ML20126F946
| ML20126F946 | |
| Person / Time | |
|---|---|
| Issue date: | 05/10/1984 |
| From: | Arlotto G NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Lagrone J ENERGY, DEPT. OF |
| Shared Package | |
| ML20126E434 | List:
|
| References | |
| CON-FIN-B-0489, CON-FIN-B-489, FOIA-85-143 NUDOCS 8506180019 | |
| Download: ML20126F946 (4) | |
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MAY 10 W Mr. J. LaGrone, Manager Oak Ridge Operations Office U. S. Department of Energy P. O. Box E Oak Ridge, Tennessee 37830
Dear Mr. LaGrone:
FY 1984 NUCLEAR REGULATORY RESEARCH ORDER NO. 60-84-204 FOR OAK RIDGE NATIONAL LABORATORY Please authorize Oak Ridge National Laboratory to execute the program described in the enclosed NRC Order.
If this meets with your approval, it is requested that acceptance be indicated on the enclosed fom and the original be sent to the NRC Office of Resource Management and one copy returned to this office.
Sincerely, pg ='md by G. A. AdOU8 Guy A. Arlotto, Director Division of Engineering Technology Office of Nuclear Regulatory Research
Enclosures:
- 1. f:RC Order DISTR
- 2. Add'l Tenns & Conditions Subj Circ cc w/ enclosures:
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R. W. Barber DOE /EP Riggs:rdg D. Naus, ORNL 4.A. Puglise. ORM G. Arndt. DET A. Eiss, DET Wylbur M. Slater, PP&C pg I5-/N-
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ON CSLIGAfe0NE AUTMomi2ED STANDAmD TEan4 AND CONDITIONS PROVIDED DOE ARE CONSIDERED PART OF TMIS ORDER UNLESS OTHER wise 180750.
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t April 11,1984 CONTAINMENT LEAK RATE TESTING INVESTIGATIONS FIN: B0489 Additional Terms and Conditions 1.
NUREG/CR-3549. Evaluation of Containment Leak Rate Testing Criteria, was published in March 1984 by ORNL. Using funds remaining in FIN B0489, ORNL is requested to provide expert representation capable of discussing in detail this NUREG as follows:
Number of Representatives: 2 Number of meetings:
2 (one ACRS, one unspecified)
Duration of each meeting: 1 full day (ACRS); 2 full days for other Location of each meeting: Washington, D.C.
Meeting dates: Not yet finalized 2.
The objective of item #2 is to provide sufficient input for the NRC staff to determine whether, and under what conditions, a containment integrated leak rate test can account for ambient diurnal effects on some basis other than running the test for a full 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period.
After deducting from remaining funds the amount necessary to provide for item #1 above, ORNL is requested to provide answers to the questions listed below. Documentation should also be provided of the database and techniques used.
If any answers are unattainable, the reasons should be provided.
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Additional Terms and Conditions (cont'd)
B0489 Questions 1.
Which Type A tests exhibited diurnal effects and on what basis was this determination made?
2.
For those tests that exhibited diurnal effects, was there some deficiency in the test program (instrumentation, procedures, etc.) that led to the diurnal effects?
3.
What, if anything, could have been done before or during the test to eliminate, reduce, or account for the effects of perturbations in the containment environment on the measured leak rate (do not include analysis techniques)?
4.
Can certain containment types be declared immune to diurnal effects (e.g., dual containments) or others (e.g., free-standing steel) particularly susceptible to diurnal effects?
5.
Do measured air mass oscillations due to diurnal effects affect the calculated UCL leak rate so that the UCL is always a conservative measure of actual leak rate, or could actual leak rate possibly exceed UCL?
6.
Is this a function of the magnitude of the measured air mass oscillations?
7.
Do temperature changes appear to lag pressure changes in the containment during a test exhibiting diurnal effects?
8.
What are the variations of RTD measurements, spatially and temporally.
during tests exhibiting diurnal effects?
9.
How do the EPRI reduced duration criteria handle diurnal effects?
/
.