ML20128M242
| ML20128M242 | |
| Person / Time | |
|---|---|
| Issue date: | 05/23/1985 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-2311, NUDOCS 8507110625 | |
| Download: ML20128M242 (17) | |
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'b DATE ISSUED: May 23,1985
SUMMARY
/ MINUTES OF THE SUBCOMMITIEE MEETING ON REACTOR OPERATIONS MAY 6, 1985 WASHINGTON, D.C.
A meeting was held by the ACRS Subcommittee on Reactor Operations. The purpose of the meeting was to discuss recent operating occurrences at various nuclear reactors. Notice of the meeting was published in the Federal Register on April 23, 1985 (Attachment A). The schedule of items covered in the meeting is in Attachment B.
The list of attendees is in Attachment C.
A list of handouts is in Attachment D.
The hand-outs are filed with the office copy.
H. Alderman was the ACRS Staff Member for this meeting.
Acting Chairman, Mr. C. Michelson convened the meeting at 1:15 p.m.
Principal Attendees:
ACRS Members NRC Staff C. Michelson, Acting Chairman C. E. Rossi R. Hernan C. Wylie M. Wegner J. Dyer G. Reed J. Monroe P. Wagner D. Ward (Part time)
P. Burnett C. Hehl J. Collins T. Colburn ACRS Staff C. Berlinger V. Hodge H. Alderman J. T. Beard P. Cartland R. K. Major (Part time)
Major Significant Events Included:
M. G. Wegner, EGCB, presented recent HPCI/RCIC problems. Ms. Wegner presented a statistical breakdown of recent HPCI/RCIC events as culled as orts. The facilities having the greatest number of g1,Agcg*i m>1=e eeee a
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Summary / Minutes / Reactor Operations 2 Mtg., May 6, 2985 HPCI problems were Duane Arnold, Hatch 1, Limerick and Peach Bottom 3.
The facilities having the greatest number of RCIC problems were Grand Gulf 1. Hatch 1, Hatch 2, and Lasalle 1.
The problems seemed to be maintenance and test related.
Ms. Wegner, EGCB, also discussed chemical cleaning of the secondary side of the steam generator at Millstone 2.
Millstone 2 has had problems with tube degradation based upon sludge accumulation. Approximately 13 inches of sludge has been built up. Hydrolancing didn't have any effect on sludge cleanup, so chemical cleaning was used.
Since the chemical cleaning the number of tubes requiring plugging and sleeves has increased. The staff is trying to determine whether the corrosion problem has increased with the chemical cleaning.
Mr. J. Deyer, I&E presented a discussion of Station Battery problems.
There have been an increasing number of inspections where the station batteries have been found not up to standards. Many cases involved failure to demonstrate operability. Specific gravity has been measured without temperature compensation.
Battery capacity tests were performed with invalid procedures.
Batteries were found in degraded condition.
The resultant actions were: Continued inspections by the regions, an Inspection and Enforcement Notice has been sent to the licensees. I&E has sent a memo to NRR expressing their concerns on the issues.
W. J. Collins, I&E, presented a discussion regarding weld leaks in the ultimate heat sink piping at Palo Verde.
During the plant preoperational testing on March 1, 1985, a leaking weld in the essential spray pond was identified. This piping is type 316L stainless steel, schedule 10, with type 308L weld filler metal. The leaking weld is located in an eight inch diameter pipe section.
Two sections of 14 diameter pipe welds were removed for evaluation. The licensee has concluded that the weld degradation is a result of mi-cro-biological influenced corrosion.
Summary / Minutes / Reactor Operations 3 Mtg., May 6, ?985 Mr. T. Colburn discussed the heater drain pump discharge pipe rupture at Trojan.
This incident occurred on March 9, 1985. The pipe is 14 inches and normally at 350 F. and 450 psi. The pipe was imediately downstream of a globe valve.
The pipe is A106B carbon steel.
The licensee has established the cause of the rupture as erosion of the pipe. There were high velocities in this region of the order of 20-40 feet per second.
I&E will issue an information notice regarding this and similar piping problems.
