{"data":{"id":"us/10-cfr-34.21","jurisdiction":"us","citation":"10 CFR 34.21","heading":"Limits on external radiation levels from storage containers and source changers.","body":"The maximum exposure rate limits for storage containers and source changers are 2 millisieverts (200 millirem) per hour at any exterior surface, and 0.1 millisieverts (10 millirem) per hour at 1 meter from any exterior surface with the sealed source in the shielded position.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 34—LICENSES FOR INDUSTRIAL RADIOGRAPHY AND RADIATION SAFETY REQUIREMENTS FOR INDUSTRIAL RADIOGRAPHIC OPERATIONS","Subpart C—Equipment"],"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":"4496a49250d3688691ea9793565754ac69ced38191e209b8a6816f36dfb33fe8","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-34.20","next":"us/10-cfr-34.23"},"notice":"GroundRules: Original legal text. Not legal advice."}