Presentation on theme: "Set up as the Central Electricity Board in 1949, National Electricity Board until !990 and since then as Tenaga Nasional Berhad (TNB), it is the largest."— Presentation transcript:
Set up as the Central Electricity Board in 1949, National Electricity Board until !990 and since then as Tenaga Nasional Berhad (TNB), it is the largest electricity utility in Malaysia and a leading utility company in Asia. Core business: Generation, Transmission and Distribution of electricity No. of Employees: more than 34,900 Almost RM 99 billion in assets Total installed capacity more than 20,000 MW
Energy Demand in Malaysia Electricity Industry in Malaysia
3 Introduction to TNB Janamanjung (TNBJ) Current Plant Configuration - 3 x 700 MW Coal Fired Current Net Capacity MW Commissioned in 2003 Extension: 1 X 1000MW USC Boiler by March 2015 Current manpower: 525 (A wholly owned subsidiary of Tenaga Nasional Berhad )
TNBJ’s location in Peninsular Malaysia TNBJ
Type of Plant - Pulverised Coal Firing Net Capacity - 2,100 MW Plant Configuration - 3 x 700 MW Boiler Capacity - 3 x 2390 t/hr of steam o C) Interconnection kV, double circuit line Current coal sources: Kalimantan (Indonesia), Newcastle (Australia) & South Africa procured through TNB Fuel (TNB subsidiary) Coal stockyard design for 1.5 months supply Estimated annual consumption 6 million tones Main Plant (Unit 1, 2 & 3)
1. BACKGROUND – Project Overview Plant Capacity1000 MW (Nominal) Technology Pulverized Coal Combustion; Supercritical Plant Project ConceptBuild, Own and Operate (BOO) Project Start Date31 March 2011 Scheduled Completion Date for EPC Contract 31 March 2015 Emission Standards World Bank Requirements & Malaysian DOE Standards New Plant - Unit 4
1. BACKGROUND – Project Overview EPC Contract Alstom n CMC Consortium Owner’s Engineer Tokyo Electric Power Services Co. Ltd and Minconsult Sdn. Bhd. Joint Venture New Plant - Unit 4
1. BACKGROUND – Satellite View
2. TECHNOLOGY – Comparison Salient FeaturesM 1/2/3 M4 Temperature566 o C600 o C Pressure165 bar270 bar Efficiency34 -37%38-42% Reduced CO 2 emissionTotal reduction = 60gCO 2 /kWh Boiler Material – Final Superheater Up to Alloy Steel (T91/T92) Stainless Steel (304H) Boiler Feed pump3 x 50 % Motor driven 2 x 50% Turbine driven + 1 x 30% motor driven (start- up/back-up) Rotor typeSolid monobloc forgingWelded rotor (HP/IP/LP) IPB TypeNatural CoolForced Cool Stringent water regime Uses Boiler Drum, can do Blowdown Once-through Boiler, uses Condensate Polishing Plant
1. BACKGROUND – Key Dates
2. TECHNOLOGY – Ultra-supercritical boiler Supercritical technology is considered as a fully proven technology The reference plant for the ultra-supercritical plant in US and China
Low Environmental Emissions Operate at higher efficiencies of average ~ 40% (Consume less coal and therefore produce fewer emissions per kWh output) Reduction of 158,000 metric ton/annum of CO 2 emission in comparison to a similar conventional power plant. 2. TECHNOLOGY – Advantage of Ultra-supercritical
Flue Gas Emission Design Flue Gas Emission Limits/Design for Manjung 1,2 & 3 comply with World Bank Guideline Environmental Designs and Standards
Risk TNB’s definition of risk: Anything that has the potential to prevent the organisation from achieving its objectives. TNBJ has identified 7 specific risks: Specific Risk IDSpecific Risk GEN-JAN-0001Low Plant Reliability GEN-JAN-0004Breach of plant security GEN-JAN-0014Breach of Legal and Regulatory requirements. GEN-JAN-0024Fire or explosion GEN-JAN-0025 Accidents leading to fatalities / injuries or property damage GEN-JAN-0029Corruption/ fraud GEN-JAN-0031Low Plant Efficiency
Common Systems Risk Profile No Description of Shared Critical System Description of Impact on System Failure Likelihood of Failure Impact of Failure Gross Risk Rating 1Coal Delivery SystemUnavailability of coal to all boilers.LikelyCatastrophic High 2Water Treatment Plant Unavailability / Contaminated Demin water to the plant. ModerateCatastrophic High 3Hydrogen StorageCommon storage for all unit generatorsModerateCatastrophic High 4Distillate Storage & Supply System Common storage for all units. Used for light up and combustion support. UnlikelyCatastrophic High 5Raw & Service Water Supply Unavailability of Demin Water to boilers. UnlikelyCatastrophic High
Issues & Challenges 1)Coal spontaneous combustion 2)Boiler tube leak 3)Strain on plant (higher demand and low cost) 4)Ensuring variance of coal (prevent over reliance) 5)Decrease in supply of good coal, more competition 6)Tighter Environmental Regulations 7)Public perception; easy scapegoat
