ML19339B512
| ML19339B512 | |
| Person / Time | |
|---|---|
| Issue date: | 10/10/1980 |
| From: | Farmer W NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Henderson J, Kelly G, Phillips L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE), Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19339B513 | List: |
| References | |
| NUDOCS 8011070092 | |
| Download: ML19339B512 (8) | |
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%..v....r DCT 1 -01980 MEMORANDUM FOR: Those on Attached List FROM:
W. S. Farmer, Acting Chief Plant Instrumentation, Control &
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Power Systems Branch 3
Division of Reactor Safety Research, RES
SUBJECT:
TRANSMITTAL OF SURVEILLANCE AND NOISE' DIAGNOSTICS RESEARCH REVIEW GROUP MEETING MINUTES
- t Encicsed are minutes of the September 22, 1980 meeting of the Surveillance and Noise Diagnostics Research Review Group.
If you have any comments or questions, contact me on (301) 427-4272.
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'!. S. Farmer, Chaiman Surveillance and Noise Diagnostics Research Review Group Division of Reactor Safety Research
Enclosure:
As stated s
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13 0110 7,009,$.
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Encl'osure Minutes of the Surveillance and Noise Diagnostics Research Review Group Meeting Date and Place: September 22,1980, Phillips Building, Bethesda, Maryland
Purpose:
Discuss results from kRC-sponsored research in FY 80 Agenda (Attachment 1)
-Attendees:
(Attachment 2)
Summary:
Overview of Surveillance an'd Noise Diagnostics Research at ORNL (Attachment 3) 1.
The status of ORNL tasks listed in the attachment were reviewed.
2.
A list of 19 reports and papers published by ORNL this year were attached.
Summary of Loose Parts Studies (Attachment 4) 1.
Large-scale lpm tests at EGCR and other program projectives have been completed. A final report is to be prepared by the end of December.
2.
Loose parts were located with optimum precisicn in the EGCR large-scale tests using an automated maximum peak signal location algorithm (Rosenbrock Hillclimb Optimization Method).
Time of arrival signal techniques gave poorer results.
3.
Recommendations were p
,ided for consideration for improving the ipm system requirenients in R. G.1.133:
(a)
Increased number of sensors
'(b)' Proper choice of sensor location (c) Proper sensor mounting techniques (d) Calibration during plant operation BWR Stability by Noise Analysis (Attachment 5) j 1.
Using data from EPRI Peach Bottom 2 noise measurements and the ORNL LAPUR code, it has been possible to show ' reasonable agreement between the' decay ratios predicted analytically and those measured using noise analysis.
2.
It has been concluded that univariant time series analysis of the noise signals can be used for on-line stability monitoring of a BWR.
Page2;of[4-
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<NoiseSignat'urest(Attachment 6) 1 1.
Baseline neutron signatures have been obtained from six plants (Calvert Cliffs 1.and 2, Arkansas Nuclear 1 and 2, St. Lucie
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1 and H.,B. Robinson 2).'
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.2. ' Baseline l process signals _ (pressure, temperature, etc.) will a
- be obtained :in FY-81.. - Studies of.PSD data from the process j
signals will be analyzed for_ plant behavior correlation.
l,
- 3. ; Baseline neutron signatures will bs obtained from Trojan and Sequoyah nuclear plants in ~FY 81.
4.' Neutron signals taken to date gave.PSD's falling within a
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broad. bandwidth for each class of plant.
t Analytical Predictions of Neutron Noise (Attachment 7)
~
1.
Insta11e'd and tested 2D space dependent kinetics code developed j
by J. A.~Renier.
l 2.
The ex-core detector response to a vibrating PWR control rod operating at the core center was modelled.
It appears questionable -
whether rod vibration can be-detected with ex-core neutron 1
j detectors in the model. problem.
i 3.
In FY 81 the JAR 20 space dependent kinetics code will be used to study a range of PWR and BWR in-core vibration problems-for detectability using ex-core' and/or in-core neutron. detectors.
