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newSchoolWorks.com › VoTechWorks › Building & Construction › Electrical Lineworker › Aerial Lift / Bucket Truck Operations › Lesson 5
BLD-LINE69-03 · Lesson 5 · 4 clock hours · field

Integrated Aerial Work Scenario and Operator Documentation

Objective. Students plan, document, set up, and execute a complete simulated distribution-line aerial task from truck arrival through departure, producing all required operator records and passing a final instructor safety check.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed professional engineer or master tradesperson or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

What This Lesson Is About

This field lesson brings together every skill you have practiced individually—inspection, load charting, hazard assessment, outrigger deployment, aerial positioning, and paperwork—into one continuous, evaluated scenario. You will perform the task as a professional operator would on an actual job site: from the moment the truck arrives through the moment you pull back onto the road. Nothing is skipped and nothing is assumed to be "good enough." Every item must be completed correctly or the scenario is repeated.

The Job Order

Before you touch the truck, read the written job order completely. A job order tells you the task (in this lesson, attaching tie-in wire to a crossarm), the location, any specific hazards the dispatcher has already identified, and the equipment assigned. If anything in the job order is unclear, ask before you start—not after you are elevated 30 feet in the air. Mark any pre-identified hazards on your hazard assessment form before you begin the inspection.

Pre-Operation Inspection

Walk completely around the unit before starting the engine. Check tires, lights, fluid levels, boom and bucket condition, control decals, safety devices, and the manufacturer's data plate. Controls must be tested at ground level—both the lower (base) controls and the upper (bucket) controls—before any person enters the bucket. Confirm that the emergency lowering system is accessible and functional. Sign and date the pre-operation checklist. An unsigned checklist is an incomplete document; incomplete documents are a documentation failure on the evaluation.

Load-Chart Calculation

Every aerial lift has a rated load capacity that changes depending on boom angle and extension. The manufacturer's load chart is posted inside the unit and must never be removed. Before you elevate, add up every pound that will be in the bucket: your body weight, your PPE and tools, and any materials you will carry. That total must fall within the rated capacity for the boom position you plan to use. If it does not, you must reduce the load or change your boom position—never exceed the chart. Write the calculation on the load-chart data sheet and carry it with your documentation packet.

Hazard Assessment

A hazard assessment is not a formality—it is a legal requirement under OSHA's general industry and construction standards. Walk the work zone and look for overhead electrical lines beyond the one you are working on, underground utility markings, traffic patterns, ground slope, and bystanders. Identify the minimum safe approach distance for any energized conductors near your work zone. Record every hazard found and the control measure you will apply. Brief your crew (in this lesson, your classmates) on each hazard and each control before anyone enters the work zone.

Work Zone Setup

Set cones and signs according to the traffic-control plan for the job order. The work zone must warn drivers in both directions with adequate sight distance. Once the work zone is established, position the truck so the boom can reach the work point without over-extension and so outriggers can be fully deployed on firm, level ground. Place outrigger pads under each outrigger foot. Extend all outriggers fully before elevating the boom—partial outrigger deployment is a critical safety violation and will end your evaluation immediately.

Personal Fall Protection

Before you step into the bucket, attach your lanyard to the manufacturer-designated anchor point inside the bucket. Keep it attached for the entire time you are elevated. Removing or failing to attach your lanyard while elevated is a critical safety violation. Wear your hard hat, safety glasses, and all other required PPE throughout the scenario. Depending on the simulated task, rubber insulating gloves and sleeves appropriate to the voltage class may also be required—verify this with your instructor before the scenario begins.

Elevating, Working, and Descending

Rise smoothly to the assigned work position. Do not travel with the boom elevated. At the work position, perform the simulated two-minute tie-in wire attachment task deliberately and without rushing. Keep tools and materials inside the bucket; never throw anything down. When the task is complete, lower the boom fully and secure it in the travel cradle before moving the truck. Confirm all outriggers are fully retracted before the truck moves. These steps are in a specific order for a reason: a boom that is not fully cradled or outriggers that are not retracted can make the truck tip or strike an overhead obstacle during travel.

