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Work Equipment (Workplace Machinery) Flashcards

1
Q

Regs covering the Workplace Machinery

A

Supply of Machinery (Safety) Regulations 2008 (SMSR)

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2
Q

Relationship between SMSR and PUWER

A

SMSR places duties on the supplier to ensure machinery complies.
PUWER is concerned with worker safety and employers duty to ensure it is safe for use

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3
Q

Principles of Safety Integration definition

A

Machinery must be designed and constructed so it is fit for its function and can be operated, adjusted and maintained without putting people at risk

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4
Q

3 Principles of Safety Integration

A

Eliminate or Reduce risks
Take necessary protective measures
Inform users of the residual risks

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5
Q

Risk Assessment for Machinery

A 
Determine the limits of the machinery
Identify the hazards
Estimate the risks
Evaluate the risks
Eliminate the hazards or reduce the risks
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6
Q

Machinery limits

A

Use
Space
Time
Other

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7
Q

Use limits

A

include intended use and the reasonably foreseeable missue.
Includes:
Different operating modes
Use of machinery e.g. industrial, domestic
General info about intended user population
Anticipated levels of training required
Exposure to other persons of hazards associated with the machinery

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8
Q

Space limits

A

Range of movement
Space requirements for person to interact with the machinery
Human interaction
Machine power-supply interface

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9
Q

Time limits

A

Life limit of the machinery

Recommended service intervals

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10
Q

Other limits

A

Environmental considerations
Housekeeping
Properties of materials to be processed

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11
Q

Risk Estimation

A

1) the exposure of the person to the hazard
2) the occurance of a hazardous event
3) the technical and human possibilities of avoiding or limiting the harm

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12
Q

Risk Evaluation

A

Determines if risk reduction is required or not

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13
Q

Risk Reduction 3 staged approach

A

1) Inherently Safe Design - Eliminate
2) Risk Reduction - Reduce using guards etc.
3) Provision of information - Instructions, PPE etc.

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14
Q

Process for CE Marking

A

1) Catagorise the product
2) Check application of additional directives
3) Ensure requirements of safety regs are met
4) Perform the risk assessment
5) Compile the technical file
6) Issue the declaration of conformity
7) Affix the CE mark

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15
Q

Mechanical Hazards - EnTICE

A 
Entanglement
Traps
Impacts
Contacts
Ejection
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16
Q

Non-mechanical Hazards

A 
Electrical
Thermal
Noise
Vibration
Radiation
Materials and Substance
Ergonomic
Slip Trip
Environmental Hazards
Combination of the above
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17
Q

Mechanical Hazards

A

To do with the moving parts of the machine

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18
Q

Non-mechanical Hazards

A

To do with all other aspects

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19
Q

CNC Machinery

A

Computer Numeric Machinery. Machinery programmed with a code enabling them to repeat operations with increased speed and a high level of precision

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20
Q

Protective Devices PUWER Regs

A

Absolute duty to take effective measures to either
Prevent access to the dangerous part of the machinery or to any rotating stock-bar
To stop the movement of any dangerous part of machinery or rotating stock bar before any part of a person enters the danger zone

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21
Q

Hierarchy for Machine Guarding

A

Fixed Guards
Other guards and protection devices
Protection Appliances

22
Q

Protection Devices

A

Stop movement of dangerous part before contact can be made e,g trip devices, light curtains, pressure sensitive mats

23
Q

Protection appliances

A

Used to hold or manipulate a work piece at a machine whilst keeping the operators body clear of the danger zone

24
Q

Fixed guards

A

Enclosing guard - prevents access to DZ from all sides

Distance guard - does not completely enclose DZ but prevents access due to its distance from DZ such as a perimeter fence or a tunnel guard

25
Advantages of fixed guards
``` Low cost Easy to monitor by visual inspection Can only be defeated by intentional act Min ongoing maintenance May offer additional protection for noise, dust, ejected parts ```
26
Disadvantages of fixed guards
Removal doesn't stop the machine If it needs to be removed regularly for maintenance it is likely to be left off May impede operators view May impede ventilation
27
Other guards
Interlocked (moveable) guards Adjustable guards Self-adjusting guards Automatic (Sweep) guards
28
Protection Devices
Mechanical trip devices Active Opto-Electronic Devices (AOED) - Light curtains Pressure-sensitive mats Two-hand controls
29
Interlocked guards
Machine cannot operate until guard is in place Opening the guard whilst the machine is operating will stop the machine Closing the guard does not by itself restart the machine
30
Trapped Key / Key Transfer System
The guard lock and switch are separate. The removable key is trapped in either the guard lock or switch lock.
31
Advantages of interlocked guards
Convenient where frequent access is required Allow safe access when opened machine is powered down
32
Disadvantages of interlocked guards
Complex systems requiring regular testing and maintenance Components may fail in use May be defeated Failure may not be apparent until after an incident
33
Self-closing guards
Automatically open and close as the work piece is put in and pulled out. The moveable guard automatically returns by spring or gravity to a closed position as soon as the work piece has been moved away
34
Advantages of self-closing guards
Automatically adjust to accommodate the workpiece
35
Disadvantages of self-closing guards
Only provide a partial guarding solution as it still allows some access to dangerous parts Require regular maintenance and inspection
36
Adjustable guards
Used on traditional engineering workshop machines. | They rely on the operator to set the guard up properly for each operation
37
Advantages of adjustable guards
Probably the only solution when a workpiece needs to come into contact with a cutting tool
38
Disadvantages of adjustable guards
Have to leave part of the cutting tool accessible to do the job May be set to accommodate the largest job on a shift and not adjusted for each piece Can be removed and the machine is still usable.
39
Two-handed Controls
Can be used when guarding is impractical to ensure the operator is outside of and unable to reach the danger zone as both hands are required to use the control which is positioned away from danger
40
Advantages of two-handed controls
Ensures the operator is in a safe position
41
Disadvantages of two-handed controls
Only protects the operator | Can be defeated
42
Electro-Sensitive Protective Equipment (ESPE)
Light curtain or light beam device. If beam is broken the machine will stop
43
Advantages of Light Beams
Allow and unobstructed view of the machine
44
Disadvantages of Light Beams
Not suitable in all environments, dust could trigger false trips No physical barrier so no protection from ejections or non-mech hazards Do not protect anyone working inside the danger zone
45
Pressure sensitive mats
Machine shuts off when someone walks on the mat which has sensors built in. Can be prone to failure due to heavy use/footfall
46
Safe Maintenance Operations - PUWER
Reg 22 puts duty that maintenance can be carried out (SFARP) without risk to H&S
47
JSA
Job Safety Analysis - used to break a task down into component steps to identify hazards at each stage
48
MEEP
Materials, Equipment, Environment or People Analysis, prompts consideration of potentially unsafe acts or conditions
49
SSW
Safe System of Work - Formal procedure which results from a systematic examination of a task in order to identify all the hazards. It defines safe methods to ensure that hazards are eliminated or risk minimised
50
Control Systems
A system or device which responds to input signals and generates an output signal which causes the equipment to under control to operate in a particular manner
51
Safety Related Control Systems
Part of the control system of a machine that forms a safety function

NEBOSH Diploma (9 decks)

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