Continuou' son-Line-ReactorSurveillanceSystem(Attachment 8) j' 1.
The ORNL (DOE-loaned) noise diagnostic. surveillance system has been installed at Sequoyah _1 and has been hooked up to the TVA patch panel and checked out.
I 2.
The system can analyze. four signals for PSD's and record 16 signals for identification.
3.
Sequoyah 1.-is expected. to_ start its ascension in power test program
. shortly. The on-line surveillance. system will be used in a learning J
-mode to-develop and record pattern recognition signals at several power =
j steps and at; full' power.
.S P:ritical Monitoring with Cf-252 Neutron Source-Driven Noise f(3.Itachment.9) 3 1.
Preliminary static 2D: diffusion theory calculations _were performed for the.Zimer-(BWR) core using venture.
Calculations indicate >Cf-252 2
detector efficiency achievable such that measurements can be made :
'for; criticality;in less;than.1-hour.
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Page 3 of 4 2.
ORNL has obtained FX2TH from ANL, a 2-D time-dependent diffusion
' theory code.
After code check it will be used in conjunction with the 2-D JAR kinetics code to calculate impulse response and spectral density.
3.
CF-252 detector tests have been made at LASL on a 5% enriched uranyl
' fluoride solution tank experiment.
Results are to be analyzed.
Noise Surveillance and Diagnostic Research at Hitachi (Attachment 10) 1.
Hitachi has successfully used 1pm triangulation time of arrival and arrival order signal measurements to locate the impact of a loose part in tests in the Shimane BWR.
2.
Dr. Albrecht described the Hitachi NUCAMM-80 control system to be used for human error reduction. The system consists of a plant operation monitoring system, abnormal condition guidance system and transition guidance system.
These systems are described in detail in the attachment.
3.
Hitachi has developed a time domain BWR stability code using pck: neutron kinetics.
Automated Machinery Diagnostics (Attachment 11) 1.
Mr. Frarey from Shaker Research Corporation described the performance of an automated machinery diagnostic system installed at the Millstone Nuclear Power Plant under EPRI auspices.
2.
Response spectrum were automatically obtained from vibration measurement signals. Typical baseline spectrum are stored in the computer 'against which the new signal measurements are compared over a range of frequencies.
Flags are raised for significant
. variations.
3.
Fault. identification tables are used with the data frequency analysis to assist the engineer in diagnostics.
"On-Line" Diagnostic Instrumentation (Attachment 12) 1.
Dr. Gopal from Westinghouse Electric Company described the various diagnostic systems Westinghouse has developed to facilitate j
the detection of malfunctions.
2.
The systems described in the attachment include:
(a) Acoustic leak detection,
~ (b )'
Vibration monitoring, (c).Loosepartsdetection, (d) Noise analysis, and (e)l Insi.rument sensor response 3.
A final report has been issued on the Westinghouse research on acoustic leak detection thru valves and leakage from cracks in the primary piping. A report on response time testing is to be issued by the end of:the year.
- r Paga 4 of 4 1
Reactor Coolant Pump Monitoring and Diagnostic System (Attachment 13) ~
- 1.
Dr..Stevens, from the Babcock & Wilcox Company in Lynchburg, Virginia, described the new DOE-sponsored program to develop.
a pump monitoring and diagnostic system. This program is.being pursued with the-Toledo _ Edison Company.. A. demonstration will;be conducted on the Bavis Besse Nuclear Plant.
2.
A lar54 number of ser. sors will be used'to monitor -the pump _
' seals, and _ seal in,iection flow along with the primary system flow.
A microprocessor will be used-to perform spectral analysis on ~
vibration monitoring sensor signals from sensors attached to the t.'ain pumps.
f
' ATTACHMENT 1 SEMIANNUAL REVIEW SURVEILLANCE AND NOISE DIAGNOSTICS RESEARCH REVIEW MEETING ROOM P-110, PHILLIPS BUILDING MONDAY, SEPTEMBER 22, 1980 AGENDA 8:45 a.m.
