1、 INCH-POUND MIL-PRF-18953C(SH) 14 February 2005 SUPERSEDING MIL-F-18953B(SH) 22 October 1990 PERFORMANCE SPECIFICATION FANS, VANEAXIAL AND TUBEAXIAL, VENTILATION AND AIR CONDITIONING, NAVAL SHIPBOARD This specification is approved for use by the Department of the Navy and is available for use by all
2、 Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers fixed vaneaxial and tubeaxial fans for Naval shipboard use in ventilation and air conditioning systems. 1.2 Classification. Fans are of the following types, sizes, current, voltage and phase, enclos
3、ures, maximum ambient temperature, structure, thermal protection, and quiet bearings as specified (see 6.2): 1.2.1 Types. Types PIN Code A Vaneaxial, fixed, Navy Standard (HI Shock) AA L Tubeaxial, fixed, Navy Standard (HI Shock) LL X-A Vaneaxial, fixed, Navy Standard (Non-Shock, commercial marine m
4、otor) XA X-L Tubeaxial, fixed, Navy Standard (Non-Shock, commercial marine motor) XL Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05Q, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed
5、to commandstandardsnavsea.navy.mil, with the subject line “Document Comment”. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 4140 Provided by IHSNot for ResaleNo reprodu
6、ction or networking permitted without license from IHS-,-,-MIL-PRF-18953C(SH) 1.2.2 Sizes. Types A and X-A vaneaxial fans Types L and X-L tubeaxial fans Fan Size Volume (ft3/min) Fan Total Pressure (inches, wg) PIN Code Fan Size Volume (ft3/min) Fan Total Pressure (inches, wg) PIN Code 250 2.5 00Q1/
7、 450 0.75 00H 660 2.5 00H2/1 1,000 0.50 01W 1 1,030 2.65 01W3/2 1,900 0.58 02W 1 1,500 3.0 01H 3 2,250 0.70 03W 2 2,000 3.4 02W 2 2,600 3.4 02H 3 3,200 3.4 03W 3 3,750 3.5 03H 4 3,220 7.0 04H 5 4,200 3.75 05W 6 6,300 3.65 06W 7 5,200 7.0 07W 8 7,300 3.3 08W 10 8,500 4.2 10W 11 8,700 5.5 11W 12 10,25
8、0 5.0 12W 16 13,200 4.75 16W 17 12,300 6.2 17W 20 18,000 4.85 20W 25 22,000 3.95 25W 28 18,750 6.4 28W 30 25,000 4.2 30W 1/“Q” denotes the fraction “”. 2/“H” denotes the fraction “”. 3/“W” denotes a whole number. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
9、from IHS-,-,-MIL-PRF-18953C(SH) 1.2.3 Current. Type of Current PIN Code Alternating current (a.c.) A Not applicable N 1.2.4 Voltage. Voltage and Phase (frequency of a.c. is 60 Hz) PIN Code 115-volt, single phase a.c. 1 220-volt, 3-phase a.c. 2 440-volt, 3-phase a.c. 4 1.2.5 Enclosures. Enclosures PI
10、N Code Spraytight W Explosion-proof X 1.2.6 Maximum ambient temperature. Ambient Temperature PIN Code 65 C 6 80 C 8 1.2.7 Structure. Structure PIN Code Non-magnetic structure of fan and motor NM Not applicable NA 1.2.8 Thermal protection. Thermal Protection PIN Code Thermal protection is applied TP
11、Not applicable NA 1.2.9 Quiet bearing. Quiet Bearing PIN Code Quiet bearing that meets MIL-B-18731 QB Not applicable NA 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-18953C(SH) 1.3 Part or identifying number (PIN). PINs to be used for fix
12、ed vaneaxial and tubeaxial fans acquired to this specification are created as follows (see 1.2.1 through 1.2.9): M 18953 - XX XXX X X X X XX XX XX Prefix for Military Specification Specification Number Type Size Current Voltage and Phase Enclosures Ambient Temp. Structure Thermal Protection Quiet Be
13、aring 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effo
14、rt has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbo
15、oks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-90l Shock Tests, H.I. (High-I
16、mpact) Shipboard Machinery, Equipment, and Systems, Requirements for MIL-M-17059 Motors, 60-Cycle, Alternating-Current, Fractional H.P. (Shipboard Use) MIL-M-17060 Motors, 60-Hertz, Alternating Current, Integral-Horsepower, Shipboard Use MIL-B-17931 Bearings, Ball, Annular, for Quiet Operation DEPAR
17、TMENT OF DEFENSE STANDARDS MIL-STD-l67-1 Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited) MIL-STD-1399-300 Interface Standard for Shipboard Systems, Electric Power, Alternating Current (Metric) MIL-STD-2142 Magnetic Silencing Characteristics, Mea
18、surement of (Metric) (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and
19、publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation contract. NAVSEA TECHNICAL PUBLICATION S9074-AR-GIB-010/278 Re
