ML20136A812

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Requests Release of Areas Used for Mixed Oxide Fuel Fabrication from Pu Status. Pu Release Survey, Supporting Decontamination Efforts & Request,Encl
ML20136A812
Person / Time
Site: Framatome ANP Richland
Issue date: 11/25/1985
From: Malody C
SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER
To: Crow W
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
26141, NUDOCS 8601020308
Download: ML20136A812 (40)
v • d • e


Text

-

RETURN TO 396-SS F#4 ERON NUCLEAR COMPANY,INC.

  • hNit 2101 HORN RAP 10S ROAD. Po sox 130. RICHLAND.WA 99352 60913758100 TELEX 152878 y

November 25, 1985 h

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Mr. W. T. Crow, Acting Chie f Uranium Fuel Licensing Branch Division of Fuel Cycle and Material Safety, NMSS i

U.S. Nuclear Regulatory Commission Washington, D..C.

20555 License No. SNM-1227 Docket No. 70-1257 4

Dear Mr. Crow:

Exxon Nuclear Company, Inc. hereby requests a release of areas previously used for mixed oxide fuel fabrication from plutonium status.

A report of our decontamination efforts and -the findings of our final survey is enclosed for your review, and supports our request.

It is our understanding from discussions with members of your staf f and with Region V that it is probable that you will choose to per form a - con firmatory ' survey. It is our further understanding that. experience with confirmatory surveys in the past has been that further clean up effort has been required.

In light of your experience and the fact that we have definitive plans for use of the area to be released, it is requested that you act upon this request by the end of January.

As you know from previous correspondence, it is planned to install an incinerator in the ' space being' released.

There is rome preparatory work

~

required in that location prior to incinerator. equipment installation, which cannot proceed until a release is obtained as'it would restrict your capability to conduct a confirmatory survey. The above mentioned schedule

~

was discussed with George B_idinger of your staf f and B. L. Brock of Region V when they visited our plant in early November.

Any improvenent in that schedule would be ap

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J. B. Martin - Region V PDR ADOCK 07001257 i

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PLUTONIUM RELEASE SURVEY INTRODUCTION / CONCLUSION During the early 1970's several mixed oxide fuel elements were manufactured in Room 173 of the Specialty Fuels Building at Exxon Nuclear's Richland facility.

This operation was discontinued in 1975 and the mixed oxide equipment was placed in standby.

In 1985 the equipment was cleaned o f gross quantities of mixed oxide and removed for disposal. The plutonium from the equipment decontamination has been contained in 55 gallon drums stored in the vault.

This allows the vault to be maintained as a noncontaminated radio-active materials area. These drums have been stored on the second floor of the vault, segregated from other miscellaneous storage on the first floor.

The containment of plutonium will be monitored by continuous sampling o f the room air and periodic inspection and survey.

Following equipment removal the i

rooms were surveyed and decontaminated as necessary. Very little decontamina-tion was required.

It is planned to utilize the space for uranium operations in the near future. To that end it was felt prudent to decommission the 4

facility as a plutonium facility.

I A decommissioning survey plan was formulated and a copy transmitted to the NRC by the letter, C. W.

Malody to W.

T.

Crow dated October 8, 1985.

As stated in that letter a survey report was to be filed with the NRC to obtain a release from the restrictions associated with having plutonium contamina-tion in the facility. This is that report and confirms that all potentially plutonium contaminated areas except the storage vault (Room 157) have been surveyed and found to be below the contamination release limits for plutonium (stated in annex C of our License No. SNM-1227).

In addition to area surveys, the drain, ventilation and vacuum systems have been surveyed and found to be below the release limits for plutonium.

All areas have been l

cleaned of plutonium contamination to levels as low as reasonably achievable.

7. ;;

s

.-Q SURVEY r

The layout and dimensions of the effected rooms and ser rice systems are shown by Figure 1, 2, 3, 4 and 5 ot, Attachment 4.

Figure 2 illustrates the positioning of the rooms within the Speciality Fuels Building (Figure 1).

Plutonium was normally stored in shipping containers in Room 157.

The containers were either opened in Room 157 or Room 173.

Plutonium packages ualoaded in Room 157 were surveyed and confirmed free of contamination before the transfer to Room 173; thus Room 155, 156 and 157 and the airlock were never known to have seen plutonium contamination. Packages were surveyed and cleaned prior to leaving Room 173,' The same procedural guidelines discussed inithe decommissioning plan as apply'ing to Room 173 were also used to survey 155, 156 and the airlock.

fAoomst This survey report provides a summary of the data taken and usually does not report the exact measurement of each smear or direct survey. All data on the survey reports is per 100Lsquare cm. unless otherwise noted.

The smear aurveys were often taken over a much larger area such as ten square feet of floor or wall during the wipe dohn of the surfaces.

If any contamination was detected a detailed followup survey was done to verify that none of the area exceeded the limits.

Alpha surveys were normally performed with a portable low background personnel survey instrument. When contamination was detected, a more sensitive Ludlun type counter was used to determine the amount of contamination present.

A surface barrier detector (lab counter) was used to dif ferentiate between plutonium and uranium. The ability of a surface barrier detector to dif fer-

'k entiate between plutonium and uranium is illustrated by attachment to several survey sheets.

There was a small overlap between the uranium and plutonium channels, however the observed count rates and apparent efficiency of detecting plutonium allowed the conclusion that no plutonium contamination above the limits were observed.during any of our surveys.

Uranium contamina-tion remains in several of the Room 173 support systems particularly the vacuum pump filter and the lower end of the drain system and retention tank.

Specific surveys of the systems have shown the amount of plutonium associated with the uranium contaminated systems is below plutonium release limits.

For completeness a beta / gamma survey of the ef fected roous and systems was performed.

