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DISCLAIMER

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

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UNCUSSIFIED MM SiyKUSS. Mac fiMttljgtt la seiaiiiiiM cimts M » «iftti»o%B^ % tite ma of

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12XSS SIMRJMI* laat aavatiaaea haa iifflicatai tinft* 4ua to tllM aailwa of c^Tfflii'wi aaA i ^ aof ^panAt* i t la Msa lapMrtaa^ to amlMta Idba jpoaathtl tfir

i a HHit*-fni to dlaaot ifflnifify«n |> aaaAlwpiit aaiffaoaa am wdtipA laaiolloalJiF ovair aa aiaa'of •BivaslMiiiiAaiyf IM aaaapo iatibta* flawms oc baat 'twf aaa^ "^ aim OMBA to dataaafeai jMaaftla ananam aataa *ftf to 4ilaBiiiteK Hbo aaMMi> fm^ aii<* tavfc of AMoalaBSaaliMi aartc aaoMHaBV* A vfipo aaapSa n ffyfua SaoM yoSaaiiai "I f?wt nal iT^% Ifflj- i a aaMaa of 500 4ttalatanai^UaH sar afantia vw %0 oBaam IBOIMMI is aafSfifiiaBt to aaoaism laaiiiSata ^^ff^fT^ ^ fiia aaai t laaar ujaHHlaa vi9t>aaa fuBiffttf tbat daocalaBlBatiaB la aasaaaKEy ta t tbat i t taor to iHMHfnlfli a 'tti

INaia ZZia a aaaaay of tba alea aaapla iata for i$m pmrioA aavavaA Dgr tbia msoBftm

UNCUSSIFIED «''('»

UNCUSSIFIED TABLE H

pamnuM WIFE aAHPUBs

Per Cent Above^ Area Huatoer of Wipes 500 D/VSS/kO B r

'!T Bttildlns 18,U03 h.5

laundry - Hot Side 262 10.3

BADIUM-ACTZHIUM ABBAS

Ihe renovea of the hood lines in B>1^1, B-IU3, and R-lkh vas ococoplsted in October. So cootaMnation prObleaB vere encountered with this vork. Th«t hood resoval resulted in tiie elisdnation act side corridors o& these roosos. Xbese corridors are now part of rooas B-lM) and B-1^2 vhich they adjoined. Ttm only rootBS in the building that notr have adjoining elej^haat hoods are B-l lji lR-lk$, B-133i B-131> and B~120. A new hood line is to be installed in B-ISCK d i s hood line v i U be used in the new ionitm program.

'BM dscontanlnation program in the cave area of tl« "dP" Building vas conclxtisd in Dsoeaber. This program vas of saveral month's duration. It is no Icmger necessary to vear plastic suits vlth fresh air lines bdbind the cava. ContaalnatiOQ levels have been reduced to the point ySoBve a 3per8Qa can nov vork in the area vlth the usual Isss-extrene hi|^«risk area protection. Mthougjh no more vork Is planned for this iirea., monitoirlng on a r e ^ e d seh^nle v i U be continued.

On October 5» 't s drive belt on the escbaust fan in the ' OP" filter bank broke. Air cootanination levels in area 1-A rose to a sli^tly hii^ber level. Bo other eontaalnation difficulties vere encountered.

Since -Uxe radium-actinium program vas concluded several aoothc ago, our health xhysles 3?rogram vas concentrated an ri^aing all areas of any radium, actinium, or thorium materials. During these past months, intense daoontaaination vork resulted in the eliminatioa of the contamination vhi<di remained from this program. During the tine the radium-actinium vork vas in progress, the active material vas very ades43,uately confined to the hiiilh«risk areas. Bowaver, because of the magiLtude of the task of denning the grossly oontamlnatad areas, it was inevitable that an ocoaslonBl spread of contamination resulted from the oleen t^ vork Itself. Such Inoidents vere vritten p In past reports.

In general, the monitoring results reported under "Coocentratlaa of Short-Liiied Daughter Products in Alr^ and "Concentration of Loog-Llved Isotopes In Air" Indicate that our program of "confinement and containment" plus sorupiitlous decontamination vork aalntained all vozking areas asfe. It has been perticvtlarly grat !:fying to note the reduction in air levels in the cave area.

