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NEBOSH Unit IA > Unit A4 > Flashcards

Unit A4 Flashcards

1
Q

List 5 sources of external data

A 
HSE
OHSA
ILO
WHO
The Internet
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2
Q

List the three types of safety inspections

A
  • safety checklist inspection
  • general knowledge inspections
  • risk mapping
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3
Q

What is the disadvantage of a safety checklist inspection

A

They may not identify previously unidentified hazards

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4
Q

List the three types of checklist inspections

A
  • list of things checklist
  • systematic list of procedures to be followed
  • events which are fixed in time
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5
Q

What is a general knowledge type inspection

A

Another way of conducting inspections is to use the information you have in your head and just walk around looking at what is going on

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6
Q

What is a risk mapping type inspection

A

This technique uses a map/drawing of the workplace (like a floor plan) or a list of steps in a process. People in the group then tell the leader the hazards they recognise and where they are located in the workplace or process

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7
Q

What Should you Include in your Inspections?

A 
Equipment 
Chemicals 
Processes
Workplace environment 
Employee training 
Emergency plans 
PPE
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8
Q

List the three types of main risks

A
  • directly perceived risks
  • virtual risks
  • risks perceived through science
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9
Q

What are the two types of risk assessments

A
  • quantitative

- qualitative

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10
Q

Explain a quantitative risk assessment

A

provide a numerical estimation of risk based on mathematical modelling

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11
Q

Risk management involves

A 
Risk identification 
Risk evaluation 
Risk estimation 
Monitoring 
Audit and review
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12
Q

List the 8 hazards effect groups

A 
Immediate physical danger 
Long term physical danger 
Immediate chemical danger 
Long term chemical danger 
Immediate biological danger 
Long term biological danger 
Immediate psychological danger 
Long term psychological danger
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13
Q

Define acceptability of risk

A

Is a risk which although not negligible is presumed not to require any more controls

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14
Q

Define a tolerable risk

A

Is a known risk deliberately run on a regular basis that isn’t negligible and cannot be ignored but which should be kept under review and reduced if and when possible

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15
Q

List the two types of risk retention

A

With knowledge

Without knowledge

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16
Q

Explain risk Renton with knowledge

A

If you have a correct assessment of both probability and severity of the loss then funds can be set aside for this purpose

17
Q

Explains risk retention without knowledge

A

If you fail to consider a particular risk then we can be retaining without knowledge

18
Q

Explain what is risk Prioritization

A

Target resources to deal with those hazards that pose the greatest threat first

19
Q

Explain what is Probability

A

The the chance that a given event will take place

20
Q

Define Frequency

A

Usually can be regarded as identical to probability or the time interval between expected loss making events

21
Q

Define Severity

A

Extent of potential loss

22
Q

What is Relativistic method of risk rating

A

Looking at things in relative terms only. Particularly useful where risks cannot be quantified with any degree of certainty. Risks can be rated by comparison of one industry to another

23
Q

What is a Probabilistic method of risk rating

A

Is where the risk is calculated

24
Q

What is a job safety analysis JSA

A

Job safety analysis (JSA) is the systematic examination of a job intended to identify hazards, assess the level of risk, and evaluate practical measures to control the risk

25
Q

List the 5 steps a JSA involves

A

Select the job to be analyzed
Identify the potential hazards
Breaking the job down into a sequence of tasks
Determining preventive measures to control these hazards
Communicating the information to others

26
Q

What should you Consider when selecting the job to be analysed

A

Accident, injury and illness statistics: jobs where accidents occur
Absenteeism
Signs and symptoms of harmful exposures
Modified jobs
Infrequently performed jobs
Jobs with frequent work interruptions due to technical difficulties
Jobs with excessive waste generation and production losses
Jobs where employees are required to work alone in isolated workplaces
Jobs with the potential for violence in the workplace

27
Q

commonly-used techniques for identifying potential hazards in a JSA are

A

Kepner and Tregoe method based on change analysis

Gibson and Haddon approach based on unwanted energy flow and energy barrier

28
Q

What are the steps in the Kepner and Tregoe method based on change analysis

A

For a specific task, identify the task or process parameters to be investigated for changes (normally one parameter).

Apply the guide words to this parameter in order to qualify or quantify the changes

Identify and assess the consequences of the changes in terms of risk

29
Q

Task parameters are easy to find. Look at the task and find parameters to be controlled in order for the task to be performed normally

Such parameters can be:

A

A sensory signal: e.g. colour, shape of object

A process specification: e.g. pressure, temperature, concentration, flow rate

A dynamic component: e.g. motion, sequence, pace, speed change, friction

A geometric value and time: e.g. location, dimensions, rate

A force or mass: e.g. electrical power, chemical energy, torque, impulse, impact

A piece of equipment: e.g. protective devices, position of a part, part in motion

30
Q

Explain the Gibson and Haddon approach based on unwanted energy flow and energy barrier

The procedure for the energy-barrier approach is to look at each task and:

A

Identify the energy sources producing a risk

Describe the way the energy can come in contact with employee(s) (i.e. the energy flow

Find adequate barriers to eliminate or reduce the chances of this contact (i.e. controlling the
energy flow

31
Q

Hazard control strategies

The following are common hazard control strategies, in order of preference:

A

1) Eliminate the hazard
2) Substitute the hazard with less hazardous or non-hazardous options
3) Minimise the risk due to the hazard
4) Reduce the exposure
5) Isolate the hazard
6) Provide personal protective equipment and clothing
7) Implement administrative controls
8) Have an emergency plan in place
9) Adopt measures to reduce damage following an accident or emergency

32
Q

List examples to Eliminate the hazard

A
  • Choose a different process
  • Modify an existing process by changing the energy type
  • Modify or change equipment or tools
  • Lock out energy sources
33
Q

List 5 internal sources of information

A 
SDS
magazines / journals 
User manuals 
Direct observation 
Interviews and discussions 
I'll health data / injury data

NEBOSH Unit IA (7 decks)

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