scope:

This standard applies to the evaluation of vibration on rotodynamic pump applications absorbing more than 2 kW (3 hp) and of the types as indicated in Figure 9.6.4.2.3.1. It pertains to evaluation of vibration when the vibration measurements are made on nonrotating parts (bearing housing vibration).

The general evaluation criteria are included for acceptance tests in field environments or at the manufacturer's test facility, as appropriate and as defined in the standard.

The following types of pumping equipment and associated equipment are excluded from this standard:

• Submersible pumps (refer to ANSI/HI 11.6)

• Submersible vertical turbine pumps

• Wet pit cantilever belt-driven pumps with overhung motors

• API 610 or ISO 13709 pumps (refer to API 610 or ISO 13709)

• Reciprocating engine-driven pumps

• Separately mounted drivers (i.e., vertical motors on separate floors)

• Right-angle gear drives

• Maritime applications

For these pumping equipment types, refer to other industry standards, if available, or the pump manufacturer.

Torsional vibration is not dealt with in this standard.

Information for assessing shaft vibration measured on rotating shafts is excluded from the scope of this document. The user is referred to the ISO 10816-7 standard for information on this topic.

This standard applies to tests conducted within the rated speed ±10%. Tests conducted at speeds exceeding these limitations (such as variable-speed pumps or 50-cycle pumps tested with 60-cycle power for factory tests) shall be mutually agreed upon by the user and manufacturer due to the possibility of objectionable resonance effects.

This standard is applicable to solids-handling pump types. A solids-handling pump is defined as a pump designed to ensure maximum freedom from clogging when handling liquids containing organic solids or stringy materials.

This standard is applicable to slurry pump types. A slurry pump is defined as a pump suitable for pumping a mixture of abrasive solids with specific gravity greater than 1 and concentration by volume greater than 2% in a liquid carrier, usually water. For more information on slurry pump types, refer to the latest edition of ANSI/HI 12.1-12.6 Rotodynamic Slurry Pumps for Nomenclature, Definitions, Applications, and Operation. If an ASME B73.1-type pump is used as a slurry pump, the acceptable vibration levels for slurry pumps as provided herein shall be used.

Purpose and aim of the Hydraulic Institute

The purpose and aims of the Institute are to promote the continued growth of pump knowledge for the interest of pump users and manufacturers and to further the interests of the public in such matters as are involved in manufacturing, engineering, distribution, safety, transportation and other problems of the industry, and to this end, among other things:

a) To develop and publish standards for pumps;

b) To collect and disseminate information of value to its members and to the public;

c) To appear for its members before governmental departments and agencies and other bodies in regard to matters affecting the industry;

d) To increase the amount and to improve the quality of pump service to the public;

e) To support educational and research activities;

f) To promote the business interests of its members but not to engage in business of the kind ordinarily carried on for profit or to perform particular services for its members or individual persons as distinguished from activities to improve the business conditions and lawful interests of all of its members.

Purpose of Standards

1) Hydraulic Institute Standards are adopted in the public interest and are designed to help eliminate misunderstandings between the manufacturer, the purchaser and/or the user and to assist the purchaser in selecting and obtaining the proper product for a particular need.

2) Use of Hydraulic Institute Standards is completely voluntary. Existence of Hydraulic Institute Standards does not in any respect preclude a member from manufacturing or selling products not conforming to the Standards.