1.4 H&S Management systems - Planning Flashcards
1.4 List some examples of guidance for PTW?
HSG 48 Reducing error and influencing behaviour, 1989.
Paragraph 27 refers to conscious incompetence whereby an employee consciously refused to follow the permit-to-work system to help an operator. A breathing line was not assessed and an operator inhaled nitrogen instead of air.
HSG 51 Storage of flammable liquids in containers, 1998.
Paragraph 48 illustrates a permit-to-work system and summarises its expected contents.
HSG 65 Successful health and safety management, 1997 .
The section called ‘Devising Risk Control Systems RCSs’ under Inset 11, illustrates the permit to work system as an example of a management control loop, i.e. plan, do, check and act.
1.4 List the activities that require a PTW?
- entry into confined spaces;
- high voltage or live electrical work;
- hot work;
- working at height;
- maintenance of machinery / plant; and/or
- other circumstances (high risk) where normal risk controls may not be effective.
1.4 What content can be found in a PTW system?
- Required isolations must be identified, adequate and secure.
- Any residual hazards must be identified, controlled and understood.
- The work area must be specifically and correctly identified.
- Specific controls and checks must be identified.
- The permit must be specific to a task and changes of intent must be prevented. Additional work must be prohibited under an existing permit. A new or revised permit must be obtained.
- Instructions must be clear and understood.
- The permit system and relevant control measures must be monitored by local and senior management.
- Consideration should be given for multiple permit jobs.
- Any other precautions which may be necessary.
- Assess which type of permit is required.
1.4 What is an authorised person?
- Is specifically appointed or designated, in writing, to administer the permit system.
- Is competent for the purpose and aware of any specific requirements relevant to the task, including legislative requirements.
- Has comprehensive understanding of the task and work area.
- Has access to specialist advice or support personnel as necessary and is capable of understanding their advice.
- Has sufficient technical knowledge of the plant, processes or materials involved in the task.
- Has specific knowledge and understanding of the actual systems on which work is to be carried out.
1.4 Outline in detail the content in PTW systems?
Isolation
During maintenance work equipment should, as necessary and where possible, be isolated from all forms of danger. Typically isolations may be needed from:
• Energy sources – e.g. electrical, pneumatic, hydraulic, mechanical, etc.
• Mechanical movement or drive mechanisms.
Residual hazards
All residual hazards must be identified and, whenever possible, removed prior to any work starting (if entry to confined spaces is required, adequate procedures must be developed to ensure safety). This may involve:
• Draining down;
• Washing – water, acid, alkali, etc.;
• Neutralising;
• Cleaning – vacuuming, air blasting, abrasive blasting, etc.; and/or
• Purging – steam, inert gas, air, etc.
Identification of work area
The precise location of the work site must be identified on the permit; this may involve the use of plant / vessel numbers, machine / control panel numbers, labelling of equipment, site plans, etc. The identification of the actual equipment / area / vessel should be marked on it and be clear and unambiguous.
Specific controls or checks
Whatever specific controls are necessary for the safe completion of the work must be detailed in the permit. This should include any specific testing or checking necessary to confirm the effectiveness of a control measure, for example:
• Atmosphere testing – before entry and/or periodically during the work.
• Electrical checks to confirm isolation
Changes of intent
Changes of intent or work procedures have resulted in many accidents. Such changes are often instigated by the personnel carrying out the work or by local supervision. The permit must therefore clearly and precisely define the work to be carried out, and forbid unauthorised changes without modification to the permit and the implementation of whatever additional controls are necessary
Instructions
All instructions relevant to the issuing of a permit should be in writing and must be clear and fully understood by all concerned before the permit is issued
Monitoring
Adequate monitoring of the permit system is vital to ensure it is properly implemented. Such monitoring should check on:
• Permits are issued for defined and limited periods – a number of hours, a single shift, a 24-hour period, a number of days, etc.
• The permit is closed down and withdrawn at the end of the time period.
• Any continuations or extensions are properly authorised.
• Only the specified work is carried out with no modifications or additional work.
1.4 Define a competent person?
- Over 18 years of age.
- An acceptable standard of training.
- An acceptable standard of experience and skill relevant to the task.
- Can readily identify the hazards and risks presented by the task.
- Can assess the hazards and risks in the context in which they are found.
- Can apply suitable remedial measures.
- The right personality; responsibility and attitude.
- Trained on the requirements for the permit and how it is to be administered and implemented.
- The authority to properly apply the requirements of the permit.
