ML20195K115

NRC Operator Licensing Initial Exam Rept 50-156/OL-99-01 (Including Completed & Graded Tests) for Tests Administered on 990517-20

ML20195K115
Person / Time
Site:	University of Wisconsin
Issue date:	05/25/1999
From:	Doyle P NRC (Affiliation Not Assigned)
To:
Shared Package
ML20195K099	List: ML20195K093 ML20195K115
References
50-156-OL-99-01, 50-156-OL-99-1, NUDOCS 9906210205
Download: ML20195K115 (24)

Text

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U. S. NUCLEAR REGULATORY COMMISSION l OPERATOR LICENSING INITIAL EXAMINATION REPORT REPORT NO.: 50-156/OL-99-01 FACILITY DOCKET NO.: 50-156 FACILITY LICENSE NO.: R-74 FACILITY: University of Wisconsin

~ EXAMINATION DATES: May 17-20,1999 EXAMINER: Paul Doyle, Chief Exa er SUBMITTED BY: ,/ 5/2fhcr .

Paul Doyle', Ch,jdf E%iner D' ate '

SUMMARY

During the week of May 17,1999, the NRC administered examinations to 4 reactor operator license Candidates. All of the candidates passed all sections of the examinations.

REPORT DETAILS

1. Examiners:

Paul Doyle, Chief Examiner

2. Results:

RO PASS / FAIL SRO PASS / FAIL TOTAL PASS / Fall Written 4/0 0/0 4/0 Operating Tests 4/0 0/0 4/0 Overall 4/0 0/0 4/0

3. Exit Meeting:

Paul Doyle, Examiner, NRC Richard Cashwell, Facility Director, University of Wisconsin Reactor Facility During the exit meeting, Messrs. Doyle and Cashwell discussed the comments on the written examination. Mr. Doyle related that he had not noted any generic weaknesses on the part of the candidates during the operating tests, and thanked Mr. Cashwell for him and his staff's support of the examinations.

9906210205 990617 PDR ADOCK 05000156 V PM a i

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' _i, Comments on NRC Exam 5/17/99' Category 'A .

3. Answer sheet has right calculation, but wrong answer. Should be d

12. Answer a OK, but at high energies inelastic scattering in high Z may be better shield. That is what Doug teaches in his shielding course.

'18. We dont use $ for reactivity unit; may cause st'udents problem. Should be able to handle it fine if they convert.

Category B

2. - Should give credit for facility requirements from UWNR 004; we teach that, not Part 55.

Facility requires annual written and quarterly oral / performance -l

5. Some problem with Reactor Director answer. UWNR 150 says re-entry up to reactor director or his attemate. UWNR 006 lists succession list, starting with director and ending with most senior RO present

6. b answer is best, but TS says <l.4% for individual experiment.

9. Auto mode not listed: could confuse students. BUT d answer is wrong; ler is needed only for startup, which is ss and sw modes. The interlock is required in all modes, but the instrument is required only for startup. The question says channel.

14. Answer is b. Answer sheet is wrong i Category C;

1. Answer d is 3. Answer sheet is wrong

5. No answer on answer sheet. Answer is c

9. I object to posted setpoint memorization; setpoint is indicated on each instrument.

12. ' Our DM system will remove larvae too- 30 micron filter 13.- ^ Neat question. I never thought of asking it that way.

16. l1 object to memorizing color code'which is provide to aid in learning the system. It is locally posted on the shield wall. <

ENCLOSURE 2

.q a 4 #

l NRC RESOLUTION TO FACILITY COMMENTS A3 Agree,e .rer changed to d.

A.12 Agree, two answers accepted, either a or d..

' A.18 Comment noted.

' B.2 Part c give credit for 1 year Part d deleted.

B.5 Question deleted.

I B.6 Comment noted.

B.9 part d deleted.

B.14 Agree, answer changed to b.

C.1 Agree, answer for part d changed to 3.

C.5 Agree.

C.9 Comment noted.

C.12 Comment noted.

C.13 Comment noted.

C.16 Comment noted.

