ASME N511:2022 pdf download

ASME N511:2022 pdf download.In-Service Testing of Nuclear Air-Treatment, Heating, Ventilating, and Air-Conditioning Systems
1.1 Scope
This Standard covers the requirements for in-service testing of nuclear air-treatment, heating, ventilating, and air-conditioning systems within nuclear facilities.
1.2 Purpose
The purpose of this Standard is toprovidere quirements for in-service testing, the results of which are used to verify that the nuclear air-treatment, heating, ventilating, andair-conditioningsystemsperformtheirintendedfunc- tions.
1.3 Applicability
ThisStandardappliestothein-service testing of nuclear air-treatment, heating, ventilating, and air-conditioning systems that have been designed, built, and accep- tance-tested in accordance with ASME AG-1. Sections of this Standard may be used for technical guidance when testing air-treatment, heating, ventilating, and air-conditioningsystems designed and builtto otherstan- dards.
1.4 Use of This Standard
This Standard provides a basis for the development of test programs and does not include acceptance criteria, except where the results ofone test influence the perfor- mance of other tests. Based on the system design and its function(s), the owner shall develop a test program and acceptance criteria. Nonmandatory Appendices A through D provide addi- tional information and guidance.
1.5 Definitions
These definitions are consistent with the ASME AG-1 Divisions I through IV and supplement those listed in ASME AG-1, Article AA-1000. abnormal incident: any event or condition that may adversely affect the function ofthe nuclear air-treatment, heating, ventilating, and air-conditioning systems. acceptable preconditioning: the alteration, variation, manipulation, or adjustment of the physical condition of a component before in-service testing for the purpose of protecting personnel or equipment or meeting the manufacturer’s recommendations. This may include routine and scheduled maintenance for optimum equipment and system performance. Precondi- tioningforpurposesofpersonnelprotectionorequipment preservation should outweigh the benefits gained by testing only in the as-found condition. This precondi- tioning may be based on the equipment manufacturer’s recommendations or industry-wide operating experience to enhance equipment and personnel safety. This precon- ditioning should be evaluated and documented prior to the in-service test. acceptance test: a test made upon completion of fabrica- tion, installation, repair, or modification ofa unit, compo- nent, or part to verify to the user or owner that the item meets specified performance requirements. adsorbent: a solid ofhigh specific surface area having the ability to attract and concentrate gaseous phase substances on its surface. adsorber: a device or vessel containing adsorbent that is used to remove and hold back substances in a gaseous phase from an air or gas stream. adsorberbank orfilter bank: one or more filters or adsor- bers secured in a single mounting frame, or one or more side-by-sidepanelscontainingpouredorpackedair-treat- ment media, confined within the perimeter of a duct, plenum, or vault cross section, sometimes referred to as a stage.aerosol: a stable suspension ofparticles, solid or liquid, in air or gas. as-foundcondition: the condition ofa componentbetween in-service tests without preconditioning. challenge: to expose a filter, adsorber, or other air-treat- ment device to an aerosol or gas ofknown characteristics underspecifiedconditionsforthepurposeofperformance testing. challenge aerosol: an aerosol used forin-place leaktesting of installed HEPA filter systems. NOTES: (1) AcceptableaerosolliquidmaterialsfortheQ-76ortheQ-107 penetrometer are dicoctylphthalate (DOP), dioctylsebacate (DOS/DEHS), and 4 centistoke polyalphaolefin (PAO). Ifusing a penetrometer with a particle counter, the aerosol material shall be as defined in IEST-RP-CC007, section 4.2.9. (2) The polydisperse aerosol used for in-place leak testing of systems differs in size from the 0.3 μm size DOP aerosol particles used for efficiency testing of individual HEPA filters by manufacturers. For potential substitutes for DOP, reference ASME AG-1, Article TA-2000. challenge gas: a gas of known characteristics used for in- place testing of adsorbers. HEPA filter: a high-efficiency particulate air (HEPA) filter. This is a throwaway, extended-medium dry-type filter with a rigid casing enclosing the full depth of the pleats. The filter shall exhibit a minimum efficiency of 99.97% when tested with an aerosol of 0.3 μm diameter test aerosol particles. in-service test: a test to determine the operational readi- ness of a system or component.