National foreword

This British Standard is the UK implementation of ISO 24142:2026.

The UK participation in its preparation was entrusted to Technical Committee MCE/3/-/11, Food Industry Machines.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2026.

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

ISO draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 293, Feed machinery.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

Introduction

This document is a type-C standard as stated in ISO 12100 [1].

This document is of relevance, in particular, for the following stakeholder groups representing the market players with regard to machinery safety:

machine manufacturers (small, medium and large enterprises);
health and safety bodies (e.g. regulators, accident prevention organizations, market surveillance).

Others can be affected by the level of machinery safety achieved with the means of the document by the above-mentioned stakeholder groups:

machine users/employers (small, medium and large enterprises);
machine users/employees (e.g. trade unions, organizations for people with special needs);
service providers, e.g. for maintenance (small, medium and large enterprises);
consumers (in case of machinery intended for use by consumers).

The above-mentioned stakeholder groups have been given the opportunity to participate at the drafting process of this document.

The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document. These hazards are specific to machinery used in feed mills and feed processing facilities.

When requirements of this type-C standard are different from those which are stated in type-A or type-B standards, the requirements of this type-C standard take precedence over the requirements of the other standards for machines that have been designed and built according to the requirements of this type-C standard.

1 Scope

This document specifies safety aspects for the design of machinery used for production of formulated feed in feed processing mills. Relevant hazards are identified with recommended solutions so as to provide the best options for the safe design during the life cycle of the machine types identified. Existing standards for safe machine design are not duplicated as machinery used for the production of feed for animals has been significantly addressed by other industries. Significant hazards that are unique to machinery found in feed mills and feed processing facilities are addressed in this document. Excluded from this document are explosive environment, noise testing, and hazards not inherent to the design of the machines typically found in feed mills.

This document excludes machinery intended for liquid feed, and wet and semi-moist pet foods. This document excludes machinery intended for the processing of food for human consumption.

This document is not applicable to machinery intended for feed processing mills manufactured before the date of its publication.

2 Normative references

3 Terms and definitions

4 Safety requirements and/or protective/risk reduction measures

4.1 General

4.2 Mechanical and electrical systems

4.3 Rejected materials

4.4 High pressure fluids and steam and extreme temperature

4.5 Reduction of fire and explosion risks

4.6 Reduction of slip, trip, and fall hazards

4.7 Noise reduction

4.8 Confined spaces

5 Verification of safety requirements and/or protective/risk reduction measures

5.1 Mechanical and electrical systems

5.2 High pressure fluids and steam and extreme temperature

5.3 Fire and explosion

5.4 User safety and stability

6 Information for use

6.1 General

6.2 Marking

6.3 Instruction handbook

Bibliography