SIST EN 15097:2007

Irrigation techniques - Localised irrigation - Hydraulic evaluation

The purpose of this Standard is to describe a localised irrigation hydraulic system and to specify a method to determine the uniformity in water distribution for each installation to be evaluated in the field.
This document applies to localised irrigation systems. It does not cover management practices.
This paper defines the methodology to be applied in the farm localised irrigation system evaluation.

Bewässerungsverfahren - Örtliche Bewässerung - Hydraulische Festlegungen

Diese Internationale Norm legt ein Verfahren zur Bestimmung des Stickstoffgehaltes von Getreide, Hülsen¬früchten und deren Produkten nach dem Kjeldahl-Verfahren und ein Verfahren zur Berechnung des Rohproteingehaltes fest.
Das Verfahren unterscheidet nicht zwischen Proteinstickstoff und Nichtproteinstickstoff. Wenn es wichtig ist, den Gehalt an Nichtproteinstickstoff zu bestimmen, kann ein geeignetes Verfahren angewendet werden.
ANMERKUNG   In bestimmten Fällen ist eine vollständige Erfassung des in Nitraten und Nitriten vorliegenden Stickstoffs mit diesem Verfahren nicht möglich.

Techniques d'irrigation - Irrigation localisée - Evaluation hydraulique

Namakalna tehnika – Točkovno namakanje – Hidravlični izračun

General Information

• Status: Published
• Publication Date: 31-Mar-2007
• ICS: 65.060.35 - Irrigation and drainage equipment
• Technical Committee: IMKG - Machinery for agriculture and forestry
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2007
• Due Date: 01-Apr-2007
• Completion Date: 01-Apr-2007
• Ref Project: EN 15097:2006 - Irrigation techniques - Localised irrigation - Hydraulic evaluation

Overview

EN 15097:2006 - published by CEN - defines a field method for the hydraulic evaluation of localised irrigation systems (drip and micro-irrigation). The standard describes how to characterise a localised irrigation hydraulic system, collect basic farm and system data, perform on‑farm tests under normal working conditions, and calculate distribution uniformity measures for each installation. It applies to localised irrigation systems only and does not cover management practices.

Key topics and requirements

• Scope and preparatory data: collect farm plan, topography, system layout, manufacturer/installer, age, water source, pump station, filters, emitters, pipe diameters and materials.
• Field sampling procedure: select a representative test sub-unit (SR) and sample four laterals at positions near inlet, 1/3, 2/3 and outer end. On each lateral measure four emitters (total 16 samples).
• Measurements to take:
  • Emitter flow volumes (use graduated cylinders to obtain 100–250 ml per emitter)
  • Pressures at inlet and outlet emitters of each lateral
  • Minimum pressures in pipes connected to tested laterals
  • Head losses and evidence of emitter clogging
• Performance metrics:
  • Emission uniformity (CUST) computed from the low‑quarter average emitter discharge relative to the block average (expressed as percent).
  • Discharge correction factor (f) calculated from measured minimum pressures and the emitter discharge exponent (x).
  • Sector emission uniformity (CU) approximated as CU = f × CUST.
  • Emitter exponent (x) determined from two pressure–flow measurements within the working pressure range.
• Equipment list: pressure gauge(s), “T” adapters, punch/extractor, collectors, chronometer, funnels, graduated cylinders (150–500 ml), measuring tape.

Applications

• On‑farm performance evaluation of drip and micro‑irrigation systems
• System acceptance testing after installation or rehabilitation
• Troubleshooting uneven distribution, diagnosing clogging, pressure losses
• Input for maintenance planning, retrofit decisions, irrigation design verification
• Regulatory or certification checks where hydraulic uniformity is required

Who uses this standard

• Irrigation designers and installers
• Farm managers and agronomists
• Irrigation consultants and service technicians
• Equipment manufacturers and test laboratories
• Water managers and certification bodies assessing irrigation performance

Related standards

• Normative reference: EN 13635:2001 (Localised irrigation terminology and manufacturer data)
• Bibliography includes practical guides such as Merriam & Keller, Farm Irrigation System Evaluation

Keywords: EN 15097:2006, localised irrigation, hydraulic evaluation, emission uniformity, flow-rate uniformity, emitter exponent, irrigation system evaluation, CEN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Irrigation techniques - Localised irrigation - Hydraulic evaluationTechniques d'irrigation - Irrigation localisée - Evaluation hydrauliqueBewässerungsverfahren - Örtliche Bewässerung - Hydraulische FestlegungenTa slovenski standard je istoveten z:EN 15097:2006SIST EN 15097:2007en65.060.35Namakalna in drenažna opremaIrrigation and drainage equipmentICS:SLOVENSKI
STANDARDSIST EN 15097:200701-april-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15097November 2006ICS 65.060.35 English VersionIrrigation techniques - Localised irrigation - Hydraulic evaluationTechniques d'irrigation - Irrigation localisée - EvaluationhydrauliqueBewässerungsverfahren - Örtliche Bewässerung -Hydraulische FestlegungenThis European Standard was approved by CEN on 23 September 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15097:2006: E

coefficient expressed as a percent relating the minimum rate of discharge to the average rate of discharge per plant 3.2 flow rate uniformity
coefficient expressed as a percent relating to the minimum flow rate of an emitting device to the average flow rate of the emitting device
4 Basic data for the evaluation 4.1 General data of the farm The following data should be known before the evaluation: a) situation plan; b) topographical map; c) owner; d) farm name; e) location; f) date of evaluation.
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