HVAC(Heating, Ventilation, and Air Conditioning) Air Cleaning Unit Product Description: HI AIR KOREA (HAK) Air Cleaning Unit is designed to operate optimally in the harsh environment of nuclear power plants. HAK Air Cleaning Unit is specially constructed to provide clean air by removing radioactive dust in NPPs considering size, efficiency, reliability, and maintainability. The unit is composed of a moisture separator, heating coil, pre-filter, HEPA filter, adsorber, post-filter and fan/motor. The unit is developed in close cooperation with major customers and is able to meet the most demanding requirements. Specification: • Casing - Housings are made of painted carbon steel of minimum 7-gauge thickness - Each section shall have enough strength to meet the specified design loading including seismic acceleration • Base frame - The base frame is made of carbon steel - Rigid enough to support all components during shipping, lifting and operation - Spaces between the frame are also considered for installation of drain piping • Moisture seperator - Moisture separators are designed, constructed, and tested in accordance with Section FA of ASME AG-1 and ASME N509, Paragraph 5.4 - Removing at least 99 % by weight of the entrained moisture in an airstream containing approximately 1.5 to 2 lb of entrained water per 1,000 cu ft and by a count of 5 of 10 μm diameter droplets • Electric heating coil - Electric air heaters are designed, constructed, and tested in accordance with Section CA of ASME AG-1 and ASME N509, Paragraph 5.5 - Elements have 80 % nickel and 20 % chromium resistance wire centered in a metal sheath and insulated from the sheath by magnesium-oxide refractory - H eating coils are rated for operating at 480Vac, 60Hz, 3-phase • Pre-filter - The pre-filters are designed, constructed, and tested in accordance with Section FB of ASME AG-1 and ASME N509, Paragraph 5.3 - The pre-filters average atmospheric dust spot efficiency of at least 90 %, when tested in accordance with ASHRAE 52.1 or ASHRAE 52.2 - The filter is replaceable, extended media, dry-type - Pre-filter is UL 900 classified • HEPA Filter and post-filter - The HEPA filters and post filters are of the same construction and designed, constructed, and tested in accordance with Section FC of ASME AG-1 and ASME N509, Paragraph 5.3 - HEPA filters and post filters shall satisfy the requirements of UL-586 - HEPA filters and post filters are 24 x 24 x 11 1/2(nominal size) inches with a minimum rated airflow of 1,500 scfm(2,000 scfm recommended) and clean pressure drop of less than 1.3 in. WG • Adsorber - Adsorber is designed, constructed and tested in accordance with Section FE of ASME AG-1, Paragraph 5.2 - Adsorber banks are arranged in accordance with Section HA of ASME AG-1 and Section 5.0 of ASME N509 - Adsorber cells are Type III and meet the requirements of Section FE of ASME AG-1, ASME N509, Paragraph 5.2 - Adsorber cells meet the requirements of U.S. NRC RG 1.140 - Adsorbent is made of activated carbon and is qualified in accordance with Section FF of ASME AG-1 • Fan - Centrifugal type - Double width double inlet - V-belt driven, complete with fan belt guard • Motor - Premium efficiency - Cast iron casing - IP 54/55 protection - Power supply: 480VAC, 60Hz, 3-phase 041 KHNP-KNP BUSINESS CATALOGUE
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