Video Summary - 2026 건설안전기사 실기 필답형 올인원 총정리⭐️이 영상 하나로 끝!

Main ideas & lessons conveyed

This video is a rapid-fire review course for the 2026 Construction Safety Engineer Practical Exam (필답형), organized as an “all-in-one” handwriting exam prep. The instructor repeatedly emphasizes memorizing key matching pairs, numerical standards, checklists, and required documents that commonly appear in fill-in-the-blank or matching questions.

Across the sessions, the core themes include:

Device/operator safety mechanisms and their correct “matched” terms/ratings
Stability and structural safety: cranes, scaffolds, formwork, tunnels, excavation slopes
Pre-work inspections and supervisor check points
Risk prediction & safety management systems (plan requirements, costs vs. progress)
Compliance documents and reporting obligations (accidents, serious incidents, MSDS, risk prevention plans)
Safety signs (prohibition/warning color & symbol rules) and hazard categories
Numerical standards (safety factors, angles, spacing, lighting lux, deadlines, insurance fee thresholds)
Demolition methods and preventive considerations
Safety education/training hours and criteria
Statistics formulas (frequency rate/intensity rate/FSI, mortality, safety score evaluation)

Methodologies / instruction-like content

1) Matching safety devices to machines/equipment (examples)

Acetylene welding device
- Requires a stabilizer
- Purpose concept: gas safety / protection mechanism
Boiler
- Protection device: pressure relief device
Powered manual planer
- Device to prevent blade contact: guard
AC arc welder
- Needs automatic protection to prevent electric shock accidents
- Answer mentions a rated protection device / rated breaker / breaker protection
Pile driver / pile extractor
- Hoisting wire rope stability (safety) factor: ≥ 5
- Must meet drum wrap/length requirements (noted below)

2) Hoisting wire rope / pile driver requirements (numerical rules)

Safety factor (stability factor) for hoisting wire rope
- Must be 5 or higher
Drum wrap / length requirement (key emphasis)
- Rope length must be enough to wrap at least twice and still have remaining rope
- Additional phrasing includes:
  - Drum shaft length must be L × 15 or more
  - Related “≥ 15×” drum-width spacing/wrap rule
Employer’s regulation (paraphrased)
- When using a hoist: drum shaft / axle distance / rope spacing must satisfy multiple-times-of-drum-width conditions
- Video phrasing includes “more than 15 times” / “≥15×.”

3) Aerial work platform (riding/operational checks)

Supervisor pre-operation / operational checks focus on verifying:

Emergency stop
- Confirm function; ensure proper stopping if platform rises unexpectedly
Emergency descent prevention device
- Check for abnormality during operation
Overload prevention device
- Check operation/presence for the wire rope or chain drive system
Outriggers
- Check presence/absence and work surface flatness
- Also check for uneven surfaces and abnormal conditions
Live-line work device
- Check for groove cracks / breakage / other damage

Format emphasized in exam notes: “Write down: presence/absence + abnormalities.”

4) Supervisor pre-start inspection items (by equipment/work type)

The video stresses memorizing pre-start inspection items by category, including examples such as:

Vehicles
Forklifts
Conveyors
Compressors
Robots
Cranes (including mobile cranes)
Aerial work platforms

It also groups fire-risk work (welding/cutting) as a memorization list commonly found in textbooks.

5) Industrial safety & health management costs vs. progress rate (thresholds)

Usage standards for the completion/progress rate are presented as thresholds:

≥ 50% and < 70%
≥ 70% and < 90%
≥ 90%

Main exam lesson: Safety management fees must be used in proportion to construction progress. Using too little relative to progress can be a violation.

6) Risk prediction training stages (4-step flow)

“Risk prediction training” is taught as an exam-friendly 4-step sequence:

Stage 1: Precognition (phenomenon recognition)
- Identify potential risk factors on site
Stage 2: Root-cause identification
- Analyze “why” and the cause chain
Stage 3: Countermeasure establishment
- Implement practical measures to prevent accidents
Stage 4: Goal setting / implementation
- Set safe behavioral goals and apply them

7) Reporting construction accidents / serious incidents

Construction accident notification (3 required content elements)

The video lists three mandatory elements:

When, where, what
Circumstances (what happened/how, past sequence)
Measures taken and future actions outlook

Serious incidents (major incident triggers; examples)

Examples include conditions such as:

1 or more deaths
2 or more persons injured requiring medical care for 3+ months simultaneously
10+ occupational disease cases simultaneously, etc. (as specified in the video)

8) Record preservation for industrial accidents (3 categories)

