Transcript Slide 1

Everyone is aware that the purpose of maintenance is ?
EXTEND EQUIPMENT
LIFE
REDUCE SERVICE
INTERUPTIONS
IMPROVE SYSTEM
RELIABILITY
PAY ME
NOW
$
PAY ME
LATER
$$$$
What is Your Maintenance Direction ?
Pro Active (pay me now)
Reactive (pay me later)
Planning
Training
Project Control
Test & Evaluate
Design Control
Quality Control
Maintenance Control
Scrap
Rebuilding
Expediting
Excessive Inventory
Warranty Services
Complaint Mediation
Product Recalls
Pro Active (Pay Me Now)
3 to 5 % in additional
Project costs
Reactive (Pay Me Later)
12 to 20 % in additional
Project costs
PREVENTIVE
MAINTENANCE
SCHEDULED
MAINTENANCE
PREDICITIVE
MAINTANCE
EMERGENCY
MAINTENANCE
TYPICAL MAINTENANCE TYPES
Preventive Maintenance
Restoration of an un-failed device to
arrest, reduce, or eliminate deterioration
Scheduled Maintenance
Maintenance carried out at regular
intervals (rigid schedule)
Predictive Maintenance
Maintenance directed by inspections,
tests and condition monitoring
Emergency Maintenance
Maintenance requiring immediate
attention after monitoring detects an
imminent failure
PREVENTIVE
MAINTENANCE
SCHEDULED
MAINTENANCE
PREDICITIVE
MAINTANCE
EMERGENCY
MAINTENANCE
So what most of us call our
Preventive Maintenance Program
is actually Scheduled - Predictive
Maintenance with the occasional
Emergency Maintenance
project encountered to
maintain balance in
the program
Major Underground Department is comprised of several
thousand Customer Work Centers with even more miles of
Feeder Circuits connecting them.
The Customer Work Centers are placed into 3 groups
Padmount
Vault
Network
Transformer with fusing
Transformers with
manual transfer
Network Subway
Transformer with a
manual switch
Transformers with motor
switch transfer
Network Radial
Transformer with a
switch & breaker
Transformers with 2
breaker auto transfer
Network 208
Transformer with a pole
recloser
Transformers with 3
breaker auto transfer
High-Side Spot Network
The Cable Feeders are placed into two groups
Substation Feeders
Getaways / Dips
T - Structures
Terminal Poles
Manholes
Manholes
Feeder Cables
Feeder Cables
Work Center attachments are also grouped
Vault Attachments
Manhole Attachments
Ventilation Fans
Sump Pumps
Louvers
Manhole Castings
Fire Doors
Cable Racks
Lighting
Lighting & Ventilation
Equipment is then grouped by Customer Work Center Types
Padmount
Padmount
Transformer
Padmount
Breaker
Padmount
Switch
Terminal
Pole
Vault
Vault
Transformer
Vault
Breaker
Protective
Relay Panel
Ventilation
Doors &
louvers
Subway
Subway
Transformer
Subway
Protector
Sump Pump
Cable
Termination
&
Accessories
Maintenance Criteria is then established for each piece of
equipment
 Manufacturer maintenance recommendations
 Customer Work Center priorities
 Hospitals, Large commercial & industrial facilities
 Progressive aging of the in service products
 Monitoring of in service operations
 Environmental hazards
 Heat, Dust, Flooding, Lightning, etc.
Each piece of equipment is evaluated and assigned
Maintenance criteria for input into SAP (administrative software)
 Customer service arrangement
 Vault, Padmount, Manual, Auto or Network
 Crew makeup to perform the maintenance
 Majority performed with 2 man crew
 Man-hours required to complete the project
 Frequency of maintenance
 Monthly, Semi-Annual, Annually
The basic Maintenance program of Inspections and Testing is now established
• VAULT
INSPECTION • PADMOUNT
• MANHOLE
TESTING
• VAULT
• PADMOUNT
Varying frequencies of Inspection:
6mth, 1 yr, 2 yrs, 3 yrs, 5 yrs, 10 yrs
Varying frequencies of Testing:
1 yr, 2 yrs, 3 yrs, 5 yrs
Circuit
Switching
Customer
Outages
Trouble
Restoration
MAINTENANCE
PROGRAM
Remote
Monitoring
SPCC
Oil Survey
Battery
Maintenance
Outside influences provide input for change to the Major
Underground Maintenance program
Remote monitoring of in service equipment provides invaluable information
for evaluating maintenance controls
Monitoring also provides constant operation and load data as well as
environmental temperature and water sensing which affect changes to
maintenance program.
Other influences affecting the evolution
of the Maintenance Program
 Replacement of older high maintenance
customer protection relay panels
Other influences affecting the evolution
of the Maintenance Program
 Replacement of older high maintenance
customer protection relay panels – With lower
maintenance, higher reliability microprocessor
relays
Other influences affecting the evolution
of the Maintenance Program
 Replacement of older high maintenance
customer protection relay panels – With lower
maintenance, higher reliability microprocessor
relays
 Replacement of older high maintenance air
insulated breakers
Other influences affecting the evolution
of the Maintenance Program
 Replacement of older high maintenance
customer protection relay panels – With lower
maintenance, higher reliability microprocessor
relays
 Replacement of older high maintenance air
insulated breakers – With lower maintenance,
higher reliability, dead-front, solid dielectric
breakers.
Other influences affecting the evolution
of the Maintenance Program
 Replacement of older high maintenance
customer protection relay panels – With lower
maintenance, higher reliability microprocessor
relays
 Replacement of older high maintenance air
insulated breakers – With lower maintenance,
higher reliability, dead-front, solid dielectric
breakers.
 Sometimes improving reliability means
adding to the maintenance program – like the
addition of UPS and their associated batteries.
All the data is compiled in the SAP system
 Service type






Equipment type
Inspection or test
Frequency required
Age
Environment
Influences
Resulting in a fixed priority
maintenance schedule that initiates an
order to be executed by field
technicians
- Major Underground field
technicians receive the orders via
their truck docked Mobile Data
system.
- The order is reviewed and
executed
The field technicians
execute the order
- The inspection process,
load / voltage, infrared,
etc. or testing process is
performed
- Results are recorded
and stored in SAP for
future analysis.
Future Objectives
 Make Work Center historical maintenance data accessible
over Mobile Data to field technicians to assist with
maintenance and also trouble analysis
 Create a Dynamic Scheduling System that could incorporate
remote monitoring information, field maintenance data, along
with other influences to establish custom maintenance plans
for all Customer Services
 Objective hurdles are mostly incurred due to software restrictions
Questions ?