A beta gamma survey may detect Pu-241 and Am-241 normally associated with plutonium.

It can detect possible accumulations of uranium which may have plutonium associated with it.

The surveys show that there were no detectable " hot spots" of beta / gamma radiation remaining in the rooms.

DATA The surveys were performed using the instrumentation described in Attachment 1.

The portable instruments,PAM and ECM (alpha and beta / gamma respectively),

are calibrated semi-annually and checked for operation prior to each use. The laboratory type instruments, Ludlum scalers and lab counter,are checked each working day for proper calibration.

The methodology used to perform the surveys is provided by Attachment 2.

The survey plan listed five types of surfaces that required survey; they were:

1)

Floor, walls, ceiling surfaces (including under painted surfaces) the lights and roof supports.

2)

The service piping remaining in the room.

3)

The floor drain and HPT shower drain system.

4)

The exhaust system.

5)

The vacuum system.

Though some of the surveys overlapped, in that more than just one type of surface was covered in a single report, for convenience the survey reports have been grouped into the five divisions listed above. The survey reports for each at the five types of surfaces are provided in Attachment 3.

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Attachmr.nt I t

Survey Instruments i

1.

Portable alpha meter (PAM) - Ludium Model 12 using an air proportional probe with counting are: cf 60 cm2 and an efficiency of 13% 4 pi for Pu-239.

2.

Ludium Scaler (alpha scintillation) - Ludium Model 1000 with alpha i

scintillation probe Model 43-1, counting area of 75 cm2 and an e f fi-ciency of 30% 4 pi for Pu-239.

j 3.

Lab Counter - Counter uses surface barrier detector with two single I

channel analyzers to identify alphas from uranium and plutonium separ-ately. Detector has a counting area 10.7 cm2 and efficiency of 30% 4 pi for Pu-239.

I i

'4.

GM Survey Meter (EGM) - Eberline Model E-140 with HP-260 pancake probe.

Counting area of 15.5 cm2 and efficiency of 30% 2 pi for Tc-99.

i 5.

Ludlum Scaler (beta / gamma GM) - Ludium Model 1000 with HP-210T hand I

probe. Counting area'of 15.5 cm2 and ef ficiency of 30% 2 pi for Tc-99.

6.

Ludlum Scaler (beta / gamma CM)

-Ludium Model 1000 with HP-190A hand

. probe ~with counting area of 6.6 cm2 and ef ficiency of 7.7% 4 pi for i'

Pu-239.

i l

I r

I I

l L

'r P

b

Correction Factors for Detectors Used Direct Survey for Alpha Alpha in d/m = size factor X efficiency factor X (c/m - background in c/m) 1.67 X

7.46 X (c/m - background in c/m) 1.PAM

=

1.33 X

3.33 X (c/m - background in c/m)

2. Scaler

=

Smear Survey for Alpha Alpha in d/m = efficiency X (counts per minute - background in c/m) 3.33 X (counts per minute - background in c/m)

Scaler

=

l Direct Survey Beta Gamma 1 mrad /hr

= 3600 c/m for HP-260 or HP-210T hand probes 0.2 mrad /hr'= 720.c/m Total c/m

= 3.33 efficiency factor (2 pi) X (observed c/m - be.ckground in c/m) l

Survey Methodology Surveys for alpha contamination were started with a direct survey using a PAM. If contamination above background was found, a direct survey using a Ludium Scaler was made to determine more exact levels of contacination present. Smear surveys for alpha were first counted on the Ludlum Scaler, positive smears were then counted on the Lab Counter to determine which contamination was present, plutonium or uranium. Alpha contamination above release limits was cleaned to less than limits.

In. tight locations where a normal survey probe could not be used for a direct survey, an HP-190A hand probe was used with a Ludium Scaler to determine if any contamination above background was present. Contaminated areas were cleaned to background levels.

About 25.0% of floor areas had a direct survey made using a Ludlum Scaler for final release'of fixed contamination.

Paint samples were. obtained by sof tening the paint with acetone. The paine was then scraped up with a putty knife and. dried under a heat lamp.

After drying, the chips were ground with mortar and pastel and the grit counted by

~

the Ludlum Scaler.

If alpha was detected the-lab counter was used to determine the fraction'that was plutonium.

Survey for fixed radiation levels from beta gamma emitters-was made-using an EGM with HP-260 hand probe; in tight locations, a Ludlum Scaler with HP-190A was used.. A' Ludlum Scaler with HP-210T hand probe was used to check out any locations found above background and to check about 25 locations on the floor in Room 173.

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,--.a Index 1)

Floors walls, ceiling surfaces (including under painted surfaces), the lights and roof supports.

Survey Log No. F-53 F-58 043 045 048 2)

The service piping remaining in the room.

Survey Log No. F-48 F-57 3)

The floor drain and HPT shower drain.

Survey Log No. F-54 F-56 044 4)

The exhaust system.

Survey Log No. 36-37 046 047 5)

The vacuum system.

Survey Log No. F-49 l

1)

Survey of floors walls, ceiling surfaces (including under painted surfaces), the lights and roof supports.

Survey Log No. F-53 F-58 043 045 048 l

l

E(UN NUCLEAR a^o' ATION PHOTECTION RECOROS COMPANY, INC.

RADIATION SURVEY REPORT S LOG.

LOCATION TIME DATE SU R V E Y LOG NO.

SF Fab 0700 1530 8/29/85 F-53 TO

' 5C " * " " ' " "

Release of Fab. Room ITEM OR LOCATION METE R DE F L.

SOURCE B TA GAWA NEUMON NU WW Na DIST*

c/m orgk/rp og)

MEASUREMENT.

WO WC SIZE mrads/h r.

m R /h r.

mrem /h r.

