ML20236B317
| ML20236B317 | |
| Person / Time | |
|---|---|
| Issue date: | 04/16/1987 |
| From: | Cwalina G Office of Nuclear Reactor Regulation |
| To: | Russell W Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20236B036 | List: |
| References | |
| FOIA-87-465 NUDOCS 8710260075 | |
| Download: ML20236B317 (11) | |
Text
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DISTRIBUTION:
..Contr 1 Files APR 161987 PEB R/F PPolk GCwalina PMcLaughlin MEMORANDUM FOR: William T. Russell. Director Division of Licensee Perfonnance and Quality Evaluation FROM:
Gregory C. Cwalina, Section Leader Performance Evaluation Branch, DLPQE THRU:
Philip J. Polk. Acting Chief Performance Evaluation Branch, DLPQE
SUBJECT:
REVIEW OF NUCLEAR PLANT. RELIABILITY DATA AYSTEM (NPRDS)
In response to your request ' a review of the NPRDS was performed.
The primary focus of the review was to ascertain the usefulness of the NPRDS data j
to specifically support maintenance assessments and the MSPP, and also the -
I functions of. the Performance Evaluation Branch in general.
]
l l
The following general findings are based on the AE00 Commission Paper, SEC)-87-54, dated February 24, 1987.
1)
Timeliness:
Approximately 75% of the component failures reported in Licensee Event
/
Reports (LERs) are reported in the NPRDS.within 1 year. The data also show that some. reports are very late, e.g., failures in 1975 reported during third quarter 1986. Current NPRDS guidance states that reports j
would bes.t be submitted within 30-60 days of the fallure. Therefore, j
improved timeliness is desirable and has been discussed at recent NPRDS Users Group Meetings.
2)
Quality:
NPRDS users have experienced difficulties in using the_ data. such as inconsistencies in the engineering reports, missing engineering records, and errors in the data.
Some of these problems are sxpected in a data base of this size; however, some of the observed difficulties degiade l
the usefulness of the results and may not be obvious to the casual user.
l INP0 has identified this area as one to be improved.
3)
Participation:
The range of failure reports submitted to NPRDS by plants in calendar year 1985 was 538 to 1. tDuring the first three quarters of 1986, about l
20 plants submitted fewer than 30 reports. Additional on-site i
verification of complete reporting has been proposed for low ~ reporting
,i plants.
INPO has taken the initiative to have such verification g /0s
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Application:
Recent NRC case studies that attempted to use NPRDS data found that narrative descriptions in the NPRDS failure reports were often too brief to adequately determine failure causes.
For that reason. AE00 evaluated failure reports for root cause inforination. Only a few reports were-judged to provide good information. In addition. the current reporting guidance of the hPRDS may not support other end uses.
For example, the analysis of wear-cut and aging cannot be supported because data on the installation of a new component.for in-kind replacements.or as part of preventative maintenance is not reported. An NPR0$' subcommittee has o
been established to address __ adding more data to support other user needs.
i Within the context of these general findings, we further evaluated the NPRDS l
by conducting a hands-on trial use of the system.
The data produced as a j
result of that trial was then analyzed for its appitcation to support the MSPP and other activities of the Performance Evaluation 'dranch.
The on-screen prompts provided by NPRDS to the user were easy to follow.
The Boolean expression necessary to have the system sort the data was easy to develop and logical. An extensive users manual was available and it was easy to follow and helpful.
t was selected 'as the trial plant. Recorded failures with k
at torque ators over the.past year were sorted by the NPRDS. Twelve-records were found.
At Enci e 1 are 3 examples from the 12 data records available h These three data records are shown because they appear W directi pport the tind of work that the Performance Evaluation Branch would be performing.
The records all report failures of an RCIC valve actuator (M0-2-13-016). The three failures occurred in a 8-month period. The analysis of the failure narratives bring into question whether as accurate root cause determination was mede follow'ng the first and second failures.- Also to be considered is the possibility of whether improper maintenance performed while fixing the first failure could have contributed to the second.
I believe that this analysis shows that the NPRDS can be useful to activittes 1
of the MSPP and the Performance Evaluation Branch.
Therefore, I recommend that we request access codes and charge numbers from AE00 so that the staff can begin to use the system, originaI signedIF G
C. Cwalina. Section Leader PMCL5/ MEW FOR RUSSELL Per ormance Evaluation Bych. DLPQE rf' IKM.Dk.fE 5....,,),hB/,0(PSE,,,,
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Ccp 'eJ 7 A,.'.,
Institute of.
