Power Point 12 - Access Equipment and Hazards

Question 1

Name 5 different types of ladders and their uses

Answer 1

Pole - Used for access to scaffolds & used upto 12m

Extension Ladders - Are split into sections and are extendable to reach required height Step Ladders - Are mainly used indoor, must be used on a firm base

Roof Ladders - For use on sloped roofs, must be accessed from a scaffold not a ladder. additionally must be hooked on to prevent falling/slipping down roof

Question 2

Describe the steps on how to use ladders safely

Answer 2

Inspected before every use

Must only be based on firm, hard ground

Must be raised by 2 people

Should stand at an angle of 1:4 (one unit out four units up)

Must be secured if more than 3m up or otherwise footed

Should extend at least five rungs (or 1.07m above landing) Never over reach when using

Question 3

Pre-use checks for ladders

Answer 3

visual inspection for - Missing, damaged anti slip on metal fiberglass ladders items stuck to feet (dirt, stones or other debris) Mud, grease or oil on rungs, stiles, steps or platform Cracks, splits, bends or warps in the rungs, stiles or platform Missing broken or weakened rungs Missing or damaged tie rod Cracked damaged fastenings (welds, rivets etc) Rust or sharp edges

Question 4

What is PASMA?

Answer 4

Pre-fabricated access suppliers and manufacturers association

Question 5

What is a MEWP?

Answer 5

Mobile elevated work platform

Question 6

Who has a duty to supply an instruction manual for the erection sequence of a scaffold?

Answer 6

Manufacturer or supplier

Question 7

What are the 9 requirements for a scaffold tower?

Answer 7

1 - Tubes must be straight

2 - Tubes and fittings must be undamaged

3 - The ground which it is placed must be firm and even

4 - Base plates must be used (Adjustable plates can be used on ground that is not level)

5 - Sole plates must be used on ground that is soft to distribute weight

6 - Foot ties or plan bracing must be fitted as low as possible

7 - Working platforms should be close boarded

8 - Overhang boards must not exceed the thickness of the boards and no less than 50mm past the support

9 - Platforms higher than 2m must have toe boards fitted at least 150mm height and guard rails between 920mm high and 1150mm high

Question 8

Name the 5 other types of access equipment used by electricians?

Answer 8

1 - Podium Steps - Steps on casters with handles 2 - Telescopic ladders - Retractable ladders 3 - Mobile scissor lift 4 - Cherry picker 5 - Crawl boards - for access in lofts

Question 9

Power Point 13 - Dealing with Hazards - List 5 different types of hazardous substances

Answer 9

1 - Adhesives 2 - Solvents 3 - Lubricants 4 - Jointing compounds 5 - Cleaning agents

Question 10

List 5 different precautions taken when working with Hazardous substances

Answer 10

1 - PPE 2 - Ventilation 3 - Risk assessment 4 - Method statements 5 - Safe systems of work

Question 11

What is a safe system of work?

Answer 11

A safe system of work is a method that results from a systematic examination of the working process to identify the hazards and to specify work methods designed either to completely remove the hazards or to control and minimize the risk

Question 12

What is a method statement?

Answer 12

A method statement is a description of a safe system of work, presenting in a logical sequence and generally in writing a method of undertaking an activity without risk to health.

Question 13

What is the 6 points in order of the hierarchy of control?

Answer 13

1 - Eliminate - ‘Does this hole need to be there?’ 2 - Substitute - ‘Can this task be done somewhere else?’ 3 - Isolate - e.g. by putting something over the hole to cover it 4 - Control - e.g. by introducing guarding around the hole 5 - Manage - e.g. By implementing a safe system of work near a hole 6 - PPE - e.g. By working with a harness or a rope

Question 14

Describe a Permit to Work?

Answer 14

A permit to work is a procedure written safe system of work that ensures potentially dangerous work is done safely. It also serves as a means of communication between all members on the work site. It is not a replacement of a risk assessment

Question 15

What are the 2 hazards associated with adhesives?

Answer 15

Give of harmful fumes Can cause health problems if ingested or absorbed through the skin

Question 16

What are the hazards associated with solvents?

Answer 16

1 - Highly flammable 2 - Some can be explosive 3 - Toxic 4 - Can cause unconsciousness or death 5 - Some are carcinogenic 6 - Can have environmental effects

Question 17

What is a solvent?

Answer 17

A solvent is a substance which dissolves a different type of chemical, liquid, gas or solid

Question 18

What is a lubricant?

Answer 18

A substance used to reduce friction

Question 19

What are the 3 hazards associated with lubricants?

Answer 19

1 - Slippery when on surfaces 2 - Dermatitis 3 - Flammability

Question 20

What 6 precautions should be taken when using solvents?

Answer 20

1 - Fume hood, to avoid vapors exposure 2 - Store containers securely 3 - Don’t use near open flames 4 - Never flush down the toilet 5 - Avoid inhalation 6 - Avoid contact with the skin

Question 21

What is a cleaning agent?

Answer 21

Typically liquids used for removing; dirt, rust, stains, bad smells Can be solvent based or solvent containing

Question 22

Name 5 dangers from electrical equipment on a work site

Answer 22

Exposed conductors Damaged insulation Buried or hidden cables trailing cables Faulty electrical equipment

Question 23

List 4 advantages of using battery powered supplies on a work site

Answer 23

1 - Low voltage - Less risk of shock 2 - Can be used in areas with no mains 3 - Greater mobility 4 - No leads

Question 24

List advantages of 110V equipment used on a building site

Answer 24

1 - Derived from a transformer 2 - The secondary winding is center tapped i.e. either pole resulting in a 55V shock in the event of an earth fault

Question 25

Draw a 110V generator diagram

Answer 25

Question 26

List the 2 steps of visual inspection of portable appliances

Answer 26

1 - Check for a valid PAT Label

2 - Visual inspection of casing, cable, plug and cable grips