ML20195D740
| ML20195D740 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/29/1988 |
| From: | Force E ARKANSAS POWER & LIGHT CO. |
| To: | Graves D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20195D732 | List: |
| References | |
| RER-88-01651, RER-88-1651, NUDOCS 8811070128 | |
| Download: ML20195D740 (6) | |
Text
RER-88-01651 3$@ MON R!~T
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ll SEP 3 01988 t\\
B Li ER & LIGHT OMPANY ARKAN AShhYe Nuclear Trakning Center Reeves
.R Russellville, Arkansas 72801 September 29, 1988 Mr. David Graves USNRC 611 Ryan Plaza Drive Suite 1000 Arlington, TX 76011 Centlemen:
Please find attached comments on the Senior Reactor Operator written examinatien administered at Arkansas Nuclear One on September 26, 1988.
We would appreciate your consideration of these comments for inclusion into the examination answer key.
If you have any questions on our com-ments, please contact Ed Force at (501) 964-6811.
Sincerely, t
m Ed.
Force Superintendent, Operations Training EAF:sje Attachment cc:
ANO-DCC 9
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V MEM8EA MOOLE SOUTH UT AITIES SYSTEM
05.06 The statement in parenthesis contained in the last sentence of the answer should not be required as part of the total correct answer.
The question does not solicit that response.
(imbalance is power in the top minus power in the bottom) 05.14 The answer assumes no automatic control functions.
The question states "...all control systems in automatic." With one TBV full open a 3.75% increase in steam flow occurs.
MWe inTtfally will decrease as will Tavg.
However, the question asks for values "when plant conditions stabilize".
Tave control and a MWe error signal w.11 combine to pull rods and increase reactor power to return Tave and MWe back to their pre-failure values.
Therefore, the answer should be a. same b, same
- c. increase Refer to attachment for 05.!d.
Q5.18 a.
Exposing new (less burned) fuel should also be acceptable answer to part a.
The flux in the area of the low rod was lower than average for several days, thus reducing burn up in the localized area of the rod.
The answer to part "a" should be:
Lower level of Xe or Exposing less burned (new) fuel (either answer acceptable) 6.05 d.
The device number was given without a noun name.
Confusion can be generated by using device number: as we do not require them to be memorized.
The possibility of gett;ng the right/ wrong response for the wrong reason is great. We request part d. should be omitted from the answer key and a point redistribution made for the other responses.
ATTACHMENT TO RER-88-01651 PAGE 1
O 06.07 b.
The first sentence of the question states "Service Water System".
The following sentence asks for explanation of "cross-tie */alves and loop supply / isolation valves".
The question wording limits the answer such that the Aux. Cooling System respsnse requirement is not solicited.
Thus, the answer should be modified to remove "The supply to the Auxiliary Cooling Loop (CV3643) will shut".
Q6.08 a.
Question states "penetrations are utilized for supplying loads" is misleading.
Part b. states "ICW outlet penetra-tions".
5 penetrations should be an acceptable answer to part a. if question is interpreted as meaning total pene-trations rather than ICW inlet penetrations.
The answer to part "a" should be 5 penetrations, or 3 inlet & 2 outlet penetrations.
RCP motor cooling (lube oil and air)
RCP seal cooling CROM cooling Letdown cooling Any 3 of these should be acceptable b.
According to M-234, the coolers which combine into a single line are:
CR0 and RCP motor cooling and RCP seals anB letdown This is also an acceptable answer to part "b".
Refer to attachments for Q6.08.
Q6.11 a.
Any condition that causes a runback or causes "ICS Track" will have the described affect on the Unit Master H/A station.
The question does not distinguish between Track or runback and the conditions which cause a track or runback to occur.
Therefore, an acceptable answer should include any four of the following responses:
Track
- Both generator output breakers open
- Cross limits
- SG Rx master in hand AilACHMENT TO RER-88-01651 PAGE 2
<r s..i..
e Q6.11 a.
Tracks
- Both loop demands in manual
- Rx demand in manual
- Diamond control panel in manual
- Turbine EHC in manual
- Rx trip Runbacks
- Loss of 1 FW pump >40%
- Loss of 2 cond pumps >40%
- Loss of 1 RCP >75%
- Loss of 2 RCPs <45% but <55%
- Asymmetric rod >40%
- RCS/ flow demand
- High load limit exceeded
- Low load limit exceeded Refer to attachments for Q6.11a.
b.
The question specifically requires a "final power" level.
Full credit should not require a rate (50%/ minute) be given.
Q6.12 Unfortunately, STH-1-65, does not explain that the "Automatic" and "Manual" pushbuttons are located on the various control p2nels near the equipment controls.
They are not on the unit control modules, merely feed circuits to those modules.
The words "on the unit con-trol module" should be deleted from 6.12.a & b. answer k3y.
4 Refer to attachments for Q6.12.
Q6.13 a.
The position of the nat. circ./ reflux boiling switch or 009 is also a determining factor in the selection of the OTSG 1evol control set-point.
This condition should be added to the answer.
"and position of natural circ / reflux boiling pushbutton on C09" should be included as an acceptable answer.
3 Refer to attachments for Q6.13 a.
ATTACHMENT TO RER-88-01651 PAGE 3 e
Q7.04 a.
The question relates control rod position to boron dilution.
H05.09 section 3.9 lists a set of control rod conditions for dilution in addition to what is in the atswer.
The following should also be an acceptable answer.
1.
A.
GP 1-4 100%
B.
GP 5
<80%
2.
A.
GP 1-4 100%
B.
GP 6
>95%
3.
A.
GP 1-4 IL
B.
GP 6
<7s4 Refer to attachments for Q7.04 a.
17.05c.
"SCH" may be verified from panel C-486 digital readout on the sub-cooled margin calculator.
Panel C-486 is in the Unit 1 Control Room.
This should be added to the answer as another possible source.
Refer to attachments for Q7.05 c.
Q7.09 c.
1203.28 states "stop the affected pump if it is evident the pump has lost suction.
Otherwise, attempt to regain flow by adjusting..."
Acceptable answers should include the option" Stop the pump or Reduce pump flow (either acceptable)
Refer to attachment for Q7.09 c.
08.01 b.
The numbers and assignment u. fire brigade members is not asked for in part b. of the question.
An acceptable answer should be:
Security U-2 Operations AYfECliMENTTORER-88-01651
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o j,%e s Q8.03 a.
ANO training material presents the term "keyhole" which represents the 2-mile radius, 5 miles downwind.
Therefore, the ters keyhole should be accepted as a correct answer.
Refer to attachments for Q8.03 a.
08.03 b.
Evacuation procedure Rev. 15 of 1903.30 lists an additional condition when offsite evacuation is recommended.
Another possible acceptable answer should be:
1R WB SR thyroid Refer to attachment for Q8.03 b.
08.03 c.
Since the detailed definition is implicit in the question (stating conditions for SAE and GE), a detailed definition should not be required.
Therefore, "Security threat" should be another acceptable answer.
Refer to attachments for Q8.03 c.
Q8.06 b.
Answer should reflect intent of OP 1502.04 that an RO is minimum license presence requirement when NL Operators are operating fuel bridge.
Refer to attachment for Q8.06 b.
ATTACHMENT TO RER-88-01651 PAGE 5
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