1.4 Name some features of PTW?
- They provide specific instructions for the preparation of the task and the work location, including all of the relevant safety procedures. This greatly reduces the likelihood that no safety controls or procedures are omitted in error.
- They contain details of remaining hazards known to be presented by the task or plant and the relevant risk controls necessary.
- They contain procedures for the safe reinstatement of re-commissioning of the plant, equipment or work area. They also record the state of the task at the closing of the permit.
1.4 What is a permit to work?
A permit-to-work is not of itself a safe system of work; it is a document that describes the necessary requirements for safety controls for a specific task. It must specifically define all of the safety requirements for the task and provide a traceable record and confirmation that the relevant safety precautions have, in fact, been implemented
1.4 Name some control measures for lone workers?
Redesign of the task to eliminate the need for lone working. This can be done, for example, by changing shift patterns to implement a buddy system where two people work together at all times.
Provision of information, instruction and training. This might include training in the safe use of work equipment, or how to handle aggressive behaviour when dealing with the public.
Establishment of communication and supervision procedures. To ensure that a manager is able to contact the worker at regular intervals; to make sure that arrangements in the case of an emergency have been put in place; and to check that a lone worker has arrived back safely once work has been completed.
Provision of mobile first aid facilities. To ensure that lone workers can deal with minor injuries themselves.
Health surveillance of lone workers. At regular intervals, to ensure that workers are fit and healthy to carry out the tasks required of them.
1.4 What is important to consider when dealing with lone workers?
Access to and egress from the place of work. Can the lone worker get to and from the workplace safely? Is the work being carried out in a confined space?
Nature of the work. What sort of work is being undertaken? Are lone workers dealing with the public, where they might face aggressive or violent behaviour?
Location of work. Where does the work take place?
Time of work. When does the work take place? We are all naturally tired first thing in the morning and last thing at night
Use of work equipment. What, if any, work equipment do they need to use? Use of electrical equipment or machinery will increase the risk.
People. Who are the people who are working alone? You will need to consider their age, maturity, experience, health and fitness, and general state of mind
1.4 Define lone working?
Lone workers are those who work by themselves without close or direct supervision. Risk assessment is, therefore, essential
1.4 What emergency arrangements need to be considered when working in confined spaces?
Emergency arrangements may need to consider:
• Rescue and resuscitation equipment.
• Special arrangements with local hospitals (foreseeable poisoning).
• Raising the alarm.
• Safeguarding rescuers and third parties.
• Fire fighting.
• Control of plant.
1.4 What controls need to be in place for work in confined spaces?
Technical – since there is a chance of substances entering the confined space when someone is working in it, it has to be possible to lock valves off or seal openings and to keep access and emergency egress routes open. Ventilation will also be needed to remove hazardous fumes and to replenish fresh air as well as provision of adequate lighting.
Procedural – procedures need to identify who is inside the confined space, how long they have been in there, whether emergency equipment is ready and available and the right people there to use it. Checks on atmosphere before entry, and whilst work is going on.
Behavioural – compliance with procedures, e.g. the proper use of PPE such as breathing apparatus, safety helmets and harnesses / lifelines, etc.
1.4 What is a specified risk?
A specified risk is the risk of:
• serious injury arising from a fire or explosion;
• loss of consciousness arising from an increase in body temperature;
• loss of consciousness or asphyxiation arising from gas, fumes, vapour or the lack of oxygen;
• drowning from an increase in the level of a liquid; and/or
• asphyxiation arising from a free flowing solid or the inability to reach a respirable environment due to entrapment by a free
flowing solid.
1.4 What is Job Safety Analysis?
A job safety analysis (JSA) is a procedure that helps integrate accepted safety and health principles and practices into a particular task or job operation. In a JSA, each basic step of the job is to identify potential hazards and to recommend the safest way to do the job. Other terms used to describe this procedure are job hazard analysis (JHA) and job hazard breakdown.
One of the methods used in this example is to observe a worker actually perform the job. The major advantages of this method include that it does not rely on individual memory and that the process prompts recognition of hazards. For infrequently performed or new jobs, observation may not be practical.
One of the methods used in this example is to observe a worker actually perform the job. The major advantages of this method include that it does not rely on individual memory and that the process prompts recognition of hazards. For infrequently performed or new jobs, observation may not be practical.
Four basic stages in conducting a JSA are:
- Selecting the job to be analysed.
- Breaking the job down into a sequence of steps.
- Identifying potential hazards.
- Determining preventive measures to overcome these hazards.