1 Complete direct survey of' Fab. Room floor

<100 2

Complete smear survey c f Fab. Room

'loor

<20 3

Smear of wall surfaces

<20

~

4 Survey of rafters, duc1. work, beams A ligh ' fixttires

<100

<20 5

Survey of lower oices i round walls, smears & direct

<100

<20 6

Hot spot on floor next to west wall, readi an down from 1.000 counts to 200 cot nts. Fore decon nee ded 7

Hnt sont aftpr cleaninc

-100

<70 SURVEY INSTRUMENT (S) USED - 1.D.NUM8ER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED 17521.06 C PILTER PAM c.p.

snoopy SUPPUED AIR X NONE i

EGM t.AB CoVNTER.22550. 3arsER PERSONNEL DOSE R ATES PHASE OP WOR K N O.

WHOLE 80DY PEN.

WHOLE BOOY SKIN E XTRE ME TIES mecm/hr.

mrem /hr.

mecm/hr.

?

k I

  • ""*"TS Released F3b. Room i

ACTION TAKEN l

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max. UNCORRECTED MEASUREMENT MAX. CORRECTED OOSE R ATE SigPtATV E

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X N-N F= FOG,888

ERON NUCLEAR RADI ATION PROTECTION RECOROS COM PANY, INC.

RADIATION SURVEY REPORT e L OG.

LOCATION TIME DATE SvRvE v LOG NO.

5.F.

173

_0700 1530 10-1 thru 10-9-05 F-58 TO

  • ** Survey fifteen locations on the floor and four locations on thewalls.

D' 5C " '"' "

Removed paint from these special locations and counted paint dust or chips.

See attached map and survey results.

a i

ITEM OR LOCATION ME TE R OE F L.

SOURCE SETA GAWA W RON MU WDR N O.

DIST*

ME ASUR E ME NT WO WC

. SIZE mrose/h r.

m Rme.

mesmm e. c/m orgef m ory i

1.

Fifteen floor location!

orior to pa Int rem) val 100*

20*

2. Fifteen floor locationt after paint remova l 100*

20*

3. Four wall locations or-or to Daint emoval 100*

20*

4.

Four wall locations after cai nt removal 100*

20*

5.

survey of oaint sanded from walls and sand 3acer used 20*

6.

survey of oaint remove <

from floor.--see attached surs ev.

2 7

survey of flo'or location l? a seconlf time 600 cm of oaint removed 50(l' L

I SWRVEY INSTRUMENTIS) USEO - 1.D.NUMSER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED i e a30.37THER" aOeus.000 Su ~ o

^'a O PT'a Q ~o~e PAM C.P.

EGu LAs COUNTER PE RSONNEL DOSE R ATES PMASE OF WORK Ng WNOLE SODY PEN.

WHOLE 300Y SKIN E XT RE ME TIES mecm/hr.

meem/nr.

mecm me, i

i i

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r l

C o""* "75 Pa:nt removed from the floor was soften with acetone ar,d scracted up with a putty knife. Paint was then dryed and ground using a mortar and pestle into a fine

[

powder for countino. Countina was done by snreadino oowder out over an area of about 2

200 cm and count nade usino scaler with scintillation orobe. Two counts were made of cowder than Dowder was stirred un and then recounted. Due to cositive count on j

ACTION TAKEN -

samole location 13. oowder was counted usino air samole counter to determine amount of Pu or U present. Paint from walls was already in powder form due to removal by

__sandino. so countino was carried out the same as floor oaint after orindino.

Found no indication of olutonium contamination Dresent at levels above release limit sj (1) 10 d/m of Pu and 40 d/m of U found in paint removed from and area of 600 cm2 i

M AX. UNCORRECTED ME ASUREMENT MA A. CORR ECTED OOSE R ATE Se W T RE

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l AMh VW N t

x N.N F.7 00,333

[ con,

/73 0 f

O" rion-B7 Lcenh:

I!L' W - 1%H 3

Lce&cns W

21 e2 1% aw af gre a

l$

B 6.h.

p tyalle

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SUMMARY

OF FLOOR SURVEYS FOR PLUT0NIUM CONTAMINATION IN R00ft 173 2

Contamination Levels (100 cm )

Count of Paint Removed Location (1)

Direct D/M Smears D/M (2) from Floor D/f1 1.

100*

20*

20*

2.

100*

20*

20*

i 3.

100*

20*

20*

4.

100*

20*

20*

l 5.

100*

20*

20*

6.

100*

20*

20*

7.

100*

20*

20*

l 8.

100*

20*

20*

i 9.

100*

20*

20*

10.

100*

20*

20*

11.

100*

20*.

20*

12.

1 00*

20*

20*

i 13.

100*

20*

60 (3) 14.

100*

20*

20*

I 15.

100*

20*

20*

W-1 1 00*

20*

20*

W-2 100*-

20*

20*

3 W-3 100*

20*

20*

i W-4 100*

20*

20*

(1) Refer to map of room for location of survey (2) Surve'y prior to removal of paint sample

+

(3) Survey made.using air sample counter showed 6.7 d/m of Pu, and 52.2 d/m of U.

less than value 1

3

E:RON NUCLEAR a^o'^o* *aoTectio~ ascoaos COMPANY. INC.

RADIATION SURVEY REPORT f

eLoc.

LOCATION TIME DATE suRvE loo

~O.

lano 11-15-85 045 S.F.

Airlock 1000 TO

'5*"'"'

Survey of hallway (airlock) for final release. All areas surveyed are 100 cn, numbers in parentheses are number of surveys made for that item.

ITEM OR LOCATION METE R OE F L.

SOURCE SETA GAMMA e TRON WEU SW ARE N O.

