ML20238E601
| ML20238E601 | |
| Person / Time | |
|---|---|
| Issue date: | 05/07/1987 |
| From: | Plumlee G NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Mike Williams NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| Shared Package | |
| ML20238E398 | List:
|
| References | |
| FOIA-87-465 NUDOCS 8709150093 | |
| Download: ML20238E601 (3) | |
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-[ 'o
~,, UNITED sT ATEs
/" e NUCLEAR REGULATORY COMMISSION l
( WASHINGTON. D. C. 20555
%,,,,,# MAY 071987 PEMORANDUM FOR: Mark H. Williams, Chief Trends and Patterns Analysis Branch, AE0D FROM: G.L. Plumlee III Senior Plant Systems Engineer Trends and Patterns Analysis Branch AE00
SUBJECT:
May 13-14, 1987 NPRDS USERS GROUP MEETING I
l As noted in our ongoing NPRDS data reporting evaluations, user's connents are becoming part of the NPRDS evaluation / improvement process. This should promote the evolution of this process into a self-checking system. To achieve this goal, we have been and will continue to provide INPO with user feedback. Therefore, a proprietary copy of user connents will be hand delivered to INPO at the next meeting of the NPRDS Users Group scheduled for May 13-14, 1987. The proprietary copy provides appendices and tables provided by INEL showing the NPRDS data quality concerns identified during l' the main feedwater turbine and motor driven pump studies.
N During the course of the trends and patterns analysis of the above selected main feedwater system components, data from the NPRDS engineering records were found to be missing or questionable. The data has been corrected, and a sunnary of the data issues is attached. Since unit specific data is treated as proprietary, a nonproprietary summary of outstanding issues is attached.
i
- d G.L. Plumlee III Senior Plant Systems Engineer Trends and Patterns Branch, AE00
Attachment:
As Stated cc: E. Boyle
- 8. Brady%
R. Dennig J. Crooks T. Meachum, INEL Fo2.4-7 7- V63-C//z 8709150093 870911 PDR hDohh465
NPRDS ENGINEERING RECORD DATA VERIFICATION FOR MAIN FEEDWATER PU Following is a summary of outstanding issues raised during the NPRDS engineering record verification ef f ort conducted in support of the NPRDS trends and patterns analyses for:
o sain f eedwater turbine-driven pumps (FUMF: and their associated turbine (TURBIN) and governors (MECFUNi, and o
main feedwater motor-driven pumps (FWPU) and their associated '
setors (MOTOR) and circuit breakers (CrTBRK).
The data was verified by o
telecon with the appropriate plant NPRDS coordinators o
review of the applicable plant systea drawings, FSAR, etc.; and c telecen with pump aanuf acturers, Conclusions 1 The data verification ef f ort concentrated priearily on those fields that had a direct impact on the trends and patterns analysis. Based on the findings it can be assumed that other fields also contain discrepant data.
o The f ollowing fields appear to be inadequately defined. There are inconsistencies in the reported data and redundant and ambiguous use of WPRDS codes. Fields other than those reported below may also be sisitarly af f ected. .
Internal environment External environment Pusp rotational speed - thellllll contact questioned whether the data should reflect start-up conditions or normal 4
operating conditions; the reported speed say vary depending f on which condition is reported.
Turbine inlet pressure - data represents a sixture of low (or normal operating pressure) and high (or start-up pressurel stras systess' operating pressure.
Circuit breaker already actuation ambiguous list of -codes a new code has been added to an o
Conflicting fields within and across NPRDS engineering records -
11 for MOTOR and CKTBRK there exists four fields which supply similar information (MOTOR capacity line voltage, MOTOR voltage rating, 2)
CKTBRK voltage rating, and CKTSRK operating voltage).
for PUMP there exists two fields which supply similar j information (flow capacity and flow rating).
1 There exists many discrepancies in the values input for these fields, c
Fields (such as the environment fields., governor torque, and CKTBRK temperature rating) that are optional are of very little use f or trend and pattern analysis unless conditions under which they are sanditory can be defined.
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NPRDS importance not ' recognized; soce plants contacted were suprised that the data is being used for detailed studies such as ))
the trends and patterns analyses.M is an exception. M is trying to analyze its own NPRDS data to improve plant perf ormance.
j Additionally, some plants indicated awareness that discrepant data j
raisted in the associated data, but lacked the time and soney (primarily time) to verify and update it. j
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o Coeponent records sissing f rom NPRDS. This say be attributed to the corponent records not being submitted to the data bace; however, it also appears that approvisately 10% of the records ;
h.<e been coded with an incorrect ' application code'. !
o Not all required fields are completed. Most plant contacts, with j
which this was discussed, attributed this to lack of information at the time the data was input to NPRDS. Again, it is emphasiand
- that it appears minimal ef f ort has been expended to update NPRDS records. I o
Almost all plant contacts indicated a concern fcr discrepent or sissing data in NPRDS.
It was further indicated that the correct data would be input either insediately or in the near future.
A total of verification 3B units representing 23 stations were involved in the data effort. f
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