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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 46
Chapter I
Part 53 - PART 53—HEATING BOILERS
Subpart 53.01 [§ 53.01-1 - § 53.01-10] - Subpart 53.01—General Requirements
Subpart 53.05 [§ 53.05-1 - § 53.05-5] - Subpart 53.05—Pressure Relieving Devices (Article 4)
Subpart 53.10 [§ 53.10-1 - § 53.10-15] - Subpart 53.10—Tests, Inspection, Stamping, and Reporting (Article 5)
Subpart 53.12 [§ 53.12-1 - § 53.12-1] - Subpart 53.12—Instruments, Fittings, and Controls (Article 6)
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