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e UNIVERSITY OF WISCONSIN 47 0

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4**4 OPERA OR LICENSING Enclosure 3

Section A R Theorv. Thermo. and Facility Characteristics Pag 31 .i Question A.1 [1.0 point]

Core excess reactivity changes with...

a. Fuel burnup

b. Control Rod Height

c. Neutron Level

d. . Reactor Power Level Question A.2 [1.0 point]

Control Rod withdrawal predominantly changes K , by changing the . .

a. fast fission factor (c).

b. . thermal utilization factor (f).

- c. neutron reproduction factor (rl).

d. resonance escape probability (p).

Question A.3 _

[1.0 point]

Reactor power increases from 30 watts to 60 watts in one minute. Reactor period is ...

. a. 30 seconds

b. 42 seconds

c. 60 seconds -

d. 87 seconds Question A.4 [1.0 point]

Which ONE of the following is an example of alpha decay?

~

a. 33 Br87 33 As 8

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er

b. 33 Bra ' 3 Br

c. 33 Brs7 uSe 88

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8 a7 l d. 3 sbr ' - xKr l '.

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Section A R Theorv. Thermo. and Facility Characteristics Pag 32 l

Question A.5 [1.0 point]

When compared to p, p.,is ...

a. smaller, because delayed neutrons are born at lower energies than prompt neutrons. j

b. larger, because delayed neutrons are born at lower energies than prompt neutrons.

c. smaller, because delayed neutrons are born at higher energies than prompt neutrons.

d. larger, because delayed neutrons are born at higher energies than prompt neutrons.

- Question A.S [1.0 point]

Five minutes following shutdown, reactor power is 3 x 108 counts per minute. Which ONE of the following is the count rate you would expect to see three minutes later?

a. 105 1

b. 8 x 10 5 }

c. 5 x 10 5

d. 3 x 105 l

Question A.7 [1.0 point]

The reactor is on a CONSTANT positive period. Which ONE of the following power changes will take the longest time to complete?

a. 5%, from 95% to 100%

b. 10%, from 80% to 90%

c. 15%, from 15% to 30%

d. 20%, from 60% to 80%

Question A.8 [1.0 point]

The reactor supervisor tells you the reactor is shutdown with a shutdown margin of 12%. An experimenter inserts an experiment in the core and nuclear instrumentation increases form 100 counts per minute to 200 counts per minute. What is the new K , of the reactor?

a. 0.920

b. 0.946

c. 0.973

d. 1.000 l

Section A R Theory. Thermo. and Facility Characteristics Pagn3 Question A.9 [1.0 point]

The term PROMPTJUMP refers to...

a. . the instantaneous change in power due to raising a control rod

b. a reactor which has attained criticality on prompt neutrons alone.

c. a reactor which is critical due to both prompt and delayed neutrons.

d. a negative reactivity insertion which is greater than p.,

Question A.10 [1.0 point]

/NELASTIC SCATTERING is the process by which a neutron collides with a nucleus and ...

a. recoils with the same kinetic energy it had prior to the collision.

b. recoils with a lower kinetic energy than it had prior to the collision with the nucleus emitting a gamma ray.

c. is absorbed, with the nucleus emitting a gamma ray.

d. recoils with a higher kinetic energy than it had prior to the collision with the nucleus emitting a gamma ray.

Question A.11 [2.0 points]

Match each of the terms in column A with the correct definition from column B.

Column A Column B

a. Fast neutrons 1. Neutrons released directly from fission.

' b. Prompt neutrons 2. High energy neutrons.

c. Slow neutrons 3. Neutrons releases from decay of fission products.

d. Delayed neutrons 4. Low energy neutrons.

Question A.12 [1.0 point]

WHICH ONE of the following nuclei will cause a neutron to lose the MOST energy while slowing down?

i

a. H' l

b. H* i C. C12 1

d. U238 i l

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i Section A R Theorv. Thermo. and Facility Characteristics Page 4 Question A.13 [1.0 point]

WHICH ONE of the following is the MAJOR source of energy released during fission?

a. Kinetic energy of the fission neutrons.

b. Kinetic energy of the fission fragments.

c. Decay of the fission fragments.

- d. Prompt gamma rays.

