CSP-11 CSP-11 D1.06 · Domain 1 · Advanced Application of Safety Principles · 25%
Manual Handling / Drones
Maintenance inspects roof trusses every week. The current method sends a worker up a ladder carrying a 55-lb tool and camera bag; a pole camera or small drone could capture the required images from below. You are the CSP: can the climb and carry be removed, and if a separate floor lift remains, does the NIOSH 51-lb load constant make it acceptable?
Updated . Independent CSP-11 practice. Not BCSP-endorsed. No pass guarantee.
Decision rule
Eliminate the lift or the climb when a tool can do the work. RWL is a recommended weight, not a free-pass limit.
NIOSH RNLE starts at 51 lb and multiplies reductions. A drone removes a climb only if the airspace is boxed.
In 20 seconds
- Eliminate the lift or the climb when a tool can do the work.
- RWL is a recommended weight, not a free-pass limit.
- Eliminate the climb if a drone or remote camera can do the inspection.
- Remaining lifts use NIOSH RWL thinking — reduce load, distance, frequency, asymmetry.
How to apply Manual Handling / Drones
THEORY: Redesign origin/destination, height, and frequency before belts. LC = 51 lb. LI = load / RWL. LI > 1 means redesign, not a tougher crew. CALC: If all multipliers are 1, RWL = 51 lb. If a stem gives multipliers, multiply. Example 51 x 0.89 x 0.93 ≈ 42.2 lb. TI-30XS: 51x0.89x0.93=. Full multiplier walk is Class 109/126. FIELD: Weekly roof inspection that a drone can do inside a boxed airspace. Remove the climb; then control struck-by from the aircraft. ASSESS: 23 kg is not 23 lb. Do not treat LC as a legal PEL.
Worked case
Wrong first move: back belts and a 51 lb mantra for a far, low origin. Correct move: shorten the horizontal distance or hoist; consider a drone for inspection so the climb disappears.
Why the rule holds
Related: 06, 70, 109, 126.
Same rule, different setting
Weekly inspection of pipe-rack supports. Maintenance wants two people with a 55-lb tool bag on a ladder. A vendor offers a drone. You are the CSP. The question is whether anyone must climb, and whether 51 lb is a free pass.
Weekly inspection of roof trusses on a site shop. Maintenance wants two people with a 55-lb tool bag on a ladder. A vendor offers a drone. You are the CSP. The question is whether anyone must climb, and whether 51 lb is a free pass.
Picture / model
Hierarchy sketch: validate remote image quality → remove ladder carry → engineer any remaining access and material transfer. RNLE bar: RWL = LC×HM×VM×DM×AM×FM×CM, with LC=51 lb (23 kg) under ideal reference conditions; LI=Load/RWL. Separate drone box: flight path, people, battery, property/data, and—when FAA rules apply—pilot, airspace, Remote ID, visual-line-of-sight, and operations-over-people conditions.
Exam traps
Original SafePath contrasts for Manual Handling / Drones. These are study traps, not recalled BCSP items.
| Trap | Correct read |
|---|---|
| 51 lb so the lift is fine | LC = 51 lb; RWL is usually less |
| Drone inspection from the floor | Elimination of the climb and the carry |
| Two-person carry of 55 lb up a ladder | Fall + overexertion stacked |
| Drone over an occupied aisle | New struck-by — design the flight box |
Field move
A 55-pound bag on a ladder is the hazard the drone can remove.
Scenarios
Scenario 1 · Fundamental · CSP-11 D1.06
Weekly truss inspection. Two people, 55-lb tool bag, ladder. A drone can capture the same images. Best CSP recommendation?
Best action: Use the drone (flight box, no over-people) to eliminate the climb and the carry.
Why: Evaluate the weekly truss inspection. Two people, a 55-pound tool bag, and a ladder are the current method, and a drone can capture the same images. Use the drone, with a flight box and no flight over people, to eliminate the climb and the carry. Back belts, calling 55 close to 51, and training on…
Scenario 2 · Applied Scenario · CSP-11 D1.06
A stem gives LC as 23 kg. A technician uses 23 lb in the RWL product. What happened?
