JHA System - Sonic Drilling Ltd.

Likelihood
Job Hazard Analysis – Assessment and Control System
Insignificant
Injuries or ailments not
requiring medical
treatment.
Minor
Medical help needed.
Treatment by medical
professional
Severity / Consequence
Moderate
Significant Serious injury
Non-permanent injury.
Major
Life threatening injury or
multiple serious injuries
causing hospitalization
Catastrophic
Death or multiple life
threatening injuries.
1 2 3 4 5
Almost certain to occur in most
5 circumstances 6 7 8 9 10
4 Likely to occur frequently 5 6 7 8 9
Possible and likely to occur at
3 some time 4 5 6 7 8
Unlikely to occur but could
2 happen 3 4 5 6 7
May occur but only in rare and
1 exceptional circumstances 2 3 4 5 6
How to Prioritise the Risk Rating
Once the level of risk has been determined the following table may be of use in determining when to act to institute the control measures.
Extreme (E)
(>7 = Extreme Risk)
High (H)
(6-7 = High risk)
Medium (M)
(5 = Med. risk)
Low (L)
(

Job Hazard Analysis – Assessment and Control System Cont…
Hierarchy of Control
Elimination
Substitution
Engineering Controls
Administrative Controls
Personal Protective
Equipment
Controls identified may be a mixture of the hierarchy in order to provide minimum operator exposure.
Eliminate the hazard.
Provide an alternative that is capable of performing the same task and is safer to use.
Provide or construct a physical barrier or guard.
Develop policies, procedures practices and guidelines, in consultation with employees, to mitigate the risk. Provide training, instruction and supervision about the hazard.
Personal equipment designed to protect the individual from the hazard.
Take action on the assessment. Depending on the assigned Risk Level/Code (or Risk priority), take the corresponding action
according to the table above:
If Risk priority is LOW for a task step requires monitoring.
If Risk priority is MEDIUM select and implement appropriate controls.
If Risk priority is HIGH Act immediately to mitigate the risk. Eliminate, substitute or implement measures.
If Risk priority is EXTREMELY HIGH immediately stop the task step until appropriate controls can be implemented.
Select Action:
A high risk priority means that there is a reasonable to high probability that an employee will be killed or permanently
disabled doing this task step and/or a high probability that the employee will suffer severe illness or injury!
Try to reduce employee exposure to the hazard by first implementing engineering, work practice, and/or administrative
controls. Note the control method to be implemented in the far right column.
Certify the hazard assessment:
Certify on the hazard assessment form that you have done the hazard assessment and implemented the needed controls.
Incorporate any new requirements that you have developed into your written accident prevention program.

Job Hazard Analysis Form
Job/Task: ______________________________
Location: ______________________________
Job/Task Step Hazard Type Severity Probability Risk Code Control Method 1
(1) Note: Engineering, work practice, and/or administrative hazard controls such as guarding must be used, if feasible, before requiring employees to use personal protective equipment.
Certification of Assessment
*Name of work place: ________________________________ *Address _________________________________________________________
*Assessment Conducted By: _________________________ Title: ________________________ *Date(s) of Assessment ________________
Implementation of Controls Approved By: __________________________ Title: ______________________________ Date: ________________
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