SIST EN 60609-2:2001

Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines -- Part 2: Evaluation in Pelton turbines

This standard serves as a basis for the formulation of guarantees on cavitation pitting on Pelton turbine runners. It also provides a basis for the measurement and evaluation of the amount of cavitation pitting on Pelton turbine runners of a given turbine, which is defined in the contract by power, specific hydraulic energy of machine (head), rotational speed, material, operation etc. Guarantees which restrict the extent of caviation pitting and drop erosion on Pelton turbies at the end of an operating period specified in the contract are necessary when the pitting is expected in all or in some operating ranges.

Bewertung des Kavitationsangriffs in Wasserturbinen, Speicherpumpen und Pumpenturbinen -- Teil 2: Bewertung in Peltonturbinen

Evaluation de l'érosion de cavitation dans les turbines, les pompes d'accumulation et les pompes-turbines hydrauliques -- Partie 2: Evaluation dans les turbines Pelton

La présente norme constitue la base de la formulation des garanties d'érosion de cavitation des roues des turbines Pelton. Elle traite aussi de la mesure et de l'évaluation de l'importance de cette érosion pour les roues d'une turbine donnée caractérisée contractuellement par sa puissance, son énergie hydraulique massique (chute), sa vitesse de rotation, la nature des matériaux, les conditions de fonctionnement, etc. Des garanties, qui limitent l'étendue de l'érosion par la cavitation et par l'impact de jet dans les turbines Pelton à la fin d'une période de fonctionnement précisée dans le contrat, sont à établir chaque fois que des dommages sont susceptibles de se produire dans tout ou une partie des fonctionnements envisagés.

Ovrednotenje kavitacijskih razjed vodnih turbin, akumulacijskih črpalk in črpalnih turbin – 2. del: Ovrednotenje za Peltonove turbine (IEC 60609-2:1997)

General Information

• Status: Published
• Publication Date: 28-Feb-2001
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: IEHT - Electrotechnics - Hydraulic turbins
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2001
• Due Date: 01-Mar-2001
• Completion Date: 01-Mar-2001
• Ref Project: EN 60609-2:1999 - Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines - Part 2: Evaluation in Pelton turbines

Relations

• Replaces: SIST IEC 60609-2:1999 - Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines - Part 2: Evaluation in Pelton turbines
• Effective Date: 01-Dec-2001

Overview

EN 60609-2:1999 (CLC) - "Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines - Part 2: Evaluation in Pelton turbines" defines a contractual and technical basis for assessing cavitation pitting and drop erosion on Pelton turbine runners. The standard supports measurement, evaluation and the formulation of guarantees related to pitting expected during specified operating periods. It is intended for use when pitting may occur in all or some operating ranges and when guarantees on allowable damage at the end of service intervals are required.

Key Topics

• Scope and purpose: Establishes the framework to quantify cavitation pitting on Pelton runners for contractual assessment and acceptance.
• Measurement and evaluation basis: Provides guidance for measuring the amount of cavitation pitting and evaluating its significance relative to contract conditions such as power, head (specific hydraulic energy), rotational speed, material and operational profile.
• Guarantee formulation: Supports preparation of supplier/contractor guarantees that limit the extent of pitting and erosion at the end of an agreed operating period.
• Inspection and documentation: Emphasizes the need for systematic inspection results and documented evaluation to support contractual claims and operational decisions.

(EN 60609-2 does not prescribe specific numerical thresholds in this summary - users should refer to the full standard for detailed measurement methods and acceptance criteria.)

Applications

• Hydropower manufacturers: Define warranty and acceptance criteria for new Pelton runners supplied to plant owners.
• Plant owners and operators: Use the standard to specify contractual limits on cavitation pitting, plan maintenance, and evaluate wear after commissioning or operating intervals.
• Testing and inspection laboratories: Provide a consistent basis for reporting pitting measurements and supporting contractual dispute resolution.
• Consultants and engineers: Integrate standardized evaluation practices into procurement specifications and lifecycle-management plans.

Common use cases include drafting guarantees in supply contracts, post-runner inspection and acceptance testing, and comparative evaluation of runner materials and operational regimes.

Related Standards

• EN 60609 series (other parts cover different turbine types and general principles) - consult the wider EN 60609 family for methods applicable to other turbine designs, storage pumps and pump-turbines.
• Complementary hydropower standards on materials, testing and acceptance may be referenced when developing specifications and guarantees.

Keywords: cavitation pitting, Pelton turbines, pitting evaluation, hydraulic turbines, drop erosion, measurement, guarantee, inspection, hydropower.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2001
1DGRPHãþD
SIST IEC 60609-2:1999
2YUHGQRWHQMHNDYLWDFLMVNLKUD]MHGYRGQLKWXUELQDNXPXODFLMVNLKþUSDONLQþUSDOQLK
WXUELQ±GHO2YUHGQRWHQMH]D3HOWRQRYHWXUELQH,(&
Cavitation pitting evaluation in hydraulic turbines, storage pumps and pump-turbines --
Part 2: Evaluation in Pelton turbines
Bewertung des Kavitationsangriffs in Wasserturbinen, Speicherpumpen und
Pumpenturbinen -- Teil 2: Bewertung in Peltonturbinen
Evaluation de l'érosion de cavitation dans les turbines, les pompes d'accumulation et les
pompes-turbines hydrauliques -- Partie 2: Evaluation dans les turbines Pelton
Ta slovenski standard je istoveten z: EN 60609-2:1999
ICS:
27.140 Vodna energija Hydraulic energy engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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