EN ISO 9908:1997/A1:2011

Technical specifications for centrifugal pumps - Class III - Amendment 1 (ISO 9908:1993/AMD 1:2011)

MINOR AMENDMENT!!!     MINOR AMENDMENT!!!     MINOR AMENDMENT!!!     MINOR AMENDMENT!!!

Technische Anforderungen für Kreiselpumpen - Klasse III - Änderung 1 (ISO 9908:1993/Amd.1:2011)

Spécifications techniques pour pompes centrifuges - Classe III - Amendement 1 (ISO 9908:1993/AMD 1:2011)

Tehnične specifikacije za centrifugalne črpalke - Razred III - Dopolnilo 1 (ISO 9908:1993/AMD 1:2011)

General Information

• Status: Published
• Publication Date: 14-Apr-2011
• Withdrawal Date: 30-Oct-2011
• ICS: 23.080 - Pumps
• Technical Committee: CEN/TC 197 - Pumps
• Drafting Committee: CEN/TC 197 - Pumps
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 15-Apr-2011
• Completion Date: 15-Apr-2011
• Ref Project: SIST EN ISO 9908:2000/A1:2014 - Technical specifications for centrifugal pumps - Class III - Amendment 1 (ISO 9908:1993/AMD 1:2011)

Relations

• Amends: EN ISO 9908:1997 - Technical specifications for centrifugal pumps - Class III (ISO 9908:1993)
• Effective Date: 13-Sep-2010

Overview

EN ISO 9908:1997/A1:2011 is a minor amendment to the European adoption of ISO 9908:1993, covering technical specifications for centrifugal pumps - Class III. Issued by CEN in April 2011, this amendment primarily updates normative references and clarifies which hydraulic test standard and acceptance class apply when assessing Class III centrifugal pumps. The amendment preserves the original standard’s content while aligning test and NPSH references to the revised ISO test series.

Key topics and requirements

• Scope: Applies to technical specifications for Class III centrifugal pumps (ICS 23.080).
• Normative reference updates:
  • Deletes ISO 2372:1974 from the normative references.
  • Replaces older references ISO 2548:1973 and ISO 3555:1977 with ISO 9906 - Rotodynamic pumps - Hydraulic performance acceptance tests - Grades 1, 2 and 3 (noted in the amendment as “to be published” as part of the revision of ISO 9906:1999).
• NPSHR basis: Net positive suction head required (NPSHR) values are now to be based on cold water as specified in ISO 9906, instead of the older ISO references.
• Hydraulic performance tests: Where a hydraulic performance test is required, it shall be conducted in accordance with ISO 9906 Class 2 for clean cold water.
• Editorial changes: Minor table footnote renumbering and removal of an ISO 2372 footnote; no technical content of EN ISO 9908:1997 was altered beyond reference alignment.

Practical applications

• Manufacturers and designers: Use the amended standard when specifying performance acceptance criteria, reporting NPSHR, and ensuring pump designs meet Class III requirements referenced to ISO 9906 test methods.
• Test laboratories and QA teams: Apply ISO 9906 Class 2 procedures for performance testing of Class III centrifugal pumps and base NPSHR on cold-water measurements per ISO 9906.
• Procurement and specifications: Include EN ISO 9908:1997/A1:2011 references in tender documents and contracts to ensure consistent acceptance testing and performance verification across suppliers and countries.
• Compliance officers and standards managers: Ensure national adoption and withdrawal of conflicting national standards per CEN timelines, and note potential patent-right considerations called out in the foreword.

Related standards

• ISO 9906 (Rotodynamic pumps - Hydraulic performance acceptance tests - Grades 1,2,3) - primary test-method reference after this amendment.
• Historical references replaced: ISO 2548 and ISO 3555 (now superseded in the context of EN ISO 9908 by ISO 9906).

This amendment is primarily administrative and alignment-focused, improving consistency between EN ISO 9908 and the current ISO test methodology for rotodynamic pumps. Keywords: EN ISO 9908:1997/A1:2011, ISO 9908, centrifugal pumps, Class III, ISO 9906, NPSHR, hydraulic performance tests, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2014
7HKQLþQHVSHFLILNDFLMH]DFHQWULIXJDOQHþUSDONH5D]UHG,,,'RSROQLOR,62
$0'
Technical specifications for centrifugal pumps - Class III - Amendment 1 (ISO
9908:1993/AMD 1:2011)
Spécifications techniques pour pompes centrifuges - Classe III - Amendement 1 (ISO
9908:1993/AMD 1:2011)
Spécifications techniques pour pompes centrifuges - Classe III - Amendement 1 (ISO
9908:1993/AMD 1:2011)
Ta slovenski standard je istoveten z: EN ISO 9908:1997/A1:2011
ICS:
23.080 ýUSDONH Pumps
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9908:1997/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 23.080
English Version
Technical specifications for centrifugal pumps - Class III -
Amendment 1 (ISO 9908:1993/AMD 1:2011)
Spécifications techniques pour pompes centrifuges -
Classe III - Amendement 1 (ISO 9908:1993/AMD 1:2011)
This amendment A1 modifies the European Standard EN ISO 9908:1997; it was approved by CEN on 17 April 2011.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9908:1997/A1:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 9908:1997/A1:2011) has been prepared by Technical Committee ISO/TC 115
"Pumps" in collaboration with Technical Committee CEN/TC 197 “Pumps” the secretariat of which is held by
AFNOR.
This Amendment to the European Standard EN ISO 9908:1997 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and
conflicting national standards shall be withdrawn at the latest by October 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Swe
...