NUREG-1706, Responds to to Dk Rathbun,Requesting Info on Concerns Raised by Constituent E Mayer Re Y2K Readiness of Us NPPs.NUREG-1706, Y2K Readiness in Us NPPs Encl: Difference between revisions

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#REDIRECT [[NUREG-1706, Concludes That There Are No Nuclear Plants with Y2K Issues Involving Safety Sys,Based on Review of Licensee Responses & Onsite Assessment of Licensee Y2K Activities as Described in NUREG-1706 & GL 98-01]]
| number = ML20217N819
| issue date = 10/20/1999
| title = Responds to to Dk Rathbun,Requesting Info on Concerns Raised by Constituent E Mayer Re Y2K Readiness of Us NPPs.NUREG-1706, Y2K Readiness in Us NPPs Encl
| author name = Travers W
| author affiliation = NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
| addressee name = Young D
| addressee affiliation = HOUSE OF REP.
| docket =
| license number =
| contact person =
| case reference number = RTR-NUREG-1706
| document report number = GL-96-70, GL-98-01, IEIN-96-070, NUDOCS 9910290139
| title reference date = 09-16-1999
| package number = ML20217N825
| document type = CORRESPONDENCE-LETTERS, OUTGOING CORRESPONDENCE
| page count = 40
}}
 
=Text=
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UNITED STATES i
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NUCLEAR RE^ULATORY COMMISSION WASHINGTON, D.C. 205'H001 October 20, 1999 The Honorable Don Young Member, United States House of Representatives 222 West 7th Avenue, #3 Anchorage, Alaska 99513-7595 Dear Congressman Young.
I am responding to the letter you sent to Dennis K. Rathbun of the U. S. Nuclear Regulatory Commission (NRC) on September 16,1999, in which you requested information on concerns raised by one of your constituents, Mr. Ed Mayer, regarding the Year 2000 (Y2K) readiness of the U.S. nuclear power plants.
By way of background inforrnation, I am pleased to tell you that over tt r
-*l years, the NRC staff has been working with its licensees to ensure that potential Y2K issues have been identified and corrected in order for plants to function properly during the Y2K transition. The NRC has issued Information Notice (lN) 96-70, " Year 2000 Effect on Computer System Software," December 24,1996; Generic Letter (GL) 98-01, " Year 2000 Readiness of Computer Systems at Nuclear Power Plants," May 11,1998; and GL 98-01, Supplement 1, " Year 2000 Readiness of Computer Systems at Nuclear Power Plants," January 14,1999. IN 96-70 informed alllicensees of the potential problems that nuclear facility computer systems and software might encounter during the transition to the new century. In GL 98-01, reference is made to Nuclear Energy Institute / Nuclear Utilities Software Management Group (NEl/NUSMG) 97-07," Nuclear Utility Year 2000 Readiness," which describes an approach that all licensees have agreed to utilize in addressing the Y2K issues at their facilities. This guidance document (NEl/NUSMG 97-07) came out of a joint effort between NEl and NUSMG. In GL 98-01, the NRC accepted the NEl/NUSMG 97-07 guidance as an appropriate program for nuclear power plant readiness and required that all operating U.S. nuclear power plant licensees submit written responses regarding their facility-specific Y2K readiness programs. Licensees were required to report their Y2K readiness status by July 1,1999. Licensees that were not ready were requested to provide their schedule fcr completing their Y2K activities. Supplement 1 to GL 98-01 expanded the scope of the reporang requirements'to include the systems that are necessary for continued plant operation and that are not covered by the terms and conditions of the plant's license and NRC regulations.
The NRC-has received reports that all 103 operating nuclear power plants (units) have no Y2K-related problems that directly affect the performance of safety systems. As of September 30,1999, licensees for 93 of these piants indicated that all of their computer systems that support plant operation are Y2K ready. Licensees for the remaining 10 plants reported that they have additional work to complete on a few nonsafety computer systems or devices to be fully Y2K ready and provided their schedules for completing the work. Of the 10 plants, about 5 need work on operational support systems, or systems needed to support power generation.
Other plants need work on plant monitoring and administrative systems, or systems needed to i
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==SUBJECT:==
Y2K-CONCERNS (CONGRESSMAN DON YOUNG).
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* I Honorabia D. Young need to wait for a plant outage scheduled in the fall in order to perform the work or the necessity of waiting for delivery of a replacement component. None of the remaining work affects the ability of a plant to shut down safely, if necessary.
One of a number of initiatives under1aken by the NRC staff to address the Y2K issue was the conduct of 12 sample audits of licensee Y2K readiness programs. The NRC staff determined that this approach was an appropriate means of oversight of licensee Y2K readiness efforts because all licensees had committed to the nuclear power industry Y2K readiness guidance I
(NEl/NUSMG 97-07) in their first response to NRC GL 98-01 and because the NRC staff had not identified any Y2K problems in safety related actuation systems. The sample of 12 licensees included large utilities, such as Commonwealth Edison and Tennessee Valley Authority, as well as small single-unit licensees, such as North Atlantic Energy (Seabrook) and Wolf Creek Nuclear Operating Corporation. Because licensee Y2K programs are corporate-wide, many of the NRC staff audits encompassed more than a single nuclear power plant site because many utilities own more than one nuclear power plant. In all,42 of 103 operating 1
nuclear power plant units were associated with the Y2K readiness program audits of 12 utilities.
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The NRC staff selected a variety of types of plants cf different ages and locations in this sample i
in order to obtain the necessary assurance that nuclear power industry Y2K readiness programs are being effectively implemented and that licensees would be on schedule to meet
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the readiness target date of July 1,1999, established in GL 98-01. In late January 1999, the NRC staff completed the 12 audits. On the basis of the audit findings, the staff concluded that i
the audited licensees were in the process of effectively addressing Y2K issues and were undertaking the actions necessary to achieve Y2K readiness in accordance with the GL 98-01 target date.
In an effort to verify and assess the effectiveness of licensee contingency planning, in May and June 1999, NRC audit teams conducted additional comprehensive audits focused on the area of Y2K contingency planning at 6 unaudited plants. The audits reviewed internal facility risks, extemal risks, individual component / system contingency planning, and integrated contingency plannhg. The results of these audits, as well as the results of the 12 sample audits, are avanalSe at NRC's Public Document Rooms and can also be found on the NRC's Y2K Web cite, <http //www.nrc. gov /NRC/ NEWS / year 2000.html>.
In addition to the NRC staff activities previously mentioned, regional NRC inspectors reviewed plant-specific Y2K program implementation and contingency activities at all nuclear power plant facilities. The inspectors used guidance prepared by the NRC Headquarters staff who conducted the 12 sample audits and the 6 contingency planning audits. On the basis of the reviews, the staff found that licensees were implementing Y2K programs in accordance with staff-approved industry guidelines. Additional details regarding NRC reviews and licensee j
readiness are contained in NUREG 1706," Year 2000 Readiness in U.S. Nuclear Power Plants," a copy of which is enclosed for your review.
j Mr. Mayer wanted to know whether power outages would occur if the Nation's reactors are shut i
down 30 days before January 1,2000, to give reactua, u.ne to cooi oown. On the basis of the NRC's audits, reviews, and licensee reports, the staff believes that none of the 103 operating nuclear power plants will have Y2K-related problems that directly affect the performance of i
safety systems and components necessary for plant operation. Therefore, the NRC is not planning to require licensees to shut down nuclear power plants. Nuclear power plant Heensees are interacting with the North American Electric Reliability Council (NERC) to develop electrical i
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I Honor:bb D. Young -
safety systems and components necessary for plant operation. Therefore, the NRC is not planning to require licensees to shut down nuclear power plants. Nuclear power plant licensees are interacting with the North America'. Electric Reliability Council (NERC) to develop electrical grid stability plans for generation and transmission. In this regard and based on the state of readiness from the activities discussed above, we have concluded that operation of nuclear facilities through the transition to the year 2000 is the prudent course of action. In its report to the Department of Energy," Preparing the Electric Power Systems of North America for Transition to the Year 2000," dated August 3,1999, NERC makes the following statement: "The current industry status leads to high confidence that nuclear generation plants will continue to reliably deliver their share of the nation's electricity needs well into the next century."
The NRC will continue to monitor progress at those plants that have remaining work to be performed and willindependently verify completion of these items, including Y2K contingency plans that specify procedures for dealing with unexpected events. The staff has developed guidance for appropriate regulatory actions to be taken for those facilities that were not Y2K reaoy by July 1,1999. As stated in the enclosed press release, the NRC has sent letters to those utilities with nuclear power plants that were scheduled to be Y2K ready after September 30,1999 to verify the status of readiness and the dates when the plants will be fully Y2K ready. However, two of these plants (South Texas Project Units 1 and 2) achieved readiness before September 30. We believe that all licensees will be able to operate their plants safely during the transition from 1999 to 2000 and beyond, and we do not believe that significant plant-specific action directed by the NRC to address possible Y2K problems is likely to be needed.
Additional Y2K information on all operating nuclear power plants is available at NRC's Y2K Web site at <http://www.nrc. gov /NRC/ NEWS / year 2000.html>. This Web site also identifies Y2K resources, notices, conferences, and other related information.
The NRC remains committed to its oversight of the nuclear power plant licensee Y2K readiness efforts in order to ensure safe operation of these facilities throughout 1999,2000, and beyond.
Please contact me if you have any additional questions on this rnatter.
Sincerely, Crw
: m. d by Frew su L.z William D. Travers Executive Director for Operations
 
