Ancient Use of Mirrors in Warfare The famous ancient Greek mathematician Archimedes reportedly used large concave mirrors during the war with Rome. By arranging six large concave mirrors in a circular pattern, he focused sunlight onto Roman ships, setting them on fire and securing victory. This is an example of using the principles of mirrors […]
Understanding the Principle of Mirrors to See ‘Safety’ 더 읽기"
▣ Types of Lights We Use Fluorescent lamps are light bulbs that contain mercury sealed in a vacuum glass tube, with the inner walls coated with phosphorescent material. They emit bright white light by producing ultraviolet rays from mercury discharge, which then react with the phosphorescent material to produce visible light. Recently, in addition to
Dangerous broken fluorescent lamp 더 읽기"
▣ 우리가 사용하는 전등의 종류 ‘형광등’은 진공 유리관에 수은을 봉입하고 그 내벽에 형광물질을 바른 전등입니다. 형광등은 흰색의 밝은 빛을 내며, 수은의 방전으로 생긴 자외선이 형광 물질과 반응하면서 가시광선을 방출해 빛을 냅니다. 최근엔 흰색뿐만 아니라 주광색, 전구색 등 따뜻한 느낌의 빛을 내는 형광등과 튜브형태가 아닌 삼파장 전구도 많이 쓰이고 있습니다. 10년 전만해도 형광등이 가장 많이 사용되는
▣ Painting Work for Indoor and Outdoor Environments Painting work involves creating a coating on the surface of construction materials for purposes such as preservation, anti-corrosion, insect prevention, fireproofing, and decoration. This process imparts moisture resistance, weather resistance, and chemical resistance to the materials. Common painting materials include paint, lacquer, varnish, and lacquer. The work
Safety Rules for Interior and Exterior Wall Painting Workers 더 읽기"
▣ 실내외에서 진행하는 도장 작업 도장 작업은 건설 구조물 재료 표면에 방부·방청·방충·방화나 장식을 목적으로 도막을 형성시켜 내습성·내후성·내약품성을 갖게 만드는 작업이다. 도장 재료는 페인트, 라카, 바니스, 옻칠등을 사용하고, 일반적으로는 롤러칠, 뿜칠, 붓칠 등의 공법으로 작업한다. 도장 작업은 바탕 처리 후 도장 및 양생의 순서로 진행하는데 ‘칠’은 일반적으로 초벌, 재벌, 정벌도장의 3공정으로 한다. 도장 작업은 구조물·목재면의 내부
≪ Shift workers are employees who work in shifts divided into two or more groups, each working at different times. Since shift workers may perform night shifts between 10 PM and 6 AM the following day, they are at risk of sleep disorders, chronic fatigue, high blood pressure, and cerebrovascular diseases due to disruptions in
Safety Guidelines for Shift Workers 더 읽기"
The “Humidifier Sanitizer Incident,” where consumers who used commercially purchased humidifier sanitizers suffered deaths or critical lung diseases, and the “Gumi Hydrogen Fluoride Leak Accident,” where a leak of ten tons of hydrogen fluoride gas at a factory handling the chemical resulted in the deaths of five workers and injuries to eighteen others, illustrate how
German Chemicals Management Act (REACH) 더 읽기"
Landscaping work involves tasks such as planting and nurturing flowers or trees in parks, around buildings, and in gardens, as well as transporting equipment and trees and digging holes for planting. During these processes, workers may be exposed to risks such as cutting, hitting, and noise while using equipment such as chainsaws and brush cutters.
