Workplace Hazards Flashcards

What is 'occupational cancer' and which industries have the highest risk in the Gulf?

Answer: Cancer caused by occupational carcinogen exposure — construction (asbestos, silica, solar UV) and petrochemical industries (benzene, PAHs) carry the highest Gulf occupational cancer burden

Occupational cancers account for approximately 4% of all cancers globally (ILO estimate). In the Gulf, construction workers are exposed to asbestos (mesothelioma), silica (lung cancer), and solar UV (skin cancer). Petrochemical workers are exposed to benzene (leukaemia), PAHs, and various carcinogens. Long latency makes attribution difficult.

What is the purpose of 'biological monitoring' in occupational health?

Answer: To measure the actual absorbed dose of a hazardous substance in the body (blood, urine, exhaled air) rather than only airborne concentrations

Biological monitoring (BM) measures the internal dose of a substance that has been absorbed via all routes (inhalation, skin, ingestion), providing a more complete picture of actual exposure than air monitoring alone. Examples: lead in blood, mercury in urine, BEI (biological exposure index) for various chemicals. Critical for substances with significant skin absorption.

What is the health risk of working in cold environments below 10°C?

Answer: Hypothermia, frostbite, trench foot, increased cardiovascular stress, and exacerbation of musculoskeletal conditions — all require specific engineering controls and protective measures

Cold working environments (cold storage, outdoor work in winter, offshore work) cause: hypothermia (core temperature drop), frostbite (tissue freezing in extremities), trench foot (wet-cold tissue damage), increased blood viscosity (cardiovascular events), and worsening of musculoskeletal symptoms. Controls: insulated warm clothing, heated rest areas, work-warm rotation, buddy system.

What does 'REACH' regulation address in the Gulf context?

Answer: Registration, Evaluation, Authorisation and restriction of CHemicals — the EU framework that Gulf importers and manufacturers increasingly align with to manage chemical safety

REACH (EU Regulation EC 1907/2006) requires chemical manufacturers/importers to register substances with ECHA, identify hazards, assess risks, and communicate safety information through the supply chain. Gulf states importing EU goods or following international standards align chemical management with REACH principles, and the GCC Chemical Safety Law incorporates similar frameworks.

What is 'secondary drowning' and why is it relevant to Gulf offshore and marine workers?

Answer: Secondary (delayed) drowning occurs hours after a water submersion event when inhaled water causes delayed pulmonary oedema — requires emergency medical assessment after any water immersion incident

After near-drowning, even small amounts of water in the lungs can cause delayed inflammatory pulmonary oedema (secondary drowning/dry drowning) hours later, causing respiratory failure. Gulf offshore workers and maritime personnel must be assessed medically after any water immersion incident, even if apparently well at the time.

What are 'fumes' and what health risks do they present compared to dust?

Answer: Fumes are solid particles (<1 micron) formed by condensation of vaporised metal/material — they penetrate deeper into the lungs than most dusts and are more respirable

Fumes are ultrafine solid particles (typically 0.001–1 micron) formed by condensation of volatilized material (welding fumes, lead fumes, zinc oxide from galvanizing). Their extremely small size means they penetrate to the alveolar level. Welding fumes are classified as Group 1 carcinogens. Fumes cause lung fibrosis, pneumoconiosis, metal fume fever, and cancer.