EN ISO 9905:1997/A1:2011

Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO 9905:1994/AMD 1:2011)

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

Technische Anforderungen für Kreiselpumpen - Klasse I - Änderung 1 (ISO 9905:1994/Amd.1:2011)

Spécifications techniques pour pompes centrifuges - Classe I - Amendement 1 (ISO 9905:1994/AMD 1:2011)

Tehnične specifikacije za centrifugalne črpalke - Razred I - Dopolnilo 1 (ISO 9905:1994/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 9905:2000/A1:2014 - Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO 9905:1994/AMD 1:2011)

Relations

• Amends: EN ISO 9905:1997 - Technical specifications for centrifugal pumps - Class I (ISO 9905:1994)
• Effective Date: 13-Sep-2010

Overview

EN ISO 9905:1997/A1:2011 is Amendment 1 to ISO 9905:1994, the international/European technical specification for Class I centrifugal pumps. Published and endorsed by CEN in April 2011, this amendment is explicitly minor and mainly updates normative references and cross-references to align pump specification and test clauses with the then-upcoming revision of the hydraulic performance test standard.

Key topics and requirements

• Scope: Technical specifications for rotodynamic (centrifugal) pumps designated as Class I-covers performance, testing references, and certain material and vibration cross-references.
• Normative reference updates:
  • Deleted references to ISO 427:1983 and ISO 2372:1974 (obsolete references removed).
  • Replaced references to ISO 2548:1973 and ISO 3555:1977 with ISO 9906 (Rotodynamic pumps - Hydraulic performance acceptance tests - Grades 1, 2 and 3). A footnote in the amendment notes ISO 9906 was to be published as a revision of ISO 9906:1999.
• NPSH (NPSHR) specification: Net positive suction head required (NPSHR) shall be based on cold water in accordance with ISO 9906 unless otherwise agreed (replacing older ISO references).
• Testing and performance cross-references:
  • Hydraulic performance tests and NPSH tests are now specified to follow ISO 9906.
  • Clause and figure cross-references updated to point to ISO 9906 for definitions (for example, definition of K and other test-related terms).
• Editorial corrections:
  • Removal of outdated footnotes and deletion of obsolete source citations in table and figure titles (e.g., Table 1 and Figure E.1).
  • Material table (Table J.1) updated to remove the ISO 427 citation for bronze.

Applications

• Pump manufacturers: to align product specifications, documentation and test reports with current international/European requirements for Class I centrifugal pumps.
• Test laboratories and QA teams: to perform hydraulic performance and NPSH testing in accordance with the referenced ISO 9906 acceptance grades.
• Engineers and specifiers: to reference the correct normative standards when designing systems or procuring pumps for industrial, municipal or process applications.
• Procurement and compliance officers: to ensure purchased equipment meets EN/ISO conformance as adopted by CEN national bodies.

Related standards and context

• Primary related standard: ISO 9906 (Rotodynamic pumps - Hydraulic performance acceptance tests) - amendment aligns EN ISO 9905 test references with ISO 9906.
• The amendment was implemented across CEN member national standards bodies and is an editorial/registration update to maintain consistency with revised test methods.

Keywords: centrifugal pump standard, EN ISO 9905 amendment, Class I centrifugal pumps, NPSHR, hydraulic performance tests, ISO 9906, pump testing, CEN compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2014
7HKQLþQHVSHFLILNDFLMH]DFHQWULIXJDOQHþUSDONH5D]UHG,'RSROQLOR,62
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Technical specifications for centrifugal pumps - Class I - Amendment 1 (ISO
9905:1994/AMD 1:2011)
Technische Anforderungen für Kreiselpumpen - Klasse I - Änderung 1 (ISO
9905:1994/Amd.1:2011)
Spécifications techniques pour pompes centrifuges - Classe I - Amendement 1 (ISO
9905:1994/AMD 1:2011)
Ta slovenski standard je istoveten z: EN ISO 9905:1997/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 9905:1997/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 23.080
English Version
Technical specifications for centrifugal pumps - Class I -
Amendment 1 (ISO 9905:1994/AMD 1:2011)
Spécifications techniques pour pompes centrifuges -
Classe I - Amendement 1 (ISO 9905:1994/AMD 1:2011)
This amendment A1 modifies the European Standard EN ISO 9905:1997; 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 9905:1997/A1:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 9905:1997/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 9905:1997 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,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 9905:1994/AMD 1:2011 has been approved by CEN as a EN ISO 9905:1997/A1:2011 without
any modification.
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