Treat the CPCS A61 as a test of lift-planning decisions. Master LOLER Regulation 8 and its supporting duties, the BS 7121 role boundaries, and the arithmetic behind sling tensions and duty-chart margins, then rehearse each one as a written site scenario where you state the decision, the reason and the record. For administrative details of the assessment itself, use the issuer at https://www.cpcs.uk.org; this article teaches the planning knowledge the credential sits on.
Planning Decisions, Not Plant Knowledge: What the A61 Assesses
The A61 assesses the Appointed Person's planning competence: organising lifting operations, producing lift plans, allocating BS 7121 roles, and making defensible decisions about loads, cranes, ground and site hazards. Study each topic as a decision you must justify, then test it against a written scenario.
The knowledge base is specific and nameable: the LOLER duties on strength and stability, positioning and marking; the BS 7121 Part 1 planning method and roles; lift plan content; crane selection and duty charts; sling configurations and tension; exclusion zones, services and weather. Build your notes around the question 'what would the Appointed Person decide here?' rather than around isolated facts.
This differs from generic site-safety revision in one important way: every answer has three parts — the decision, the reason grounded in a named duty or standard, and the document that records it. A practical habit is to write a one-paragraph site situation for each topic, then answer in those three parts. Compare your three-part answer with a partner's: gaps in your document column usually reveal topics you know only as slogans.
LOLER Regulation 8 and BS 7121: The Duties Behind the Plan
LOLER Regulation 8 requires lifting operations to be properly planned by a competent person, appropriately supervised, and carried out in a safe way. Regulation 4 covers strength and stability, Regulation 6 positioning and installation, Regulation 7 marking of safe working loads. BS 7121 supplies the accepted planning method.
Regulation 8 is the Appointed Person's legal footing, but it cannot be applied in isolation. The plan must show that equipment is adequate for the load with regard to strength and stability (Regulation 4), that the crane is positioned and installed safely, including ground conditions (Regulation 6), and that every item is appropriately marked with its safe working load or, for accessories, its working load limit (Regulation 7). When you study, map each of these regulations to a section of a lift plan so the duties become checkable rather than abstract.
BS 7121 Part 1 sets out the planning steps these duties feed: identify the hazards, assess the load, select the crane and accessories, address ground, environment and proximity, produce the plan, brief the team, and supervise execution. A useful trace exercise: take a published plan outline and label each line with the regulation or BS 7121 step it evidences. Lines you cannot label are the areas where your reasoning is thinnest, and where scenario practice will pay off most.
Who Does What: Appointed Person, Crane Coordinator, Slinger and Operator
BS 7121 separates planning from execution. The Appointed Person plans the operation; the Crane Coordinator plans and controls lifts where coordination across cranes is needed; the Slinger/Signaller attaches loads and directs them; the Operator works the crane to the plan and signals received.
Boundary questions are where role knowledge becomes real. Anyone present can call a stop for safety; what the Appointed Person owns is the decision whether and how to resume, which normally means a revised plan and re-briefing. Conversely, verifying that the ground and mats match the plan is the Appointed Person's planning duty, while reporting an outrigger settling or sinking during the lift is the Operator's live responsibility.
Scenario to trace: a load arrives on site heavier than the plan assumed. The plausible mistake is to let the Slinger re-rig with bigger accessories on the spot. The better decision is to stop, have the Appointed Person recalculate crane capacity at the working radius with the true load and accessory weights, issue a revised plan, and re-brief. It matters because the original capacity comparison is void once the load changes, and only the plan holder has the full duty and information to redo it.
| Role | Core duty | Decision they own | Decision they escalate |
|---|---|---|---|
| Appointed Person | Plans the lifting operation and produces the lift plan under Regulation 8 | Crane and accessory selection, ground provisions, exclusion zone, revisions to the plan | Anything the employer or principal contractor must resource or authorise |
| Crane Coordinator | Coordinates lifts involving multiple cranes or conflicting operations | Sequencing and control where several lifts interact | Plan changes affecting crane selection or ground, back to the Appointed Person |
| Slinger/Signaller | Attaches and detaches loads and transmits signals to the Operator | Confirming the load matches the plan before attachment | Any deviation from the plan, unclear signals or changed conditions |
| Crane Operator | Operates the crane in line with the plan and received signals | Reporting outrigger, wind or visibility problems affecting the crane | Any instruction outside the plan's capacity or configuration limits |
Sling Angles and the WLL–MBL–SWL Chain: A Worked Calculation
MBL is the breaking strength of equipment; WLL is the maximum mass an accessory may lift, in a straight pull; SWL is the maximum load permitted in the specific configuration stated in the plan. Sling angle increases leg tension above the naive load share.
