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Fission Products

Fission Products. NOBLE GASES Kr-85m Kr-87 Kr- 88 Xe-133 Xe-135 Xe-138. FISSION PRODUCTS Zr-95 Nb-95 Mo-99 Ce-141 Ce-144 La-140 Ru-103 Ru-106 Rb-88 Sr-89 Sr-90 Sr-91 Sr-92 Cs-134 Cs-137 Cs-138 Ba-139 Ba-140 Ba-141 Tc-99m.

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Fission Products

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  1. HPT001.023 Revision 3 Page 42 of 50 Fission Products NOBLE GASES Kr-85m Kr-87 Kr- 88 Xe-133 Xe-135 Xe-138 FISSION PRODUCTS Zr-95 Nb-95 Mo-99 Ce-141 Ce-144 La-140 Ru-103 Ru-106 Rb-88 Sr-89 Sr-90 Sr-91 Sr-92 Cs-134 Cs-137 Cs-138 Ba-139 Ba-140 Ba-141 Tc-99m RADIOIODINES I-131 I-132 I-133 I-134 I-135 H-3 from ternary fission

  2. HPT001.023 Revision 3 Page 43 of 50 Activation Products ACTIVATED CORROSION PRODUCTS Cr-51 Mn-54 Mn-56 Fe-59 Co-58 Co-60 Cu-64 Zn-65 Zr-95 ACTIVATION PRODUCTS H-3 N-13 N-16 F-18 O-19 Na-24 Cl-38 P-32

  3. HPT001.023 Revision 3 Page 44 of 50 DAC, DACF, %DAC and DAC-hours Derived Air Concentration (DAC) – concentration of a given radionuclide in air, which if breathed by the reference man for a working year of 2000 hours under conditions of light work, results in an intake of one ALI, annual limit on intake. DAC Fraction (DACF) – the fraction of the DAC value that is present. It is calculated by dividing air activity by the limit. %DAC – the percentage of the DAC value that is present. DAC-hour – indicates the amount of exposure. It is calculated by multiplying the DACF or the %DAC by the time in the area.

  4. DACF ACTUAL LIMIT %DAC ACTUAL X 100 LIMIT DAC-hours DACF X hours Exposure DAC-hours X 2.5 mrem/hr HPT001.023 Revision 3 Page 45 of 50 Calculating DACF, %DAC, DAC-hours, and Exposure

  5. HPT001.023 Revision 3 Page 46 of 50 Requirements For Respirator Issue • Medical Clearance – S-3 (S-4 for SCBA) • General Employee Training - RRT010 (HPT0063.002 for SCBA) • Mask Fit Test – Not required for Tyvek hood or bubble hood • Clean Shaven on Sealing Surfaces – Not required for hoods • Corrective Eyewear – if required (Special frames for face masks) • RWP or Industrial Safety Form

  6. HPT001.023 Revision 3 Page 47 of 50 Protection Factors * Sequoyah uses a protection factor of 100 for PAPR.

  7. HPT001.023 Revision 3 Page 48 of 50 Procedures TVAN Standard for Respiratory Protection is SPP-5.10 Browns Ferry uses RCI-3.1 Sequoyah uses RCI-4 Watts Bar uses RCI-107

  8. HPT001.023 Revision 3 Page 49 of 50 Requirements of SPP-5.10 • Certified by NIOSH/MSA • RWP to document entry and specify type of respirator or IS • Valid worker qualifications • Issued from designated location and only to wearer • Test and inspect filters and canisters after each use • Clean, sanitize, survey, and inspect respirators after each use • Periodic whole body counts to evaluate program

  9. HPT001.023 Revision 3 Page 50 of 50 When is Intake Monitoring Required? • Adults likely to receive an in excess of 10% of ALI in one year • Minors likely to receive a committed dose equivalent of 0.100 Rem in one year • Declared pregnant women likely to receive, during the entire pregnancy, a committed effective dose equivalent in excess of 0.100 Rem

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