ML051160123
| ML051160123 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 02/09/2005 |
| From: | Roy D Florida Power & Light Energy Seabrook |
| To: | Conte R NRC/RGN-I/DRS/OSB |
| Conte R | |
| References | |
| 50-443/05-301 50-443/05-301 | |
| Download: ML051160123 (16) | |
Text
COMMENTS ON QUESTIONS, MADE DURING EXAM ADMINISTRATION
Question 11 Which of the following groups of initial conditions, assumptions, and failures were used in the Seabrook Steam Generator Tube Rupture Chapter 15 UFSAR Accident Analysis, resulting in the MOST SEVERE magnitude of radiological release?
RCS= Reactor Coolant System S/G= Steam Generator EFW= Emergency Feedwater Flow ASDV= Atmospheric Steam Dump Relief Valve RCS PRESSURE S/G LEVEL EFW FLOW ASDV FAILS A. HIGH HIGH MAXIMUM OPEN B. HIGH LOW MINIMUM OPEN
Question 14 The following plant conditions exist:
0 The plant is operating at 100% power.
0 Following a crew brief, Technical Specification action statements have been entered to transfer 125 VDC Bus 11A to its normal battery supply in accordance with OS1048.13, Vital Bus 11A Operation.
0 Due to a human performance error, the Nuclear Systems Operator missed several procedure steps and failed to note that battery charger (1-EDE-BC- 1A) was NOT connected to DC Bus 11A.
The alternate battery supply breaker was then opened.
Given these conditions what operational implications are a direct result of these actions?
R A. Loss of Turbine Trip Control.
B. Loss of Normal Feedwater Control.
C. Loss of Emergency Diesel Generator Stop Capability.
D. Loss of Pressurizer Power Operated Block Valve Control.
Question 17 Given the following plant conditions and sequence of events:
A Loss of Secondary Heat Sink has occurred.
0 Reactor Coolant System (RCS) pressure is 1200 psig.
0 Bleed and feed has been established with all Emergency Core Cooling System pumps in service and both Pressurizer Operateeelief Valves (PORVs) open.
0 Reactor Coolant Pumps are NOT running.
0 Wide range levels are < 5% in all steam generators.
0 RCS hot leg temperatures on all loops are 560 F and slowly dropping.
0 The crew is about to re-establish feedwater flow to the D steam generator.
Based on these conditions, which of the following describes the flow rate that should be established to the D steam generator and the reason for the flow rate?
A. Feed at the maximum rate to mitigate the potential for core damage.
B. Feed at the minimum rate to minimize thermal stress on steam generator components.
C. Feed at the maximum rate to depressurize the RCS and facilitate accumulator injection.
D. Feed at the minimum rate to minimize RCS cooldown rate and RCS pressurized thermal shock.
Question 64 Given the following list of ProcessEffluent Radiation Monitors:
- 1. R-6509, Waste Test Tank Discharge Monitor.
- 2. R-65 14, Waste Liquid Test Tank Inlet Monitor.
- 3. R-6505, Condenser Air Evacuation Discharge Monitor.
- 4. R-65 19, Steam Generator Blowdown Flash Tank Discharge Monitor.
- 5. R-65 16, Primary Component Cooling Water Loop A Activity Monitor.
An automatic system isolation will occur in response to a loss of power to which of the above radiation monitor combinations?
A. 1 and 5.
B. 2 a n d 3 .
C. 2 and4.
D. 3 and5.
Question 98 The following plant conditions exist:
A General Emergency has been declared.
The Wide Range Gas Monitor (WRGM) is in HIGH Alarm.
Upper wind direction indicates 45 degrees.
Offsite Dose Calculation determines PAR Group A is applicable only.
Based ONLY on these conditions and using the Emergency Response Manual (ER-1.2D/G), which one of the following is the correct action to guard against personnel exposure?
Schiller Station Activation State Recommendation A. REQUIRED Evacuate 2 mile radius and 5 miles downwind-Shelter all others.
B. NOTREQUIRED Evacuate 2 mile radius and 5 miles downwind-Shelter all others.
C. REQUIRED Evacuate 5 mile radius and 10 miles downwind-Shelter all others.
D. NOTREQUIRED Evacuate 5 mile radius and 10 miles downwind-Shelter all others.
FPL Energy Seabrook Station SEABROOK STATION 2005 NRC EXAMINATION Exam Analysis Sheets
2003-05 Seabrook Station NRC Written Exam Justification for Answer Key Change and Regrade Following initial exam grading, Seabrook training staff conducted an independent analysis of questions that 50% or more of the candidates answered incorrectly. Eight questions were reviewed. Question 47 was found to contain a technical error as described below. All other questions reviewed were found to be technically accurate and properly structured.
