Transmission Line Construction Planning in Korea: A Field Guide

Transmission line construction planning in Korea covers site survey, commencement documents, permits, budgeting and scheduling before transmission work begins. The tasks mirror distribution planning, but transmission towers stand in mountains and farmland and 154 kV and 345 kV underground cables run beneath city roads, so community issues, transport and permits weigh far more heavily. This guide frames the five stages around transmission sites.

Contents

• Common Pre-Work Review
• 1. Transmission Site Survey
• 2. Commencement Documents
• 3. Permits and Authority Filings
• Distribution vs Transmission Planning
• 4. Construction Budget
• 5. Schedule Planning
• FAQ
• Reference Standards
• Summary

Common Pre-Work Review

Planning starts by reading the design documents, tower fabrication drawings and KEPCO standards together, and by understanding the temporary access to each tower site and the road conditions on underground sections. For the site survey, prepare tape measures, telescopes, stakes, total stations, staffs and levels, plus an engineering calculator, camera, radios and a voltage detector; workers wear hard hats, safety vests, safety shoes, insulating gloves and harnesses and carry lanterns. Budgeting needs the standard productivity tables, market prices and the client’s estimating software.

1. Transmission Site Survey

1. Review the design documents to identify problems in advance.
2. Survey residents’ views and plan responses to complaints.
3. Investigate in advance how to prevent noise and dust from the work.
4. Survey obstructions such as water and sewer lines, gas pipes and telecom lines.
5. Select a site office location with good access for plant, materials and labor.

On transmission projects, survey access roads, landowner consent and possible crop damage for every tower site, and decide at this stage whether mountain sites will need a cableway or helicopter. Transport planning in detail is covered in Transmission Tower Foundation Construction.

2. Commencement Documents

1. Prepare the safety management plan under the Occupational Safety and Health Act, based on the safety organization, safety cost plan and implementation plan.
2. Appoint the site construction manager (시공관리책임자) under the Electrical Construction Business Act, considering project scale.
3. Prepare the method statement considering labor, materials and plant for each key activity.
4. Prepare the quality test plan for tests and materials.
5. Prepare the environmental management plan covering organization, daily inspections, training and the environmental budget.
6. Survey and photograph the site before work starts.
7. Appoint an electrical safety manager based on installed capacity (now under the Electrical Safety Management Act).

For transmission work, the safety implementation plan must explicitly cover high-risk tasks — working at height during tower erection and stringing, heavy lifts and helicopter transport — in its activity-based inspections and emergency response.

3. Permits and Authority Filings

1. File the construction plan report.
2. Apply for temporary construction power.
3. Under aviation-related law, file notice of aviation obstruction lights and markers on towers and lines.
4. Apply for road excavation and occupancy permits.

The Aviation Act cited when this unit was written has since been split into several laws, so confirm obstruction-marking requirements for tower heights against current law and the competent authority.

Distribution vs Transmission Planning

	Distribution	Transmission
Typical site	Roads and residential areas	Mountains and farmland (towers); under city roads (underground)
Transport	Mainly vehicles	Access roads, cableways or helicopters
Permit emphasis	Road occupancy, temporary power	Road occupancy plus landowner consent and aviation marking
High-risk work	Work near live lines, traffic	Erection and stringing at height, heavy lifts, helicopter transport
Budget/schedule drivers	Complaints, road schedules	Lead times for tower steel and cable, price movements, weather

The performance criteria are the same as for distribution, so compare with Distribution Line Construction Planning.

4. Construction Budget

1. Apply the award ratio to prepare the contract bill of quantities.
2. Adjust unit cost build-ups when the contract bill changes.
3. Review material and labor costs to prepare the execution budget.
4. Review the calculation basis behind the contract bill.
5. Review price escalation under the item or index method.
6. Identify design change candidates considering schedule, quantities and cost savings.
7. Identify client-furnished materials and reflect them in the budget.

Transmission projects involve many high-value, long-lead materials — tower steel, conductors and cables — so escalation and client-furnished delivery dates affect both budget and schedule.

5. Schedule Planning

1. Plan labor and plant deployment from the method statement.
2. Prepare the schedule to track progress against plan.
3. Coordinate with related contractors and other trades.
4. Plan material supply so materials arrive on time.
5. Prepare a recovery plan if the work falls behind, considering contract conditions.
6. Confirm client-furnished materials, request delivery dates and manage them.

FAQ

Reference Standards

• Electricity Business Act (전기사업법) — law.go.kr
• Electrical Safety Management Act (전기안전관리법) — law.go.kr
• Electric Technology Management Act (전력기술관리법) — law.go.kr
• Electrical Construction Business Act (전기공사업법) — law.go.kr
• Occupational Safety and Health Act (산업안전보건법) — law.go.kr
• Korea Electro-technical Code (KEC, 한국전기설비규정) — law.go.kr
• KEPCO design standards; field practice manuals for transmission and distribution work; Korean Industrial Standards (KS)
• NCS competency unit Transmission Line Construction Planning (송전공사계획 수립, 1901070228_22v2; NCS is Korea’s National Competency Standards) — ncs.go.kr

Summary

The most common mistake in transmission planning is treating it like distribution work — thinking only of vehicle transport and road permits — and deciding tower access and transport too late. Fix transport methods during the site survey, aviation marking and landowner consent during permitting, and long-lead materials during budgeting and scheduling. A Korean version of this guide is available here.

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This article restructures the Korean NCS competency unit ‘Transmission Line Construction Planning’ (송전공사계획 수립, code 1901070228_22v2) as a practical reference. Actual work must follow applicable standards and the judgment of qualified professionals; always confirm specific values, deadlines and criteria against the latest regulations and client standards.

Written/reviewed by VOLT · Last updated 2026-10-25