Assets Installation, operation and maintenance of Street Lighting Assets

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1 Agenda 9:00 AM ADMINISTRATIVE ITEMS Chair of Working Group 9:30 AM ONGOING ISSUES Present and examine ongoing issues associated with Street Lighting Assets Installation, operation and maintenance of Street Lighting Assets Working Group Terms of Reference 10:30 AM STANDARDS AND GUIDELINES Existing relevent Standards and Guidelines 11:30 AM NEXT STEPS Determine next steps Establish future meeting dates 1

2 Streetlight Assets working Group Root-Cause Investigation 2

3 Purpose Convey the state t of electrical l safety with Streetlighting System (SLS) Present cases of incidents related to SLS Not to lay blame at anyone or any organization Move forward and reduce SLS safety issues 3

4 Root Cause Investigation Not limited it to street t lights ESA conducts root cause investigations Serious incidents (fatalities, critical injuries and serious fires) Incidents that potentially can harm public Done for the purpose of prevention Goes beyond Code infraction or Regulations infraction 4

5 Not a new issue Not limited to Canada More prevalent in North-East of the Continent Not limited to publicly owned assets BIAs, Mall owners, Property owners are faced with the same problems 5

6 Root Cause Investigation Uses Event and Causal Sequence (ECS) Chart Identifies Latent and Active failures Barriers broken (safety net/standard/work procedure) Judgment of Needs (gaps in the safety framework) 6

7 Broken Barriers 7

8 Chain of Events In 2004, a 30 year-old woman was electrocuted while walking her dog She stepped on a handwell that t was energized ConEd started a proactive program of identifying electrical fault in SLS 8

9 City of Boston In July 2005, the City of Boston issued a report of the Joint Task Force on Electrical Safety Joint Task Force involved the Mayor, Nstar, Commissioner of Public Works 9

10 City of Boston Conducted analysis with a focus on minimizing i i i the potential ti of stray voltage Voltage as a result of damage, vandalism, natural deterioration etc.. Recommended: a) Find it Fix it b) See it Report it c) Enforcement and Monitoring Measures 10

11 Feb 2007 A pedestrian received a shock while walking on a sidewalk in a downtown area in the Niagara area Underground streetlight tli cable fault energized the sidewalk 11

12 Streetlight was owned by the city Maintained by the local Hydro Generation Streetlight was not grounded and not installed accordance to the OESC 12

13 Feb 2007 A pedestrian received a shock while walking his dog on the sidewalk, he was touching the metal barrier of the bridge at the time Faulted underground connection energized the sidewalk beneath him Snow and salt was present 13

14 June 2007 A 9 year old girl and mother received an electric shock while touching the streetlight pole grass was wet Outer connection was done with electrical tape and was tape was still in good condition Current leaked through the tape No grounding & no overcurrent protection 14

15 Fall 2008 A woman reported to the Fire Department she had received a shock when touching the streetlight tli pole 15

16 Nov 2008 A german sheppard was electrocuted when he stepped on a slushy sidewalk The sidewalk had been energized by the deteriorated taped connection in the handwell below the concrete 16

17 Jan 2009 A labradoodle was electrocuted when he stepped on a handwell with taped deteriorated connection. Sidewalk was snowy and salty Dog owner received a shock when rescuing the dog Location o of the incident was in close proximity to the incident where the woman received a shock (fall 2008) 17

18 Jan 2009 A woman walking her two dogs downtown One dog received a shock after stepping on a handwell Repair crew found the pole enerrgized Pole was BIA owned 18

19 Jan 2009 Five Grade 4& 5 student received shock when walking back to school Sidewalk was snowy, feet were wet One student was standing on a handwell Handwell was filled with concrete, lid was damaged and missing a bolt 19

20 Jan 2010 Danforth Dog shock Owner also got shock 20

21 ConEd NY NY State t regulation Mandates scanning of contact voltage present Reporting 21

22 Anatomy of an Incident Incidents are seldom the result of one event usually takes 3 things to go wrong Latent conditions contribute to most incidents, not just what happened 5 minutes prior to the incident The more the barrier, the more difficult it is to have the incident to occur 22

23 Latent failures SLSs were originally utility owned, no need to conform with the OESC (till 2003) There was no repair and build standard for SLS connection all were based on best practice Low number of public complaints strengthen the rationale for not requiring 3 rd party inspection SLSs changed owners led to more variation to installation practices 23

24 Latent failures Handwells are susceptible sceptible to water submersion lower grade than the sidewalk, salt & water solution are excellent conductors Termination method used in handwells does not take into account deterioration of the insulation of the splice Old installation did not take into account grounding or bonding & overcurrent device 24

