Permit to Work Major Hazard Standard - MIRMgate

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WMC EHS Management System Major Hazard Standard Permit to Work The evaluation of the space will also determine if the space meets all of the requirements to allow for an inspection only to be completed under a low risk Work Authorisation Tag. These potential confined spaces can be in existence or be created by new construction or modifications to existing structures, equipment etc. The evaluation assesses the risk of the inherent hazards of the space itself. To assess if the space can be managed under a low risk inspection process the evaluation shall establish that the space will not have any potential unsafe atmosphere at all times during the inspection. The confined space evaluation shall be referred to when performing or reviewing a Standard Work Procedure/THA for any task to be performed within that space. In all cases the need for entry to the confined space shall be evaluated as a first consideration with the work conducted from outside the space if practicable. 4.1 Identification The site shall identify and assign a unique identification to each confined space. 4.2 Register The site shall maintain a register and a record of the evaluation for all identified confined spaces. The register as a minimum shall contain: • The unique identification number • Separate identification of all designated low risk inspection only confined spaces • The confined space location • A description of the space and its inherent foreseeable hazards The register and evaluation of the space shall be reviewed and updated by competent persons at appropriate intervals but in any case not exceeding two years. 4.3 Signage Each entry point to a confined space shall have a sign of appropriate material and size stating “Danger Confined Space - Entry by Permit Only”. The sign should be mounted as close as is practicable to the entry point. Where it is impracticable to place and maintain signs on every entry, alternate warning systems shall be implemented to prevent unauthorised entry into any confined space. The placement and condition of signs shall be included on regular inspection checklists. 5. Requirements To Inspect a Low Risk Confined Space All inspections conducted for a low risk confined space shall be in compliance with the following details: • The identification and evaluation of the inherent hazards of the space stored on the site database must be retrieved and reviewed before completion of a Confined Space Work Authorisation Tag • A SWP for the inspection, or a new THA for the inspection to be performed must be reviewed or completed detailing all precautions and controls required to maintain safe inspection • The confined space ID number, SWP or THA number, entrants name and Authorising Persons signature be recorded on the confined space entry Work Authorisation Tag WMC-EHS-MHS-007 DocsOpen Ref : 155520 Issued: 23/12/03 Page 30 of 59
WMC EHS Management System Major Hazard Standard Permit to Work • The completed lower tear off portion of the tag (Confined Space inspection in progress section) must be left with the supervisor controlling work within that area • All control measures and precautions detailed on the SWP or THA shall be established and confirmed before commencement of the inspection (checklist on the tag completed) • Persons performing the inspection shall sign the SWP or THA confirming they understand and will comply with the hazards control requirements for the task • Isolations must be in compliance with level 1 requirement • Once the task is finished, the completion of work sections of the tag shall be signed off and both portions kept and filed as part of the Permit to Work documentation. 6. Requirements to Work in a Confined Space 6.1 General All work conducted in or on confined spaces shall be in compliance with the Permit to Work Standard defined in this document. A specific Confined Space Entry Certificate (see Appendix E2) shall be completed and attached to the relevant Work Permit. No person shall enter a confined space unless: • They have been trained, and assessed as competent to do so • They have signed on to the Work Permit confirming they have read and understood the requirements of the current THA, Work Permit and Confined Space Entry Certificate for the work to be performed • They sign on and off the Entry/Exit log each time they enter and exit the confined space • It has been determined that there is either a safe atmosphere inside the space or that adequate protective measures are implemented to ensure their safety • There is a system to ensure that where there is more than one entry to the confined space, the other entry points are sign posted and barricaded in a way that shall prevent involuntary entry but will allow emergency egress. A Work Permit and a Confined Space Entry Certificate is required to enter a confined space and shall include provision for the recording of: • The risk assessment for the task to be performed within/on the space (i.e. THA as a minimum) has been completed and is available • Evidence that isolation of contaminants and energy sources has been completed by an authorised person and in accordance with the requirements of the Permit to Work Standard • The location of the job • The description of work (scope of work) • Atmospheric testing requirements and results if applicable • An emergency rescue plan • Any special instructions that may be required • The authority to enter signed by an authorised person (Permit Issuer) • Acceptance of the permit signed by the Permit Acceptor • Nominated Stand-by Person(s) • Provision for signing in and out of persons who may enter and exit the confined space WMC-EHS-MHS-007 DocsOpen Ref : 155520 Issued: 23/12/03 Page 31 of 59
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Permit to Work Major Hazard Standard - MIRMgate

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