==Enclosures:==
1.
NUREG-1706, " Year 2000 Readiness in U.S. Nuclear Power Plants" 2.
Press Release No. 99-207, "NRC Sends Letters to Utilities To Follow Up Y2K Readiness at Nuclear Power Plants" DISTRIBUTION: See next page Di$K/ DOCUMENT NAME: G:\\EElB\\MARCUS\\DYOUNGGT.WPD
* See previous concurrences To receive copy, indicate "C" o Copy w/o attachment / enclosure; "A" = Copy with attar:hment/ enclosure: *N' = None n
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10/13/99*
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Honorable D. Young,
safety systems and components necessary for plant operation. Therefore, the RC is not /
j are in'eracting with the North American Electric Reliability Council (NERC planning to require licensees to shut down nuclear power plants. Nuclear power electrical grid stability plans for generation and transmission. Licensees have identified rid instability as a factorto be included under extemal nsk as part of the Y2K contingency pladning effort. The industry and the NRC recognize the national importance of having availabl the broadest range of electrical generahng capability in order to cope with any unforseen Y2 impacts if they occur.
However, in its report to the Department of Energy, " Preparing the ElecJnc Power Systems of North America for Transition to the Year 2000," dated August 3,1999 NERC makes the following statement: "The current industry status leads to high confi nce that nuclear generation plants will continue to reliably deliver their share of the ation's electricity needs well
.into the next century."
The NRC will continue to monitor progress at those plants tha) have remaining work to be performed and will independently verify completion of these 'fems, including Y2K contingency plans that specify procedures for dealing with unexpected ents. The staff has developed guidance for appropriate regulatory actions to be taken fp those facilities that were not Y2K ready by July 1,1999. As stated in the enclosed pressfelease, the NRC has sent letters to those uns.c with nuclear power plants that were sch duled to be Y2K ready after 7
September 30,1999 to verify the status of readines and the dates when the plants will be fully Y2K ready. However, two of these plants (South exas Project Units 1 and 2) achieved readiness before September 30. We believe tha 11 licensees will be able to operate their plants safely during the transition from 1999 to 2000 add beyond, and we do not believe that significant plant-specific action directed by the NRC to address possible Y2K problems is likely to be needed.
Additional Y2K information on all opera}i g nuclear power plants is available at NRC's Y2K Web site at <http://www.nrc. gov /NRC/ NEWS / year 2000.html>. This Web site also identifies Y2K resources, notices, conferences, and'other related information.
The NRC remains committed to iJs oversight of the nuclear power plant licensee Y2K readiness efforts in order to ensure safe operation of these facilities throughout 1999,2000, and beyond.
' Please contact me if you hav 'any additional questions on this matter.
Sincerely, William D. Travers Executive Director for Operations
 
==Enclosures:==
NUREG-1706, " Year 2000 Readiness in U.S. Nuclear Power Plants" 2.
Press Release No. 99-207, "NRC Sends Letters to Utilities To Follow Up Y2K Readiness at Nuclear Power Plants" DISTRIB TION: See next page j
DISK / DOCUMENT NAME: G:\\EElB\\MARCUS'DYOUNGGT.WPD Q
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Honorable D. Young
* are interacting with the Nodh American Electric Reliability Council (NERC) to develop electrical grid stability plans for generation and transmission. Licensees have identifie grid instability as l
a factor to be included under external risk as pad of the Y2K contingency pl 6ing effort. The industry and the NRC recognize the national importance of having available broadest range of electrical generating capability in order to cope with any unforseen Y2K i s if they occur.
However, in its report to the Department of Energy, " Preparing the Electric ower Systems of North America for Transition to the Year 2000," dated August 3,1999, NE C makes the following statement: "The currentindustry status leads to high confidene that nuclear generation plants will continue to reliably deliver their share of the natio s electricity needs well into the next century."
The NRC will continue to monitor progress nt those plants that hav remaining work to be I
performed and willindependently verify completion of these items including Y2K contingency plans that specify procedures for dealing with unexpected event The staff has developed j
guidance for appropriate regulatory actions to be taken for thop facilities that were not Y2K ready by July 1,1999. As stated in the enclosed press releay6, the NRC has cent letters to those utilities with nuclear power plants that were schedulep to be Y2K ready after September 30,1999 to verify the status of readiness and }he dates when the plants will be fully Y2K ready. However, two of these plants (South Texas))roject Units 1 and 2) achieved readiness before September 30. We believe that all ligent.ees will be able to operate their plants
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rafely during the transition from 1999 to 2000 and befond, and we do not believe that significant j
plant-specific action directed by the NRC to address,possible Y2K problems is likely to be 1
needed.
Additional Y2K information on all operating nu lear power plants is available at NRC's Y2K Web site at <http://www.nrc. gov /NRC/ NEWS /ye3rdO00.html>. This Web site also identifies Y2K resources, notices, conferences, and oth r related information.
The NRC remains committed to its ov sight of the nuclear power plant licensee Y2K readiness efforts in order to ensure safe opera on of these facilities throughout 1999,2000, and beyond.
Please contact me if you have any dditional questions on this matter.
Sincerely, William D. Travers Executive Director for Operations
 