UNCUSSIHED - e -

UNCUSSIHED Since there i s mt loogeo* any act ive material from th i s program i n the

"E** Building, (backgrouad counttUog resu l t s verify th i s ) ve sha l l no longer report a i r saavles toff t h i s material i n t h i s area. Since -Qat cave i s nov i s o l a t e and restricti id from entrance, ve Shall report only any s lgoi f ioant changes i n t h i s area. Boutine monltoriag v l l l be omtiaaed. Besults <a the monitoring v i U be rejported tinder another sect ion of t h i s report.

Besults of saagplirs col lected ami aioalyzed for shcurt-lived particulate da\JMihters are given in Table H I .

TABLE l U

COBCESTRATIOn OF ^QPT-LIVED DADGHTEB PRODUCTS IB AIB

Sampling Area

"B" Bl«g. - low-risk

Blgh-rlsk

"GP" B U g . - l-A-Lov-risk

1-A-HlE^-risk

Ho. (»f Saogfiles

89

92

156

IB7

309

61

Haadaum*!'

8.5

3S.I

59.3

5» .7

9i830.7

3,171.6

Ave:rage*

3.0

l^.k

3.3

16.3

1,397.2

1,630.2

<watlply All Values by 10"^ to dbtala ;JC/OC

TO measure eoneentratlon of long-lived isotopes in the air, saaitlas are colleoted much the sau as in polonium areas. Ultar xxqpera are aliba eeomtad at Isfcervals over a period of 20 -^ days, and a dlffenatlal daeay aaalyalii of the results i s made. !Qil8 gives a close estimate of the ooneeatration of radlm, actinium, or thorium In the air.

l ^ l a vr shows the results of such sasvles colleeted la Septaitoar, Oelieber, and l^pmSavr, 1955 •

Xl BLB IV

COBCBRTRATKH OF LDBa-LnrED ISOTOPES TM AIB

Saogpllng Area Bo. of Sampling Days Maii lmum* Average*

B" Biag. - Clean 60 k.l 0.2

Lov-rlsk 60 0.6 0.1

Hl^-risk 6Ci 2.5 0.1

Exhaust 60 3-3 0*1

ttt»W

UNCUSSIFIED .. 9 -

UNCUSSIFIED

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UNCUSSIFe «1CK

UNCUSSIFIED TABXaS V

CCMTEKCBATIOB Of SH0BT-LI71D DAUGHITER PRODUCTS I B AIB

Saajpling Area

"WD" Blflg.

'•R Bldg.

"GP Bldg.

OWjSiV

mt

-

-

•a

LO«r-rlsk

Clean

Lov-rlsk

1-B Clesn

Lcw-rlBk

Bo

^Multiply All Valuta by

. of Seytaplos

521

62

—

63

imm

10-10 ^ cfbtain

KteKlsan*

13.1

0.6

mm*

2.0

mm

iJiC/cc

Av^nrege

0.9

Q.k

mmwrn

1.1

«««•

To measure the oooeantraticm of thoritmi in the alr^ sondes are collected much t2» same as in polonitm areas* Bovevar, after HM i I^ t ia l alpha-count, the f i l t e r paper is placed on f i le and than reeonntad oely after suffiolsot tiaa has elapsed to permit the decay of tiba in i t ia l ly oolJUKsted short*llv^ dau^ter products in the a i r . Tha dele ifad alpha*oouat gives a close estimate of ths ttoriua in the QST a t tbe tiaa of oelleotioa.

