. ~ . _ . - . _ . _ _ - . - -. ....- - .---.-. - . .-- _ . - . - . - - 7/-96C7 ; i !. , t . 4 r !O1 ( i : i I | SAFETY ANALYSIS FEPORT i TECH / OPS, INC. , e MODEL AI 520 I ! ! TYPE B(U) PACKAGE ' , USA /9007/B(U) s ! , ! ' N 9 - v - -. k- ,*^1 . ,~ -tg ! pg i 1 .c ~ ( 4.S'bi' gf% {.y | - ' | h ' sn' / | ,,J' i R * Revision 0 , 16 September 1985 j | | | I I b i I ' ! i. ! i | l | . i O 8511060370 851007 , PDR ADOCK 07109007PM < C hY | . _ _ _ . - - . _ _ . _ _ _ _ , . _ . - - . , . _ _ _ . _ _ _ _ __,_ , , _ ,,._,._.,m.- 3.0 GsDexD1 JDf91satiDD 1.1 LD%19&ustiDD () Tech / Ops, Inc. Model AI 520 is designed for use as a radio- ! graphic exposure device and a transport package for Type D quantities of radioactive material in special form. The . Model AI 520 conforms to the criteria for Type B(U) pack- | aging in accordance with le CFR 71 and IAEA Safety Series No. 6, 1973 Revised Edition (as amended). 1.2 EDGhagt DgD9115%iDD 1.2.1 EashagiD9 ; The model AI 520 is 273 millimeters (10.75 inches) long, 133 millimeters (5.25 inches) wide, and 162 millimeters (6.38 inches) high. The packaging incorporates a handle which extends 38 millimeters ( 1.50 inches) from the top surface and is 209 millimeters (8.25 inches) long. The total mass of the package is 18 kilograms (40 pounds) . The radioactive material is sealed in a source capsule which conforms to the requirements for special form radioactive material. This source capsule is installed onto a source holder assembly. The source holder assemblies used in conjunction with the Model AI 520 are listed in the appendix. The source holder assembly is housed in an 'S' shaped () titanium source tube. The source tube has an outside diameter of 11.8 millimeters (0.465 inch) and an inside diameter of 10.9 millimeters (0.430 inch). One end of the source tube is enclosed by means of a shipping plug that fastens onto a threaded fitting that is welded to the front - end plate. The shipping plug is drilled to provide a means for attaching tamper-proof seal wire during transport. The other end of the source tube is enclosed by means of the lock box assembly which is welded to the rear plate of the r device. A brass plug is attached to the threaded fitting on the lock box. This brass plug is drilled to provide a means for attaching a tamper-proof seal wire during trans- port. The locking assembly is used to secure the radioac- tive source and source holder assembly in the shielded position during transport. The source tube is surrounded by uranium metal as shielding material. The uranium shielding is cast in place around the " source tube. The mass of the uranium shield is 12.3 kilo- grams (27 pounds) . 1-1 Revision 0 16 September 1985 . 4 . - - - - , - ~, ,.n., .,-n,---. ,e, , , ~ . - - . , - , , . , - ~ ,- - - - - - , - - - n,-.-,. , + , , ,,-,-,,-,..,n.,., . n , . - - . ._ . - _ _ _ _ _ - . - . .. _ - _ - _ . - _ _ _ _ - . d The uranium chie'Id is encased in a type 304 stainless steel housing. The steel housing is 3.2 millimeters (0.125 4 inches) thick. 4 O \- / The outer packaging is designed to avoid the collection and ' retention of water. The package has a smooth, unpainted . ' stainless steel finish to provide for easy decontamination. , The radioactive material is sealed inside a stainless steel 4 source capsule. This capsule acts as the containment vessel for the radioactive material. < 1.2.2 Opgzatippal Egagyxgg The source holder assembly is secured in the proper shielded , i With the ' i storage position by means of the locking assembly. source holder assembly in the proper shielded storage posi- tion, a cap is installed over the source holder assembly and attached to the lock box. This cap is seal wired to prevent inadvertent loosening. Inserting the shipping plug will - insure that the -source holder assembly is in the proper shielded storage position. The shipping plug is also seal | ! wired to insure against unauthorized tampering or removal. i 1.2.3 CpoggDts of gbg Enchagg , The Model AI 520 is designed for the transport of iridium- 192 in quantities up to 120 curies in Tech / ops source assem- The source capsule used with blies listed in the appendix. ' , for ; each of these source assemblies satisfies the criteria ' special form radioactive material in accordance with le CFR 71 and IAEA Safety Series No. 6, 1973 Revised Edition (as . i amended). I l 1 i ' ! : i . i l * ! . i ~ 1-2 Revision B ! 16 September 1985 i "Y , . 4 i i f _ _ __ _ . , . , _ , . _ , _ . , _ . , __, , _ _ _ . _ , _ . _ _ ._. _ _ . _ . _.__ _ _ __.__ -___ _._._ __ _ - - __ _ . _ _ .._ __ _ . ._ - -_____ , ! I ' l- 1 i i i 1 1.3 AFF M DIE Drawing AI52090 Sheets 1 through 4 Drawing AI52091 Sheets 1 through 2 i Drawing 42402-1 . Drawing 42402-4 - ; 4 : . <. ' I i i L i i ! | i i t , 1 i h [ 1, . ! - i i : > t : i @ ! ! ! | ! , . L , . ! I - , | I , . 1 ! l ! i i ' | | | ' r I b 1-3 Revision 8 | 16 September 1985 ; ! ! @ . h -- . , . - , , . _ , - , . - . - - - - - - - , . _ - , - . - _ . - . _ . - - - - . - - - - -. w- 9m ' ,I g3 i a. o - e . | 4 ' lu -~ ' a" ; L,a . 8 | d h- QO , f (Q J c - \ ._ * ~ . .I ~ . W , ' ; . s J , . 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Tech Ops RADIATION PRODUCTS DIVISION ..WO T)1)( J0$04 9T7TL (REF) SURt.INGTON, MA 01803 ' FWWH 2, J DW o TITLE r ' <- , =.r=r_. - | NAVEREE 4 W9f .x s / , paceto sv .xx i / "" * g ctAssirscArion sin DWo. No. IEV. -- m. A AI52091 ~ ! rn.cTions A ) scus # ISHEET / OF 2 R EY. DATE DESCRIPTION | | O l l l MA3ENTA LOC /7ED '.T1 EODY ND'' ,TOF PRG:'.CTOR - / , x ; w'can> j - CAUTl6N g h STAY g 'ACKGROUND-B O ' .