ML20147F914
| ML20147F914 | |
| Person / Time | |
|---|---|
| Site: | 07001297 |
| Issue date: | 02/26/1987 |
| From: | Ruff G BATES COLLEGE, LEWISTON, ME |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20147F135 | List: |
| References | |
| 106854, NUDOCS 8801220022 | |
| Download: ML20147F914 (9) | |
Text
{{#Wiki_filter:,. o o 1 l Department of Physics Bates College i Lewiston, ME 04240 February 26, 1987 U.-S. Nuclear. Regulatory Commission I Nuclear Material Section B 631 Park Avenue .l King of Prussia, PA 19406
Dear Sirs:
Here is our ranewal applicaticn for license # SNM-1266. The only significant change to our previous renewal application, dated March 5, 1982 (copy attached) is the addition of the following paragraph to section 4 s e 4 4.4 John E. Smedley Ph.D.,
- Physics, University of Colorado, expected 1987.
Semester cources in Atomic and Nuclear Physics and Electronics,. Colby College. Courses in Ot antum i Mechanics, Instrumental Methods of Chemistry, Statistical Mechanics, and Reaction
- Dynamics, U.
Colorado. On-site tr&ining in nuclear radiation laboratory experiments at Bates College will be provided upon arrival at Bates in fall, 1987. Another minor change is my own title and phone number, specified in section 1. This section should now read: k 03 N 1. Applicant: f4_ (? T.SHedl,ey Reynolds, re Bates College Department of Physics IPrentdent Lewiston, ME 04240 CiIisenship: USA (207) 786-6322 as George A. Ruff, Professor '3 Fturpqp)? 4 U 3 ' ', 't uur i;onsideration. ~4Wankwou-f or y/.S J bs iL 44$ b p r .t.7 Li. j~ Sincerely, / /g u. .. /. [. - - - g - (,~, 3... / ~ (, [ (' a l :' G e o r g e - A'.-Mu f f r e ., /, y i z. kq j 1 Professor of Physics Dn. C,.r.4 3 k d - ~12071 786-6322 8801220022 870626 REG 1 LIC70 0 9 "l/'"A D 1007 PM "~ f SNN-1266 "QFRCiL Rt't;un0 COPYI, nr51 o L
J.. o. O e renoual tpP]Jestion, Licenso 8 P NP-176 6 .,a r c h 'i, TR2 ~ ~ ~ ~~ 1. Ip p: ican t: na tes Co llege T. Ue dl ey Po yn olds, repar tmen t of Ph ysics President f.ewi s ton, V E. P42/0 sci t i ze n shi p: USA p o 7) 9159 Ceorge A. RJ f f, Ch a i rma n 2. tc tivi ties to be re r formed Source to be permanently housed in pa raf fin-filled 5 5 gallon d r um. So l id s ampl e s will be inserted into the drum for neutron activation experiments in an advanced undergraduate ins t ruc tion al physics laboratory. 3. % terial Specification: Pu -2 3 9: On e sealed source, S Cu r ie,. bu n ufac tured by Mo und La boratory, Ma n santo Co r po ration. A. Technical Dualifications of Personnel /.1 George A. Ra f f Ph.D., Physics, P rinceton Un iversi ty,1966 One year c our sewo rk in theoretical nuclear physics, including na thema tics and calculations basic to use and measuren.ent of r adioactivi ty, Princeton Un iversity. To tal of eigh t we eks in special training programs covering radiation measurement, standardization, monitoring techniques, and biological ef fects o f radiation, Argonne Na tional La bs, DCPA Sta f f College, and Miami Un iv e r s i ty. Th ree years experience teaching un d e rg radu a te courses in nuclear radiation physics, i nclud i ng instranentation and biological ef fects, Ba tes Co llege. /.? John K. P r i bram Ph.D., Physics, University o f Passachusetts, 1968. One year coursewo rk in theoretical nuclear physics, U. Mass. Two years experience teaching in troduc tory n uclea r physics, one year experience teaching Laboratory Physics course involvi ng ba sic radiation measur emen ts, Ba t es Co ll eg e. A.3 Gene A. Cl o ug h Ph.D., 4)ol led Ph ysics, toltech, 1976 On e ye a r c our sewo rk in theoretical nuclear physics and one year course in La bora to ry Physics, i nclud i ng radiation measurements, Ca 1 tech. One year experience teaching elenentary nuclear physics and advanced laboratory course involving nuclear radiation measurenents, Ra t es Co ll ege.
o. o i t. OP c il i ties and Eq ui[m en t. ( Fe e also the attached drawing.) 5.1 St orage Fa cilities Ou r facilities include a locked storage room, keys to which are available only to the authorized users named in section 4 The room has ninimun wall thickness equal to 16 inches of concrete, and is equipped wi th underground storage 1
- wells, n, e pa ra f fin tank in which the source is stored and used is always in this room.