Table VZ shorn t t e resulta o£ sttsh s^s^lee ooUected during Septesiber, October, and Sovenibar, 1955*

TABLE VZ

(x&tsEmsumrs cf wcmm m AIR

Saopling Area Ho* c^ San^Uns Bays

"WD** Bldg. - Lowwrisk 60

^R" Bldg. - Clean 60

Lov-rlsk 20

"OP Bldig. - Clean 60

*S*ultlp2y AH Values by Ifl"^ to OtetiMn HO/CC

02BEB AREAS

Several areas in the plant retxojre sonitoring for the co»ae)Stn:atioo <^ beryllium In a i r . Saog^s are collected 00 iSmtman BimS&er kX paper and are

ximnuP

21.8

0.8

OA

3.3

Average

1«2

0.2

0,2

0.5

uHCUSSW -11-

UNCUSSIFIED aaalyaod apectrograidtiically for barylliae content. Boring thia qtuarter 87 roatina aamplee vere evaluate. The niaTS.mnw oonoaatration of barylllim vaa 0.75 micrograiB par cioMo mater of air* and the aT«rafia of all samples vas 0.0 )6 microgram per eubio mater. The maxiscagt permlaalbla concentz^tios la 2 mlorosrama per cublo mater.

Two beryllium iacidanta ocoorred in B-168 during this qoartar. The first occurred on Hovember 22 in the east fumaeo udsien a theraal pot eontaining 180 grams of bsryHiua developed a poimture at a temperature of 90CPc. Filter paper, from an air aampler mounted besida thia furnace, vas removed ten ninutea after the incident occurred and analyzed. TSbls paper indicated a maacimum eon-cemtration of 11 Blcrograms/a^ of air. Another aample was taken imaediatflily after thle aanple, axui ahoved a conop&tiratloa less than 0.06 mlcrogras/ar of air.

The second incident occurred on Deeeaber 8. The exhaust line from the vast furnace became dogged. Thia forced a. beryllium mixture into the room air. Unfortunately raaults of air and vipe samples taken daring thle period cotild not be determined beoaasQ of an error made in analysis^

Althou^ both fumuses are enclosed in a large open face hood, a reooft-mendatiott vaa made to further enoloae the vest fomaoe. This has been done.

Protactinium saparatlon vork in the Metal Beoovaiy airea of the "BB" Building is approximately half oomplated. Air samplea taken during this opraation in-dleates that airborne partionlate radioootive matter has not measujrably increased oTer the normal average background in this area.

Ve are presently engaged in eatablishing vorklng levela, monitorlag pro<-oedorea* and urlnalyaea for the went ionium and plutonlua progrsma. In the next q^oarterly r^ort, a separate eeetion vill be devoted to reporting on these laotopes.

PIBSOBKSL MQIITOHISO

B. A. Oaillet

BIQASSAf

Personnel vorklng in polcniua areas are required to submit urine apeeimens at regularly sohedoled intervals. An IndiTidnal may be asked to sabmlt uamgi»t reakly, blveekly, monthly, or qioarterly, depeiading upon the frequanoy of contact vlth polonium, upon the typea of operations performed, and upon the amounts of polonium hai^Lled In hie normal work area.

JhiriQg the per'i.od covered by this report, Wi itrlne specimens iu>l 56 control sasples were analysed for polonium content. 'Ihree mxplayoB have bean placed on the "hot" roster, having submitted aas^les with a polonium density great«ir than 500 disintegrations p«r misinte per 24-ihanr sample which Is the maximum permissible level for excretion in urine. As the period aads ono man has been remov«id and two men continued on the "hot" roster.

UNCUSSIFIED -12-

UNCUSSIFIED 5530 detorminatlion of actinium-227, radiitss-226 aa i thorim-228 in t t e

body by an indirect aii^aysis for radium has cmtinued.

Forty-five speclsMwis, plus controls and spiJws for each batch, vere pro-ceased, counted, and enalyzed matheaat;toally for x^bdit»-223f radium-28^ and radltM-226. Badi«m»223 and radiua-22t^ r e su l t s are then used t o calculate the amounts of actiniam-227 and thorluB-228 In the bodr* AH saaples analyzed during t h i s q^uarter yielded low r e s u l t s , v i th th« h i^ ies t being l e s s than 0.10 times the maximum pentdiisibla body busrden.