==Enclosure:==
Pr Release No. 99-207, "NRC Sends Letters to Utilities To Follow Up Y2K Pe'adiness at Nuclear Power Plants" j
/
i DISTRIBUTION: See next page j
/
DISK / DOCUMENT NAMk G:\\EElB\\MARCUS\\DYOUNGGT.WPD
* See previous concurrences l To #C:eive copy. Indicate "CYa Copy w/o attachmenUenclosure. "A* = Copy with attachment / enclosure 'W = None j
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Honorable D. Young ;
' ~ Nuclear power plant licensees are Interacting with the North American Electric Reliability ouncil
- (NERC) to develop electrical grid stability plans for generation and transmission. Licens es have identified grid instability as a factor to be included under external risk as part of the contingency planning effort.' The industry and the NRC recognize the national importan of having available the broadest range of electrical generating capability in order to cope ith any unforseen Y2K impacts if they occur. However, in its report to the Department of En gy,.
" Preparing the Electric Power Sysisms of North America for Transition to the Year 00," dated
- August 3,1999, NERC makes the dellowing statement: "The current industry stat leads to high conf;dence that nuclear generation plants will continue to reliably deliver their s re of the nation's electricity needs well into the next century."
The NRC will continue to monitor progress at those plants that have rempining work to be
. performed and will independently verify completion of these items, including Y2K contingency plans that specify procedures for dealing with unexpected events. T staff has developed guidance for appropriate regulatory actions to be taken for those fa ilities that wt.re not Y2K ready by July 1,1999. As stated in the enclosed press release,JH'e NRC has sent letters to those utilities with nuclear power plants that were scheduled t7 e Y2K ready after 6
September 30,1999 to verify the status of readiness and t ' dates when the plants will be fully sY2K ready.. However, two of these plants (South Texas P ect Units 1 and 2) achieved
~ readiness before September 30. We believe that all lic sees will be able to operate their plants safely during the transition from 1999 to 2000 and beydnd, and we do nct believe that significant plant-specific action directed by the NRC to addres possible Y2K problems is likely to be needed.
Additional Y2K 'information on s,ll operating nuclear power plants is available at NRC's Y2K Web site at <http://www.nrc. gov /NRC/ NEWS / year 2000.html>. This Web site also identifies Y2K resources, notices, conferences, and other'related information.
The NRC remains committed to its ove/
rsight of the nuclear power plant licensee Y2K readiness efforts in order to ensure safe operation of these facilities throughout 19S3,2000, and beyond.
Please contact me if you have any" additional questions on this matter.
_f
' Sincerely,
.. /
William D. Travers Executive Director for Operations L Enc:osure:
ress Release No. 99-207, "NRC Sends Letters to Utilities To Follow Up Y2K Readiness at Nuclear Power Plants"-
DISTRIBUTION: See next page.
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Honorable D. Young -
safety systems and components necessary for plant operation. Therefore, the NRC is not planning to require licensees to shut down nuclear power plants. Nuclear power plant licensees are interacting with the North American Electric Reliability Council (NERC) to develop electrical grid stability plans for generation and transmission. In this regard and based on the state of l
readiness from the activities discu: sed above, we have concluded that operation of nuclear facilities through the transition to the year 2000 is the prudent course of action. In its report to the Department of Energy," Preparing the Electric Power Systems of North America for Transition to the Year 2000," dated August 3,1999, NERC makes the following statement: "The current industry status leads to high confidence that nuclear generation plants will continue to reliably deliver their share of the nation's electricity needs well into the next century.'
The NRC will continue to monitor progress at those plants that have remaining work to be performed and will independently verify completion of these items, including Y2K contingency i
plans that specify procedures for dealing with unexpected events. The staff has developed j
guidance for appropriate regulatory actions to be taken for those facilities that were not Y2K ready by July 1,1999. As stated in the enclosed press release, the NRC has sent letters to i
those utilities with nuclear power plants that were scheduled to be Y2K ready after September 30,1999 to verify the status of readiness and the dates wh'en the plants will be fully Y2K ready. However, two of these plants (South Texas Project Units 1 and 2) achieved j
readiness before September 30. We believe that all licensees will be able to operate their plants I
safely during the transition from 1999 to 2000 and beyond, and we do not believe that significant plant-specific action directed by the NRC to address possible Y2K problems is likely to be
(
needed.
Additional Y2K information on all operating nLiclear power plants is available at NRC's Y2K Web l
site at <http://www.nrc. gov /NRC/ NEWS / year 2000.html>. This Web site also identifies Y2K resources, notices, conferences, and other related information.
The NRC remains committed to its oversight of the nuclear power plant licensee Y2ts readiness efforts in order to ensure safe operation of these facilities throughout 1999,2000, and beyond.
i Please contact me if you have any additional questions on this matter.
Sincerely, l
illiam.Traver Executive Director for Operations
 
==Enclosures:==
1.
NUREG-1706, " Year 2000 Readiness in U.S. Nuclear Power Plants" 2.
Press Release No. 99-207,"NRC Sends Letters to Utilities To Follow Up Y2K Readiness at Nuclear Power Plants"
 
NUREG-1706 Year 2000 Readiness in U.S. Nuclear Power P. ants U.S. Nuclear Regulatory Conunission Office of Nuclear Reactor Regulation
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ENCLOSURE 1
 
NUREG-1706 Year 2000 Reaciness in E
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ENCLOSURE 1
 
NUREG-1706 Year 2000 Readiness in U.S. Nuclear Power Plants Manuscript Completed: September 1999 Date Published: September 1999 Prepared by M.E. Waterman, D.W Spaulding Division of Engineering Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
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ABSTRACT-
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De NRC staff has aseenaed the year 2000 -
systems and digital embedded components
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(Y2K) endiness activities ofits nucl:ar -
that support plant operations are "Y2K power plant licensees. The staff then ready." Licensees of the remaining 28 plants
-integrated those findings with the July 1, have additio'nal work to' complete on a few 1999, licensee responses to Generic Letter =
non-safety-related systems or components
. (GL) 98-01, Supplement 1, " Year 2000 that support plant operations and-Readiness of Computer Systems at Nuclear
:- administrative functions. These licensees -
. Power Plants," and licensee followup reports -
submitted dates for completing Y2K 1
on Y2K readiness. All licensees of NPPs readiness at their plants. The statf will verify reported in response to GL 98-01, completion of the remaining Y2K items at
' Supplement 1, that there are no Y2K-related each of these 28 plants. Typically, the problems that directly affect the performance licensee is completing the remainingY2K i
ofsafety systems. The Nuclear Regulatory work after July 1,1999, because the work Commission has confirmed by onsite reviews -
requires a plant outage scheduled for the fall that at all 103.U.S. nuclear power plants there '
. of 1999 or because the licensee is waiting for are no Y2K-related problems that affect the..
delivery of a replacement component. All performance of safety systems needed to plants are expected to be Y2K ready by safely shut down the plants. As of.
December 16,1999. The staffdoes not September 1,1999, the staff finds that anticipate directing any ple.nt-specific
. licensees of 75 of the 103 plants have -
regulatory actions.
- completed all activities to ensure computer -
l L
iii NUREG-1706
 
