Flood Engineering and Operations Best Practices Workshop

Transcription

1 Flood Engineering and Operations Best Practices Workshop Place your chosen image here. The four corners must just cover the arrow tips. For covers, the three pictures should be the same size and in a straight line. Newark, New Jersey March 21, 2013

2 Post Superstorm Sandy Gas System Performance Monitoring Place your chosen image here. The four corners must just cover the arrow tips. For covers, the three pictures should be the same size and in a straight line.

3 Post Storm Monitoring Impact Approximately 140,000 customers touched 1,100 miles of main 32 pressure regulating / gate stations Extended exposure could rise to as high as 240,000 customers, 1,800 miles of main and more than 110 pressure regulating facilities in Downstate Monitoring Increased awareness, shared FEMA flood maps with Call Centers and Dispatching Technical bulletins issued, HP CNG bottles to clear gas services Cast Iron patrol, walking survey of flooded areas KPI s: Main & service leaks repairs, CI breaks, interruptions & drip pumping Three (3) year base line data used for leading indicator Identified areas of special interest Fig-1. Distr. mains within flood zone in Brooklyn, Queens & Rockaways 1,800 1, Dec 16-Dec 31-Dec 15-Jan 30-Jan 14-Feb 1-Mar Fig-2. KEDLI Interruptions of comparison to previous three years 3

4 Areas of Special Interests Communication Weekly call with Field Operations, Construction, CMS, I&R, Gas Control, Dispatching, Resource Management and Support Services to review performance matrix and develop solutions Analysis & Actions (Excl. Breezy Pt & New Dorp) Identified eighteen (18) areas of special interest, 8-NYC & 10-LI Surveys discovered more than 275 leaks Identified additional 37,000 LF of main replacements to: Improve service delivery Reduce Risk LP to HP conversions Prioritized and issued WOs Belle Harbor, Freeport & Babylon Fig-3.Identified Areas of Interest in NYC and LI Fig-4. Spatial Data for Interruptions at Area of Interest, Belle Harbor NY 4

5 LI-1: Leak & Interruption Data Region Town Description LI-1 Roxbury 2 miles of LP bare steel system Type-1 Main Leaks Type-1 Service Leaks C.I. Main Breaks Interruptions # of time drips pumped Short Term Recommendations Investigate the source of water intrusion Long Term Recommendations TBD; accelerate the replacement of LPP with high pressure?? 5

6 LI-1: Proposed Scope of Work 6

7 Main Replacement Initial Estimates KEDLI Area of Interest Town Mains-Install, ft LPP Mains-Retire,ft Estimated Cost LI - 1 Roxbury 8,172 Roxbury 1,093 9,510 $ 3,500,000 LI - 2 Belle Harbor 20,124 23,470 $ 8,750,000 LI - 3 Long Beach 1,765 1,257 $ 750,000 LI - 4 Long Beach N/A N/A N/A LI - 5 Island Park 2,495 3,380 $ 1,200,000 LI - 6 Freeport 2,750 3,075 $ 1,000,000 LI - 7 Breezy Point 59,733 LI - 8 Breezy Point 12,297 71,588 $ 33,800,000 LI - 9 Belle Harbor 3,274 5,214 $ 1,350,000 LI - 10 Merrick 4,115 2,975 $ 920,000 LI - 11 Tompkins, Babylon 1,222 2,800 $ 430,000 LI - 12 Cormack, Babylon $ 345,000 Total 118, ,219 52,045,000 KEDNY NYC - 1 Richmond - SI NYC - 2 Bayridge - Brooklyn 1,950 1,800 $ 1,072,500 NYC - 3 Bayridge, Brooklyn NYC - 4 Hamilton Beach - 1,020 TBD NYC - 5 Coney Island, Brooklyn 4,565 4,417 $ 1,190,750 NYC - 6 Coney Island, Brooklyn NYC - 7 Richmond, SI NYC - 8 Coney Island, Brooklyn Total 6,515 7,237 2,263,250 Grand Total 124, ,456 54,308,250 7

8 Network Strategy Storm Hardening Design & Considerations Place your chosen image here. The four corners must just cover the arrow tips. For covers, the three pictures should be the same size and in a straight line.