1) Coal spontaneous combustion Coal is susceptible to spontaneous combustion. o Compacting coal piles to reduce the amount of air within the pile. o Minimizing coal storage times, First In First Out (FIFO) o Continuous monitoring for hot spots. When a hotspot is detected, the ignited coal should be removed. o Regular & disciplined housekeeping Preventive measures
2) Boiler Tube Leak Tube overheating Clinker formation Preventive measures Uncompromising Sootblowing activities. Adhering plant operating limits Replacement of component based on life assessment study. Condition monitoring of boiler tube during overhaul. Low coal quality Differing operational regime for new coal Ageing plant Over heating of boiler tubes
Spare must be readily available. Long term agreement with Service Providers. Spare must be readily available. Long term agreement with Service Providers. 3) Strain on Plant (higher demand and low cost) Coal plant required to run constantly on full load due to: High demand of electricity High merit order, high load factor. Cheaper to burn coal than gas Low coal CV (require more coal per MW) – strain on coal delivery system Preventive Measures
4) Varieties of coal Different types of coal used, each with different properties and characteristics. Each trial burn has its own risk. Boiler needs to be tuned according to type of coal Overheating, emission control Preventive measures o Alert to what type coal is being sent to boiler. o More attention on coal milling operation. o Daily discussion on coaling activities during Production Meeting
5) Decrease in supply of good coal, more competition Preventive measures Increase in maintenance frequency of critical equipment eg mills Support from OEM on boiler tuning Engage Technical Service Advisor
6) Tighter Environmental Regulations Investment for compliance Bag filters FGD Improved boiler design and technologies
7) Public perception Preventive Measures Improve awareness and Educate the public Improve relations/buy in with public esp surrounding communities CSR program with communities Long outstanding perception of coal is dirty Conveniently blamed by public
CSR Activities by TNBJ
Program Penanaman Bakau bersama Komuniti di Daerah Manjung melibatkan murid-murid sekolah dan penduduk kampung. Program ini diadakan untuk mendidik para peserta kepentingan dan sumbangan pokok bakau dalam kehidupan kini.
Program Sambutan Perayaan Deepavali di Rumah Anak-anak Yatim Seri Manjung diadakan untuk meraikan anak-anak yatim sempena perayaan Deepavali. Persatuan dan kesatuan di TNB Janamanjung turut serta dalam program ini.
Program Sambutan Perayaan Tahun Baru Cina di Rumah Orang-orang Tua dan Kg KDSK Seri Manjung untuk meraikan orang-orang tua dengan pemberian limau mandarin, angpau dan jamuan makan tengah hari.
Program Kayuhan Hijau bersama DOE Negeri Perak diadakan sempena Minggu Alam Sekitar Malaysia. Warga kerja TNB Janamanjung turut terlibat dalam kayuhan ini yang bermula di UniKL dan berakhir di Marina Island.
Program Back to School Di Pasaraya Giant Seri Manjung diadakan untuk membantu meringankan beban keluarga kurang berkemampuan untuk persediaan persekolahan anak-anak mereka. Sepasang baju sekolah dan keperluan pembelajaran disumbangkan. Beberapa buah keluarga kurang berkemampuan di sekitar kawasan Seri Manjung terlibat dalam program ini.
35 Program ‘Confirm A’ Untuk Pelajar Tahun 6 di sekitar Daerah Manjung telah diadakan dengan kerjasama diantara TNB Janamanjung Sdn. Bhd. dan Uniten. Program ini membolehkan pelajar Tahun 6 membuat latihan UPSR melalui laman sesawang yang direka khas oleh Professor Dr. Azree dari Uniten.
36 OTHER ACTIVITIES Majlis Sumbangan kepada Akaun Amanah CSR telah diadakan di SUK, Ipoh Perak. Akaun Amanah CSR ini ditubuhkan untuk kerajaan Negeri Perak melaksanakan aktiviti CSR di seluruh Negeri Perak.
Awards Received by TNBJ
ASEAN Coal Awards – 25 th September 2013 Organized by ASEAN Centre for Energy to promote coal and Clean Coal Technology (CCT) TNB Janamanjung is the sole representative for Malaysia and won 2 categories : 1.Corporate Social Responsibility (CSR) : “TNBJ’s CSR – Station in Harmony with Community” 2.Special Project : “TNBJ Quality Journey to PAS55 Certification”
Human Resource Minister Award th December 2013 Human Resource Minister Award 2013 – Large Employers (Service)
TNBJ Won Bronze For Product Excellence Award In Global CSR Summit & Awards 2014 In Bali, Indonesia 3 rd April 2014