Question 47 Nine out of ten candidates answered incorrectly. Eight of those nine chose the C distractor, which is not correct because an 86UB actuation will trip the generator breaker resulting in a turbine and reactor trip. Thus entry into E-0 is required eliminating distractors C & D. The question work sheet states that B is the correct answer because an 86UB actuation will not only trip the associated UAT breakers but will also prevent auto transfer of the buses to the RAT supply. Tom Manning of plant electrical engineering was consulted to confirm that auto transfer to the RAT supply is not prevented by an 86UB actuation. Therefore the correct answer to this question is A.
The ES-401 worksheet for question 47 references the 13.8kV Detailed System Text and L80121, the 13.8kV Lesson Guide. Neither of these references indicates that auto transfer to the RAT supplies is blocked by an 86UB actuation.
Recommendations
- 1. Correct question 47 worksheet (Form ES-401-5)
Correct Proposed Answer from B to A Correct Explanation of Answer, last sentence to The 86UB device will not prevent transfer from the UAT to the RAT backup supply of power, so therefore Bus 1, 3, and 5 will remain energized.
Add Technical References 309742 sheet 8 Protective Relaying Schematic UAT 1X-2A Backup
. Relaying.
Video Alarm Response Procedure D6455 Response to UAT 2A PROT SYS 2 TRIP & LOCK OUT Correct Explanation of Distractors first line to B - incorrect because transfer to RAT supplies will occur. E-0 is correct procedural reference.
- 2. Correct answer key for question 47. Correct answer is A
- 3. Regrade question 47 for all candidates.
- 4. Submit Condition Reports (TDRs) to evaluate potential LOlT program weakness where indicated by Training Supervisor Review and Approval Date a-7-05
2003-05 Seabrook Station NRC Written Exam Analysis The following questions required review as 50% or more of the candidates answered incorrectly:
Question 19 Six out of ten candidates answered incorrectly. Five of those six chose the A distractor, recognizing that following the rod drop Tavg would be lower. Apparently, however, they failed to consider the decrease in steam pressure associated with the lower Tavg. The question is technically accurate and properly structured. Submitted CR 05-01589 to address this as a potential LOlT program weakness.
Question 42 Five out of ten candidates answered incorrectly. Four of those five chose the B distractor, recognizing that a single train of CBS will limit containment pressure to design values. The B distractor is incorrect because the indicated CBS-P-SA discharge pressure is too low to deliver flow to the spray header. The question is technically accurate and properly structured. Submitted CR 05-01591 to address this as a potential LOlT program weakness.
Question 47 Nine out of ten candidates answered incorrectly. Eight of those nine chose the C distractor, which is not correct because an 86UB actuation will trip the generator breaker resulting in a turbine and reactor trip. Thus entry into E-0 is required eliminating distractors C & D. The question work sheet states that B is the correct answer because an 86UB actuation will not only trip the associated UAT breakers but will also prevent auto transfer of the buses to the RAT supply. Tom Manning of plant electrical engineering was consulted to confirm that auto transfer to the RAT supply is not prevented by an 86UB actuation. Submitted CR 05-01592 to address this as a potential LOIT program weakness.
Question 58 Five out of ten candidates answered incorrectly. All five of those chose the D distractor. FR-C.l requires that the operator continue to start available RCPs until CETCs are 1IOOF (not 750F per distractor D). The question is technically correct and properly structured. Submitted CR 05-01593 to address this as a potential LOlT program weakness.
Question 59 Six out of ten candidates answered incorrectly. All six of those chose the D distractor, recognizing the power to the hydrogen recombiners must be safety related. The correct answer however is an MCC not a Unit Substation (per distractor D). The question is technically correct and properly structured. Submitted CR 05-01595 to address this as a potential LOlT program weakness.
Question 82 Two out of four candidates answered incorrectly. Both of those chose distractor C. The action specified by this distractor is plausible but is not directed per the specified AOP.
The question is technically correct and properly structured. Submitted CR 05-01596 to address this as a potential LOlT program weakness.
Question 90 Two out of four candidates answered incorrectly. Both of those chose distractor B. The action specified by this distractor is plausible but is not in accord with the specified MPE. The question is technically correct and properly structured. Submitted CR 05-01597 to address this as a potential LOIT program weakness.
