ML20246Q217

Forwards Comments on Senior Operator Written Tests on 890726-27

ML20246Q217
Person / Time
Site:	Aerotest
Issue date:	07/31/1989
From:	Simens H AEROTEST OPERATIONS, INC.
To:	Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20246Q097	List: ML20246Q092 ML20246Q128 ML20246Q217
References
NUDOCS 8909110392
Download: ML20246Q217 (5)

Text

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+7 AEROTEST OPERATIONS, INC.

/ 3455 F0SToRIA WAY . SAN RAMoN CAUFoRNIA 94583 . (415) 8661212

'Ws July 31, 1989 U.S. Nuclear Regulatory Commission Region V '

, 1450 Maria Lane, Suite 210 Walnut Creek, Ca. 94596 Attention: Dennis F. Kirsch, Chief Reactor Safety Branch

Subject:

Comments on Senior Operator Licensing Examinations July 26, 27, 1989 The enclosed comments are in response to the Senior Operator written tests administered by Pete Isaksen, EG&G Idaho and Gary Johnston, USNRC to Hugo Simens and Diego Figueredo of Aerotest Operations, Inc.

The tests were conducted efficiently and effectively with minimal interference of normal operations. We wish to thank the examiners for their consideration.

We lock forward to receiving the results of the grading and review.

Sincererly, A

Hugo Sirp s, President and CEO Aerotest Operations, Inc.

cc: Pete Isaksen l EG & G Idaho, Inc.

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Facility Review Comments for SRO Tests 7/26/89 Q. H.03 The answer for this question is correct as stated on the answer sheet page 34; however, a second answer is given in the Hazards Summary Report, AN-1193 on page 44, VII.A.1. The observation of suberitic. neutron multiplication is the common factor in the two answers.

A0 requests either answer be accepted.

Q. H.04 The use of the term " core life" in the context of the question is not understood. Page 1-16 of ARRR OTM, Vol 4, p.1-16 in the paragraph preceded by an

• states "It is important to note that when reactivity (either positive or negative) is inserted into any critical reactor, for a very short time the reactor behaves as if all the additional neutrons are prompt. ... . In addition, the answer sheets of TEST NO. SEVEN (in a figure reproduced from a previous SRO test from the NRC) question 16 (center illustration) clearly illustrates the above phenomenom.

A0 requests that the answer d be considered correct Q. H.11 b The test answer in the material supplied to EG&G, Idaho was not complete. The answer of 10 % for the total ke rr change was correct. After subtracting the original 5%, the answer b=comes 5% or answer 3 The formula from the reference material rovided with the test is:

C1 (1-kerr1) = C2 (1-keff2) 10(1-0.95) = 5(1-ke rf2) 2 x 0.5 = 1-keff2 keff2 = 0 95 - 0.9

= 0.05 or 5%

A0 requests that the answer be changed to 3 Q. I.06 Pg. VI-2 says that " ...the waste will be treated to separate the radioactive material or removed to a waste disposal site." Only if analysis shows exempt levels of radioactivity is the water released to the sanitary sewer system. Answer c. is equally possible. If the word " treated" had not been used and the radioactivity was below exempt quantities then the water would be released into the sanitary sewer system.

A0 requests that the answer c be chosen.

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Q. I.09 . The' term "setpoints" was confusing to the applicanto l since i t' is used only for instrumentation at Aerotest. i Therefore, the Tech Spec limits for setting these points would be ]

a-normal response. The levels would be considered a point at which the emergency would exist.

A0 requests that-the Tech Spec limits for the Area Monitor, Water Monitor and Air Monitor be acceptable with no set point'for l the smearable surface contamination.

l Q. J.03 Since SCRAMS is-not defined, the interlocks which open the. scram chain if not made up provide scrams. Therefore, acceptable. answers in addition to those listed in the answer sheet would be:

a. the selector switch not in the "oper." position.

b. the selector switch on calibrate, Recover switch-depressed,. period "0PERATE/ CHECK " switch on Check infinity,

' power off. _ .

A0 requests that the above interlocks be added to the list of acceptable answers.

Q. K.12 "If all answers listed were explicit'in their reference to element' type as were a,c and d, d would be the only correct answer- ("The aluminum elements' graphite cylinders are approximately 3.4 inches long.").

A0 requests that both answers be accepted.

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NRC Resolution of Facility Comments for SRO Exam Given on July 26,-1989 at Aerotest y

1L91 Answer key modified to accept' either answer for full' credit.

tLD1 Question deleted, since it is not clear whether the response is immediate or of longer term. q y H,116 Answer key modified to 3.

L91 Question deleted,-. since there could be cot 4 fusion on whether' the we.ste was or was not treated.

Lp1 Question will be noted for future use to substitute values or.

limits vs. setpoints to eliminate.any possible confusion. The

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fact remains that the instrument setpoints do not cause the event to be classified as 'a Radiological Emergency. Since alarm setpoints are more conservative and if only the instrument alarm setpoints are given half credit will be given'for correct instrument alarm setpoints.'

L. M1 Question will be noted for future use to indicate other than interlocks. 'If interlocks are given for part a. or b., they will be accepted for full credit. -The reference for interlocks is

. Figure-9-5, Page IX-9 of Volume 2.

L12 Question deleted since b. did not indicate which type of element.

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