[Federal Register Volume 60, Number 48 (Monday, March 13, 1995)]
[Notices]
[Pages 13478-13481]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-6067]
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NUCLEAR REGULATORY COMMISSION
[Docket No. 50-498]
Houston Lighting and Power Co., City Public Service Board of San
Antonio, Central Power and Light Co., City of Austin, TX; Notice of
Consideration of Issuance of Amendment to Facility Operating License,
Proposed No Significant Hazards Consideration Determination, and
Opportunity for a Hearing
The U.S. Nuclear Regulatory Commission (the Commission) is
considering issuance of an amendment to Facility Operating License No.
NPF-6, issued to Houston Lighting & Power Company, et al., (the
licensee) for operation of the South Texas Project (STP), Unit 1,
located in Matagorda County, Texas.
The proposed amendment would modify the steam generator tube
plugging criteria in Technical Specification 3/4.4.5, Steam Generators,
and the allowable leakage for Unit 1 in Technical Specification 3/
4.4.6.2, Operational Leakage, and the associated Bases.
Before issuance of the proposed license amendment, the Commission
will have made findings required by the Atomic Energy Act of 1954, as
amended (the Act), and the Commission's regulations.
The Commission has made a proposed determination that the amendment
request involves no significant hazards consideration. Under the
Commission's regulations in 10 CFR 50.92, this means that operation of
the facility in accordance with the proposed amendment would not (1)
involve a significant increase in the probability or consequences of an
accident previously evaluated; or (2) create the possibility of a new
or different kind of accident from any accident previously evaluated;
or (3) involve a significant reduction in a margin of safety. As
required by 10 CFR 50.91(a), the licensee has provided its analysis of
the issue of no significant hazards consideration, which is presented
below:
1. Does the proposed change involve a significant increase in
the probability or consequences of an accident previously evaluated?
Structural Considerations
Industry testing of model boiler and operating plant tube
specimens for free span tubing at room temperature conditions shows
typical burst pressures in excess of 5000 psi for indications of
outer diameter stress corrosion cracking with voltage measurements
at or below the structural limit of 4.0 volts. One model boiler
specimen with a voltage amplitude of 19 volts also exhibited a burst
pressure greater than 5000 psi. Burst testing performed on one
intersection pulled [[Page 13479]] from STP Unit 1 with a 0.51 volt
indication yielded a measured burst pressure of 8900 psi at room
temperature. It is noted that the industry burst pressure tests do
not reflect the effects of temperature and material properties in
terms of the realized reduction in strength. However, even
correcting for the effects of temperature on material properties
(which represents about 80% of the strength at room temperature from
ASME [American Society of Mechanical Engineers] Code Section III
Appendix 1 values) yields effective burst pressures of about 4000
psi which is above the RG [Regulatory Guide] 1.121 limit of 3790 psi
(1.43 times the MSLB [main steam line break] pressure differential)
at 4.0 volts. The STP Unit 1 data point (0.51 volt) would yield an
effective burst pressure of about 7100 psi, which is well above the
95% lower tolerance limit (LTL) prediction per the burst correlation
data used. Additional benefit is realized during normal operation
since the proximity of the TSP [tube support plate] will reinforce
the tube, further reducing the likelihood of tube burst.
The projected end-of-cycle (EOC) voltage compares favorably with
the 4 volt structural limit considering the EPRI [Electric Power
Research Institute] voltage growth rate for indications at STP.
Using the methodology of the NRC Draft Generic Letter 94-XX, the
structural limit is reduced by allowances for uncertainty and growth
to develop a beginning-of-cycle (BOC) repair limit which should
preclude EOC indications from growing in excess of the structural
limit. The non-destructive examination (NDE) uncertainty to be
applied per EPRI is approximately 21 percent. The EPRI recommended
growth allowance of 35 percent/EFPY [effective full power years] is
also applied. This growth value is conservative for STP Unit 1 based
on previous inspection history. By adding NDE uncertainty allowances
and a crack growth allowance to the repair limit, the structural
limit can be validated. Therefore, the maximum allowable BOC repair
limit (RL) based on the structural limit of 4 volts can be
represented as:
RL + (0.20 x RL) + (0.53* x RL) = 4 volts, which yields RL of
2.3 volts.