DIST*

M E ASUR E ME N T WO WC SIZE menanMF.

m R /h r.

mesm/h r. umo,{fgkfm opfy

1. Ceiling (25) 0.2*

100*

20*

2. Walls (50) 0.2*

100*

20*

3. Floor (40) 0.2*

100*

20*

4. Ducts (20) 0.2*

100*

20*

5. Electrical conduit (10) 0.2*

100*

20*

6.

Exit signs, howler, fi e alarm box, P.A. specker 0.2*

100*

20*

7.

light fixtures (8) 0.2*

100*

20*

8. doors (20) 0.2*

100*

20*

SURVEY INSTRUMENT (5) USEO - I.D. NUMBER (PIN OH SERIAU RESP RATORY PROTECTION REQUIRED

[

- PAM C.P.

SNOOP %

O sWPPLiEO O rfa G ~o~5 Asa

\\

scu 17 520. 00 LA8 COUNTERJO /03. 00erseR i/550.33 PE RSONNE L OCSE R ATES PMASE OF WOR K N O.

MOLE SODY PEN.

WNOLE SODY SKIN E XTRE ME TIES FTWC m/hr.

mPCm/hF.

mrtmihr, l

i l

C MuENTs Found no detectable plutonium contamination above release limits.

ACTION TAstEN 1

l

.~~m M AX. WNCOR R E CTE D ME ASU RE ME N T MA A. CORRECTED DOSE R ATE 58ptf R E

-- ' Y" M M de 't -

,,.. ~,..

4 4

a^o'*Tio~ aaoTEctioN aEcoaos ERON NUCLEAR COM P ANY, INC.

RADIATION SURVEY REPORT i

3L OG.

LOCATION TIME DATE SunvEY LOG NO.

1000 11-19-85 048 S.F.

Room 173 0700 TO Survey of room 173 walls (up 6') and floor for Beta Ga"ria fixed

'5""'"' " ' " '

radiation levels. Floor survey included 15 spots where paint had been removed for samplino.

OlaECTI SMEAa$

iTEu On LOCATION uE TE a oE F L.

sOuacE eETA GAwwA

  • sutach

,,37, uEAsumEwENT wO we size

-, e,.

- a <=,.

-,.m/n,. u - o,.,,.., -..., -

1. Walls (80) 0.2*

2.

Floor (100)

O 2*

~4 track < t non-< in (?M finne 0 7*

4 suavEY INSTnUMENTts) USED - 1.D. NUMBER (PIN OR SERIAU nESPtaATOaY PaOTEcTION nEQUlnED Q ~o~E PAM C.P.

SNOOPY O =uraEo ^ia

"'rEa I/DDU dI EGu i / 520. bo..

L.As COUNTER OTHER g

I PE RSONNEL DOSE a ATES PM ASE OP WO a K No.

WHOLE BODY PEN.

WMOLE EODY SKih E XT aE ME TIE S

== men,.

.= mi n,.

-,.-f=,.

s'

)

Found no detectable contamination above release limits. Scaler used had o ""' "'8 l

HP-210T survey probe, EGM had HP-260 survey probe. Nunbers in parentheses is for number of locations surveved.

l l

i ACTION TAKEN l

I-I

( h W et V t

" Y&#2 N" U

(/

uAm. v=comatcTEO wE AsunEut=T

=Ax. comaEcTEo oosE a ATE W'waE e

A~.~,..oo.. 3

2)

Survey of service piping remaining in the room.

Survey Log No. F-48 F-57 s

I i

E$N NUCLEAR RADlATION FROTECTION RECORD 3 COMPANY,lNC.

RADIATION SURVEY REPORT B L OG.

LOCATION TIME DATE SURVEY LOG NO.

SF Fab.

0900 1400 8/22/85 F-48 yo

' 8 C " '"' "'*

Survey of vacuum system piping in Fab. Room and K6-5-5A sampler in NAF. Also survey of duct work from K6-5-5A filter bank leading to final filter bank.

ITEM OR LOCATION METE R DE P L.

SOURCE 8 A GA MA EUTRON WW-MAM DIST*

MEASUREMENT WO Wc S82E mrede/hr.

m Rih r.

m ecm/h r. c/m oQl/m ed) 1 Smears of interior of r ice in Room L73

<20 (total of 10 locations' 2

Direct survey at nipe c peninas

< 100 3

Survey of downstream si de of K6-5-5A samolar

<200 150 4

Survey of vacuum line ( ft. downstream of (6-5-5/, sampler

< 100

<20 5

Survey of both K6-5-5A ducts leading to fi lal fil ter bank

< 100

<20 6

Smpars of interior of t rocess water instru rant ai r and

<100

<?O nitrocen lines (also di rect e r noen-nasi SURVEY INSTRUMENT (S) USED - 1.D. NUMBER (PtN OR SERIAU RESPIRATORY PROTECTION REQUIRED 17521.06 O *i'Taa PAM C.P.

SNOOPY SUPPU E D AIR x

~O~c EGM LAB COUNTER 17550. 3 brHER WU.4 W PERSONNEL DOSE R ATES PH ASE O F WO R K N o, WHOLE 800Y PEN.

WHOLE 80DY SKIN E XT R E ME TIES mecm/hr.

mrcm/hr.

mecm/hr.

l l

C " "'"'8 Smears of vacuum system pioino checked on air samole counter for presence l

of Pu, found no detectable Pu contamination on smears #1 and ed.

K6-5-5A samnle l

line holder rotameter and 6 ft. of niop removed for horial.

l l

ACTION TAKEN l

l Vacuum system line - checked at 12 locations Nitrogen system line - checked at 6 locations i

l Instrument air - checked at 8 locations Process water - checked at 5 locations

. gn u d ; e-7 e;.