C. H. Berlinger discussed the Grand Gulf 1 malfunction of the TDI Emergency Diesel Generators.
On March 11, 1985 during EDG surveillance testing, the diesel failed to start. The failure of the air start valve was traced to the failure of Cloy William Hager air start header check valve. The air start header check valve is used on TDI engines which employs a headed air start dis-tribution system to prevent total loss of starting air of the air supply line ruptures.
The cause of failure is attributed to high cycle fatigue due to valve disk vibration during engine start testing.
The corrective action has been to replace all valves with mission DUO -
check valves as per TDI recommendation, and to inform TDI owners group at the March Executive Committee meeting.
Mr. V. Hodge, I&E, discussed the failure of the air check valves to seat, at Byron on March 14, 1985.
These a k check valves are part of the air operated hydraulic MSIV system. A leaking air check valve prevented MSIV closure on March 14, 1985. Nearly all the air check valves failed on slow depressurization but worked fine on fast depressurization. The licensee replaced the i
Summary / Minutes / Reactor Operations 4 Mtg., May 6, 2985 failed valves, tested the system o.k. but got more failures on April 12, 1985.
The licensee replaced all the air check valves with valves of improved design. The new valves have a guided plug on stem, softer material on seat, greater seating force, better machining, and a spherical puppet surface.
The licensee is doing bi-weekly surveillance.
I&E issued an Information Notice 85-35 on April 30, 1985.
Mr. J. T. Beard, ORAB, discussed changes in Emergency Diesel Generator Testing at North Anna.
The EDG's at North Anna have had a long history of failure to meet the testing requirements. The testing requirements have been changed and the EDG's performance has improved considerably.
Changes in the conduct of testing include:
Warmup prior to test Delete fast start from monthly test Delete fast load from monthly test Combine 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> load run with test start Changes in how often tests are conducted include:
Change reliability basis from 0.99 per unit to 0.95 per EDG.
Delete 14 days and 3 days test frequencies.
Invererse testing (monthly to weekly) if:
o Greater or equal to 5 failures in 100 tests o
Greater or equal to 2 failures in 20 tests
Sumary/ Minutes / Reactor Operations 5 Mtg., May 6, 2985 P. Burnett discussed the Summer premature criticality.
During a startup a trainee was operating the reactor controls at Sumer.
Evidently he wasn't watching the instrument displays and the reactor reached criticality sooner than expected. A senior operator was with the trainee but he didn't detect the premature criticality.
Further details regarding this incident will be provided at the full Comittee on May 10, 1985.
At the conclusion of the formal presentations the following events were briefly mentioned on an informal basis:
Grand Gulf 1 MSIV's fail to close (update)
Kewaunee Spontaneous start of reactor coolant pump Browns Ferry 2 non-Radiological Fatality (crane hook)
Millstone 3 flooding of ESF room Byron 2 - Solvent Fire in HVAC Humidifier Wolf Creek - pressure relief valve failure.
Following the presentation, the subcommittee decided the following events should be presented to the full Committee.
- 2 Millstone Unit 2 S/6 tube defects
- 5 Sumer premature criticality
- 6 Palo Verde 2 weld leaks in VHS piping.
- 10 North Anna 2 revisions to EDG testing requirements.
The meeting was adjourned at 5:15 p.m.
NOTE:
A complete transcript of the meeting is on file at the NRC
'..Public Document Room at 1717 H St., NW., Washington, D. C. or can be obtained at cost from ACE Federal Reporter, Inc., 444 N. Capitol St., Washington D. C. 20001, Telephone (202) 347-3700.
Hi-1Mes Fedecal R$.er / Vol. 50[No.-F8 / Tuesd2y, Apef! 23 1985 / Notic es
'E. Quaotitativs Sofety Cools--
Dinam NRC Staff evaluttion-ci two.
%e agenda for the subpct meeting
=
shall be as follows:
portione (A4 deal with confidential Safeguards Information will be closed to.
e of the pro d NRC I
quantitatha safety goals.
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j
'F. Artum ACRS Activities-Discuss- %e Subcommittee w anticipated. ACRS activities including operating occurrems. ill discuss recentshall be as follows:da for the subject m prep' ration of the ACRS report to the e
Oral statements may be presented byTuesday. May 7.1885-d:30o.m. unitt NRC the proposed safety the conclosion ofbusiness members of the public with the reses proyam and budget for FY-1987 and proposed reveiw of scram concurrence of the Subcommittee ne Subcommittee willreview the systems for Westinghouse PWR nuclear Chairman; written statements will be potential consequences of sabotage at accepted and made available to the nonpowerreactors, be briefed by NMSS planta.
