Relay Resetting

Question 1

What responsibilities does the operator have when investigating and resetting tripped relays?

Answer 1

investigate tripped relay

report related indications to control room

reset tripped relay targets and/or 86 lockout with CRS permission

write CR for root cause of failure

perform independent verification

Question 2

What is the minimum information required for a CR?

Answer 2

Date/time of relay operation

breakers and loads affected

operational activities concurrent to the relay operation

Question 3

What must be done prior to physically resetting an 86 lockout relay?

Answer 3

reset all tripped relay targets

Question 4

What are the two things that shouldn’t be done while resetting an 86 lockout relay?

Answer 4

forcing the handle in the latching position

holding the handle after resetting

Question 5

What 86 lockout relays require an independent verification after resetting?

Answer 5

all class and 4160v 86 lock out relays

Question 6

DO generator differential lock out relays require independent verification?

Answer 6

yes

Question 7

What generator lock out relays are reset by AO’s?

Answer 7

diesel generator lockout relays

station blackout lockout relays