E M.x. UNCOR REcTE ME.SUR EMENT M.x.coRREcTE. o mE R.TE m.~ P.Poo....

E(ON NUCLEAR a*0'^Tica 'aOTEcTiON aEcDaOS COM PANY, INC.

RADIATION SURVEY REPORT BLOG.

L OCA TION TIME DATE SURVEY LOG NO.

S. F.

173 0730 1400 10-1-85 F-57 TO

' 5 C " '"' ' ' ' " "

Survey of electrical outlets, electrical covers, chones (2), and covers for phone lines. Also electrical panel, electrical box, motion detector box, alarm box at entrance to room, fire extinquisher and fire alarm box. Exit siens.

ITEM OR LOCATION ME TE R OE F L.

SOURCE BETA GAMMA NEUTRON OtRECT_ SMEARS N O.

DIST*

ME AsuREMENT WO WC SIZE m,ade/h,.

mR/n m,cm/n e, cfmo{af tjm oQ)

1. electrical outlets (12:

covers removed 100*

20*

2. electrical covers (4) c overs removed 100*

20*

3. ohones (2). ohone line covers and conduit. rovert re nvr d 100*

?O*

4 electrical canel cin*3r203.11 and electric il hnx nine3? ?03.1 ?

100*

?n*

5.

electrical conduit com-no throunh south wa ll(snoi hwest corneri 100*

?O*

6. motion detector box.ala rm box at room ente ince & el ec tr icalwirino 100*

20*

7.

fire ov+innoic har and i'iro al a m hn, alen ovit tinne lon*

?n*

(L)

Inn *

?q*

0

  1. 1nnr cane scr ria m n ar e en enri r e.,12-4nn eton ey
9. Magnehelic panel on wett wall 100*

20*

10. P. A. Speaker and Klaxar. horn Also Pire al arm and temo, control

'.90*

20*

11. floor crains (3) 100*

20*

SURVEY INSTRUMENTIS) USEO - 1.D. NUMBER (PIN OR SERIAU RESPtRATORY PROTECTION REQUIREO 7521. M O PTaa 8 ~O~5 PAM c.P 0 su''' O i/dbO.3$oorvgen de/us.uu

^'a EGu LAB COUNTER PE RSONNE L OOSE R ATES PH ASE OP WO R K N O.

WHOLE SCOY PEN.

WMOLE SCOY SKIN E XTRE ME TIE S m.mn.

,,,m men,.

momen,.

C

""*"75 Surveyed each item throughly by removino all access covers, and surveyed all accessible areas of item.Found no detectable contamination above release limits.

indicates a less than value i

ACTION TAKEN e

M Ax. UNcORREcTE O ME ASUREMENT MAA. CORRECTED OOSe RATE vRE XN-NF.FOO 888 L.

0 3)

Survey of floor drain and HPT shower drain.

Survey Log No. F-54 F-56 044 F

y.

f l

l

E%HN NUCLEAR

. RADIATION SURVEY REPORT RADI ANN PHOTEC N RECORDS COM PANY, INC.

S L OG.

LOCA TION TIME DATE SURVEY LOG NO.

1030 9/3/85 F-54 SF 173 1000 TO Survey of floor drains in Room 173 (2)

ITEM OR LOCATION METE R OE F L.

SOURCE SETA GAMMA MEUTRON DIRECT SMEARL N4 OlST*

MEASUREMENT WO WC SIZE rnredeth r.

m R /h r.

mecm/h r. c/m o(d/$k/m os(5/jl 1

Floor drain

<20

<20 2

Floor drain (beta & camma)

<10c/m SURVEY INSTRUMENT (S) USEO - f.D. NUM8ER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED O PI'vea 1/ bb0. 3. SNOOPY PAM C.P.

a ~oac SUPPLIE D AIR brHER EGM LAS COUNTER PE RSONNEL OOSE R ATES PH ASE O P WO RIC N O.

WHOLE 80DY PEN.

WHOLE SODY SKIN EXTREMETIES mecm/hr.

mrtm/hr.

mecm/hr.

C ""'"T8 Frund no detectable contamination.

t ACTION f.tKEN l

i j

1

  • t -

e-

^

f l

l MmX. UNCORRECTED MEASUREMENT YAX. CORR ECTED DOSE R ATE SIGMAT,U a E (dow t c-

. T 60 (5r x N.N P.F oo,asa

ERCN NUCLEAR RADI ATION P740TECTION RECOROS COM PANY, INC.

RADIATION SURVEY REPORT S LOG.

LOCATION TIME DA TE SURVEY LOG NO.

SF HPT Office 0800 OR20 9/11/85 F-56 i

TO

C"'' " ' "

  • Survey of drain in shower i

ITEM OR LOCATION METE R DE P L.

SOURCE 8 ETA GAMMA NEUTRON DIRECT SMEARS N O.

DIST*

MEASUREMENT WO WC SIZE meadwh r.

mR/hr.

mrem /hr. c/m ogE/m o@l i 1

Drain cover (both side s)

< 100

<20 2

Smear of drain down tc water level

<25 l

3 Smear of drain from tco down into water

<25 4

Readina directly over drain Joeninu

< 20c/m (B&G 5

Readina directly over drain 3Deninu

< 100 6

Shower floor

<100

<20 l

r t

SURVEY, INSTRUMENT (S) USED - 1.D. NUM8ER (PIN OR SERIAU RESPIRATORY PROTECTION REC.UIRED AIR PILTEa O ~o~e 1/DdU 0I LAS COUNTER 1/ dd0.347sen scaier 367C 3C SUPPLIED PAM C.P.

SNOOPY EGM PE RSONNEL DOSE RATES PMASE OP WORK N O.

WHOLE BODY PEN.