Qu[
l
~-
Nuclear Power Operations b.' K5.
ypH 6f*#
oste:
August 3, 1984 Memorandum To:
S. L. Rosen From:
R. L. Simard i
' :i subject NPRDS Data Processing Monthly Report for July 1984 The attached report summarizes the data, processing transactions for.~.
the montti of July.
Please
- note the - following highlights.
]
I 1.
Growth in the data base
. q I
Figures 4.1 and 4.2 show a significant increase in numbers of engineering records and component. failure reports..Shown below is the h i
% change in i
Period engineering records failure reports l
1981 2.1 16.3 1
1982 20.1
/
32.3 i
1983 20.3 45.8 1984 (7 mos.)
21.8 31.5 The level of reporting is. higher than these "nat" numbers indicate.
l This is because the data base is growing as. report 1ng increases, but j
it is als.o being pared down as both INPO and the utilities delete engine-l ering records and associated failure reports on compon'ents outside the i
Basic Reportable Scope as defined by the Scope Manual.
j l
2.
w.
- eng. records.
- eng. records
. net % increase month submitted deleted in' data base February 5,000 400 2.7 March 11,665 5,599 2.6-April 11,120 9,055 1.3
/IerA-77 4/4g-May-11,223 1,314 4.5 June 8,422' 1,046 3.3 kl July 11,424 2,475 3.6 Letters have been mailed to those'INPO Points of Contact whose units have not shown tangible progress toward meeting the December. 31 goal for 1
rescoping.
We expect the level of engineering data reporting.to increase sharply'in the last quarter.
M6fy fnbrmdon AhliE
p, S. L. Rosen August 3, 1984 Page Two
)
3.
Failure Reporting for the month of July l
There are still two units which haven't submitted failure reports this year - Ginna and Palisades.
Figures 5.1 and 5.2 show that we continue to l
get fairly regular reporting from most units, weh
-a. i e 7 u nr ek.
im< c.
j e
The net number of failure reports added to the data base is rather low (433) this month, mainly f or three reasons.
' j o
Fewer 4C reports were received by INPO (783)
Key utility NPRDS personnel are taking their summer vacations, I
resulting in fewer reports.
l 5
Auditors have recently begun stressing the importance of report-l ing only failures that meet the criteria discussed in Rev.10.
We are receiving fewer out-of-scope and incipient reports as a
{
result.
Utilities are reporting less historical data.
Only 40.3% of the failure reports received during July were discovered over six oonths ago. During 2nd quarter 1984, 49.4% were received over six months af ter discovery date.
Utilities are shif ting emphasis to engineering data collection /
reporting as the Decemt e deadline approaches.
o More deletions are taking place.
Auditors have been deleting (or instructing utilities to delete) all non-reportable failures received.
Prior to June, 1984, many non-failures were retained becausa deportability guidance was inadequate.
The rescope process results in the deletion of failure reports that are outside of BRS.
A large bold file backlog was present (432 records).
o 186 verified 4C-adds were lef t in the hold file because Invert did not process them due to a program bug.
138 AP&L rejected reports were still unresolved.
108 reports lef t inthe hold file were either unaudited or rej ected. Lack of a dedicated auditor has sloved the ef ficiency of the audit process.
.f Q
,Y i. iN, - r m:.
\\
INEhr Idaho National Engineering laboratory October 9, 1985 Mr. F. L. Sims, Director Reactor Research & Technology Division Idaho Operations Office - DOE Idaho Falls. Id 83402 REQUESTED NUCLEAR PLANT RELIABILITY DATA SYSTEM 4-FORMS - MacD-163-85
Dear Mr. Sims:
Attach'ed are the Nuclear Plant Reliability Data System (NPRD) 4-forms requested by AE0D at the September 9,1985, meeting.
I have provided 10 HPRD-4's for each quality category (i.e., adequate, probably. adequate, inadequate).
Please be advised that the attached data is considered to be proprietary data.
Very truly yours, g
[! lC$- ;
A P. E. MacDonald, Manager Risk Analysis & Equipment Qualification CJL:eb
Attachment:
As Stated cc:
B. M. Brady, USNRC/AE00, w/Att.
P. E. Litteneker, DOE-ID, w/Att.
4 J. O. Zane, EG&G Idaho (w/o Att.)
4 r
y form V7 V6f
.Ih h EGnG,o.u,,.<.
'Nf}
l P.o. Box 1625 Idaho Falls, ID 83415
- 3...; !
?
