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Management of change

QuestionAnswer
MOC management of change A formal process to evaluate and control modifications to equipment, processes or procedures.
COMAH 2015 UK regs 2015 for high risk sites to prevent disasters like chemical leaks or explosions
HAZOPS hazard and operability study- A structured method to ID risks in processes by asking what if questions
LOPA Layers of Protection Analysis- A risk assessment tool that checks if safety barriers e.g alarms and valves are strong enough
P&ID Piping and instrumental diagram- A detailed drawing showing how equipment and safety systems connect in a plant
Competent person Someone with the right skills/knowledge to approve change (defined by UK law)
what is effective management of change A structured approach to safely evaluate, approve and implement modifications to equipment, processes or procedures
why have an MOC system? required by UK law COMAH 2015 and HSG254 guidelines mandate a formal system for managing modifications in high risk industries
Risk assessment methods techniques like HAZOPS are used to systematically evaluate potential risks before changes are approved.
why it matters poor change control was key factor in Buncefield 2005 explosion where unassessed modifications led to catastrophy
hazard and risk analysis legal requirement under HASAWA 1974 and COMAH 2015 employers must assess risks before making changes
methods used HAZOP studies LOPA and other tools to help predict unintended comsequences
Authorisation by competent persons Two tier approval- technical experts review for feasibility, while senior managers must sign off high risk changes. safety critical equipment
legal basis management of health and safety at work regulations 1999 defines competent persons who must oversee modifications
legal duty COMAH 2015 schedule 4 requires detailed documentation including P&ID and operating mamuals
legal requirement on consultation HASWA 1974 section 2 requires consultation with employees on safety matters
methods of consultation can be: toolbox talks, safety briefings, and training updates
legal duty when changes take place and training under HASAWA employers must provide adequate training when changes affect safety. reducing human error
Created by: krav
 

 



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