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Cover Sheet for a Hanford Released for Public Availability Prepared for the US. Department of Energy Pacific Northwest laboratory Operated for the U.S. Department of Energy by Battelle Memorial Institute
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This i s a historicaldocument that i s being released for public availability. This was made from the best available copy. Neither the United States Government nor any agency thereof, nor Battelle Memorial Institute, 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 itsuse would not infringe privately owned rights. The views and opinions of authors expressed herein do not neccesarily state or reflect those of the United States Government or any agency thereof.
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RADIATION PROTECTION DEPARTMENT REPORT FOR AUGUST 1965 A Hanford Historical Document Released for Public Availability
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REPORT FOR AUGUST 1965 -L a born tom Experience A violent reaction in a hood,vith 8ub:;quent fire end spread of contaminaAwust 23, 1965. The fire was quickly extinguished by fire prate ct lon person nel and cleanup efforts were initiated Immediately. in the Reactor and Material a Technology Department and one Babcock It Ull cox employee on an extended training assignment vere exposed t o airborne pluto - temporarily restricted from plutonium vork unti1ev fil u atl on of n-ny possible plutonium deposition 1s completed. The other nine ea ploy ees received n in or Ten staff members Two of tnc eleven persons ve retreated w!th DTPA And were aoeay data during the month. employees a t lienford who have received intern nl pluto3tm deposit l. ? n s evaluated at25% of the maximum pel - mls sib le body burden of 0.04 PCi239Pu vit.h hone as reference. There are currently eight Eat tell e - R2rth west Concentrations of radioactive material e in .-.he air, vat,er, and fLlodstuf!; of the lIanfoz-d environs were at the expected levels during the month and indicated no unusual cond it iq it e. tonium Fabrication Pilot Plant (308 Building) immediately after the fire indicated that. no ye1cap.e of plutonium to the environs occurred. Procedures for the controlled rele68e of airborne contamination for the PRTR containment vessel and etorage basin vere reviewed. in eliminating the Reed for adell berate release frm the storege basin.
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Temporary limits for the con to l x ment vessel vera derived which will not result in any environment nl consequeklct@e renter than those used a8 criteria for establishing vent il nti on contalnmetrt trip limits. Core Operation, was issued for canment. This sQFplernent will describe the che mic nl shim system for control of the large excess ren c ti vlt y t.o be charged in the batch ccre, and will propose 1im;t.s designed tons suf e that fuel element cores are not molten di ring eq ulli br lun operation. P.n ln ltR I draft of the physics de script lon was comp let cd - Work was resumed during the month on the mnlop, model for transient hcnt of fuel.Modifications have been in cor porn ted in the modeJ t o mRke the progrm mort adaptable to the equipment. Tn it i al stenriy s tnt ep c ver nnd tea per sture distributions fire pre een tl - rn v nll s ble from the STIITP (stcndy and the present Tiger V setup will be used too btn in trn ns lent tern per ntu res for the various postulated accident crises. %e ndditSonn1. method is being considered for use in ann3yzing the transient temperature d in trl hut ion n for tcm peret ure distributions vhich would reduce the nmoiint o f nnnlpat, time required for ob tal r ; ing the results from computer code WR S successful and plane are uncicr way to use the Anme equlpment, vlth some ple ted in the riqture loop The flux level of the PRCF wan caused tons cl ll at ca ~ nus oid nll yby n roto!.- transfer function plot of amplitude versus frequency Rv nl ue of that was obtained by noise ann lys in of n slnilnr core londlnp,. Vihrfttlrm problems that caibsed difficulty in the In It in l tests vcrc e l lmlnnted by n tlf bri bushings along the rotor a haft nnd more support to the motor stnnd guarde haly a is was distributed fcl. comnent Ir r:-cI!mlnary rel lii bl1it.y
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analysis has been started based on the scope design of the eaf e ty eyetern. The vendor, Astrodeta, p1.ans to sub it the8afety system detail drawing8 during early September. transgnetlc clutches only,ifthe pover supply is ene rgl zed by two eyetern normal el gn als, of the fol lov f ng were to occur : Pover is supp l led to the vertical safety roci elecTwo sep u atc,jn dept nd cnt,str fe ty logic circuits would Ei th tr of two auxiliary nuclear sal'ctzt channel e out of limit In either level,or period, or not on acale Critical 1t y monf to rout of limit Digital c un put er supplied : Period out of limit Level out of limit Cm put ation not performed correctly Reactor environment out of limit. The study of the effects of pre dosing on LiF thermol-srcinescent phos2hore in sensitivity of 2.5 to3 times. in crt a st these nr it lv it y over that noted et 1,000 R . The thermo luminescent dosimeter reader vas remodeled vith the addition of new heater contacts and a new regulated current uource for phosphor heating.A check on there pro - duc i bil it y or the system utilizing 20 calibrated exposures of 100 and 200 m P Pre doses to 5,000 R did not el gni ff cant ly difficulties resulted in non-uniform ~ list ri but io nof ?.he L.IF vith in tte glass. Hew tec&lquer to-fmprove the uniformity of tke dist rf but ici b are being invcs-
