Are Anti-Vibration Gloves Really Protecting You? The Truth About ISO 10819 Certification
"Unveiling the limitations of current anti-vibration glove standards and what it means for your health and safety."
In many workplaces, exposure to hand-transmitted vibration from power tools is a significant risk, leading to a range of debilitating conditions collectively known as hand-arm vibration syndrome (HAVS). HAVS can manifest as neurological, vascular, and musculoskeletal problems affecting the hands, fingers, elbows, and shoulders. Symptoms include reduced grip strength, impaired tactile sensitivity, decreased manual dexterity, and cold-induced finger blanching, all of which can severely impact a worker's quality of life and ability to perform their job.
When higher priority, more effective controls are unavailable, anti-vibration gloves are often used as a form of personal protective equipment (PPE) to mitigate vibration transmission from tool handles to workers' hands. Marketed as a solution to reduce vibration exposure, these gloves are expected to meet specific vibration transmissibility criteria outlined in the International Organization for Standardization (ISO) standard 10819 (2013). This standard is considered the benchmark for anti-vibration glove certification, promising a level of protection that workers and employers can rely on.
However, the effectiveness of anti-vibration gloves in preventing HAVS is a subject of ongoing debate. Issues arise concerning the methodologies used for glove testing and the requirements for glove design and composition as defined in ISO 10819 (2013). The actual performance of these gloves can vary significantly based on tool vibration characteristics and the individual anthropometrics of the workers using them. This article delves into the limitations of the current international standards for testing and certifying anti-vibration gloves, questioning the true degree of protection they offer. It cautions users to carefully consider both the potential benefits and drawbacks on a case-by-case basis, ensuring a more informed approach to workplace safety.
ISO 10819: Are Anti-Vibration Gloves Overrated?
While ISO 10819 is the gold standard for anti-vibration glove certification, its methodology has notable limitations. Compliance with the standard's criteria doesn't guarantee effective protection against HAVS, raising concerns about the reliability of certified gloves. Here are key issues:
- Limited Measurement Points: ISO 10819 only requires palmar measurements in the z-axis, neglecting vibration transmission to the fingers, where the primary health effects of hand-transmitted vibration occur.
- Varied Performance: Vibration transmissibility can differ significantly between the palm and fingers, meaning a glove's effectiveness is not uniform across the hand. Rezali and Griffin (2015) found that vibration transmissibility in the palm is considerably less than in the index finger, highlighting the positional differences in glove performance.
- Potential Overestimation: By ignoring vibration transmission to the fingers, the effectiveness of anti-vibration gloves may be overestimated. Hewitt et al. (2014) suggest that relying solely on palmar measurements can lead to an inaccurate assessment of a glove's protective capabilities.
Making Informed Decisions About Anti-Vibration Gloves
Despite the concerns surrounding the effectiveness of anti-vibration gloves, their use still offers hand protection from abrasions, cuts, burns, and chemical and biological exposures. These gloves also help keep hands warm and dry, contributing to HAVS prevention (Hewitt et al., 2014). Given the limitations of ISO 10819, there is a need to re-evaluate glove assessment methodologies and certification requirements. Current standards for anti-vibration glove certification may provide employers and workers with a false sense of safety. It is crucial to consider glove usage on a case-by-case basis, factoring in specific work conditions, tool types, and individual needs, to ensure the best possible protection against HAVS.