EN ISO 9905:1997
(Main)Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
Consists of a basic text covering general requirements. The technical requirements refer only to the pump unit. Includes design features concerned with installation, maintenance and safety of such pumps, including baseplate, coupling and auxiliary piping. The selection of the class to be used is made in accordance with the technical requirements for the application for which the pump is intended. The class chosen is to be agreed between purchaser and manufacturer/supplier.
Kreiselpumpen technische Anforderungen - Klasse I (ISO 9905:1994)
Diese Internationale Norm gilt für die Anforderungen der Klasse I (höchste Anforderung) für Kreiselpumpen, die in verschiedenen Industrien eingesetzt werden. Sie umfaßt einen Grundtext, der die allgemeinen Anforderungen festlegt. Die technischen Anforderungen gelten nur für das Pumpenaggregat. Speicherpumpen sind in dieser Internationalen Norm nicht erfaßt. Hierfür wird eine separate Norm von IEC herausgegeben.
Spécifications techniques pour pompes centrifuges - Classe I (ISO 9905:1994)
La CEI 60633:1998+A1:2009 s'applique au transport d'énergie en courant continu à haute tension (CCHT) et spécialement aux sous-stations de conversion de CCHT dans lesquelles des convertisseurs électroniques de puissance sont utilisés pour la conversion du courant alternatif en courant continu ou vice versa.
Cette version consolidée comprend la seconde édition (1998) et son amendement 1 (2009). Il n'est donc pas nécessaire de commander les amendements avec cette publication.
Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2000
Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
Kreiselpumpen technische Anforderungen - Klasse I (ISO 9905:1994)
Spécifications techniques pour pompes centrifuges - Classe I (ISO 9905:1994)
Ta slovenski standard je istoveten z: EN ISO 9905:1997
ICS:
23.080 ýUSDONH Pumps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
Y
INTERNATIONAL
IS0
STANDARD
First edition
1994-05-01
Technical specifications for centrifugal
- Class I
pumps
Spbcifications techniques pour pompes centrifuges - Classe I
Reference number
IS0 9905:1994(E)
IS0 9905: 1994(E)
Contents
Page
1 Scope .
2 Normative references .
3 Definitions .
4 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
....................................................... 26
6 Shop inspection and tests
.......................................................... 29
7 Preparation for dispatch
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8 Responsibilities
Annexes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
A Centrifugal pump - Data sheet
. . . . . . . . . . . . . . . . . . . . . . . . . . . 36
B External forces and moments on branches
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Enquiry, proposal, purchase order
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D Documentation after purchase order
. . . . . . . . . . .e. 46
E Peak displacement
.............................................
F Examples of seal arrangements
............................................... 49
G Piping arrangements for seals
........................... 67
H Code for identification of fluid connections
J Materials and material specifications for centrifugal pump parts
K Check-list .
............................................................................
L Bibliography
0 IS0 1994
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
II
Y
0 IS0
IS0 9905: 1994(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 9905 was prepared by Technical Committee
lSO/TC 115, Pumps, Subcommittee SC 1, Dimensions and technical
specifications of pumps.
Annexes A, B, C and D form an integral part of this International Standard.
Annexes E, F, G, H, J, K and L are for information only.
63 IS0
IS0 9905: 1994(E)
Introduction
This International Standard is the second of a set dealing with technical
specifications of centrifugal pumps; the specifications are designated as
Classes I, II and III. Class I (this International Standard) comprises the most
severe and Class III (see IS0 9908) the least severe requirements. For
requirements for Class II centrifugal pumps, see IS0 5199.
The selection of the class to be used is made in accordance with the
technical requirements for the application for which the pump is intended.
The class chosen is to be agreed between purchaser and
manufacturer/supplier.
The safety requirements of the field of application are furthermore to be
taken into account.
