PART 53—HEATING BOILERS
Subparts
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53.01
Subpart 53.01—General Requirements Sections 53.01-1–53.01-10 -
53.05
Subpart 53.05—Pressure Relieving Devices (Article 4) Sections 53.05-1–53.05-5 -
53.10
Subpart 53.10—Tests, Inspection, Stamping, and Reporting (Article 5) Sections 53.10-1–53.10-15 -
53.12
Subpart 53.12—Instruments, Fittings, and Controls (Article 6) Section 53.12-1