ASTM F998 - 12

    Standard Specification for Centrifugal Pump, Shipboard Use

    Active Standard ASTM F998 | Developed by Subcommittee: F25.11

    Book of Standards Volume: 01.07


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    Abstract

    This specification covers the requirements applicable to the design and construction of three classes of centrifugal pump (Class 1, Class 2, and Class 3) for shipboard application. When selecting material combinations, the conditions under which the various materials interact with each other shall be taken into consideration as well as the use of nonmetallic (composite) pump components where the use of that material can benefit the operation and maintenance of the pump. The requirements for the following are detailed: (1) pump design and construction, (2) pump operation (at or near the best efficiency point), (3) motor power ratings, (4) pitch and roll conditions, (5) horizontal pump and driver mounting, (6) vertical pump support, (7) bedplates, (8) pump couplings, (9) guards, (10) pumps with face-mounted motors, (11) shaft alignment, and (12) indication of direction of rotation. Pump design requirements for inlet and outlet connections, casings, radial and thrust bearings, journal and thrust bearings, rolling element bearings, mechanical seals, separate pressure boundary parts, and screw threads are specified. Requirements for paintings and coatings, equipment identification plates, and testing such as hydrostatic, mechanical run, performance, net positive suction head, vibration, and acoustic tests are also specified.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    Significance and Use

    1. Scope

    1.1 This specification covers the requirements applicable to the design and construction of centrifugal pumps for shipboard application. The three classes of service covered by this specification are as follows:

    1.1.1 Class 1Freshwater,

    1.1.2 Class 2Seawater, and

    1.1.3 Class 3Hydrocarbon pumps (less than 1500 SSU).

    1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A36/A36M Specification for Carbon Structural Steel

    A193/A193M Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

    A194/A194M Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

    A276 Specification for Stainless Steel Bars and Shapes

    A494/A494M Specification for Castings, Nickel and Nickel Alloy

    A582/A582M Specification for Free-Machining Stainless Steel Bars

    A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

    A747/A747M Specification for Steel Castings, Stainless, Precipitation Hardening

    A890/A890M Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

    A995/A995M Specification for Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts

    B148 Specification for Aluminum-Bronze Sand Castings

    B164 Specification for Nickel-Copper Alloy Rod, Bar, and Wire

    B271 Specification for Copper-Base Alloy Centrifugal Castings

    B369 Specification for Copper-Nickel Alloy Castings

    B505/B505M Specification for Copper Alloy Continuous Castings

    B584 Specification for Copper Alloy Sand Castings for General Applications

    F468 Specification for Nonferrous Bolts, Hex Cap Screws, and Studs for General Use

    F1511 Specification for Mechanical Seals for Shipboard Pump Applications


    ICS Code

    ICS Number Code 23.080 (Pumps)

    UNSPSC Code

    UNSPSC Code 25110000(Marine transport)


    DOI: 10.1520/F0998-12

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