Overview of Surveillance and Diagnostic Methods Research at'ORNL - D. N. Fry (ORNL)
Metallic Loose Parts Detection and Characterizrtion -
9:00 a.m.
R. C. Kryter (ORNL)
Monitoring BWR Stability Using Time Series Analysis 9:30 a.m.
of Neutron Noise - D. N. Fry (ORNL) 10:00 a.m.
Coffee Break 10:15 a.m.
Status of Nuclear Plant Noise Signature Library -
D. N. Fry (ORNL)
Analytkal Predictions of Neutron Noise Caused by (ORNL) 10:30 a.m.
Boiling and Control Rod Vibration - F. J. Sweeney 11:00 a.m.
Status 'of Sequoyah On-Line Surveillance System -
N. E. Clapp (ORNL)
Subcriticality Reactivity Monitoring by Cf-252 11:30 a.m.
Source Driven Neutron Noise Method - J. T. Mihalczo (ORNL) 12:00 Lunch Observations on Hitachi Research on Noise Diagnostics 1:15 p.m.
and Loose Parts Monitoring - R. Albrecht (Univ. of Wash.)
Review of Operation of an Automated Rotating Machinery 2:00 p.m.
Monitoring System - J. L. Frarey (Shaker Research) 2:45 p.m.
Coffee Break On-Line Monitoring System for Rotating Machinery in 3:00 p.m.
PWR's - R. Gopal (Westinghouse)
Overview of B&W Program on Diagnostics of Rotating 3:45 p.m.
Machinery - D. Stevens (B&W) t 4:15 p.m.
Discussion 4:45 p.m.
Adjourn l
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- ATTACHMENT'2 ATTENDEES-Surveillance _and Noise _ Diagnostics Rei'ew Group Meeting
- September _22, 1980-NRC W. S. Farmer, WRSR, RES -
L.-Lois, ARB:
H. VanderMolen, RS E.. J. Brown,. AEOD S. Gupta, CPB T. Huang. DSI J. Holonich, DSI R. satterfield, ICSB R. Schemel, DHFS DOE D. L. Harrison, LWR B. Reid, LWR Others J. T. Miha7czo, ORNL.
)
N. E. Clapp, Jr., ORNL F. J. Sweenef, ORNL 1
L. C. Oakes, ORNL R. W. Albrecht, Univ. of Hash.
D. M.'Stevens, B&W R. Gopal, Westinghouse J. Frarey, Shaker Research-H. G.- Shugars, EPRI- (Falo Alto)
~
'R. N. Whitesel,'EPRI (Washington)
K. R. Piety, TEC W
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. 00T 1 0 1999 ADDRESSEES FOR MEMORANDUM DATED.-
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.J. B. Henderson, IE E'
Q El c G. Kelly, RSB -
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@ j" K.'Jabbour, SEPB.
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L..Phillips, AB r:
ss H. VanderMolen, RS-
~*5 G. Weidenhamer, SD'
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Others I
L. Lois, ARB-D. Fieno, DPB G. Knighton, EEB
-D. G. Eisenhut, D0R R. H. Vollmer, AD/SEP-J. P. Knight, AD/ENG D. F..Ross, DDPM R. M. Satterfield, ICSB S. Hanauer, AD/PS L. S. Rubenstein, LWR W. Johnston, DSI R. Baer, LWR E. J. Brown, AE0D R. P. Gupta, SD T. L.' Huang,.CSB J. T. Holonich, CPB J. F. Stolz, LWR
'J. Stone,-IE E. Wenzinger, SD A. Bates, ACRS R. Savio, ACRS R. Schemel, CPB Non NRC G. Shugars,.EPRI R. Whitesel, EPRI J. L. Frarey, Shaker Research R. Gopal, Westinghouse D. Stevens, B&W D. L. Harrison,=D0E Bruce Reid, DOE-R. Albrecht, Univ. of Washington
.]
K. R. P_iety, TEC I
ORNL L. Oaks.
D. Fry-R. Kryter F. Sweeney N. Clapp S. Ball
- J. Mihalczo