)

Question A.14 [1.0 point]

WHICH ONE of the following describes the MAJOR contributions to the production and depletion of xenon in the reactor?

f

a. Produced from radioactive decay of iodine and depletes by neutron absorption only.

b. Produced from radioactive decay of iodine and depletes by radioactive decay and neutron absorption.

c. Produced directly from fission and depletes by neutron absorption only. {

d. Produced directly from fission and depletes by radioactive decay and neutron absorption.

Question A.15 [1.0 point]

An experimenter makes an error loading a rabbit sample. Injection of the sample results in a 100 millisecond period. If the scram setpoint is 1.25 MW and the scram delay time is 0.1 seconds, WHICH ONE of the following is the peak power of the reactor at shutdown.

a. 1.25 MW j

b. 2.5 MW

c. 3.4 MW

d. 12.5 MW-Question A.16 [1.0 point]

The PRIMARY reason that a neutron source is installed in the reactor is to ...

a. allow for testirtg and irradiation of experiments when the core is shutdown.

b. supply the neutrons required to start the chain reaction for subsequent reactor startups.

c. provide a neutron level high enough to be monitored for a controlled reactor startup.

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d. increase the excess reactivity of the reactor which reduces the frequency for refueling.

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Section A B Theory. Thermo. and Facility Characteristics Page 5 j l

Question A.17 [1.0 point] .

i FLIP fuel contains a higher enrichment of U23s than standard fuel. WHICH ONE of the following is the correct reason that Erbium is added to FLIP fuel? Erbium is added as a burnable poison to allow for higher concentrations of U23s AND Erbium has a ...

a. high scattering cross-section for neutrons, thereby increasing the amount of neutrons j absorbed by U2 e in the epithermal range.

b. Iow scattering cross-section for neutrons, thereby increasing the relative worth of neutrons absorbed by U 238 in the epithermal range.

c. high absorption cross-section for epithermal neutrons, thereby compensating for the reduction in U2as concentration.

d. Iow absorption cross-section for epithermal neutrons, thereby increasing the relative worth of the control rods.

1 Question A.18 [1.0 point]

If a $1.5 pulse results in a peak power of 250 MW, (FWHM) of 100 milliseconds and fuel temperature rise of 145"C, a $2.00 pulse would result in ...

Peak Power FWHM Temp. Rise

a. 780 MW 80 210*C

b. 1000 MW 50 290*C

c. 1200 MW 50 350*C

d. 900 MW 80 210*C Question A.19 [1.0 point]

By definition, an exactly critical reactor can be made prompt critical by adding positive reactivity equal to ...

a. the shutdown margin

b. the K,,,,, margin

c. the p., value

d. 1.0 %AK/K.

7 Section B Normal. Emeraency and Radioloaical Control Procedures Page 6 Question B.1 [1.0 point]

Two sheets of % inch thick lead shielding reduces a radiation beam from 200 mR/hr to 100 mR/hr at 1 foot. What will the radiation read at 1 foot if you add another % inch thick lead sheet (for a total of 3 sheets)?

e. 71 mR/hr .

f. 50 mR/hr

g. 35 mR/hr

h. 17 mR/hr i

Question B.2 [2.0 points,0.5 each] l j

Match the 10CFR55 requirements for maintaining an active operator license in column A with the corresponding time period from column B.

Column A Column B

a. Renew License 1 year

b. Medical Exam 2 years

c. Pass Requalification Written Examination 4 years

d. Pass Requalification Operating Test 6 years i

Question B.3 [2.0 points] 1 Identify each of the following actions as either a CNANNEL CNECK, CNANNEL TEST or a l CNANNEL CAllBRATION.  ;

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a. Verifying overlap between Nuclear Instrumentation channels.

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b. Replacing a Resistance Temperature Detector (RTD) with a precision resistance decade box, to verify proper channel output for a given resistance,

c. Performing a calorimetric (heat balance) calculation on the primary system, then adjusting the Nuclear Instrumentation to agree.

d. During reactor shutdown you verify the period meter reads -80 seconds.

