ML21246A139

10_STP-2021-07 Post Exam Comments

ML21246A139
Person / Time
Site:	South Texas
Issue date:	07/29/2021
From:	Operations Branch IV
To:	South Texas
References
Download: ML21246A139 (6)

Text

POST-EXAM QUESTION CHALLENGES BY STP LOT 25 NRC WRITTEN EXAM 07/29/2021 STPNOC personnel are not challenging any questions for the LOT 25 NRC Written Exam.

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LOT 25 NRC EXAM ANALYSIS - 07/29/2021 Bank # RO# SRO# ANSWER A B C D Total Missed 2999 1 A 0 3000 2 A 1 1 3001 3 B 1 3 4 3029 4 C 3 3 3002 5 D 2 2 3030 6 C 0 3031 7 B 4 4 3082 8 D 0 3032 9 A 2 1 3 3003 10 C 1 1 2 3033 11 C 3 3 3004 12 C 0 3034 13 B 0 3035 14 C 0 3036 15 A 1 1 3005 16 C 1 2 3 3037 17 D 0 3099 18 B 0 3038 19 C 1 1 3039 20 B 2 2 3040 21 B 0 3116 22 B 1 1 3042 23 B 1 1 3075 24 D 2 2 4 3043 25 A 3 3 3092 26 C 2 2 3044 27 D 0 3045 28 B 3 3 3046 29 D 0 3047 30 C 4 1 5 3048 31 A 6 1 7 3049 32 A 1 1 3050 33 B 1 1 3051 34 D 3 4 7 3006 35 C 0 3007 36 C 3 1 4 3083 37 B 1 1 3096 38 A 0 3052 39 A 5 5 3076 40 D 3 3 3077 41 B 1 1 2 3008 42 C 1 1 Page 1 of 3

LOT 25 NRC EXAM ANALYSIS - 07/29/2021 Bank # RO# SRO# ANSWER A B C D Total Missed 3009 43 A 0 3010 44 C 0 3011 45 A 0 3012 46 B 2 2 3013 47 A 2 1 3 3014 48 D 0 3078 49 A 0 3015 50 C 3 3 3016 51 B 0 3017 52 D 1 1 2 3018 53 D 0 3053 54 B 0 3054 55 A 0 3055 56 C 4 8 12 (75%)

3056 57 D 6 6 3019 58 D 1 1 3079 59 C 1 1 3020 60 A 0 3021 61 C 4 4 3022 62 A 0 3057 63 B 5 5 3080 64 C 1 1 2 3058 65 B 0 3023 66 A 2 2 3059 67 B 0 2883 68 B 0 3061 69 D 4 4 3024 70 B 4 3 7 3062 71 B 1 1 3093 72 C 0 3063 73 B 1 1 3064 74 B 1 1 3065 75 C 1 1 3094 76 A 0 3066 77 D 1 1 3097 78 A 0 3084 79 B 2 2 3025 80 A 2 2 3098 81 A 3 3 3115 82 B 1 1 2 4 3088 83 B 1 2 3 3089 84 D 0 3067 85 C 1 1 3068 86 B 0 Page 2 of 3

LOT 25 NRC EXAM ANALYSIS - 07/29/2021 Bank # RO# SRO# ANSWER A B C D Total Missed 3069 87 A 0 3070 88 D 3 3 3081 89 C 0 3071 90 C 1 1 3026 91 B 2 2 3027 92 C 0 3100 93 B 3 3 3090 94 A 1 1 3095 95 C 0 3072 96 C 2 2 3073 97 D 1 1 2 3074 98 C 1 1 3028 99 A 0 3091 100 A 1 1 2 RO #56 - 4 candidates chose distracter B." 8 candidates chose distracter "D." Correct answer is "C."

This question required the student to know the reason for a ROD CONT URGENT ALARM while recovering a dropped Control Bank C Rod. The procedure in progress would be 0POP04-RS-0001. The question stem stated that crew is recovering a dropped rod. With this information, the crew would be in Addendum 1, Recovery of a Dropped Rod. The Note before Step 22 of Addendum 1, warns the student that a ROD CONT URGENT ALARM will occur during the performance of Step 22. Step 22 requires the crew to open all lift coil disconnect switches in the affected bank except for the dropped rod. After that, rod withdrawal is commenced. Since the stem stated that the ROD CONT URGENT ALARM is alarming, the reason for alarming must be correct per plant design. Regardless of where the alarm sounds in the procedure, the question stated the alarm was sounding already. Since the alarm does not normally sound unless lift coil disconnect switches are opened, then the question is correct as written. No changes to the exam are warranted. The Lesson Plan, LOT 201.18 Student Handout Page 33, adequately covers knowledge of the Rod Control Urgent Alarm.

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