Webinar Recording – The Validity of Linear Non-Threshold (LNT) Model and its Impact on Derivation of Exposure Limits – Recording 23/02/24 – Page 2

Webinar Recording – The Validity of Linear Non-Threshold (LNT) Model and its Impact on Derivation of Exposure Limits – Recording 23/02/24

Presenter(s): Presenter/s: Ian Firth , Chair David Jowett

Recorded 23rd Feb 2024

Winner – 2023 AIOH Conference 3M Best Paper Award.

This paper discusses the controversy over the use of the linear non-threshold (LNT) model and presents the case for the existence of a threshold of effect for both asbestos and crystalline silica. The existence of threshold affect does not support the suggested need to further reduce the current OELs for these substances and others.

Ian Firth Ian has over 45 years work experience, 34 of them with a multi-national mining and minerals company. A quarter of his work experience is in environmental sciences and the rest in occupational hygiene. Occupational hygiene work has involved workplace environment assessment (dust, fume, noise, etc) in hard rock mining settings in PNG and Indonesia, and in smelting in the zinc/lead and aluminium industries.

During the last 15 years of his career with Rio Tinto, he was the corporate Principal Adviser – Occupational Health, conducting audits and reviews of world-wide operations and providing coaching and training to working hygienists as well as standards and occupational hygiene guidance development. For the past 8 years he has been the Principal Consultant and Director of IC Firth OHs Solutions Pty Ltd. Ian has a MSc in Applied Biology (toxicology) and is a Fellow of the Australian Institute of Occupational Hygienists (AIOH) as well as being a Certified Occupational Hygienist (COH)®. He was also chairperson of the AIOH Workplace Exposure Assessment Committee for 22 years.

He has been involved in the authorship of a number of AIOH publications covering occupational hygiene risk assessment, workplace monitoring and statistics, and heat stress.

Please note: A minor technical issue occurred at 9 minutes and 10 seconds into the presentation. It has since been rectified through editing to ensure a seamless viewing experience without any disruptions.

Posted on 23/02/2024

Webinars

The presentation discusses the wide use of solvents in the workplace and often used in large quantities; used for dry-cleaning, in paints and varnishes, pharmaceuticals, degreasers, adhesives, glues, printing inks, pesticides, cosmetics, and household cleaning products. This presentation will discuss the exposure, absorption, metabolism, and toxic effects of solvents.

Webinars

Nuclear submarines, Radioactive waste, Rare earths and Nuclear power… Emerging opportunities for Occupational Hygienists

This talk will be wide ranging from the immediate resource impacts of nuclear submarines to the longer term philosophical impacts of nuclear accidents such as Chernobyl and Fukushima. The talk will provide an international and national perspective on workplace and environmental radiation management and the potential opportunities for AIOH members in this space.

Webinars

Take Charge of Your Career – Launching the AIOH Career Pathway

The pathway to becoming a senior professional can be different for every occupational hygienist. While there is no “right” or “wrong” way to create a successful career in occupational hygiene, the attributes of education, technical knowledge, service and leadership all form a crucial part of leaving a legacy.

Webinars

Practical Guide to Welding Fume Control

April 2022, The presentation examines the dangers of welding fume and the different product control methods - the advantages and disadvantages of each.

Webinars

Update on Activities of the Asbestos Safety Eradication Agency (ASEA)

27 May 2022, Georgia will be speaking on the various ASEA activities with a focus on Occupational Hygiene.

Webinars

Safe Work VIC – Silica Related Activities

This webinar provides a comprehensive update for occupational hygienists and OHS professionals on the Work Safe VIC Silica legislation.

Webinars

What’s in a Code of Practice?

The presentation provides a regulator's view on policy design and codes of practice in the WHS landscape.

Webinars

Masterclass real-time monitoring

A practical guide.

Webinars

Weld Fume, Hazards and Risks

Health hazards of welding fume is attracting more interest and this webinar provides an informed update on welding applications and impacts on exposure standards.

Webinars