Some help with british standard bs en 1570: 1999 Safety requirements for lifting tables




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SOME HELP WITH BRITISH STANDARD BS EN 1570:1999

Safety requirements for

lifting tables
This is intended to help as a brief guide / overview through some selected parts of the current ‘Scissor Lift Table’ or ‘Platform Lift’ standard. The headings and numbering when shown follows the precedent in the Official Standard. For brevity and because we choose to concentrate on hydraulic lift tables we have omitted large parts of the Standard that may be important but are not common topics when discussing Manual and Electro Hydraulic Scissor Lift Tables with clients and specifiers. We strongly recommend that you obtain a copy of the current Standard and do not rely on this as a comprehensive or specifically accurate document. Please advise us of any errors you may discover.
Where an example of a safety measure is shown it may be one of many. Another solution leading to an equal risk reduction is often acceptable if it provides an equivalent level of safety.

Where there are any essential or unusual criteria advise the manufacturer in writing.

Consult the competent safety authorities (HSE, Fire, Building Control) and your insurers.

We have assumed that only trained and authorised people will operate the lifting tables.


1 Scope

BS EN 1570 specifies the safety requirements for lifting tables, power or manually operated including whether stationary or mobile for raising and/or lowering goods and/or persons associated with the movement of goods carried by the lifting table (i.e. not for passenger use), for a vertical travel of up to 3,0 m. It attempts to address all significant hazards applicable to platform lifts when used in foreseen situations and as intended by the manufacturer. EN1570 states many appropriate technical steps to eradicate or lessen risks stemming from these identified significant hazards.

EN 1570 does not cover all types of Lifting Tables, this does not mean that lifting tables cannot be made to be suitable, safe and fit for the purpose required and then certified appropriately. Eg. You need to consider what must be done to a Scissor Lift Table if you wish to make it suitable for a person of impaired mobility to use it safely in a work environment. You should also look to see if there are other applicable standards Eg. BS6440.

When using lift tables for vehicle loading you may wish to also review EN 1398 – The Dock Levellers Standard.
The following is a list of the more frequently considered applications outside the scope or not covered by BSEN1570:

permanently installed lifting tables, serving specific levels of a building and fitted with a car – see current definition of a lift ‘car’;

permanently installed lifting tables, serving specific levels of a building, not fitted with a car but with

a vertical travel of more than 2,000mm;

power operated lifting platforms for persons with impaired mobility;

lifting tables for airport ground equipment, marine use;

mobile elevating work platforms (MEWPS);

vehicle lifts for maintenance;

mobile lifting tables used for fire fighting, used as fork lift trucks, pallet trucks and order pickers;

mobile lifting tables with a travelling speed of more than 1,6 m/s;

rail dependent storage and retrieval equipment;

theatre stage lifts.


2 Normative references Refer to Standard

3 Definitions

For the purposes of EN 1570 the following definitions apply:



lifting table - load lifting device with a load supporting platform guided throughout its travel (e.g. guided by its own mechanism.)

load platform - the part of the lifting table designed to accommodate the working load and/or persons. Fork arms are considered as a load platform for goods only

vertical travel - the vertical distance between the highest and the lowest working position for which the lifting table is designed

nominal load - the load that the manufacturer has guaranteed that the machine will lift when used in accordance with the instruction handbook

guard - part of machine specifically used to provide protection by means of a physical barrier

safe by position - condition when a table or part of table is sufficiently shielded from access to avoid any hazard to persons or goods

4 List of hazards - Refer to Standard and EN 1050
5 Safety requirements

If people are to travel on the load platform, their load shall be deemed as a minimum of 80 kg. concentrated in an area of 200mm x 200mm for each person, spaced apart at 500mm centres and placed in the most unfavourable position on the platform for stress calculations.


Lift tables shall be designed to as a minimum lift half the rated load distributed over half the platform length or lift one third of the rated load distributed over half the platform width. In neither case shall hazardous tilting or deflection take place when used as intended by the manufacturer. Do however remember that unevenly loaded lifts will probably show a measurable level of deflection especially if used towards the upper level of the rated safe working load.
Consideration must be given to the different types of loads and the method of loading and unloading the platform in various positions. Eg.: Concentrated loads, point loads, rolling loads, single axle or wheel loads
Safeguarding – Think crush, trap and shear!

Clearances. Generally crushing and shearing shall be avoided by the following minimum gaps between moving parts and between moving and fixed parts:

25mm. for fingers, 50mm. for toes, 100mm. for hands, 120mm. for feet, arms and closed hands, 500mm. for the body. Alternatively other safety measures shall be taken to avoid the operator or any other persons being endangered, e.g: barriers, deflectors, non-mechanically actuated trip devices complying with prEN 50100, mechanically actuated trip devices complying with category 1 of EN 954-1, multiple controls requiring simultaneous operation or / and screens. Sometimes these examples will not be sufficient by themselves and should be used in conjunction with each other or other equivalent methods.
In scissor type lifts there are specified minimum safety gaps between the scissor arms. See Figure 1 in the Standard.

When lowering a minimum of free space for the feet shall be provided in accordance with Figure 2 in the Standard to prevent crushing and shearing of feet.

