COMESA 283: Field acceptance tests to determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines

2007·18 MB·English/French

by  Common Market for Eastern and Southern Africa (COMESA)

Common Market for Eastern
and Southern Africa
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COMESA 283 (2007) (English/French): Field
acceptance tests to determine the hydraulic
performance of hydraulic turbines, storage
pumps and pump-turbines

COMESA HARMONISED COMESA/FDHS
STANDARD 283:2007

Field acceptance tests to determine the
hydraulic performance of hydraulic turbines,
storage pumps and pump-turbines

REFERENCE: FDHS 283:2007
Foreword

The Common Market for Eastern and Southern Africa (COMESA) was established in 1994 as a
regional economic grouping consisting of 20 member states after signing the co-operation Treaty.
In Chapter 15 of the COMESA Treaty, Member States agreed to co-operate on matters of
standardisation and Quality assurance with the aim of facilitating the faster movement of goods
and services within the region so as to enhance expansion of intra-COMESA trade and industrial
expansion.

Co-operation in standardisation is expected to result into having uniformly harmonised standards.
Harmonisation of standards within the region is expected to reduce Technical Barriers to Trade
that are normally encountered when goods and services are exchanged between COMESA
Member States due to differences in technical requirements. Harmonized COMESA Standards
are also expected to result into benefits such as greater industrial productivity and
competitiveness, increased agricultural production and food security, a more rational exploitation
of natural resources among others.

COMESA Standards are developed by the COMESA experts on standards representing the
National Standards Bodies and other stakeholders within the region in accordance with
international procedures and practices. Standards are approved by circulating Final Draft
Harmonized Standards (FDHS) to all member states for a one Month vote. The assumption is
that all contentious issues would have been resolved during the previous stages or that an
international or regional standard being adopted has been subjected through a development
process consistent with accepted international practice.

COMESA Standards are subject to review, to keep pace with technological advances. Users of
the COMESA Harmonized Standards are therefore expected to ensure that they always have the
latest version of the standards they are implementing.

This COMESA standard is technically identical to IEC 60041:1991, Field acceptance tests to
determine the hydraulic performance of hydraulic turbines, storage pumps and pump-turbines

A COMESA Harmonized Standard does not purport to include all necessary provisions of a contract.
Users are responsible for its correct application.

Publication 41 de la CEI IEC Publication 41
(Troisième édition – 1991) (Third edition – 1991)
Essais de réception sur place des turbines Field acceptance tests to determine
hydrauliques, pompes d’accumulation et the hydraulic performance of
pompes-turbines, hydraulic turbines, storage pumps and
en vue de la détermination pump-turbines
de leurs performances hydrauliques
CORRIGE NDUM 1
Correction dans le texte anglais uniquement Page 3
CONTENTS
In the title of subclause 4.1, instead of
. . . provision for the test . . .
read
. . . provision for test . . .
Page 13
Correction dans le texte anglais uniquement In clause 1, Scope and object, change the
numeration in order to obtain (as on page 12):
1 Scope and object
1.1 Scope
1.1.1 This International Standard . . .
1.1.2 Model tests, when used . . .
1.1.3 Tests of speed . . .
1.2 Object
1.3 Types of machines
Page 17
Page 16
Dans le tableau, au paragraphe 2.3.1.7 (Limites), In the table, subclause 2.3.1.7 (Limits), replace the
remplacer les signes représentatifs existants par existing symbols by the following new symbols:
les nouveaux signes suivants:
. . . not to be exceeded
. . . à ne pas dépasser . . . to be reached or
. . . à atteindre ou
Correction dans le texte anglais uniquement Page 29
In the table, subclause 2.3.6.4, third column, in the
sixth line, instead of
. . . and g =- g3+g4
2
read
g +g
. . . and g = 3 4
2
Page 30
Dans le tableau, au paragraphe 2.3.6.5, sous Correction in the French text only.
«Terme» (deuxième colonne), au lieu de
. . . . pompe à débit
lire
. . . . pompe à débit nul
Page 34, figure 5b Page 35, figure 5b
Dans la partie supérieure du schéma, déplacer les In the upper part of the diagram, rearrange the two
deux équations existantes afin de les situer ensemble existing equations so as to place them together, on
à droite, au-dessus du schéma décrivant un «Groupe the right-hand side, above the diagram describing a
à axe horizontal», comme suit: “Horizontal shaft unit” as follows:
Z = z – z Z = z – z
1 1´ 1 1 1´ 1
Z = z – z Z = z – z
2 2´ 2 2 2´ 2
Page 36, figure 5c Page 37, figure 5c
Dans la bordure de droite du schéma, à la hauteur Add, at the right-hand side of the diagram, level
de la pointe de flèche, ajouter l’équation suivante: with the arrowhead, the following equation:
z = z z = z
1 2 1 2
Page 84, figure 14 Correction in the French text only
Dans le schéma, au lieu de «constant», lire partout
«constante».
Page 86 Correction in the French text only
6.2.3.2 Erreurs aléatoires
Dans l’avant-dernière ligne de la page, au lieu de
. . . dépend de la combinaison des lectures et de
la combinaison de l’erreur aléatoire . . .
lire
. . . dépend de la combinaison de l’erreur
aléatoire . . .
Page 128 Page 129
10.2.3.2 Prescriptions complémentaires 10.2.3.2 Additional requirements
Au cinquième alinéa, au lieu de In the fifth paragraph, instead of
Annexes F et G de l’ISO 3354: Annexes F and G of ISO 3354:
lire read
Annexes H et J de l’ISO 3354: Annexes H and J of ISO 3354:
Correction dans le texte anglais uniquement Page 141
10.2.5.6 Computation of discharge
In the eighth line of text, instead of
m is the coefficient . . .
read
m is a coefficient . . .
Correction dans le texte anglais uniquement Page 195, figure 34b
In the legends below the diagram, on the right-hand
side; in the first line, instead of
. . . (geodesic . . .
read
. . . (geodetic . . .
third line, instead of
zB´ = zB´ – zB . . .
read
ZB´ = zB´ – zB . . .