2026 3회차 산업안전 산업기사 필답형 올인원 총정리⭐️1회2회차 신출포함 연속재생

Main ideas / lessons

This long video is a rapid “memorization + past-exam style” guide for the Korea Industrial Safety (Industrial Safety Technician/Engineer) practical/written exam (필답형) and related topics.

It repeatedly emphasizes:

• Memorize exact numeric thresholds and formulas (often presented in “fill-in-the-blank” exam form).
• Identify which protective device/standard applies to a specific hazard, such as:
  • fall hazards
  • electrical shock
  • falling objects
  • overheating
  • press safety
  • cranes
  • scaffolding

• Use a structured approach: recognize hazard → apply the correct standard/device → apply required conditions (time, distance, hours, safety factor, training hours, etc.).

• Many sections are delivered as “rule snippets”—i.e., what to write directly in the exam answer.

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Methodology / instruction lists included

1) Forklift head guard requirements (driver head protection)

Condition 1: Strength

• The head guard must withstand 2 × maximum forklift load.
• If the maximum load exceeds 4 tons, use an upper limit:
  • withstand evenly distributed load up to 4 tons
  • (i.e., don’t exceed that in the calculation limit)
• Includes the concept of a uniformly distributed static load across the roof.

Condition 2: Opening size (upper frame)

• For the grid “upper frame,” each opening width/length must be < 16 cm.
• Purpose: prevent falling objects from passing through openings.

Condition 3: Height

• The head guard height must meet the Korean Industrial Standards height requirement (above the specified standard).

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2) Safety manager appointment: number of managers by industry/workplace scale

• Determine the number by industry category and workplace scale.
• Example mentioned:
  • Automobile/trailer manufacturing
    • for 580 workers, it uses the table category shown as “500 or more” → 2 safety managers
• Construction industry:
  • uses construction cost thresholds
  • presented as a tiered scheme (the video stresses memorizing the exact breakpoints)

Exam habit: memorize the specific figures by industry and whether thresholds are based on employees or construction cost.

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3) Safety manager qualification (who can be appointed)

Qualification pathways listed:

• By national technical qualification law
  • Industrial Safety Technician / Industrial Safety Engineer or higher (including education pathways).
• By education (university/college)
  • industrial safety-related major/semester completion criteria.
• By work experience
  • For non-construction industries: safety-related roles over 10 years
  • For construction industry: safety/health roles over 10 years
    • the video explicitly corrects “7 years” → “10 years”

Exam instruction: treat these as must-check items when a question asks whether a person can be appointed.

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4) Safety education/training for special type workers (KEPCO-style scheduling)

Core rules presented:

• General labor provision training
  • typically ≥ 2 hours for initial labor provision
  • for short-term/intermittent work: may be > 1 hour if special training already occurred
• If special training already occurred
  • initial safety education/training can be exempted
• Special form employment practician (special type workers)
  • first-time protection: training rules depend on whether a “special training day” already exists
• Special education (when required)
  • baseline: ≥ 16 hours total
  • among them: ≥ 4 hours must be completed before starting work
  • remaining hours can be split over up to 3 months

Exam memo: the “2 hours principle” applies as a default, but 16-hour special education applies in certain cases.

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5) Force calculation example (lifting device / wire rope load)

Given:

• Cargo mass: 3500 kg
• Acceleration: 20 m/s²
• Gravity: 9.8 m/s²

Steps (as described):

• Use: F = m(a + g)
• Convert between N and kgf using: 1 kgf = 9.8 N
• Compute the required value and express the result in kgf

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6) Photoelectric protection device safety distance (press hazard)

Formula-style method:

• Define times:
  • TM = TL + TS
  • TL: emergency stop mechanism operating time (30 ms in example)
  • TS: stop time after protective device activation until complete stop (120 ms in example)
• Safety distance:
  • d = 1.6 × TM
• Example:
  • d = 1.6 × (30 + 120) ms
  • converted to mm (example computed as 240 mm)

Exam instruction: memorize the 1.6 constant and the time-addition structure.