Post-Operation Inspection and Documentation

After the truck is back in travel position, perform a post-operation inspection using the same systematic walk-around as the pre-operation check. Note any new deficiencies—fluid leaks, damaged controls, dents in the bucket—on the checklist. Even if you believe the equipment is fine, every line of the checklist must be filled in. Submit your complete documentation packet to the instructor: pre-operation checklist, load-chart calculation sheet, hazard assessment form, and post-operation checklist. All four documents must be legible, complete, and signed. The instructor will sign each form upon approval.

The Go/No-Go Evaluation

The instructor observes every phase of the scenario with a go/no-go checklist. Three items result in an automatic stop and required repeat: an unattached lanyard while elevated, an outrigger not fully deployed before elevation, and any load that exceeds the rated chart value for the boom position used. A documentation packet that is missing, illegible, or unsigned also requires a repeat. There is no partial credit for critical safety items—this mirrors what happens on a real job site, where a safety violation can remove you from the work site entirely.

Key terms10

Job orderA written directive from a dispatcher or supervisor that identifies the task, location, assigned equipment, and any pre-identified hazards before work begins.
Load chartThe manufacturer's table, posted inside the aerial lift, that specifies the maximum rated load the unit can safely carry at each combination of boom angle and extension.
Hazard assessmentA documented, site-specific evaluation identifying all hazards present in the work zone and the control measures that will be used to eliminate or reduce each one before work begins.
OutriggerA stabilizing leg that extends from the chassis of a bucket truck to the ground, widening the vehicle's base to prevent tipping during boom operations; must be fully deployed before the boom is elevated.
Outrigger padA firm, load-distributing plate placed under each outrigger foot to spread the load and prevent sinking into soft or uneven ground.
Lower (base) controlsThe set of boom and bucket controls located at the base of the unit, used by a ground operator and also used to test all functions before anyone enters the bucket.
Emergency lowering systemA backup mechanism that allows the boom and bucket to be lowered to ground level by a ground operator if the upper controls become inoperable.
Go/no-go checklistAn instructor evaluation form on which each item has only two possible outcomes—acceptable or not acceptable—with defined critical violations that immediately stop the evaluation.
Travel positionThe configuration in which the boom is fully lowered and secured in the travel cradle and all outriggers are fully retracted, making the truck safe to drive on a road.
Documentation packetThe complete set of required written records for an aerial lift operation, including the pre-operation checklist, load-chart calculation sheet, hazard assessment form, and post-operation checklist.