25 IEC Effects of Current on Human beings and Livestock Touch Impedance Touch Electro-physiological o og ca Voltage V hands-feet ZT Ω Current IT ma effects for a duration of current flow t = 10 ms to 30 ms 100 (dry) Short jerk-like sensation 25(Dry) Might cause sensation for the person shock with strong involuntary muscular (saltwater) reactions far above the threshold of letgo occurs. 25

26 Active failure Maintenance was mostly based on reactive e as opposed to pro-active Salt is used prevalently in Ontario Infrastructure is aging Maintenance priority it was always to ensure traffic and streetlights were always working Like for like repair continued using unapproved termination methods 26

27 Repair of the SLS did not trigger risk priority process to prevent recurrence In two cases, incidents occurred within close proximity of each other There was lack of communication i between the emergency and maintenance crew 27

28 Judgment of Needs Install new SLS according to the requirements of the OESC, regardless who is performing the installation When possible, repair existing SLS so that electrical fault can be prevented. Maintain SLS infrastructure using proactive approach Repair existing SLS to accepted requirements of the OESC Revise public safety priority risk that includes assessment of repairs so that recurrence can be minimized 28

29 Summary Connection below grade are most vulnerable to degradation and breakdown in the insulation system The key priority is to repair connection below grade in SLS systems in methods prescribed in the OESC. Create a response priority to incidents and repair so that SLS owner can better anticipate factors that would jeopardize public safety. Use most of the recommendation from the City of Boston involve as many people as you can & develop a maintenance program to reduce electrical l faults 29

30 Summary of Ontario Incidents Since January 2007, nine incidents involving street lights, Six of the nine incidents involved dogs. Five involved a member of the public receiving a minor shock. 30

31 Why Are We Here? 31

32 Agenda 9:00 AM ADMINISTRATIVE ITEMS Chair of Working Group 9:30 AM ONGOING ISSUES Present and examine ongoing issues associated with Street Lighting Assets Installation, operation and maintenance of Street Lighting Assets Working Group Terms of Reference 10:30 AM STANDARDS AND GUIDELINES Existing relevant Standards and Guidelines 11:30 AM NEXT STEPS Determine next steps Establish future meeting dates 32

33 Why are we here? Development of standards for Street Light assets installation Operation and maintenance Review standards that have been developed by the previous Municipal Electrical Utility Association (MEUA) as well as existing standards from different municipalities, local distribution companies and engineering g standards. 33

34 There were a number of occurrences Members of the public and/or their pets were not protected from electrical faults while walking near street poles and along sidewalks. This has raised a number of public safety concerns for ESA. 34

35 It is the municipalities responsibility under the Ontario Electrical Safety Code (OESC) to maintain their street lighting assets (e.g. poles, hand wells) Inspect for any potential hazards (presence of voltage) that may result in a member of the public being shocked or otherwise injured. 35

36 ESA recommends that given the number of reported incidents, all municipalities examine their street lighting assets to ensure they are safe. If a potential electrical hazard is identified, the municipality has a responsibility to set out a remedial plan of action to address the hazards identified. Any repairs undertaken to installations are required to be made in accordance with the OESC and are required to be inspected by ESA. 36

37 Terms of reference Scope of committee 37

38 Agenda 9:00 AM ADMINISTRATIVE ITEMS Chair of Working Group 9:30 AM ONGOING ISSUES Present and examine ongoing issues associated with Street Lighting Assets Installation, operation and maintenance of Street Lighting Assets Working Group Terms of Reference 10:30 AM STANDARDS AND GUIDELINES Existing relevant Standards and Guidelines 11:30 AM NEXT STEPS Determine next steps Establish future meeting dates 38

39 Scope (1) This Section applies to 2009 OESC (a) installations of primary and secondary lines except for lines owned by a supply authority; (b) poles and pole-mounted electrical equipment; 39

40 Roadway lighting systems Section 75 (1) Roadway lighting systems shall be installed in accordance with Rule 2-024(3) and drules to , except that t Rule (1) need not apply. (2) In-line fuseholders shall be acceptable to satisfy the requirements of Rules and , for single luminaires fed from overhead distribution systems where a dedicated roadway lighting bus is not available. 40

41 Bulletin Approval of equipment Service equipment requirements Low voltage surge protective devices Voltage drop on roadway lighting circuits Receptacles for decorative roadway lighting 41

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44 Agenda 9:00 AM ADMINISTRATIVE ITEMS Chair of Working Group 9:30 AM ONGOING ISSUES Present and examine ongoing issues associated with Street Lighting Assets Installation, operation and maintenance of Street Lighting Assets Working Group Terms of Reference 10:30 AM STANDARDS AND GUIDELINES Existing relevant Standards and Guidelines 11:30 AM NEXT STEPS Determine next steps Establish future meeting dates 44