Question 100 Three out of four candidates answered incorrectly. All three chose distractor C. This distractor would be correct for State notifications but not for NRC notifications. The question is technically correct and properly structured. Submitted CR 05-01599 to address this as a potential LOlT program weakness.
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Standard Item Analysis Report On Exam20 Version A Course #: 2003-05 LOIT Instructor: Ed M o m
'wrse
Title:
2003-05 LOIT
Description:
.- 4yiTime: Tedear:
Total Possible Points: 75.00 Median Score: 66.50 Highest Score: 69.00 Student in this group: 6 Meanscore: 66.50 Lowest Score: 64.00 Standard Deviation: 1.71 Reliability Coefficient (KR20): 0.00 Correct Group Responses point Correct Response Frequencies -
- indicates correct answer Non No. Total Upper 27% Lower 27% Biserial Answer A B C D Distractor 1 83.33% 100.00% 100.00% 0.13 B 0 ' 5 1 0 AD 2 83.33% 100.00% 50.00% 0.65 A " 5 0 0 1 BC D I 01 01 01 '61 1 I I I I IABC I 4 100.00% 100.00% 100.00% 0.00 A ' 6 0 0 0 5 100.00% 100.00% 100.00% 0.00 A ' 6 0 0 0 6 100.00% 100.00% 100.00% 0.00 A ' 6 0 0 0 BCD I 7 100.00%1 100.00% I 100.00% I 0.00 I A I *61 01 01 01 I I I I I 8 100.00% 0.00 C 0 0 ' 6 0 9 100.00% -0.13 B 1 ' 5 0 0 10 100.00% 0.00 B 0 ' 6 0 0 ACD I Ill I 83.33%1 50.00% 100.00% -0.39 B 1 ' 5 0 0 CD I*
I12 l100.00%1 100.00% 100.00% 0.00 A
- 6 0 0 0 BCD
- Ir 100.00%
100.00%
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0.00%
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0.00 0.88 0.00 B
B C
0 0 ' 3 0
0 6
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AB D 16 100.00% I 0.00 I B I o 17 50.00% I 0.39 I B I 1 18 0.00% 0.83 A '4
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+
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~
22 83.33% 100.00% 100.00% -0.13 B 0 AC I 100.00% -0.41 D 0 2 0 ' 4 AC 100.00% 0.00 B 0 ' 6 0 0 ACD 100.00% -0.13 B 1 ' 5 0 0 CD 28 83.33%1 100.00% 50.00% 0.65 D 0 1 0 ' 5 AC 29 30 31 +
100.00%1 100.00%
100.00%
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0.00 0.00 0.00 A
B B
0 0
6 0
6 6
0 0
0 0
0 0
BCD ACD ACD 1100.00%l 100.00% I 100.00% I 0.00 I C I 01 01 *GI 01 I I I I I IABD I 100.00% 100.00% 100.00% 0.00 B 0 ' 6 0 0 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 83.33% 100.00% 100.00% 0.13 C 1 0 ' 5 0 Page 1 01/31/05
Standard Item Analysis Report On Exam20 Version A Course #: 2003-05 LOIT Instructor: Ed M o m
-0urse
Title:
2003-05 LOIT
Description:
iy/T ime : Tedear:
Total Possible Points: 75.00 Median Score: 66.50 Highest Score: 69.00 Student in this group: 6 Mean Score: 66.50 Lowest Score: 64.00 Standard Deviation: 1.71 Reliability Coefficient (KFUO): 0.00 41 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC 42 50.00% 50.00% 0.00Yo 0.49 D 0 2 1 ' 3 A 43 100.00% 100.00% 100.00% 0.00 B 0 ' 6 0 0 ACD 44 100.00% 100.00% 100.00% 0.00 A 1'6 0 0 0 BCD 45 100.00% 100.00% 100.00% 0.00 A ' 6 0 0 0 BCD 46 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 ABD 47 0.00% 0.00% 0.00% 0.00 A ' 0 1 5 0 AD 48 100.00% 100.00% 100.00% 0.00 B 0
- 6 0 0 ACD 49 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC i=O 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC 83.33% 100.00% 50.00% 0.39 D 0 1 0 ' 5 AC 52 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 AB D 54 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 AB D 55 66.67% 50.00% 100.00% -0.21 C 0 2 ' 4 0 AD 56 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC 57 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 ABD 58 33.33% 50.00% 0.00% 0.21 B 0 ' 2 0 4 AC 59 50.00% 50.00% 0.00% 0.49 A ' 3 0 0 3 BC 60 100.00% 100.00% 100.00% 0.00 A ' 6 0 0 0 BCD I61 IIOO.OOY~~IOO.OOY~I IOO.OOY~ I 0.00I C I 01 01 *GI 01 I I I I I IABD 1 62 83.33% 50.00% 100.00% -0.65 A ' 5 1 0 0 CD 63 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC 165 1100.00%1 100.00% I 100.00% I 0.00 I B I 01 '61 01 01 I I I I I IACD 1 166 1100.00%1 100.00% 1 100.00% I 0.00 I B I 01 '61 01 01 I I I I I IACD 1 67 100.00% 100.00% 100.00% 0.00 C 0 0 ' 6 0 ABD 68 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 6 ABC BD A