E

, Section B Normal. Emeroency and Radioloaical Control Procedures Page 7 L

. Question B.4 [2.0 points,0.5 each)

Match the type of radiation in column A with its associated Quality Factor (10CFR20) from

. column B.

Column A Column B

a. alpha 1

b. beta 2

c. gamma 5 d.' neutron (unknown energy) 10 20 Question B.5 [1.0 point]

By title, the person responsible for authorizing reentry following an evacuation of the facility during an emergency is ... (according to the Emergency P' fan)

a. Facility Director

b. Reactor Supervisor

c. Any Senior Operator

d. Any health Physicist Question B.6 [1.0 point]

Which ONE of the following correctly identify the Technical Specification experiment reactivity limits for single unsecured and secured experiments respectively?

a. 0.4 and 0.7 %AK/K

b. 0.7 and 1.4 %AK/K

c. 1.4 and 1.7 % AK/K

d. 1.4 and 2.1 %AK/K L

Section B Normal. Emeraency and Radioloaical Control Proc *dures Page 8 Question B.7 [1.0 point]

Who, by title, is the lowest level of reactor operations staff who may authorize reactor restart following a scram?

a. Licensed Reactor Operator on console.

b. Licensed Senior Operator on call.

c. Reactor Supervisor

d. Facility Director Question ' B.8 [1.0 point]

Per Technical Specifications the maximum arnount of time the ventilation system may be out of service (with the reactor running) is ...

a. 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />

b. a day

c. 2 days

d. a week Question B.9 [2.0 points,0.5 each]

Match each of the electronics channels in column A with the reactor modes for which it must be operable in column B.

Column A Column B

a. Fuel Temperature 1. Steady State ONLY

b. Linear Power Level 2. Square Wave ONLY

c. Log Power Level 3. Pulse ONLY

d. Log Count Rate

. 4. Steady State and Square Wave ONLY

5. Steady State and Pulse ONLY

6. Square Wave and Pulse ONLY

7. All Modes

.____m

O Section B Normal. Emeraency and Radioloaical Control Procedures Page 9 Question B.10 [1.0 point].

Which ONE of the following operations does EOTQ require the presence of a licensed SENIOR reactor operator?

a. Recovery from an unplanned snutdown.

b. An UNLICENSED individual operating the reactor for training.

c. An UNLICENSED individual moving fuel.

d. Initial Startup.

Question B.11 [1.0 point]

Which ONE of the following RELAY scrams is tested during normal prestartup checkout?

a.. Pool Level

b. Fast Period

c. HV Monitor

d. Core inlet Temperature Question B.12 [1.0 point]

Which ONE of the following is the safety precaution you are required to follow when bugg/ng the thermal column nuclear instrumentation detectors?

a. Verify you are not running over the power cable by the door wheels.

b. Verify CO,is turned on before opening door,

c. Verify operation of the Thermal Column ventilation system prior to opening door.

d. Verify radiation level inside Thermal Column is low enough for safe entry.

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l Section B Normal. Emeroency and Radioloaical Control Procedures Page 10 Question B.13 [2.0 points,0.5 each]

Match each of the health physics' actions in column A with the survey equipment you would use in l j

column B. (Each answer used only once.)- 1 Column' A ' Column B

a. Measure dose rate from a very radioactive 1. GM (E-520) sample removed from a whale i

b. Check for tharmal neutron leakage from. 2. lon Chamber a beam port experiment.

c. Perform a laboratory gamma radiation 3. ASP-1 Snoopy or Ball survey while the reactor is shut down.

d. Count swipes for contamination. se 4. Low Background alpha / beta flow proportional counter Question B.14 [1.0 point]

Which ONE of the listed methods for adding water to the poolis the NORMAL method?

Fill from ...

a. city water through valve located above the West Basement entrance door.

b. distilled water storage tanks

c. softened water through demineralizer

d. city water through demineralizer Question ' B.15 [1.0 point)

The CURIEcontent of a radioactive source is a measure of

a. the number of radioactive atoms in the source,

b. the amount of energy emitted per unit time by the source

c. the amount of damage to soft body tissue per unit time.

d. the number of nuclear disintegrations per unit time. I l

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Section C Plant and Radiation Monitorina Systems Pags11 Question C.1 [2.0 points,0.5 each]

Match the reactor power instrumentation listed in column A with its corresponding detector type from column B. (Choices from column b may be used more than once or not at all.)

