SNGPL Industrial Training Report Presentation
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This presentation was delivered at ICET, Punjab University, Lahore. And i got third position among all the fellow presentations.This is the industrial training report presentation.
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SNGPL Industrial Training Report Presentation
- 1. 1
- 2. INTERNSHIP OBJECTIVE • To Solidify the ideal concepts of Chemical Engineering • To observe and learn the managerial aspects of the Industry 2
- 4. Vision Statement • To be the leading integrated natural gas provider • To improve the quality of life of our customers • Achieve maximum benefit for our stakeholders • Uninterrupted and environment friendly energy resource. 4
- 5. Mission Statement A commitment to deliver natural gas to all door steps by optimally employing • THO Resources • Best Practices • High Ethical Standards 5
- 6. 6
- 7. • 46 years of experience • Sui to Peshawar • 3.4 M consumers in North Central Pakistan • 7,347 KM of Transmission System Pipeline • 67,449 KM of Distribution System Pipeline • 1,624 towns & villages • 584,895 MMCF Annual Gas Sales (2008-09) 7
- 8. Natural Gas • The Environmental Fuel • Major Energy Source • Narrow Combustion Range ( 4 -14 %) 8
- 9. 9
- 10. Distribution Department • Safe, Reliable and Efficient distribution of natural gas through the utility pipes to customer • 8 Regional Offices • 3.35 M Domestic Consumers • 52,242 Commercial Consumers • 5,953 Industrial Consumers 10
- 11. Internship in Distribution Department Operations and Metering Department Quality Assurance Department Corrosion Control Department Development Department 11
- 12. • Accurate measurement of gas, operation and maintenance of all metering and regulating stations • Calibration of Instruments • Schedule meter replacement • Repair of all meters at Central and Regional meter shops 12
- 13. • CMS (Consumer Meter Station) supplies gas to consumers at the desired pressure. Regulators Regulators Meters ON/OFF VALVE ON/OFF VALVE Pressure Gauge INLET OUTLET 13
- 14. INLET OUTLET 14
- 15. A very precise regulator is installed upstream of the meter By the use of volume correctors or P/T recorders 15
- 17. INLET Meter Pressure / Temperature Recorder Valve Regulators Regulator OUTLET 17
- 19. A regulator is defined as a mechanism for controlling or governing the moment of machines, the flow of liquids and gases. It is often referred to as CONTROL VALVE, GOVERNER, PRESSURE REDUCER. 19
- 20. Three basic regulator control actions normally encountered are 1. ON-OFF 2. PROPORTIONAL ACTION 3. PROPORTIONAL RESET 20
- 21. Three elements in this case are 1. Sensing Measuring Element 2. Restricting Element 3. Loading Element 21
- 22. Flow Chart for Checking/Repairing of Meters Receipt of Meters Repair Card Flow Proving Meter Seal Checking Internal Tampering, Reparability checking Initiate Scrapping Repairing/Overhauling Flow Proving Leakage Testing Painting Dispatch Area Resealing & Dispatching Repair Area If not within Accuracy If not Repairable Within Accuracy Repairable 22
- 23. • Corrosion is the electrochemical oxidation of metals in reaction with an oxidant such as oxygen • It can be concentrated locally to form a pit or crack or it can expand across the whole surface • Passivation and Chromate- Conversion can increase a material's corrosion resistance 23
- 24. • To protect all company underground pipeline from corrosion • To ensure optimal use of utilization of pipelines • To enable continuous, safe and reliable delivery • To avoid any adverse effect on environment, people and assets 24
- 25. • To Protect pipeline through Cathodic Protection • To Prevent, Detect, Mitigate corrosion and assessment of pipeline integrity by applying best engineering practices • Maintain Safe and High Technical Standards to ensure continuous and reliable delivery 25
- 26. • Galvanic Corrosion • Pitting Corrosion • Crevice Corrosion • High Temperature Corrosion 26
- 27. 1. Surface Treatments 1. Applied Coatings 2. Reactive Coatings 3. Anodization 2. Cathodic Protection (CP) 3. Galvanic CP 4. Impressed Current CP 27
- 28. • To control the corrosion of a metal surface by making it work as a Cathode of an Electrochemical Cell • Cathodic Protection systems are most commonly used 28
- 29. In Galvanic/ Sacrificial Anode CP system the high energy electrons required for CP are supplied by the corrosion of active metal. This is illustrated in the figure below. 29
- 30. Impressed current system depends on a supply of high energy electrons to stifle anodic reactions on a metal surface. These high energy electrons are supplied by a rectifier 30
- 31. Sui Northern Gas Pipelines Limited will ensure that The health of its employees, its consumers and its contractors is protected. All its activities are carried out safely. Environmental performance meets legislative requirements. There is continuous improvement in HSE performance. 31
- 32. 32
- 33. To meet • The requisite Specification • Applicable Codes and Standards 33
