South Texas Project Electrical Generating Station

Data Warehouse

John OwenSarah Smith

Objectives

Create a data warehouse of the from our Corrective Action Program, Master Equipment Database, Procurement Inventory Control System and Work Order systems.

Mine the data to identify hidden patterns that enable STP to reduce maintenance costs.

Facts

The fact of concern is the cost per maintenance activity. Cost of Labor

Total of all craft hours spent on activity Each activity can have many crafts

Cost of Material Total of all parts used Each activity can use many parts

Final Database

WorkOrders

PK,FK1 WanSeqNo

RequestType CraftType Unit StartDate FinishDate OutageIndicator

BuildingCodes

PK,FK1 UNITPK,FK1 BUILDING

DESCRIPTION

CorrectiveMaint

PK CorrectiveID

ConditionNo ActionNo WorkOrder CndCode CndLevel CndType DiscoveryDate CompletionDate

WorkCostFacts

PK WanSeqNoPK,FK1 CorrectiveIDPK,FK4 DateIDPK,FK2 EquipmentIDPK PmIDPK,FK3 StID

LaborCosts MaterialCosts TotalCosts

WorkOrderCrafts

PK,FK1 WorkAuthNumberPK CraftSeqNo

Craft CraftCode ActualMen ActualHours EstCost

SurveillanceTests

PK SuveillanceID

SurveillanceDescription TrainCodeFK1 ModeCode FrequencyCode SuveillanceType

FunctionalGroups

FK1 UnitFK1 SystemFK1 Subsystem DESCRIPTION

ModeCodes

PK MODE_CODE

MODE_DESCRIPTION

Equipment

PK EquipmentID

ServiceDescription TpnsUnitFK1 SystemCode SystemDesc QualityRelated QualityClass PhyicalUnit BuildingCode Room ElectHarsh Train Channel AcctUnit AcctSystem AcctSubSystem AcctGroup Radiation_area ConfinedSpact InstrumentClass ComponentType OpsDeviceType Manufacturer Model MPL

SystemCodes

PK SystemID

Characterization FercAccount FercSubAccount SystemDescription

WorkOrderParts

PK,FK1 WOREQ_WAN_SEQ_NOPK SPPA_PART_NO

PartClass PartDesc PartCost QtyRequested QtyIssued TotalCost

PreventMaint

PK,FK2 PmID

PmYear PmYearSeq ActivityDescFK1 ModeCode PmFrequency

Time

PK DateID

Date DayOfMonth Month Quarter Year DayOfWeek MonthAlpha

RoomCodes

PK,FK1 WMBLDG_UNITPK,FK1 WMBLDG_BUILDINGPK,FK1 ROOM

AREA ELEVATION DESCRIPTION SEISMIC_AREA EQ_HARSH_MILD

Fact Source

65,908 Records.Represents all maintenance activities

between 2002 and 2005 Corrective Maintenance Preventative Maintenance Surveillance Testing

Baby Cube

Question

How much did STP spend of maintenance between January 1, 2002 and Dec 31, 2005?

Baby Cube’s Data

Cube Example

Time

PM Activity

CostFactCraft

Cube for PM Costs

PM Cube’s DataNotice the increased cost of the item in yellow, this is something we would want to investigate

A Cluster

A Decision Tree

The End

So Long and Thanks For All The Fish!