Column A Column B

a. Source Range Channel 1. Boron Lined Uncompensated lon Chamber i

b. Intermediate Range Channel 2. Boron Lined Compensated lon Chamber  !

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c. Power Range Channel - 3. Unlined lon Chamber

d. Pulse Channel 4. Fission Chamber

5. Proportional Counter Question C.2 [1.0 point]

WHICH ONE of the following components is primarily responsible for maintain pool water pH?

a. Water Filter i

b. Mixed Bed lon Exchanger i l

c. Skimmer l

d. Water Softener '

Question C.3 [1.0 point]

WHICH ONE of the following detectors is used primarily to measure N'8 release to the environment? ,

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a. NONE, N'8 has too short a half-life to require environmental monitoring,

b. Stack Gas Monitor

c. Stack Particulate Monitor

d. Bridge Area Monitor Question C.4 [1.0 point] l WHICH ONE of the following gases is used to propel the rabbit in the pneumatic tube system?  ;

a. air l

b. CO2

c. Na

d. He r

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i Section C Plant and Radiation Monitorina Systems Page 12 i~ Question C.5 [1.0 point] )

WHICH ONE of the following is the purpose of the diffuser pump?

a. Increase heat transfer rate due to increased mixing within the core.

b. Decrease the activation rate of O to Nie due to reduced time in core. l

c. Increase transpod time for N to reach surface of pool.

d. Break up of O bubbles in pool, thereby decreasing production of Nia, Question C.6 [1.0 point] l WHICH ONE of the following poisons is NOT used in any of the control elements? l

a. Borated Graphite

b. Boron-Aluminum Alloy (Boral) i

c. Hafniurn

d. Stainless Steel  !

Question C.7 [1.0 point]  !

A pipe flange fails just downstream of the primary pump. What design feature of the primary system  !

prevents draining of the pool?

a. Signal from a float switch shuts a valve in the pump suction line.

b. Signal from a float switch shuts off the primary pump.

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c. Level in the pool drops below the Net Positive Suction Head pressure minimum required to '

operate the pump.

d. Level in the pool drops below siphon break holes in the primary suction pipe.

' Question ' C.8 [1.0 point]

Which ONE of the following is the design feature which limits Ar diffusion from the thermal column into the Reactor Laboratory?

a. Ventilation within the thermal column is kept at a low pressure so that air leaks into the thermal column past the gasket. i

b. The inside of the thermal column is slightly pressurized with a CO2 purge.  ;

c. The inside of the thermal column is slightly pressurized with a N2 Purge,

d. The inside of the thermal column is slightly pressurized with a Helium purge.

1 er

Section C Plant and Radiation Monitorina Syste,m_s Page 13 Question C.9 [2.0 points,0.5 each]

Match the four area radiation monitors which can cause a building evacuation, in column A, with their respective setpoints,in column B. (Each detector has only one setpoint. Setpoints may be used more than once or not at all.)

Column A Column B

a. Demineralizer 10 mr/hr

b. Reactor Bridge 30 mr/hr

c. Thermal Column Door 50 mr/hr

d. Console 70 mr/hr 90 mr/hr Question C.10 [1.0 point]

Which ONE of the following methods is NOT used as a controlin the cooling system,

a. Adjust primary water flow through the heat exchanger.

b. Adjust secondary water flow through the heat exchanger

c. Adjusting air flow through the cooling tower

d. Adjusting sump water flow through the cooling tower

)

I Question C.11 [1.0 point]

Which ONE of the following causes the primary pump running light to energize?

a. power available to the pump controller.

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b. the pump itself has power.

c. pump discharge pressure is above a setpoint.

d. a check valve downstream of the pump is open.