Worked examples4

1. You weigh 195 lb. Your PPE and tools weigh 28 lb. You are carrying a 12 lb coil of tie-in wire into the bucket. The manufacturer's load chart for your boom angle and extension shows a rated capacity of 250 lb. Does your planned load comply with the chart?
  1. List every item that will be in the bucket: operator body weight = 195 lb, PPE and tools = 28 lb, tie-in wire = 12 lb.
  2. Add all items together: 195 + 28 + 12 = 235 lb.
  3. Compare the total to the rated capacity on the chart: 235 lb vs. 250 lb rated.
  4. Determine compliance: 235 lb is less than 250 lb, so the load is within the rated limit.
Answer: Yes. The total load of 235 lb is within the 250 lb rated capacity. The load chart calculation is acceptable; record 235 lb on the data sheet.
2. Same operator and PPE as above (195 lb body weight, 28 lb PPE and tools). You extend the boom further to reach the work point, and the load chart shows the rated capacity drops to 220 lb at the new boom position. You still plan to carry the 12 lb coil of wire. Does the load comply at the new position?
  1. Total load remains: 195 + 28 + 12 = 235 lb.
  2. Rated capacity at the new boom position = 220 lb.
  3. Compare: 235 lb exceeds 220 lb by 15 lb.
  4. The load does NOT comply at this boom position.
Answer: No. At the extended boom position the total load of 235 lb exceeds the 220 lb rated capacity. You must either leave the wire coil on the truck and make a second elevation, or reposition the truck to use a shorter boom extension with a higher rated capacity before elevating.
3. After resolving the overload by leaving the wire coil on the truck, your load is now 195 + 28 = 223 lb at the extended position rated 220 lb. Is this compliant?
  1. Recalculate load without the wire coil: 195 + 28 = 223 lb.
  2. Rated capacity at this boom position = 220 lb.
  3. Compare: 223 lb still exceeds 220 lb by 3 lb.
  4. The load still does NOT comply, even by a small margin.
Answer: No. Exceeding the chart by any amount—even 3 lb—is a critical violation. The correct action is to reposition the truck to achieve a boom angle or extension with a rated capacity of at least 223 lb, or to reduce the load further (for example, leaving a heavy tool on the truck).
4. You reposition the truck so the boom angle gives a rated capacity of 230 lb. Your load is 223 lb (195 lb operator + 28 lb PPE and tools, no wire coil). Complete the load-chart data sheet entry and confirm compliance.
  1. Record operator weight: 195 lb.
  2. Record PPE and tool weight: 28 lb.
  3. Record materials in bucket: 0 lb (wire coil left on truck).
  4. Total load: 195 + 28 + 0 = 223 lb.
  5. Rated capacity at this boom position: 230 lb.
  6. 223 lb ≤ 230 lb — compliant.
  7. Write 223 lb total load and 230 lb rated capacity on the data sheet; sign and date it.
Answer: The total load of 223 lb is within the 230 lb rated capacity at the repositioned boom angle. The data sheet entry is complete and the scenario may proceed.
In class: Pre-task briefing: student operator receives a written job order, performs the full pre-operation inspection independently, completes the load-chart calculation for the assigned task, fills in the daily hazard assessment form, and briefs the class as if they were a crew. · Full scenario execution: student sets up the work zone, deploys outriggers, rises to the assigned work position, completes a two-minute simulated task (tie-in wire attachment to crossarm), and returns the unit to travel position—evaluated live by instructor on a go/no-go checklist. · Post-task documentation: student completes the post-operation inspection checklist, notes any deficiencies found, and submits the full documentation packet (pre-trip, load chart, hazard assessment, post-trip) for instructor review and signature.
Materials: Aerial lift unit, full PPE set, traffic cones and signs, pre-operation and post-operation checklists, load-chart data sheet, hazard assessment form, sample job-order card, tie-in wire and crossarm mock-up, instructor go/no-go evaluation form
Check: Instructor go/no-go checklist: zero critical safety violations (unattached lanyard, undeployed outrigger, exceeded load limit) permitted; all documentation must be complete and legible; any critical violation requires full scenario repeat before passing.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

NCCER Power Line Worker — Equipment Operation and Inspection
1. During the pre-operation inspection you discover that one outrigger warning decal is faded and unreadable. What is the correct action before continuing the scenario?
OSHA 10 — Fall Protection
2. You are elevated in the bucket and need to reposition your grip on the tie-in wire. Which action is correct?
NCCER Power Line Worker — Load Chart and Equipment Limits
3. Your load-chart calculation shows a total load of 241 lb. The chart for your current boom position shows a rated capacity of 240 lb. What should you do?
NCCER Power Line Worker — Equipment Operation and Inspection
4. After completing the simulated task and lowering the boom, what must happen before the truck is moved?
NCCER Power Line Worker — Operator Documentation
5. Which of the following items does NOT belong in the documentation packet you submit at the end of the scenario?
OSHA 10 — Hazard Identification and Control
6. During the crew briefing portion of the scenario, a student skips the section about a nearby energized distribution line because it is outside the immediate work area. The instructor stops the briefing. Why?
NCCER Power Line Worker — Operator Documentation
7. You complete the scenario with no critical violations but submit a documentation packet in which the post-operation checklist has several blank lines. What is the outcome?
NCCER Power Line Worker — Equipment Operation and Inspection
8. A student elevates the bucket with only three of four outriggers fully deployed, believing the fourth outrigger is on firm-enough ground without full extension. The instructor immediately calls a stop. Under the go/no-go evaluation criteria, what happens next?
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