yours faithfully, For ABC Engineering & Projects Pvt. Ltd. Business Development & Proposals Department