Permit to Work Major Hazard Standard - MIRMgate

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WMC EHS Management System Major Hazard Standard Permit to Work • The Permit Acceptor ensures the work team understands the extent of hazard controls in place and assumes control of work activities for the duration of work. The Work Permit hazard controls shall remain in place whilst work is in progress. • When the agreed work is complete the Permit Acceptor leaves the work site clean and safe and hands back the Work Permit to the Permit Issuer. • The Permit Issuer resumes control over the equipment / plant and progresses the removal of any temporary hazard controls established for the task before returning to normal operations. 5 TRAINING AND COMPETENCY Structured competency-based training shall be given to all users of the Permit to Work System. Competency shall be reassessed at a maximum interval of two years. Standardised training modules shall be established for the following: • Permit Issuer • Isolator (including Isolation Checker) • Permit Acceptor • Confined Space Entry • Confined Space Stand-by Person • Hot Work and Fire Safety (including Fire Watch) • Work Team Member. Permit Issuers and Isolators require detailed knowledge of the area in which they are issuing permits or carrying out isolations. Such knowledge shall be achieved as a prerequisite to gaining Permit to Work competencies. Competency records for all personnel shall be maintained on a site register and the extent of specific competency for individuals shall be clearly known to users of the Permit to Work System. 6 MONITORING AND AUDITS It is a requirement of the Permit to Work System that Permit Issuers, or a competent delegate, perform regular inspections of active Work Permits in the work site. The frequency and degree of detail included in this inspection should be based on the level of risk and complexity of the task being performed. The inspection shall include: • Review of the Work Permit documentation • Confirmation that the actual work being performed is consistent with the defined hazard controls in place. This does not require a detailed knowledge of the technical aspects of work being done. • Confirmation that the hazard controls defined in the Work Permit remain in place. Each site shall conduct regular (at least quarterly) compliance audits of the Permit to Work System. A person independent of the area in which Work Permits are issued shall carry out a compliance audit of the over-all functioning of the Permit to Work System at least annually. 7 WORK PERMIT PROCESS Effective work planning and risk assessment processes are essential to the smooth and safe execution of the Permit to Work System. 7.1 Scope of Work For any potentially hazardous work activity there shall be a clearly defined Scope of Work (SOW). This SOW shall: • Be defined by the Service Provider in consultation as appropriate with a Permit Issuer (or another equipment / plant owner representative) • Enable identification of all hazards WMC-EHS-MHS-007 DocsOpen Ref : 155520 Issued: 23/12/03 Page 6 of 59
WMC EHS Management System Major Hazard Standard Permit to Work • Be used to determine resource requirements (people, materials etc.) and estimated time to complete the task • Enable identification of which particular hazard control(s) is most appropriate (i.e. Work Permits / Certificates, Work Authorisation tags, Standard Work Procedures or THA). 7.2 Hazard Identification and Assessment Using the scope of work as a basis, the Service Provider shall make the initial identification of hazards associated with conducting the work and determine necessary controls. Assistance in developing this can be sought from the Permit Issuer or their representative. Tools used to identify necessary hazard controls will vary according to the risk exposure and range from application of TTTC to use of a THA and other risk assessments. Some hazard controls will be defined in a Standard Work Procedure and other work defined to be at the high-risk exposure level will require the increased level of rigour of a Work Permit and associated Certificates. The site criteria established for deciding when a Work Permit is required (see guidance in Table 1) shall be used to help in this process. Work that is determined to be low risk inspection of certain confined spaces or low risk hot work shall proceed with the use of Work Authorisation Tags as described in respective Appendices E1 and F1. Work that is determined as not requiring a Work Permit or a Work Authorisation Tag shall proceed with appropriate use of TTTC / THA / Standard Work Procedure controls and processes. • The Service Provider confirms that a THA(s) or Standard Work Procedure(s) is available for the defined scope of work • A final assessment of the number of Work Permits/Certificates required for the particular scope of work shall be conducted. Issues to be considered are: - The degree of confidence that the scope of work is complete - Whether multiple crews will work under a common Work Permit (see reference following) - If a Block Isolation is applicable (see section 7.5.2) - If Testing or jogging is applicable (see section 7.6.6). • Work Permits shall be specific to the scope of work. Generally they are raised for discrete tasks and do not span several different work crews or unrelated tasks. However, a Work Permit can be raised for multi-disciplined crews conducting different work on the same equipment in the same geographical area, in certain circumstances. For example crews working on a autoclave, a bank of flotation cells or a conveyor system with little potential impact on other work activities can be covered under one Work Permit. Separate THA’s or Standard Work Procedures would cover each of the different tasks. (Note that the Permit Acceptor shall accept this Work Permit on behalf of all separate work crews and must fulfil all of the normal accountabilities of the Acceptor). 7.3 Work Permit Document Preparation If a decision is taken that a Work Permit is required to authorise progress of defined work, the following shall occur: WMC-EHS-MHS-007 DocsOpen Ref : 155520 Issued: 23/12/03 Page 7 of 59
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Permit to Work Major Hazard Standard - MIRMgate

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