{"data":{"id":"us/10-cfr-835.403","jurisdiction":"us","citation":"10 CFR 835.403","heading":"Air monitoring.","body":"(a) Monitoring of airborne radioactivity shall be performed:\n(1) Where an individual is likely to receive an exposure of 40 or more DAC-hours in a year; or\n(2) As necessary to characterize the airborne radioactivity hazard where respiratory protective devices for protection against airborne radionuclides have been prescribed.\n(b) Real-time air monitoring shall be performed as necessary to detect and provide warning of airborne radioactivity concentrations that warrant immediate action to terminate inhalation of airborne radioactive material.","path":["Title 10—Energy","CHAPTER III—DEPARTMENT OF ENERGY","PART 835—OCCUPATIONAL RADIATION PROTECTION","Subpart E—Monitoring of Individuals and Areas"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"72b52a771cc105bf69995575f20fc4a7738de1b09511aa8ec9fae0a5d7fed97a","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-835.402","next":"us/10-cfr-835.404"},"notice":"GroundRules: Original legal text. Not legal advice."}