- 34. AGA Gas calculation / measurement facility ASME American Society of Mechanical Engineers ASTM American Society for Testing Material ANSI American National Standard Institute BS: 2008 British Standard code of practice for Cathodic protection system BS: 4146 British standard for pipeline Protective Coating Material API 1104 Welding ASME B31.8 Gas Transmission & Distribution systems API 1107 Repair welding API 5L Specifications of line pipe API 6D Specifications of valves ASA B 16.5 Specifications for flanges BS: 4147 British standard for pipeline Protective Coating Material CP 1021:73 British Code of Practice for Cathodic protection system Safety Rule Mineral Gas Safety Rules Pakistan EPA Environment Protection Act of Pakistan CSAZ 245-20 & 245-21 3 Layer PE Coating Standards DIN 30670 3 Layer PE Coating Standards OGRA Oil and Gas Regulatory Authority PPRA Public Procurement Regulatory Authority Environmental Rule Environmental Protection Act 1997 34
- 35. • Pipeline Construction • Coating • Welding & Welders Qualification • Gas Leak Detection • Technical Audit • Air/Hydrostatic 35
- 36. 1. Welding Team 2. Meter Installation Team 36
- 37. 37
- 38. 38
- 39. 39
- 40. 40
Notas do Editor
- Compressors Aik fazool jaga Stipend Students not willing to go there for internship And those who were going were not sure about the job what they will do there
- THO stands for Technological, Human and Organizational
- The conceptual study of Project-IX is underway to carry maximum gas beyond Multan , to facilitate gas consumers from all walks of life in central Punjab and Northern areas of the country. The basic intent of Project-IX is the elimination of bottle necks in SNGPL’s existing transmission network and to transport gas to independent Power Plants in Punjab province, through system up-gradation with loop lines and system compression enhancement, beside construction of pipelines to absorb additional gas available from gas sources of Potohar region and newly discovered Gurguri-Makori field in Karak District of Khyber Pakhtoon Khwa province.
- Sui Northern Gas Pipelines Limited (SNGPL) is the largest integrated gas company serving more than 3.4 million consumers in North Central Pakistan The Company has over 46 years of experience in operation and maintenance of high-pressure gas transmission and distribution systems SNGPL transmission system extends from Sui in Baluchistan to Peshawar in Khyber Pakhtoon Khwa (KPK) comprising over 7,347 KM of Transmission System (Main lines & Loop lines). The distribution activities covering 1,624 main towns along with adjoining villages in Punjab & Khyber Pakhtoon Khwa are organized through 8 regional offices. Distribution system consists of 67,449 KM of pipeline. SNGPL has 3,451,142 consumers comprising Commercial, Domestic, General Industry, Fertilizer, and Power & Cement Sectors. Annual gas sales to these consumers were 584,895 MMCF worth Rs. 168,933 million during Jul 08 - Jun 09. There are 12 departments in SNGPL and it is difficult to discuss their hierarchy as it is similar to the other organizations, so we skipped it for the sake of simplicity
- It is one of the most abundant energy sources in Pakistan Comprised primarily of methane, natural gas is odorless and colorless when it comes out of the ground Prior to distribution, a harmless odorant is added to the gas so any leakage can be easily detected before an unsafe situation occurs it has a very narrow combustion range, igniting only when mixed with air at a ratio of between 4 and 14 percent . It also requires a very high degree of heat, at least 1200 degrees Fahrenheit, before it will ignite natural gas has become the environmental fuel of choice for many residential, commercial and industrial applications
- 28 gas resources in pakistan 1571 MMCFD production 4 in NWFP with 91 MMCFD production 8 in punjab with 150 MMCFD production 3 in balochistan with 475 MMCFD production 5 in sindh with 855 MMCFD production
- SNGPL Gas Distribution department is responsible for the safe, reliable and efficient distribution of natural gas through the utility pipes to customers Distribution department is distributing 1680 million cubic feet per day (mmcfd) natural gas to 3.45 million customers in 1542 towns and Villages of Pakistan There are 3.35 million domestic consumers, 52,242 commercial consumers and 5,953 industrial consumers The skilled and trained staff is available in widespread regions and sub-areas to attend emergencies and customer complaints. The department has a fully established and well equipped central metering workshop with latest flow proving, testing and meter calibration facilities
- In distribution dept. there are many depts inside but we were sent to these departments. Now we will briefly describe their responsibilities and working procedures
- Metering Department is responsible for accurate measurement of gas, operation and maintenance of all metering and regulating stations having following major scope of work. Operation and maintenance of instruments like Valves, Regulators, Relief Valves, Electronic Volume Corrector, Meters etc. Calibration of Instruments such as Pressure / Temperature Recorders, Calorimeters, Gauges etc. Design of metering and Regulating Stations Conduct raids to catch gas pilferage Schedule meter replacement Operation and Augmentation of Distribution network Repair of all types of meters at Central and Regional meter shops
