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+ Requirement
Number I
Source Requirement Text
R - Rev iew
A - Analysis
Reference
(1Nhers is this requirement
T • Test Incorporated in the design)
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1025 5.7.1 Fans shall be selected on the basis of detailed system pressure loss calculations, and shall be capable of producing the specified design flow
rates. The system designer shall, in accordance with AMCA 201, prepa re a system characle ristc curve for design and limiting conditions under
which il •e fans wit be re^tilled too erase.
1026 5.7.1 Alf resistances in the system, including clean and di rty component p ressure drops (as well as test pressure differen tial), fuli•open and intermediate
co nt ro l damper positions. duct inlet losses, and losses in ducts, housing inlets and outlets, and fan I nlets and outlets shall be considered in the
estimate of the system characteristics. A set of constant speed fan pe rformance cu rv es, showing the static or total pressu re, corresponding
efficiency, capacity, and braKe horsepower shall be obtained from the fan manufacturer for each fan configuration. Fan inlet and discharge
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configurations, or other system characte ristics, that would adve rsely alter the published fan pe r ormance shall be avoided. Fan size shall be chosen
after performing an analysis of the system characteristic and fan pe rformance cu rv es, conside ri ng all system fa ctors including temperature,
pressure, requi re d airflow and, panicularly for fans operating in pos t-acciden t p ri ma ry containment atmospheres, density and viscosity of the air or
air-steam-entralned water mixture.
1027 5.7.7 Fan selection shall also allow for test conditions in accordance with ASME AG-1, Section TA. The system designer shall Identify the maximum
aLowable di ff
erential
pressure foreach fi lter Dank plus a margin to accommodate filter basing which may occur p ri or to the next su rveillance (typically 25% of the
coincident dirty filter differential pressure). The fan and system characte r istic cu rves shall be included in the system documentation. The fan shall
be selected to operate on the stable po rt ion of Its pressure cu rve under all operating conditions. Provision shall be made in the design to maintain
stable operation under the design flows and va rying pressure range. Inlet vanes, i nlet/outlet damper modulation, variable speed fan cont ro l are
ceritalble le alte rn .., ,.
atives.
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1028 Fan drives shall meet the requirements of ACME AG-1, Section BA.
1C29 5.8.1 integral Horsepower Motors •- General:
Moto rs shall comply w4h and be tested and rated in accordance with applicable requirements of NEMA MG1, and IEEE 112A. Pe rformance snail
be ve rifi ed by either lest or ce rt ification as specified for each requ irement. Rated se rvice factor shat; be a minimum of 1.0 unless specified
1030 5.8.1
otherwise,
Motors shall be sized to supply maximum mechanical load demand without exceeding the rated horsepower under all iderltlfied operating
conditions and to produce the required torque and acceleration as re quired by the driven equipment under the most adverse voltage, frequency and
conditions s eci f.ed and shall be desi gned for the starting sequence specified by the Engineer.
1031 5.6.2 Drives for ESF Systems:
Drives In Enginee red Safety Feature (ESF) systems shall comply with Institute of Elect ri cal and Elect ro nic Engineers (IEEE) 323. In addition,
drives of ESF systems located ; s da xMainmen! show! be qua!if^ed in "
anroRl anre with IEEE 334.
ESF fan drives shall be qualified in accordance with IEEE 344. Motor suppo rts and hange rs shall be designed 10 withstand al! seismic and
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operatinq loads with Y motor in its normal o eratin
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orientation without impairment of o era In
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1032
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Oam ors shall meet retheM viremeof '` ASME ....: AG •t, Se ..a lion ^. DA. .
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1035 7.1 Drawings:
Complete air-cleaning system layout drawings showing the location of housing, ducts, tan dampe rs, and the other exte rn
al co mponents In each of
three mutually perpendicular planes shall be prepa re d prior to the sta rt of erection. Drawings shall show all connections, hangers, and anchors, the
location and joint details for all welds, and the p rocedure speci fication for each weld. The layout drawings shall reference dimension and shop
drawings of components, as applicable. Layout shall be checked for inte rferences with other items to be Installed in the area, and conflicts shall be
resolved before instatlaUOn.
1036 7.2 Erection:
All ducts, housings, fans, dampers, hangers, anchors, and se rvices (electrical, steam, drains, etc.) shall be installed in st ri ct conformance with the
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layout drawings; deviations of more than the design tolerance from the loca t on In any plane from the position shown in the drawings shall be
approved by the system designer or other responsible Engineer, and shall be documenled by'as•built drawings.' Prefabricated duct
subassemblies should be made as large as practicable to minimize field joints and field welding. Housings shall rot be used to suppo rt other
"„ uipmemt of the facility for which it was rot designed: `field runs of pipe, dud, or conduit or other systems of the facility shall not be permitted to
penetrate the housing. Inte rnal components (filters, acsorbers, etc.) shall not be installed until immediately before the system is presented for
testing. and shall not be removed from their canons or crates until they are ready to be Installed. The recommendations for handling and installation
lof
HEPA filters riven in ASME AG-1, Section FC shall be oodles with
Date Printed: 21 .09C-04 Example ASME AGO Compliance Mat ri x Page 1 OD of 110
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