Northland Civil Defence Emergency Management Plan, 2010

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Table 13: Infrastructure Failure ScenariosFailure Extent Telecomms Electricity Fuel Gas Transport Water/WastewaterAll or nearlytotal loss ofsupply toregionWould need physicaldamage to 3 Auckland toWhangarei fibres which areon different routes (thoughall go through Warkworth) –would probably need to be alarge volcano or earthquake.Small traffic could be carriedthrough Microwave links.Damage to 220kV linefrom Auckland (orsubstations en route)would cause substantialregional loss of supply.Could occur through anumber of scenarios –flooding/slips, volcanicash, earthquake, etc.Refinery shut-down couldcause major supply losswithin days and would taketime to bring in importedfuel. Could be caused bypower outage, fire, tsunamior prolonged road accessdisruption (nitrogen andstaff get brought in by road).Power outage would alsostop delivery – tankerloading.Damage to pipelinefrom Taranaki ormajor productionsources.Could occur througha number ofscenarios –flooding/slips,volcanic ash,earthquake, etc.Major failure of Te HanaOverbridge caused byearthquake or accident.Slips on Brynderwyn Hill(though there arealternate routes via SH12 and Mangawhai).Tsunami at port.Region-wide power outagegreater than a day could causedisruptions to supply across thewhole region. Most watersupplies have treated reservoirstorage with around 1-2 dayssupply and gravity supply tomost of the town. Mostwastewater pump stationshave a few hours storagebefore overflow.Loss of supplyto large areaLoss of major exchanges inKerikeri, Kensington orWhangarei.Restoration time woulddepend on event – flooddamage could be repaired indays, fire damage could takemonths.Sub-station failure –technological, flooding,earthquake, ash, etc.Power outage causing fuelstations in large area to shutdown.Loss of delivery pointat Whangarei.Puhi Puhi Road(Hikurangi North)flooding.Any bridge north ofWaitaki landing failure –caused by storms,earthquake or accident.Flooding at KawaKawaand SH11 stops accessfurther north withlimited alternate access.With the exception ofWhangarei, most town suppliesrely on a single source, somajor damage to the trunkmain, reservoir, TP, etc couldknock out the whole supply. Anumber of scenarios couldcause this – land slips,contaminated spill into sourcewater, fire, dam collapse, etc.Widespreadlocalisedfailures.High winds / rain / slipscausing multiple damage tocell sites, cables, etc.High winds / rain / slipscausing multiple damageto overhead cables (treesfalling, etc).Unlikely.Length of outage couldaffect other areas due tostorage shortage.Unlikely.Storm causing multipleslips/trees across road.Localised floodingCould be caused by widespreadbut localised power outages(eg: storm events)Region-widerestrictions.Overloading, probably inresponse to some form ofemergency. Companies canrestrict various types of use,eg: txt.Generation shortages (eg:due to drought) or majortransmission failures inNorth Island could lead toneed for planned rollingoutages.Fuel restrictions imposedbecause of a major supplychain failure such asdisruption to crude supply,contamination of product.Damage to pipelinefrom Taranaki ormajor productionsources.Extreme highwinds/driving rain thatmake driving conditionshazardous. Restrictionsplaced on motorcycles/high trucks, etc.Region-wide drought couldrestrict multiple supplies,though some are lessvulnerable than others.Northland Civil Defence Emergency Management Plan, 2010-2015 Page 82
HAZARDOUS SUBSTANCE SPILLOverviewHazardLikelihood (D)HazardConsequence(2)Many hazardous substances are stored, transported and to a lesser extentmanufactured in Northland. This creates the potential for an unplanned oruncontrolled release of a hazardous substance resulting in large explosions or toxicgas plumes.In Northland there are three to four minor hazardous substance incidents a monthusually related to fuel spills from vehicles and vessels. In recent years there havebeen more incidents related to the manufacture of methamphetamine in homesacross Northland.Most incidents are dealt with by the Fire Service and Regional Council staff. Ofpotential relevance to CDEM would be a major hazardous substance release. TheMarsden Refinery stores, refines and transports New Zealand’s largest volumes ofhazardous