- C. EPA StandardsforHigh. Level Committee. Recordings will be permitted on sabotage protection at power Radioactive WasteRepositories-only during those portions of the reactors, and hear how the NRC Staff Discuna EPA environmental standards meeting when a transcript is being kept, reviews arid evaluates licenees' security for management and disposal of high. and questions may be asked only by phns.
level radioactive wastes in geologic members of the Subcommittee,its Oral statements may be presented by, consultants, and Staff. Persona desiring repositories.
members of the public with the
- H. Prioritization of Unresolved -
to make oral statements should notdy concurrence of the Subcommittee GenericIssuee-Discuss proposed the ACRS staff member named below as Chairman; written stateme priorities for a new list of approximately far in advance as is practicabhr so that accepted and made available to the 23 unresolved generic safety related appropriate arrangements can be made.
Committee. Recordings will be permitted issues.
During the initial portion of the
'I. ACRSSubcommittee Activities-meeting. the Subcommittee, along with only during those portions of the Discase safety related activities of any of its consultants who may be meeting when a transcript is being kept.
i designated ACRS subcommittees present, may exchange preliminary and questions may be asked only by including hydrodynamic effects in BWR views regarding matiets to be ' ~
members of the Subcommittee. Its dyumie contamments and the effects of considered during the balance of the consultants, and Staff. Persons desiring insulation debris on containment sumpmeeting.
to make oral statements should notify The Subcommittee ~will then hear the ACRS staff member named below as performance following a LOCA
'I. Meeting w presentations by And hold discussions far in advance as is practicable so that Commuseonersith NRC with representatives of the NRC Staff.
appropriate arrangements can be made.
Discans4
. report regardlag the roles of the A its consultants, and other interested Dunna the initialportion of the m
review and evaluation of the proposed persons regarding this review.
meeting, the Subcommittee along with DOE proyam for management and Further information regarding topics any ofits consultants who may be WT of radioactive wastes.
to be discussed. whether the meeting present, may exchange pre 1iminary
'K. Activilias ofACRSMembets--
has been cancelled or rescheduled, the
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Heat and damaa reports of ACRS Chairman's ruling on requests for the c naidered dunna the balance of the members reghrdlag activities as opportunity to present oral statements
"II"8' individual ACRS members.
and the time allotted therefor can be The Subcommittee vuill then hear
'L ACAS, Procedures andFractices-obtained by a prepaid telephone call to Proposed cdianges to ACRS Bylaws will the cognizant ACRS ataff member. Mr.
presentations by and hold dacussions be considered with respect to the Herman Alderman (telephone 202/634 with representatives of the NRC Staff.
conduct of ACRS members as part of the 1414) between 8.15 a.nt. and 5 00 p.m.,
Its consultants, and other interested 3
cdlegial body and as individuals.
EST. Persons planmng to attend this persons regarding this review.
4 June 6 4.1ses-Agneda to be 1necting are urged to contact the above Further information regarding topics
( m unced.
named individual one or two days to be discussed, whether the meeting July 11 13.1985-Agends to be before the scheduled meeting to be has been cancelled or rescheduled. the ammounced.
advised of any changes in schedule, etc.. Chairman's ruling on requesta for the Detad April 18,1985.
which may have occurred opportunity to present oral statements
)ebs C. Hoyis.
Deted; April 18,193$.
and the time allotted therefor can be Advisory (bdmisse Masqpement Officer.
m,$ae w. nm obtained by a prepaid telephone call to the cognizant ACRS staff member. Mr.
(Fit Doc. e54?oD Ptled 443-46. 4.45 am]
Auf,tathgfy,offecgxforpioject John Schiffgens (telephone 202/634-Review.
entans caos me es*
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1414) between 8:15 a.m and 5 00 p.m suussa cose rune.ms EST. Persons planning to attend this meeting are urged to contact the above AeMasey Cas named individus! one or two days o
Setagunnen,"ualeese on Meector
".Cy Committee on Reactor before this scheduled meeting to be 1 3ee on Reactee Sefoguards, aC iL8 On advised of any changes in schedule.etc.,
which may have occured.
