ML19305B665
| ML19305B665 | |
| Person / Time | |
|---|---|
| Site: | Framatome ANP Richland, 07701979 |
| Issue date: | 02/29/1980 |
| From: | SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER |
| To: | |
| Shared Package | |
| ML19305B652 | List: |
| References | |
| NUDOCS 8003200049 | |
| Download: ML19305B665 (17) | |
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SUMMARY
(1977-1979) OCCUPATIONAL RADIATION EXPOSURES EXXON NUCLEAR COMPANY, INC. RICHLAND, WASHING 10N FUEL FABRICATION PLANT (LICENSE NO. SNM-1227) (NRC DOCKET fi0. 70-1257) FEBRUARY 1980 I l 8 0 03 20 Wp-
i TABLE I 1977EXTERNALRADIATIONEXPOSURES*(WHOLEB0DY, PENETRATING) Group Calendar Quarter Annual i 1st 2nd 3rd 4th i Ave. Max. Ave. Max. Ave. Max. Ave. Max. Ave. Max. UF -UC Conversion & Scrap Rkcov$ryOperations 0.05 .0.11 0.13(2) 0.37(I) 0.18(2) 0.40 0.23 0.50 U0 Pellet Production 0.07 0.16 0.11 0.20 2 U0 Fuel Rod Handling 0.03 0.10 0.08 0.19 0.11 .0.18 2 Mixed 0xide & Specialty Fuels Operations 0.13 0.28 1 0.07 0.11 Engineering Lab. Operations Quality Control (Includ-ing Analytical Labora-tories) 0.03 0.09 0.06 0.22 0.04 0.16 0.02 0.04 0.07 0.34 0.04 0.25 Maintenance i i l (*) Expressed in rems. i. (1) Dosimeter (or holder) contaminated. 1 i (2) Includes data recorded from contaminated dosimeter (or holder). b I
TABLE II i 1978 EXTERNAL RADIATION EXPOSURES * (Wit 0LE BODY, PENETRATING) i i Group Calendar Quarter Annual 1st 2nd 3rd 4th Ave. Max. Ave. Max. Ave. Max. Ave. Max. Ave. Max. II)! UF -UO Conversion 1 Scrap 0.22(2) 1.0l Rhcovkry Operations 0.04 0.06 0.09 0.14 0.06 0.13 0.06 0.07 III U0 Pellet Production 0.06 0.07 0.11 0.16 0.25(2) 1,30 2 J 0.11 0.32 00 Fuel Rod Handling 0.03 0.07 0.04 0.06 2 Mixed Oxide & Specialty j Fuels Operations 0.14 0.28 0.09 0.17 Engineering Lab. Operations Quality Control (Includ-ing Analytical Labora-tories) 0.05 0.22 0.05 0.15 0.04 0.06 0.05 0.15 0.15 0.35 0.08 0.23 Maintenance r (*) Expressed in rems. (1) Dosimeter (or holder) contaminated. (2) Includes data recorded from contaminated dosimeter (or holder). 3 e
i TABLE III l 1979 EXTERNAL RADIATION EXPOSURES * (Wit 0LE BODY, PENETRATING) t i Group Calendar Quarter Annual 1st 2nd 3rd 4th Ave. Max. Ave. Max. Kve. Max. Ave. Max. -Ave. Max. UF -UO Conversion & Scrap Rhcov$ryOperations 0.14 0.31 0.11 0.17 0.10 0.16 0.11 0.23 0.37 0.67 l t UO Pellet Production 0.16 0.37 0.15 0.28 0.11 0.23 0.13 0.25 0.40 1.12 2 U3 Fuel Rod llandling 0.13 0.37 0.10 0.21 0.08 0.17 0.09 0.32 0.29 0.88 2 Mixed 0xide & Specialty Fuels Operations 0.10 0.15 0.08 0.12 0.12 0.30 0.08 0.12 0.24 0.45 i 0.16 0.23 Engineering Lab. Operations Quality Control (Including l, Anslytical Laboratories) 0.12 0.29 0.10 0.18 '0.08 0.19 0.08 0.20 0.21 0.74 0.12 0.26 Maintenance (*) Expressed in rems. (1) Dosimeter (or holder) contaminated. (2) Includes data recorded from contaminated dosimeter (or holder).
