South Texas Project Electrical Generating Station Data Warehouse John Owen Sarah Smith
Jan 17, 2018
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!