NIGERIAN ELECTRICITY REGULATORY COMMISSION Presentation on the Nigerian

NIGERIAN ELECTRICITY REGULATORY COMMISSION Presentation on the Nigerian Electricity Supply and Installation Standards (NESIS)Regulations (An Overview) Engr. Tasiu Saad Gidari Wudil, FNSE, FNIEEE, SMIEEE AT The Nigerian Society of Engineers 2018 Engineering Conference Workshop on Harmonisation of Standards in West African 28 th Nov 2018

PREAMBLE Technical Regulations are necessary in the industry to ensure the reliability of supply, protection of life and equipment as mandated by the EPSR Act 2005. The Act (Section 99) has repealed Cap 256 LFN 1990, Electricity Act under which the S. I. 5: Electrical Installation Regulations and the S. I. 6: Electricity Supply Regulations were issued in 1996 2

INTRODUCTION NERC is mandated by the EPSR Act, 2005 to ensure the quality, safety affordability and availability of electricity to all consumers. Section 32. 2(b) also mandates the Commission to: establish or, as the case may be, approve appropriate operating codes and safety, security, reliability and quality standards; Section 98(1) of the Act states that “Any regulations, By-laws, or notices which immediately before the initial transfer date, were in force under the Electricity Act or the National Electric power Authority Act shall continue in force, mutatis mutandis, as if they have been made by the Commission under this Act and may be amended or repealed upon the issuance of regulations by the Commission in accordance with the provisions of this Act”. The Presentation gives a brief overview of the Nigerian Electricity Supply and Installation Standards (NESIS) Regulations.

SCOPE OF THE WORK FOR THE TWG The Technical Working Group (TWG) was tasked to develop a legal instrument, enforceable by law, and administered by NERC in close collaboration with the entire industry, particularly the Distribution and Transmission segments but Generation was later added. The TWG was expected to draw on documents previously used by the industry to develop a “live” document considering the evolving nature of the Nigeria Electricity Supply Industry. Documents consulted include: • The CAP 106 LFN/E 7 • The Electric Power Sector Reform Act, • The Distribution, Grid, Health & Safety and Metering Codes, • Operational Manual (NEPA) - Distribution • Many other technical literature

Technical Working Group for the draft of the Nigerian Electricity Supply and Installation Standards (NESIS) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Formation of the Technical Working Group (TWG) Inauguration and First Technical Session (2012) Subsequent five(5) Sessions Sub-groupings of the Technical Working Group Transmission Group - Led by Prof. Frank Okafor (Power Systems) Distribution Group - Led by Engr. Cole Akinsola (LSEB) User-Site Group - Led by Chief Etim James (LECAN) Generation - Led by Prof. Kayode Denloye (Chem. Engg) Working Document/Draft Public Consultation and Public Hearing conducted by NERC (2014) Final Document for Commission’s approval. 5

REPRESENTATION Representative Agency Persons The Nigerian Society of Engineers 2 Persons including Chairman Fed Min. of Power 3 Persons including ex-DD (EIS) NERC (+Secretariat of the TWG) Five persons – 4 Engineers and a Lawyer Distribution Companies Enugu, Kaduna, Eko Discos Generation Companies Shiroro & Egbin Gencos Transmission Company (TCN) 2 Persons State Electrification Board 1 Person from LSEB Standards Organisation of Nigeria 3 Persons including Director (Standards) Universities 4 Persons (UNN, ATBU and UNILAG) Energy Commission of Nigeria (ECN) 1 Person Lawyers 2 Persons Rural Electrification Agency (REA) 1 Person Technical Code Panels Grid, Distribution & Metering Codes Licensed Electrical Contractors Ass. Of Nigeria 1 Person 6

SUPPORT BY THE COMMISSION • Adequate financing of the project • Timely release of funds • Moral support by the Chairman of the Commission, Commissioners & Staff • Moderate budget utilised on the project 7

WORK DONE SO FAR • Review and adoption of the draft Table of Contents. Completed During the First Session in Abuja • Review the components of the CAP 106, Act, Grid, Distribution and Metering Codes (and Similar) • Consider the segments COVERED/ NOT COVERED by CAP 106/E 7 in the Act and the Codes • Made references to Standards (IEC, IEEE, BSI, ASME, ASTM etc) • Final Draft Submitted to NERC on 23 rd May, 2014 • Public consultation in June 2014 • Public Hearing on 2 nd September, 2014 • Final Approval by Commission possibly next week

Contents of the Draft NESIS • Table of Contents • Foreword • Introduction • Scope • Normative References • Definition of Terms & Abbreviations • General Provisions 1. Compliance with the Nigerian Electricity Supply and Installation Standards 2. Qualification for Engineering Personnel 3. Inspection of Electrical Facilities 4. Documentation and Reporting Obligations 5. Penalty for Non-compliance with the Nigerian Electricity Supply and Installation Standards 6. Environmental Impact Assessment (EIA) Report 7. Amendments a. b. c. d. Constitution of Panel Leadership of Panel Mode of Amendment Derogation 9