F TABLE IV I*) 1977 ROOM AIR CONCENTRATIONS OF RADI0 ACTIVE MATERIALS 1 Facilities Calendar Quaiter j lst 2nd 3rd 4th Ave. Max. Ave. Max. Ave. Max. Ave. Max. UF -00 Conversion & Scrap i Rhcov$ryAreas(U) 0.2 5 0.3 55 0.2 19 < 0.1 4 l f UO Pellet Areas (U) <0.1 1 < 0.1 5 < 0.1 2 <0.1 1 2 1 4 UO Fuel Rod Handling -{ Aheas(U) <0.1 0.2 <0.1 0.5 <0.1 <0.1 <0.1 < 0.1 Specialty UO Fuels 2 Fabrication (U) <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 Engineering Lab. Op. Fac. (U) <0.1 <0.1 <0.1 0.3 <0.1 <0.1 <0.1 <0.1 l Analytical Laboratories (U) <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 < 0.1 - i Pu0 Process Equipment & St$rageAreas(Pu) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 i, (*) Expressed as multiples of 10-10 Ci/mt., and do not account for respiratory protection equipment used by personnel.
TABLE V 1978 ROOM AIR C0fiCENTRATIONS OF RADI0 ACTIVE MATERIALS (*) L 4 Facilities Calendar Quarter 1st 2nd 3rd 4th Ave. tia x. Ave. Max. Ave. Max. Ave. Max. UF -U0, Conversion & Scrap 6 Recovbry Areas (U) <0.1 7 0.1 38 0.2 38 0.4 56 f UO Pellet Areas (U) <0.1 28 <0.1 2 <0.1 3 0.1 1 2 i UO Fuel Rod Handling Afeas(U) <0.1 <0.1 < 0.1 0.2 <0.1 <0.1 <0.1 < 0.1 Specialty U0 Fuel s 2 Fabrication (U) <0.1 0.3 <0.1 0.1 <0.1 0.2 <0.1 1 Engineering Lab. Op. Fac. (U) < 0.1 <0.1 <0.1 < 0.1 <0.1 <0.1 <0.1 <0.1 Analytical Laboratories (U) <0.1 <0.1 <0.1 <0.1 <0.1 < 0.1 <0.1 < 0.1 Pu0 Process Equipment & 9 Sthrage Areas (Pu) <0.001 0.001 <0.001 <0.001 <0.001 <0.001 <0.001 < 0.001 -10 (*) Expressed as multiples of 10 Ci/mt, and do not account for respiratory protection equipment used by personnel. W 1
TABLE VI I*) 1979 ROOM AIR CONCENTRATIONS OF RADI0 ACTIVE MATERIALS Facilities Calendar Quarter 1st 2nd 3rd 4th Ave. Max. Ave. Max. Ave. Max. Ave. Max. e t UF -UO Conversion & Scrap Rhcov$ry Areas (U) 0.3 170 0.3 59 0.2 55 0.2 180 i 00 Pellet Areas (U) 0.2 8 0.1 8 0.1 40 0.1 2.2 2 UO, Fuel Rod Handling APeas (U) <0.1 0.1 <0.1 0.4 <0.1 0.2 <0.1 0.2 i r Specialty U0 Fuels 2 Fabrication (U) <0.1 <0.1 <0.1 0.2 <0.1 0.6 <0.1 0.5 Engineering Lab. Op. Fac. (U) <0.1 <0.1 <G.1 0.6 <0.1 <0.1 <0.1 0.1 Analytical Laboratories (U) <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 pug Process Equipment & 7 St5 rage Areas (Pu) <0.001 < 0. 001 <0. 001 <0.001 <0.001 <0.001 <0.001 <0.001 i i a -10 (*) Expressed as multiples of 10 Ci/mt, and do not account-for respiratory protection equipment used by personnel, i i )
{ TABLE VII 1977 URINARY URANIUM CONCENTRATIONS (pg/t) i Calendar Quarter Group 1st 2nd 3rd 4th i i Ave. Max. Ave. Max. Ave. Max. Ave. Max. l-UF -U0 Conversion & Scrap 6 p Recovery Operations < 40 495 < 25 97 < 33 466 < 13 28 00 Pellet. Production < 15 30 < 15 47 < 11 13 < 11 19 2 \\ U0 Fuel Rod Handling < 13 20 < 11 24 < 11 23 < 10 < 10 2 Mixed Oxide & Specialty Fuels Operations < 10 < 10 < 12 19 < 20 48 < 10 < 10 i Engineering Lab. Operations < 10 < 10 < 11 15 < 10 < 10 < 10 < 10 1 .b Quality Control (Includ-l ing Analytical Labora-l tories) < 16 32 < 12 31 < 10 12 < 10 < 10 Maintenance < 15 43 < 12 40 < 11 29 < 14 22 10 pg/t is the measurement sensitivity limit used. t T
~ i TABLE VIII 1978 URIflARY URAtlIUM CONCENTRATIONS (pg/t) Group Calendar Quarter l 1st 2nd 3rd 4th Ave. Max. Ave. Max. Ave. Max. Ave. Max. UF -UO Conversion & Scrap 6 7 Recovery Operations < 18 45 < 31 763 < 28 140 < 21 152 00 Pellet Production < 12 27 < 14 71 < 12 37 < 12 38 2 11 15 < 11 18 < 10 < 10 U0 Fuel Rod Handling < 16 37 c 2 Mixed 0xide & Specialty Fuels Operations < 10 < 10 < 10 < 10 < 13 24 < 10 < 10 Engineering Lab. Operations < 10 < 10 < 10 < 10 < 10 < 10 < 10 < 10 t Quality Control (Includ-ing Analytical Labora-tories) < 10 13 < 10 17 < 10 < 10 < 17 78 Maintenance < 10 15 < 10 25 < 11 24 < 11 23 10 pg/t is the measurement sensitivity limit used.