CONTENTS Page ABSTRACT................................................................. iii EXECUTIVE S UMMARY.................................................... vii ACKNOWLEDGM ENTS...................................................... xi ABB REVIATIONS.......................................................... xiii 1 INTRODUCTION........................................................... !
2 B A CK G ROUN D........................................................... 3 3 REVIEW AND INTEGRATION APPROACH..........'......................... 7 3.1 Site Review Methodology.............................................. 7 3.2 Integration Process................................................. 8
(
4 REVI EW RES ULTS........................................................ 9 4.1 Assessment of NPP Licensee Y2K Programs.............................. 9 4.2 Review of Licensee Responses to GL 98-01, Supplement 1................. 10 5 FUTURE ACTIVITIES...................................................... 15 6 CONC LU S ION S..........,............................................... 17 Figures Figure le NRC Activities Related to NPP Y2K Readiness............................ 6 Figure 2. Systems and Components Remaining to be Remediated..................... 13 Figure 3. Status of NPP Y2K Readiness.......................................... 13 Tables l
Table 1 NPP Y2K Readiness Status as of September 1,1999........................... I 8 j
Table 2 NPP Systems and Components Requiring Completion of Year 2000 Readiness Activities as of September 1,1999........................................ 22 v
NUREG-1706 o
 
EXECU11VE
 
==SUMMARY==
This report provides the status of nuclear or administrative systems. Most NPP safety powerplant(NPP) Year 2000(Y2K) systems that ensure an NPP is maintained in readiness as of September 1,1999, and a safe condition are controlled by analog describes NRC's determination of Y2K rather than digital systems and, consequently, readiness in operating U.S. NPPs. 'Ihe staff are not affected by Y2K issues.
assessment of Y2K readiness consisted of independently evaluating NPP licensee i2K Since 1996, the NRC b lun working with readiness program processes, reviewing NPP licensees to ensure that NPP systems are licensee responses to NRC requests for Y2K ready before year 2000. To ensu" ht reporting Y2K readiness, and combining the licensees of operating U.S. NPPs were.. ware icsults on these assessments to achieve of the Y2K issue, the NRC issued assurance that each NPP will operate safely Information Notice (IN) 96-70, " Year 2000 during the transition from 1999 to 2000 and Effect on Computer System Software," on on other Y2K-sensitive dates.
December 24,1996. In IN 96-70, the staff described the potential problems that nuclear The Y2K computer problem pertains to the facility computer systems and software might potential for date:related problen>s that may encounter during the transition from 1999 to occur in a software system or an embedded 2000.
digital component. Among these problems are not representing the year accurately, not In 1997, the Nuclear Energy Institute (NEI) recognizing leap years, and erroneous date-took the lead in developing industry-wide based or time-based calcu!ations. An guidance for addressing Y2K issues in the example of a date-related problem is nuclear power industry and, with cooperation interpreting "00" as the year 1900 rather than from the Nuclear Utility Software 2000, which could cause some computer Management Group (NUSMG), issued systems to malfunction.
NEI/NUSMG 97-07, " Nuclear Utility Year 2000 Readiness." Subsequently, to address In NPP safety systems and plant operations contingency planning, NEI and NUSMG systems that use software systems or issued NEI/NUSMG 98-07, " Nuclear. Utility embedded components, the Y2K problem Year 2000 Readiness Contingency Planning."
could cause an event that could lead to an In Generic Letter (GL) 98-01 and its NPP shutdown, or could affect systems that supplement, " Year 2000 Readiness of either report post-shutdown plant status or Computer Systems at Nuclear Power Plants,"
that support emergency data collection the NRC accepted the guidance presented in capabilities. Additi6nally, to the extent that a NEI/NUSMG 97-07 as an appropriate Y2K deficiency could cause an NPP methodology for addressing Y2K readiness shutdown or transient, the resulting loss of in NPPs. The staff also determined that the electrical generation could introduce an guidance presented in NEl/NUSMG 98-07 elect-ical distribution grid instability and a was appropriate far developing (1) system resulting loss of offsite power. Y2K issues Y2K contingency plans, (2) contingency also have the potential to affect plant support plans for internal facility risks, (3) vii NUREG-1706
 
me consistent with industry guidance.
NPPs that are not scheduled to be Y2K ready
~
on the corresponding date, and whose non-
' By July 1,1 P9, he=== for all 103 -
systems could only affect adminier tive ra operating NPPs reported the status of their functions at the plant.
Y2K eendiness to theNRC. Regarding NRC'shighestpriority-thei J ;.jei The NRC issud a preliminary report on NPP performance of NPP safety systems -aH
.Y2K readiness on July 19,1999. That report licensees reported that Y2K readiness efforts integrated the initial findings of NRC staff
- are completed,'and.that no remaining Y2K.
reviews oflicensee Y2K readiness programs related problems exist that could affect the
. at all 103 NPPs with the licensee responses to
. performance of safety systems or the
. GL 98-01, Supplement 1. Most of the NRC capability for safely shutting down an NPP, onsite reviews officensee Y2K programs at -
Licensees for 68 of these plants had also the 103 NPPs presentedsufficient information for the staff to conclude licensee completed the next higher order of Y2K' ra=A-= as ofJuly 1,1999, stating that all of
.Y2K readiness programs were consistent their computer systems that support plant with staff acceptable industry guidance.
operations are Y2K ready. Licensees farthe However, the staff could not complete semaining 35 plants reported that, to be fully '
reviews oflicensee programs for 14 NPPs Y2K ready, additional work would be because these licensees had not finished some -
completed on a few non-safety-related phase of Y2K readiness preparation by the
: systems or components that support plant date of the starts review. The staff
. operations and administrative functions.
conducted followup reviews cf these Typically, the remaining work to be licensees by August 13,1999. The staff -
completed has been scheduled for outages in found that in the one case of Cooper Nuclear.
the fall, or upon delivery of replacement '
Station (CNS), the licensee had not components.
completed its integrated contingency plan (ICP) by July 1,1999 (CNS safety-related The status of NPP Y2K readiness, including systems are Y2K ready), although CNS had the NPPs that are Y2K ready, is shown in the been previously listed as Y2K ready. The
~ figure. The solid gray regions of the chart -
staff has added this licensee to its list of represent the number of NPPs that are already ;
licensees to be tracked through completion of
..Y2K ready or are scheduled to be Y2K ready.
their Y2K readiness program.
on the correspondirig date. The diagonally '
striped regions of the chart represent the Additionally, during a planned audit ofits number of NPPs that are not scheduled to be NPP.Y2K inventory, the licensee for CNS Y2K ready on the corresponding date, and.
discovered three components that were that have systems to be remediated that could improperly addressed by its contractor. One affect power operations. - (Remediation is -
component was in an operational support defined in NEl/NUSMG 98-07 as the process system and had been incorrectly classified as
' of retiring, replacing, or modifying software
.Y2K compliant when it was actually Y2K 1. or devices that have been determined to be ready. The other two components were -
affected by the Y2K problem.) The white -
measurement and test equipment regions of the chart represent the number of -
(administrative support systems). None of ix NUREG-1706
 