However, it is not possible to standardize the class of technical require-
ments for centrifugal pumps for a certain field of application, because each
field of application comprises different requirements. All classes (I, II and
III) can be used in accordance with the different requirements of the pump
application, e.g. for an oil refinery plant, chemical plant or power plant. It
may happen that pumps built in accordance with classes I, II and III may
work beside each other in one plant.
Conditions covering specific applications or industrial requirements are
dealt with in separate standards.
Criteria for the selection of a pump of the class required for a certain ap-
plication may be based on:
- reliability,
- operating conditions,
- environmental conditions,
- local ambient conditions.
Throughout this International Standard, text written in bold letters indi-
cates where a decision may be required by purchaser, or where agree-
ment is required between purchaser and manufacturer/supplier.
INTERNATIONAL STANDARD Q IS0
IS0 9905: 1994(E)
Technical specifications for centrifugal pumps -
Class I
based on this International Standard are encouraged
1 Scope
to investigate the possibility of applying the most re-
cent editions of the standards indicated below.
1.1 This International Standard covers the Class I
Members of IEC and IS0 maintain registers of cur-
(most severe) requirements for centrifugal pumps
rently valid International Standards.
used in various industries. It consists of a basic text
covering general requirements. The technical require-
I SO 7-l : 1982, Pipe threads where pressure-tight
ments refer only to the pump unit.
joints are made on the threads - Part 1: Designation,
dimensions and tolerances.
Storage pumps are not included in this International
Standard. A separate standard will be issued by IEC.
IS0 76: 1987, Rolling bearings - Static load ratings.
1.2 This International Standard includes design fea- IS0 185: 1988, Grey cast iron - Classification.
tures concerned with installation, maintenance and
IS0 228-l : 1982, Pipe threads where pressure-tight
safety of such pumps, including baseplate, coupling
c
joints are not made on the threads - Part 1: Desig-
and auxiliary piping.
nation, dimensions and tolerances.
1.3 Where this International Standard specification
IS0 281 :I 990, Rolling bearings - Dynamic load
has been called for:
ratings and rating life.
a) and requires a specific design feature, alternative
IS0 427:1983, Wrought copper-tin alloys - Chemical
designs may be offered which meet the intent of
composition and forms of wrought products.
this International Standard, provided that the al-
ternative is described in detail;
IS0 544: 1989, Filler materials for manual welding -
Size requirements.
b) pumps not complying with all requirements of this
International Standard may be offered for con-
IS0 1940-l : 1986, Mechanical vibration - Balance
sideration, provided that all deviations are stated.
quality requirements of rigid rotors - Part 1: Deter-
mina tion of permissible residual unbalance.
IS0 2372: 1974, Mechanical vibration of machines
with operating speeds from 10 to 200 rev/s - Basis
for specifying evaluation standards.
2 Normative references
IS0 2548:1973, Centrifugal, mixed flow and axial
The following standards contain provisions which,
- Code for acceptance tests - Class C (It is
pumps
through reference in this text, constitute provisions
planned to combine IS0 2548 with IS0 3555 during
of this International Standard. At the time of publica-
their next revision to create a new lntema tional Stan-
tion, the editions indicated were valid. All standards
dard).
are subject to revision, and parties to agreements
0 IS0
IS0 9905: 1994(E)
3.3 operating conditions: All operating parameters
IS0 2858: 1975, End-suction centrifugal pumps (rating
(for example temperature, pressure) determined by a
16 bar) - Designation, nominal duty point and di-
given application and pumped liquid.
mensrons.
These parameters will influence the type of con-
IS0 3069: 1974, End suction centrifugal pumps - Di-
struction materials.
mensions of cavities for mechanical seals and for soft
packing.
