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ASME N509
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ASME N509 2002 Edition, 2002 Nuclear Power Plant Air-Cleaning Units and Components
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Description / Abstract:
This Standard covers requirements for the design, construction, and
qualification and acceptance
testing of the air-cleaning units and components which make up
Engineered Safety Feature (ESF) and
other high efficiency air and gas treatment systems used in nuclear
power plants.
Limitations
The Standard does not cover sizing of a complete nuclear air treatment system, redundancy, or single-failure requirements. It applies only to systems which employ particulate filtration, ambient-temperature adsorption, or both, as the principal functional mechanism. It does not apply to condenser off-gas systems. Also, it does not apply to other applications that employ primarily gas storage or holdup, cryogenic adsorption or fractionation, or solvent absorption as the principal method of gas treatment. Nor does the Standard cover requirements for containment isolation valves, recombiners, comfort heating, air-conditioning, or ventilation to achieve ordinary cooling or industrial hygiene objectives. Field acceptance testing of nuclear air-treatment systems is covered in ACME AG-1, Section TA (the primary reference was to ACME N510-1989).
Purpose
The Standard identifies and establishes requirements for filters, adsorbers, moisture separators, air heaters, filter housings, dampers, valves, fans, ducts, and other components of nuclear air-treatment systems for a specific application in a nuclear power plant. The Standard also establishes requirements for operability, maintainability, and testability of systems necessary for the maintenance of system reliability for the design conditions. Qualification and acceptance testing provisions are specified to verify the adequacy of the air-cleaning unit and component design, to verify that components have been properly fabricated and installed, and that the system will perform in accordance with specification requirements.
Limitations
The Standard does not cover sizing of a complete nuclear air treatment system, redundancy, or single-failure requirements. It applies only to systems which employ particulate filtration, ambient-temperature adsorption, or both, as the principal functional mechanism. It does not apply to condenser off-gas systems. Also, it does not apply to other applications that employ primarily gas storage or holdup, cryogenic adsorption or fractionation, or solvent absorption as the principal method of gas treatment. Nor does the Standard cover requirements for containment isolation valves, recombiners, comfort heating, air-conditioning, or ventilation to achieve ordinary cooling or industrial hygiene objectives. Field acceptance testing of nuclear air-treatment systems is covered in ACME AG-1, Section TA (the primary reference was to ACME N510-1989).
Purpose
The Standard identifies and establishes requirements for filters, adsorbers, moisture separators, air heaters, filter housings, dampers, valves, fans, ducts, and other components of nuclear air-treatment systems for a specific application in a nuclear power plant. The Standard also establishes requirements for operability, maintainability, and testability of systems necessary for the maintenance of system reliability for the design conditions. Qualification and acceptance testing provisions are specified to verify the adequacy of the air-cleaning unit and component design, to verify that components have been properly fabricated and installed, and that the system will perform in accordance with specification requirements.