ML20027C889
| ML20027C889 | |
| Person / Time | |
|---|---|
| Issue date: | 08/09/1982 |
| From: | Advisory Committee on Reactor Safeguards |
| To: | Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-2001, NUDOCS 8210270385 | |
| Download: ML20027C889 (14) | |
Text
,'
4 - J? c o/
k JOINT MEETING I
p ACRT S MMITTEES ON REACTOR RADIOLOGICAL EFFECTS AND SITE EVALUATION CERTIFIED COPY NhN Mb JUNE 9, 1982 DATE ISSUED: AUGUST 9, 1982 WASHINGTON, D.C.
A joint meeting was held by the ACRS Subcommittees on Reactor Radiological Effects and Site Evaluation in Room 1046, 1717 H Street, Washington, D.C.
The purpose of the meeting was to review NRC Staff's proposed FY 84-85 research programs and budget pertaining to reactor radiological effects and site evaluation, and to pre-pare comments on these items to be included in a report to the Commission. Notice of the meeting was published in the Federal Register on May 24, 1982 (Attachment A).
The schedule of the items covered at the meeting is Attachment B.
The list of atteadees is Attachment C.
The meeting handouts are contained in the office files of the ACRS.
John C. McKinley was the Designated Federal Employee for this meeting.
Opening Statement Chairman D. Moeller opened the meeting with a brief statement on the purpose of the meeting. He stated that the Subcommittees planned to review and discuss NRC's proposed FY 84-85 research plans in the area of reactor radiological effects, siting and environ-mental impact. The Subcommittees would then prepare comments relative to research in these areas for consideration by the Full Committee. He added that a general overview would be provided this year rather than detailed comments on each piece of work.
Siting and Health F. Arsenault (RES) briefly introduced the various categories of past RES programs, e.g.,
information gathering for future environmental assessments, assessment of environmental impact of operating nuclear power plants, assessment of impact on the plants of post-licensing environmental changes, etc.
He noted that the Commission had instructed 8210270385 820809
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0 the Staff to place emphasis on operating nuclear power plants and that the EDO had directed a phase-down of siting and environmental impact research.
The RES Staff then made presentations on each Subelement within this Decision Unit:
a.
Siting and Environment W. Ott described the proposed FY 84-85 budget for various research programs on siting of reactors and remaining fuel cycle facilities (both existing and alternate sites).
He mentioned that a very significant effort is currently underway to extend the burnup of fuel in reactor cores.
Table S-3 in 10 CFR Part 51 (Table of Uranium Fuel Cycle Environmental Data), he stated, is based on 33,000 megawatt days per metric ton.
If NRC allows the industry to go to higher burnups, he added, the basis for granting those environmental reports as represented in Table S-3 would no longer be valid.
He felt that not much research is being done from the environmental standpoint.
As for Socioeconomic Effects of Accidents, the Subcommittees felt that more support was needed for this program to develop technically based methods for determin-ing the extent of psychological stress following an accident.
j b.
Health Effects
(
W. Mills reported the status of various projects in the health effects area.
In order to avoid duplication of effort in this area, he said, NRC/RES participates in a radiation research committee jointly with DOE and the National Institutes of Health to l'ook at all the federal research programs across the board. He pointed out that the ICRP #30 plutonium GI absorption factors might be a factor of ten too low, as indicated by the studies of metabolism of actinides (e.g., plutonium) in baboons.
He felt that this is
l 3
an important area that needs to be further pursued. He stated that studies on metabolism of thorium and yellowcake for workers are expected to be completed in 1982.
Dr. Mills said that parameters in ICRP #30 (Limits for Intakes of Radio-nuclides by Workers) were designed for occupational exposures and are not generally applicable to the general population, and that more research effort is needed for identifying nuclides of regulatory interest and for determining the dose parameters associated with them. Regarding the project "RBE of Fission Neutrons at Occupational Exposure Levels,"
questions were asked regarding the circumstances under which LWR operations personnel would be exposed to fission neutrons.
It was felt that fast reactors might benefit from such research.
