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A 'permit to work' is a more formal system stating exactly what work is to be done and when, and which parts are safe. A responsible person should assess the work and check safety at each stage....
- Permit to Work Systems
The system should contain any fire precautions necessary....
- Hsg253
Extensive guidance for the on/offshore oil or gas industry,...
- Permit to Work Systems
- Price £8.95
- Introduction
- How to use this document
- What is a permit-to-work system?
- Case study 1
- Case study 4
- Case study 5
- Case study 7
- Case study 9
- Display
- Case study 10
- Suspension
- Handover
- Hand-back
- Permit authorisation and supervision
- Case study 13
- Site or installation managers (acting as originator, permit authoriser or area authority)
- Contractors’ and subcontractors’ management (acting as performing authority or permit user)
- Responsible authority (acting as permit authoriser, issuing authority or area authority)
- Supervisory personnel (acting as performing authority or permit user)
- Individuals (acting as permit user, site checker or isolating authority)
- Electronic permits
- Appendix 1 Relevant legal requirements
- Appendix 2 Further information on different permit types
- Hot work permit
- Cold work permit
- Equipment disjointing certificate/breaking containment permit
- Confined spaces entry certificate
- Isolation certificate
- Excavation certificate/heavy equipment movement certificate
- Appendix 3 Checklist for the assessment of permit-to-work systems
- Appendix 4 Permit-to-work monitoring checklist
This book describes good practice in the use of permit-to-work systems, and will help operators using these systems to ensure risks have been reduced to a level as low as reasonably practicable. It will be particularly useful to the onshore and offshore petroleum industry, onshore chemical and allied industries and other industries. The potential f...
The petroleum, chemical and allied industries store and process large quantities of hazardous substances including flammable and toxic materials, so the potential for serious incidents is clear. To prevent such incidents it is vital that there should be effective management of hazards, including the use of safe systems of work. A permit-to-work sys...
6 This guidance is intended to provide a basic understanding of what is meant by a permit-to-work system. The advice is of a general nature, and is not intended to be exhaustive. It is essential that it is read in conjunction with the specific instructions and guidance produced by individual companies. In addition, the Task Risk Assessment2 and oth...
9 A permit-to-work system is a formal recorded process used to control work which is identified as potentially hazardous. It is also a means of communication between site/installation management, plant supervisors and operators and those who carry out the hazardous work. Essential features of permit-to-work systems are: clear identification of who ...
Contractors were engaged to demolish redundant oil storage tanks in a tank farm on an oil blending and storage site. A pump house was still in operation in the vicinity of the redundant tanks and the occupier was aware of the fire risk. method of work was agreed with the contractors which involved cold cutting those parts of the tanks nearest to th...
In the permit-to-work system in place at the time of the Piper Alpha disaster, there was no cross-referencing when the work carried out under one permit affected the work under another. Reliance was placed on the memory of the designated authority.
A fitter was scalded by an escape of high-pressure steam from an open pipe. Two fitters were carrying out work on the pipes under a permit-to-work. The first fitter thought the job was complete and returned the permit to the process operator who opened the steam valve. The second fitter had not completed his part and was still working on the open p...
An explosion occurred in a tank containing aqueous waste contaminated with hydrocarbon solvent. Welding work was being carried out on pipe work supports carrying pipes which led to the top of the tank. The welding ignited fumes in the pipes and the flame spread along the pipes into the tank. Because the work was not being done on pipes containing f...
A cleaner entered a PVC autoclave to check on the need for cleaning and was overcome by vinyl chloride fumes. The vessel was entered on average twice a week, and although a permit-to-work system had been in place, it had fallen into disuse.
18 Copies of a permit-to-work should be clearly displayed: at the work site, or in a recognised location near to the work site. (If this is not practicable, eg when a job is carried out in a number of locations, then the permit should be kept on the performing authority); and in the central or main control or permit co-ordination room, with additio...
During the Piper Alpha inquiry it was found that contrary to the written procedure, the performing authority’s copy of the permit was frequently not displayed at the job site, and was commonly kept in the performing authority’s pocket. Lord Cullen made a specific recommendation on this point: ‘Copies of all issued permits should be displayed at a c...
19 Work may sometimes have to be suspended, for example: if there is a general alarm; for operational reasons, eg when the permit is for hot work and process fluid or gas sampling must be carried out at the same time, with the possibility of a release of a dangerous substance; while waiting for spares; there is a change to the nature or scope of th...
23 If work is carried over to another shift, eg the job takes longer then expected, then a shift handover procedure should be in place. This handover procedure should ensure that the incoming shift is aware of any outstanding permit-controlled jobs, the status of those jobs, and the status of the plant. Work-in-progress should be left in a conditio...