Where the machine is fully enclosed with an imperforate rigid guard or is “safe by position” the minimum gaps are not necessary. If the machine is only partly enclosed by an imperforate rigid guard, then an acceptable alternative must be provided to guard the parts of the machine not enclosed.

If a perforate rigid guard is used then this shall comply with the requirements of standards EN 294

and EN 811.

If a mechanically actuated trip device (anti-trap bar or sensitive edge) is fitted to the edges of the platform then it is necessary to maintain only the minimum gaps for fingers inside the area safeguarded by the device. These safety devices shall operate so that the moving part causing the hazard comes to a stop before injury is caused. They shall not create another hazard.

Where a mechanically actuated trip device (e.g. anti trap bar) is fitted to the underside of the

platform, the anti-trap device when actuated shall stop all downward movement of the platform and hold it

stopped until the down control has been released, the obstruction removed, the device reset (either

manually or automatically) and the down control re-operated. It shall always be possible to raise the platform in order to clear the obstruction.

Lifting tables which have a fixed control point on the platform, shall have at least one standing place

with an area of 500mm. by 600mm. with a secure handhold for the operator. If outward opening gates are fitted they shall be automatically interlocked with the control system of the vertical travel of the platform (interlocks shall be in accordance with EN 1088).

Lifting tables that have a vertical travel of more than 2,0 m shall be fitted with means to prevent persons or goods falling from the platform.

For persons these means shall, as a minimum, consist of guard-rails at least 1,100mm high, toe-guards

at 150mm high and intermediate guard-rails not further than 500mm from either the guard-rail or toe-guards.

If gates or opening parts of the barrier are fitted, they shall be interlocked with the control system so that

the platform can be moved only when the barrier is closed. Furthermore outward opening parts shall be

interlocked in such a way that these parts can only be opened when the platform is in a clearly defined

access position.

Unless the lifting table is designed to enable all maintenance work to be carried out when the platform is fully lowered on to mechanical depth stops a manually operated blocking device, also known as a maintenance prop or safety locks, shall be fitted to all lifting tables to allow maintenance work to be carried out below the platform in safety. This device shall be capable of supporting the platform with its rated load, and of being operated from a safe position.

Lifting tables which operate in areas to which the public (especially small children) could reasonably

be foreseen to have access, shall be enclosed by a rigid guard to prevent the hazard due to the descending

platform. Alternatively, a semi-rigid guard (e.g. mesh or material) can be fitted in conjunction with a

mechanically actuated trip device / perimeter anti trap bar.






The lifting and lowering speeds of the platform shall not exceed 150mm. per second, except where the platform is automatically programme controlled and “safe by position”.

Platforms which are entered by persons shall be fitted with an anti-slip surface (e.g. Tear or Durbar plate,

grit surface, anti-slip mats).

Emergency lowering devices, where fitted, shall be of the ‘hold-to-run’ type. These devices shall be

fitted in a safely accessible position and shall not be capable of unauthorized operation.
The operator’s position shall give the operator a clear view of the platform and its load at all times throughout its travel.

All controls shall be of the hold-to-run (deadman) type and be designed to prevent unintentional operation. This does not apply to automatically controlled movements of the lifting table.


Where alternative controls are fitted in multiple locations they shall be wired so that only one set can be in use at any one time, excluding the emergency stops.

Platform mounted controls must always have priority, when operated, over the off-platform positioned controls, excluding the emergency stops. If there is only a control position on the lift platform, there must be at least one additional emergency stop control not on the lift platform and in an easily accessible position.


Mobile lifting tables

All manually operated mobile lifting tables shall be fitted with a device to prevent unintentional movements of the lifting table (e.g. parking brake, truck lock).

The maximum manual forces required from one person for mobile lifting table operations shall not exceed the following

figures:


300 N to start an unloaded lifting table moving from rest: 300 N; to continue the movement: 200 N.
Hydraulic system

A pressure relief valve shall be fitted in all hydraulic systems and shall be positioned and set so that not more than 110 % of the maximum working pressure can be achieved. Where adjustable, the adjustment of this valve shall require the use of tools. It shall be positioned so that it will not cause the platform to descend out of control if an overload is placed on the raised platform.

All hydraulic drives shall be equipped with an automatic fail-safe device to limit unintentional

lowering of the platform to a maximum of 100 mm and to stop the platform at any height, in case of rupture

in the hydraulic supply line. This device shall be designed to carry 150 % of the rated load.

When a hand pump is used to operate the lifting table, the operating force on the handle provided,

measured at the end of the handle when raising the rated load, shall not exceed 200 N when operating

according to the manufacturer’s instructions. This 200 N may be increased to 300 N for foot pumps.


6 Marking - refer to Standard

7 Information for use - The manufacturer shall supply with each lifting table a set of operating instructions as described in the Standard. The instructions must be sufficient for the safe operation of the lifting table and in the language of the Country that the lift is to be used in. Remember the lift must only be used as the manufacturer intended.

