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Disasterrecovery:Whattodoafterthestorm September1,2017

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Disasterrecovery:Whattodoafterthestorm

Presented byChuck Yung

EASA Senior Technical Support [email protected]

Co-authored byJim Bryan

EASA Technical Support [email protected]

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Theproblem

• Rainfallorstormsurge

• HarveydumpedtwiceasmuchrainfallasKatrina


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Indian Ocean Tsunami (2004)• 230,000 lives

Hurricane Katrina (2005)• $250 billion US• 1,800 lives

Japan Tsunami (2011)• $309 billion US• 18,000 lives

Hurricane Sandy (2012)• $68 billion US• 286 lives

Average hurricane• $7 billion US

Cost,economicandlossoflife

ImpactofhurricanestoTXandLAGulfCoast

• RefiningcapacityoftheUSGulfCoastis28%ofUStotal

• Over400petro-chemicalfacilitiesdirectlyaffected

• Secondaryissues:– Displacedemployees– Supplychaindisrupted– Shipping/bargetraffic– Lackofpower– Lossofpotablewater


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Pre-eventplanning

• Prioritizeequipment– Repair– Replace

• Placeorderlistswithpre-selectedvendors• Leveragevendorstocarryinventory• Newconstruction

– Elevateswitchgearrooms– Storeabovefloodstage


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Prioritizeelectricalequipment

• Standardelectricmotors– ReplacewithPremiumEfficient– Size&criticality

• Localvendors– Alsoaffected– Developsuppliersoutsideaffectedarea

• Switchgear— replaceorrepair– Availability/cost?– Fuses!– Replaceifimmersed

• Formteamsresponsiblefor:– Replacement– Repair

• Coordinateshipping– Repairableequipmenttoout-of-areavendors

• Stageequipmenttobereplacednearby– Forverificationofcorrectreplacement– Maybeobsoleteandrequirerepair– Mayrequireinspectionforinsurance

Emergencyresponseteam


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Temporaryhousing?

• Bargewithmobilehomes• Shippingcontainerasbunkhouse• Cruiseship• Merchantships• Potablewater• Watertreatmentplantsarelikelyinoperable• Shipsaspowersupplier(shiptoshore)• Generatorswillbeinshortsupply

Temporarylivingquarters


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Electricalequipment

• Electricmotors• Generators• Transformers• Switchgear• Fuses• Motorcontrolcenters• Cableruns

Rustcausedbysaltwater

• Saltwaterdamage– Irreversibleifallowedtodry

– Immerseinfreshwater


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Cleaningofelectricmotorsandgenerators

• Fieldexpedientcontainers– Continuouslyflushed

– Freshwater– 5-10liters/minute

Cleaningofelectricmotorsandgenerators

• Bakeovenisthebottleneck• Temporaryovensonsiteoratvendor


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Transformers

• Drytype– Processsameaselectricmotors– Flushifnecessary– Dryinoven

Transformers

• Oil-filledtransformers– Evaluateoilcondition

• Dissolvedgasanalysis• Drainandcirculate

– warm,dryair(80-100C)

• Inspectexternalcoolingtubes

– Forrust– Cleanandrepaint

– Mayonlyneedexteriorcleaning


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Transformers

• Heatsource– Reducedvoltageclosedsecondary– Circulationofhotoil(85°C)throughunit

• Unitsbuiltafterapproximately1965bracedforfullvacuum– Rated200kVorhigher:

• VaporPhasedryingispreferred– 35Torr vacuum– Introducehotfluid(above100°C)– Flushthroughtoabsorbmoisture

Distributiontransformers

• “Coldtrap”isessentiallyastill• Dry=Lessthan40gramswaterin6hours• Additionaltests:

– DCinsulationresistance– PolarizationIndex– Powerfactor


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Electricalcables

• WetLocations– Conductorswith“W”inthe

type• TW• THW• THWN• Etc.

• Conduitlikelytohavewater– Ifburied– Lowpoints

• Directburialcable(UForUSE)– Exposedtosaltwater

• Expectdegradationduetocorrosion

• Drycablesw/drynitrogenpurge

Capitalconsiderations

• Immersioninsaltwater:– Significantlyreduceslifeoflaminatedcores– Electricmotors,generatorsandtransformers

• 5-10yearsremainingservicelife

• Workwithinsuranceprovidersforreplacement/repair

• Futureconstruction/reconstruction– Elevatemotorcontrolcenterandswitchgear– Abovefloodstage


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Conclusions

• Localvendors– Alsowithoutpower– Inundatedwithwork– Expectlongdeliverytimes– Expectotherplantsintheareatocompeteforresources

• Alternatevendors– Atlessconvenientdistancesinland– Awayfromcoastalflooding

Conclusions

• Naturaldisasterscausestrain– Maintenancedepartment– Localresources

• Planahead– Designaterepair/replace– Coordinate&optimizeshipping– Developvendors

• Inventoryequipment• Identifyreplacementavailability


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EASATechnicalSupport

• IfyouareanEASAmemberandneedadditionaltechnicalhelpregardingdisasterrecoveryinvolvingelectricalrotatingequipment,contact:

EASATechnicalSupport+1.314.993.2220

https://www.easa.com/resources/tech_support

disaster recovery: what to do after the storm - easa · pdf filedisaster recovery: what to do...

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