ML20031B192

Forwards Proposal for Assessment of Contamination Distribution & Effectiveness of Decontamination Effort at TMI-2 Reactor,Per Request

ML20031B192
Person / Time
Site:	Crane
Issue date:	09/10/1981
From:	Milam S ENERGY, DEPT. OF
To:	Arlotto G NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
Shared Package
ML20031B191	List: ML20031B190 ML20031B192 ML20031B193
References
NUDOCS 8109300486
Download: ML20031B192 (13)

Text

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ENCLOSURE 1 (g

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t De'partment of Energy Idaho Operations Office 550 Second Street SEP 1 0 '.981 Idaho Falls, Idaho'-83401 s.

G. Arlotto, Director Division of Engineering Technology ToL NRC, Mail-NL 5650, Silver Spring, MD m.,g _,

.s g u

,c.1 FROM:

S. B. Milam, Assistant Manager for Plans, Budget'and Engineering Idaho Operations Office SUBJcC r:

A6373 - GENERIC ASSESSMENT OF TMI-2 CONTAMINATION DISTRIBUTION AND DECONTAMINATION EFFECTIVENESS At the request of Mr. C. Nilsen of your Chemical Engineering Branch, attached is a proposal for the assessment of contamination distribution and the effectiveness f

of decontamination efforts at the TMI-2 reactor.

Should you have any questions, please contact Mr. George Vivi g, ID's technical monitor for this task.

Attachment Y

C. Nilsen, NRC, Mail NL 5650, Silver Spring, MD - w/ attachment cc:

M. R. Hayes, NRC, Mail 11305S, Silver Spring, MD - w/ attachment (5)

G. L.'Vivian,.ID - w/ attachment W. W.-Bixby, 00E.-TMI - w/ attachment (m1CWO406 910924'~

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Distribution and Decentaminaticn Effectiveness A6373 A ~... g acar on 3 Sta:e 5 Pers:n o Curge Prie:::st itsestigator i ::ntrx="Crtr saa T

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(Sased 0:1 Constan: FY 1983 cottars)

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12 CEVELONENT 04 MILESTONE SCHEDULE

'Y 1951 H2 FY H3J Develop, fabricate, and test a portable

_03 o

. surface sampler Develop,, fabricate, test, and calibrate a a8 3

portable in situ activity measuring system i

Make one or more entries into the Reactor l

Building to sample / measure prior to 2'

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commencement of major decontamination ocerations T o' Make one or more entries into the Reactor l

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! ;ll2 i Building to sample / measure after comoletion of I

j major decontamination operations

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Distribution and Decontamination Effectiveness i

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13.

DATES AND TITLES OF PUBLICATIONS l

i None - this is a new project.

l 14.

SCOPE l

The primary cbjective of this program is to provide the Nuclear Reoulatory l

Commission (NRC) with information on the distribution of surface contamination j

inside Three Mile Island-2 (TMI) containment and on the effectiveness of the i

decontamination methods used on these surfaces.

This addresses needs expressed in Task 7 in the TMI Examination Task 2.2 Planning Group recommendations.

The j

method to be used involves a mix of surface sampling complemented with in situ l

gross measurements of surface beta and gamma activity.

Only partial inTormation on activity distribution is likely to be obtainable prior to decontamination duo to limited containment access, overriding ALARA (As Low As Reasonably Achievable) conniderations, and restricted access to containment surfaces.

For instance the pow crane is at present inoperative and only limited scaffolding exists inside containment, thus precluding any detailed survey high uoon the containment or 0-ring walls.

The planned work involves fabrication of a sampler that can orovide representative samples of total deposited activity on surfaces such as concrete, metal, or plastic and that is easily portable and simple to use.

The sampiing method to be developed is based on making a shallow drilling (0.02 to 0.10 inches) into the surface while simultaneously collecting the dust and chips on a filter by means of a vacuum cleaner.

The filter becomes the sample and is changed for l

each drilling.