8 Verification of the safety requirements and/or measures – refer to Standard


Regulations


Below is a guide to a sample of the applicable Standards and Directives. It must however be noted that customers/operators must ensure that their working practices are in accordance with relevant legislation, and Risk Assessments are carried out prior to operation.


CE Marking


CE Marking is a manufacturer’s declaration that a product complies with the provisions of all applicable Directives, including the essential safety and health requirements, and is proven by the demonstration of a route of compliance.
More information on the CE Marking of a product


Directives


Directives are legal requirements; without meeting all relevant Directives, products cannot legally be placed on the market place across the EU.

Machinery Directive 98/37/EC


The Machinery Directive 98/37/EC provides a regulated harmonisation of the essential Health & Safety requirements for machinery* throughout Europe. Compliance with the Machinery Directive guarantees a high level of protection to anyone using such equipment, as well as promoting the free movement of machinery across Europe.

PDF - Machinery Directive 98/37/EC

*Machinery - An assembly of linked parts or components, at least one of which moves, with the appropriate actuators, control and power circuits, etc., joined together for a specific application, in particular for the processing, treatment, moving or packaging of a material [Machinery Directive 98/37/EC]


Use of Work Equipment Directive 89/655/EEC


The Use of Work Equipment Directive concerns the minimum health and safety requirements for the use of equipment whilst at work, including new and second hand equipment.
Generally it requires that all equipment provided for use at work is:

* Suitable for the intended use


* Safe for use, i.e. inspected and maintained.
* Used only by people who have received suitable information, instruction and training.
* Fitted with suitable safety measures.

PDF - Equipment Directive 89/655/EEC


Standards


It is accepted that compliance with the relevant harmonised Standards of a product presumes conformity with the corresponding EC Directive, and compliance with the relevant Standard is the most common route of compliance to substantiate CE Marking of a product.

Regulations


The Health and Safety at Work Act 1974 is a law in place to secure health, safety and welfare of persons at work, and there are numerous Regulations enforced under the Health and Safety at Work Act in the UK to enable companies to meet the relevant requirements.

Additionally, these Regulations are more detailed ways of achieving the requirements of the applicable Directives in the EU. PUWER and LOLER for example have been put in place to help UK companies achieve the requirements of the European Directive (Use of Work Equipment Regulations 89/655/EEC).


The Provision and Use of Work Equipment Regulations 1998 (PUWER)


To help ensure our customers comply with the requirements of PUWER, all our equipment is supplied with detailed operating and installation instructions where necessary to allow the end user to install & operate the equipment in a safe manner. Training is also available on all our products if required. Our extensive product range and experienced staff also help ensure that we provide the most suitable solution for our customers. A recommended maintenance routine is also provided to ensure safe condition of the equipment. Though we take action to reduce risks at the design stage of your equipment, it is still down to the end user to ensure all operators of the equipment are suitably trained, and carry out their own risk assessments prior to operating the equipment.

PDF - HSE guide to PUWER
Website - view the Regulation

Lifting Operations and Lifting Equipment Regulations 1998 (LOLER)


LOLER is in many ways similar to PUWER, but with more focus on specific lifting operations and equipment.

PDF - HSE guide to LOLER
Webpage - view the Regulation

Supply of Machinery (Safety) Regulations 1992 (SMSR)


This regulation is the UK law that implements the requirements of the EC Machinery Directive (see above). It places a duty upon the supplier of the equipment to ensure all relevant precautions have been taken to provide equipment that is fit for purpose, and has safety features in place where necessary. The supplier can then issue a certificate of conformity, detailing their address, machine type and serial number, and standards used in the design. Once done, a CE marking can then be affixed to the machine.

Webpage - view the Regulation

The Manual Handling Operations Regulations 1992 (MHO)


The Health & Safety Executive (HSE) gives guidance as to the maximum recommended loads to be lifted in order to minimise risk of injury whilst carrying out a lifting/manual handling operation.
From these guidelines, the maximum weight or force one man should move or operate is 25kg at approximately waist height. If the weight or force required is greater than that, then two men will be required up to a maximum weight of 50kg. Above 50kg provision of other methods to reduce the weight must be provided i.e Fork Truck Lifting Handles or Wheels for easy movement etc.

PDF - HSE guideline "Getting to grips with Manual Handling"
Webpage - view the Regulation









Periodic Inspection of

Lifting Table

EN1570:1998 & A1:2004




User
Address

Location
Manufacturer/Model
Serial No./ Year of Manufacture
Date of Installation or initial inspection







VISUAL

CHECK


TEST

CHECK


Remarks / Comments

ELECTRICAL SYSTEM




Earth continuity










Electrical safety device










Guard interlocks










Other













DRIVE SYSTEMS




Mechanical drives










Gear box










Hydraulic drives










Power unit










Hydraulic cylinder(s)










Rupture valves










Pipe work










Anti creep device(s)










Other













MECHANICAL DEVICES













SCISSOR MECHANISM













SAFETY SUPPORT DEVICES













MECHANICAL GUARDING













Organisation:

Name of inspector:



Checked:

Signature:

Date of inspection:






Any other notes:

Power-Lifts Limited, Nottingham. 0115 926 9996 www.powerlift.co.uk


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