WHOLE BODY SKIN EXTREMETIES mesm/hr.

mecm/ hr.

mrcm/hr.

l l

Smear (#2) of drain showed Pu = 0 c/m U= 4 c/m, smear (#3) of drain into C " "* " 7 5 i

water after dryino Pu = 0 c/m U=4 c/m. ' Cover smear was Pu = 0 c/m U=2 c/m.

Smear of shower floor Pu=0 c/m U= 1 c/m.

l l

l ACTION TAKEN

{

l

$wh3dTe.1M [ b~.w RE M AX. UNCORRECTED ME ASUREMENT MAX. CORR ECTED DOSE R ATE r

X N-N F.FOQ,884

ERON NUCLEAR R^o'*T'o* coovactio~ ascoaos COM P ANY, I A'C.

RADIATION SURVEY REPORT 1

(

s L OG.

LOCATION Ts uf DATE sumvEv LOG NO.

1 S.F.

outside 1300 1400 11-14-85 044 10 Survey of cleanout locations on drain line from S.F. building to oEScRiniCN On m 2

retention tank system. Smears taken were for an area 100 en or larcer, direct sur-vey was made by lowering probe into pipe while turning probe 360 degrees.

ITEM Om LOCATION ME TE R DE FL-SOURCE SETA GAMMA NEUTRON DIRECT SMEARS DIST-wEAsumEutNT wo we Size me

.m,.

m Ren,.

-,. +,.

u m o,o,-c,m o, aim

1. see attached sheet for survey resul ;s.

SURVEY INSTRUMENT (S) USED - 1.D. NUMSER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED PAM - - - - --

C.P. -

SueRtiEo Aia O Tsa JNTEN# "

  • 00suooey ----

^^'^^

v ~o~c

\\

Ecu ' ' "

tes (

OTHER PE RSONNEL DOSE R ATES PM ASE O F WO R K N O.

MOLE BODY PEN.

WHOLE 500v SKIN E XT R E ME TIES

===<n,.

mo me n,.

-,em en,.

cowuENr5 l

l ACTION TAKEN I

l

~

I wAm. v~coRREcTEo uE ASumEuENr uAx. coRREcTEo oOSe R ATE gasArpa E p

y-

-y J M iL%i d er g# eQ 4 0 $

x N.N.,oo.a.

,~

Survey

  • 044 Date 11-14-85 SURVEY OF CLEAN 0UT ACCESS POINTS ON RETENTION SYSTEM DRAIN LINE FROM S.F. BUILDING Location GM survey Smear survey Pu U (c/m)

- 1.

Just south of S.F. building (3')

100*c/m 0

6 2.

Just south of Building # 7 (15')

1500 c/m 2

88 3.

Just west of retention tank (10')

100*c/m 0

0 4.

Pipe in retention tank 100*c/m 0

2 5.

Sludge from pipe 0

13 Survey of cleanout number one was all the way down to elbow, about 3' Survey of cleanout number two was down to elbow at about 6', maximum gm reading was found 5

at about 3' level were drain from laundry facility ties in to line. Survey of cleanout number 3 was down to about 6', this was not bottom of pipe.

Survey with gm survey probe was made by letting probe hang by cable and lowering into pipe. I was unable to control accurately how close probe was to the side or bottom of the pipe, pipes were about 4" in diameter.

(

Source check of air sample counter used to check smears showed the following results:

Source Counts in Pu Channel Counts in U Channel 1.

Pu 239 (5-1199) 1810 d/m 4 pi 535 97 2.

U 238 (S-477) 680 d/m 4 pi 2

120

===3.

Background===

-0 0

Due to results of smears taken does not appear that any significant Pu contamination is present in drain lines.

  • indicates a less than value I

1 4)

Survey of the exhaust system.

Survey Log No. 36 1

37 046 047 I

i 1

i i

f b

n s

i I

i

+

I.

t

?

k i

i f

I

+

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I

t E$EN NUCLEAR RADI ATION PROTECHON MCOT;DS COM PANY, INC.

RADIATION SURVEY REPORT

/'

S L OO.

LOCATION TIME DATE SURVE Y LOG NO.

11 30 9-28-85 36 S. F.

Equipment Rm.

10 00 TO EsCRirnON O m e Survey filter box prior to vacuum cump in vacuum system. Inter.'ir of box cleaned of visible rust and dirt in front of filter, so direct survey could be made with lab counter.

ITEM OR LOCATION METE R DE PL.

SOURCE BETA GAMMA EUTROh DIR E CL SMEARi_

i N O.

DIST*

I MEASUREMENT WO WC SIZE mrade/h r.

rnR/h r.

mecm/hr. s/m os(a/5L/m o(d/@

Cleaned area on floor of fil ter boa 5" by 5" 9678 62 (l!

),

100*

100*

2.

survey of area after c losing up fi' ter bn e

3. survey of personnel 100*

100*

SURVEY INSTRUMENT 153 USED - 1.D. NUMSER (PIN OR SERIAU RESPtRATORY PROTECTION REOutRED 17521.07 PAM C.P.

Sh.00PY suretlEO AIR @ FILTER C-NONE EGM LAS COUNTER 36/03.0 rNER I/bbu.33 PE RSONNEL DOSE R ATES PH ASE OF WO R K N O.

WNOLE BODY PEN.

WHOLE SODY SKIN E X T R E ME TIES rRetm/hr.

mrtm/hr.

mrtm/hr.

C""'"

(1) See attached sheet for breakdown of surveys made usino Lab counter with surface barrier detector to help determine if any sianificant olutonium contamination is cresent.

ACTION TAKEN I

MAX. UNCORRECTED ME ASUREMENT max. CORRECTE D DOSE R ATE Sir RE

. LM I & 4%

A N.N F.F QQ,888 l

Survey # 36 Date 9-28-85 All count results are for 1 minute Item Surveyed Results in Pu Channel in U Channel 1.

