Difference between revisions of "ESR Turbine"
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== Action Items == | == Action Items == | ||
| − | # investigate bearing gas process at ESR | + | # investigate bearing gas process at ESR// T2 uses bearing gas upon start up. T1 uses no bearing gas. |
| − | # Verify LVDT on turbine inlet valve | + | # Verify LVDT on turbine inlet valve// Can we do this during the T2 warm up? |
| − | # Warm T2. Schedule. Dependent on transfer line. | + | # Warm T2. Schedule. Dependent on transfer line. // Transfer line is available |
# Check seating force of T2 inlet valve (require trip?) (verify proper operation) | # Check seating force of T2 inlet valve (require trip?) (verify proper operation) | ||
| − | # Can T2 be isolated to support troubleshooting without damaging turbine or stopping entire CBX? | + | # Can T2 be isolated to support troubleshooting without damaging turbine or stopping entire CBX? //Possibly during warm up? |
# Develop plan to isolate CBX in the event T2 must be stopped, and/or CBX must be tripped. | # Develop plan to isolate CBX in the event T2 must be stopped, and/or CBX must be tripped. | ||
| − | # Verify that we have a spare. | + | # Verify that we have a spare.//we have a spare for each ESR turbine |
# What is required to check seating force (operationally)? | # What is required to check seating force (operationally)? | ||
# Create an alarm that will alert us when turbine inlet valves are closed and turbine speed is > 0. | # Create an alarm that will alert us when turbine inlet valves are closed and turbine speed is > 0. | ||
| − | # drink a beer | + | # drink a beer/ complete. will perform again 1/23 |
| − | # Get the transfer line from CHL operational | + | # Get the transfer line from CHL operational// done. |
| − | # follow-up meeting ~1/20/2017. | + | # follow-up meeting ~1/20/2017. // 1/23 |
| − | # Contact Pete to begin information/data collection, vendors, contacts. | + | # Contact Pete to begin information/data collection, vendors, contacts.//went through Nussair and it is believed to be the information we needed. |
# Is there an IA isolation valve that can be used so the IA solenoid valve can be replaced? | # Is there an IA isolation valve that can be used so the IA solenoid valve can be replaced? | ||
# Do we have a replacement solenoid valve for the IA to the inlet valve solenoid? | # Do we have a replacement solenoid valve for the IA to the inlet valve solenoid? | ||
Revision as of 14:13, 23 January 2017
Attendance
J. Creel K. Dixon M. Wright R. Norton D. Schleeper S. Radovic
Issue Statement
- When T2 at ESR trips off, the turbine continues to spin much longer than expected. There is a concern that the turbine will be damaged if it does not stop spinning when the inlet valve is closed. On a few occasions, the turbine continued to spin (~500Hz) until the the plant was re-started.
File:ESR T2 Trip (Jan 8, 2017).pdf
https://logbooks.jlab.org/entry/3449986
Agenda and Notes
1. What do we need to do to fix this problem.
-Several things can be done to correct the issue. The least impact (from an operational view) would be to isolate and warm up the turbine temporarily.
2. Is this really a problem (I think that this is a big problem)
-Absolutely. The bearing gas system isn't yet fully understood. Regardless, a turbine spinning when bearing gas is not active would certainly wear the turbine.
3. Why do we think this is a problem (Is bearing gas on during that time)
-See above.
4. Should we be doing something manually?
-For long outages, consider closing the manual valve on the T2 outlet.
5. Other questions that we need to make sure we have answered.
Action Items
- investigate bearing gas process at ESR// T2 uses bearing gas upon start up. T1 uses no bearing gas.
- Verify LVDT on turbine inlet valve// Can we do this during the T2 warm up?
- Warm T2. Schedule. Dependent on transfer line. // Transfer line is available
- Check seating force of T2 inlet valve (require trip?) (verify proper operation)
- Can T2 be isolated to support troubleshooting without damaging turbine or stopping entire CBX? //Possibly during warm up?
- Develop plan to isolate CBX in the event T2 must be stopped, and/or CBX must be tripped.
- Verify that we have a spare.//we have a spare for each ESR turbine
- What is required to check seating force (operationally)?
- Create an alarm that will alert us when turbine inlet valves are closed and turbine speed is > 0.
- drink a beer/ complete. will perform again 1/23
- Get the transfer line from CHL operational// done.
- follow-up meeting ~1/20/2017. // 1/23
- Contact Pete to begin information/data collection, vendors, contacts.//went through Nussair and it is believed to be the information we needed.
- Is there an IA isolation valve that can be used so the IA solenoid valve can be replaced?
- Do we have a replacement solenoid valve for the IA to the inlet valve solenoid?