Best action: The 23 kg constant is about 51 lb; using 23 lb understates RWL before the task multipliers are applied.
Why: NIOSH Publication 94-110 states the load constant as 23 kg, about 51 lb. Exactly, 23 / 0.45359237 = 50.7 lb, which the manual rounds to 51 lb. Inserting 23 lb uses less than half of that constant and understates RWL before any task multiplier is applied.
Scenario 3 · Applied Scenario · CSP-11 D1.06
LI computes to 1.8. Supervisor says “two people makes LI 0.9.” Best comment?
Best action: Do not blindly halve LI. Two-person lifts have their own coupling and coordination problems; redesign height/weight/hoist rather than assuming 1.8/2.
Why: Evaluate the lifting index of 1.8. The supervisor says two people make the index 0.9. Do not blindly halve it. Two-person lifts have their own coupling and coordination problems. Redesign the height, the weight, or the hoist rather than assuming 1.8 divided by 2. Agreeing that headcount always divi…
If the stem says this
| Stem signal | Best direction |
|---|---|
| a drone or remote tool can replace climbing | eliminate the height exposure |
| RWL multipliers are poor | change the job — do not only coach lifting form |
| only back belts are proposed | reject as primary control |
| asymmetric reach is in the stem | redesign layout or use an aid |
| two answers work | higher hierarchy / system / design |
Check before you leave
- ✓ Eliminate the climb if a drone or remote camera can do the inspection.
- ✓ Remaining lifts use NIOSH RWL thinking — reduce load, distance, frequency, asymmetry.
- ✓ Design workstations and mechanical aids before back belts.
- ✓ Team lifts and training are administrative after engineering aids.
- ✓ Drones introduce new struck-by and fall-object controls — still hierarchy.
- ✓ Back belts are not a primary ergonomic control.
Blueprint mapping
Manual Handling / Drones is the SafePath study class for CSP-11 D1.06 inside CSP-11 Domain 1, Advanced Application of Safety Principles (25%). The largest CSP-11 domain. It tests whether you can select and evaluate practical controls across design, process safety, workplace hazards, life safety, fleet safety, materials handling, and equipment.
SafePath uses the publicly posted CSP-11 outline as a study map. It does not reproduce official exam content, and it is not affiliated with or endorsed by BCSP or Pearson VUE.
Practice / flashcards / formulas
More classes in Advanced Application of Safety Principles
Nearby lessons mapped to the same CSP-11 domain.
CSP-11 D1.06
Other classes on this task
Guides that use Manual Handling / Drones
- Construction safety study guideFalls, lifting, excavation, and design controls
- Manufacturing safety study guideGuarding, hazardous energy, and change
- CSP-11 exam prep guideDomain weights, sample items, and a study sequence
- CSP-11 blueprint and weightsSeven published domains and the class map
- Seven-domain study directoryScope, tasks, and links into each lesson
Manual Handling / Drones study questions
- What decision does the Manual Handling / Drones class train?
- Eliminate the lift or the climb when a tool can do the work. RWL is a recommended weight, not a free-pass limit. This is independent SafePath CSP practice for CSP-11 D1.06. It is not an official BCSP item and it is not a pass guarantee.
- What exam trap shows up in Manual Handling / Drones?
- A common miss treats this as sufficient: 51 lb so the lift is fine The stronger read is: LC = 51 lb; RWL is usually less
- How does Manual Handling / Drones map to the CSP-11 blueprint?
- SafePath maps this class to CSP-11 D1.06 in Domain 1, Advanced Application of Safety Principles (25% of the published blueprint). Use the public outline for study planning. SafePath is not affiliated with or endorsed by BCSP.
Verify
Verify: Confirm current certification requirements with BCSP and technical requirements with the cited authoritative standard.