- %e ACRS Sebcoenmittee on Reactor Operations wE hoW a insettng on May%e ACRS Submmmittee on Deted. April 18.1985.
,CMSEE, Roces 100B IP17 H Serest. NW, Safeguaeds and Security will bold a m rton w. u berkia.
WashtWom. DC. -
~W meeting en May 7.1965, Room 1046.1717 Auistant. Executive Directorfor Project
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e TENTATIVE SCHEDULE FOR ACRS REACTOR OPERATIONS SUBCOMMITTEE MEETING, MAY 6, 1985, 1:00 p.m.
ROOM 1046, 1717 H STREET NW, WASHINGTON, D.C.
TIME TITLE EVENT DATE PRESENTER 1:00 p.m. Opening Statement
- ACRS Subcommittee Chairman 1:15 p.m. Recent HPCI/RCIC Problems Oct. 1, 1984 M. Wegner, IE Feb. 12, 1985 1:30 p.m. Millstone Unit 2 S/G April 10, 1985 M. Wegner, IE Tube Defects 1:45 p.m. Station Battery Problems Nov. 1984 -
J. Dyer, IE Present 2:00 p.m. Browns Ferry 3 Level Feb. 13, 1985 J. Monroe &
P. Wagner, Indicator Event Reg.2 2:15 p.m. Summer Premature Criticality Feb. 28, 1985 P. Burnett &
C. Hehl, Reg.2 2:30 p.n.. Palo Verde 2 Weld Leaks in March 1, 1985 J. Collins, IE UHS Piping BREAK 2:45 p.m.
3:00 p.m. Trojan Heater Drain Pump March 9, 1985 C. Trarrell, NRR Discharge Pipe Rupture 3:15 p.m. Grand Gulf 1 Malfunction March 11, 1985 C. Berlinger, NRR of Diesel Generator 3:30 p.m. Byron 1 MSIV Failure During March 14, 1985 V. Hodge, IE Recovery From Loss of Offsite Power Test March 15, 1985 J. T. Beard, 3:45 p.m. North Anna 2 Revision to NRR EDG Testing Requirements March 16, 1985 P. Cortland, 4:00 p.m. Haddam Neck Feedwater Line IE 9
i Tent. Schedule Reactor 2
Operations Mtg.,May 6,1985
)
4: 15-5:00 OTHER EVENTS OF INTEREST p.m.
(No Formal Presentation l Grand Gulf 1 MSIVs Fail to Feb. 10, 1985 C. E. Rossi Close (Update)
Kewaunee Spontaneous Start of Feb. 12, 1985 C. E. Rossi
,)
Reactor Coolant Pump Browns Ferry 2 Non-Radiological March 29, 1985 C. E. Rossi Fatality (Crane Hook)
Millstone 3 Flooding of ESF Room.
March 20, 1985 C. E. Rossi Byron 2 - Solvent Fire in HVAC April 11, 1985 C. E. Rossi Humidifier a
5:00 -
Discussion and Adjourn 5:15 p.m.
RECENT SIGNIFICANT EVENTS TO BE PRESENTED NEXT TIhE Catawba 2 Failure of Volume April 22, 1985 Undetermineo Control Tank Oconee 1 Loss of Control Room April 25, 1985 Undetermined Annunciators
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REACTOR OPERATIONS ACR5 SUBCOMMITTEE MEETING ON p
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ATTACHMENT D HAND 0UTS FOR REACTOR OPERATIONS SUBCOP9tITTEE MEETING MAY 6, 1985 WASHINGTON, D.C.
1.
Agenda and Staff Presentation 2.
Browns Ferry level indicator event 3.
Palo Verde 2 Weld leaks - microbiological induced corrosion i
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15ess Federal Registee / Vol. 50,'No. 7s / Tuesday, April 23, 1985 / Notices
'F. Quantitative Safety Cools-Discuss NRC Staff evaluation of two.