c l
.e ACKNOWLEDGMENTS Many NRC staff helped develop the guidance people made significant contributions to this used for reviewing liccance Y2K prograna, report. Many other NRC staff were generous
' helped with the initial reviews and followup with their experience and guidance; and reviews oflicensee Y2K programs, and without them this report could not have been helped prepare this report. The following prepared.-
Division of Engineering Office of Nuclear Reactor Regulation S. V. Athavale Af. C. Gareri J. L Afauck A. L'Bryant N. H. King-Wertman W. K Afortensen J A. Calvo B. S. Afarcus J. R. Strosnider, Jr.
M. Chiramal E. C. Afarinos R. H. Wessman J. A. Crutchley
~
Other NRC Advisony Staff B. A. Calure T. G. Hilt:
Af. C. Nolan A. G. Hansen G. R. Klingler D. V Pickett E. A. Hayden F. J. Afiraglia, Jr, R. F. Sanders NRC Region I Support R. A. Blough D. C. Cullison L Af. Harrison W. A. Cook L A. Dudes T. R. Hipschman R. S. Barkley J. G. England R. J. Summers C. G. Cahill A. L Della Greca NRC Region II Support D. E. Billings G. J. AlcCoy S B. Rudisail F. Jape N. Aterriweather C. F. Smith K D. Landis C. W. Rapp R. D. Telson xi NUREG-1706
 
ABBREVIATIONS ARERAS atmospheric radioactive effluent release assessment system BIOS basic input output system CNS Cooper Nuclear Station ERDS-emergency response data system ERFCS emergency response facility monitoring and trending computer system FDAS fire detection and alarm system GENE General Electric Nuclear Energy GL
. generic letter ICP integrated contingency plan ICS-integrated computer system IN information Notice
: MAS main annunciator system MIDAS meteorological information and dispersion system NEI Nuclear Energy Institute
'NPP Nuclear Power Plant NRC Nuclear Regulatory Commission NUSMG Nuclear Utility Software Management Group PBAPS Peach Bottom Atomic PowerStation RMS
. radiation monitoring system SECY Letter frcm NRC staff to Commission SPDS safety parameter display system SRMl staff requirements memorandum
' Tl temporary instruction
~Y2K Year 2000 xiii NUREG-1706
 
_~
1 INTRODUCTION This report presents the status of Year 2000 The staffincorporated these two sources of (Y2K) activities at the 103 operating U.S.
information regarding Y2K readiness into nuclear power plants (NPPs) as of this mport. Followup activities and the September 1,1999. The status was scheduled comp'etion dates for the NPPs not determined by integrating the results of NRC yet declared to be fully Y2K ready are also staffreviews of licensee responses to Generic presented I. ;.,
Letter (GL) 98-01, Supplement 1, " Year 2000 Readiness of Computer Systems at Nuclear In Section 2, " Background," the staff Power Plants," with the findings of regional summarizes the nature of the Y2K problem, staff reviews conducted at each NPP site.
the history of NRC activities related to resolution of this problem in the nuclear The regulatory framework regarding issues power industry, and the scope of activities such as enforcement policy and NRC conducted by the staff to verify that plants contingency actions to suppon the transition will be Y2K ready before the end of 1999. In from 1999 to 2000 will be addressed in a Section 3, " Review and Integration supplement to this repon.
Approach," the staffdescribes the methodology it used to perform onsite NRC regional staff conducted reviews of reviews oflicensee Y2K activities for each of
)
licensee Y2K activities at each NPP site the 103 NPPs and the methodology it used to 1
following the guidance of Temporary integrate the results of these reviews with the Instruction (TI) 2515/141, " Review of Year licensee responses to GL 98-01, 2000 (Y2K) Readiness of Computer Systems Supplement 1. In Section 4, " Review at Nuclear Power Plants." NRC staff reviews Results," the staff summarizes the findings of verified that licensees were implementing its reviews oflicensee Y2K program Y2K programs and pro esses consistent with activities and the licensee responses'to the industry guidance in NEl/NUSMG 97-07, GL 98-01, Supplement 1, and lists the
" Nuclear Utility Year 2000 Readiness," and scheduled completion dates for the plants not NEbNUSMG 98-07, " Nuclear Utility Year
.yet declared Y2K ready. In Section 5, 2000 Readiness Contingency Planning,"
" Future Activities," the staff describes the both of which have been found acceptable by activities it will perfomi in the months the staff. Additionally, the NRC received between September 1999 and March 2000.
responses to GL 98-01, Supplement 1, from in Section 6, " Conclusions," the staff presents licensees of all 103 operating NPPs.
its conclusions about Y2K readiness in U.S.
NPPs.
I NUREG-1706
 
2 BACKGROUND The Y2K computer problem pertains to the regulatory activities is presented in Figure 1.
potential for date-related problems that may Since 1996, the NFC has been working with arise in a software system or an embedded NPP licensees to ensure that NPP systemt are digital component. Among these problems Y2K ready before 2000. To ensure that are not representing the year properly, not licensees of operating U.S. NPPs wer-aware recognizing leap years, and erroneous date-of the Y2K issue, the NRC issued based or time-based calcuhtions. An Information Notice (IM) 96 70, " Year 2v00 example of a date-related problem is reading Effect on Computer System Software," on
*00" as the year 1900 rather than 2000, which December 24,1996. In IN 96-70, the c.aff could cause some computer systems to described the patt.ntial problems that nuclear malfunction. A software system or an facility computer systems and softwart might embedded digital component that is encounter during the transition from 1999 to determined to be "Y2K compliant" accurately 2000. The NRC sent copies of this processes date and time da:a (including information notice to all U.S. NPP licensees, calculating, comparing, and s.equencing data) fuel cycle facility licensees, r.a4 nuclear from, into, and between the years 1999 and materials lice.ssees.
2000. A software system or an embedded digital component that is determined to be in 1997, the Nuclear Energy Institute (NEI)
"Y2K ready" performs its functions correctly, took the lead in develop:ng industry-wide althcugh the system or component is not guidance for addressing Y2K issues in the Y2K c1mpliant.
nuclear power industry and, with cooperation from the Nuclear Utility Software in NPP safety systems and plant operations Management Group (NUSMG), issued systems that use software systems or NEI/NUSMG 97-07. Subsequently, m embedded digital components, the Y2K August 1998, NEI and NUSMG issued problem could cause an event that could lead NEl/NUSMG 98-07. In GL 98,01 and its to an NPP shutdown, or could affect systems supplement, the NRC accepted the guidance that either report post-shutdown plant status presenad in NEl/NUSMG 97-07 as or that support emergency data collection appropriate methodologies for addressing capabilitics. Additionally, to the extent tha: a Y2K readiness in NPPs.
Y2K deficiency could cause an NPP shutdown or transient, the resulting loss of In GL 98-01, the NRC requested that all electrical generation could introduce an holders of operating licenses for NPPs infonn electrical distribution grid instability and a the NRC of steps they were taking to ensure resulting loss of offsite power. Y2K issues that computer systems will fune on properly d
'can also affect plant support or administrative by 2000. Every licensee responded to systems. Most NPP safety systems are GL 98-01, stating that an NRC-accepted controlled by analog systems and, program (NEl/NUSMG 97-07)had beca consequently, are not affected by Y2K issues.
adopted, the program addressed both safety-related and non-safetv-relateystems and A timeline of significant NRC Y2K components, and the plants would be Y2K 3
NUIEG-1706
 