As fnr the nuclear worker registry, Dr. Mills said that money is carried in the budget for feasibility studies of this registry. According to him, these studies have not been conducted to date since NRC is trying to work with the Atomic Industrial Forum which has been working on this for years for nuclear power plants, particularly in areas of doses received by transient workers.
Dr. Mills stated that NRC will continue to take interest in doses received by workers, but indicated the hope that any nuclear worker registry to be set up would be a voluntary one.
l l
The Subcommittees suggested that the Staff review DOE's neutron exposure records for plutonium workers.
4 c.
Earth Sciences L. Beratan presented the FY 84-85 budget projections for research programs in seismology, meteorology, hydrology and siting concepts.
He stated that work on geology and seismology done by USGS well covers the western states such as California, but not the East Coast. Major por-tions of the RES FY 84-85 budget in geology and seismology are proposed for Regional Studies to be conducted at the southeastern and north-eastern parts of the U.S.
Mr. Beratan said that USGS is doing some studies for NRC.
They are studies on strong ground motion, faulting, soil liquefactions, and evaluation of probabilistic hazard calculations, etc.
He also said that the meteorology and hydrology program will be essentially phased out by FY 84 and FY 85. He noted that the two NRC Branches on Earth Sciences and HLW are very closely coordinated even though HLW is under an entirely separate Decision Unit.
Occupational Protection R. Alexander described various contracts in the " Technical Assistance" and "Research" programs. He stated that areas that would receive emphasis include occupational exposure ALARA, health physics measurement improvement, internal emitter control dose rate reduction at nuclear power plants, etc.
He mentioned A. Roecklein's (RES) review report which indicates that the different design features of the Canadian reactors had resulted in fewer outages for repairs or maintenances, and thus much lower collective doses than the U.S. plants.
He said that the Canadians have a man-rem budget
5 system which means that the Ontario Hydro Managers are appraised on how well they have done in meeting the man-rem objectives.
Mr. Alexander felt that this kind of system usually works pretty well. He also explained that the Optimization Studies, similar to ALARA programs, would be analytical techniques for minimizing human health effects and economic costs. The Subcommittees felt that more support would be needed in this area.
Reference was made by the Subcommittees to the 5/12/82 letter from P. Shewmon
( ACRS Chairman) to the ED0 regarding control of occupational exposures. The inmportance of control and removal of radionuclides in the reactor cooling systems to minimize occupational exposure was re-emphasized. The NRC Project Manager, M. Jankowsky, briefly described the projects on decontamination effec-tiveness, corrosion product buildup, and the impact of decontamination on waste solidification. He stated that fission product buildup and transport are under another Decision Unit.
However, within these projects, there are programs that study the effectiveness of various containment systems in controlling fission l
product releases.
He also mentioned the EPRI project on removal of acci-l dental fission products from primary systems. According to Mr. Jankowsky, l
once the basic information is obtained, research effort will be concentrated on j
the operation requirements for exposure reduction. Thereafter, the staff will prepare recommendations on facility design changes (e.g., remote control processes, proper shielding, etc.).
He emphasized that these changes would be mainly for the early stages of design, not after the facilities are built,
6 Emergency Preparedness M. Jamgochian reported on the various research projects (both ongoing and pro-posed) in emergency preparedness. He stated that the overall objective of these projects would be to assist in upgrading emergency preparedness at NRC-licensed facilities.
Four major projects were discussed:
human factors in emergency response (e.g., decision making at the early stage of an acci-dent for recommending protective actions, etc.) (contracted to Oak Ridge);
handbook on development of adequate emercency plans for fuel cycle and material licensees (In 1981, NRC published advance notice of proposed rule-making requiring emergency plans at these facilities); confirmatory research on optimum frequency and scope of emergency exercises; evaluation of qualifications necessary for emergency preparedness personnel.
He stated that the NRC-FEMA Interagency Agreement (still under development and nego-tiation) would enable the NRC to share both the costs and work required for many emergency preparedness projects.
Fission Product Source Term 1
M. Silberberg gave an overview / perspective of research efforts regarding fission l
l product source terms.
He mentioned that a number of research needs in this area have been identified in NUREG-0772 (Technical Bases for Estimated Fission Product Behavior During LWR Accidents), and are being pursued at Battelle-Columbus to come up with a revised best-estimate source term.
