Distribution line construction planning in Korea is the work done before a power distribution project starts: site survey, preparation of commencement documents, review of permits and dealings with authorities, construction budgeting and schedule planning. Distribution work usually takes place on public roads and in residential areas, so off-site factors such as complaints, buried utilities and road occupancy permits drive the schedule. This guide sets out, in five stages, what to survey and which documents and permits to prepare before work begins.
Contents
- Common Pre-Planning Review
- 1. Distribution Site Survey
- 2. Commencement Documents
- 3. Permits and Authority Filings
- Key Permits at a Glance
- 4. Construction Budget
- 5. Schedule Planning
- FAQ
- Reference Standards
- Summary
Common Pre-Planning Review
Planning starts by reading the design documents alongside construction guidelines such as KEPCO (한전) design standards and field practice manuals for transmission and distribution work. For the site survey, prepare surveying equipment — tape measures, telescopes, stakes, total stations, staffs and levels — plus a utility locator and an earth resistivity tester, as well as an engineering calculator, camera, radios and a voltage detector. Everyone on site wears a hard hat, safety vest, safety shoes, insulating gloves and a safety harness, and carries a lantern. Budgeting requires the standard productivity tables (표준품셈), market unit prices, price data and the estimating software used by the client.
1. Distribution Site Survey
- Review the design documents to identify potential problems with the distribution work in advance.
- Survey local residents to hear their concerns and plan responses to complaints.
- Investigate in advance how to prevent noise, dust and similar nuisances caused by the work.
- Survey obstructions such as water and sewer lines, gas pipes and telecom lines to identify obstacles to the work.
- Select a location for the site office that gives good access for equipment, materials and labor.
Do not rely on locator readings alone; cross-check buried utilities against the drawings held by each utility owner. Measuring earth resistivity at this stage (for example with the Wenner four-electrode method) supports the earthing design and reduces later design changes.
2. Commencement Documents
- Under the Occupational Safety and Health Act, prepare a safety management plan based on the safety organization, the safety cost plan and the safety implementation plan.
- Under the Electrical Construction Business Act, appoint the site construction manager (시공관리책임자) taking the scale of the work into account.
- Prepare the method statement, taking into account labor, materials and equipment for each key activity.
- Prepare a quality test plan to secure the quality of tests and materials.
- In line with the relevant laws, prepare an environmental management plan covering the environmental organization, daily inspections, environmental training and the environmental protection budget.
- Survey site conditions before construction and submit pre-construction photos.
- Appoint an electrical safety manager based on the capacity of the electrical installation (now governed by the Electrical Safety Management Act).
The safety implementation plan covers safety training, the safety cost plan, supply of protective equipment, the safety organization, emergency contacts, safety inspections by activity, safety around the site perimeter, emergency response, traffic management, pedestrian safety facilities and accident response. For the wider start-up paperwork see Electrical Construction Management in Korea, and for the environmental plan see Electrical Construction Environmental Management.
3. Permits and Authority Filings
- File the construction plan report required to start work.
- Apply for an electricity supply connection to use temporary construction power.
- Under aviation-related law, file a notice for installing aviation obstruction lights and markers on towers and lines.
- Apply to the competent road authority and police for road excavation and road occupancy permits before starting work.
Key Permits at a Glance
| Item | Authority / basis | Prepare in advance |
|---|---|---|
| Construction plan report | Filed under the Electrical Safety Management Act and related laws | Construction plan report, installation overview |
| Temporary power | KEPCO terms and conditions of electricity supply | Temporary load calculation, supply application |
| Aviation obstruction lights and markers | Aviation-related law (formerly the Aviation Act) | Tower and line locations and heights, notice form |
| Road excavation and occupancy | Road authority; police for traffic matters | Road occupancy application, traffic management plan |
Permits take time to process and sit at the very front of the schedule, so fix the filing dates before drawing up the programme. The Aviation Act cited when this competency unit was written has since been split into several laws, so confirm aviation obstruction marking requirements against current law and the competent authority.
4. Construction Budget
- Apply the award ratio from the bid to prepare the contract bill of quantities.
- When the contract bill changes, adjust and re-prepare the unit cost build-ups (일위대가).
- Review material and labor costs to prepare the execution budget for actually carrying out the work.
- Review the detailed calculation basis behind the contract bill.
- Review price escalation under the item adjustment or index adjustment method.
- Identify candidates for design change, considering schedule reduction, quantity changes and cost savings.
- Identify which materials the client will furnish and reflect this in the budget.
A unit cost build-up combines the material (direct and indirect), labor and expense (plant and other) costs for one unit of work; the budget calculation basis is the quantity basis for direct labor and direct materials. Escalation and design change decisions are covered in more depth in Electrical Construction Design Change Management.
5. Schedule Planning
- Plan labor and equipment deployment according to the method statement.
- Prepare a schedule to track progress against the plan.
- Coordinate with related contractors and other trades so the work proceeds as planned.
- Prepare a material supply plan so materials arrive in time for the scheduled work.
- If the work falls behind, prepare a recovery plan taking the contract conditions into account.
- Confirm which materials the client will furnish, request delivery dates and manage those materials.
For schedule types and recovery planning, see Electrical Construction Scheduling.
FAQ
Which permits are required before starting distribution line work?
At minimum, a construction plan report, a temporary power application and road excavation and occupancy permits. If towers or lines require aviation obstruction marking, a notice for obstruction lights and markers is also needed. Processing takes time, so fix these dates before the schedule.
How are buried utilities surveyed?
Locate water, sewer, gas and telecom lines with a detector, then confirm positions against each owner’s drawings. Where positions remain uncertain, confirm safely — for example with trial holes — before excavating.
What is a unit cost build-up?
The combined material, labor and expense cost for one unit of work. When the contract bill changes, the unit cost build-ups must be adjusted so they stay consistent with the execution budget.
How are client-furnished materials handled in the budget?
Materials supplied by the client are removed from the contractor’s material cost, and the delivery request, receipt and storage plan are added to the schedule instead.
Reference Standards
- Electrical Construction Business Act (전기공사업법) — law.go.kr
- Electrical Safety Management Act (전기안전관리법) — law.go.kr
- Electricity Business Act (전기사업법) — law.go.kr
- Electric Technology Management Act (전력기술관리법) — law.go.kr
- Occupational Safety and Health Act (산업안전보건법) — law.go.kr
- Road Act (도로법, road occupancy permits) — law.go.kr
- Noise and Vibration Control Act; Wastes Control Act — law.go.kr
- Act on Contracts to Which the State is a Party (국가를 당사자로 하는 계약에 관한 법률) — law.go.kr
- Korea Electro-technical Code (KEC, 한국전기설비규정) — law.go.kr
- KEPCO terms and conditions of electricity supply; KEPCO design standards; standard productivity tables
- NCS competency unit Distribution Line Construction Planning (배전공사계획 수립, 1901070229_22v2; NCS is Korea’s National Competency Standards) — ncs.go.kr
Summary
The most common mistake in distribution line construction planning is drawing the schedule first and fitting permits and utility surveys in later. Because external dates — road occupancy, temporary power, community complaints — set the pace of distribution work, following the order of site survey, commencement documents, permits, budget and schedule is what keeps the job from stalling after it starts. A Korean version of this guide is available here.
This article restructures the Korean NCS competency unit ‘Distribution Line Construction Planning’ (배전공사계획 수립, code 1901070229_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.
Written/reviewed by VOLT · Last updated 2026-10-25