PASMA Towers for Users flashcards
PASMA Towers for Users · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- EN 1004
- European product standard for mobile access and working towers, classifying towers by duty class and maximum platform height, and requiring a manufacturer's manual.
- EN 1004 height limits
- Maximum platform height of 8 m outdoors and 12 m indoors for towers to EN 1004; beyond these limits the tower is outside the standard's scope.
- BS 1139-6
- British standard for mobile towers not covered by EN 1004, permitting taller configurations when designed and checked accordingly.
- Duty class
- EN 1004 classification of a tower's rated load and use, such as light duty Class 3, which limits the number of persons and imposed load per platform.
- Stabilisers
- Outrigger components fitted to a mobile tower above a manufacturer-specified height to increase stability against overturning, and required as the manual states.
- Ballast
- Additional weight specified by the manufacturer to resist wind loading on a tower; it must never be omitted or reduced to save time.
- Declaration of conformity
- Document confirming a tower meets the relevant standard; it should be supplied with the tower and kept with the manual.
- Hire specification
- The written requirements given to a hire company: standard, duty class, platform height, indoor or outdoor use, and included components.
- Pre-hire inspection
- Checking a hired tower on delivery for bent braces, cracked welds, damaged threads, missing pins, and deformed platform hooks before accepting it.
- Hire package contents
- The components that must be included in the hire: frames, braces, platforms, guardrails, toe boards, castors, stabilisers, ballast, and the manual.
- Castor brakes
- Locking devices on tower castors that must be engaged before climbing; castors must suit the surface and have working brakes.
- Parts list check
- Comparing delivered components against the manufacturer's parts list to confirm nothing is missing before signing for the hire.
- Rejecting damaged towers
- Refusing towers with missing locking pins, bent frames, or damaged castors; damaged components must never be accepted for use.
- Moving a tower
- Only by pushing at the base, with no persons or materials on the platform, and only on firm level ground within the manual's limits.
- Wind limit
- The maximum wind speed stated in the manufacturer's manual, typically around 12.5 m/s, above which a tower must not be used outdoors.
- Internal access
- Climbing a tower only by its internal ladder or integral stairway; climbing the outside frames is prohibited.
- Prohibited additions
- Sheets, netting, banners, or signage attached to a tower, which increase wind loading and can overturn it.
- Ground conditions
- Firm, level ground for tower bases; spreader plates or sole boards are used on soft or uneven surfaces to spread the load.
- Duty load
- The maximum load a platform is rated to carry; loads must be evenly distributed and never concentrated at one edge.
- Top guardrail height
- The upper guardrail must be fitted between 950 mm and 1150 mm above the platform surface on all sides.
- Intermediate guardrail
- The mid-rail fitted at approximately 470 mm to 500 mm above the platform, between the top rail and the platform surface.
- Toe board height
- Toe boards must be at least 150 mm high and secured against displacement where objects could fall from the platform.
- Four-sided guardrails
- Guardrails are required on all four sides of every working platform, including the wall side where a fall gap exists.
- Platform decking
- Platforms must be fully decked with no gaps through which a person or tools could fall, and hatches closed when not in use.
- Platform locking devices
- Hooks and catches that secure platform units to the frame; they must be engaged before the platform is loaded.
- Guardrail misuse
- Using guardrails as anchor points for harnesses or as supports for lifting equipment is prohibited; they are for fall prevention only.
- 3T method
- Teach, Test, Tell: a trained and competent person assembles, inspects, and instructs others in the safe use of the tower.
- AGR
- Advanced Guardrail: a system where the guardrail is fitted from the platform below before the user steps onto the new level.
- Pre-use check
- Checking castors locked, ground firm, braces fitted, pins engaged, and guardrails and toe boards complete before first use each time.
- Seven-day inspection
- Formal inspection of a tower in use at intervals not exceeding 7 days, and after alteration, damage, or adverse weather.
- Assembly sequence
- Base and castors, first frame, braces, stabilisers, low platform, then progressively add frames and guardrails following the manual.
- Defective tower handling
- Tag out or dismantle any tower found defective during inspection; it must not return to use until repaired.