The drill will be either wiped or changed each time as needed.

The complementary i_n, situ mecsurements needed to interpolate between sample points requires fabrication of a detector that is hand portable, collimated to look only at the surface of ir terest and well shielded from the general background fields (approximately 500 mR/'r gamma).

It should be capable of high count rates

[

and distinguish between beta and gamma activity.

Due to the above mentioned restrictions ~the sampling / measuring work will be limited to the ground level containment floor (305 ft level) and such portions of the containment walls, 0-ring walls, het spots, drains and stairwells as are accessible from this level.

If possible, surveys will subsequently be done on the second level (347 ft.).

Specific objectives are:

I 1.

Assemble and test a surface sampler.

I 2.

Assemble, test and calibrate a portable in, situ activity measurinp i

system.

I 3.

Make one or more entries to sample / measure prior to major decontamination i

work.

3 JeNces 40 F360 Pev 04 50 Contractor Ret No OE ACC7 76100157M-746 page

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F14.

SCOPE -(Continued)-

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-4. -Make one or more entries for measuring /samoling as circumstances' permit after major decontamination efforts are begun.

5.

Provide analysis of samples obtained and mesurement results.

6.

Analyze results and write report.

15.

RELATIONSHIP TO OTHER FEDERALLY FINANCED PROJECTS This program will interface with TMI through the TMI Department of Energy (00E) administered Technical Integration and Information Office (TIO).

l 16.

TECHNICAL ACCOMPLISHMENTS IN FY 1981 i

None. This is a new project.

I.

EXPECTED RESULTS IN FY 1982

, 17 '.

~ I j-It is expected that a sampler and a ~ detecMr system will be completed, and at j

least two entries into containment will be made to acquire samples and make measurements. The results will be analyzed and reported. Monthly progress and expenditure reports will be issued.

A midyear summary and financial report will also be issued.

! 18.

EXPECTED RESULTS IN FY 1983 i

Results will depend en the progress of the clant decontamination operaticn, the j

availabil'ty of access, status of the colar crane, ar.d access to the 347 and 367 i

ft levels.

If decontamination is partially complete, worx will be on the effectiveness of this operation on nuclide distribution.

If cecontaminatien is essentially ccmplete for containment surfaces, efforts will be.tc~ assess total decontamination effectiveness.

19.

EXPECTED RETULTS BEYOND BUDGET YEAR I

The work secpe and the budget beyond FY-lo83 are decencent upon the results of the efforts in FY-1982 and 1983. Assuming surface decentamination is essentially t ccmplete and containment =ccess is easier, efforts to assess internal centamina-tion of pipes, ducts and equipment will be made; however, this effort cannot te budgeted until results and/or estimates of completion of FY-1982 and 1983 work 1

scope are better understood, commu et % s=, ice w.746 y;.

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DESCRIPTION AND JUSTIFICATION 0F MAJOR MATERIALS, SUBCONTRACTS, AND OTHER

-UNU5UAL SIGNIFICANT COST ITEM 5 The-following materials and supplies are required to conduct the tasks of the

_ program.

(50001 FY-1982 FY-1983 Materials, Sucolies, and In-House Services Small ci:mponents and supplies for surface sampler 42 25 development-(Objective 1) and detector develepcent

. Objective 2).. Exact details unknown.

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i Total 5-42 5

25 l

l Subcontracts

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' Pacific-Northwest Labs

• 5 28 30 Total 3

28 30 Comeuter Services Computer services for data compilation 5

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and evaluation, as well as modeling.

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i Management Reserves This is a contingency fund for unexoected 3

0 5

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price changes and to take advantage of l

unforseen samoling or measuring cpportunities l

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5 10

• For consulation and assistance in evaluating and intercreting data relating

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UNUSUAL SI'PlIFICANT COST ITEMS (Con ti nued )

Comestic Travel Numbar of Number of Travelers Days on Projected Fiscal Making Travel Cost of Year Des tination Trio S ta tus Tri:

Purcose of Trio J18_2_

Harrisburg,Pa.