Worked scenario: a 4-tonne lattice beam hangs from a two-leg chain sling with a 120-degree included angle, so each leg sits 60 degrees from vertical. The plausible mistake is dividing the load evenly and rigging two legs with a 2-tonne WLL each. The better decision is to apply the symmetric-leg relation — leg tension = load ÷ (number of legs × cos of the angle from vertical) — giving 4 ÷ (2 × cos 60°) = 4 ÷ 1 = 4 tonnes per leg. Accessories marked 2 tonnes WLL in straight pull are therefore grossly overloaded in this configuration.
Why it matters: the plan's stated SWL only holds if the accessories, their hitches and the geometry behind it are honoured. The remedies in practice are to reduce the included angle, use longer legs or a spreader, or select accessories whose marked WLL still exceeds the computed leg tension. When rehearsing, always finish the chain: compute the tension, compare it against the marked WLL for that hitch, and record the resulting SWL in the plan.
| Term | Applies to | Set by |
|---|---|---|
| MBL (minimum breaking load) | The component itself, from the manufacturer | Manufacturer testing |
| WLL (working load limit) | Accessories in a straight pull, marked on the item | Manufacturer and marking rules |
| SWL (safe working load) | The item in the specific situation defined by the lift plan | The Appointed Person's plan |
Duty Charts, Radius and Ground: Checking the Crane Can Actually Do It
Crane capacity falls as radius increases, so the planner must read the duty chart for the exact configuration — boom length, radius, outrigger base, counterweight — and compare it against the load plus hook block and accessories, then confirm the ground can carry the resulting outrigger loads.
Worked scenario: a 6-tonne load is planned at a 16-metre radius, with 0.4 tonnes of slinging gear and a 0.6-tonne hook block. The plausible mistake is checking the 6-tonne load against the chart's best figure, or against the line at 14 metres, and concluding there is ample margin. The better decision is to read the chart for the exact boom and counterweight at 16 metres, then compare that value against 6 + 0.4 + 0.6 = 7.0 tonnes, showing the arithmetic in the plan. It matters because radius creep during the lift is only survivable if the plan's margin was real at the true radius.
Ground and positioning carry the other half of this check. Regulation 6 requires safe positioning and installation, which for a mobile crane means the heavier outrigger loads are spread by mats onto ground assessed for bearing and checked for voids, drains and buried services. The plan should also state weather limits from the crane manufacturer's data, because wind derates apply exactly like the duty chart does. In your scenario drills, make yourself write these three lines every time: capacity at true radius, deduction arithmetic, ground provision.
Build and Stress-Test a One-Page Lift Plan: Practice Exercise
Draft a one-page lift plan for a described load, then score it against a rubric covering duties, roles, capacity arithmetic, sling tension, ground and exclusion controls, and the stop/restart rule. Redraft until every rubric line is explicit and evidenced in the document.
Setup: plan a 3-tonne generator lift using a two-leg sling with a 45-degree included angle, a mobile crane working at a 12-metre radius, and a site corner where an overhead line runs along one boundary. Write the plan sections from scratch: load details, crane and configuration, accessory schedule with tensions, ground provisions, exclusion zone and signals, roles by name, and the stop/restart rule. Time yourself once, then repeat the same load with the radius increased to see which sections change.
Expected observations when you check your draft: the capacity line should show the deduction arithmetic (hook block and gear subtracted before comparison), the tension line should show the cosine calculation against the marked WLL, and the stop rule should name who decides and which conditions — changed load, ground movement, wind, personnel inside the zone — trigger a revised plan. Self-check rubric, one point each:
Regulation 8 elements are named and each is evidenced by a plan section; roles are assigned to named people with escalations clear; capacity is checked at the actual radius with deductions shown; sling tensions are computed at the actual included angle and compared to marked WLL; ground, services and exclusion zone controls are stated with the stop/restart decision rule. Score it honestly, treat the result as a learning milestone rather than a pass prediction, and redraft the weakest line first.
A Preparation Sequence and Readiness Checks
Run a five-stage sequence: duties and roles first, then capacity and sling arithmetic, then hazards and plan documents, then scenario drills, then rubric-scored plan redrafts. Stretch or compress the stages to fit your calendar, and finish when the readiness checks below hold without notes.
Stage by stage: begin by mapping Regulations 4, 6, 7 and 8 onto a plan outline and naming the BS 7121 roles. Next drill the arithmetic — leg tension at different included angles, and duty-chart comparisons with deductions — until the chain from tension to marked WLL to stated SWL is automatic. Then study hazard controls: services, proximity, exclusion zones, weather. Finish with alternating drills: one role-boundary scenario, one calculation, one full plan redraft per session, always writing decision, reason and document.
Readiness checks to close out: you can state Regulation 8's three requirements and point to the plan section evidencing each; you can compute leg tension for a given included angle and verify it against marked WLL; given a duty-chart extract and a radius you can complete the capacity comparison including hook block and accessories; you can name each role's duty and say who decides to stop and who decides to resume; and your rubric scores show every line fully met on a cold draft. Confirm the assessment's current format and any prerequisites directly with the issuer, since administrative detail belongs to CPCS, not to study material.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.