ASME N511-2007 pdf download.In-Service Testing of Nuclear Air Treatment, Heating, Ventilating, and Air-Conditioning Systems.
1 INTRODUCTION 1.1 Scope This Standard covers the requirements for in-service testing of nuclear safety-related air treatment, heating, ventilating, and air-conditioning systems in nuclear facilities. 1.2 Purpose The purpose of this Standard is to provide require- ments for in-service testing, the results of which are used to verify that the nuclear air treatment, heating, ventilating, and air-conditioning systems perform their intended function. 1.3 Applicability This Standard applies to the in-service testing of nuclear air treatment, heating, ventilating, and air-con- ditioning systems that have been designed, built, and acceptance tested in accordance with ASME AG-1. Sections ofthis Standard may be used for technical guid- ance when testing air treatment, heating, ventilating, and air-conditioningsystems designedand builtto other standards. 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 of one test influence the per- formance 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 C provide additional information and guidance. 1.5 Definitions The definitions provided in this section supplement those listed in ASME AG-1, Article AA-1000. abnormal incident: any event or condition that may adversely affect the function of the nuclear air treatment, heating, ventilating, and air-conditioning systems. acceptance test: a test made upon completion of fabrica- tion, installation, repair, or modification of a unit, com- ponent, or part to verify to the user or owner that the item meets specified requirements.
adsorber: a device or vessel containing adsorbent. adsorber bank or filter bank: one or more filters or adsorb- ers secured in a single mounting frame, or one or more side by side panels containing poured or packed air treatment media, confined within the perimeter of a duct, plenum, or vault cross section, sometimes referred to as a stage. aerosol: a stable suspension of particles, solid or liquid, in air. challenge: to expose a filter, adsorber, or other air treat- ment device to an aerosol or gas of known characteris- tics, under specified conditions, for the purpose of testing. challenge aerosol: an aerosol used for in-place leak testing of installed HEPA filter systems. NOTE: The polydispersed aerosol used for in-place leak testing of systems differs in size from the 0.3 ?m monodisperse DOP aerosol 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 (high-efficiency particulate air filter): a dispos- able, extended media, dry type filter enclosed in a rigid casing that exhibits a minimum efficiency of 99.97% when tested with an essentially monodisperse 0.3 ?m test aerosol. in-service test: a test to determine the operational readi- ness of a system or component. pressure, maximum operating: the maximum pressure the system components will be subjected to while per- forming their function, including the allowable pressure during abnormal operating conditions, that will not physically damage the system or component (e.g., sud- den closure of dampers or registers).
3 GENERAL INSPECTION AND TEST REQUIREMENTS All inspections and tests shall be conducted in accor- dance with the requirements within this Standard and the specific requirements of sections 6 and 8. Activities discussed in this Standard may involve the use of haz- ardous materials, operations, and equipment. This Stan- dard does not purport to address all of the safety requirements associated with their use. The owner’s test program shall establish appropriate safety and health practices and determine the applicability of regulatory requirements. 3.1 Test Instruments A calibration program shall be established in accor- dance with ASME NQA-1 requirements. All permanent and temporary test instruments used in the conduct of tests required by this Standard shall be in calibration. Instrument accuracy shall meet or exceed the require- ments of Table 1. 3.1.1 Range Requirements. The full-scale range of instruments shall be limited as necessary to ensure that the readings are within the accuracy requirements of Table 1. 3.1.2 Instrument Fluctuation. Symmetrical damp- ing devices or averaging techniques may be used to reduce random signal fluctuations. Hydraulic instru- ments may be damped by using gage snubbers or throt- tling valves in instrument lines. 3.1.3 Evaluation Following Test Instrument Loss, Damage, or Calibration Failure. When a test instrument is lost, damaged, or otherwise fails to meet the require- ments of Table 1 during calibration, all test results obtained using the instrument shall be evaluated, dating backto the time ofthe previous calibration. Ifthe evalua- tion does notconfirm that the instrumentmetthe accept- ance criteria for the test(s) in question, the test(s) shall be repeated with calibrated instruments.