7.2 Official Industrial Safety and Warning Signs (산업안전보건표지)
Key Takeaways
- South Korea's Occupational Safety and Health Act classifies industrial safety signs (산업안전보건표지) into four official standardized categories: Prohibition Signs (금지표지), Warning Signs (경고표지), Mandatory Action Signs (지시표지), and Information/Emergency Signs (안내표지).
- Prohibition signs (금지표지) feature a circular red band with a diagonal slash on a white background, strictly forbidding dangerous actions such as 출입 금지 (No Entry), 화기 금지 (No Open Flames), and 사용 금지 (Do Not Use).
- Warning signs (경고표지) utilize equilateral yellow triangles with black borders or red diamond borders for hazardous chemicals, alerting workers to risks like 인화성 물질 경고 (Flammable), 고압 전기 경고 (High Voltage), and 매달린 물체 경고 (Suspended Load).
- Mandatory signs (지시표지) utilize solid blue circles instructing required PPE usage (e.g. 안전모 착용, 보안경 착용), while Information signs (안내표지) use green rectangles indicating life-safety installations including 비상구 (Emergency Exit), 구급약품 (First Aid Kit), and 세안장치 (Emergency Eye Wash).
7.2 Official Industrial Safety and Warning Signs (산업안전보건표지)
Core Vocational Reality: Industrial safety signs (산업안전보건표지) communicate prohibitions, warnings, mandatory actions, and emergency information. Learn the official shape-color-meaning relationship and then obey the exact caption and site instruction. Do not infer a legal penalty or required PPE beyond what the posted sign and procedure state.
1. Statutory Signage Architecture & Color Schemes (4대 표지 체계)
Korean industrial signage is divided into four distinct regulatory categories. Each category communicates a specific level of authority, hazard, or action using defined geometric silhouettes and chromatic codes:
| Category (분류) | Geometric Shape | Border & Pictogram Color | Field / Background Color | Statutory Purpose & Meaning |
|---|---|---|---|---|
| 금지표지 (Prohibition) | Circular ring with diagonal slash | 빨간색 원 및 사선, 검정색 그림 | 흰색 (White) | Identifies conduct prohibited at the posted location; follow the sign and site safety procedure. |
| 경고표지 (Warning) | Equilateral triangle (or GHS red diamond) | 검정색 테두리 및 그림 (또는 빨간 다이아몬드) | 노란색 (Yellow) 또는 흰색 | Alerts workers to inherent workplace hazards, toxic substances, or physical danger zones. |
| 지시표지 (Mandatory) | Solid filled circle | 흰색 그림 (White glyph) | 파란색 (Blue) | Mandates the compulsory wearing of specified personal protective equipment or operational actions. |
| 안내표지 (Information) | Square or horizontal/vertical rectangle | 흰색 그림 및 글자 | 녹색 (Green) | Indicates emergency egress pathways, first aid facilities, safety equipment, and medical stations. |
2. Prohibition Signs (금지표지): Red Circle with Slash
Prohibition signs indicate behaviors that workers are strictly forbidden from performing under threat of severe injury or disaster. The red diagonal slash signifies an absolute ban:
| Korean Sign Caption | Hanja / Phonetics | English Designation | Primary Worksite Placement | Specific Risk Addressed |
|---|---|---|---|---|
| 출입 금지 | 出入 禁止 | No Entry / Unauthorized Access Prohibited | Transformer vaults, crane swing radii, demolition zones | Prevents unauthorized workers from entering life-threatening operating perimeters. |
| 보행 금지 | 步行 禁止 | No Pedestrian Traffic / Walking Prohibited | Forklift travel lanes, heavy gantry runways | Prevents pedestrian workers from being struck by heavy mobile industrial machinery (지게차). |
| 금연 | 禁煙 | No Smoking Strictly Enforced | Chemical warehouses, paint spray rooms, wood shops | Eliminates open cigarette sparks from igniting volatile solvent vapors or combustible dust. |
| 화기 금지 | 火氣 禁止 | No Open Flames / No Sparks Allowed | LPG fuel stations, acetylene cylinder storage, fuel tanks | Forbids matches, lighters, grinding sparks, and welding torches near combustible atmospheres. |
| 물체 이동 금지 | 物體 移動 禁止 | Do Not Move Objects | Precast concrete curing beds, precision leveled jigs | Prohibits shifting structural components or scaffolding members during delicate stabilization. |
| 탑승 금지 | 搭乘 禁止 | No Riding / Personnel Riding Prohibited | Material freight lifts (화물용 리프트), belt conveyors | Strictly forbids riding on equipment engineered exclusively for uncrewed cargo transit. |
| 사용 금지 | 使用 禁止 | Do Not Use / Out of Service Tag | Malfunctioning punch presses, frayed extension cords | Tags out broken, ungrounded, or repairing machines until recertified by maintenance staff. |
3. Warning Signs (경고표지): Yellow Triangle & Hazard Icons
Warning signs feature an equilateral yellow triangle with a thick black border and a central black pictogram (or a red diamond for GHS toxic chemicals). They notify workers of persistent environmental hazards:
| Korean Sign Caption | English Warning Title | Visual Graphic Icon | Industrial Workplace Threat & Worker Protocol |
|---|---|---|---|
| 인화성 물질 경고 | Flammable Material Warning | Flame rising from a horizontal line | Gasoline, thinners, and solvent paints with low flashpoints; keep heat and sparks away. |