9 Elements for Design & Considerations Service Regulators Water Intrusion System Isolation Pressure Regulating Facilities Bridge Crossings 9

10 Protection of Service Regulators Investigating the utilization of float check valves on customer service regulators Gas Materials and Standards currently evaluating/testing float check valves 34,000 Service Regulators Replaced/Inspected 100,500 HP Services in located in flood zones across New York KEDLI: 57,000 KEDNY: 25,000 NMPC: 18,500 10

11 Service Regulator Retro-fits 11

12 Preventing Water Intrusion Proactively targeting leak prone pipe (LPP) replacement within coastal flood zones Upgrade of Low Pressure (LP) Distribution Systems to High Pressure Additional Resources Leverage Public Works Activities Community Outreach Required 12

13 Downstate NY Service Area Impacts 1700 Miles of main in located in flood zones KEDLI: 1100 Total KEDNY: 627 Total 883 HP / 217 LP 229 HP / 399 LP 113 Pressure Regulating Facilities located in flood zones KEDLI: 54 KEDLI: 59 13

14 Upstate NY Service Area Impacts Upstate NY 842 Miles of main in located in flood zones 768 HP / 74 LP 46 Pressure Regulating Facilities in flood zones 14

15 Water Removal from Low Pressure Distribution System 15

16 System Isolation Review of existing sectionalizing districts for consideration of areas in flood zones Sectionalizing district sizes customers Incremental critical valves requiring annual inspection Targeted installation of valves on low pressure distribution systems Evaluating possible use of water detection equipment along with installation of Remote Operated Valves on low pressure systems 16

17 Sectionalizing Districts 17

18 Pressure Regulating Facilities Focus on hardening or mitigation of critical facilities Gate Stations Elevate Heaters and Air Intakes Elevate Generators Ensure communications (i.e. SCADA equipment) & electrical power sources are located appropriately Wind Issues Consideration for trees and power lines Regulator Stations Vent Poles Height considerations for regulator tubing Evaluation of each existing & proposed stations for relocation Oil Seals on low pressure systems Relocation of electrical equipment from vault to street box enclosure 18

19 19

20 Regulator Station Risk Assessment 20

21 Regulator Station Risk Assessment 21

22 Flooded Regulator Station 22

23 Regulator Station Vent Post Design 23

24 Bridge Crossings Critical Valve Placement Considerations for Single Feeds Rotterdam Junction, Upstate NY Post Hurricane Irene / Tropical Storm Lee Actions Mohawk River (i.e. Erie Canal) Flooding, Upstate NY 24

25 Lock 9 - Rotterdam Junction Supply 25

26 Lock 9 - Replacement 26

27 What Have We Done in the Wake of Superstorm Sandy Short Term Actions Conducting Post Sandy Gas System Performance Monitoring Collection & analysis of customer interruption data Identified 18 Areas of Interest Longer Term Strategy Work In Progress. Scope of work being finalized will include recommended LPP replacements, LP to HP conversions and elimination of pressure regulating stations, etc. Pursuing Federal Funding targeted infrastructure improvements KEDNY, KEDLI and NMPC LPP Replacement, Remote Operated Valve (ROV s), Service Regulator Flood Mitigation 27

28 Recent Utility Actions Consolidated Edison Rate Case Filed February, 2013 $100M / 4 Year Plan focused on Storm Hardening $6.4M Installation of Float Check Valves on Service Regulators $33.3M Incremental LPP Replacement (Bare Steel and Cast Iron) Other initiatives being evaluated include system upgrades, ROV s, pressure regulating station hardening, SCADA/communications improvements Public Service Electric & Gas Submitted Proposal to NJ Board of Public Utilities $3.9B / 10 Year Plan to protect and harden electric and gas systems $1.04B - Replacement and modernization of 750 miles of LP cast iron within or near flood areas $140M Protection of natural gas metering stations and LNG station in flood zones 28