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Problems identification of existing distribution systems

Problems identification of existing distribution systems. By : Eng. L. L. A. Peiris DGM ( Central). 1.0 Introduction.

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Problems identification of existing distribution systems

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  1. Problems identification of existing distribution systems By : Eng. L. L. A. Peiris DGM ( Central)

  2. 1.0 Introduction • Regional Support Centre – Central consists of Kandy, Matale & Nuwara-Elya districts and O&M sections is managed by three O&M Managers (Kandy East, Kandy North, Kandy South). • GOSL is planning to provide additional 400,000 new service water connections by 1st Quarter 2015. • Inline with the above project RSC- C is planning to provide 43,100 number of new service connections. MATALE KANDY NUWARA ELIYA Cont ……

  3. 2.0 Objective • To present the problems identified in existing distribution systems of Central Region. Cont ……

  4. 3.0 General Scope of Works • Supply of required pipes and fittings • Laying of distribution pipe lines • Provision of new service connections • System Improvements Intake improvements Increase carrying capacities of lines Introduce new control devices Bundle pipe/under depth pipes/ AC lines replacement Cont ……

  5. 4.0 Issues observed in distribution systems 4.1) Pipe line Extensions • Time taken for purchasing pipes, fittings and pumps etc • Documents are based on the data provided by OICs and may lead to issues of reliability • Time limitations to carry out network analysis and provision of Engineering drawings (Subsequently contractor submit the survey data) • Time limitations in the assessment of carrying capacity existing distribution systems • Possible no. of connections may vary depends on the actual requirements • Getting approval from relevant Road Authorities. i.e. Breaking of Asphalt /tar layer, reinstatement ( temporary and permanent ) • Contractor has to work in large coverage area • Connections to the existing system and interruptions Cont ……

  6. 4.0 Issues observed in distribution systems Cont …… 4.1) Pipe line Extensions Cont… • Availability of back filling material • Obstacles in pipe laying in trenches( i.e. Rocks, roots, service ducts of other service providers, etc.) • Traffic diversion issues • Shifting of pipe lines due to road widening • Providing rider mains in asphalt /tar roads • Dealing with regulatory bodies such as Police Cont ……

  7. 4.0 Issues observed in distribution systems Cont …… 4.2) Provision of Service Connections • Delays in obtaining approvals for road crossings, damages to carriage way. • Delays associated with the purchasing materials • Payments related to individual service connections • Due to limitation of allocated time frame , pressure testing of the pipe lines will be done after providing service connection of the pipe line.(i.e. after fixing Ferrule , clamp saddle, etc.) • Delaying due to lack of required documents to provide service connections • Land problems to lay the service line • Proper safety arrangements • Pack Numbering , delaying in document transferring to main office, billing & collection problems. Cont ……

  8. 4.0 Issues observed in distribution systems Cont …… 4.3) System Development • Additional time requirement to complete the analysis & design • Unforeseen delays in purchasing materials • Delays and contractual issues creating unexpected construction process • Obstructions regular complains from community Cont ……

  9. 5.0 Possible delays in obtaining approvals • RDA/PRDA/ PS road Approvals. • Land acquisition . • Bridge Crossings / Railway crossing • Electricity Supply • Getting Approval from Mahaweli Authority • Approval from Environmental Authority Cont ……

  10. 6.0 Logistical Support • Additional staff requirement • Transport Facilities • Other logistical requirements • Computers • Survey equipment • Purchasing unforeseen extra materials ( pipes and fittings)

  11. DISCUSSION

  12. The End Thank you For Your Participation

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