ML19322D738
| ML19322D738 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/30/1980 |
| From: | Feinroth H ENERGY, DEPT. OF |
| To: | Budnitz R NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML19322D736 | List: |
| References | |
| NUDOCS 8002250743 | |
| Download: ML19322D738 (18) | |
Text
_ _ _ _ _. - _ _ _ _ _ _ _ _ _ _
~
Department of Energy Washington, D.C. 20545 January 30, 1980 Mr. Robert Budnitz, Director Office of Nuclear Regulatory Research U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Budnitz:
Transmitted herein for your information is the record of the meeting of the TMI Information and Examination Program Tech-nical Working Group meeting held at Sandia on December 10 and 11, 1979.
If you have any questions, please contact me or A. C. Millunzi.
Sincerely, M
Herbert Feinroth, Chief Nuclear Reactor Evaluations Branch Division of Nuclear Power Development Enclosure 8002250 l
R: port of Technicci Working Group Meeting TMI Information cnd Exa=inction Program Albuquerque, NM Dec. 10-11, 1979 Task 1.0 Instrumentation and Electrical Equipment Survivt.bility A general overview of the draft report by the instrumentation and electrical equipment planning group (11-30-79 version) was given.
At this point, 138 items (out of approximately 900 listed) have been proposed for recovery and, of this number, 31 have been tentatively assigned priority one.
r;neral recommendations, the following are worth stressing here:
Of the sevcr 1 As soon as possible, a remote test program (i.e., testing from the 1.
cable room) for instruments, electrical equipment, etc., to establish the operational status (within spec., or not) for all instruments and electrical equipment within the reactor building should be developed.
This work A diagnosis of out-of-spec. equipment should be attempted.
(
should be done prior to decontamination and without disturbing the equipment.
The predicted behavior of class IE electrical equipment should be 2.
correlated with actual performance.
If significant discrepancies exist, further analysis would be warranted. A similar correlation should be attempted for selecte. items of non-1E electrical equipment.
An instrumentation and electrical equipment data book should be compiled 3.
to document, in readily available form, all pertinent pic end post accident information.
4.
Items 1 through 3 should be accomplished by engaging the services of a contractor as soon as possible.
Items 1 and 2 are obviously time the urgency of item 3 is simply that much of the data needed urgent; for accurate planning would be contained in such a co=pilation.
A portion of the presentation was devoted to the future status and activities of the planning group. The planning group presented a list of specific activities which included the following:
Reissue new version of draf t based on comments received from TWG and planning group through January 15, 1980.
Final document by March 15, 1980.
Expand the test strategy and justification portion of the planning document.
Refine the selection list.
For the immediate future, the specific response from the Technical Working l
l Group was the f ollowing:
i
Refine the priority one selection list and provide a more detailed l
1.
analysis of the selsetion rationale.
This task should be accomplished by January 30, 1980.
the list of priority one items using the TIO request form Transmit 2.
to DOE /TIO so that cost estimates can be developed to obtain el:e requested data on the operational status of these items and subsequent r
approval from DOE (Millunzi).
3.
Continue work necessary to complete the planning document.
The completed document will be furnished to DOE /TIO so that the TIO 4.
can develop cost and schedule of the total program under this task.
l i
l
TWG Review of Task 2.1 Draft Report The recommendations of the Task 2.1 (Fission Product Transport and Deposition and Environment Characterization) Planning Group were presented to the TWG at this meeting. The presentation reviewed the work detailed in the Planning Group draft report, which was distributed the first day of the In developing recommendations, the Planning Group considered the meeting.
various technical areas which could benefit from data gathered at TMI under
- Task 2.1, and proceeded to recommend and prioritize tasks / actions for supplying data in each area. The group then reevaluated all tasks and identified those of highest priority f rom an overall program standpoint.
The Planning Group recommended that continued technical guidance be provided in implementing these tasks, specifically to provide additional detail f or certain task procedu es, to evaluate and interpret data as it is obtained during this program.
the TWG With regard to the Task 2.1 recommendations and draft report, decided that the following actions will be taken:
The Task 2.1 draf t report will be reviewed by members of the TWG and written comments will be sent to the Task 2.1 Planning Group by January 10, 1980.
The Planning Group will respond to co=ments provided by the TWG 31, 1980. The Task 2.1 Planning Group will incorporate by January the agreed to comments received f rom the TWG in the final Plcnning The final report will be completed by February 29, Group report.
1980.