POCKET METERS

Total mmiber reed 6,1&}

BtnSter of single readings

[0-30 mr) 6,09'-. (30-100 mr) 62 100-200 mr) 1

(over 200 mr) 3

Ihmiber of paired readings

(0-30 mr) 3j052 (30-100 mr) 2k (100-200 mr) 0 (over aoo mr) 4

PZU! METE5S

Regular*

JSae&mr processed 399

BuBsbar of readings

( O - ^ mrap) 3i€h (50-150 mrap) 32 (150-300 mrap) 1 (300-600 mrep) 1 (onrer 600 mrsp) 1

ViSit<K'

BuEiSier processed 173

Bimtber of readisigs

(0-50 mrep) 1& (over 50 mrep) H

*Wom fear a period of two vwOm

UNCUSSIFIED - i >

Bfeubronfilma* UNCUSSIFIED Itosiber procesised 159

Buatoer of rexuUngs

[0-100 aarem) 156 [100-300 mreaa) 3 [over 300 arem) 0

*Wom fa r a period of two v e ^

MHBOSeiEIBTAL SUBVISB

R. A. OulHat

AIR SAMPLBSPB

Air sasrples a r e co l l ec ted rou t ine ly a s nearity downvixd from Mound Leboratcnry as i s p o s s i b l e . Of the 67 saagples co l l ec ted t h i s q:uarter, 65 ssgeqaaa Showai no alpha count above badsiground. The h i f i ^ s t sample indicateii a polonium concentrat ion of 5*8 x 10*^3 ixc/cc of a i r .

BBER SBHVESB

The Gbreat Miami Biver i s mcmitorad fen* concentrat ion of poloniua i n mud, water , end vege ta t ion . Sana vegeta t ion samples a r e c<^Lleotad a t var ious other s i t e s . U ^ u i d wastes coatamlnatad v i t h isotopas o ther than poloniun a r e smaH in imlma aad a r s t r e a t e d axO. handled sapa ra t a ly a t Mound Laboral^nsr* Polonium, tha re fo ra , i s t h e major contaminant t o ba found i n tha l i q u i d aff luent*

Saaples analyzed for polonitmi during the xost quar te r gave r e s u l t s which a re sunaarisied i n Table VIZ*

TABLE VZI

QWCSESXESM!^^ OF VGUMIfM IR RIVER SURVEY SAHFXil

Sajoople Bo. Collected {feximuai Average

Water 63 U.18 x 10"7 ao/eo 1.28 x 10"^ }iC/cc

Mud 31 2.77 X 10"^ MC/sn 1.7 x 10"5 uC/ga

Vegetation 67 9 .01 x 10"*7 MC/ga 6.6 x 10-8 ^c/go

The nsximtmi vegetation sam^ Les (both samplen i^ve t >e some count) weire col­lected at Blancheatar and lUdland, Ohio on OotcftMn: 1^, 1953 • The maximum sud sasig^ vas collected on October 8, 19^5» and the maximum vater seoplo vas col­leeted on Deceaber 23, 195^# at the same location, ^ ^ r e the plant efflvant enters Hie Miami Biver.

UNCUSSIFEB -i ifr-

UNCUSSIFIED

FfffiScmm. DISISIBIITZOB

PffiSOHHSL (AISRAQB BMPLOIMSHT WOR Qfl^TSE)

Sapervieor Assistant Becdth Stqperviaors Bealth Fhysicists Health Sorv^ors Laboratory Aesistaate Decontamination Workers

1 2 2 2 1 u

Total 19

ALLOOASIOB OP TIKB XB HiB-KCWJaiS

BloaSBsy Filffl, Poc&et Meter, and lass^ronent

Operation Survey - "1" Area

"Q" Area including Xfiosdry Monitoring and Instrument Operation

Cnetodial and Decontamination "T" Area "0" Area

Admlniatrative

3 3

9 6

a*> 9 3

Total 57

UNCUSSIFIED -15-

FIMD ni- i4nciiM»"NT DATE FILMED: /0'i3-7s

FILMED AT 24X • **"™<' «*«*fi2ij;;a** -t i v^I ' i »fs-SiS*^^-^- .#»* :^^*s*i.«i*«»*J»*^^»."

1.0

I.I

1.25

i is il|2

11.4 1

||||8

11.6