i< TABLE IX 1979 URINARY URANIUM CONCENTRATIONS (99/1)* Group Calendar Quarter 1st 2nd 3rd 4th l Ave. Max. Ave. Max. Ave. Max. Ave. Max. i UF -U0 Conversion & Scrap Rhcov$ry Operations <13 135 <13 73 <13 215 <12 62 U0 Pellet Production <11 20 <10 13 <10 13 <11 24 2 i 00 Fuel Rod llandling <11 36 <10 15 <10 <10 <10 13 2 Mixed 0xide & Specialty Fuels Operations <10 <10 <10 <10 <10 <10 <10 <10 4 Engineering Lab. Operations <ll 11 <10 <10 <10 <10 <10 <10 i Quality Control (Including Analytical Laboratories) <11 16 <11 19 <11 15 <10 <10 Maintenance <12 24 <11 21 <ll 42 <11 19 f 4 10 pg/t is the measurement sensitivity limit used.
j TABLE X 1977 ROUTINE IN-VIVO EXAMINATION RESULTS I*) I*) Max. Positive No. of Employees Percent of Ave. of Positive Group Examined Results Positive Results Resul t Uf -UO Conversion & l ShrapRecoveryOperations 22 45 55 75 i UO Pellet Production 18 33 50 70 2 U0 Fuel Rod llandling 37 24 50 82 2 Mixed Oxide & Specialty fuels Operations 4 0 N.A. N.A. 4 l Engineering Lab. Operations 4 0 N.A. N.A. Quality Control (Including Analytical Laboratories) 38 26 55 87 i Maintenance 59 24 55 90 liealth Physics Technicians 6 17 55 55 i Engineering 5 20 50 50 (*) Expressed in 99 of U-235. }
i f TABLE XI 1978 ROUTINE Ift-VIVO EXAltINATION RESULTS i I*) I*) Max. Positive No. of Employees Percent of Ave. of Positive Group Examined Results Positive Resul ts Result 1 UF -U0 Conversion & III II) Skrap Recovery Operations 21 38 62 92 2 II) 77 UO Pellet Production 20 35 60 2 i 00 fuel Rod Handling 15 7 37 37 2 I Mixed 0xide & Specialty Fuels Operations 4 0 N.A. N.A. j Engineering Lab. Operations 0 N.A. fl. A. N.A. l Quality Control (Including Analytical Laboratories) 23 13 50 65 II) 97 liaintenance 66 20 47 Ilealth Physics Technicians 3 33 70 70 Engineering 2 0 ft. A. N.A. I (*) Expressed in pg of U-235. (1) Includes data obtained on employees with indication of possible low-leve' external contamination, e a
i 4 TABLE XII 1979 ROUTINE IN-VIVO EXAtlINATION RESULTS I*) Max.' Positive (*) No. of Employees Percent of Ave, of Positive Group Examined Results Positive Results Result i-UF -U0, Conversion & Scrap g Recovbry Operations 52 29 54 92 UO Pellet Production 57 18 55 79 2 U0 Fuel Rod Handling 35 20 49 60 2 Mixed Oxide & Specialty Fuels Operations 11 18 57 69 Engineering Lab. Operations 3 0 N.A. N.A. Quality Control (Including Analytical Laboratories) 29 14 49 61 Maintenance 73 10 47 57 Ilealth Physics Technicians 8 13 37 37 Engineering 8 0 N.A. N.A. (*) Expressed in pg of U-235.
