Information Notice 1990-24, Transportation of Model SPEC 2-T Radiographic Exposure Device
UNITED STATESNUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDSWASHINGTON, D.C. 20555April 10, 1990NRC INFORMATION NOTICE NO. 90-24: TRANSPORTATION OF MODEL SPEC 2-TRADIOGRAPHIC EXPOSURE DEVICE
Addressees
- All NRC licensees authorized to use, transport, or operate radiographicexposure devices and source changers.
Purpose
- This information notice is provided to alert licensees of a recent change inthe NRC Certificate of Compliance No. 9056, which imposes more restrictiverequirements for proper transportation of the model SPEC 2-T radiographicexposure device.It is suggested that licensees review this information for applicability tooperations involving transportation of radiography devices, and distributeit to persons responsible for proper transport of devices. However, thisnotice does not constitute new NRC requirements, and no written response isrequired.
Description of Circumstances
- A certificate of compliance is issued by the NRC when a specific package meetsthe requirements of 10 CFR Part 71 and is approved by the NRC for transport ofradioactive material. Conditions for proper transportation of the model SPEC2-T radiographic exposure device are stated in NRC certificate of compliance(COC) No. 9056 (Attachment 1). These conditions augment the requirements ofthe U.S. Department of Transportation and 10 CFR Part 71 of the Commission'sRegulations for the transportation of radioactive materials.Prior to this recent change, the COC specified that for transportation of morethan 110 curies of iridium-192, the radiographic exposure device must eitherbe within a protective overpack or transported by exclusive use shipment inaccordance with the requirements of 49 CFR 173.441(b). The purpose for thiscondition was to assure that the radiation dose rate on the surfaces of theradiographic exposure device or its overpack did not exceed 200 millirem perhour.POg PR I¢ q0 0f11014dz Ai_0 IN 90-24April 10, 1990 The NRC was informed that the surface dose rate on the radiography devicecould exceed 200 millirem per hour when loaded with 110 curies of iridium-192.Apparently, the radiation measurements used to determine the 110 curie maximumactivity were not corrected for the distance between the surface of the deviceand the effective center of the radiation measurement instrument. This cor-rection was because of the small dimensions of the model SPEC 2-T depleteduranium shield.Discussion:The staff evaluated the information obtained from previous radiation measure-ments and determined that the dose rates had been underestimated. The maximumactivity in the model SPEC 2-T device that corresponds to a surface dose rateof 200 millirem per hour is 45 curies of iridium-192. As a result, conditions8 and 9 of the NRC's COC No. 9056 were amended to specify 45 curies instead of110 curies. Also, the maximum quantity of iridium-192 per package was reducedfrom 240 curies to 225 curies.Users of the model SPEC 2-T device should be aware of the enclosed amended COCNo. 9056 issued on February 21, 1990. Users should also note that a radiationsurvey must be made prior to each shipment to ensure that the external radiationlevels of the devices or the overpack do not exceed the limits specified in10 CFR 71.47, and 49 CFR 173.441.This information notice does not require any written response to the NRC. Ifyou have any questions about this matter, please contact the appropriate NRCregional office or this office.Richard E. Cunningham, DirectorDivision of Industrial andMedical Nuclear SafetyOffice of Nuclear Material Safetyand Safeguards
Technical Contact:
Steyen L. Baggett, NMSS492-0542
Attachments:
1. NRC Certificate of ComplianceNo. 9056.2. List of Recent NMSS Information Notices.3. List of Recent NRR Information Notices.-.-. 9 Attachment 2IN 90-24April 10, 1990 LIST OF RECENTLY ISSUEDNMSS INFORMATION NOTICESInformation Date ofNotice No. Subject Issuance Issued to90-2090-1690-1590-1490-0990-01*89-85Personnel InjuriesResulting from ImproperOperation of RadwasteIncineratorsCompliance with NewDecommissioning RuleReciprocity: Notificationof Agreement State RadiationControl Directors beforeBeginning Work in AgreementStatesAccidental Disposal ofRadioactive MaterialsExtended Interim Storage ofLow-Level Radioactive Wasteby Fuel Cycle and MaterialsLicenseesImportance of ProperResponse to Self-IdentifiedViolations by LicenseesEPA's Interim Final Ruleon Medical Waste Trackingand Management03/22/9003/07/9003/07/9003/06/9002/05/9001/12/9012/15/89All U.S. NRC licenseeswho process or incinerateradioactive wasteAll materials licenseesAll holders of NRCmaterials licenses whichauthorize use of radio-active material attemporary job sitesAll NRC ByproductMaterials LicenseesAll holders of NRCmaterials licensesAll holders of NRCmaterials licensesAll medical, academic,industrial, wastebroker, and wastedisposal site licensees*Correct Number tor 90-01 should be 9001014 iON=mc PrE aslcmERTIFICATE OF COMPLIANCE __ _enR" FOR RADIOACTM MATERIALS PACKAGES ATTACHMENT 1s.6vPA0CAO WN P AAWE90bg l 6 l USA/9056/B(U) I 1 1 pS. This " tri nwto te pacagi J edonet desced hi Iem S below. 