Vibration acceptance criteria for rotodynamic pumps- ISO, HI

Name: Vibration acceptance criteria for rotodynamic pumps- ISO, HI
Rating: 3.8 (6 reviews)

Evaluation of machine vibration on rotating and non-rotating parts - For rotodynamic pumps for industrial applications,

Created byGhazanfar Khan

Last updated 6/2021

English

What you'll learn

Basics of vibrations and vibration analysis as applicable to rotodynamic pumps
Vibration measurement and acceptance criteria as per ISO 10816-7
Vibration measurement and acceptance criteria ANSI/HI 9.6.4
Allowable vibration limits for pumps for different applications

Course content

5 sections • 21 lectures • 1h 40m total length

Introduction to the course2:14
This is an introduction to the course. The students will be able to know the course content, the target audience and the pre-requisites for attending this course.

Pump classification and designation system3:59
The students will be able to know the pumps classification and designation system according to their design that is, Over Hung, Between Bearing and Vertically Suspended. Each pump type has different vibration measurement locations and different vibration acceptance limits.
Typical mounting arrangement for vibration transducers5:52
According to the vibration measurement plan, the different mounting arrangements are selected for the vibration transducers. Each mounting arrangement is suitable for different frequency range and corresponding low or high sensitivity.
Shaft displacement measurement3:32
The displacement measurement is particularly relevant for low frequency vibration signals. When to measure relative vibration and when to measure absolute vibration is explained in this lecture.

Vibration measurement protocols and procedures4:24
The pre-conditions for the application of the vibration measurement standard and acceptance criteria according to HI 9.6.4 are covered in this lecture.
Vibrations measurement locations and directions2:58
This standard defines the locations and directions in which the vibrations have to be measured according to the standard.
Acceptance test installation and testing conditions5:19
The pre-requisites for application of this standard are defined in this lecture.
Allowable pump vibration, BB1–BB5 and OH1–OH5, OH7 pumps3:24
The students will know exactly the acceptable vibration values are allowed for Over Hung and Between Bearing pumps operating above 600 rpm, for pump input power up to 200 kW or above and for the field test or the factory test.
Allowable vibration limits for vertically suspended pumps2:48
This lecture is on allowable pump vibrations for vertically suspended pumps according to the pump power input and field or factory testing.
Allowable vibration limits for solids-handling pumps3:25
This lecture is about allowable vibrations for pumps handling solids.
Allowable vibration limit for slurry handling pumps2:09
This lecture is on vibration limits for slurry handling pumps.
Allowable vibration limits for pump operating below 600 rpm7:02
This lecture is about allowable vibration limits for pumps operating below 600 rpm.

Preamble for ISO 10816-710:21
The pre-conditions for application of ISO standard for measurement of vibrations and acceptance criteria are laid down in the lecture.
Zone limits for vibration of non-rotating parts6:46
The students will learn about the zones and corresponding vibration limits for different categories of pumps and later for different types of bearings.
Additional criteria for vibration limits for speed < 600 rpm and journal bearing5:09
This part of the ISO standard is about shaft vibration measurement procedure and acceptable values.

Vibrations related to pumps4:42
The students will be able to read the important information contained in a FFT spectrum and will be able to understand the dynamic behavior of the pump.
Sub-synchronous vibration frequencies 5% - 35% of FFT spectrum4:23
This lecture explains the factors in rotodynamic pumps which result in vibrations in the FFT spectrum from 5% to 35% of the speed of rotation.
Sub-synchronous vibration frequencies 40% - 55% of FFT spectrum5:51
In this lecture the reasons for sub-synchronous vibrations in the range of 40 to 55 % of the FFT spectrum are explained.
Sub-synchronous vibration frequencies 60% - 80% of FFT spectrum3:05
In this lecture the students will learn about the factors which cause sub-synchronous vibrations in the range of 60 to 80 % FFT spectrum
Synchronous vibrations 1x8:41
The students will be able to read the information contained in the Synchronous vibration frequencies (1x) of the FFT spectrum and will be able to relate to the causes of high vibration amplitudes.
Non-synchronous vibration frequencies4:12
This lecture is about non-synchronous vibrations generated by cavitation in pumps and also includes details of vibration signature of rolling element bearing defects during different stages of failure.

Requirements

Basic engineering knowledge
Intermediate knowledge of pumps and pumping systems
Familiarity with the basics of vibration and vibration analysis will help
Industry experience is desirable

Description

This course designed to explain the principles of vibration measurements and acceptable vibration values for rotodynamic pumps measured during factory and on-site inspections based on recommendations of international standards – ISO 10816-7, and ANSI/HI 9.6.4.

The guidelines in each standard has a specific scope, that is the ANSI /HI standard covers vibrations on non-rotating parts, while the ISO standard covers vibrations measured on both the rotating and non-rotating parts. Similarly, each standard covers specific industry and applications and thus simultaneously cover a wide range of industries and applications.

Vibration measurement during the factory inspections is of paramount importance in ensuring trouble free operations and reliability of the plant and equipment. Similarly vibration measurement in the field is an essential part of condition monitoring of rotodynamic pumps. Although these standards are dealing with new pumps, the compliance to the permissible vibration limits guarantees good health in operations and this information can be used as a baseline for field monitoring and planning interventions.

Excessive vibrations in pumps can come from design deficiencies, inadequate quality control during manufacturing, improper testing arrangements - factory and site included, and from faulty installation and operations. This course covers the ground rules for balancing, fits and tolerances, proper testing arrangements and highlight the essentials of correct installation and operations.

Although it is desirable that the participants are familiar with the basics of vibrations and vibration analysis, nonetheless the basic concepts related to vibrations and vibration analysis are covered under a sperate title which is referred to in this course as a pre-requisite.

I hope that this course will assist the participants in improving their understanding and effectiveness in the field and will help in improving the reliability of the pumps in the plant.

Who this course is for:

Managers, Engineers and Supervisors dealing with pumps and pumping systems
Those responsible for developing the specifications and testing and acceptance criteria
Professional dealing with acceptance and approvals of new pumping equipment
Professional dealing with operation and maintenance of pumps and pumping systems
All professionals looking for additional practical engineering knowledge

Vibration acceptance criteria for rotodynamic pumps- ISO, HI

What you'll learn

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Course content

Introduction1 lecture • 2min

International standards on rotodynamic pump vibrations3 lectures • 13min

Vibration limits and acceptance criteria ANSI/HI 9.6.48 lectures • 31min

Evaluation of machine vibrations for rotodynamic pumps - ISO 10816 - 73 lectures • 22min

Vibrations related to pumps6 lectures • 31min

Requirements

Description

Who this course is for: