Quartz is a colorless, odorless solid found in rocks. It is insoluble in water and has a melting point of 1000°C. Quartz is the most common crystalline form of silica
Assembly adopts revised recommendations for entering enclosed spaces on ships. Guidelines aim to prevent casualties from oxygen-depleted, toxic or flammable atmospheres. Recommendations apply to all types of ships and provide guidance to operators
Breathing apparatus enables breathing in hostile environments or assists breathing. HSE distinguishes between respirators and breathing apparatus. Apparatus can be classified by gas source, environment, circuit type, and purpose
PELs are legal limits for employee exposure to chemicals and noise. OSHA established PELs after 1970 Occupational Safety and Health Act. Chemical regulations often measured in milligrams per cubic meter (mg/m³)
Sparring is a free-form fighting with rules to minimize injuries. It differs from competition fights in its educational focus. Some schools grant sparring permission at entry, others require waiting period
Sokalan CP5 granules contain acrylic acid and maleic anhydride. Product is used as formulation auxiliary for chemical industry. No specific hazards identified according to GHS or EC Directives