5.? Alpha detectors 1. ORTEC BA-2 3-50-100 sur face barrier detector & associated electronics 2. Tracerlab FC-16 windowl ess fl ow c oun te r i 2. t.ud lun a 3-2 a lpha probe & model 3 survey me ter < 1. 0 m g /s q. e n. wi nd ow 5.? Be taslamma Pe tecto rs 1. Be ckr a n LS-100C liqaid scintillation system 2. El-tronics LSC shielded well counter with NEC D-515 GM-tube 3. Ludlum model 3 survey meter with 24-7S probe, < 2. 0 ng /s q. c m. wi nd ow 5.4 Gamma De tectors 1. Two Pa I (TI) scintillation detectors wi th SCA's, ar.d a Nuclear Pa ta 1100 nultichannel analyze r are available. 2. Nuclear Chicago 161M count rate metera with Raytheon CN 1021 04 t ub e s. (a available) 5.5 Mi scellaneous Additional f acilities include about 50 lead bricks, r emote handling tongs of 36 inch and 18 inch lengths, d isposable i r ubber gloves, plastic trays, paper line rs, and lead storage containers. A f un e ho od is located in the laboratory a rea. S. Protection Procedures f 6.1 R e s po nsibil i ty George A. R2 f f shall be responsible for radiation safety i neasures related to this source. Hi s training is given in section 4.1. Access to the storage room containing the source j shall be restricted to the individuals listed in section 4. i i 6.? Pe rsonnel Monitoring None required. f i I 1 I { b-
O. o 4.3 nadiation survey 7 An upper lini t to personnel exposure can be calculated in the following way: A Pu-Pe neutron source has a yield of IEA neutrons per second pe r cu r ie. (See Cember, Introduction to Health physics, Pe rgam en, 1969, page 139.) Peglecting absorption in the tank and i ts wa lls, the 5 Curie source can produce no more than 165 thermal neutrons per square centimeter per second over the 3.3E/ square centimeter area of the tank. Ma e activa tion of a sample requires less than 30 seconds in the storage ro om. In stne all this tine is spent in direct contact with the tank s ur f ace. Die absorbed dose rate to a 70 Kg person of 160 cm he igh t is calcula ted for a thermal neutron flux of IE4 neutrons the per square centimeter per second to be.74 mead /hr due to dN (n, p) KC r eaction, and 7.7 nrad/h r due to the 3H(n,Y)2H reaction. (Se e Cenber, Introduction to Health Physics, Pe rgamon Pr ess, 1969, pag e 17 4. ) Assigning quality factors of 1 to the gamma rays and 10 to the protons, the total dose equivalent to the individual for a IE4 neutron flux is 15.1 n r en /h r. Th e corresponding f igur e fo r a flux of 165 is.25 nr em/h r, o r 2.1E-3 r r em f o r a 30 second expo sur e. The normal enrollment in our-Laboratory Physics course is l ess than 20 s tud ents. If 20 stud ents each chose to do the n eutron ac tiva tion experiment, i nd iv i du a lly, in a calendar quarter, the maximum dose equivalent to the individual exposing the sampl es wo uld be 4.2E-2 neem, o r 0.013 percent of the naximum permi tted dose of 0. 31 rems per calendar quarter. Wipe testing of the source presents another occasion of personnel expo sure. During this operation, the source is removed f rom the paraf fin tank. The individual per forming the test is exposed to 4 MeV neutrons at a distance of 1 meter from the source for a tim e less than 60 seconds. The first collision dose rate for elastic scattering of 5 MeV neutrons in tissue is calculated to be 28.P mrad /hr for a neutron flux of ?E3 neutrons per square centimeter per second. (Se e Cenber, Introduction to Health Physics, Pe rgamon, 1969, pag e 172. At a distance of IPO em f rom a 3 CF Pu-Be source, the flux is 40 neutrons per square centincter per second, resulting in a dose r a te of P. 6 mrad /b r. Assigning a quality factor of 10 to fast n outrons, the resul' ting radiation dose equivalent rate is 6 n r em /h r, o r 0.1 nr en pe r 6 0 second expo sur e du r ing a wi pe te st. ih i s is approxina tely P.P3 percent of the maximun perni tted dose o f P. 31 r ems per calendar quarter. 6.A Wa s te d i s po sal No wastes will be generated under the proposed program.
