ML20236N344

Forwards Responses from Doctor for Questions Re Temp Effects on Ultrasonic Exam & Limitation on Transducers Greater than 5 Megahertz Per Nureg/Cr 5965

ML20236N344
Person / Time
Issue date:	02/13/1998
From:	Battige C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Mary Anderson, Howe A, Parkhill R IDAHO NATIONAL ENGINEERING & ENVIRONMENTAL LABORATORY, NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
Shared Package
ML20236K829	List: IA-98-188, Informs That NMSS May Have Workable Solution Plan Re VSC-24 UT Insp.Will Keep People Informed of Schedule & Progress ML20236K827 ML20236K848 ML20236K869 ML20236K893 ML20236K930 ML20236L060 ML20236M146 ML20236M159 ML20236M171 ML20236M185 ML20236M192 ML20236N213 ML20236N253 ML20236N344 ML20236N366 ML20236N388 ML20236N420 ML20236N482 ML20236N503 ML20236N508 ML20236N521 ML20236N527 ML20236N548 ML20236N589 ML20236N600 ML20236N605 ML20236N612 NUREG/CR-5985, Provides Summary of NUREG/CR-5985,PNL-8919,Supplement 1, Review of P-scan Computer Based Ultrasonic ISI Sys
References
FOIA-98-188, RTR-NUREG-CR-5965 NUDOCS 9807150097
Download: ML20236N344 (2)

Text

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From: Charles (Ken) Battige / N # N To: internet:inel. gov:mta2, AGH1, RWP, TWD2.TWPO.DAJ1 d //o W, umJ )

Date: 2/13/9810:19am

Subject:

Responses from Steve Doctor on UT Questions Question 1:

Temperature effects on the ultrasonic examination. The owners have declared a maximum temperature 150F during the examination. What effects would this have on the UT/ transducers /couplant (right now a water drip)/ete?

Steve's Response:

The velocity of ultrasound is affected by temperature, so corrections must be made. However, this is a low temperature and should lead to only minor corrections. In addition, this low temperature will not cause water to boil or depole  ;

piezoelectric. Some compatible materials must be selected to minimize any changes but I do not see this as much of a problem.

Question 2:

Limitation on transducers > 5 MHZ per NUREG/CR 5965 (1994), p. S1.57 Steve's Response: '

I talked with Rob Harris on this limitation. It was a result of the analog to digital converter only operating at 32 MHZ. I would expect that this has been upgraded because the technology is moving rapidly and it would enhance the capabilities of the P-scan system. But this definitely needs to be checked. The impact is that this would have the effect of lowering the signal to noise ratio and this would not be acceptable.

Ken:

Swain Distribution, the US distributor for the P-Scan system in Searcy, AR,is sending me technical info on the P-Scan. I am waiting for a call back about frequency capabilities.

CC: FCS 1

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Subject:

Responses from Steve Doctor on UT Questions Creation Date: 2/13/9810:19am From: Charles (Ken) Battige Created By: WND1.WNP7:CKB1 Recipients Post Office intemet mta2 Post Office TWD2.TWP0 DAJ1 (Deborah Jackson)

Post Office WND1.WNP7 AGH1 (Allen Howe)

FCS CC (Frederick Sturz)

RWP (Ronald Parkhill)

Domain. Post Office Route intemet intemet:Inel. gov TWD2.TWP0 TWD2.TWP0 WND1.WNP7 WND1.WNP7 Files Size Date & Time MESSAGE 1361 02/13/9810:19am View 4109 02/13/98 05:19am Options Expiration Date: None Priority: Normal Reply Requested: No Return Notification:: None Concealed

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