Members of the TWC provided the following immediate comments on the content of the draft report:
The need exists to more clearly delineate the interfaces between actions recommended under Task 2.1 and those which should be taken under other tasks in the TMI Examination and Information program.
The containment radiation survey as recommended by the Planning Group may require a substantial / excessive commitment in terms of available man-rem to perform setivities at TMI. The strategy for that survey may need to '
refined and/or remote methods for acquiring the data should be qonsidered.
Members of Task 2.1 should participate in a review of the Task 2.2 (Decontamination report on the recent DOE /EPRI decontamination workshop (11/27-29)). The recommendations of the Task 2.1 group regarding generic.information to be obtained in the area of plant decontamination should be incorporated in that review.
The immediate request for samples from the sump, bleed tanks and miscellaneous waste holdup tank was approved by TWG.
DOE-Hdqtrs will take subsequent action for authorization to proceed.
l
Task 2.2 Decontamination / Radiation-Dose Reduction Technologies 11-13, 1979, meeting at EPR1 headquarters As per agreement at the September in Washington, D.C., a seminar-workshop on decontamination / radiation-dose reduction technologies was organized and held at Hershey, Pennsylvania, Nove=ber 27-29, 1979. A brief report covering the highlights of tha seminar-workshop was given at the TWG meeting at Albuquerque.
Approximately 170 specialists, including the participants, attended the seminar-workshop. By all criteria Inforretion flowed from two directions:
the seminar-workshop was a success.
f rom those intimately f amiliar with TM1 plant status and recovery plans, and from specialists who have acquired extensive decontamination knoaledge from prior experiences.
The TWG agreed that by January 1,1980, Art Carson (EPRI) and A. C. Millunzi (DOE) will establish a meeting date to (a) review a draf t of the cape recorded proceedings; and (b) develop an executive summary of the proceedings.
The executive summary will include a list of "do's" and " don'ts" relative to the planning and implementation of decontamination efforts.
The TWG recommends that a contract or contracts be awarded to document decontamination and waste nr.nagement activities conducted as the result of TMI R. R. Smith will prepare a scope of work to be contracted.
recovery operations.
The TWG recommends the formation of a planning group concerned with the above activities with R. R. Smith (ANL-EBR-II) holding the lead responsibilities.
By January 15, 1980, Smith will generate a list of recommendations for assignment Recommendations will be solicited from GPU, NRC, DOE to the planning group.
and EPRI. The purpose and scope of this planning group will be consistent with those developed at the TWG meeting in September 1979 in Washington, D.C.
wm s
w r
4 Task 2.3 Early Containment Penetration and Monitoring required at this time No action by the Joint Co-ordinating Group 4 0 for this task.
The purpose of this task is to obtain generic data required to assure safe entrance into contaminated facilities and minimize radiation exposure to workers during auch activities. This data vill be used to develop procedures and equipment.
Messrs. P. Yarrington at.d A. Millunzi will submit by January 30, 1980, action in this area to the Technical Working a recommended course r
Group for approval.
r i
f l
e
.n m
a 1
y
Task 3.0 Radioactive Waste Handling The purpose of this task is to obtain data on the demonstration of new and environ =entally acceptable techniques for processing radioactive vastes and defined scope for this task.
for transporting them. There is at present rul However, a meeting among several working group members is scheduled 12/17 to explore several possibilities including:
obtaining data on new methods for ion exchange, adsorption, or (1) filtering the radioactivity from TMI containment water.
obtaining data on new methods for solidifying resins and reducing (2) the volume of combustible wastes, and for tra.tsporting them.
Based on the results of this meeting, a defined scope of work will be prepared by DOE (Feinroth/Falci) for presentation to the TWG af. its next meeting.
I l
l l
Task 4.1 Damage Assessment - Reactor Building The purpose of this task is to obtain a generic assessment of the suitability of items in containment to sustain the effects of a major accident.
This will be accomplished by obtaining a good visual examina-tion and record of the condition of equipment, structures and exposed surfaces.
An agreement was reached by the TWG that:
1.
The TIO will make arrangements with GPU and Bechtel to take any additional photographs that may be needed for those TWG approved tasks that are scoped by the various Technical Planning Groups.
2.
The T10 will work with GPU and Bechtel to assure that all such requests will minimize TM1-2 personnel exposure.
l 1
l
d Task 4.2 Quantify and Characterize the Debris in and Around the Reactor Building Sump of this task is to provide information on the type of size of The objective debris that may have been formed during the accident and migrated to the sucp.
Such debris has the potential of obstructing su=p screens and in turn could impair the performance of ECCS pumps.