The agenda for the subject meeting i
1
~~
sbau be as follows:
portions that deal with confidential j
year trial period and plan f '
Safeguards Information will be closed is -
implementation of the proposed NRC Monday. Me JWWa util the public.
quantitativa safety goals.
the conclusion ofbusiness The agenda for the subject meeting
'F.#btum ACRS Activities-Discuss-The Subcommittee wi shall be as follows:
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anticipated. ACRS activities including operating occurrerm. ll discuss recent preparation of the ACRS report to the Oral statements may be presented by Desday, May Z, JWha tutut.j
[
NRC regarding the proposed safety the conclosion ofbusiness
,g research program and budget for FY-members of the public with the g
concurrence of the Subcommittee The Subcommittee willreview the 1987 and proposed reveiw of scram Chairman; written statements will be potential consequences of sabotage at systems for WestmshousePWR nuclear accepted and made available to the nonpower reactors, be briefed by NMSS r
plants.
- C. EPA Standards for High. Level Committee, f.ecordings will be permitted on sabotage protection at power
' It Bodioactive Waste Repositories-only during those portions of the reactors, and hear how the NRC Staff Discuss EPA environmental standardsmeetmg when a transcript is being kept' reviews arid evaluates licenees' security i and questions may be asked only by plans.
for management and disposal of high.
members of the Subcommittee,its Oral statements may be presented by, levet radioactive wastes in geologic consultants, and Staff. Persons desiring 3
repositories.
members of the public with the l
- H. Prioritization of Unasolved -
to make oral statements should notify concurrence of the Subcommittee i
GenericIssues-Ofscuss proposed the ACRS staff member named below as Chairman: written st it i
priorities for a new list of approximately far in advance as is practicabhr so that accepted and made available to the 23 unresolved generic safety related appropriate arrangements can be made.
Committee. Recordings will be permitted issues.
During the initial portion of the
- l. ACRS Subcommittee Aetivities-meeting. the Subcommittee, along with only during those portions of the Discuss safety related activities of any ofits consultants who may be meeting when a transcript is being kept.
designated ACRSsubcommittees present, may exchange preliminary and questions may be asked only by including hydrodynamic effects in BWR views regarding matiers to be ' '
members of the Subcommittee,its dynamic containments and the effects of considered during the balance of the consultants, and Staff. Persons desiring insulation debris on containment sump meeting.
to make oral statements should notify The Subcommittee ^wiH then hear'^
the ACRS staff membernamed below as performance following a LOCA
'J. Meetug with NRC presentations by And hold discussions far in advance as is practicable so that Commessioners-Discuss 4 with representatives of the NRC Staff, appropriate arrangements can be made.
mport regarding the roles of the A its consultants, and other interested Durmg the initialportion of the m
review and evaluation of the proposed persons regarding tius review, meeting. the Subcommittee, along with DOE program for management and Further information regarding topics any ofits consultants who may be
'hmt=at of radioactive wastes.
to be discussed. whether the meeting prnent, may exchange preliminary
- K. Activitise o has been cancelled or rescheduled, the. views regarding matters to be Hear and Aam==fACRSMembers-Chairman's ruling on requests for the c nsidered dunng the balance of the reports of ACRS members regardmg activities as opportunity to present oral statements
- muting, individual ACRS members.
and the time allotted P.erefor can be The Subcommittee will then hear
'L ACRS Procedures ondProctices-obtained by a prepc d telephone call to presentations by and hold discussions Proposed ch,anges to ACRS Bylaws will the cognizant ACRS staff member, Mr.
with representatives of the NRC Staff, be considered with respect to the Herman Alderman (telephone 202/634 conduct of ACRS members as part of the 1414) between 8.15 a.m. and 500 p.m Its consultants, and other interested collegial body and as individuals-EST. Persons plannmg to attend this persons regarding this review.
s,{
june 6-4,1985-Agneda to be snecting are urged to contact the above Further information regarding topics
-[
cnnounced.
named individual one or two days to be discussed, whether the meeting
'j july 11-13.1985-Agends to be before the scheduled meeting to be has been cancelled or rescheduled the
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cnnounced.
advised of any changes in schedule, etc.,
Chairman's ruling on requests for the
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which may have occurred opportanity to present oral statements g
MaC. Hods, Deted: April 18,1985.
and the time allotted therefor can be
. AdvisoryOrdmitterManage:anatofficer.
go,,,, w, imam.
obtained by a prepaid telephone call to 1
the cognizant ACRS staff member. Mr.