*The 35% growth rate for 1 EFPY was scaled up to the cycle
length used at South Texas.
This repair limit (2.3 volts) reasonably could be applied for
APC [alternate plugging criteria] implementation to repair bobbin
indications greater than the 1.0 volt criterion specified by NRC
Generic Letter 94-XX and is independent of RPC [rotating pancake
coil] confirmation of the indications. Houston Lighting & Power has
chosen to use a steam generator tube upper repair limit of 2.3 volts
to assess tube integrity for those bobbin indications which are
above 1.0 volt but do not have confirming RPC calls. This 2.3 volt
upper limit for non-confirmed RPC calls is consistent with the NRC
Generic Letter 94-XX which establishes 2.7 volts as the upper limit
for 3/4 tubing. Since the upper bound for repair of non-confirmed
RPC is limited to a value far less than the structural limit
associated with full alternate criteria, the establishment of the
repair limits are determined to be reasonable and conservative with
respect to the industry pulled tube data base used.
Leakage Considerations
As part of the implementation of APC, the distribution of EOC
cracking indications at the TSP intersections has been used to
calculate the primary to secondary leakage which is bounded by the
maximum leakage required to remain within applicable dose limits (10
CFR 100, NUREG-0800 and GDC [General Design Criterion] 19). This
limit was calculated using the Technical Specification RCS [reactor
coolant system] Iodine-131 transient spiking values consistent with
NUREG-0800. Applications of the APC criteria requires the projection
of postulated MSLB leakage based on the projected EOC voltage
distribution for the beginning of the cycle. Projected EOC voltage
distribution is developed using the most recent EOC eddy current
results and a voltage measurement uncertainty. Draft NUREG-1477
requires that all indications to which APC is applied must be
included in the leakage projection.
The projected MSLB leakage rate calculation methodology
prescribed in EPRI TR-100407 will be used to calculate the EOC
leakage. A Monte Carlo approach will be used to determine the EOC
leakage, accounting for all of the ECT [eddy current testing]
uncertainties, voltage growth, and an assumed probability of
detection (POD) of 0.6 for a 1.0 volt repair limit. The fitted
logarithmic function probability of leakage correlation will be used
to establish the STP MSLB leak rate used for comparison with a
bounding allowable leak rate in the faulted loop which would result
in radiological consequences which are within applicable dose
limits. Due to the relatively low voltage levels of indications at
STP and low voltage growth rates, it is expected that the actual
calculated leakage values will be far less than this limit.
Currently, the leakage projected for EOC-05 at STP Unit 1 is 0.02
gpm [gallons per minute] (<21 gpd="" [gallons="" per="" day])="" which="" is="" negligible="" in="" comparison="" to="" the="" allowable="" limit.="" therefore,="" implementation="" of="" apc="" does="" not="" adversely="" affect="" steam="" generator="" tube="" integrity="" and="" implementation="" will="" be="" shown="" to="" result="" in="" acceptable="" does="" consequences.="" the="" proposed="" amendment="" does="" not="" result="" in="" any="" increase="" in="" the="" probability="" of="" consequences="" of="" an="" accident="" previously="" evaluated.="" 2.="" does="" the="" change="" create="" the="" possibility="" of="" a="" new="" or="" different="" kind="" of="" accident="" from="" any="" accident="" previously="" evaluated?="" implementation="" of="" the="" proposed="" steam="" generator="" tube="" alternate="" plugging="" criteria="" for="" odscc="" [outer="" diameter="" stress="" corrosion="" cracking]="" at="" the="" tsp="" intersections="" does="" not="" introduce="" any="" significant="" changes="" to="" the="" plant="" design="" basis.