Background check 0 c/m 0 c/m 2.

Uranium source #S-477 (680 dpm 4pi) 15 c/m 118 c/m 3.

Plutonium source #S-1199 (1810 dpm 4pi) 698 c/m 43 c/m 4.

Floor of filter box (1st of 3 areas checked) 35 c/m 313 c/m 5.

Floor of filter box (2nd area) 18 c/m 279 c/m 6.

Floor of filter box (3rd area) 30 c/m 365 c/m 7.

Background check 0 c/m 0 c/m 8.

Uranium source #S-477 13 c/m 120 c/m 9.

Platonium source #S-1199 705 c/m 52 c/m 2

I

10. Smear of filter box (100 cm area) 1 c/m 6 c/m 4

Assuming the ratio of counts between channels from a uranium source were consistent, for every count in uranium channel a 0.117 of a count would show up in plutonium.cha-

~

""'I' Results in Pu Channel expected Survey # 4 above 36 counts / minute Survey # 5 above 33 counts / minute Survey # 6 above 42 counts / minute It appears that if plutonium is present as a fixed contamination it is at very low levels. I would expect that this filter housing will be buried as contaminated waste when it is no longer used, so item may not need unconditional release for plutonium, i

L

_.m.

.___m 5 %v.% wy.*.% w. m trw...___-.-_

a^oi ATio" 'aoTECTioa aEcoaoS E ON NUCLEAR RADIATION SURVEY REPORT COMPANY,INC.

DATE SURVEY LOG NO.

SL OG.

LOCATION TIME

[

1:30 9-28-85 37 i

S.F.

Equipment Rr 1:00 70 Survey of K-5 recirculation system, and K-6 exhaust system.

      • C"" " ' *
  • t ME TE R DE s t-SOURCE eETA GAMMA wEuTROM ME WE AM g

ME ASUR E MENT WC WC SIZE meede/h r.

enRMr.

mesmAr. um os(d/erum or h/m )

tTEM OR LOCATION DisT*

100*

20*

1. Final filter for K-5

/

2. Floor of filter bank in front of" fir al filter (K-5) 100*

20*

3. Walls of filter bank in front of fir al filter (K-5) 100*

20*

4. Floor of filter bank in back of fina l filter (K-5) 100*

20*

5. Walls of filter bank in back af fina l filtor (k-5) 100*

20*

j 100*

20*

6. Fan downstream of final filte bank (K-5) 700

?n*

4 5

7. nuet leading fenm YA 9-Rh tn 7 A fir al fili ar R. Ernaar nf filtor at nnine nf vit E Rh rii eharna intn fina l filter hanie 70'i-
9. floor of final filter bank in front of fili;er (k-6) 2000 21 0 l
10. walls of final filter bank in front of fili;er (K-6) 51 0 100 s

i 11.

SURVEY INSTRUMENTtS) USED - 1.D.NUMSER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED I

O PT==

0 ~oan

  • 00 Q SUPPLIED Asa m u3.0%,PY,scaser 17471 07 C.P.

/

PAM sou i.AscouNTuR

(

PE RSONNEL DOSE R ATES w OLE sODY PEN.

WHOLE BODY SKIN E XTRE METIES NO.

PMASE OF WORE mmme.

-mne.

mesmnt.

l 1

4 t

  • indicates a less than value. See attached sheet for breakdown of survey C MMENTS results.

G ACTION TAKEN i

l 1

i

(

l F

MAX UNCORRECTED ME ASUREMENT MAM. CORR ECTED DOSE R ATE 5

A URE IM W1 a

  • x N.N r.,oa, I

Survey # 37 Date 9-28-85 All count results are for 1 minute Results in Pu channel in U channel Item Surveyed I c/m 18 c/m

1. smear of floor in K-6 filter bank I c/m 3 c/m
2. smear of walls in K-6 filter bank
3. smear of filters upstream side (K-6)

O c/m 12 c/m 0 c/m 0 c/m

4. smear of K-6-5-5b duct
5. smear of filter directly downstream of 0 c/m 7 c/m K6-5-Sb duct
6. direct reading on K6-5-5b duct (2 inches up in 33 c/m I c/m duct from filter bank) 0 c/m 0 c/m
7. background check 8 c/m 130 c/m
8. Uranium source check #S-477 719 c/m 31 c/m
9. Plutonium source check #S-1199
10. Large area smears of K-5 in front and behind 0 c/m 0 c/m filter, including fan Found no indication K6-5-5b duct or K-6 filter bank is contaminated with lev of plutonium contamination above releaseable limits.Found no detectable contami-nation above release limits when surveying X-5 recirculation system.

l i

l I

i I

L

1 1

a^o'ario~ *aoTEcTicN aECoaos ERON NUCLEAR RADIATION SURVEY REPORT COMPANY INC.

f svRvEv LOG No.

DATE r

LOCATION rime ot oo.

1;nn 11-18-85 046

[

S.F.

Room 173 n700 TO Survey of exhaust ducts in floor of roon, this includes grill, filter

'5'"'"'

frames and filter housings. Survey results are for areas of 100 cm# and after clean-inc of items to rornove low levels of uranium contamination found on evhaust orills.

ME TE R DE F L-SOURCE SETA GAMMA NEUTRON Ot RECT SMEARS.

c/m o@ctfM o@l ITEM OR LOCATION ME ASUR EMENT WO WC SIZE meses%r.

m m/he.

mecm /h e.