C
'5 E'
Standard Item Analysis Report On Exam20 Version A Course #: 2003-05 LOIT Instructor: Ed M o m qurse
Title:
2003-05 LOIT
Description:
- .iy/Time: TedYear:
Total Possible Points: 75.00 Median Score: 66.50 Highest Score: 69.00 Student in this group: 6 Meanscore: 66.50 Lowest Score: 64.00 Standard Deviation: 1.77 Reliability Coeficient (KR20): 0.00 Correct Group Responses point Correct Response Frequencies -
- indicates correct answer Non No. Total Upper 27% Lower 27% Biserial Answer A B C D Distractor 75 100.00% 100.00% 100.00% 0.00 A 6 0 0 0 BCD Page 3 01/31/05
Standard Item Analysis Report On Exam19 Version A SED Course #: 2003-05 LOIT Instructor: Ed M o m
-wrse
Title:
2003-05 LOIT
Description:
.y/Tirne: Tedear:
Total Possible Points: 100.00 Median Score: 87.00 Highest Score: 91 .oo Student in this group: 4 MeanScore: 87.75 Lowest Score: 86.00 Standard Deviation: 2.05 Reliability Coefficient (KR20): 0.00 Correct Group Responses point Correct Response Frequencies -
- indicates correct answer Non No. Total Upper 27% Lower 27% Biserial Answer A B C D Distractor 1 75.00% 100.00% 100.00% 0.49 B 0 ' 3 1 0 AD 2 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 3 1100.00%1 100.00% I 100.00% I 0.00 I D I 01 01 01 '41 I I I I I ~ABC I 4 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 5 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 6 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 7 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 8 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 ABD 9 100.00% 100.00% 100.00% 0.00 0 0 ' 4 0 0 ACD 10 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 11 25.00% 0.00% 0.00% 0.07 B 3 ' 1 0 0 CD 12 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 1-100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD
- 75.00% 100.00% 100.00% -0.07 B 0 ' 3 1 0 AD 15 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 ABD 17 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 18 75.00% 100.00% 100.00% 0.49 A ' 3 0 1 0 BD 19 25.00% 100.00% 0.00% 0.92 B 2 ' 1 0 1 C 20 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 21 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 22 50.00% 100.00% 0.00% 0.37 B 0 ' 2 0 2 AC 23 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 25 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 4 ABC 26 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 27 100.00% 100.00% 100.00% 0.00 B 0
- 4 0 0 ACD 28 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 4 ABC 29 75.00% 100.00% 0.00% 0.49 A ' 3 0 0 1 BC 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 ABD 35 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 36 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 ABD 37 75.00% 100.00% 0.00% 0.49 C 1 0
- 3 0 BD Page 1 01/31/05
Standard Item Analysis Report On Exam19 Version A Course #: 2003-05 LOIT Instructor: Ed M o m
"~urseTitle: 2003-05 LOIT
Description:
ly/Time: Tedear:
~~ ~~~~ ~ ~ ~ ~ ~ ~
Total Possible Points: 100.00 Median Score: 87.00 Highest Score: 91.oo Student in this group: 4 Meanscore: 87.75 Lowest Score: 86.00 Standard Deviation: 2.05 Reliability Coefficient (KR20): 0.00 I 38
+
- 39 No.