He said that large uncertainties are expected to be associated with these estimates, and that effort would be needed to confirm that they are the best estimates, and to reduce the uncertainties.
Mr. Silberberg briefly described the proposed international program (HARVIKEN V) for testing reactor coolant system fission product transport.
l
7 He said that the NRC and EPRI (which has the U.S. lead) are both involved in an international working group on this project to demonstrate not only the phenomenon, but also that the calculations are reasonable.
He added that detailed work is also being done in the severe core damage program to seek additional information that is importcnt to fission product source term.
R. Sherry described the status and schedule for these NUREG-0772 follow-on projects.
He said that a draft report on these projects, giving the revised source term estimates for the PWR with the large, dry containment, would be completed by late summer for comment.
The next step would then be to look at BWR accident sequences and PWR ice condensers, and to issue a report in early calendar year 1983.
He also described GE's Fission Product Scrubbing Program which uses both experimental results and l
theoretical models to calculate suppression pool decontamination factors l
l (DF) during a postulated degraded core accident.
This GE-developed model describes fission product particulate decontamination (removal) factors (DF) t as a function of particle size.
Apparently, GE has come up with DFs ranging from 40,600 to 9,000, depending on the particle sizes of materials which are formed from the core meltdown accident from the vapor condensation.
Mr.
Sherry mentioned that, as a result of ACRS' past recommendation, the fission product research programs are now under close peer review by the ANS ad hoc group on source terms, the DOE source term evaluation group, the IAEA technical committee on airborne fission product release, etc.
The Sub-committees commented that DFs for various systems should be tied together in considering the overall source term.
8 Fuel Cycle and Material Facility Safety Research D. Solberg described the background and objectives of the research program (FY 82, 83, 84, 85).
He mentioned that an Accident Analysis Handbook, currently in draft form, will be issued as a NUREG report in FY 83, and that fuel cycle and materials safety research are now under the Risk Analysis Decision Unit.
The Subcommittees indicated the need for research to better define the accident source terms at LWR fuel cycle and material facilities, and for verifying the models being developed to simulate various processes and accidents.
Reactor Facility Process Control
~
C. Nilsen, P. Worthington and M. Jankowsky presented the objectives and pro-posed FY 84-85 budget for projects on LWR water chemistry adjustment, onsite LLW treatment and storage, criticality safety assessment, hydrogen combus-tion mitigative and preventive schemes (e.g., study of effects of foams, I
fogs, CO, etc. for mitigating H combustion), and fission product 2
2 control program for evaluating effectiveness of engineered safety features under severe accident conditions (e.g., aerosol effects on the system design, charcoal filter performance, etc.).
Mr. Ebersole was concerned that the presence of foam in the containment would interfere with the decay heat removal process.
The Subcommittees requested a better definition of the goals for the projects on criticality and on hydro-gen combustion mitigative and preventive schemes.
l l
9 Decommissioning D. Calkins described proposed FY 84-85 programs and budget in this area.
He indicated that the work in the past (since 1975) has generated many reports covering the technology, safety and costs for decommissioning reactors and other fuel cycle facilities.
The next stage would be to complete a report on post-accident decommissioning of fuel cycle and non-fuel cycle facilities, and then the reports on decommissio.. sng for advanced reactors and advanced fuel fabrication facilities.
Mr. Calkins mentioned the new project for improving the data base for ALARA guidance on de minimis levels (i.e., residual contamination acceptable for unrestricted release), aai for developing guidance on instrumentation measurement techniques and data analysis for ter.cination surveys.
Dr. Moeller was concerned over Mr. C. Nilson's statement that the fuel cycle area routinely suffers budget cuts due to the fact that it is considered to have less priority than the reactor research programs (e.g., TMI-related items).
Mr. Calkins added that funding had not been a problem for the decommissioning program.
Finding suitable contractors has been more of a problem.
PNL has been the major contractor.
The pace of NRC's research in this program has been set by PNL's ability to apply knowledgeable manpower to the program.
Executive Session During this open but unrecorded session, Subcommittee Members and Consultants discussed their comments on the programs presented.