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7) Training time schedules (supervisors/managers/workers)

The subtitles include structured time rules such as:

• Supervisor training (electrical)
  • ≥ 16 hours/year when applicable
• Changes in work content/work role
  • require additional training time (rules depend on contract type/length)
• For workers/special workers
  • additional rules for new hire, contract ≤ 1 week, and other tiers

Exam instruction: always match:

• training type (new hire vs refresher vs change vs special) with

• worker type (employee vs contract, duration)

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8) Safety helmet components (naming parts)

Parts listed (for fill-in-the-blank style memorization):

• outer/structure shell (matrix)
• head interior
• support strap, retention straps/hooks/buckles
• impact absorber / shock absorber layer
• chin strap / jaw muscle area
• ring / retention loop

Memorization method: “numbers 1–7” style naming.

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9) “Harmful objects + unsafe acts” (불완전행동) framework

• Objects (hazardous physical items)
  • machine parts/tools that directly contact and cause injury
  • examples: lathe gear, shelf cover
• Unsafe behavior
  • not following supervisor instructions
  • doing actions like operating at low speed
  • lubricating without stopping

Exam instruction: write objects + unsafe behavior as distinct items.

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10) Major incident reporting (employer duties)

When a major industrial accident occurs:

• Employer must report without delay to the local Employment & Labor Office head (by fax or appropriate method).
• Include:
  1. occurrence details
  2. damage/situation overview
  3. measures taken and outlook (future plans)
  4. “other important matters” if applicable (separated in the answer)

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Other key concepts covered (high-level)

• Forklift left-right stability calculation
  • stability ratio + speed-angle relationship; exam-like computation
• 5-step instruction method in training
  • prepared → taught → practiced/“united” → oversaw (and related step phrasing)
• Safety manager refresher timing cycle
  • new training within 3 months
  • refresher around 6 months before/after certain yearly/2-year milestones
• Role distinction
  • person in charge vs supervisor vs safety manager (A–E matching style)
• Crane/hoist/lifting equipment device identification
  • hoist types, safety rail components
• Scaffolding and passageway installation
  • angles, widths, required railings, step landings every N meters
• Wire rope / chain rejection criteria
  • wire rope: diameter reduction thresholds (e.g., 10%, 7%), broken strands, corrosion/deformation/heat/electric shock damage
  • chain: length increase > 5%, link ring diameter decrease > 10%, cracked/deformed links
• Acetylene welding / gas safety constraints
  • distance from fire sources (e.g., gas equipment > 5 m)
  • copper alloy % restriction (≥ 70% copper restriction to avoid acetylides)
  • fire extinguisher, smoking/open flame prohibitions within set distances
• MSDS training contents
  • chemical identification, physical hazards, handling precautions, PPE, first aid, accident response, warning label interpretation
• Protective equipment marking (safety-certified products)
  • safety certification number, model/spec info, manufacturing date, manufacturer name
• Safety certification / autonomy verification
  • review periods, required markings, what’s checked
• Press protection devices
  • types and selection rules (guard-type, two-hand, interlock, photoelectric, hand recognition)
• Non-destructive testing (NDT) types
  • visual, PT, MT, UT, etc., with brief definitions
• Electric shock protection standards
  • leakage protective device thresholds (rated sensitivity current/time rules)
  • grounding voltage exception (≤ 30 V)
• Fire extinguishers
  • map fire classes to suitable extinguishing agents (A/B/C/D/E-type concepts referenced)

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Speakers / sources featured

• Fighting Honggong TTV (hosted multiple exam-note sessions)
• Gonggong Kim (mentioned as “this is Gonggong Kim” in one session)
• Choi Yong-si (appears once in subtitles; context unclear but included as a named source/speaker)
• (Choi Yong-si) is the only clearly named individual besides the channels/host brand.

(No other external sources/citations are clearly identifiable from the subtitles.)