'On June 22,1999, in SECY-99-162, " Policy programs. Between September 1999 and for Regulatory Actions for Licensees of December 1999, the staff will continue to Nuclear Power Plants hat Have Not review the remaining licensee Y2K activities Completed Year 2000 Readiness Activides,"
as they are compIeted. These activities are the NRC staffproposed apolicy for discussed in Section 5.
regulatory actions it would take for licensees ofnuclear power plants that had not The staff also addressed decommissioned completed their Y2K teadiness activities NPPs and concluded that the licensees of the (including remediation and contingency 21 decommissioning nuclear power plants are planning) by July 1,1999. This policy is also implementing Y2K activities that address discussed in Section 5.
equipment and systems important to safety, so that there is reasonable assurance of By July 1,1999, the statThad received adequate protection to public health and responses to GL 98 01, Supplement 1, from safety. A complete dis:ussion of the status of licensees of all 103 operating NPPs. As the inspection activities for decommissioned 4
described in Section 4, the staff reviewed plants is outside the scope of this repon. The these responses and integrated the findings of sections that follow address Y2K readiness in these reviews with the findings of the staffs the 103 U.S. operating NPPs.
I onsite reviews of ficensee Y2K readiness l
i i
1 l
l 1
5 NUREG-1706 l
1 J
 
3 REVIEW ANDINTEGRATION APPROACH This section describes the methodology used Planning andInitial Assessment Management Planning
)
by the NRC staff to conduct Y2K reviews at Documentation each of the103 operating NPP sites, and in Implementation Plans integrate the review findings with the Initial Assessment licensee responses to GL 98-01, Supplement 1.
Detailed Assessment System / Component Detailed 3.1 Site Review Methodology Assessment
. System / Component Remediation The NRC reviews at each NPP site focused System / Component Testing and on the process followed by the licensees to a
achieve Y2K readiness to ensure these Validation System / Component Notification processes were consistent with the guidance presented in NEl/NUSMG 97-07 and NEI/NUSMG 98-07. The staffoffered Contingency Planning System /Co nponent Contingency review guidance in Temporary Instmetion (TI) 2515/141, " Review of Year 2000 (Y2K)
Planning Contingency Planning for Intemal Readiness of Computer Systems at Nuclear Power Plants." This TI is available on the Facility Risks Contingency Planning for Extemal NRC web site <http://www.nre.cov>. The TI guidance contained 452 acceptance criteria Risks Integrated Contingency Planning that were based on guidance presented in NEI/NUSMG 97-07 and NEI/NUSMG 98-07. To guide the staff reviewers, the To review detailed assessment activities, the review criteria in the Tl were arranged in a staff selected one system or a component checklist format. The staff selected this from each of the following six plant system format to ensure that the reviews would be classes:
Reactor Protection System and comprehensive and conducted consistently at each NPP site. Additional guidance for Engineered Safety Features System applying the acceptance criteria was (including emergency diesel presented to NRC reviewers in training generators) f sessions and in telephone calls between the Feedwater System and Balance of reviewers and NRC headquarters staff.
Piant Systems Radiation Monitoring Systems Emergency Notification Systems The acceptance criteria were divided into Plant Process Computer Systems three major areas of Y2K readiness activities:
Plant Security Systems (1) planning and initial assessment, (2) detailed assessment, and (3) contingency planning. These three major areas are further These six classes of plant systems were subdivided into more specific areas of chosen to ensure that the NRC staff could acceptance criteria as follows:
review any system or component during the 7
NUREG-1706
 
4 REVIEW RESULTS
' Ibis section summarizes the staff's reviews NPPs, only detailed assessment activities at of all 103 operating NPPs, and integrates the two NPPs, and only contingency planning review findings with the licensee responses to activities at four NPPs. The staffperformed GI 98-01, Supplement 1.
follewup reviews at the following NPPs:
4.1 Assessment of NPP Licensee Y2K Arkansas Nuclear One, Units 1 and 2 l
Programs Beaver Valley Power Station, Units 1 and 2
)
As described in Section 3.1, the staff Cooper Nuclear Stadon i
reviewed licensee Y2K program Grand GulfNuclear Station, Unit I implementations at all 103 operating NPP Indian Point, Unit 2 sites between April 1999 and July 1999. In Prairie Island Nuclear Generating some cases, the staffperformed reviews Plant, Units 1 and 2 before the licensees had completed all phases River Bend S*.ation, Unit 1 of their Y2K programs. For example, many Three MileIsland Nuclear Station, licensees had not planned to complete Unit I integrated contingency planning activities Vermont Yankee Nuclear Power until late June 1999, but the staffreviewed Station their Y2K program implementation in May or Virgil C. Summer Nuclear Station, I
carly June. Consequently, these licensees Unit I could not provide the staff with sufficient Waterford Steam Electric Station, information at the time of the initial review Unit 3 for the staff to conclude that the licensee's integrated contingency planning process was in 13 of the 14 reviews, the staff was able to consistent with industry guidance.
conclude that the licensee programs were consistent with industry guidance.
The staff found that of the 103 operating NPPs 14 required additional followup
' In reviewing the integrated contingency reviews to evaluate more fully each phase of planning activities at Cooper Nuclear Station the licensee's Y2K program. The staff (CNS), the sta'f determined that the conducted followup reviews between July I licensee's integrated contingency plan (ICP) and August 13,1999, and addressed only was not sufficiently complete to conclude those portions of the applicable Tl 2515/141 that CNS was fully Y2K ready, although all acceptance criteria that the staff could not safety-related systems and components were evaluate during the its initial review, or that Y2K ready. The licensee presented a date of required additional clarification regarding the September 20,1999, for comple#ing the ICP.
manner ofimplementing certain Y2K The staff will review the CNS ICP upon its activities. Specifically,the staffreviewed completion.
detailed assersment activities and contingency planning activities at eight Additionally, during a planned audit ofits NPP Y2K inventory, the licensee for CNS 9
NUREG-1706
 