="" use="" of="" the="" criteria="" does="" not="" provide="" a="" mechanism="" which="" could="" result="" in="" an="" accident="" outside="" of="" the="" region="" of="" the="" tsp="" elevations="" since="" no="" odscc="" has="" been="" identified="" outside="" the="" thickness="" of="" the="" tsps.="" it="" is="" therefore="" expected="" that="" for="" all="" plant="" conditions,="" neither="" a="" single="" nor="" multiple="" tube="" rupture="" event="" would="" occur="" in="" a="" steam="" generator="" where="" apc="" has="" been="" applied.="" specifically,="" houston="" lighting="" &="" power="" will="" implement,="" for="" unit="" 1,="" a="" maximum="" leakage="" rate="" of="" 150="" gpd="" per="" steam="" generator="" (sg)="" to="" help="" preclude="" the="" potential="" for="" excessive="" leakage="" during="" all="" plant="" conditions.="" the="" current="" technical="" specification="" limits="" on="" primary-="" to-secondary="" leakage="" at="" operating="" conditions="" are="" 1="" gpm="" for="" all="" steam="" generators="" or="" 500="" gpd="" for="" any="" one="" sg.="" the="" rg="" 1.121="" criterion="" for="" establishing="" operational="" leakage="" rate="" limits="" governing="" plant="" shutdown="" be="" based="" [sic]="" upon="" leak-before-break="" (lbb)="" considerations="" to="" detect="" a="" free="" span="" crack="" before="" potential="" tube="" rupture="" as="" a="" result="" of="" faulted="" plant="" conditions.="" the="" 150="" gpd="" limit="" is="" intended="" to="" provide="" for="" leakage="" detection="" and="" plant="" shutdown="" in="" the="" event="" of="" an="" unexpected="" crack="" propagation="" resulting="" in="" excessive="" leakage.="" rg="" 1.121="" acceptance="" criteria="" for="" establishing="" operating="" leakage="" limits="" are="" based="" on="" lbb="" considerations="" such="" that="" plant="" shutdown="" is="" initiated="" if="" the="" permissible="" crack="" is="" exceeded.="" the="" predicted="" eoc="" leakage="" for="" stp="" is="" based="" on="" a="" 35%="" growth="" rate="" and="" does="" not="" take="" credit="" for="" the="" tsp="" proximity="" during="" normal="" operation.="" the="" total="" current="" projected="" leakage="" for="" eoc="" 05="" is="" 20.5="" gpd="" for="" the="" limiting="" sg="" (c)="" at="" stp="" unit="" 1="" which="" is="" considerably="" less="" than="" the="" 150="" gpd="" limit.="" thus,="" the="" 150="" gpd="" limit="" provides="" for="" plant="" shutdown="" prior="" to="" reaching="" critical="" crack="" lengths.="" additionally,="" this="" leak-before-break="" evaluation="" assumes="" that="" the="" entire="" crevice="" area="" is="" uncovered="" during="" the="" secondary="" side="" blowdown="" of="" a="" mslb.="" typically,="" it="" is="" expected="" for="" the="" vast="" majority="" of="" intersections="" that="" only="" partial="" uncovery="" will="" occur.="" thus,="" the="" proximity="" of="" the="" tsp="" will="" enhance="" the="" burst="" capacity="" of="" the="" tube.="" steam="" generator="" tube="" integrity="" is="" continually="" maintained="" through="" inservice="" inspection="" and="" primary-to-secondary="" leakage="" monitoring.="" any="" tubes="" falling="" outside="" the="" apc="" repair="" limits="" are="" removed="" from="" service.="" therefore,="" the="" possibility="" of="" a="" new="" or="" different="" kind="" of="" accident="" from="" any="" accident="" previously="" developed="" is="" not="" created.="" 3.="" does="" the="" change="" involve="" a="" significant="" reduction="" in="" a="" margin="" of="" safety?="" the="" use="" of="" the="" voltage="" based="" bobbin="" probe="" for="" dispositioning="" odscc="" degraded="" tubes="" within="" tsp="" intersections="" by="" apc="" is="" demonstrated="" to="" maintain="" steam="" generator="" tube="" integrity="" in="" accordance="" with="" the="" requirements="" of="" rg="" 1.121.