3.4 allowable operating range: Flow range, de-
IS0 3274:1975, Instruments for the measurement of fined by the manufacturer/supplier, at the specified
surface roughness by the profile method - Contact operating conditions using the impeller supplied, as
(stylus) instruments of consecutive profile transfor- limited by cavitation, heating, vibration, noise, shaft
ma tion deflection and other similar criteria; range whose up-
- Contact profile meters, system M.
per and lower limits are denoted by maximum and
IS0 3506: 1979, Corrosion-resistant stainless steel
minimum continuous flow, respectively.
fasteners - Specifications.
3.5 maximum allowable casing working
IS0 3555:1977, Centrifugal, mixed flow and axial
pressure: Greatest outlet pressure at the specified
- Code for acceptance tests - Class B (It is
pumps
operating temperature for which the pump casing is
planned to combine IS0 3555 with IS0 2548 during
suitable.
their next revision to create a new lnterna tional Stan-
dard).
3.6 basic design pressure: Pressure derived from
the permitted stress at 20 “C of the material used for
IS0 374411981, Acoustics - Determination of sound
the pressure-containing parts.
power levels of noise sources - Engineering meth-
ods for free-field conditions over a reflecting plane.
3.7 maximum outlet working pressure: Sum of
the maximum inlet pressure plus maximum differen-
IS0 374611979, Acoustics - Determination of sound
tial pressure at rated conditions using the supplied
power levels of noise sources - Survey method.
impeller.
IS0 3755:1991, Cast carbon steels for general engin-
3.8 rated outlet pressure: Outlet pressure of the
eering purposes.
pump at the guarantee point with rated flow, rated
speed, rated inlet pressure and density.
IS0 4863:1984, Resilient shaft couplings - Infor-
mation to be supplied by users and manufacturers.
3.9 maximum inlet pressure: Highest inlet press-
IS0 7005-I :I 992, Metallic flanges - Part 1: Steel
ure to which the pump is subjected during operation.
flanges.
Inlet pressure for the
3.10 rated inlet pressure:
IS0 7005-2: 1988, Metallic flanges - Part 2: Cast iron
e point.
opera ting conditions at the gu arante
flanges.
3.11 maximum allowable temperature: Highest
IS0 7005-3:1988, Metallic flanges - Part 3: Copper
allowable continuous temperature for which the
alloy and composite flanges.
equipment (or any part to which the term refers) is
suitab e when handling the specified operating fluid
specified operating pressure.
at the
3 Definitions
3.12 rated power input: Power required by the
at the rated conditions.
Pump
For the purposes of this International Standard, the
following definitions apply.
3.13 maximum dynamic sealing pressure: High-
est pressure expected at the shaft seals during any
31 . normal conditions: Conditions at which usua
specified operating condition and during startup and
operation is expected.
shutdown.
3.2 rated conditions: Specified guarantee-point op
NOTE 1 Pn determining this pressure, consideration
erating conditions, including flowrate, head, power,
should be given to the maximum inlet pressure, circulation
efficiency, net positive suction head, suction press-
or injection (flush) pressure and the effect of internal clear-
ure, temperature, density, viscosity and speed. ance changes.
IS0 9905: 1994(E)
3.14 minimum permitted flow
is rotated manually in its bearings in the horizontal
position.
(1) for stable flow: Lowest flowrate at which the
The radial face is that which determines the alignment
pump can operate without exceeding the noise and
of a seal component.
vibration limits imposed by this International Standard.
(2) for thermal flow: Lowest flowrate at which the
3.24 shaft deflection: Displacement of a shaft from
pump can operate and still maintain the temperature
its geometric centre in response to the radial hydraulic
of the pumped liquid below that at which net positive
forces acting on the impeller.
ing caused by impeller unbalance or shaft runout.
3.15 corrosion allowance: That portion of the wall
thickness of the parts wetted by the pumped liquid in
3.25 circulation (flush): Return of pumped liquid
excess of the theoretical thickness required to with-
from a high pressure area to seal cavity, by external
stand the pressure limits given in 4.4.2.2 and 4.4.2.4.
piping or internal passage, to remove heat generated
at the seal or to maintain positive pressure in the
...
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