chemicals. A major marine oil spill is another potential incident.Very little data to make an assessment.Social:Depends on the individual substance and incident but could involve loss of lifeand injuries as a result of explosions, inhalation of toxic fumes, consumption of,or contact with poisons. Rapid evacuation of potentially affected areas may benecessary, potentially causing panic and distress.Built-Economic:Short-term interruption to social, economic, emergency service activities due tocompromised access to, and use of areas and facilities.Natural Environment:How do wemanage thisrisk?What moreshould we bedoing?What is thefuture risk?Contamination of structures, soils, water (surface and ground), air (local or morewidespread).Management of hazardous substances includes environmental and hazard audits.Department of labour is responsible for the enforcement of the HSNO Act.A Hazardous Substances Coordinating Committee exists.There is information about the location of hazardous substance in Northland butthe lists are incomplete and not consolidated for the region or mapped.The Environmental Risk Management Authority has plans to develop an onlinedatabase of hazardous substance locations across New Zealand.With the increase in the transportation of bulk fuel, the likelihood of a largeincident will increase. The increased use of roads to transport substances willlikely increase the exposure of communities along those roads to risks of anemergency event.Northland Civil Defence Emergency Management Plan, 2010-2015 Page 83
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PLAN STRUCTURESection1:Introduction
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GLOSSARY OF TERMSCommonly used term
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SUMMARYThe Northland Civil Defence
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1 INTRODUCTIONSection 1 outlines th
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1.3 THE PLAN CONTEXT1.3.1 CORE PRIN
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1.4.1 NORTHLAND CDEM GROUP VISION A
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1.4.3 HOW THIS PLAN SUPPORTS NATION
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Whangarei District population risin
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2.1.3 ECONOMIC ENVIRONMENTPROFILETh
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2.2 CDEM GROUP HAZARDSCAPE2.2.1 ANA
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Figure 12: River Network in Northla
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2.3 HAZARD RISK PRIORITIES2.3.1 THE
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3 RISK REDUCTIONThis section provid
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In 2009, NRC published a review of
Page 32 and 33: 4 READINESSThis section provides an
Page 34 and 35: 4.2 COMMUNITY READINESS4.2.1 AWAREN
Page 36 and 37: 4.3 GROUP READINESS: STAFF CAPACITY
Page 38 and 39: 2. To facilitate communication betw
Page 40 and 41: Other OrganisationPlans(refer Appen
Page 42 and 43: OBJECTIVE 3d:Current Status:Methodo
Page 44 and 45: In terms of effort applied to respo
Page 46 and 47: 5.3 CDEM EMERGENCY OPERATING CENTRE
Page 48 and 49: Welfare Centres can also be set up
Page 50 and 51: Table 9: Specific Response Issues a
Page 52 and 53: audience. The information it provid
Page 54 and 55: 6 RECOVERYThis section sets out the
Page 56 and 57: The role of the Group Recovery Mana
Page 58 and 59: 7 MONITORING AND EVALUATIONThis sec
Page 60 and 61: CommunityEducation /ParticipationCD
Page 62 and 63: 8 MANAGEMENT AND GOVERNANCEThis sec
Page 64 and 65: The functions of the Group are deta
Page 66 and 67: 8.3.3 WORK PROGRAMMESAn annual work
Page 68 and 69: During a declared emergency (Level
Page 70 and 71: APPENDIX A - ORGANISATIONS WITH A K
Page 72 and 73: APPENDIX B - HAZARD SUMMARIESThe re
Page 74 and 75: WIDESPREAD HEAVY STORMSOverviewHaza
Page 76 and 77: VOLCANOOverviewHazardLikelihood (E)
Page 78 and 79: Figure 20: Historical Earthquake Lo
Page 80 and 81: DROUGHTSOverviewA drought can be de
Page 84 and 85: MAJOR TRANSPORT ACCIDENTOverviewHaz
Page 86: ANIMAL / PLANT DISEASE AND PESTSOve
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Northland Civil Defence Emergency Management Plan, 2010

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