="" rg="" 1.121="" describes="" a="" method="" acceptable="" to="" the="" nrc="" staff="" for="" meeting="" gdcs="" 14,="" 15,="" 31,="" and="" 32="" by="" reducing="" the="" probability="" or="" the="" consequences="" of="" steam="" generator="" tube="" rupture.="" this="" is="" accomplished="" by="" determining="" the="" limiting="" conditions="" of="" degradation="" of="" steam="" generator="" tubing,="" as="" established="" by="" inservice="" inspection,="" for="" which="" tubes="" with="" unacceptable="" cracking="" are="" removed="" from="" service.="" upon="" implementation="" of="" the="" criteria,="" even="" under="" the="" worst="" case="" conditions,="" the="" occurrence="" of="" odscc="" at="" the="" tsp="" elevation="" is="" not="" expected="" to="" leak="" to="" a="" steam="" generator="" tube="" rupture="" event="" during="" normal="" or="" faulted="" plant="" conditions.="" the="" eoc="" distribution="" of="" crack="" indications="" at="" the="" tsp="" elevations="" will="" be="" confirmed="" to="" result="" in="" acceptable="" primary-to-secondary="" leakage="" during="" all="" plant="" conditions="" and="" that="" radiological="" consequences="" are="" not="" adversely="" impacted.="" in="" addressing="" the="" combined="" effects="" of="" loss="" of="" coolant="" accident="" (loca)="" and="" safe="" [[page="" 13480]]="" shutdown="" earthquake="" (sse)="" on="" the="" steam="" generator="" component="" (as="" required="" by="" gdc="" 2),="" it="" has="" been="" determined="" that="" tube="" collapse="" may="" occur="" in="" the="" steam="" generators="" at="" some="" plants.="" this="" is="" the="" case="" at="" stp="" as="" the="" tsp="" may="" become="" deformed="" as="" a="" result="" of="" lateral="" loads="" at="" the="" wedge="" supports="" at="" the="" periphery="" of="" the="" plate="" due="" to="" the="" combined="" effects="" of="" the="" loca="" [loss="" of="" coolant="" accident]="" rarefaction="" wave="" and="" sse="" loadings.="" the="" resulting="" secondary-to-primary="" pressure="" differential="" on="" the="" deformed="" tubes="" may="" cause="" some="" of="" the="" tube="" to="" collapse.="" there="" are="" two="" concerns="" associated="" with="" steam="" generator="" tube="" collapse.="" first,="" the="" collapse="" of="" steam="" generator="" tubing="" reduces="" the="" rcs="" flow="" area="" through="" the="" tubes.="" the="" reduction="" on="" flow="" area="" increases="" the="" resistance="" to="" flow="" of="" steam="" from="" the="" core="" during="" a="" loca="" which,="" in="" turn,="" may="" potentially="" increase="" peak="" clad="" temperature="" (pct).="" second,="" there="" is="" a="" potential="" that="" through="" wall="" cracks="" in="" tubes="" could="" sufficiently="" enlarge="" during="" tube="" deformation="" or="" collapse,="" causing="" sufficient="" in-leakage="" of="" secondary="" water="" back="" to="" the="" core="" which="" dilutes="" the="" poisoning="" effect="" of="" boron="" injection="" from="" the="" emergency="" cooling="" system.="" again,="" an="" increase="" in="" core="" pct="" may="" result.="" consequently,="" since="" the="" lbb="" methodology="" is="" applicable="" to="" the="" stp="" reactor="" coolant="" loop="" piping,="" the="" probability="" of="" breaks="" in="" the="" primary="" loop="" piping="" is="" sufficiently="" low="" that="" they="" need="" not="" be="" considered="" in="" the="" structural="" design="" of="" the="" plant.="" the="" limiting="" loca="" event="" becomes="" either="" the="" accumulator,="" rhr="" [residual="" heat="" removal],="" or="" the="" pressurizer="" surge="" line="" break.="" the="" analysis="" identifies="" tube="" located="" adjacent="" to="" wedge="" regions="" that="" are="" subject="" to="" potential="" collapse="" during="" combined="" loca="" and="" sse.="" these="" tubes="" will="" be="" excluded="" from="" application="" of="" apc.