[Ht Doc. 06-4730 Filed 4-234 a,45 arn) g,,;,,,,, g,eugjy, gi,,ctorfor pmjec, lohn Schifigens (telephone 202/834-
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satses caos innses.e
[FR Doc as 4r777 F11ed 4-23-45, a;45 am) 1414) between 8:15 a.m and 5:00 p.m l
EST. persons planning to attend this mm=== caos rense e meeting are urged to contact the above Adwtoory Comsnettee on Reactor named individual one or two days Sofeguards, *Cc..;;ae on Reactor A4 Moory Committee on Reactor before this scheduled meeting to be Sefeguards, mat.T.%ise on advised of any changes in schedule.etc
- W ACRS Subcommittee on Reactor and M y p which may have occured.
h ACRS Subcommittee on Dated: April 18.1985.
.Operstions wff! bold a meeting on May Safeguards and Sectarity wiu hold a M onen W. U berkin.
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TENTATIVE SCHEDULE FOR ACRS REACTOR OPERATIONS SUBCOMMITTEE MEETING, MAY 6, 1985, 1:00 p.m.
ROOM 1046, 1717 H STREET NW, WASHINGTON, D.C.
TIME TITLE EVENT DATE PRESENTER 1:00 p.m. Opening Statement
- ACRS Subcommittee Chairman 1:15 p.m. Recent HPCI/RCIC Problems Oct. 1, 1984 M. Wegner, IE Feb. 12, 1985 1:30 p.m. Millstone Unit 2 S/G April 10, 1985 M. Wegner, IE Tube Defects 1:45 p.m. Station Battery Problems Nov. 1984 -
J. Dyer, IE Present 2:00 p.m. Browns Ferry 3 Level Feb. 13, 1985 J. Monroe &
Indicator Event P. Wagner, Reg.2 2:15 p.m. Summer Premature Criticality Feb. 28, 1985 P. Burnett &
C. Hehl, Reg.2 2:30 p.m. Palo Verde 2 Weld Leaks in March 1, 1985 J. Collins, IE UHS Piping BREAK 2:45 p.m.
3:00 p.m. Trojan Heater Drain Pump March 9, 1985 C. Tramell, NRR Discharge Pipe Rupture 3:15 p.m. Grand Gulf 1 Malfunction March 11, 1985 C. Berlinger, NRR of Diesel Generator 3:30 p.m. Byron 1 MSIV Failure During March 14, 1985 V. Hodge, IE Recovery From Loss of Offsite Power Test 3:45 p.m. North Anna 2 Revision to March 15, 1985 J. T. Beard, NRR EDG Testing Requirements 4:00 p.m. Haddam Neck Feedwater Line March 16, 1985 P. Cortland, IE f
Tcnt. Schedule Reactor 2
Operations Mtg..May 6, 1985 4:15-5:00 OTHER EVENTS OF INTEREST p.m.
(No Formal Presentation)
Grand Gulf 1 MSIVs Fail to Feb. 10, 1985 C. E. Rossi Close (Update)
Kewaunee Spontaneous Start of Feb. 12, 1985 C. E. Rossi Reactor Coolant Pump Browns Ferry 2 Non-Radiological March 29, 1985 C. E. Rossi Fatality (Crane Hook)
Millstone 3 Flooding of ESF Room March 20, 1985 C. E. Rossi Byron 2 - Solvent Fire in HVAC April 11, 1985 C. E. Rossi Humidifier 5:00 -
Discussion and Adjourn 5:15 p.m.
RECENT SIGNIFICANT EVENTS TO BE PRESENTED NEXT TIME Catawba 2 Failure of Volume April 22, 1985 Undetermined Control Tank Oconee 1 Loss of Control Room April 25, 1985 Undetermined Annunciators 4
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H. ALDERMAN REACTOR OPERAT10NS AtRS SUBCOMM2TTEE MEETING ON LOCATIDji:
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ATTACHMENT D HANDOUTS FOR REACTOR OPERATIONS SUBCOMMITTEE MEETING MAY 6, 1985 WASHINGTON, D.C.
1.
Agenda and Staff Presentation 2.
Browns Ferry level indicator event 3.
Palo Verde 2 Weld leaks - microbiological induced corrosion i