A draft report has been e
i s
10 prepared for discussion at the July ACRS meeting, and for later inclusion in the ACRS report to the Commission regarding NRC FY 84-85 research.
l The meeting was adjourned at 5:00 p.m.
i A transcript of the meeting is available in the NRC's Public Document Room at 1717 H St., N.W., Washington, D.C., or can be obtained at cost from Alderson Reporting, 400 Virginia Ave., S.W., Washington, D.C., (202) 554-2345.
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be invdved in and adjudicatory I have determined, in accordance with Safeguard, Subcommittees on Reactor.
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published in the Federal Register on The ACRS Subecmmittees onReactor meeting to public attendance to prevent
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presInted by members of the public, Washington, D.C.%e Subcommittees Sunshine Act. 5 U.S.C. 552b[c)(9)b.
record!ngs will be permitted only during and their consultants will review NRC's th:siportions of the meeting when a FY 1984 and FY 1985 research plans in Dated: May 20,1982.
transcript is being kept, and questions the areas of reactor radiologicaleffects.
John C. Hoyle, may be asked only by members of the siting and environmentalimpacts.
Advisory Committee Management Oficer.
Committee,its consultants, and Staff.
Pzrsons desiring to make oral In accordance with the procedures pra owns two u-at an.=i statereents should notify the ACRS outlined in the Federal Register on s u mocootrsso4 Hs' Executive Director as far in advance as September 30,1981 (48 FR 47903), oral or i
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i nIcessary time during the meeting for be permitted only during those portions Issuance of Amendment to Facility such statements.Use of still. motion of the meeting when a transcript is being Operating Ucense; Nebraska Public picture and television cameras during kept, and questions may be asked only Power District this meeting may be limited to selected by members of the Subcommittees, their consultants, and Staff. Persons desiring he U.S. Nuclear Regulatory portions of the meeting as determined to make oral statements should notify Commission (the Commission) has I
by th Chairman. Information regardmg the Designated Federal Employee as far issued Amendment No.70 to F=ility thi time to be set aside for this purpose may be obtained by a telephone call to in advance as practicable so that Operating License No. DPR-46 lisued to i
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appropriate arrangements canbe made Nebraska Public Power District (the Fril:y) prior to the meeting. In view of to allow the necessary time during the licensee) which revised the Technical ths possibility that the schedule for m'eeting for such statements.
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ACRS Executive Director if such otherinformation(Sunshine Act The amendment modifies the rescheduling would result in major Exemption (9)b).One or more closed' Technical Specificattens to permit inconvenience.
sessions may be necessary to discuss operation of the facility during startup I h:ve determined in accordance with such information.To the extent...
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to members of the public in attendance.
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Procedures for the cond'uct of an Radiological Effects and Site Advisory Committee Act, that it may be, participationin ACRS meetings were '
Evaluation; Meeting necessary to close portions of this published in the Federal Register on De ACRS Subcommittees onReactor meeting to public attendance to prevent n"totember 30,1981 (46 FR 47903).
Radiological Effects and Site Evaluation premature diselosure of budgetary t eccordance with these' procedures.
will hold a joint meeting on }une 9,1982 information %e authodty fu such hr written statements may be in Room 1046,1717 H Street NW.
closure is Exemption (9)b to the presInted by members of the public, Washington. D.C.The Subcommittees Sunshine Act.5 U.S.C.552b(c)(9)b.
recordings will be permitted only during and their consultants will review NRC's Detedway 20,1062.
th:se portions of the meeting when a FY 1984 and FY 1985 research plans in transcript is being kept. and questions the areas of reactor radiologicaleffats, John C. Hoyle, may be asked only by members of the siting and environmentalimpacts.
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In accordance with the procedures p an. euent ru.4 s.n-en mes =1 l
P;rrens desidng to make oral outlined in the Federal Register on salmsoccos neo4 Ns'.
l stehments should notify the ACRS September 30,1981 (46 FR 47903), oral or Executive Director as far in advance as written statements maybe presented by practicable so that appropriate '
members of the public, recordings wil)
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portions of the meeting as determined to make oral elatements should notify Commission (the Commission)has by th2 Chairman. Information regardmg the Designated Federal Employee as far issued Amendment No.79 to Facility the time to be set aside for this purpose may be obtained by a telephone call to in advance as practicable so that Operating Ucense No. DpR-46 issued to thz ACRS Executive Director (R. F..
appropriate arrangements can be made Nebraska Public Power District (the to allow the necessary time during the licensee) which revised the Technical Frally) prior to the meeting. In view of I
the possibility that the schedule for meeting for such statements.