20、quirements for Fabrication, Welding and Inspection, Casting Inspection and Repair for Machinery, Piping and Pressure Vessels (Copies of this document are available from Naval Inventory Control Point, 700 Robbins Avenue, Attn: Code 0862 (Cash Sales), Philadelphia, PA 19111 or online at www.nll.navsup
21、.navy.mil.) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-18953C(SH) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these doc
22、uments are those cited in the solicitation or contract. AIR MOVEMENT AND CONTROL ASSOCIATION (AMCA) INTERNATIONAL, INC. AMCA 99-0401 Classification for Spark Resistant Construction AMCA 111 Laboratory Accreditation Program AMCA 210 Laboratory Methods for Testing Fans for Aerodynamic Performance Rati
23、ng (DoD adopted) AMCA 300 Reverberant Room Method for Sound Testing of Fans (DoD adopted) (Copies of these documents are available from the Air Movement and Control Association International, Inc., 30 West University Drive, Arlington Heights, IL 60004 or online at www.amca.org.) AMERICAN NATIONAL ST
24、ANDARDS INSTITUTE (ANSI)/AMERICAN BEARING MANUFACTURERS ASSOCIATION (ABMA) ANSI/ABMA STD-4 Tolerance Definitions and Gaging Practices for Ball and Roller Bearings ANSI/ABMA STD-9 Load Ratings and Fatigue Life For Ball Bearings ANSI/ABMA STD-13 Rolling Bearing Vibration and Noise (Methods of Measurin
25、g) ANSI/ABMA STD-20 Radial Bearings of Ball, Cylindrical Roller and Spherical Roller Types - Metric Design ANSI/ABMA/ISO 3290 Rolling Bearings - Balls - Dimensions and Tolerances (DoD adopted) (Copies of these documents are available from the American Bearing Manufacturers Association, Inc., 2025 M.
26、 St., NW, Suite 800, Washington, D.C. 20036 or online at www.abma.org.) AMERICAN WELDING SOCIETY (AWS) AWS B2.1 Welding Procedure and Performance Qualification, Standard For (DoD adopted) AWS B2.2 Brazing Procedure and Performance Qualification, Standard For (DoD adopted) (Copies of these documents
27、are available from the American Welding Society, 550 NW LeJeune Road, Miami, FL 33216 or online at www.aws.org.) ASTM INTERNATIONAL ASTM B26 Standard Specification for Aluminum-Alloy Sand Castings (DoD adopted) ASTM F1166 Standard Practice for Human Engineering Design for Marine Systems, Equipment a
28、nd Facilities (DoD adopted) (Copies of these documents are available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or online at www.astm.org.) INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE) IEEE STD 45 Recommended Practice for Electric Installations on Sh
29、ipboard (DoD adopted) (Copies of this document are available from the Institute of Electrical and Electronics Engineers, 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331 or online at www.ieee.org.) NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA) NEMA MG 1 Motors and Generators (DoD adopt
30、ed) (Copies of this document are available from the National Electrical Manufacturers Association, 1300 N. 17thSt., Suite 1847, Rosslyn, VA 22209 or online at www.nema.org.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the tex
31、t of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-18953C(SH) 3. REQUIREMENTS 3.1
32、 Qualification. The fans furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). 3.2 Materials. Fan shall be of spark-resistant construction as defined in AMCA 9
33、9-0401 Type B construction. Cast iron, excluding nodular iron, shall not be used in the construction of the fans nor shall cast iron be used in fan motors which are components of Types A and L fans. Materials shall be corrosion resisting or material shall be protected against corrosion after fabrica
34、tion. Material degraded during the fabrication process shall be normalized to restore those properties before assembled in any fan. Selected materials shall be capable of meeting all of the operational and environmental requirements specified herein. Non-metallic materials for the fan casing and imp
35、eller shall be avoided due to fire and smoke concerns. 3.2.1 Hazardous material. Materials for use in the construction of fans shall have no effect on the health of personnel when the materials are used for intended purpose. Regardless of other requirements, materials and parts containing asbestos,
