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Ultrasound noise policy and assessment: Canada Safety Code - 24, a Canadian perspective

机译：超声噪声政策和评估：加拿大安全代码 - 24，加拿大视角

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Ultrasound is extensively used nowadays in work and home. Scientific evidence on the health effects of exposure to ultrasound recommends that caution should be taken when using ultrasound. This leads to safety regulations established and enforced by government agencies in some countries. In Canada, early regulations respecting occupational safety and health made under Part IV of the Canada Labour Code, were substituted by Canada Occupational Health and Safety Regulations (SOR/86-304), effective March 31, 1986. Where a device that is capable of producing and emitting energy in the form of non-ionizing radiation is used in the work place, the employer shall implement the applicable document, in respect of ultrasound equipment, Safety Code - 24, dated 1990. The National Research Council Canada (NRC) is one of the government agencies who provided reviews and comments in the preparation of the Code. In this paper, the Canadian recommended human exposure limits for airborne ultrasound and its measurement techniques are discussed with the focus on challenges. To implement the safety code, a measurement system for ultrasound pressure level measurements was developed recently at the NRC. This paper presents the details of the system with the focus on measurement uncertainties. An on-site noise assessment example is given using the system.
机译：超声波现在在工作和家庭中广泛使用。关于暴露于超声波的健康影响的科学证据建议在使用超声时谨慎。这导致一些国家政府机构建立和强制执行的安全规定。在加拿大，在加拿大劳工法典第四部分尊重职业安全和卫生的早期法规，由加拿大职业卫生和安全法规（SOR / 86-304）替换，1986年3月31日。在那里有能力的设备在工作地点使用非电离辐射形式的生产和发射能量，雇主应当执行适用的文件，就1990年24日的超声设备，安全码 - 24。加拿大国家研究委员会（NRC）是在编写守则方面提供了审查和评论的政府机构之一。在本文中，加拿大推荐的空降超声波的曝光限制及其测量技术侧重于挑战。为了实现安全代码，最近在NRC开发了用于超声压力水平测量的测量系统。本文介绍了系统的细节，重点是测量不确定性。使用该系统给出现场噪声评估示例。

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