ISO 16321-2:2021 Eye and face protection for occupational use —Part 2: Additional requirements for protectors used during welding and related techniques

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Eye and face protection for occupational use —Part 2: Additional requirements for protectors used during welding and related techniques是于2021-03发布的ISO标准，适用于全球。

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Eye and face protection for occupational use —

Part 2: Additional requirements for protectors used during welding and related techniques

1 Scope

This document specifies additional material, design, performance and marking requirements for eye and face protectors designed to provide protection for the eyes and faces of persons against occupational hazards, such as optical radiation, impacts from flying particles and fragments, and hot solids during welding and related techniques. The other applicable requirements for welding protectors are given in ISO 16321-1.

This document also applies to welding protectors used in educational establishments.

This document also applies to those eye and face protectors used for occupational-type tasks that are performed similarly to an occupation, e.g. "do-it-yourself".

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.

ISO 4007, Personal protective equipment — Eye and face protection — Vocabulary

ISO 16321-1:2021, Eye and face protection for occupational use — Part 1: General requirements

ISO 18526-2:2020, Eye and face protection — Test methods — Part 2: Physical optical properties

ISO 18526-3:2020, Eye and face protection — Test methods — Part 3: Physical and mechanical properties

ISO 18526-4, Eye and face protection — Test methods — Part 4: Headforms

3 Terms a nd definiti ons

For the purposes of this document, the terms and definitions given in ISO 4007 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://w ww .iso. org/ obp

— IEC Electropedia: available at http://w ww.e lectropedia .org/ 4 Requirements

4.1 General

Only those requirements that are different from or supplement the ISO 16321-1 specifications are given in this document.

The following requirements from ISO 16321-1:2021 shall be met:

— 4.2 to 4.6: General requirements for protectors;

— 5.2: Refractive power and prismatic deviation;

— 6.1: Detection of signal lights, optional;

— 6.4: Uniformity of luminous transmittance (not for automatic welding filters);

— 7.2: Headbands and harnesses;

— 7.3: Quality of material and surface of lenses, visors and filters;

— 7.4: Basic Impact Level (for welding helmets, hand shields, frames or mountings);

— 7.7: Resistance to corrosion, where applicable;

— 7.8: Resistance to ignition;

— 7.9: Penetration of vents and gaps, where applicable;

— 7.10: High-speed impact resistance, Impact Level C, D, E, optional;

— 7.11: High mass impact, Impact Level HM, optional.

The additional requirements given in this document shall be met.

1)

Welding protectors described in this document are intended for use at temperatures from −5 °C to +55 °C. Physical and mechanical requirements are generally specified at normal ambient temperatures (23 ± 5) °C.

In order to ensure that critical aspects of protection are not compromised due to temperatures towards the extremes of the normal range of occupational environments from (−5 ± 2) °C to (+55 ± 2) °C, optical, physical and mechanical requirements at the extremes of temperature are included (sometimes optionally) in this document. These requirements can also be provided by manufacturers for validation of claims for protection at temperatures below (−5 ± 2) °C and/or above (+55 ± 2) °C.

4.2 Field of view

Welding protectors, in the as-worn position, shall have a minimum unobstructed field of view in front of each eye of 8° temporally and 15° nasally in the horizontal meridian, and 24° total in the vertical meridian, when measured at the corneal apex of the headform according to ISO 18526-3:2020, 6.2.

The field of view of peripheral awareness welding filters shall begin no less than 45° temporally from the straight ahead position of gaze. This requirement shall be measured in accordance with ISO 18526-3:2020, 6.2, by using the appropriate headform.

4.3 Requirements for welding filters

4.3.1 Transmittance requirements and scale numbers

4.3.1.1 General

Welding filters are intended to protect against radiation generated by various welding processes, which emit a significant amount of radiation in the UV, visible and IR spectral range. Requirements therefore 1) For the purposes of this document, “welding protector” is used as a synonym for welding helmets, welding hand shields, welding goggles, welding spectacles and the associated frames and mountings including welding filters.

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