24 The hand-back procedure should include obtaining answers to the following questions: Has the work been completed? This should be confirmed by the performing authority, ie the person to whom the permit was issued. Has the plant or equipment been returned to a safe condition, in particular by removing isolations? Has this been verified by the pers...
25 A permit-to-work system will be fully effective only if the permits are co-ordinated and controlled by an issuing or other responsible authority (see paragraph 29), and there is adequate supervision and monitoring of the system to make sure that the specified procedures are being followed. This should include site visits by the issuing authority...
For a permit-to-work system to function properly it must be managed so that personnel within the system are competent and that responsibility is taken for its management. This case study shows how management failings can lead to serious incidents even where a permit has been issued. Clearly understood responsibilities and adequate training (describ...
34 As part of their duties, assigned by the site occupier for onshore installations and by the duty holder for offshore installations, the site or offshore installation manager (OIM) should ensure that the above arrangements (paragraph 33) are in place. In addition, the site manager/OIM will take on the following roles or ensure there are arrangeme...
36 The management of contracting companies should: ensure that they understand the principles of permit-to-work systems as they are applied in the industry; ensure that they understand the permit-to-work systems and other arrangements that apply to the particular locations at which they or their employees are to work; ensure that all performing aut...
37 The responsible person may also be (among other things) the issuing authority responsible for issuing the permit to the performing authority. For some sites, they may not be the area authority, and should therefore liaise closely with other supervisors or people working in the area. The area authority should know what is being done, especially a...
39 Supervisory staff, whether employed by the employer, duty holder or contractors, should ensure that: they and the people working with them understand the operation of (and the consequences of non-compliance with) the permit-to-work systems applicable to the areas in which they are responsible for work; any necessary information, instruction or t...
40 All individuals working at the site or installation should ensure that: they are able to demonstrate a good understanding of the permit-to-work systems that are operated in any location at which they may have to work; they do not start work on any job requiring a permit until one has been authorised and issued, its content understood and necessa...
51 Permits can be produced electronically and a number of companies are using this type of system. There may be advantages in reducing the amount of paperwork associated with the permit process. However, before introducing an electronic permit system operators must be sure that: a suitable system (eg password-protected electronic signatures) is in ...
Legal requirements relevant to permits-to-work are set out in the following legislation:
1 It is important to realise that similar terminology may be used at different sites for types of permits which are fundamentally different. Some of the permits listed here may be called certificates. Clarity is essential to prevent confusion of permits-to-work with other kinds of document. It should be noted that in some permit-to-work systems, on...
2 Hot work is usually taken to apply to an operation that could include the application of heat or ignition sources to tanks, vessels, pipelines etc which may contain or have contained flammable vapour, or in areas where flammable atmospheres may be present. Hot work permits, typically coloured red or red-edged, are more generally applied to any ty...
3 Cold work permits, typically blue-edged or coloured blue, are frequently used to cover a variety of potentially hazardous activities which are not of a type covered by a hot work permit. The activities for which a cold work permit may be appropriate will vary from site to site but should be clearly defined.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
If any unsafe conditions are found, the work must be stopped and the issuing authority and the performing authority notified immediately.
Feb 12, 2023 · In a PTW system, a permit is issued by a designated authority, such as a supervisor or safety manager, to authorize specific work activities. The permit outlines the nature of the work, the potential hazards involved, and the measures that will be taken to control these hazards.
- Abdullah Malik
Apr 4, 2023 · A Permit to Work (PTW) system is a formalized system of controls used to manage high-risk activities in the workplace. These activities could include maintenance, construction, repair work, and other activities that pose a high risk of injury or harm to workers.
- Raja Usman
PTW is a control system that is used to assess and manage the hazards associated mostly with high risk work, such as work at height, hot work, electrical work or confined spaces as well as non-routine work.
Oct 12, 2023 · Permit to Work (PTW) systems are specialized safety protocols designed for various hazardous work environments. These systems categorize tasks based on their associated risks and provide specific guidelines to ensure worker safety.
People also ask
What is PTW & how does it work?
What are the different types of PTW systems?
What is an electronic PTW system?
What is a PTW permit?
What is a comprehensive PTW system?
What work requires a PTW?
May 23, 2023 · In simple terms, a PTW system is a formalised procedure that authorises and controls potentially hazardous work activities. It involves obtaining permission, assessing risks, and implementing necessary precautions before carrying out specific tasks. It acts as a safety net, providing a structured framework to mitigate risks and protect workers.
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