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fluoride hood a t *.he Weapims Fabrication Building, the Hanford film be@e ne.Itroa dosimeter result.cd i n film with gm n and x-ray doses sufficient to darken the entire cl aul sion cad,co rise qu cnt ly, prevented the ev slue tion of neutron dose by track countir,gn :lo gamma radiation inter fc rence va8 observed in the fi eel on fragment neutron fission fr-cnt do aim c ter. 23el J foil. The re au lta for five of thece dosimeters exposed under condltlone found at the plutonium fluoride hood w e aw-zorized in Tfible 1, date. i n Table I shows th nt about 70 t o pC$ of the dose reaching the dn nl - is recorded by the NTA film used in the Hnnford film hd p,e nctatron dosj.:.etc!r. The in ten ned late and thermal neutron c nei ' ~ ie8 were meesurcd by The fission neutron dose cont rf but ions ahove The setup and perfonnnnce study of a nev flu oro meter g?n.ss dosImet.cr ren4pr read erie eu peri or to that of our previously used readers. of the nev reader to glass dosimeters of various sizes and shapes in tx r : r ? l - lent in that only Q simple do sine ter tiolder is rt qui red to convert free O I : C Evaluation Indicated that the long - tern stnbi lit y of t?ic Rad lo logic d Development The study of low level plutonium air concentrations vnB continued by cn1lcction of vee k ly ?ramplea fran the Plutonium Metallurgy FR cill ty nnd the
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Plutonium kv clop ment Laboratory. by plac in ~new detectors In service on two multi - channel aral yz ers. mate ly 100 air samples arc nw being evaluated to determine particle size distribution and to identify their isotopic composition. A number of air samples ve reevaluated for plutonium content. were taken at location a upwiad and drrvnvind of the Plutonium Dwelopment Laboratory during and immediately after a hood rupture. amaunts of plutonium vere found f n any of the samples altho wh significant mounts of radon and thor on natural radioactivity vas easily detected.Air samples were obtained frcm the laboratory and particle size analysis studi er are in prog ree a ; however, the high gross activity on the air eample filters and the presence of both uranium and pluto niu n make the particle A lar genre a proportional counter for low energy beta counting of air samples vas ssscmblcd for clir stunple evaluation as needed. The evaluation of s asp les was continued yer f oman cc evaluation and study, and 328 Buildings. By examination of the charts on these in et rum ents, one can determine if a high neutron flux has occurred at the1r.str ment loc nti on. The spacing and geomct'ry of the detectors for this verification Bystem was designed to provide an instrument vith in 800 feet of any possible critical it y !::a t rum cnt a are adjusted BOth at they routinely count cosmic ray neutron background end the occurrence of 6 small number of counting peaks 011 the chart record a e sure s instrument operation.A paper describing the design, use, and loc sti on of these l net rt ment s is being prepared. The third in r tr ment soon t o be ln stall td is undergoing a final Installed in e tr men te are located in 314 At this distance,the neutron flu at. the detector location will Test v ater sample collection with the prototype aeven-day continuous water sampler continued under field conditions in the COlUf~Ibia River. "hie snmp ler util lz esa capillary tube to meter the flow from the sampling ch m ber. As the air flows from the chamber, water Is admitted through8filtered orifice to provide the s-mple of inter eat, The advance in the develop nen t of thfa o f the sampling chamber to yle lda system which can collect a uniform sample without electrical or other Fover of any type. A water sampler vith 24 rep a rate collection bottles vas dceigr?cd to provide
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for example, will collect one liter of water each hour for a 24-hour period and provide the 24 separate water samples for analysis, the timing mcchanism, sampling duration can he adJusted to meet desired requirements of sampling nnd water volume. "lie shielding requirements for the transport of some Ship pine port fuel elenents from Chemical Processing Department t o the Radiomctnllurgy nu!ldine; were cd cula ted at the request of the Ceramics Reaearch Sect i cn - A m!nimum =: 4, inches of lead le req\tlrcd for the tr arc sport cask. En\ lromcntal Studi ca hat u dy of the relative importance of different mechanisms causing lov rndlo - of Sanitary Engine c rl ne, Universf t y of Illinois,dur lng his si mer nsslenment I ihta on suspended VB.dissolved nuclide partition WBR obtnined from the Joint U.S.G.S--Radiologlcal Chemistry Section studies. v ater flow data from special well Rmpleb, ard a reasonablt fi as mp tion a i :(, vater velocity through the river bed above the nanney well co llcc tore,Pr. Eving WAS able to account for o beer ved concentrations of nuclides ne naur cd inthe Kennewfck water by filtration Md decay in the riverbed. These reeultn indicate uniform distribution(within 10%) o f effluents i n the river a t Posco-Kennevick, and no effect on the distribution iron the Ydtinin river or upstream ground water dilution - school children in September, The initial scheduJc is for Sncnjawen school, vhere shout 210 students vi11 be contacted.This program will utilize ncu diet forms end participation certificate3 revised on the bnsln of experlcncc! gained In Benton City in the SpringEarl7 La the month n copy of the first canplete draft of the "Nuclear Faci 11taem Marltorlrlg Guide" wan sent to each of six pover rtactor sites iPn th fl nt fer, Eilr River, Ldroa ~ c ,D res d tn,Indian Point, nnd Yankee) for review and cicnt. Erch plant uas via it tdl nter in the ffionth and the comments were brrrwwd wath appropriate personnel.. Inportant systems design dc script to nh m d operating data vert also obtained duriw the v irl t. tiom. UT needed u8rte ul t of the review. flo major modifica-
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