Question C.12 [1.0 point]

Which ONE of the following contaminants is most efficiently removed by the domineralizer.

a. Ard '

b. 1"

c. mosquito larvae

d. Oil

l Section C Plant and Radiation Monitorina Systems Page 14 l 1-Question C.13 [1.0 point]

Which ONE of the following reactor control elements (rod or blade) will scram on a relay scram signal, but NOT on an electronic scram signal.

a. Safety Blade 1

b. Safety Blade 3

c. Regulating Blade

d. Transient Rod Question C.14 [1.0 point]

Which ONE of the listed annunciators will NOT cause an alarm at Police and Security Headquarters?

a. Pool Level

b. PoolTemperature

c. Evacuation

d. Intrusion '

Question C.15 [1.0 point]

Which ONE of the following describes how the ventilation system responds on receipt of an evacuation alarm?

a. Room exhaust fan continues to operate, emergency exhaust fan must be started manually.

b. Room exhaust fan continues to operate, emergency exhaust fan starts automatically.

c. Room exhaust fan must be secured, emergency exhaust fan must be started manually.

d. Room exhaust fan must be secured, emergency exhaust fan starts automatically.

l Question C.16 [2.0 points,0.5 each]

Match the system listed in column A with the proper piping color code listed in Column B. j.

Column A Column B I

a. City water 1. Red

b. Air 2. Blue l

c. Contaminated water 3. Green j

d. Softened water 4. Black l I

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Section C Plant and Radiation Monitorina Systems Page 15

Question C.17 [1.0 point]

'T

. Which ONE of the following methods is used to prevent winter freeze-up of the coolant tower, while

.' the reactor is secured?

a. tower water is heated by steam lines provided by the university.

b.' tower water is heated by heat strips. )

c. tower water is automatically drained to the sump tank when the pump is off.

^ ' d. tower water pump is left on to add heat.

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n 1 Section A R Theory. Thermo. and Facility Characteristics Page 16 .

Answer Kev l I-K

. A.1 ' a

, REF: Operating training marual, {

A.2 - b l REF: . Operating training manual, R Physics 1, pg. 4.

A.3) b d Answer changed per facility comment, f P? 't -

- REF:

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In =- t=60sec=66.56 (Poj t. In(2) also Operating training manual, Math and Physics, pg. 3.

A.4 > a

= REF: Operating training manual, Physics I, pg.1.

f A.5 b REF: Operating training manual, R Physics 11, pg. 2.

A.6 d REF: Operating training manual, R Physics 11, pg. 4. j l

A.7 c- I REF: Time is related to ratio of final power to initial power. 2:1 is the largest ratio. Operating l

. training manual, Math & Physics A.8 b

-1 1 K ,' 1 +SDM i - 1 +0.12 - 0.892857 CR,(1- K ,,) =.CR,(1-K,,,);

g p, 100 1 - K ,' =' 200 (1 - 0.892857)= (0.0535715) - .

K,,, = 0.9464285 Also, Operating training manual, R Physics 11, pg.1.  !

A.9 a i REF: . Operating training manual, R Physics ll pg. 5.

A.10 ' b REF: Physics I, pg. 3. i A.11 a, 2; b,1; c, 4; . d, 3 REF: . Operating training manual, R Physics I, pg. 2 and Physics pg. 2. i l

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' Section A R Theory. Thermo. rnd Facility Characteristics Page.17 A.12 a'or d Second correct answer added per facility comment.

REF: Operating training manual, R Physics I, pg. 2.

A.13 b-REF: Operating training manual, R Physics I, pg. 2.

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A.14 . b -

REF: Operating training manual, R Physics I, pg. 5.

A.15 c.

REF: -P = Po e'", P = 1.25 Mwatt _ x e**' = 1.25 - x e = 3.3979 '

A.16 c REF: . Operating training manual, R Physics 11, pg. 5.

- A.17 c-REF: Operating training manual, R Physics lil, pg. 2, 4* paragraph.

. A.18 b REF: Peak Power is proportional to 66,,,,2, FWHM is proportional to 1/A$-,, and Temperature increase is proportional to A0,,,,, NOTE: A$,,,, = p - p, also, Operating

. training manual, Pulsing,

' A.19 ~ c -

REF: Operating training manual, Miscellaneous I, pg. 2.