="" thus,="" existing="" tube="" integrity="" requirements="" apply="" to="" these="" tubes="" and="" the="" margin="" of="" safety="" is="" not="" reduced.="" implementation="" practices="" using="" the="" bobbin="" probe="" voltage="" based="" tube="" plugging="" criteria="" bounds="" rg="" 1.83="" considerations="" by:="" (1)="" using="" enhanced="" eddy="" current="" inspection="" guidelines="" consistent="" with="" those="" used="" by="" epri="" in="" developing="" the="" correlations.="" this="" provides="" consistency="" in="" voltage="" normalization,="" (2)="" performing="" a="" 100="" percent="" bobbin="" coil="" inspection="" for="" all="" hot="" leg="" tube="" support="" plate="" intersections="" and="" all="" cold="" leg="" intersections="" down="" to="" the="" lowest="" cold="" leg="" tube="" support="" plate="" with="" outer="" diameter="" stress="" corrosion="" cracking="" (odscc)="" indications.="" the="" determination="" of="" the="" tube="" support="" plate="" intersections="" having="" odscc="" indications="" shall="" be="" based="" on="" the="" performance="" of="" at="" least="" a="" 20%="" random="" sampling="" of="" tubes="" inspected="" over="" their="" full="" length,="" and="" (3)="" incorporating="" rpc="" inspection="" for="" all="" tubes="" with="" larger="" indications="" left="" inservice.="" this="" further="" establishes="" the="" principal="" degradation="" morphology="" as="" odscc.="" implementation="" of="" apc="" at="" tsp="" intersections="" will="" decrease="" the="" number="" of="" tubes="" which="" must="" be="" repaired.="" since="" the="" installation="" of="" tube="" plugs="" (to="" remove="" odscc="" degraded="" tubes="" from="" service)="" reduces="" the="" rcs="" flow="" margin,="" apc="" implementation="" will="" help="" preserve="" the="" margin="" of="" flow="" that="" would="" otherwise="" be="" reduced.="" the="" projected="" eoc="" primary-to-secondary="" leakage="" rate="" allowed="" is="" bounded="" by="" a="" leak="" rate="" which="" limits="" the="" radiological="" consequences="" of="" a="" eoc="" mslb="" to="" within="" applicable="" dose="" limits.="" therefore,="" this="" change="" does="" not="" involve="" a="" significant="" reduction="" in="" the="" margin="" to="" safety.="" it="" is="" therefore="" concluded="" that="" the="" proposed="" license="" amendment="" request="" does="" not="" result="" in="" a="" significant="" reduction="" in="" the="" margin="" of="" safety="" as="" defined="" in="" the="" plant="" final="" safety="" analysis="" report="" or="" technical="" specifications.="" the="" nrc="" staff="" has="" reviewed="" the="" licensee's="" analysis="" and,="" based="" on="" this="" review,="" it="" appears="" that="" the="" three="" standards="" of="" 10="" cfr="" 50.92(c)="" are="" satisfied.="" therefore,="" the="" nrc="" staff="" proposes="" to="" determine="" that="" the="" amendment="" request="" involves="" no="" significant="" hazards="" consideration.="" the="" commission="" is="" seeking="" public="" comments="" on="" this="" proposed="" determination.="" any="" comments="" received="" within="" 30="" days="" after="" the="" date="" of="" publication="" of="" this="" notice="" will="" be="" considered="" in="" making="" any="" final="" determination.="" normally,="" the="" commission="" will="" not="" issue="" the="" amendment="" until="" the="" expiration="" of="" the="" 30-day="" notice="" period.="" however,="" should="" circumstances="" change="" during="" the="" notice="" period="" such="" that="" failure="" to="" act="" in="" a="" timely="" way="" would="" result,="" for="" example,="" in="" derating="" or="" shutdown="" of="" the="" facility,="" the="" commission="" may="" issue="" the="" license="" amendment="" before="" the="" expiration="" of="" the="" 30-day="" notice="" period,="" provided="" that="" its="" final="" determination="" is="" that="" the="" amendment="" involves="" no="" significant="" hazards="" consideration.