AK-----.----
i
'L,
f NY)-
Institute of
.h Nuclear Pow:r au i
Operations
\\
.]
oaw April 5, 1986 Memorandum 7,
S. L. Rosen-p,oy
-R. L. Simard ProprietaryInformaHon Attached s4.ct.
NPRDS Status Report for March 1986 LEVEL OF REPORTING The-levebef. reporting reachlid a~ record.high..this' month'with 80 o'f o
- 89. eligible ~ units (and~one NTOL unit) submitting 2302. failure reports:
See Attachment 1.
In some past months', the. level.of reporting has been skewed by one or more. units resubmitting old_ reports, e.g.,
because of changes.in the parent engineering records.- The statistics in Attachment 2, however, Jad1G41Ad%AlpstxO55&of-the March failures r
.wesendiseseeStestas1986-est Attachments 3 and 4 show-reporting by individual units. Note that 50% of the units submitted 16.or more.
reports in March. As usual, a JaparatOsme's111Ceontaintrecommendations f r,.sentacting; managements ts lants in'the"tafl%f'the* reporting A
a p pe We are continuing to use three full-time engineers to reduce the o
backlog of reports awaiting initial audit. Our target is to begin
. a udtting"fithirs" report s *si thin *10
- days 'of 'subai tta l. shows the net growth in the data base. Note that the o
net increase in failure records for the first quarter 1986.is approximately-1 equal to the number for the entire year 1983.
o esA4;#LAhmeet s4494blerunitsrhaC '--" = '"' *" --f-^-Mng M -- -
- _'. Attachment 6 summarizes the status of the remaining units and NTOL plants for which engineering data submittal is pending.
TIMELINESS OF REPORTING measures the timeliness of recent reporting (failures o
discovered in the fourth quarter 1985). At this point, we have probably processed about half of the 4Q1985 failures that will. ultimately be. reported.
failure _d P a"-.--4452 wi thinath.daysf8996400mW99f9F19959fyl.
Howe'ver, chese statistics will ' steadily decrease as. the'less timely reports continue to come in.
. f e ants in M pal g egenldag w A deeded, We are increasing the emphasis on n meliness J
in briefing OE evaluators prior.to plant evaluations.
Fora-11-9 W M/7.
1
.L t..
Rosen J Appi4. 5? 1986
,Page Two-USAGE-o Testing, program. revision. and documentation for the IBM interim NPRDS retrieval system was completed this month. -The system will be'made available to all external users with a mailing scheduled for April 5.-
j o
Support was'provided to the E&A Group in the development of an INPO plan. for improvement of industry maintenance activities.. Improved usage-of NPRDS data by INPO in the evaluation process. is a major element in the final plan.
The NPRDS related. activities in.the plan are designed to. assist'in.
. improvement of industry maintenance activities.
But the plan.should.
also be beneficial to our department objectives of improving usage of NPRDS at INP0 and in the utilities.
The plan represents,the first-commitment by' departments outside of.the A&E Division to become: familiar with and to use NPRDS.- Utilities will become more aware of NPRDS i
because they will. be talking with more evaluators that have first hand knowledge of using NPRDS..
The external' design phase of the IBM Implementation Project was:sig-o nificantly impacted this month by higher priority PPIP work. L We are preparing a proposal for IBM assistance in applying the JAD tech-nique to completing all external design. JAD (Joint Application
{
Design) is' a formal, structured approach to identifying and. collecting the information required in the design process.
Under the guidance' of an IBM consultant, a dedicated team would' complete the external design of each subsystem.
The total amount of time involved in external design can be substantially reduced from our. current estimates 'and all external design could be completed as.early as November.-
~
/
0 f
Ws (A M.A N R. L. SIMARD-i RLS:jmn Attachments cc: NPRDS Staff
-A & E Department Managers NPRDS Users' Group an
_vu 1
@ t) i r
NOTICE THE ATTACHED DOCUMENT MAY CONTAIN " PRO-PRIETARY INFORMATION" AND SHOULD BE HANDLED AS NRC " OFFICIAL USE ONLY" INFOR-MATION.
IT SHOULD NOT BE DISCUSSED OR MADE AVAILABLE TO ANY PERSON NOT REQUIR-ING SUCH INFORMATION IN THE CONDUCT OF OF-FICIAL BUSINESS AND SHOULD BE STORED,-
TRANSFERRED, AND DISPOSED OF BY EACH RECl-PIENT IN A MANNER WHICH WILL ASSURE THAT ITS CONTENTS ARE NOT MADE AVAILABLE TO UNAUTHORIZED PERSONS.
W///
COPY. NO.