NESIS Content Chapter 2 Transmission Substations 1. Overview 2. Civil Works 3. Electromechanical Works 4. Health, Safety and Environment Chapter 3 Transmission Lines 1. Overhead Transmission Conductors 2. Insulator for Overhead Transmission Lines 3. Dielectric Strength of Overhead Transmission Lines 4. Supporting Structures 5. Regulations for Installation 6. Particulars of Installation for Side-by-side Use and at Adjacency to and Crossing with Other Objects 7. Protection against Lightning and Falling Trees 8. Underground Transmission Lines 9. Special Transmission Lines 10. SCADA Systems 10

NESIS Content Chapter 4 Injection Substations Installations Chapter 5 Distribution Network Chapter 6 Distribution Substations 1. Civil Works 2. Electromechanical Works 3. Secondary Equipment 4. Health, Safety and Environment 5. Water Supply 6. Emergency and Standby Systems 7. Disposal of Pollutants 8. Switchyard Illumination 9. Electrical Hazards 10. Fire Fighting and Protection Equipment 1. Basic Specifications for Distribution Network 2. Overhead Distribution Lines 3. Service Drop Lines 4. Metering 5. Underground Distribution Lines 6. Special Distribution Lines 1. Civil Works 2. Basic Distribution Substation Components 3. LV Distribution (Feeder Pillar) Panels 4. Compact Transformer Substation 5. Pole Mounted Distribution Substation 11

NESIS Content Chapter 7: User’s Sites Electrical Installations 1. Indoor Installations 2. Outdoor Installations 3. Special Installations Chapter 8: System Operation and Maintenance 1. Distribution System Operation 2. Distribution System Maintenance Chapter 9: 1. 2. 3. 4. 5. 6. 7. 8. 9. Classification of Equipment and Types of Tests Power and Distribution Transformers Continuity Test Vector Group Ratio Test Magnetic Balance Test D. C. Winding Resistance Check Insulation Resistance Test Circulating Current Test Capacity Confirmation Test 12

NESIS Content Chapter 9 Classification of Equipment and Types of Tests (Contd’d) 10. Magnetizing Current and Core Loss 11. Efficiency and Regulation Test 12. Temperature Rise 13. Transformer Oil Test 14. Dissolved Gas Analysis 15. Transformer Auxiliaries 16. Oil Surge Relay 17. Arcing Horn Chapter 10: Inspection Checks and Preventive Maintenance 1. Transmission Installation 2. Distribution Installation 3. Consumer Installation 13

NESIS Content Chapter 11: Earthing 1. Standards and Specifications 2. Definition 3. Introduction 4. Equipment Earthing 5. Maintenance of Earth Electrodes at Power Stations and Substations 6. Earthing in Residential Premises 7. Earthing in Commercial Premises 8. Earthing in Industrial Premises 9. Earthing in Construction Sites 10. Earthing in Mobile Sites 11. Stand–by Generator Installation 12. Steel Poles and Street Lighting Columns 14

NESIS Content Chapter 12: Generation 1. Site Requirements • Site Approval; Documentation; General License; Geotechnical Investigations; Hydrology; Water Permit; Environmental Impact Assessment (EIA) 2. Plant Design (design consideration, governing system and plant lay out) • Fuel Handling (fuel source, stack emission, waste disposal and other environmental consideration); Technical Documentation 3. Civil design and works 4. Site preparation (earth works, access, property fencing, plant room/control room building/quarters, equipment plinth, drainage, cable trenches, gravelling) 5. Construction of on-shore power plant • Responsibilities of the Licensee or Contractor; Responsibilities of the Project Manager; Pre-Requisites For Commencement Of Construction; Pre-Construction Site Meeting; Environmental Health And Safety Induction; Site specific Health and Safety Plan; Record keeping 6. Construction of off-shore power plant (The construction of offshore power plant shall be in compliance with the provision of IEC 61892 -1 for mobile and fixed offshore units) 7. Capacity/Performance testing (These shall be based on ASME PTC-46 1996. The test shall be supervised by the Commission) 8. Power Evacuation • Voltage Levels and Variations; Frequency Level and Variations; Technical Criteria for Plant and Apparatus at the Interconnection Point; Performance Requirements for Power Stations 15

Public Consultations • The Draft NESIS Regulation was made public for consultation in June 2014 • Collection of comments closed in July • Five reviews (5) were received • Fifty three comments (53) recorded for deliberations during public hearing on 2 nd September • Only 5 issues were referred to the Commission 16

Conclusions • EPSR Act provided for repeal or amendment of S. I. 5 and S. I. 6 • Enforcement had been with EIS department of the FMo. P • Review of Regulations was conducted by NERC with stakeholders and public consultations and Hearings • NESIS Regulations will replace the S. I. 5 and S. I. 6 Regulations 17

Questions and Discussions

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