33
Maintenance or Test
Recommended Interval
Reference
Fault/load study and
recalculate settings
recalculate settings
5 years
Reclamation
Recommended Practice
Recommended Practice
Electro-mechanical relays
Calibration and functional
testing
Calibration and functional
testing
Upon commissioning and every
2 years
2 years
Reclamation
Recommended Practice
Recommended Practice
Solid-state relays
Calibration and functional
testing
Calibration and functional
testing
Upon commissioning
1 year after commissioning
5 years
1 year after commissioning
5 years
Reclamation
Recommended Practice
Recommended Practice
Micro-processor relays
Calibration and functional
testing
Calibration and functional
testing
Upon commissioning
1 year after commissioning
8-10 years
1 year after commissioning
8-10 years
Reclamation
Recommended Practice
Recommended Practice
Protection circuit functional
test
test
Annually
FIST Volume 3-8
Manufacturer's
Instruction Books
Manufacturer's
Instruction Books
Check red light lit for lockout
relay and circuit breaker coil
continuity
relay and circuit breaker coil
continuity
Daily
1
Reclamation
Recommended Practice
Recommended Practice
Lockout relays
Cleaning and lubrication
Cleaning and lubrication
5 years
Power Equipment Bulletin
No. 6
No. 6
1
In staffed plants, in conjunction with daily operator control board checks. Otherwise, check each
visit to the plant.
Supervisory Control and Data Acquisition (SCADA) systems are computer-based, real-
time control systems for power and water operations. Since these systems are in
operation continuously and are in many ways self-diagnosing, regular maintenance
and testing is not necessary except as recommended by the manufacturer. However,
circuits that are infrequently used may require periodic functional testing to ensure
they will be operational when the need arises.
time control systems for power and water operations. Since these systems are in
operation continuously and are in many ways self-diagnosing, regular maintenance
and testing is not necessary except as recommended by the manufacturer. However,
circuits that are infrequently used may require periodic functional testing to ensure
they will be operational when the need arises.
Security requirements affecting SCADA are dictated by documents such as
Presidential Decision Directive 63: Critical Infrastructure Protection, May 22, 1998
and Office of Management and Budget (OMB) Circular A-130, Appendix III, Security
of Federal Automated Resources, February 8, 1996. Periodic audits, Critical
Infrastructure Protection Plans (CIPP), and regularly scheduled security training are
important requirements of SCADA security.
Presidential Decision Directive 63: Critical Infrastructure Protection, May 22, 1998
and Office of Management and Budget (OMB) Circular A-130, Appendix III, Security
of Federal Automated Resources, February 8, 1996. Periodic audits, Critical
Infrastructure Protection Plans (CIPP), and regularly scheduled security training are
important requirements of SCADA security.