Correct Group Responses Total 100.00%
75.00%
100.00%
0.00%
100.00%
100.00%
point Upper 27% Lower 27% Biserial 0.00
-0.92 Correct Answer D
B A
0 Response Frequencies -
- indicates correct answer 0 ' 3 B
0 C
0 ' 4 1
D 0
1$ Distractor 1-40 25.00% 0.00% 0.00% -0.49 D 2 1 0 ' 1 I I I I I I 41 100.00%~ 100.00% 100.00% 0.00 D 0 0 0 ' 4 42 0.00% 0.86 D 0 2 0 ' 2 43 100.00% 0.00 B 0 ' 4 0 0 ACD 44 100.00% 0.00 A ' 4 0 0 0 BCD I
'46
- 100.00%1 100.00% I 100.00% I 0.00 I C l o- C
- 47 25.00% 0.00% 100.00% -0.49 A '1
- C 48 100.00% 100.00% 100.00% 0.00 B 0 *4 49 100.00% 100.00% 100.00% 0.00 D 0 C ABC r.-,
50.00%1 0.00% I 0.00% I -0.37 I D I o 2 AC 75.00% 100.00%
I I52 100.00% 100.00%
53 100.00% 100.00% BCD I 54 100.00% 100.00% ABD I I
55 50.00% 100.00%
56 100.00% 100.00%
~
57 100.00% 100.00% ABD ~~ I 2 1 75.OOYo1 100.00%
25.00% 100.00%
100.00% 100.00%
100.00% 100.00~/0 ABD 62 I 75.00%1 100.00% CD I 63 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 4 64 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 65 75.00% 100.00% 100.00% -0.07 B 0 ' 3 0 1 AC I 166 I 75.00%1 100.00% I 100.00% I 0.49 I B I 01 *3l 01 11 I I I I I IAC I 167 1100.00%1 100.00% I 100.00% I 0.00 I C I 01 01 '41 01 I I I I 1 ~ABD I 68 100.00% 100.00% 100.00% 0.00 D 0 0 0'4 ABC 69 75.00% 100.00% 100.00% -0.07 D 0 0 1 ' 2 AB 70 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 C BCD 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 4 ABC I72 100.00% 100.00% 100.00% 0.00 D 0 0 0
- 4 ABC 73 100.00% 100.00% 100.00% 0.00 A
- 4 0 0 0 BCD 74 100.00% 100.00% 100.00% 0.00 C 0 0 ' 4 0 ABD
Standard Item Analysis Report On Exam19 Version A Course #: 2003-05 LOIT Instructor: Ed M o m
%urse
Title:
2003-05 LOIT
Description:
- -ty/Time: Tedear:
~ ~
Total Possible Points: 100.00 Median Score: 87.00 Highest Score: 91.oo Student in this group: 4 Meanscore: 87.75 Lowest Score: 86.00 Standard Deviation: 2.05 Reliability Coefficient (KR20): 0.00 Correct Group Responses Correct ResDonse Freauencies -
- indicates correct answer Non No. Total I Upper 27%1 Lower 27% Distractor 75 BCD 76 0.00 ABD I I
%q++
77 0.49 A '3 CD
--t-t--
78 100.00% 100.00% 100.00% ACD 79 100.00% 100.00% 100.00% ABC 80 100.00% 100.00% 100.00% 0.00 ABC 182 I 50.00%1 100.00% I 0.00% I 0.86 I D I 01 01 21 *21 I I I I I IAB I 100.00% 100.00% 100.00% 0.00 B 0 '4 0 0 ACD 100.00% 100.00% 100.00% 0.00 A '4 0 0 0 BCD 85 I 100.00% I 100.00% 1 100.00% 0.00 D I 0I
-86 100.00%( 100.00% I 100.00% 0.00 B 0 ' 4 0 0 ACD I
c-0.00 C ABD
- 100.00% 100.00% 100.00% 0 0 ' 4 0 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 100.00% 100.00% 100.00% 0.00 B 0 ' 4 0 0 ACD 91 I100.00~01 100.00% I 100.00% I 0.00 I A I '41 01 01 01 I I BCD 100.00% 100.00% 100.00% 0.00 A ' 4 0 0 0 BCD 75.00% 100.00% 0.00% 0.49 A ' 3 1 0 0 CD 50.00% 0.00% 100.00% -0.37 C 0 2 ' 2 0 AD 0.00 C 0 0 ' 4 0 ABD
-0.92 A ' 3 1 0 0 CD 0.00 C 0 0 ' 4 0 ABD (98 1100.00%1 100.00% I 100.00% I 0.00 I B I 01 '41 01 01 I I I I I IACD 99 100.00% 100.00% 100.00% 0.00 D 0 0 0 ' 4 ABC 100 25.00% 0.00% 100.00% -0.49 A ' 1 0 3 0 BD Page 3 01I31105