Workplace overview + worker personal details
Occurrence date/time & place (chapter 1)
Causes/process + recurrence prevention plan

9) Fall prevention & edge protection standards (numeric emphasis)

Common repeated types:

Fall protection nets (horizontal/tilted installation)
Safety railings at roof edges / passageways
Toeboards / handrail components

Key numeric examples emphasized:

Net installation height relationship
- Vertical distance from work surface to net installation point: ≤ 10 m
Net sag ratio
- Install horizontally
- Sag on the short side: ≥ 12% of the short-side length
- Example: 3 m → 36 cm
External installation protrusion
- Protruding length from wall surface: ≥ 3 m
- The rule set appears together with ≤ 10 m vertical distance
Roof with weak materials
- Footrest width and step width: ≥ 30 cm

10) Excavation slope stability (slope ratio standards)

Slope ratios depend on soil condition. The video presents combinations such as:

1 : 1.8 (sand/weak combinations)
1 : 1.0 for certain conditions
1 : 0.5 for harder soil
1 : 1.2 under other specified categories

11) NATM tunnel method core exam points

Main method: NATM (New Austrian Tunneling Method)
Stage investigation check items (3 named):
- Geology/strata investigation results
- Groundwater level
- Soil distribution status
Also mentioned: confirmations including support/boring locations

12) Safety sign identification standards (colors/symbol layout)

Exam rule taught through repeated examples:

Prohibition signs
- White background
- Red basic model
- Black symbol
- Diagonal slash on the red circle
Warning signs
- Yellow triangle / danger symbols / exclamation mark style
Instruction/info signs
- Blue background with white symbols
- Green information/relief signage, etc.

(Examples such as “no entry,” “no walking,” “no vehicles,” “no smoking,” “danger” are shown.)

13) Cement formwork removal by temperature & type (memorization table)

Rule: dismantle timing depends on cement type and ambient temperature.

Examples stated include:

Portland cement
- Fastest at ≥ 20°C
- If lower, timing extends (e.g., 10–20°C longer)
High early strength / blast furnace slag cement types
- Type 1/Type 2 have different minimum days
- Differences depend on 20°C vs. 10–20°C cases

Main lesson: memorize the mapping (cement type + temperature) → days.

14) Safety education/training hours (construction safety & health)

Three worker categories and standard hours:

Supervisors
- Regular training: ≥ 16 hrs/year
- Initial on hiring: 8 hrs
- When duties change: ≥ 2 hrs
Safety/health management officer
- Initial/new: ≥ 6 hrs
Specialized agency personnel
- Initial/new: ≥ 34 hrs
- Refresh/regular schedule mentioned as > 24 hrs

Special training content emphasized for explosive blasting, including:

Explosives handling procedures and evacuation
Protective structures and standards
Protective equipment and signaling methods (3–4 content blocks are named.)

15) Risk prevention plan submission conditions (construction projects)

Major categories requiring submission (memorize as exam rules):

Height above ground ≥ 31 m
Cold storage facilities with side area ≥ 5,000 m²
Bridges with span length ≥ 50 m
Tunnels (context tied to NATM discussion earlier)
Dams, including dedicated categories:
- multipurpose / power generation / water supply dedicated dams
- reservoir threshold mentioned: e.g., ≥ 20 million tons (for water supply dedicated)
Excavation depth ≥ 10 m

Exam lesson: these are treated as unconditional risk prevention plan requirements.

16) Safety manager / safety officer appointment counts (cost-based)

A cost-to-headcount “table concept” is taught:

Construction cost bands (e.g., 80b, 150b, 220b, etc.)
- Map to number of safety managers
Additional condition:
- Equivalent staffing across the full period
- Mentions a 15/100 time rule

17) Fatalities, injury stats & formulas (industrial accident statistics)

Core formulas taught:

Frequency rate
Intensity rate
Uses concepts like suspension rate, business suspension, and “lost days” conversions
Includes a conversion table:
- Severity/grade (death vs. occupational disease grade)
- → “lost days” equivalents
FSI (comprehensive safety index)
- Based on frequency/intensity
- Video structure described like:
  - FSI = (frequency factor) × sqrt(intensity rate)

18) Safety score evaluation (workplace risk severity index)

Judgment logic described:

Compute a safety score difference using past vs. current accident frequency/intensity indices
Decision thresholds:
- ≤ -2: safer than the past
- Between -2 and +2: no significant difference
- ≥ +2: significantly worse

Speakers / sources featured

Fighting Honggong TTV (channel/instructor/voice throughout)

2026 건설안전기사 실기 필답형 올인원 총정리⭐️이 영상 하나로 끝!

Key takeaways