Table 8. CASTLE Maximum Permissible Limits for radiation expasure4. Personne] Skin 0.001 R/hr (about 1,000 CPM) 30 rep (8) for the operational Hands period Clothing Outer clothing 0.007 R/hr Under clothing 0.002 R/hr Vehicles and equipment Vehicles, interior surfaces 0.007 R/hr (B and y) Vehicles, exterior surfaces 0.007 R/hr (y only measured at 5 to 6 inches; 13 to 15 cm) Ships and boats, fixed alpha 2,500 DPM/150 cm2 for enclosed areas 5,000 DPM/150 cm2 for open surfaces Ships and boats, final clearance 0.015 R/day (= 0.0006 R/hr) (no a) Aircraft, cloud tracking 3.0 R/hr Aircraft, occupied section 0.007 R/hr Respirators, interior surfaces 0.002 R/hr Air Particles smaller than 5 microns 10-6 pCi/cc (8 and y 24-hr average) Particles larger than 5 microns 10-4 wCi/cc (8 and y 24-hr average) Total 5 x 10-12 uci/ce (a only) Water (potable) 5 x 10-3 yCi/ec (8 and y calculated at 3 days after burst) 10-7 wCi/ec (a only) Note: The acronyms CPM, rep, and DPM are defined in the glossary (Appendix B). Source: Reference 19, Annex I.