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Description
Flashcards by Camilo Soriano, updated more than 1 year ago
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Created by Camilo Soriano
almost 10 years ago
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| Question | Answer |
| It is the minimum level of sound that can be heard by humans. Also called the threshold of pain. | 1dBA |
| Term for any unnecessary sound. | Noise. |
| It is the minimum level of sound perceived as painful by the ears. Also called the Threshold of Pain. | 140dBA |
| Who regulates the Noise Regulation Controls? | OSHA |
| 6 types of Noise Regulation Controls | Engineering Controls Administrative Controls Audiometric Evaluation Adequate Education and training PPE Noise Programs |
| How is sound made? | Due to the changes in air pressure |
| Noise regulation control that involves any change in the physical set up of the workplace. | Engineering Controls |
| 3 Common Engineering Controls | 1. Reduce noise at the source of noise 2. Reduce the noise in the transmission path 4. Reduce the reverberation time |
| Noise Regulation Control that keeps the employees away from noise or minimize regular exposure to noise. | Administrative Control |
| How to reduce noise at the source of noise? | Apply mufflers |
| How to reduce the noise in the transmission path? | Apply barriers/Enclosures |
| How to reduce the reverberation time? | Apply sound absorbent material |
| Which part do the hearing starts? | Outer ear |
| They are the 3 tiny bones that amplify the sound and send the sound waves to the inner ear and into the cochlea. | Ossicles |
| 3 Ossicles | Malleus Incus Stapes |
| Example on Noise Administrative Control. | Apply Shifting of Employees |
| Where are the legal responsibilities of employers and employees contained? | South Australian Occupational Health, Safety and Welfare Regulations 1995. |
| Regulations of the Safety and Welfare Regulations 1995 | >information that must be provided about a machine that may create an unsafe level of noise >the prescribed level of noise that may be emitted by a machine >the maximum noise level, that a worker with unprotected hearing may be subjected to over 8 hour period >the maximum noise level that an unprotected worker may be subjected to at any time |
| The prescribed level of noise in the workplace | 85dBA |
| The maximum noise level for a worker with unprotected hearing. | 90dBA |
| Maximum noise level for unprotected worker subjected to work at any time. | 140dBA |
| Percentage of all noise-related injuries that are result of long-term exposure to sounds. | 98% |
| Percentage of all noise-related injuries that are result of a single of sudden sound. | 1.4% |
| Percent of all noise related injuries that incurred in manufacturing industries. | 48.7% |
| Percent of noise injuries that are incurred in the construction industry. | 10% |
| Percent of noise injuries that are incurred in the transport and storage industry. | 10% |
| Two root words for toxicology. | toxicos and logos |
| What does toxicos means? | poisonous |
| It is the study of the adverse effects of chemicals on living organisms. | Toxicology |
| The study of symptoms, mechanisms, treatments and detection of poisoning especially the poisoning of people. | Toxicology |
| Factors affecting the severity of toxic in the human body. | Routes of entry dosage level physiological condition environmental condition physical properties of the chemical |
| Factors affecting the severity of toxic which means the passageway of chemicals. | Routes of Entry |
| Factors affecting the severity of toxic in the human body which means the volume of chemicals. | dosage level |
| 5 common hazardous substances/components in Electronics Workbench | soldering wire solvents ceramics PCB filings rosin |
| It contains lead which contains lead which can cause lead poisoning | soldering wire |
| 5 effects of lead poisoning | reduce intelligence impair memory hearing problems high blood pressure constipation |
| 2 countermeasures for lead poisoning | use solder vacuum use PPE (solder mask) |
| Liquid based substances that can be very hazardous to the excretory system once it penetrated through skin. | Solvents |
| Give 2 examples of solvents. | Denatured alcohol Ferric Chloride. |
| Mostly found in capacitors and contains Beryllium Oxide which is highly poisonous. | Ceramics |
| Debris from PCB once cut or rubbed by sand paper that can cause asthma. | PCB Filings. |
| It is used as flux extracted from the resinous acid of pine trees, Flux is mixed with the solder in order to achieve effective coupling of metals and can cause skin diseases. | Rosin |
| Meaning of the MSDS acronym. | Material Safety Data Sheet |
| It is an important tool for chemical hazard communication. It is also the handbook of chemicals in the workplace. | Material Safety Data Sheet |
| 9 basic parts/contents of MSDS | >boiling point >freezing point >flashpoint >toxicity >reactivity >health effects >first aid >storage and disposal >spill handling |
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