Sectior B Normal. Emeraency and Radioloaical Control Procedures Page 18 Answer Kev B.1 a REF: From the stem 2 sheets equal 1 half thickness i = lo (%" 5 = 200 x 0.3535 = 70.71 B.2 a, 6; b, 2; c, 2; d-+ Part d deleted per facility comment.

REF: 10CFR55.

8.3 a, CHECK;  !

b, TEST; c, CAL; d, CHECK '

REF: T.S. DEFINITIONS 8.4 a, 20; b,1; c,1; d,10 REF: 10CFR20.100x 0.5 s Question deleted per facility comment.

REF: UWNR 006, Emergency Plan, 6 3.1.

B.6 b REF: Technical Specification 3.6.

B.7 h REF: JWNR 115, SRO signature required.

l B.8 c REF: Facility supplied question C.133, also Tech. Spec. 3.5.

B.9 a,7; b,4; c,4, d;-7 Part d deleted per facility comment.

REF: Technical Specifications Table 1.

B.10 b REF: UWNR 001, p.1.

B.11 b REF: Rewrite of facility supplied question B.2 B.12 d REF: Facility supplied question B.24.

B.13 a, 2; b, 3; c,1; d, 4 REF: Rewrite of facility supplied question B.52.

B.14 c REF: Facility supplied question 8.57 B.15 d REF: Facility supplied question B.85.

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,g- Section C Plant and Radiation Monitorina Systems ' Page 19

' Answer Kev C.1 ' a, 4; b, 2; c,2; d, 2 REF: SAR,' 9 2.5.1, Figure 23.

C.2 b REF: SAR, S 2.3.3,1" -

C.3 a REF: SAR, C.4 b REF: SAR,6 2.4.411

' O.5 c Omitted answer added per facility comment.

REF: SAR,6 2.3.21 6 and 7.

C.6 c REF: 6 2.1.5; 9 2.1.6; and 2.1.71*' in each section.

C.7 d REF: ' SAR,9 2.3.2 2"d .

C.8 a-REF: SAR, 9 2.4.1, 3'd 1 C.9 a,90; b,50; ' c,10; d.10

-REF: Complete rewrite of facility supplied question C.10.

J C.10 - a REF: Complete rewrite of facility supplied question C.23. R l

C.1 ! c l I1EF: Operating Training Manual, Reactor Water Systems IV, pg. 2, 2. l C.12 b REF: Water systems C.13 d REF: Complete rewrite of facility supplied question C.6. 1 C.14 b i REF: Complete rewrite of facility supplied question C.1.

C.15 a REF: Facility supplied question C.16.

• C.16 a, 3; . b,4; c,1; d, 2 REF: Facility supplied question C.103 C.17 c REF: Operating Training Water Systems IV, pg. 3 of 8, Secondary System, 4.

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. Comments on NRC Exani5/17/99 Category A:

3. Answer sheet has right calculation, but wrong answer. Should be d

12. Answer a OK, but at high energies inelastic scattering in high Z may be better shield. That is what Doug teaches in his shielding course.-

18. We don't use $ for reactivity unit; may cause students problem. Should be able to handle it fme if they convert.

Category B

2. Should give credit for facility requirements from UWNR 004; we teach that, not Part $5. Facility '

requires annual written and quarterly oral / performance 1

5. Some problem with Reactor Director answer. UWNR 150 says re-entry up to reactor director or his alternate. UWNR 006 lists succession list, starting with director and ending with most senior -

RO present 6.' b answer is best, but TS says <l.4% for individual experiment.

9. Auto mode not listed: could confuse students. BUT d answer is wrong; ler is needed only for startup, which is ss and sw modes. The interlock is required in all modes, but the instrument is required only for startup. The question says channel.

14.  : Answeris b. Answer sheet is wrong

~ Category C

1. ' Answer d is 3. Answer sheet is wrong

5. No answer on answer sheet. Answeris c i

<>9. I object to posted setpoint memorization; setpoint is indicated on each instrument.

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12. OurDM system will remove larvae too- 30 micron filter

13. Neat question. I never thought of askmg it that w3y.

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16.. I objectioM;siziig color code which is provide to aid in learmng the system. It is locally pdsted on%e shield wall.

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