y condition of the plant license or as a result of remains nearly constant during July and a regulatory commitment, but are not relied August, decreasing fmm 28 systems on July upon to maintain the plant in a safe condition.
1,1999, to 21 systems on September 1,1999.
Between September I and November 1, Admiai*stive support systems are non.
1999, the number of operational suppo:t rafety-related systems that support systems that are scheduled to be Y2K ready 1 administrative functions at the plant. For.
. decreases by 16 systems. Of the remaining example, a meteorological system that' five systems on November 1,1999, four produces plaut environmental information, systems are scheduled to become Y2K ready and a system for aracking personnel radiation
_during November 1999 (three systems in exposures are administrative support systems.
Salem Nuclear generating Station, Unit 1; These systems a.re non-safety related and and one system in Comanche Peak Steam generally are used to facilitate activities such Electric Station, Unit 1). The remaining as recording personnel activities and system is the Joseph M. Farley Nuclear Plant, qualifications, maintaining equipment Unit 2. digital electrohydraulic controller, inventory records, and archiving records of which is discussed in Section 4.2.2.
I
; p.lant operations.
As shown in Figure 2, the number of l 4.2.1 NPP System Y2K Readiness administrative support systems that are scheduled to be remediated decreases from
! For plants that are not Y2K ready, the total 32 systems on July 1,1999, to 16 systems on number'of operational support systems and '
October 1,1999. The remaining 16 systems administrative support systems that have not are scheduled to be remediated during l
been remediated are shown in Figure 2. In October 1999. This' trend reflects licensee this figure, the number of operational support activities being scheduled for fall outages and systems that are scheduled to become Y2K software upgrade schedules.
ready are shown in the diagonally striped regions on the chart. The number of 4.2.2 NPP Y2K Readiness administrative support systems that are scheduled to become Y2K ready are shown in The number of NPPs expected to be Y2K the white regions on the chart.
ready as a function of date are shown in Figure 3. The gray regions of the chart Indudsd in the operational support systems is represent the number of NPPs that are already the CNS ICP that the staff determined during Y2K ready os meheduled to be Y2K ready a follow-up review was not completed by ~
on the corresponding date. The diagonally July 1,1999 (see discussion about CNS in striped regions of the chart represent the -
Section 4.1). The staff, therefore, added this number of NPPs that are not scheduled to be licensee to the staffs list oflicensees to be Y2K ready on the corresponding date and tracked through completion of their Y2K have operational support systems to be readiness program remediated. The white regions of the chart represent the number of NPPs that are not The number of operation # support systems scheduled to be Y2K ready on the that are scheduled to become Y2K ready corresponding date, and that have only I1 NUREG-1706 5
~
m
 
35 -
E,
$ OperationalSupponSystems 30 -
[ Adminis:rativeSupportSystems a 25 4 All safety-related systems Y2K ready f
S
$20, l
)
d b
j15-E
$ 10 -
fil n
Io]
h IC1
_E Ic1 7/1/99 8/1/99 9/IM9 10/1/99 11/1/99 12/1/99 12/16/99 Figure 2. Systems and Components Remaining to be Remediated
~~ Administrative Systems l
~
h Operational Support Systems 140 -
E Y2K Ready
^ " * *
'78***
*** Y
. 120 -
I
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7/1/99 8/1/99 9/1/99 10/1/99 11/1/99 12/1/99 12/16/99 Figure 3. Status cf NPP Y2K Readiness i
13 NUREG-1706
\\
 
5 FUTURE ACTIVITIES In May 1999, the NRC staff developed an readiness activities (including remediation interim enforcement policy in SECY 99-135, and contingency planning) by July 1,1999.
" Interim Enfon:ement Policy Regarding The proposed policy addressed NRC Enforcement Discretion for Nuclear Power commitments to Congress that the agency Plants During the Year 2000 Transition." In would assess li;ensees' Y2K preparedness SECY-99-135, the stafTsought the and determine the need for plant-specific Commission's approval to revise the NRC regulatory action, up to and includir; the enforcement policy for NPPs to add an issuance of shutdown orders. The proposed interim policy to exercise enforcement policy supplemented NRC Y2K contingency discretion for noncompliance with license plans and the NRC's policy on enforcement conditions, including technical specifications, discretion for Y2K-related issues, which was during theY2K transition or rollover periods.
described in SECY-99-135.
The Commission reviewed the interim enforcement policy, and presented guidance The Commi, ion approyed the proposed for its implementation in a staff requirements policy with supplemental guidance in an memonmdum(SRM) dated July 8,1999, SRM dr.ted August 5,1999, " Staff "StafTRequirements - SECY 99-135 Requirements - SECY-99-162 -Policy for
-Interim Enforcement Policy Regarding Regulatory Actions for Licensees of Nuclear Enforcement Discretion for Nuclear Power Power Plants That Have Not Completed Year Plants During the Year 2000 Transition."
2000 Readiness Activities." The guidance The NRC published the interim enforcement required that the staff take regulatory actions, policy in the Federal Register in July 1999.
where appropriate, sufficiently in advance of The staffis i.mplementing procedures for this the Y2K rollover date (i.e., as soon as policy and is assigning appropriate staff as September 30,1999, but no later than part on u.e NRC's contingency planning December 1,1999) to ensure that plants are effort.
in a safe, stable state during the Y2K transition. Additionally, the staff will The staff continues to monitor licensee provide current and projected completion progress, and will verify the Y2K readiness dates for Y2K readiness, of each system and embedded digital component as they are finished. The staff The staff will continue to monitor licensee will discuss these verification activities in schedules reported in their GL 98-01 inspection reports.
responses and will determine whether additional actions are required. On the basis On June 22,1999, in SECY-99-162, "Palicy of current licensee schedules for finishing for Regulatory Actions for Licensees of Y2K activities, the staff does not anticipate Nuclear Power Plants That Have Not directing plant-specific actions.
Completed Year 2000 Readiness Activities,"
the NRC staff proposed a policy for Additionally, the staff will maintain a web regulatory actions it would take for licensees site, <http://www nrc.cov>, to keep the of NPPs that had not completed their Y2K public abreast of all activities related to NPP 15 NUREG-1706
 
6 CONCLUSIONS
- As of September 1,1999,the staffconcludes before the transition from 1999 to 2000. The (1) no Y2K concems remain that could affect NRC staff will verify completion oflicensee the performance ofsafety systems, (2) readiness activities as they are completed.
licensees for all 103 NPPs are following NRC-acceptable industry guidance for The NRC believes that licensees will be able
. achieving Y2K readiness,(3) 75 NPPs are to operate all 103 NPPs safely during the Y2K ready, (4) 28 NPPs are not Y2K ready transition from 1999 to 2000, and does not and (5) the completion schedules for the anticipate the need to direct any significant remaining few non-safety-related items that plant-specific actions.
are still not Y2K ready will be accomplished -
6 I
NUREG-1706
 