The plan as outlined would have primarily consisted of photographing the sump However, the scope of work outlined in task 2.1, prior to and after draining. includes a sub-task No. 2 which outlines a sa=pling Fission Products Transport, plan for obtaining more definitive information on the debris in the sump.
The TWG decided that since Task 2.1 would provide sufficient information to quantify and characterize the debris, Task 4.2 was no longer required and was
~
therefore deleted.
i I
1 l
4 Task 5.1 Establish Data Bank No action by the Joint Co-ordinating Committee is required at this time for this task.
In Mr. A. C. Millunzi presented the status and activities in this task.
summary, the data bank at EPRI is being used as the central repository for all data from this program. A meeting will be at EPRI headquarters on December 14-15 between DOE (Millunzi), EPRI (Simard) and the Technical Integration Office (Kocsis) to review the operation of the storage and A plan of action will be prepared to ensure retrieval system to be used.
that all data generated in this program will be stored and be easily retrievable.
The schedule Reports as well as data generated by this program will be stored.
and milestones for this plan of action will be submitted to the Technical 20, 1980.
Working Group by Messrs. Millunzi, Simard, and Kocsis by January
Task 5.3 Archival Storage DOE /TIO is perfoming a broad review of f acilities ed management capabilities for examinations, analyses, storage, and disposal of equipment Results will be obtained by January 31, 1980.
samples and cor:ponents.
'It was agreed that archival storage should be in one location and the possibilities are limited to DOE laboratories INEL, ORNL, Savannah River and The criteria vill be:
an area with controlled access, ability to Hedl.
handle radioactive components and samples in nearby hot cells, ability to physical}y accomodate casks up to 55 gal. D.O.T. drums, approximajely DOE-ID 5,000 ft with capability for expansion to approximately 10,000 ft will take the lead in locating the most suitable storage area.
i l
i l
Task 6.1 Primary System Pressure Boundary Characterization In accordance with commitments made at the Technical Working Group meeting of September 13, 1979, the question of technical data requirements to permit conclusions regarding the capability of key primary system pressure boundary components to fulfill their design functions was presented to EPRI's existing 24, 1979. Following
-Pressure Vessel Study Group at their meeting of October initial discussions at that meeting, a special subcommittee of the study group was established under the chairmanship of S. Bush to consider this It was indicated that preliminary response was expected question specifically. It also was noted that the generic issue of continued by mid-January 1980.
use of a component offer experiencing C (emergency) and D (f aulted) transients was discussed at the last two meetings of the ASMI pressure vessel code committee, at the behest of EPRI representatives.
As the result of Technical Working Group discussion., it was agreed that consideration will be given to the TMI-2 reactor pressure vessel as well as to the RPV head, as first called for, and that request would be made ofIn S. Bush to include a GPU representative on his special subco==ittee.
addition, commitment to provide a written report of preliminary findings and recommendations by January 20, 1980, was confirmed.
l l
l
Task 6.2 Mechanical Components A written report of Mechanical Components Planning Group activities and This included acco=plishments was presented to the Technical Working Group.
- first draf t listing of candidates for examination and brief notation as to the basis for each nomination.
As the result of Technical Working Group discussion of this topic, it was agreed that the following activities will be carried out by the MCPG in order to accomplish its assignment:
Finalize the list of candidate components for examination including 1.
clear identification (by tag numbers) and recommendations f or testing This action methods and schedules, decontamination constraints, etc.
will be completed by January 31, 1980.
2.
Assign priorities to listed items.
Sharpen the specific justification provided for selecting the 3.
candidate components listed.
Describe the rationale for not including various other components 4.
(e.g., ECCS, containment spray).
Final list of candidate components will be submitted to the Th'G 5.
by February 1,1980.
i l
r
Task 7.1 Criticality Control Study A memo was circulated which addressed the concern over establishing a method of reactivity monitoring during THI-2 damaged core fuel removal to assure Several alternatives continuous confirmation of the.sub-critical state.
A were mentioned including noise analysis and pulsed neutron methods.
standby neutron poison system was mentioned as a possible back-up if needed.
A more detailed investigation of which instruments can be used, and their effectiveness, will be needed before decisions can be made on reactivity monitoring methods.
GPU clearly has the responsibility for assuring core sub-critical configuration GPU will review the situation discussed in the memo and and monitoring.
communicate with NRC on the subject.
The TWG recommends that the TWG take no further action on the criticality control monitoring at this time.
It is noted that there are three or four organizations currently investigating this same issue.