1 12 1.5K Entry procedure prep Harrisburg,Pa.

2 12 3.0M Aux. Sida. detec-tor checkout Harrisburg,Pa.

2 12 6.0K Entries to containment Harrisburg:Pa, l

12 1.5K Sample shipping coord.

P.a rri sbu rg,P a,

2 12 1.5K Training and orientation Harrisburg,Pa,

.1 5

2,3K Data cresenta-ticn Harri sttu rg, Pa.

1 5

2.0K Prog. management coord. and liaison I

Wa s hi.ng ton, D, C,

I 2.2K Spen ur orogram i

review 1982 Total 3 20.0K I

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. DESCRIPTION dND JUSTIFICATION OF MAJOR' MATERIALS. SUSCONTRACTS, AND OTHER

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Domestic Travel '(Continued)

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. Number of Number of Travelers Days en Projected Fiscal? -

Making Travel Cost of

' Year Destination Trio Status Trio Purpose of Trio

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19831 Harrisburg,Pa.

2 12 5 3.0K Entry Procedure prep.

j Harri sburg,Pa.

6 12 8.8K Entries into

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containment Harrisburg,Pa.

1 12 1.5K Samole shipping coord.

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Harrisburg,Pa.

2 12 2.7K Training and I

orientation

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'Harrisburg,Pa.

2 5

2.0K Data presentation Harrisburg,Pa.

2 5

2.0K Prog. Managemer.t coord. and liaison Washington,D.C.

2 4

2.0K Sponsor prcgram review y

>1983-Total

$22.0K l 21.. _ DESCRIPTION AND JUSTIFICATIONS FOR ALL EOUIPMENT ITEMS Not applicable, j22.

PROPOSED OBLIGATIONS FOR RELATED CONSTRUCTION PROJECTS 1

Not app 1' cable.

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UTILIZATION OF EXISTING FACILITIES AND TEST INSTALLATIONS 1

Not applicable.

25.

CONFLICT OF INTEREST There is no apparent conflict of interest.

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ENCLOSURE 2 p'

i GENERICEASSESSMENT OF TMI-2 CONTAMINATION LDISTRIBUTION AND DECONTAMINATION EFFECTIVENESS Objectives -

_.The primary objective of this program is to measure, characterize and quantify the surface ' contamination inside the TMI-2 containment building. This data,

- obtained from samples collected and measurements taken before and after a planned gross decontamination experiment will _ be used 'to determine the effectiveness of decontamination procedures used on the principal types of surfaces in containment. The total program is planned to be completed using a DOE program administered by the EG&G Technical Integration Office and an NRC program.

DOE Program Perform onsite work

- Containment Entries

- Provide a Surface Sampling Device

- Perform Sampling

- Provide a Survey Instrument

- Perform Radiation Surveys

- Provide Samples to NRC

- Provide Supplemental Data to NRC NRC: Program-Perform offsite work

- Define Generic NRC Data Needs

- Provide Sample Analysis

- Provide Data Reduction a

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- Correlate S' ample Data and Radiation Survey Data

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- Generate Radiation SurveyLand Contamination Maps

- Report Results

-.Comence a 't:istory of Auxiliary and Fuel Handling Building Decontamination

1) Define generic NRC data needs

$5K Determine NRC requirements-for sample analysis,

' data-generation and. data use. These requirements, especially the end us'e of the data, will influence the character of the entire decontamination study; determining what samples are required, where they should be taken and what analysis should be made.

2) Analyze samples

$168K The. object of this task would be to quantify radionuclides of interest from the samples

~

acquired in' the TMI-2 contair. ment before and after gross decontamination. These samples will be acquired by the EG&G Technical Information Office as part of the DOE sponsored decontamination studies. The samples will be shipped to the laboratory designated by the NRC for the analysis work.

