CWA 17916:2022

SLOVENSKI STANDARD
SIST CWA 17916:2022
01-november-2022
Ukoreninjenje motečih (tujerodnih) vodnih rastlin - Nadzor z metodo grabljenja s
čolnom
Rooting nuisance (alien) aquatic plants - Control by means of rake method with a boat
Ta slovenski standard je istoveten z: CWA 17916:2022
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
13.060.10 Voda iz naravnih virov Water of natural resources
SIST CWA 17916:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST CWA 17916:2022
SIST CWA 17916:2022
CEN
CWA 17916
WORKSHOP
September 2022
AGREEMENT
ICS 03.220.40; 47.060
English version
Rooting nuisance (alien) aquatic plants - Control by means
of rake method with a boat
This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the
constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the
National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held
accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
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COMITÉ EUROPÉEN DE NORMALISATION

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© 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No.:CWA 17916:2022 E
SIST CWA 17916:2022
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements imposed on parties and equipment . 7
4.1 Client . 7
4.2 Contractor . 7
4.3 External ecological expert . 8
4.4 Equipment . 8
5 Protocol . 9
5.1 Step 1 Survey of future work area and awarding the order . 9
5.2 Step 2 Survey the vegetation . 9
5.3 Step 3 Prepare a work plan . 9
5.4 Step 4 Choice of rake . 10
5.5 Step 5 Determining the direction of the work . 10
5.6 Step 6 Complete documentation before and during the work . 11
5.7 Step 7 Check the craft for the absence of plant fragments . 11
5.8 Step 8 LMRA and checklist prior to starting raking . 11
5.9 Step 9 Launching the craft . 11
5.9.1 With a slow-traffic trailer . 11
5.9.2 With a mobile crane . 11
5.10 Step 10 Start of the work . 12
5.10.1 Raking. 12
5.10.2 Clean up . 13
5.10.3 Refuelling/maintenance . 13
5.11 Step 11 Cleaning the craft. 14
5.12 Step 12 Sign the documents and complete the order . 14
Annex A (normative) Preparatory actions to determine the content of the work plan with
an ecological work protocol . 15
Annex B (informative) Rake specification . 16
B.1 Choice of rake tines . 16
B.2 Specification of the tines. 16
B.2.1 Coarse tines, 30 cm long . 16
B.2.2 Small tines, 15 cm long . 16
Annex C (normative) Checklist before starting raking . 17
C.1 Documents . 17
C.2 Maintenance . 17
Bibliography . 18

SIST CWA 17916:2022
European foreword
This CEN Workshop Agreement (CWA 17916:2022) was developed in accordance with CEN-CENELEC
Guide 29 “CEN/CENELEC Workshop Agreements – A rapid prototyping to standardization” and with the
relevant provisions of CEN/CENELEC Internal Regulations - Part 2. It was approved by a Workshop of
representatives of interested parties on 2022-06-22, the constitution of which was supported by CEN
following a public call for participation made on 2022-04-04. However, this CEN Workshop Agreement
does not necessarily include all relevant stakeholders.
The final text of CWA 17916:2022 was submitted to CEN for publication on 2022-07-15.
The following organizations and individuals developed and approved this CEN Workshop Agreement:
— Environment Agency: Jonathan Newman, Trevor Renals
— French IAS Resource Center: Alain Dutartre
— Harkboot.nl B.V.: Leon Sterk, Veronique Jeunhomme
— IUCN: Kevin Smith
— Netherlands Food and Consumer Product Safety Authority: Johan van Valkenburg
— Université Lorraine: Elisabeth Gross
— Roelf Pot Research and Consultancy: Roelf Pot
— Sportvisseij Nederland: Willie van Emmerik
— Sportvisserij Groningen Drente: Henk Mensinga
— Harkboot.nl B.V.: Leon Sterk, Veronique Jeunhomme
Attention is drawn to the possibility that some elements of this document may be subject to patent rights.
CEN-CENELEC policy on patent rights is described in CEN-CENELEC Guide 8 “Guidelines for
Implementation of the Common IPR Policy on Patent”. CEN shall not be held responsible for identifying
any or all such patent rights.
Although the Workshop parties have made every effort to ensure the reliability and accuracy of technical
and non-technical descriptions, the Workshop is not able to guarantee, explicitly or implicitly, the
correctness of this document. Anyone who applies this CEN Workshop Agreement shall be aware that
neither the Workshop, nor CEN, can be held liable for damages or losses of any kind whatsoever. The use
of this CEN Workshop Agreement does not relieve users of their responsibility for their own actions, and
they apply this document at their own risk. The CEN Workshop Agreement should not be construed as
legal advice authoritatively endorsed by CEN/CENELEC.
SIST CWA 17916:2022
Introduction
This CWA describes how a rake method with a boat should be used to remove nuisance rooting aquatic
plants. The rake method is an effective but drastic method to reduce the number of aquatic plants in
waterways, and therefore it should be applied correctly. The rake method can produce a long-lasting
solution for an excess of native rooted aquatic plants and alien rooted aquatic plants [invasive alien
species]. The rake method takes account of the wellbeing of aquatic fauna, including fishhealth, and
preventing unnecessary fish mortality.
For water-management clients, this document is intended as a guideline for having maintenance work
and the full or partial removal of aquatic plants including roots carried out in a sustainable and
ecologically responsible manner.
Contractors that comply with this standard may state this and use it to obtain an award advantage during
tenders.
SDGs
This document makes a contribution to the following Sustainable Development Goals (SDGs) that were
agreed by the United Nations:
— SDG 6 'Clean water and sanitation';
— SDG 13 'Climate action';
— SDG 14 'Life below water';
— SDG 15 'Life on land'.
SIST CWA 17916:2022
1 Scope
This document describes a rake method with a boat for removing nuisance rooting aquatic plants and for
managing their growth. It also describes the requirements for this method, and sets out how work should
be carried out in the field.
The rake method can be used for inland waterways with a depth of 0.6 m or more.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 14614, Water quality – Guidance standard for assessing the hydromorphological features of rivers
EN 15460, Water quality – Guidance standard for the surveying of macrophytes in lakes
EN 15940, Automotive fuels – Paraffinic diesel fuel from synthesis or hydrotreatment – Requirements and
test methods
ISO 15380, Lubricants, industrial oils and related products (class L) – Family H (Hydraulic systems) –
Specifications for hydraulic fluids in categories HETG, HEPG, HEES and HEPR
ASTM D8029-18, Standard Specification for Biodegradable, Low Aquatic Toxicity Hydraulic Fluids
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
operations consultant
adequately trained person in the area of aquatic ecology and vegetation who provides advice on removing
aquatic plants
NOTE 1 to entry: national legislation may exist. If the operations consultant complies with the requirements of
Article 3.4 of the Code of Conduct Nature Conservancy for Water Boards, this person may also act as an ecological
expert.
3.2
Basic Safety SCC
B-SCC
certification in the area of health and safety at work, focused on employees who work in a hazardous
environment without a leadership role
3.3
CE marking
marking for a product that complies with the applicable rules within the European Economic Area
3.4
sustainability
being financially and ecologically responsible in the long term
SIST CWA 17916:2022
3.5
ecological expert
person who is formally trained in the field and/or is recognized by an authoritative organisation as such
NOTE 1 to entry: in some countries legislation exists, e.g. in the Netherlands requirements are imposed by Article
3.4 of the Code of Conduct Nature Conservancy for Water Boards
3.6
ecological work protocol
protocol that describes how damage to protected or unprotected flora and fauna is prevented
...