="" the="" final="" determination="" will="" consider="" all="" public="" and="" state="" comments="" received.="" should="" the="" commission="" take="" this="" action,="" it="" will="" publish="" in="" the="" federal="" register="" a="" notice="" of="" issuance="" and="" provide="" for="" opportunity="" for="" a="" hearing="" after="" issuance.="" the="" commission="" expects="" that="" the="" need="" to="" take="" this="" action="" will="" occur="" very="" infrequently.="" written="" comments="" may="" be="" submitted="" by="" mail="" to="" the="" rules="" review="" and="" directives="" branch,="" division="" of="" freedom="" of="" information="" and="" publications="" services,="" office="" of="" administration,="" u.s.="" nuclear="" regulatory="" commission,="" washington,="" dc="" 20555,="" and="" should="" cite="" the="" publication="" date="" and="" page="" number="" of="" this="" federal="" register="" notice.="" written="" comments="" may="" also="" be="" delivered="" to="" room="" 6d22,="" two="" white="" flint="" north,="" 11545="" rockville="" pike,="" rockville,="" maryland,="" from="" 7:30="" a.m.="" to="" 4:15="" p.m.="" federal="" workdays.="" copies="" of="" written="" comments="" received="" may="" be="" examined="" at="" the="" nrc="" public="" document="" room,="" the="" gelman="" building,="" 2120="" l="" street,="" washington,="" dc.="" the="" filing="" of="" requests="" for="" hearing="" for="" petitions="" for="" leave="" to="" intervene="" is="" discussed="" below.="" by="" april="" 12,="" 1995,="" the="" licensee="" may="" file="" a="" request="" for="" a="" hearing="" with="" respect="" to="" issuance="" of="" the="" amendment="" to="" the="" subject="" facility="" operating="" license="" and="" any="" person="" whose="" interest="" may="" be="" affected="" by="" this="" proceeding="" and="" who="" wishes="" to="" participate="" as="" a="" party="" in="" the="" proceeding="" must="" file="" a="" written="" request="" for="" a="" hearing="" and="" a="" petition="" for="" leave="" to="" intervene.="" requests="" for="" a="" hearing="" and="" a="" petition="" for="" leave="" to="" intervene="" shall="" be="" filed="" in="" accordance="" with="" the="" commission's="" ``rules="" of="" practice="" for="" domestic="" licensing="" proceedings''="" in="" 10="" cfr="" part="" 2.="" interested="" persons="" should="" consult="" a="" current="" copy="" of="" 10="" cfr="" 2.714="" which="" is="" available="" at="" the="" commission's="" public="" document="" room,="" the="" gelman="" building,="" 2120="" l="" street,="" nw.,="" washington,="" dc,="" and="" at="" the="" local="" public="" document="" room="" located="" at="" the="" wharton="" county="" junior="" college,="" j.m.="" hodges="" learning="" center,="" 911="" boling="" highway,="" wharton,="" texas="" 77488.="" if="" a="" request="" for="" a="" hearing="" or="" petition="" for="" leave="" to="" intervene="" is="" filed="" by="" the="" above="" date,="" the="" commission="" or="" an="" atomic="" safety="" and="" licensing="" board,="" designated="" by="" the="" commission="" or="" by="" the="" chairman="" of="" the="" atomic="" safety="" and="" licensing="" board="" panel,="" will="" rule="" on="" the="" request="" and/or="" petition;="" and="" the="" secretary="" or="" the="" designated="" atomic="" safety="" and="" licensing="" board="" will="" issue="" a="" notice="" of="" hearing="" or="" an="" appropriate="" order.="" as="" required="" by="" 10="" cfr="" 2.714,="" a="" petition="" for="" leave="" to="" intervene="" shall="" be="" set="" forth="" with="" particularly="" the="" interest="" of="" the="" petitioner="" in="" the="" proceeding,="" and="" how="" that="" interest="" may="" be="" affected="" by="" the="" results="" of="" the="" proceeding.