- 1. Fixed Factor Measurement: A very precise regulator is installed upstream of the meter which ensures fixed pressure to the meter all times. The temperature of gas is normally measured by the P/T recorder in the close vicinity of the CMS Important Guidelines: Regulator should have minimum droop (pilot operated) Regulator should be properly sealed Regulator should be adjusted at low flows i.e. within the capacity of the regulator at operating conditions. Restricting orifice should be used at the downstream of the meter to avoid overloading of the meter/sudden jerk to the meter. 2. High Pressure Measurement: By the use of volume correctors / P/T recorders The inlet pressure (metering pressure) is usually not fixed Fluctuating line pressure enters into the meter (metering pess.) The volume corrector or P/T recorder on the meter senses /records instantaneous line pressure and flowing temperature (EVCs only) and applies corresponding conversion factor automatically / manually in case of P/T recorders to compute standard volume at the base conditions. The capacity of the meter enhances with increase in metering pressure. If the line pressure is more than the MAOP of the meter / volume corrector, a suitable regulator should be installed upstream of the meter to set the pressure within the MAOP. Important Guidelines: Monthly volume correction ratio report must be prepared to check the performance of volume corrector Monthly downloads of EVCs should be taken to check / analyze the data and any alarm conditions. During site inspections, it is a good practice to note corrected and uncorrected readings at an interval of ½ to 1 hour and compute the metering pressure applied by the volume correctors which should be cross checked with physical metering pressure. The pressure gauges to note inlet/delivering pressure should be installed downstream of the meter In case of P/T recorders the monthly calibration of P/T recorders must be performed and consumer/his representative’s endorsement must be taken. This will help in resolving any billing disputes at the later stages.
- Upstream Measurement with Volume Correctors A Volume Corrector is mounted on the meter, which automatically applies Pressure/Temperature factors on the volume of gas registered by the meter to calculate corrected volume at Base Conditions.
- There are three essential elements for a regulator. To measure sense the desired level of control pressure If the desired deviates due to changing conditions, there must be a device to change the flow of material in the system to suit the system conditions, usually this element is a variable restriction or a valve. There must be some means of positioning the valve in response to the deviation detected by the sensing element. Three basic regulator control actions normally encountered are: on-off, proportional action, proportional reset.
- The Automatic Self Operated Regulator. Three elements in this case are: - Sensing Measuring element: diaphragm bourden tube etc. Restricting Element: Variable restriction in valve, it could be single port, double port etc. Loading Element: Weight spring etc
- Corrosion is the electrochemical oxidation of metals in reaction with an oxidant such as oxygen. Formation of an oxide of iron due to oxidation of the iron atoms in solid solution is a well-known example of electrochemical corrosion, commonly known as rusting Corrosion can be concentrated locally to form a pit or crack, or it can extend across a wide area more or less uniformly corroding the surface methods to reduce the activity of the exposed surface, such as passivation and chromate-conversion, can increase a material's corrosion resistance
- a technique to control the corrosion of a metal surface by making it work as a cathode of an electrochemical cell Cathodic protection systems are most commonly used to protect steel, water or fuel pipelines and storage tanks, steel pier piles, ships, offshore oil platforms and onshore oil well casings
- It shall ensure that quality standards are met according to requisite specifications, applicable codes and standards are laid down in the manuals of operational departments
- Activities related to pipeline construction Coating Inspection (Plant & Field) Welding Inspection Welding Procedure and Welders Qualification Gas Leak Detection Technical Audit according to program provided by the Management Air/Hydrostatic Testing Any other assignment by Management
- There are two teams in this department. Welding Team Meter Installation Team And we, as internee, were sent along with both of the teams to visualize the working procedure as well as the working equipments.
- Welding Team performs the following tasks: Welding Coat Warping Soap Test
- This team installs three types of meter installations. RC (Meter Reconnection) Installation Online Meter Installation Common Meter Installation The schematic diagram of common meter installation
- We thought that it is better choice to give some suggestions instead sharing our PERSONAL EXPERIENCE IT DOES NOT MEAN THAT Distribution department is not worthy for internship But better choices should be always elected.