| 산화성 물질 경고 | Oxidizing Material Warning | Flame burning on a circular ring | Chemical compounds that release oxygen and accelerate explosive combustion. |
| 폭발성 물질 경고 | Explosive Material Warning | Exploding object bursting into fragments | Compressed gas cylinders and unstable chemicals subject to blast fragmentation upon impact. |
| 급성 독성 물질 경고 | Acute Toxicity Warning | Skull and crossbones symbol | Highly lethal toxic chemicals that cause systemic poisoning or death if inhaled or absorbed. |
| 부식성 물질 경고 | Corrosive Substance Warning | Liquid splashing from tubes onto hand & bar | Strong acids (황산, 염산) and caustic alkalis that dissolve human tissue and metal structures. |
| 고압 전기 경고 | High Voltage Warning | Jagged electric lightning arrow | High-voltage distribution panels (배전반) and transformers; contact causes fatal electrocution. |
| 매달린 물체 경고 | Suspended Load Warning | Hook carrying a heavy weight overhead | Overhead factory cranes and hoists (호이스트); workers must never walk underneath suspended loads. |
| 낙하물 경고 | Falling Objects Warning | Rocks/debris falling from an elevated plane | High-tier warehouse racking or exterior scaffolding; requires mandatory hard hat protection. |
| 고온 경고 | High Temperature Warning | Thermometer immersed in heat waves | Foundry melting furnaces, autoclave boilers, and steam pipes causing deep thermal burns. |
| 저온 경고 | Low Temperature Warning | Thermometer immersed in ice crystal | Cryogenic gas storage facilities and commercial sub-zero industrial freezers (냉동창고). |
| 몸 균형 상실 경고 | Loss of Balance Warning | Human silhouette slipping on a slope | Slick gangways, oil-slicked shop floors, and uneven catwalks requiring firm 3-point footing. |
| 위험 장소 경고 | General Danger Zone Warning | Heavy black exclamation mark (!) | Complex industrial workstations presenting combined chemical, mechanical, and electrical hazards. |
4. Mandatory Action Signs (지시표지): Solid Blue Circle
Mandatory action signs communicate compulsory rules. The solid blue background with white graphics instructs workers that specific safety measures or PPE are mandatory before performing a task:
| Korean Sign Caption | Hanja / Phonetics | Mandated Worker Action | Typical Workstation Context |
|---|---|---|---|
| 보안경 착용 | 保眼鏡 着用 | Compulsory wear of safety goggles | Lathe turning (선반), surface grinding (연마), and chemical dilution tanks. |
| 방독마스크 착용 | 防毒마스크 着用 | Compulsory wear of chemical vapor mask | Organic solvent spray booths, electroplating dipping lines, pesticide spraying. |
| 방진마스크 착용 | 防塵마스크 着用 | Compulsory wear of particulate dust mask | Concrete cutting, wood sawing, metal sandblasting, and dry bulk powder bagging. |
| 귀마개 착용 | 귀마개 着用 | Compulsory wear of hearing protection | Metal stamping press shops, forging foundries, engine dyno rooms (>85 dB). |
| 안전모 착용 | 安全帽 着用 | Compulsory wear of protective hard hat | Construction sites, shipyard fabrication bays, and cargo loading yards. |
| 안전화 착용 | 安全靴 着用 | Compulsory wear of steel-toe boots | Heavy warehousing, scrap metal handling, and structural assembly facilities. |
| 안전장갑 착용 | 安全掌匣 着用 | Compulsory wear of protective gloves | Handling sharp metal stampings, sheet glass, or hot thermal parts. |
| 안전복 착용 | 安全服 着用 | Compulsory wear of protective coveralls | Foundry furnace tending, high-voltage maintenance, or cleanroom chemical lines. |
5. Information & Emergency Signs (안내표지): Green Rectangle
Information signs utilize a calming green background with white lettering and pictograms to indicate safety paths, emergency egress points, and medical relief stations during industrial crises:
| Korean Sign Caption | English Meaning | Graphic Pictogram | Emergency Function & Worker Response |
|---|---|---|---|
| 녹십자 표지 | Green Cross Safety Emblem | Green cross on a contrasting field | A general safety or first-aid emblem in some settings; use the accompanying label to identify the facility or instruction. |
| 비상구 | Emergency Exit / Egress Door | Green figure running through an open doorway | Directs workers to fire exits, smoke-proof stairs, and clear exterior evacuation assembly points. |
| 구급약품 | First Aid Kit / Medical Station | First aid case with small cross icon | Identifies wall-mounted cabinets containing bandages, antiseptic, burn gauze, and splints. |
| 비상용 기구 | Emergency Rescue Apparatus | Emergency breathing apparatus or blanket | Identifies specialized emergency respirators, fire blankets, and extrication tools. |
| 들것 | Medical Stretcher | Silhouette of an injured person on a stretcher | Indicates the storage cabinet for foldable medical stretchers to transport immobilized patients. |
| 세안장치 | Emergency Eye Wash / Shower | Faucet washing twin eye streams | High-pressure clean water fountain used to flush corrosive chemicals splashed in the eyes. |
6. Authentic Workplace Dialogue: Signage Review on the Shop Floor
Setting: A chemical compounding and solvent recycling facility in Gimpo. Safety Supervisor Park (박 반장) inspects a new solvent recovery bay with Hassan (하산), an E-9 worker from Bangladesh.
