ASME Stamps

Power Boilers - Section I
	S	Power Boilers
	A	Power Boiler Assemblies
	E	Electric Boilers
	M	Miniature Boilers
	PP	Pressure Piping
	V**	Power Boiler Safety Valves
Heating Boilers - Section IV
	H*	Cast Iron Heating Boilers
	H	Heating Boilers, other
	HLW	Lined Potable Water Heaters
	HV**	Heating Boilers Safety Valves
Pressure Vessels - Section VIII Division 1
	U	Pressure Vessels
	UM*	Miniature Vessels
	UV**	Pressure Vessels Safety Valves
	UD**	Pressure Vessels Rupture Discs
Pressure Vessels - Section VIII Division 2
	U2	Alternative Rules for Pressure Vessels
Pressure Vessels - Section VIII Division 3
	U3	High Pressure Vessels
	UV3**	Safety Valves for High Pressure Vessels
Reinforced Plastic Vessels - Section X
	RP	Fiber-Reinforced Plastic Pressure Vessels
Transport Tanks - Section XII
	T	Transport Tanks
	TV	Tranport Tanks Safety Valves
	TD**	Transport Tanks Pressure Relief Devices
Nuclear Stamps
	N	Nuclear Components
	NPT	Nuclear Partials
	NA	Nuclear Installation and Shop Assembly
	NV	Nuclear Safety and Safety Relief Valves
	N3	Storage and Transport Containment of Nuclear Fuel
Nuclear Certificates of Accreditation
	NS	Nuclear Supports
	QSC	Material Organization
National Board Inspection Code
	R	Repair and Alteration
	VR	Repair of Safety Valves
* Components not subject to Authorized Inspection, annual audit by the AIA ** Components not subject to Authorized Inspection, triennial audit by ASME