="" the="" petition="" should="" specifically="" explain="" the="" reasons="" why="" intervention="" should="" be="" permitted="" with="" particular="" reference="" to="" the="" following="" factors:="" (1)="" the="" nature="" of="" the="" petitioner's="" right="" under="" the="" act="" to="" be="" made="" party="" to="" the="" proceeding;="" (2)="" the="" nature="" and="" extent="" of="" the="" petitioner's="" property,="" financial,="" or="" other="" interest="" in="" the="" proceeding;="" and="" (3)="" the="" possible="" effect="" of="" any="" order="" which="" may="" be="" entered="" in="" the="" proceeding="" on="" the="" petitioner's="" interest.="" the="" petition="" should="" also="" identify="" the="" specific="" aspect(s)="" of="" the="" subject="" matter="" of="" the="" proceeding="" as="" to="" which="" petitioner="" wishes="" to="" intervene.="" any="" person="" who="" has="" filed="" a="" petition="" for="" leave="" to="" intervene="" or="" who="" has="" been="" admitted="" as="" a="" party="" may="" amend="" the="" petition="" without="" requesting="" leave="" of="" the="" board="" up="" to="" 15="" days="" prior="" to="" the="" first="" prehearing="" conference="" scheduled="" in="" the="" proceeding,="" but="" such="" an="" amended="" petition="" must="" satisfy="" the="" specificity="" requirements="" described="" above.="" not="" later="" than="" 15="" days="" prior="" to="" the="" first="" prehearing="" conference="" scheduled="" in="" the="" proceeding,="" a="" petitioner="" shall="" file="" a="" supplement="" to="" the="" petition="" to="" intervene="" [[page="" 13481]]="" which="" must="" include="" a="" list="" of="" the="" contentions="" which="" are="" sought="" to="" be="" litigated="" in="" the="" matter.="" each="" contention="" must="" consist="" of="" a="" specific="" statement="" of="" the="" issue="" of="" law="" or="" fact="" to="" be="" raised="" or="" controverted.="" in="" addition,="" the="" petitioner="" shall="" provide="" a="" brief="" explanation="" of="" the="" bases="" of="" the="" contention="" and="" a="" concise="" statement="" of="" the="" alleged="" facts="" or="" expert="" opinion="" which="" support="" the="" contention="" and="" on="" which="" the="" petitioner="" intends="" to="" rely="" in="" proving="" the="" contention="" at="" the="" hearing.="" the="" petitioner="" must="" also="" provide="" references="" to="" those="" specific="" sources="" and="" documents="" of="" which="" the="" petitioner="" is="" award="" and="" on="" which="" the="" petitioner="" intends="" to="" rely="" to="" establish="" those="" facts="" or="" expert="" opinion.="" petitioner="" must="" provide="" sufficient="" information="" to="" show="" that="" a="" genuine="" dispute="" exists="" with="" the="" applicant="" on="" a="" material="" issue="" of="" law="" or="" fact.="" contentions="" shall="" be="" limited="" to="" matters="" within="" the="" scope="" of="" the="" amendment="" under="" consideration.="" the="" contention="" must="" be="" one="" which,="" if="" proven,="" would="" entitle="" the="" petitioner="" to="" relief.="" a="" petitioner="" who="" fails="" to="" file="" such="" a="" supplement="" which="" satisfies="" these="" requirements="" with="" respect="" to="" at="" least="" one="" contention="" will="" not="" be="" permitted="" to="" participate="" as="" a="" party.="" those="" permitted="" to="" intervene="" become="" parties="" to="" the="" proceeding,="" subject="" to="" any="" limitations="" in="" the="" order="" granting="" leave="" to="" intervene,="" and="" have="" the="" opportunity="" to="" participate="" fully="" in="" the="" conduct="" of="" the="" hearing,="" including="" the="" opportunity="" to="" present="" evidence="" and="" cross-="" examine="" witnesses.="" if="" a="" hearing="" is="" requested,="" the="" commission="" will="" make="" a="" final="" determination="" on="" the="" issue="" of="" no="" significant="" hazards="" consideration.="" the="" final="" determination="" will="" serve="" to="" decide="" when="" the="" hearing="" is="" held.