ML25030A197
| ML25030A197 | |
| Person / Time | |
|---|---|
| Site: | Vogtle, 05577392  |
| Issue date: | 01/30/2025 |
| From: | NRC/RGN-II |
| To: | |
| References | |
| ML25030A197 | |
| Download: ML25030A197 (1) | |
Text
Reactor Coolant Pump Operation 13003-1 VOGTLE Version 55.0 Unit 1 Page 19 of 57 4.2.1 Pump Operation With A Seal Abnormality (continued)
Printed 01/22/2023 at 12:28:00 4.
WHEN directed by the SS, THEN Perform an RCP shutdown as follows:
NOTE If RCP Oil Lift Pump is NOT available, shutdown of RCP may still proceed.
CAUTION The Oil Lift pump should NOT be started for any RCP that is being stopped due to loss of thermal barrier cooling.
a.
Start the RCP Oil Lift Pump for affected RCP, if available.
b.
IF Reactor Power is greater than 15% Rated Thermal Power THEN Perform the following:
(1)
Trip the Reactor AND Initiate 19000-1, E-0 Reactor Trip or Safety Injection.
(2)
WHEN the immediate operator actions of 19000-1, E-0 Reactor Trip or Safety Injection are complete, THEN Go to Section 4.2.1 Step 4.d.
c.
IF Reactor Power is less than 15% Rated Thermal Power, THEN Initiate 18005-C, Partial Loss of Flow.
d.
Stop the RCP by Placing the RCP Non-1E Control Switch in STOP AND Placing the RCP 1E Control Switch in STOP:
RCP Non-1E Control Switch 1E Control Switch Loop 1 1-HS-0495B 1-HS-0495A Loop 2 1-HS-0496B 1-HS-0496A Loop 3 1-HS-0497B 1-HS-0497A Loop 4 1-HS-0498B 1-HS-0498A
Transient Response Guidelines NMP-AP-005 SNC Version 3.0 Unit S Page 4 of 24 Printed 03/31/2021 at 13:30:00 1.0 PURPOSE / APPLICABILITY 1.1 PURPOSE This procedure provides guidance and strategies for proper use of Transient Response Procedures (TRPs).
1.2 APPLICABILITY This procedure is applicable to Farley, Hatch, Vogtle 1/2, and Vogtle 3/4.
For Hatch Section 4.4 is not applicable.
Applicability Determinations are not required for Category 2 NMPs, including initial version 1.0. This procedure is exempt from the 10 CFR 50.59c(4) process per NMP-AP-001-001, Review and Approval of Nuclear Management Procedures 2.0 DEFINITIONS 1.
Immediate Operator Actions (IOAs) - actions which must be performed expeditiously by the user without reference to the Transient Response Procedure.
2.
Response Not Obtained (RNO) - Procedure steps that parallel the ACTION/EXPECTED RESPONSE steps and provide operator guidance when the expected plant response specified is not obtained.
3.0 RESPONSIBILITIES None
Transient Response Guidelines NMP-AP-005 SNC Version 3.0 Unit S Page 15 of 24 4.3 TRANSIENT RESPONSE USE (continued)
Printed 03/31/2021 at 13:30:00 11.
Prompt Operator Action (Farley and Vogtle 1&2) a.
There are certain plant transients that require prompt operator action to mitigate the effects. When it is determined that prompt operator action is required, communication will take place indicating action will be taken utilizing the appropriate hardcard. This communication may be included with or in lieu of traditional annunciator response communications.
Verbalization of individual actions is not required. Place-keeping is not required. Upon completion of hardcard actions, or when the transients effects are minimized, the procedure referenced in the hardcard will be entered and actions taken will be verified using the referenced procedure Example communication (for Farley, reference NMP-AP-005-GL03 for Vogtle 1&2):
OATC: SS, the one-alpha charging pump has tripped, taking prompt actions of AOP-sixteen
OATC: SS, prompt actions of AOP-sixteen complete
SS: prompt actions AOP-sixteen complete
OATC: that is correct
Transient Response Guidelines NMP-AP-005 SNC Version 3.0 Unit S Page 10 of 24 4.3 TRANSIENT RESPONSE USE (continued)
Printed 03/31/2021 at 13:30:00 4.
Step Sequence variations are permitted for TRPs include:
a.
Immediate Operator Actions are actions which are:
(1)
First, performed from memory without interruption, or placekeeping requirements.
(2)
Afterwards are ensured using the procedure and place-keeping tools to check successful completion of the actions.
b.
Fold-Out page actions, when they become applicable, are performed without delay upon satisfying the criteria to initiate them, unless otherwise directed by the procedure for which they apply.
c.
Continuously Applicable steps (e.g. WHEN/THEN, monitor, or otherwise marked steps), ONCE encountered become applicable and remain applicable until differing guidance is provided. WHEN the condition of these steps is satisfied, the crew will implement the steps at the earliest opportunity, which does NOT interfere with a critical mitigation strategy.
d.
Early Operator Actions (1)
Operators may take early operator action using site specific direction that mitigate the consequence of the event but do not interfere with recovery strategies.
(2)
The Shift Supervisor will be notified prior to the commencement of early operator actions.
(3)
Unless otherwise permitted to be performed from memory, applicable procedures/steps will be referenced when performing actions out of sequence.
e.
Operators may take early action to initiate ESF functions manually, from memory, before the setpoint is reached or prior to procedural direction to do so as a function of their License.
f.
Refer to 30AC-OPS-013-0; Regardless of the entry condition, the action of the individual guielines must be performed concurrently.
The Shift Supervisor will prioritize the actions within the simultaneously applicable EOP actions based on plant conditions.