36、cadmium, lithium, mercury, or radioactive material shall not be used. 3.2.2 Fasteners. Material for all bolts, nuts, studs, screws and similar fasteners shall be corrosion-resistant passivated or of a material rendered resistant to corrosion. Self-tapping sheet metal screws shall not be used. Gallin
37、g shall be prevented. Tapped holes shall be reinforced where shearing of thread can occur. 3.2.3 Nonmagnetic construction. When nonmagnetic fan-motor units are specified (see 6.2), all fan parts including the casing, vanes, impeller, impeller bushing, motor mounting, fasteners, washers, conduit box,
38、 and fittings shall be of nonmagnetic material. Nonmagnetic material is defined as a material that has a maximum relative permeability of less than 2.0 after fabrication. 3.2.4 Motor material. Motor material shall conform to the requirements of IEEE STD 45 or NEMA MG 1 for nonmagnetic motors. 3.2.5
39、Dissimilar metals. Fans and components shall not be degraded due to electrolysis. 3.2.6 Faying surfaces. Faying surfaces shall be protected against corrosion. 3.2.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be us
40、ed to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.3 Painting. Equipment and component items shall be painted as specified (see 6.2). If paint requirements are not spe
41、cified, use standard factory finish. 3.4 Welding and allied processes. Surfaces of parts to be welded or brazed shall be free from rust, scale, paint, grease, and other foreign matter. Welding and allied processes shall be performed by personnel certified to AWS B2.1 and B2.2. NAVSEA Technical Publi
42、cation S9074-AR-GIB-010/278 shall be used for guidance. 3.5 Identification plates. Each fan shall be provided with a permanently attached corrosion-resistant identification plate. Attachment methods for the identification plate shall be corrosion-resistant. The identification plate shall contain the
43、 following information as a minimum: a. National stock number b. Manufacturers name, commercial and government entity (CAGE) number, and part number c. PIN code d. Direction of airflow and rotation e. Bearing lubrication The identification plate and a duplicate motor identification plate shall be in
44、stalled on the outside of the fan casing. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-18953C(SH) 3.6 Interchangeability. In no case shall fan parts (excluding motor parts) be physically interchangeable or reversible unless such parts ar
45、e also interchangeable or reversible with regard to function, performance, and strength. 3.7 Operating life. The equipment shall have an operating life of not less than 223,800 hours (equivalent to approximately 30 years of operation). Any part identified as planned replacement parts shall have an o
46、perating life, prior to replacement, of approximately 37,300 hours (equivalent to approximately 5 years of ship operation). 3.8 Human engineering. The fan shall be arranged so as to achieve safe, reliable, and effective performance by the operator and maintenance personnel and to optimize personnel
47、skill requirements. ASTM F1166 shall be utilized as a guideline in applying human engineering design criteria for the fan-motor unit. 3.9 Maintainability. The fan shall be constructed so that: a. Fan impeller shall be mounted on the motor shaft in such a manner that it is removable using commonly av
48、ailable tools. b. Bearings shall be removable using commonly available tools. c. Parts shall be match marked or attached so that reinstallation will be in the same position as originally installed. d. Motor shall be removable using commonly available tools. 3.10 Design requirements. 3.10.1 Aerodynam
49、ic design parameters. The quantities of blades and vanes shall be designed to avoid interacting frequencies within the audible range. The axial distance between blades and vanes shall be designed with minimum noise amplitude in accordance with Table I. The maximum blade tip clearance (radial clearance) shall not exceed of 1 percent of the casing minimum inside diameter. 7 Provided by IHSNot for ResaleNo reproduction or networking perm