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: 1. REPC:4T NUMBER tha**=e w ime, u a va.s e.a =,,
11st.
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NUREG 1706 Year 2000 Reedmess in U.S. Nucieer Power Plan <s M REPORT N ED 1
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: 4. FIN OR GRANT NuhiB1R' ''
s AtrTHOR(s) 6 TYPE OF REPORT Michael E. Waterman, Deirdre W. Spaulding Technical
: 7. PERioo COVEREo rtnckamp ouey Jan.1996 - March 2000 O PERF0RMNjoRGAN N. NAME AND ADoRESS (#Nac. rum Owean, oece w Repoa, u 8 Nwsw neg% c,,,irsman, vid me6ng acewss. scontraw Division of Engineering Office of Nuclear Reactor Regulation U. S. Nudear Regulatory Commi:,sion Washington, DC 20555-0001
: 9. SPONSORING ORGANLZATION NAME ANo ADoRESs tu NRc type *seme as abose', econtrecor, powoe NecOnnun. Once ar nepan US NuoeerPegaway comnnsson, and meene ennene)
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S:me as above 10 SUPPLEMENTARY NOTES
: 11. ABSTRACT (200 eens y anos)
This report describes the results of NRC staff reviews of licensee nuclear power plant (NPP) year 2000 (Y2K) readiness cctivities conducted at each nuclear power plant. The results of the staff reviews are in!@ grated with the July 1,1999, licensee r:sponses to Generic Letter (GL) 98-01, Supplement 1, " Year 2000 Randiness of Computer Systems at Nuclear Power Plants," and licensee follow-up reports of Y2K readiness. All licensees of NPPs reported in response to GL 98-01, Supolement 1, that there are no Y2K-related problems that directly affect the performance of safety systems. The Nudear Regulatory Commission has confirmed by onsite reviews that at all 103 U.S. nudear power plants there are no Y2K related problems which affect the perfornance of safety systems needed to safely shut down tne plants. As of September 1,1999, the staff condudes that licensees of 75 of the 103 plants have completed allactivities to ensure computer systems and digital l
Embedded components that support plant operations are "Y2K ready. Licensees for 28 plants have additional work to complete on a few non-safety systems or components that support plant operations and administrative functions. These licensees provided scheduled completion dates for their plants. Typically, the licensee is completing the rernainingY2K work
)
eft:r July 1,1999, because the work requires a plant outage scheduled for the fall of 1999 or because the licensee is waiting for delivary of a replacement component. Alllicensees are expected to be Y2K ready by December 16,1999.
I 12 KEY WoRDS/DESCRIPTORS (ust woros or pareses met we essst reseceem m ecenng tne reporJ 13 AmtAsitih STATMNT Yew 2000 unlimited Y2K 14 sEcuRITYcLASSIFICATION Y2K readiness Y2K Ready (N 491 Y2K Compliant undassified Nuclear power plant
(*8 "'"
Contingency Plan Contingency Planning unclassified it s.,ueER OF et.GEs
: 16. PRICE NRC 7 ORM 335 (24W ha tarm was eim.trancear prtakand by Ewe Fooersi Fams ene
 
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Nuclear Regulatory Cemmissian Office of Public Affairs Washington DC 20555 Telephone: 301/415-8200 E-Mail:,opa@nrc. gov News Release Index l News and Information l NRC Home l E-mail No. 99 207 FORIMMEDIATE RELEASE (Tuesday, September 28,1999) i NRCSENDS LETTERS TO UTILITIES TO FOLLOW UP Y2KREADINESS ATNUCLEAR POWER PLANTS The Nuclear Regulatory Commission has sent letters to those utilities with nuclear power plants that are scheduled to be "Y2K ready" aftet September 30 to verify the status of readiness and the dates when plants will be fully Y2K ready.
There are no Y2K-related problems alTecting the performance of safety systems needed to safely op or shut down at any of the 103 nuclear power plants. By September 30,91 of these plants are scheduled to have completed all remaining Y2K work for the:r computer systems that support plant operation. In addition, they will have contingency plans in place. The remaining 12 plants have additional work to complete on a few non-safety systems or devices, to be fully Y2K ready. These plants are continuing t progress toward Y2K readiness.
As a follow-up to July 1 Y2K readiness reports from licensees, the NRC has sent letters to these 12 plants to ensure that all deficiencies are repaired before the Y2K transition. In order to schedule NRC mspections, licensees were asked to provide any changcs to the scope of remaining Y2K work or to the projected completion date (previously provided to NRC July 1). The NRC sent letters to the following plants:
Plant Name Nearest City Y2K Ready Date Comanche Peak Unit 1 Glen Rose, TX 11/30/99 Comanche Peak Unit 2 Glen Rose, TX 10/30/99 Cook Units 1 & 2 Bridgman, MI 10/30/99 Hope Creek Hancocks Bridge, NJ 10/29/99 Farley Unit 2 Columbia, AL 12/16/99 Peach Bottom Unit 3 Delta, PA 10/31/99 Salem Unit 1 Hancocks Bridge, NJ l1/6/99 Salem Unit 2 Hancocks, Bridge, NJ 10/29/99 South Texas Units 1 & 2 Bay City, TX v31/9y Three MileIsland Unit 1 Middletown, PA 10/21/99 Typically, the remaining work will be completed in conjunction with a scheduled plant outage or when a replacement component is delivered. The NRC will continue to monitor and verify completion of Y2K activities at these plants.
ENCLOSURE 2 1 or2 10/7/199910:06 AM
 
Detdis of the remaining work are provided in an NRC report, NUREG 1706, " Year 2000 Readiness in -
U.S. Nuclear Power Plants." It is avail;ble on the NRC's Y2K web site a'
! http://www.nre. gov /NRC/ NEWS / year 2000.html.
g Tise "Y2K" problem refers to a computer's potential inability to recognize dates beginning with January 1,2000, and beyond. It arises from computer programs that use two-digit numbers to represent a.
calendar year (such as "98" for 1998). For example, a computer system could read "00" as 1900, rather thar. 2000, potentially causin ; a computer system to malfunction. "Y2K ready" means that functions provided by a computer will M carried out successfully with the coming of the Year 2000.
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** GRN CRC NO: 99-0789 Travers, EDO DESC:
ROUTING:
NUCLEAR POWER PLANTS Y2K COMPLIANCE (Ed Mayer)
Travers Paperiello Miraglia b@
Burns DATE: 09/29/99 Congel, IRO Beecher, OPA ASSIGNED TO:
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Satorius, OEDO AL Collins SPECIAL INSTRUCTIONS OR REMARKS:
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AUTHOR:.
DON. YOUNG, REP
: AFFILIATION:
U.S. HOUSE OF REPRESENTATIVES ADDRESSEE:
RhTHBUN l LETTER DATE:
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FILE CODE: R&D 19
 
==SUBJECT:==
NUCLEAR POWER PLANTS Y2K COMPLIANCE ~
ACTION:
Signature of Sircctor, ^CW ED O DISTRIBUTION:
OCA TO ACK SPECIAL HANDLING: NONE CONSTITUENT:
ED MAYER NOTES:
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DATE DUE:
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EDO --G19990490}}

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