Standard Post Trip Actions (SPTAs) Flashcards
The CRS should communicate with the ___ as necessary to concur with the diagnosis. The ___ should communicate with the ___ to discuss the diagnosis.
STA
SM
If boration is required per SPTA Step 2, the operator should borate with at least ___
1 CH Pump hard started
___ to de-energize the CEDM MG set is the only step that should be performed as part of SPTAs to de-energize the CEDM MG set.
Opening the input breakers for L03 and L10…
- Load Centers should be de-energized for at least 5 seconds to ensure that enough time has elapsed to allow effects of MG set flywheel to taper off…thus preventing MG restart (re-energize after the 5 seconds for loads)
Per SPTA step 3, Do not attempt to start the diesel if ___
…any High Priority trip alarm is present
Per SPTA step 3, Do not attempt to close the output breaker if ___
…a fault exists on the vital bus.
Per SPTA step 4, Do not ___ if a SIAS has occurred, until an ORP is entered.
…restore Letdown
Per SPTA step 4, If QSPDS is not available or RCS Pressure is < 350# then use ___
…Appendix 2, Figures
Per SPTA step 5, Check SIAS is initiated by ensuring ___
ESFAS signal has been initiated, sequenced loads are running and HPSI and LPSI are aligned to inject to the RCS
*RO should take manual action to start pumps and open injection valves if the sequenced loads are not in desired state
Per SPTA Step 6, Use QSPDS to obtain sub cooling data (forced circulation use ___, natural circulation use ___)
RCS sub cooling for forced circulation, CET sub cooling for natural circulation
Per SPTA step 7, FW available means that FW can be supplied to a SG when required. And Main Feed on RTO is ___ even if temperature has dropped low enough for RTO to stop feeding the SGs
Acceptable
If an AF pump must be started, then attempt to start ___, ___ or ___ (in order of preference except for LOOP events)
AFN-P01, AFB-P01 or AFA-P01
NBA except when its a LOOP (or AFB is already running for some reason, etc)
Do not attempt to bypass ___ or reset ___ to restore FW until the ORP is entered.
MSIV’s or reset AFA
If AFA-P01 is to be started manually, ensure both ___ are closed before starting the pump. This ensures the ___, preventing an overspeed of the turbine.
Steam admission valves
Speed control circuit is reset before starting the pump
When using SBCS in manual or using ADVs to control Tc, the ___ of the temperature band should be used. Using the ___ will allow a larger margin from the SG safety lift set point.
Lower end of the temperature band
If available, ___ should be used to control Tc.
SBCS should be used (ADVs if not available)
Check MSIS initiated by ensuring ___
- ESFAS signal has been initiated
2. MSIV, MFIV and BD IVs are closed
Tc should be stabilized using the ___
RCS Loop with the lowest Tc
___ may be closed, if needed to reduce heat removal
Turbine drain valves
___ may be shut down to reduce steam load
Main Feed Pumps
Per SPTA Step 9, Opening CTMT IA isolation should be performed as needed to support ___ or to close ___
RCP Operation or to close RCP CBO valves