ML23150A164
| ML23150A164 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 12/08/2022 |
| From: | NRC/RGN-III/DORS/OB |
| To: | Constellation Energy Generation |
| Bruce Bartlett | |
| Shared Package | |
| ML19121A198 | List: |
| References | |
| Download: ML23150A164 (1) | |
Text
Form 4.1-1 Record of Rejected Knowledge and Abilities Refer to Examination Standard (ES)-4.2, Developing Written Examinations, Section B.3, for deviations from the approved written examination outline.
Tier/Group Randomly Selected K/A Reason for Rejection 1 / 1 Q81 W E05 EA2.06 Ability to determine and/or interpret the following as they apply to Loss of Secondary Heat Sink:
RCS delta T Importance Factor: 3.1 / 3.6 The 1BFR-H.1 reference to RCS T is in an informational note prior to step 2 to remind the plant staff of the difference between the indications for loss of heat sink and natural circulation only. Loss of heat sink is indicated by reduced loop T in conjunction with low SG level, as loss of heat transfer causes RCS temperature and pressure to rise. The FR-H.1 WOG bases document recommends that Bleed and feed should NOT be initiated if the RCS pressure rise is from natural circulation only. However, the Byron specific FR-H.1 criteria for initiating Bleed and Feed criteria is low SG level ONLY.
Therefore, using the guidance of NUREG 1021, ES-4.2, section B.3, it was not possible to prepare a question at the correct license level related to the subject K/A, request this K/A be rejected.
Randomly Replaced K/A:
W E05 EA2.03 - Loss of Secondary Heat Sink - Ability to determine and/or interpret the following as they apply to the Loss of Secondary Heat Sink: Feed flow to S/Gs 3.9 / 4.3 Use of this KA will maintain exam integrity, point totals and outline balance, being in the same EPE, tier, group and K/A category.
1 / 2 Q83 028 AA2.01 Ability to determine and/or interpret the following as they apply to a Pressurizer Level Control Malfunction:
PZR Level Importance Factor: 4.0 / 3.8 With the DCS (Ovation) modifications to Byron control systems, this malfunction (generally) is no longer a transient event. Additionally, the K/A topic is more aligned with RO knowledge and ability than SRO. The exam author attempted to draft a psychometrically sound question at the SRO level, but was unable to.
Therefore, using the guidance of NUREG 1021, ES-4.2, section B.3, it was not possible to prepare a question at the correct license level related to the subject K/A, request this K/A be rejected.
Randomly Replaced K/A for different unused E/APE:
W E13 EA2.02 - Steam Generator Overpressure - Adherence to appropriate procedures and operation within the limitations of the facilitys license and amendments 3.7 / 3.9 Use of this KA will maintain exam integrity, point totals and outline balance, being in the same tier, group and K/A category.
2/1 Q52 (076) (SF4S SW) SERVICE WATER SYSTEM (191002 K1.04)
SENSORS AND DETECTORS (CFR: 41.7):
Flow-Modes of Failure Licensee stated that the K/A was inadvertently changed from 191002 K1.04 to 191003 K.104. When trying to re-write Q52 to match the Outline the licensee realized that there were no flow sensors in the Service Water System that have operational implications for constructing a license level question.
Therefore, using the guidance of NUREG 1021, ES-4.2, section B.3, request this K/A be rejected and replaced.
Replace the inadvertently changed K/A with the suggested replacement K/A:
191003 K1.04 - Function and operation of pressure and temperature controllers, including pressure and temperature control valves 3.0 Use of this KA will maintain exam integrity, point totals and outline balance, being in the same System, tier, group and K/A category.
2/2 Q93 075 A2.05 Ability to (a) predict the impacts of the following on the Circulating Water System and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those abnormal operations:
Potential damage to condenser from high discharge pressures of circulating water pump Importance Factor: 2.3 / 2.7 High CW pump discharge pressure is not an operationally valid concern at Byron Station. The CW pumps operate at a nominal discharge pressure of 44.6 psig. Byron MCR plant parameter indications and annunciator systems do not monitor for high CW pump discharge pressure as it is not a likely system condition. A likely concern is (the opposite of high discharge pressure) low CW pump DP, or runout conditions, with probable causes of a tripped CW pump with its associated discharge valve open or a single operating CW pump with more than one waterbox in operation.
Therefore, using the guidance of NUREG 1021, ES-4.2, section B.3, it was not possible to prepare a question at the correct license level related to the subject K/A, request this K/A be rejected.
Randomly Replaced K/A:
075 A2.12 - Ability to (a) predict the impacts of the following on the Circulating Water System and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those abnormal operations: Main condenser tube leak 3.5 / 3.3 Use of this KA will maintain exam integrity, point totals and outline balance, being in the same System, tier, group and K/A category.