="" if="" the="" final="" determination="" is="" that="" the="" amendment="" request="" involves="" no="" significant="" hazards="" consideration,="" the="" commission="" may="" issue="" the="" amendment="" and="" make="" it="" immediately="" effective,="" notwithstanding="" the="" request="" for="" a="" hearing.="" any="" hearing="" held="" would="" take="" place="" after="" issuance="" of="" the="" amendment.="" if="" the="" final="" determination="" is="" that="" the="" amendment="" request="" involves="" a="" significant="" hazards="" consideration,="" any="" hearing="" held="" would="" take="" place="" before="" the="" issuance="" of="" any="" amendment.="" a="" request="" for="" a="" hearing="" or="" a="" petition="" for="" leave="" to="" intervene="" must="" be="" filed="" with="" the="" secretary="" of="" the="" commission,="" u.s.="" nuclear="" regulatory="" commission,="" washington,="" dc="" 20555,="" attention:="" docketing="" and="" services="" branch,="" or="" may="" be="" delivered="" to="" the="" commission's="" public="" document="" room,="" the="" gelman="" building,="" 2120="" l="" street,="" nw.,="" washington,="" dc,="" by="" the="" above="" date.="" where="" petitions="" are="" filed="" during="" the="" last="" 10="" days="" of="" the="" notice="" period,="" it="" is="" requested="" that="" the="" petitioner="" promptly="" so="" inform="" the="" commission="" by="" a="" toll-free="" telephone="" call="" to="" western="" union="" at="" 1-(800)="" 248-5100="" (in="" missouri="" 1-(800)="" 342-6700).="" the="" western="" union="" operator="" should="" be="" given="" datagram="" identification="" number="" n1023="" and="" the="" following="" message="" addressed="" to="" william="" d.="" beckner,="" director,="" project="" directorate="" iv-1:="" petitioner's="" name="" and="" telephone="" number,="" date="" petition="" was="" mailed,="" plant="" name,="" and="" publication="" date="" and="" page="" number="" of="" this="" federal="" register="" notice.="" a="" copy="" of="" the="" petition="" should="" also="" be="" sent="" to="" the="" office="" of="" the="" general="" counsel,="" u.s.="" nuclear="" regulatory="" commission,="" washington,="" dc="" 20555,="" and="" to="" jack="" r.="" newman,="" esq.,="" newman="" &="" holtzinger,="" p.c.,="" 1615="" l="" street,="" nw.,="" washington,="" dc="" 20036,="" attorney="" for="" the="" licensee.="" nontimely="" filings="" of="" petitions="" for="" leave="" to="" intervene,="" amended="" petitions,="" supplemental="" petitions="" and/or="" requests="" for="" hearing="" will="" not="" be="" entertained="" absent="" a="" determination="" by="" the="" commission,="" the="" presiding="" officer="" or="" the="" presiding="" atomic="" safety="" and="" licensing="" board="" that="" the="" petition="" and/or="" request="" should="" be="" granted="" based="" upon="" a="" balancing="" of="" the="" factors="" specified="" in="" 10="" cfr="" 2.714(a)(1)(i)-(v)="" and="" 2.714(d).="" for="" further="" details="" with="" respect="" to="" this="" action,="" see="" the="" application="" for="" amendment="" dated="" march="" 1,="" 1995,="" which="" is="" available="" for="" public="" inspection="" at="" the="" commission's="" public="" document="" room,="" the="" gelman="" building,="" 2120="" l="" street,="" nw.,="" washington,="" dc,="" and="" at="" the="" local="" public="" document="" room="" located="" at="" the="" wharton="" county="" junior="" college,="" j.m.="" hodges="" learning="" center,="" 911="" boling="" highway,="" wharton,="" texas="" 77488.="" dated="" at="" rockville,="" maryland,="" this="" 7th="" day="" of="" march="" 1995.="" for="" the="" nuclear="" regulatory="" commission.="" thomas="" w.="" alexion,="" project="" manager,="" project="" directorate="" iv-1,="" division="" of="" reactor="" projects="" iii/iv,="" office="" of="" nuclear="" reactor="" regulation.="" [fr="" doc.="" 95-6067="" filed="" 3-10-95;="" 8:45="" am]="" billing="" code="" 7590-01-m="">