Task 7.2 Core Damage Assessment The objective of the Core Assessment Planning Group is to recc= mend a program of inspections and measurements that can reasonably be performed at TMI-2 to characterize the undisturbed damaged core conditions.
The following is a summary of ' activities since the Septe=ber 1979 meetit.i.
of the TWG.
The planning group was f ormed consisting of members of Reactor Vendors, DOE, EPR1, NRC and various National Laboratories.
An initial meeting was held November 19, 1979, to organize the Planning Group and summarize ideas on core inspection.
A summary listing of potential measurements and inspections was prepared.
An outline of the planning document was formulated and assignments were made for preparation of "draf t" sections.
ORNL agreed to take the lead in preparing a draft document on measurement / examination techniques. They will obtain input from other participants in the Planning Group.
A draft document will be issued by January 29, 1980.
During the TWG meeting on December 10-11, 1979, the following suggestions were made:
The Planning Group should identify any instrunents or procedures that require development prior to application. These should be factored into the R&D plan to assure adequate lead time for development.
The latest analyses of core damage should be reviewed to incorporate latest thinking on the condition of the fuel into the planning study.
Attention should be directed at getting a view of core conditions from outside the vessel prior to head removal.
Task 7.3 Packaging, Shipment, Disposal of Fuel The purpose of this task is (a) to study various options of technical approaches to the packaging, shipment and removal of the da= aged fuel at TMI and (b) to obtain data on the preferred options by sponsoring development and demonstration of techniques and equipment not presently state of the art.
DOE (Feinroth) stated that a DOE contract has just been placed with Allied Results should be Gulf-Nuclear Services Co. to perform the initial study.
available by the March 1980 required date. A review of the approach to be taken in the study is scheduled on December 17, 1979. A progress report will be made at the next meeting of the TWG.
1 i
Task 7.4 Fuel Experiment and Examination Program No action by the Joint Co-ordinating Group is required at this time for this task.
This task is on schedule for the submission of the first draft of the progra:
P an by the end of April 1980.
l The activities of this task were described.
In summary, the Planning Group is developing criteria to be used to select specimens from the TMI-2 core The members will submit to A. C. Millunzi (Planning Group for this program.
18, 1979, recommendations for the examinations of 1
Chairman) by December The chairman will review these, compile them into a single list TMI-2 core. the list to the Planning Group members in preparation for the and submit next Group meeting to be held on or about January 20, 1980.
At present the Group will use the following guidelines for selection of specimens for examination and/or experiment:
Critical data.
Data required:
to resolve safety issues; to 1.
improve reactor design and/or operation; to modify regulatory guides or standards, etc.
2.
Data not critical but of significant technical importance.
the above requirements but is technically 3.
Data which does not meet interesting.
l l
Sandia Laboratories date.
DECEMBER 7, 1979 f;y;'l,y;0;,J"a KIRTLAND - law ENFORCEMENT to:
050 hom:
G. R. OTEY, SLA 4440 (PHONE 4-9945) subject:
6 ATE ADMITTANCE PLEASE ADMIT VISITORS LISTED BELOW THRU EITHER THE WYOMING GATE OR GIBSON GATE TO ATTEND A 3-DAY MEETING (UNCLASSIFIED)
IN BUILDING 20360 (MONDAY, 12/10, 1:00 PM) IUESDAY, 12/11, 8:00 AMJ WEDNESDAY, 12/12, 8:00 AM).
BIRGE, LARRY (EG&G)
BIXBY, WILLIS W.
(DOE)
BURTON, HAROLD M.
(EG&G)
CARSON, ARTHUR B.
(EPRI)
FEINROTH, HERBERT (DOE)
FOULDS, RONALD B.
(NRC)
HOPKINS, WILLIAM C.
(BECKTELL/GPU)
KULYNYCH, GEORGE (B&W)
LEVINSON, MILTON (EPRI)
LEYSE, ROBERT (EPRI)
LOWENSTEIN, WALTER B.
(EPRI)
MCCONNELL, JAMES F.
(GPU)
MILLUNZI, ANDREW C.
(DOE) t MINER, SIDNEY (NRC)
SHERRY, RICHARD R.
(NRC)
(
SIMARD, RONALD L.
(EPRI)
TILLER, ROBERT (DOE)
VOLLMER, RICHARD R.
(NRC)
WHITESEL, ROBERT N.
(EPRI)
WILLIAMS, RONALD L.
(GPU)
WILSON, RICHARD F.
(GPU) p
---,,