TABLE XIII Equipment & Facility Modifications (1978-1979) 1. Modified the offgas plenum assemblies of the UF -UO2 calciners, 6 installed superior heaters on the offgas plenum assemblies, and installed secondary offgas systems to minimize plugging of the offgas ducts and subsequent pressurization of the calciners. 2. Installed steam heated control valves and super-heaters on UF6 gas transfer lines to minimize plugging of these lines, %.J as to reduce the frequency of gas line cleanout and associated releases to room air. Con w sion 3. Modified process tank overflow piping in the UF -UO2 6 Area to minimize floor contamination due to tank overfilling. Conversion area and 4. Upgraded liquid piping systems in the UF -UO2 6 related facilities with welded fittings where possible in order to mir.imize contamination of unenclosed surfaces due to leaks. Conversion areas to 5. Installed utility hoods in the two UF -UO2 6 accommcdate the cleanout of vacuum cleaners and the cleanup of small pieces of equipment, as well as for housing partical size determination activities. 6. Installed ultrasonic cleaning units in the utility hoods mentioned in item no. 5 to allow centrifuge bowls to be cleaned within those hoods rather than at unenclosed workbenches. Conversion area to 7. Relocated the steam-generator from the UF -UO2 6 a satellita building in order to eliminate the need to enter the Contamination Control Area to perform maintenance on the unit.
,m ~ . 8. Replaced the semi-open U02 powder blendir; station with a closed system empicying a vacuum transfer feature. 9. Replaced worn off-line UO2 powder preparation equipment with new and improved equipment with improved containment features.
- 10. Improved containment features of pellet presses, UO2 powder
- preparation hoods, and installed additional hoods to enclose activities creating airborne contamination problems.
- 11. Improved containment features of pellet drying enclosures and pellet grinder water recirculation / sludge collection system.
- 12. Diverted air flows frem electric motor fans away from sources of contaimination.
- 13. Modified changerooms to improve control of contamination result.ng from handling and accumulation of contaminated protective clothing.
NOTE: Approximately $200,000 were invested in the above listed equipment and facility modification. -w.s --w. ..-~.v,-. ._%.4 -6 .-e s.. - - a,eee,e wemer .,,+<ww g. aw-co,.-y,
TABLE XIV Additional Administrative Controls 1. Increased emphasis on contamination control and cleanup by ENC management, principally through routine and special training sessions. 2. Increased responsibility and authority of the Radiological Safety Supervisor. 3. Expanded airborne contamination air monitoring program to include " equipment monitoring"; e.g., placing air samples at locations on equipment much closer than is representative of personnel exposures, as well as at locations where personnel do not work, in order to provide the earliest possible warning of developing problems. 4. Respiratory protection equipment is required for personnel working -in any of the following conditions: a) The determined air concentration is > 5x10-II pCi/ml; b) During enrichment cleanout of equipment; c) As a precautionary measure when performing work where the potential exists for release of airborne contamination, or where uncertain or changing conditions exist; d) Whenever specified by the Radiological Safety component (Health PhysicsTechnicians). 5. Elimination, where possible, of equipment cleanouts between campaigns of different enrichments.
.+. .e TABLE XV Facility Modifications Budgeted for 1980 Approximately $750,000 has been included in ENC's 1980 capital equipment budget for facility modifications related, in various degrees, to control of room air contamination; specific items include the following: Powder Storage 1. Installation of an exhaust air system in the UO2 addition of the UO building; 2 2. Installation of an exhaust air system in the Tank Gallery of the UF -UO Conversion area; 6 2 3. Rearrangement and upgrading of the exhaust air system in the building to provide UO Powder / Pellet Production area of the UO2 2 improved local exhaust and close-capture features, improved con-tainment, and improved directional air flow patterns; 4. Rearrangment of changerooms and associated HVAC systems in the UO building; 2 5. Installation of a local exhaust air system in the UF -UO Conversion 6 2 Line No. 2 Vaporization room; Conversion Line No. 2 6. Replacement of the scrubber in the UF -U02 6 process exhaust with superior unit with greater capacity. e g -9 w-y 4 w- .sy w}}