Scaffolding Regs

Since everyone is so keen on H&S issues I will kick off with impending regs

Heres one. Im including this because we use scaffolds in our industry.


Tower scaffolds
CIS10(rev4)
First published 2005

Scaffolding: RISK MANAGEMENT; Safe systems

Introduction

This information sheet is aimed at users of mobile access towers (also known as tower scaffolds or towers). It will also help those who select and specify such equipment.

The Work at Height Regulations 2005 require an assessment to be undertaken before starting any work at height. If the assessment confirms that there is no alternative to working at height, then suitable work equipment should be selected, taking into account the nature of the work.

Mobile access towers are widely used and can provide an effective and safe means of gaining access to work at height. However, inappropriate erection and misuse of towers are the cause of numerous accidents each year. Aluminium and thin-wall steel towers are light and can easily overturn if used incorrectly. Towers rely on all parts being in place to ensure adequate strength. They can collapse if sections are left out.

Before selecting or specifying a tower, you must be satisfied that it is the most suitable item of equipment for the job.

Erecting a tower

Many types of mobile access towers are available. The manufacturer or supplier has a duty to provide an instruction manual which explains the e
ection sequence, including any bracing requirements. If the tower has been hired, the hirer has a duty to provide this information. This information must be passed on to the person erecting the tower.

Towers should be erected following a safe method of work. There are two approved methods recommended by the Prefabricated Access Suppliers’ and Manufacturers’ Association (PASMA), which have been developed in co-operation with the Health and Safety Executive.

The first method, an advance guard rail system, makes use of specially designed temporary guard rail units, which are locked in place from the level below and moved up to the platform level. The temporary guard rail units provide collective fall prevention and are in place before the operator accesses the platform to fit the permanent guard rails. The progressive erection of guard rails from a protected area at a lower level ensures the operator is never exposed to the risk of falling from an unguarded platform.


Figure 1 Advance guard rail. Example 1

Figure 2 Advance guard rail. Example 2

The second method of erection is the ‘through-the-trap’ (3T). This allows the person erecting the tower to position themself at minimum risk during the installation of guard rails to the next level. It involves the operator taking up a working position in the trap door of the platform, from where they can add or remove the components which act as the guard rails on the level above the platform. It is designed to ensure that the operator does not stand on an unguarded platform, but installs the components to a particular level while positioned within the trap door of that same level.

The 3T method makes use of standard tower components. Towers should only be erected by trained and competent people. There are a number of organisations that provide training for the safe erection and use of tower scaffolds following the methods described above.

Figure 3 ‘Through the trap’ (3T). Example 1


Figure 4 ‘Through the trap’ (3T). Example 2
Stability

Make sure the tower is resting on firm, level ground with the locked castors or base plates properly supported. Never use bricks or building blocks to take the weight of any part of the tower.

Always check the safe working height by referring to the instruction manual. Towers should never be erected to heights above those recommended by the manufacturer.
Always install stabilisers or outriggers when advised to do so in the instruction manual.

Remember, the stability of any tower is easily affected. Unless the tower has been specifically designed for such use, activities such as those listed below should never be carried out:

| sheeting or exposure to strong winds;

| loading with heavy equipment; and

| using the tower to hoist materials or support rubbish chutes.

Using the tower

There must be a safe way to get to an

d from the work platform. This must be on the inside of the tower by an appropriately designed built-in ladder. It is not safe to climb up the rungs on the end frames unless the rungs have been specifically designed for the purpose of getting to and from the working platform – these have rung spacings of between 230 and 300 mm and an anti-slip surface. If you are in doubt, consult the instruction manual.

Falls must be prevented where there is a risk that a fall could result in personal injury. The working platform must be provided with suitable edge protection and toe boards. Guard rails should be at least 950 mm high and an intermediate guard rail should be provided so the unprotected gap does not exceed 470 mm.

Never use a tower:
| as a support for ladders, trestles or other access equipment;

| in weather conditions which are likely to make it unstable;

| with broken or missing parts;

| with incompatible components.
Moving the tower
When moving a tower:

| reduce the height to a maximum of 4 m;

| check that there are no power lines or other obstructions overhead;

| check that the ground is firm, level and free from potholes;

| push or pull using manual effort from the base only – never use powered vehicles;


| never move it while there are people or materials on the tower;

| never move it in windy conditions.



Ref:
(Information derived from Lexis Nexis Butterworths)