3) Data reduction

$20K Check the data from the sample analysis for completeness and accuracy.

Insure that the data is in the proper fonnat, converted to the proper units and correctly correlated with the sample,

4

o

74) Analyze-data and generate _ radiation survey and

$30K contam5ation maps.

-Correlate.the sample data with the dose-rate survey Ldata measured at locations in the TMI-2 containment.

Use the resultant data / location information to generate

' contamination maps of. containment before and after gross decontamination. Correlate radiation survey information with the survey _ location in the TMI-2 containment. Use the resultant data / location information to generate radiation survey maps of containment before and after gross decontamination.

The radiation survey results will be obtained by the EG&G Technical. Integration Office as part of the DOE sponsc*ed decontamination studies.

5) Provide a decontamination report

$19K The decontamination report will include analysis data,- decontamination factors calculated from the data, radiation survey results, decontamination techniques.

decontamination effectiveness for each technique, decon-tamination effectiveness for the different types of containment surfaces and conclusions relating to the decontamination experi-ment such as man rem exposures, time required for decontamination and any problems occuring during the decontamination.

6) Beg.in history of ~the auxiliary and fuel handling

$50K building decontamination projects Begin generating a document which includes all existing facts and data relating to the decontamination of the auxiliary and fuel handlinq buildings at TMI-2. This history should include suu information as man hours required, man rem expended, decontamination techniques, decontamination effectiveness, for each technique, decontamination effectivenss for different surfaces and any problems occuring during the decontamination.

TOTAL 5292K

m

- J.,,Y December 18, 1979, UNITED STATES SECY-79-669 NUCLEAR REGULATORY COMMISSICN WASHINGTON, D. C. 20556 INFORMATION REPORT For:

The Commissioners Saul Levine Director, Office of Nuclear Regulatory Research From:

Executive Director for Operations Mh4vt Thru:

Subject:

MEMORANDUM OF UNDERSTANDING AMONG NRC, DOE, EPRI, GPU FOR POST-ACCIDENT EXMilNATIONS OF TMI-2 To infom the Comission of the agreement among NRC, DOE, Purcose:

EPRI, and GPU on the methods of interaction and coordination of efforts to achieve comon goals in TMI-2 data gathering J

as represented by a completed Memorandum of Understanding among the parties.

Discussion:

Following the letter from Chaiman Hendrie to DOE Under Secretary Deutch (copy enclosed) concerning -t.he need-to develop a coordinated program for the post-accident exa:nination of TMI-2, a Memorandum of Understanding (MOU) was developed th. ugh several meetings of senior representatives m

of NRC and the other organizations.

As described in the -

enclosed MOU, a Joint Coordination Group (JCC) has been formed which has appointed members to a Technical Working Group (TWG).. The Technical Working Group has had several meetings during which planning has teen. developed toward meeting the corrmon goals defined by the JCC and the TWG.

Also, as set forth in the MOV a Technical Integration Offka has been established at'IMI headed by a DOE representative and s_taffed by carsennei frem EG&G (Idano) to cooroinate the implementation of the plans.

he first of the early examination efforts prescribed by the TWG has been accomplished.

A 9-inch disk has been cut out of a containment penetration cover, allowing optical access to the containment and allowing for a detailed examination of the containment wall surface.

120555004747 1 9 A9C 9E9N

Contact:

N3 Ronald Foulds, RSR CFFICE DIRECTOR 42-7G23 dA b TON OC 20555 t

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.t, 2-The MOU will be signed by the Director of the Office of Nuclear Regulatory Research when DOE has the final draft prepared, by the end of December.

Coordination:

This paper has been concurred in by NRR.

ELD has no legal objection.

[

'W Saul Levine, Director

~

Office of Nuclear Regulatory Research i

Enclosures:

1.

TMI-2 Post-Accident Examination M00 2.

Chairman Hendrie Letter to Under Secretary Deutch e

e 4

i l

..., _ _