1ablO .nitd bf s h i OCodeof Federal legulations, Part 71. Paciaglig and Transportation of RadioactivO Mateab. This certifct does ot a imeu mie onior trom Compliance with any Mwmmei t d le gutations of li Ut Osps'tent Of Trfanportation or otherapplicable regulatory gencisL cuding go governme of any ountry through or ito which lie Packag will be Irneportd.S. THIS CEPIICATIE m9 MUM ON THE BASIS OfA SAFrT AALVSW REPOT OF THE PACKAUE8E)NJo aO APPUCATI Oa. UILU TO Mm &WAimi 6.11111 AND WMIG&TIC11lO OF REPORT OR APPUCATION:Source Production and Source Production and Equipment Company Inc.Equipment Company, Inc. application dated March 13, 1989 as supplemented.113 Teal StreetSt. Rose, LA 70087 .o 7I-90564. CON011`1IO1This eeottfdcate is sodo I ontutfI* lieInents of IC cm Pet il. apolable, VW li ocfduon g Ald below.*(a) Packaging(1) Model fso.: SPEC 2-T(2) DescriptionA steel encased, uranium shielded Gamma Ray Projector. Primarycomponents consist of an outer steel shell, internal bracing, depleteduranium shield, and a Zircalloy OS" tube. The contents are securelypositioned in the Zircalloy *SO tube by a source cable locking device andshipping plug. The unit resembles a rectangular box approximately 130long by 4-S/88 high by 4-1/40 wide with a maximum gross weight of 49pounds.(3) DrawingsThe packaging is constructed in accordance with Source Production andEquipment Company Inc. Drawing Nos. 12688-1. Rev. (0); 788-1 Rev. (0);and 788-2 Rev. (05.The packaging may also be as shown in Source Production and EquipmentCompany Drawing No. 1000, Rev (0) provided fabrication was completedprior to June 8, 1989.The overpack is a 12 gallon open head 20 or 22 gauge National MotorFreight Classification 100-G, Item 260 steel drum constructed inaccordance with Source Production and Equipment Company, Inc. DrawingNo. 53189-2 Rev. (0).(b) Contents(1) Type and form of materialIridium 192 as sealed sources which meet the requirements of specialform radioactive material.#4*4#53 SprP
'-ScomonnoNs (contkred) U.S NUCLEAP RE£ULATC '.Page 2 -Certificate No. 9056 -Revision No. 6 -Docket No. 71-9056(2) Maximum quantity of material per package225 curies6. The source must be secured in the shielded position of the packaging by theshipping plug, source assembly, and locking device. The shipping plug and sourceassembly used must be fabricated of materials capable of resisting a 14750F fireenvironment for one-half hour and maintaining their positioning function. Thesource assembly ball stop must engage the locking device. The flexible cable ofthe source assembly and shipping plug must be of;sufficient length and diameter toprovide positive positioni g0 fhetsourice In tbe(gjuided position.7. The nameplates must be 4fricated of materials capablie 6 resisting the fire testof 10 CFR Part 71 and maintaining their legibility. (WB. For transportation'of more than 45 curies per package in private carriage theshipment must belas accordance with 49 CFR 173.441(b). --,.2 Av; ..epackfge bewa9. For transportation of more than 45 curies per package beta common carrier, thepackage must be within a protective overpack as-described and constructed inaccordance with 5(a)(3). * ' / K .--10. The packaging authorized by this certificate is hereby approved for use under thegeneral license provisions of 10 CFR 171.12.11. Expiration date: August 31, 1994. :REFERENCESSource Production and Equipment Company,'Inc. application dated March 13, 1989.Supplements dated: July 6, August 21, and August 28, 1989. -FOR THE U.S. NUCLEAR REGULATORY COMMISSIONCharles E. MacDonald, ChiefTransportation BranchDivision of Safeguardsand Transportation, NMSSDate: FE 189 3 Attachment 3IN 90-24April 10, 1990 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICESInformation Date ofNotice No. Subject Issuance Issued to90-2390-2290-2190-20Improper Installation ofPatel Conduit SealsUnanticipated EquipmentActuations FollowingRestoration of Powerto Rosemount TransmitterTrip UnitsPotential Failure of Motor-Operated Butterfly Valvesto Operate Because ValveSeat Friction was Under-estimatedPersonnel Injuries Resultingfrom Improper Operation ofRadwaste IncineratorsPotential Loss of EffectiveVolume for ContainmentRecirculation Spray atPWR FacilitiesPotential Problems withCrosby Safety Relief ValvesUsed on Diesel GeneratorAir Start Receiver TanksWeight and Center ofGravity Discrepanciesfor Copes-Vulcan ValvesSuppliers of PotentiallyMisrepresented Fasteners4/4/903/23/903/22/903/22/903/14/903/9/903/8/903/7/90All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All NRC licenseeswho process orincinerate radio-active waste.All holders of OLsor CPs for PWRs.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.All holders of OLsor CPs for nuclearpower reactors.90-1990-1890-1789-59,Supp. 2OL = Operating LicenseCP = Construction Permit