100*

20*

1. Exhaust grills (8) 100*

20*

2. Filter frames (8) 100*

20*

3. Filter housings (8) 100*

20*

4. Main duct from filter housing s (4)
5. Beta and Gamma readings for a ll are is mentioned 0.2*

indicates a less than value RESPIRATORY PROTECTION RE QUIRED SURVEY INSTRUMENTIS) USED - 8.D. NUMBER (PIN OR SERIAU SNOOPY Osuaso^'a aia

" ~ov5 C.P.

PAM - -

L.AB COUNTEpd / Ud. 00aysen i / bdu. J.5 6 / m. oc, EGM PE RSONNE L DOSE R ATES l

WHOLE SODY PEN.

WHOLE BODY SKIN E XTRE METIES PM ASE QP WO R K No, l

FRftfM/ht, mft fM/ ht.

fMFCff* /M F.

{

l l

l i

Found no detectable plutonium contamination above release limits. Uranium C ""E"'S l

contanination found on exhaust orills was identified usino lab counter to check smears rather than scaler with scintilation ornho-I l

ACTIO N T A K E N M A A. UPeCOR RECTE D ME ASU RE MENT MAX. CORR ECTED QoSE M ATE 58ve*A RE A rt N F.F CQ,848 t

'l E$2N NUCLEAR RACIA N PRCTECTION RECOROS COMP ANY, INC.

RADIATION SURVEY REPORT OLOG.

LOCATION TIME DATE SURVEY LOG NO.

S.F.

Room 173 0800 1000 11-18-85 047 TO

'5*"**

' " ' Survey of insulation material covering supply air duct to room, also survey underneath of insulation rr.aterial on duct. Area surveyed was about 1 square foot in 4 diffrent locations. Survey results are for 100 cm' ITEM OR LOCATION ME TE R DE P L.

SOURCE BETA G AM ai4 A MEUTRON DIRECT _ISMEARS s o, o,,7*

ME ASUR E ME N T WO WC SIZE meed s/h r.

m R /h r.

mecm/h r. tim orQ),m orfem) 1.

insulation foil coverira duct (4) 0.2*

100*

20*

7. duct underneath of insu lation cover-na (4) 0.2*

100*

20*

7. enrvey nf wall nn west side o f room where metal envaring was enmcvnd (4) 0.2*

100*

20*

SuRvE Y INSTRUMENT (S) USED - 1.D. NUMBER (PIN OR SERIAU RESP!RATORY PROTECTION REQUIRED

(

PAMIWI M C.P.

ENOOPY-SUPPLIE D Ala O al'rea O No~e

(

EGMI/MU N LAB COUNTER 3e/v3.0g7sen i / m.aa l

PE RSONNEL DOSE R ATES PM ASE O F WO R K N O.

MOLE 500v PEN.

WMOLE SCOY SKth E XTRE ME T!ES mesm/hr.

meem/hr.

mrem /ne, I

l l

    • ""'*'5 Found no detectable plutonium contamination above release limits. The numbers in parentheses is for number of surveys made at each location.

ACTION TAKEN l

[s l

i M 4 A. UNCO R R E CT E D ME ASU R E M E N T MA A. CORRECTE D DOSE R ATE S*G RE

~

AD.

N bi_

x N.= >.s oa. ass

z rs

+

G4

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8

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e v

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4

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w

+ ~. -

w

,.m-_-

-r 7

m

,.--,y

5)

Survey of the vacuum system.

Survey Log No. F-49 i

f

6:%3N NUCLEAR RADI ATION PROTECTION RECOROS COM PANY, INC.

RADIATION SURVEY REPORT I-SLOG.

LOCATION Ts ME DATE SU R V E Y LOG N O.

SF Equip. Rm.

1000 1100 3/23/35 F-49 TO ESCRinion OP me Survey of vacuum system final filter bank, during changing of filter.

ITEM OR LOCATION METE R OE F L.

SOURCE BETA GAMMA NEUTRON DIRECT _

SMEARS N O.

ME ASUR E MENT WO WC SIZE mrede/h r.

m R/hr.

mecm/h r. c/m or@/Jbm ork j

1 Front of filter & filte r box 40,00C 25,00( I !

l i

2 After cleanina front of box 30.00C 80C i l

< ?O l

3 Rear of filter & rear c f filter box

< 100 4

Smear of front of filte r box checke<l for P ;

< 20 5

Personnel after work

< 100 6

Masks worn

< 100

< 20

< 20 7

Wnrk area

< 1,00 o

I SURVEY INSTRUMENT (S) USEO - 1.D. NUMBER (PIN OR SERIAU RESPIRATORY PROTECTION REQUIRED PAM I757I OS C.P.

$NOOPY O su'au'o

^'a G tea O NO~E EGM LAS COUNTER 1/bb0.3ersER 38/u3.00 PE RSONNEL OOSE R ATES PM ASE OF WO R K N O.

WHOLE SODY PEN.

WHOLE 800Y SKIN E XTR E ME TIES mecm/hr.

mecm/hr.

mrem /hr.

9 l

i i

b C MMENTS Filter removed for survey and burial smear indicated no Dresence of Pu.

Keith Johnson counted filter and found no indication of Pu cresent in filter.

i Filter buried in hnx 45.

i 9

9 i

^ * ' ' " '**'"

See attached sheet t

E I

[

[

MAX. UNCORRECTED MEASUREMENT MAX. CORRECTED OOSE R ATE ATURE s-a C

. L LT. 'l rNJ ' '

f xN.NF F00,888 f

i

o.

o

}

i i

SURVEY OF VACUUM SYSTEM FINAL FILTER BANK Pu (c/m)

U (c/m)

Smear of duct leading to filter box 7

347 Smear of front of filter box 4

85 (after wipe down of box)

Smear of back of filter box 0

2 Source check of' counter using Uranium source 6

142 11 115 7

126 6

116 10 112-Five minute source check using uranium source 36 570 a

.I s

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-- --- --

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