CEN/TC 332/WG 4 - Fume cupboards

This document specifies the characteristics of fume cupboards, as defined in EN 14175-1, for work with unsealed radioactive materials with specific requirements regarding radiation protection. It does not apply to fume cupboards, glove boxes or hot cells (shielded radiation containment cells which can incorporate fume extraction).
The purpose of this document is to set out rules for the design and testing of fume cupboards for work with unsealed radioactive materials, in order to provide guidelines for the manufacturer, planner, installer, operator, assessor and the authorities.
This document only covers bench type fume cupboards.

This document applies to an articulated extraction arm used as a local exhaust device in laboratories and comprised of a capture device (receiving, enclosing or capture hood, nozzle or flat screen) connected to an extraction arm which is articulated ducting to move air from the capture device to discharge.
This standard specifies:
- a method for type testing;
- a method to assess the three-dimensional capture zone of local exhaust devices mounted on an articulated extract arm;
- a method for assessing the emission release capture efficiency of local exhaust devices connected to an articulated extract arm and its robustness to a challenge of air disturbance directly in front of and in close proximity to the capture hood and release source;
- a method for establishing the reachable, three-dimensional workspace of local exhaust devices mounted on an articulated extract arm by measuring the possible positions of the opening of the device;
- a method for measuring the pressure drop and noise level in the type test;
- instructions for marking the device and recommended content of information for use;
- guidance for use describing the limitations of local exhaust devices with articulated extract arm for different airflow rates establishing the capture zone;
- guidance on selection, installation, commissioning, and control testing of articulated extract arms and their local exhaust ventilation systems.
The scope does not include filtration requirements and impact of fully or partly recirculation of the airflow extracted by an articulated extract arm.

This document applies for the planning, design, installation and commissioning of ventilation systems in laboratories. It also applies for scientific classrooms in schools when equipped with a ventilation system.
The application of this document depends not on the term laboratory in its narrower sense but this document also applies also for laboratory-related rooms in which work with dangerous or health hazardous substances is performed.

This document specifies type test methods for the assessment of safety and performance of fume cupboards connected to an exhaust air system. Relevant requirements are specified in EN 14175-2.
For terms and their definitions, EN 14175-1 applies. For safety and performance requirements of fume cupboards, EN 14175-2 applies. For on-site test methods of fume cupboards, EN 14175-4 applies. For the type testing and on-site testing of variable air volume (VAV) fume cupboards, EN 14175-6 applies in addition to this standard. For fume cupboards for high heat and acidic load, EN 14175-7 applies.
For the testing of recirculation filtration fume cupboards, EN 17242:-  applies.
For the testing of microbiological safety cabinets, EN 12469 applies.

This document applies for
- fume cupboards for high heat load
- fume cupboards for handling of perchloric acid
- fume cupboards for handling of hydrofluoric acid
- fume cupboards for high heat load in combination with acidic digestions.
This document applies in conjunction with EN 14175-1 to EN 14175-4 and, where appropriate, to EN 14175-6 and specifies supplementary information relevant to vocabulary, safety and performance requirements, type test methods, on-site test methods and marking of the listed special purpose fume cupboards.
NOTE   EN 14175-6 applies for variable air volume fume cupboards. Experience shows that fume cupboards for high heat  load offer much safer working conditions when operated with fixed air volume flow.
This document does not apply for microbiological safety cabinets, recirculatory filtration fume cupboards and fume cupboards for carrying out work on radioactive materials.

This document specifies requirements and type test methods for VAV systems. It also specifies additional requirements to those in EN 14175-2 and additional test methods to those in EN 14175-3 and EN 14175-4 for fume cupboards with VAV systems (VAV fume cupboards).
For terms and definitions, EN 14175-1 applies. For safety and performance requirements of fume cupboards, EN 14175-2 applies. For type testing of fume cupboards with preset air volume flow, EN 14175-3 applies. For on-site test methods of fume cupboards already installed in a laboratory, EN 14175-4 applies.

This Technical Specification specifies a selection of recommendations for the installation and maintenance of fume cupboards in accordance with EN 14175-2 and EN 14175-6. The maintenance recommendations can be applicable to other fume cupboards as well.

This Part 4 of the European Standard specifies a selection of on-site test methods for the following fume cupboards:
- Fume cupboards designed in accordance with Part 2 of this European Standard and type tested in accordance with Part 3 of this European Standard.
- Fume cupboards designed in accordance with Part 2 of this European Standard and not type tested.
- General purpose fume cupboards designed in accordance with Part 2 of this European Standard which are used under  customer-specific conditions, such as for the handling of very toxic substancies or bulky load of the work space.
The test methods are designed to be used at the place of installation of the fume cupboard, usually a laboratory. They are used for commissioning after installation, maintenance and qualification purposes.

This part 1 of EN 14175 provides terms and definitions for fume cupboards (see 3.1). Corresponding terms in eight European languages are given in the normative annex A.
For safety and performance requirements of fume cupboards EN 14175-2 applies.
For type testing of fume cupboards EN 14175-3 applies.
For microbiological safety cabinets EN 12469 applies.
This part of EN 14175 does not address recirculatory filtration fume cupboards or devices used as animal accomodation.

This part 2 of EN 14175 specifies safety and performance requirements and objectives for general purpose fume cupboards. In addition, dimensions and marking of general purpose fume cupboards are specified as well as requirements on the product manual to be supplied with fume cupboards.
Recommendations on the evaluation of conformity of general purpose fume cupboards with the requirements of this part 2 of EN 14175 are given in the informative annex A.
For terms and definitions of fume cupboards  EN 14175-1 applies. For  type testing of fume cupboards  EN 14175-3 applies. For microbiological safety cabinets EN 12469 applies.
This part of EN 14175 does not address recirculatory filtration fume cupboards or fume cupboards for carrying out work on radioactive materials. For special purpose fume cupboards  other requirements may apply.

This part of the European Standard EN 14175 specifies type test methods for the assessment of safety and performance of fume cupboards. Relevant requirements are specified in Part 2 of this European Standard.
For terms and their definitions EN 14175-1 applies. For safety and performance requirements of fume cupboards EN 14175-2 applies. For on-site test methods of fume cupboards EN 14175-4 applies. For the type testing and on-site testing of variable air volume (VAV) fume cupboards, EN 14175-6 applies in addition to this standard.
For the testing of microbiological safety cabinets EN 12469 applies.

This document applies to Recirculatory Filtration Fume Cabinets (RFFC).
Recirculatory Filtration Fume Cabinets are devices intended to protect their users by means of:
—   the ability to contain  hazardous concentrations or quantities of airborne contaminants ;
—   the ability to remove hazardous concentrations or quantities of airborne contaminants from air exhausted from within the fume cabinet by means of filtration before the air is recirculated (to the room in which the fume cabinet is located).
This document includes design and manufacturing requirements together with type testing procedures.
For the use of a mixture of chemicals a risk assessment shall be performed with the help of the instructions for use in order to select the appropriate filter(s).
For special applications and usage such as CMR substances, local regulation may apply and shall be followed. These local regulations may result on restriction of usage.
This standard is not intended to address fume cupboards, or devices used as animal accommodation. For fume cupboards the standard series EN 14175 applies. For Microbiolical safety cabinets EN 12469 applies.

This Technical Report gives guidance regarding the selection, specification, installation and use of capture devices with articulated extract arm (abbreviated: AEAs) in laboratories. The informative material provided includes the general concept of AEAs, the variety of sub-types available, system installation issues, performance metrics and operational factors such as use, maintenance and training.

Part 5 of this European Standard specifies type test methods for the assessment of safety, robustness and performance of fume cupboards.