박 반장 (Supervisor Park): 하산 씨, 저기 벽에 붙은 빨간색 동그라미 표지 보여요? 가운데 담배 그림에 빗금이 그어져 있지요? (Hassan, do you see that red circular sign on the wall over there? There's a cigarette pictogram with a diagonal slash through the middle, right?)
하산 (Hassan): 네, 반장님. '금연' 표지입니다. 이곳에서는 담배를 절대 피우면 안 된다는 금지표지입니다. (Yes, Supervisor. It is a 'No Smoking' sign. It is a prohibition sign meaning one must never smoke here.)
박 반장 (Supervisor Park): 맞아요. 그리고 그 옆에 노란색 삼각형 표지에는 불꽃 모양이 그려져 있지요? 그건 무슨 뜻일까요? (Correct. And next to it, the yellow triangular sign has a flame symbol drawn on it, right? What does that mean?)
하산 (Hassan): 그건 '인화성 물질 경고' 표지입니다. 시너나 알코올 같은 물질이 있어서 불이 쉽게 붙을 수 있으니 화기에 주의하라는 경고입니다. (That is a 'Flammable Material Warning' sign. Because there are substances like thinner and alcohol that catch fire easily, it warns us to beware of heat sources.)
박 반장 (Supervisor Park): 아주 정확해요. 그럼 우리가 이 구역에 들어갈 때 문에 붙은 파란색 동그라미 표지는 어떻게 따라야 하죠? (Very accurate. Then how must we comply with the blue circular signs posted on the door when entering this zone?)
하산 (Hassan): 파란색은 지시표지니까, 보안경과 방독마스크를 반드시 착용하고 들어가야 합니다. 그리고 비상시에는 저기 초록색 '비상구'와 '세안장치' 위치를 확인해 두었습니다. (Since blue indicates mandatory action signs, we must wear safety goggles and a gas mask before entering. And in an emergency, I have already confirmed the locations of the green 'Emergency Exit' and 'Eye Wash Station' over there.)
박 반장 (Supervisor Park): 완벽하네요! 표지를 정확히 알고 있으니 안심입니다. (Flawless! Now that you know the signs accurately, I am reassured.)
7. EPS-TOPIK Signage Decoders & Exam Strategies
- Color-First Elimination Strategy: When facing a visual sign question, examine the color before reading the caption:
- Red circle with slash → Always a 금지 (Prohibition) sign.
- Yellow triangle / Red diamond → Always a 경고 (Warning) sign.
- Solid Blue circle → Always a 지시 / 착용 (Mandatory Action) sign.
- Green rectangle → Always an 안내 / 비상 (Information / Emergency) sign.
- Look-Alike Sign Traps:
- 출입 금지 (No Entry / person standing inside red circle) vs. 보행 금지 (No Walking / person walking inside red circle).
- 낙하물 경고 (Falling Objects / rocks falling from above) vs. 매달린 물체 경고 (Suspended Load / heavy weight hooked on crane cable).
A sign at a factory gate displays a white circular background bordered by a thick red ring with a diagonal slash passing through a silhouette of a person walking. What does this sign officially signify under Korean safety regulations?
An E-9 worker enters a solvent distillation facility and sees a yellow equilateral triangular sign containing a flame symbol inside a black border. Which Korean sign name and safety protocol corresponds to this marking?
Inside a chemical storage room, an employee splashes an acid cleaning agent near their face. Which official green information sign should coworkers look for immediately to locate equipment that rinses the eyes?