Specifications for opeation of the ACRS meetings may be adjusted by the De entire meeting will be open to b Cooper Nuclear Stationlocated in Ch:1rman as necessary to facilitate the public attendance except for those Nemaha County. Nebraska.ne sessions which may be closed to prevent amendment is effective as of March 23, c:nduct of the meeting. persona pl:nning to attend should check with the premature disclosure of budgetary and 1982.
ACRS Executive Directorif such other information (Sunshine Act ne amendment modifies the Exemption (9)b). One or more closed' Technical Specifications to permit rescheduling would result in mafor ressions may be necessary to discuss operation of the facility during startup Ihave determined in accordance with euch information.To the extent...
for a period not to exceed 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />,
inconvenience.
l bsection 20(d) Pub.p.92-463 that it la.
practicable, these closed sessions will.
between March 22 and March 25,1982 i
A N. rrec#marr /d
i PROPOSED AGENDA FDR JUNE 9,1982 JOIN 7 MEETING ACRS SUBCCMMITTEES ON REAC'IOR RADIOI.DGICAL r tru. n AND SITE EVAUATION RCni 1046, 1717 H ST. NW., WASHIN3 ION, D.C.
8:30 a.m.
OPENING STATEMENT Dr. Dade W. It>eller, Subeceittee Chairman 8:45 a.m.
IRC Staff Presentation cn Decision Unit 4 (Siting and Health), Subelements covered:
1.
Earth Sciences (4.a.)
2.
Siting and Envirarient (4.b.)
3.
Health Effects (4.c.)
(F. Arsenault, RES/DHS.N)
BREAK 10:15 a.m.
10:30 a.m.
NRC Staff Presentation on Decision Unit 2 (Facility Operations):
1 Sabelement 2.c., Occupational Protection (R. Alexander, RES/OPBR) 2.
Subelement 2.a., Emergency Preparedness (Haman'EngUieering and Man-Machine)
(M. Jamgochian, RES/HFBR)
IUNCH 12:00 Noon 6
I 1 00 p.m.
NRC Staff Presentation cm Decision Unit 6 (Accident Evaluation & Mitigation), Subelement 6.d.:
Fission Product Source 'Ibrm (M. Silberberg, R. Sherry, (RES/FBBR) 2:15 p.m.
NRC Staff Presentation cn Decision Unit 1 (Reactor and Facility Engineering),
Subelement 1.d. Ebel Facility Process Control (D. Solberg, RES/'IMRB) 1.d. Reactor Facility Process Cbntrol 2:45 p.m.
(K. Steyer, RES/CEBR) 1.6. Deccmissioning (Process Control Subelement) 3:15 p.m.
(K. Steyer)
Sabecrmittee discussion and preparaticn of pertinent 3:45 p.m.
Chapters of Safety Research Program Report
/
4:30 p.m.
Adjournment ATTitCNAIENT 4
i ATTENDEES JOINT MEETING OF THE SUBCOMMITTEES ON REACTOR RADIOLOGICAL EFFECTS AND SITE EVALUATION JUNE 9, 1982 WASHINGTON, D.C.
l l
D. Moeller, Chairman E. Podolak R. Axtmann, Member W. Mills J. Ebersole, Member L. Beratan F. Parker, Consultant W. Ott S. Philbrick, Consultant A. Murphy D. Orth, Consultant T. Schmitt R. Foster, Consultant R. Alexander J. McKinley, Designated Federal Employee F. Arsenault R. C. Tang, Staff P. Hayes J. Donoghue, Fellow J. Foulke M. Silberberg l
R. Sherry M. Jankowsky P. Worthington C. Nilsen G. Calkins D. Solberg S. Bernstein l
M. Jamgochian 1
Others l
D. Townsend, New Mexico Technology Review R. Carr, Bechtel l
MTTACHmt/fr 0
.