o o 4.c 9e cord venagement Vi pe te s t records will be kept in a bound notebook in the source storage room. License and inventory records will be naintained in the of fico of the physics department Chair. i 6.4 va terial co n trol No special nuclear na terials will be ordered or received under the proposed prog ran, t 5.7 Leak Testing The source is normally contained in the paraff!n filled tank, and is removed only for wipe testing by one of the users specified in section 4 above. Die source is permanently I nounted at one end of an 18 inch long polye thelene rod, the o ther end of which is handeled by the user. A small piece of moist pape r towe l, i tself held wi th 18 inch tongs, is wiped o ver an expo sed source sur f ace, and the source is immediately returned to the tank. Th e towel f ragment is then counted for alpha enission using one of the following counters and associated counting geometries: 1. Tr acerlab yodel SC-16 wi ndowl ess flow counter: Wh en th is instran ent is used, the towel fragment is in ser ted into the active volume of the detector. Di e ai r admi tted to the chamber is then purged wi th an appropriate counting gas and the c~ unting gas is kept o a t a slight positive pressure while the count is being taken. 2. ORTEC model P A-23-50-100 surface barrier detector: When this detector is used, the towel fragment is placed with the detector in a sealed counting ch am b e r. Die distance betwe en the fragment and de tector is less than 10 centimeters. Airis evacuated f rom the chanber to a pressure less than
- c. 0 5 To r r.
i 3. Ludlum model d 3-2 alpha probe Since this detector ha s an alunin ized nyl a r wi ndow o f <1. c mg/sq-em thickness (equivalent to <0. 8 cm range in air for 5 eV al ha particles), and since the range in air for v t 5vev a4pha particles is 3.6 cm, t he towel f ragnent must be wi thin 2. 9 en of the detector window i f radiation is to enter the active volume of the probe. t Th e refore this d etec tor wil'. Se used only i f the f r agme n t to window d istance does not exceed 1.c en. i._.. _, ~. _ m y,y_,,y.._ c...
o 9 /. El-tronics f.Sc snielded well counter with NEC r-515 f o r equiva l en t) ' CM-t ub e Since this detector has a nica window o f <?.c rg/sq-en thickness (equivalent to <1.2 en range in air for c vev alpha particles), and in air.for 5 v v alpha particles is since the range e ?.4 cm, the towel f ragment nust be within ?.4.cn of the detector window i f radiation is to enter the ac tive volume of the tube, tierefore this detector will-be used only if the f ragnent to window d istance d oe s - not exceed 3.P cm. Th e same detector is then used to. count a 0.005 nicrocurie An-2 41 s tandard sour ce. If the count rate from the towel -frag ent exceeds that f rom the standa rd, the normally capped tank openings will be sealed with plastic tape to awa it the a r r iva l of an appropriately licensed decontamination and waste d isposal service, specifically In terox, Inc., o f Na tick, Ma ss. 6.P General Sa fety Instruc tions Th e users specified in section 4, above, will be provided wi th copies of this license application, and the use and wipe test provisions contained herein will be reviewed by them as a group. G.o Ene rgency Pr ocedu r es In the event tha t removable contamination in excess of P.00 5 nicrocurie is d etected during a wipe test, the capped ports of the paraf fin tank will be sealed with plastic tape. A wi pe test will than be done on the outer sur f ace of the tank, near each of the capped ports norna11y used for the insertion o f sanpl es, a nd also near the po rt used to renove the source i tself. If renovable contamination exceeding 0.005 nicrocurie is found on th is sur face, the normally locked door to the s torage room will be sealed wi th pl astic tape. Th e user will then curvey his own person, using one of the alpha-sensitive probes specified in section 5.7, checking the probe with the P.00 5 ric rocur ie standard if this has not already been done as pa r t of the wi pe test procedu r e. If d etectable contamination is found, cleanup via detergent, wa ter, and paper towels will be executed in the nearest laboratory sink in such a way as not to release wa ste wa ter tc the sewe r system. Af ter cleanup, the sink will be covered with a plastic seal. Ac ce ss w i ll be forbidden to all rooms where detectable contamination has been o bse rved, and an appropriately licensed decontanination and wa ste disposal se rvice (Interex, In c., Na tick Pa s s. ) will be called in. J
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- r aining of re rsonnel The users specifie<* in cection / above wl31 review a s a aroup all ra terial and procedu r es contained in th i s a ppl icat ion, rollow-up reviews will occur whenever the license i s e,e nd ed o r r en ewe d.
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~' Q ~ fp n i i BETWEEN: William O. Miller, Chief License Fee Management Branch l Office of Administration ? r John E. Glenn, Chief gg g/gCf l f Nuclear Materials Section B Division of Engineering and g v /w Technica' Programs 3//7 LICENSE FEE TRANSMITTAL A. REGION 7 1. APPLICATION ATTACHED Appliccnt/ Licensee: O A-Application Dated: ,2-d h'N 10GS54 Control No.: License No.: blOOl-)2bb 2. FEE ATTACHED Amount: Check No.: i 3. C0tHENTS Signed Date i B. LICENSE FEE MANAGEMENT BRANCH I-9 l 1. Fee Category and Amount: 8X / A [f[9, //la 2. Correct Fee Paid. Application may be processed for: Amendment Renewal License Signed L w/n o Date e l REGION I FORM 213 (MARCH 1983) L ,}}