Safety Guidelines for Using Brush Cutters and Chainsaws 더 읽기"
▣ Training for Anger Management The purpose of managing anger is to actively pursue a happier life. Anger can have productive and necessary functions, so transforming anger positively is the true way to manage it. Here are some techniques used for anger management when you feel angry. Thought Stopping: When you experience an event that
Managing Mental Health in Emotional Labor 더 읽기"
▣ 분노 조절 훈련법 분노를 다스리는 목적은 적극적으로 행복한 삶을 추구하는데 있습니다. 분노는 생산적이고 필요한 기능도 가지고 있기 때문에 분노를 긍정적으로 바꾸는 것이 진정한 의미에서 분노를 다스리는 방법이다. 분노를 느낄 때 분노 조절 기법으로 사용되고 있는 몇 가지 방법을 소개합니다. 생각 중단하기: 자신을 자극하는 사건을 경험하면 분노하게 되고, 끊임없이 생각하게 되는데 이것은 오히려 분노를 더 증폭시킬
A “vaccine” is an antigen artificially administered to the body to develop immunity against infectious diseases. The principle of vaccines first appeared in the historical record of the Peloponnesian War by the Greek historian Thucydides in 430 BC. The record noted that only those who had recovered from an infectious disease could nurse others suffering
Vaccines Beginning with Smallpox 더 읽기"
▣ Using Contact Lenses Safely: Tips and Precautions Contact lenses offer convenience and enhance appearance during activities such as sports and travel, compared to glasses. However, the rising number of contact lens wearers, especially among students and young women, underscores the importance of careful use and maintenance due to potential side effects. Since contact lenses
Precautions for Contact Lens Care 더 읽기"
HEALTH AND SAFETY POLICY (a) Outline the purpose of the three main sections of an organisation’s health and safety policy. (b) Give reasons why the health and safety policy should be signed by the most senior person in an organisation, such as a Managing Director or Chief Executive Officer. · Part (a) of this question
Policy – THE PURPOSE AND IMPORTANCE OF SETTING POLICY FOR HEALTH AND SAFETY 더 읽기"
In the “Korean Industrial Safety and Health Act,” noise work is defined as generating noise levels exceeding 85dB during an 8-hour workday. Working in environments with excessive noise levels poses health risks such as noise-induced hearing loss, especially with prolonged exposure. In areas where excessive noise is present, it is imperative to wear hearing protection.
Noise – Hearing Protection Devices 더 읽기"
MANAGEMENT SYSTEM Describe the main components of a health and safety management system The main components of a management system are: • Policy, • Organisation • Planning arid Implementation. • Measuring performance, • Reviewing Performance, • Audit and • Continuous Improvement. The components are explained as follows: Policy – should contain: • Protecting the safety
Policy – THE KEY ELEMENTS OF A HEALTH AND SAFETY MANAGEMENT SYSTEM 더 읽기"
▣ The safe light in your hand, the flashlight A flashlight is a portable lighting device that emits light using a bulb and batteries. In the United States, it’s called a flashlight, while in the United Kingdom, it’s referred to as a torch. The invention of the flashlight has revolutionized human life. ▣ The Birth
Where did flashlights come from? 더 읽기"
In the event of an occupational accident at an industrial site, whether to apply for workers’ compensation or pursue civil litigation is a decision between the employer and the injured party. However, systems for realizing the rights of workers under workers’ compensation, including the types of compensation and payment methods, often favor receiving compensation through
Work-Related Injury – Internal Handling & Industrial Accident Processing 더 읽기"
2023년 11월 14일 공포, 시행된 「산업안전보건기준에 관한 규칙」개정안은 산업 현장의 환경변화를 반영해 현행 규정의 운영상 나타난 미비한 점을 개선하고 보완했습니다. 이번 개정안에서는 안전난간 및 비상구 설치 기준, 사전조사 및 작업계획서 작성, 고소작업대 작업시 안전조치, 거푸집 및 동바리 안전 기준이 개선되었습니다. 개정안 주요 내용 1.안전난간·비상구 설치 기준 개선(2제13조,제17조) – 중간난간대 설치 예외 대상 개선: 난간 기둥이
2024년 「산업안전보건기준에 관한 규칙」 주요 개정안 알아보기 더 읽기"
Plastic processing products are made by injecting synthetic resin into molds mounted on injection molding machines, allowing it to solidify. The injection molding process involves mold closure, injection, packing, cooling, mold release, and product separation. After injection molding, products undergo processes such as trimming, inspection, and assembly to complete them. During these stages, there are
Risks and Preventive Measures in Plastic Processing Manufacturing by Process 더 읽기"
The Siren Named After the Sirens of Greek Mythology Auxiliary Instrument for the Organ A siren is a device that emits a sharp sound to signal or alert people to danger or emergencies. It is highly effective in notifying many people about disasters and hazards. The origin of the siren dates back to around 1799,
The Origin of the Siren (Greek Mythology) 더 읽기"
