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Job Safety Analysis and Permit to work system

  • 1.  Job Safety Analysis and Permit to work system

    Posted 10-21-2019 04:32
    Does anyone clarify when the Job Safety Analysis and Permit to work system is used in practices?

    Himanshu Patoliya
    Graduate Engineer Trainee
    Adani Group


  • 2.  RE: Job Safety Analysis and Permit to work system

    Posted 11-06-2019 06:03
    Himanshu,  JSA is used prior to conducting any routine work. The other appropriate word is Task Risk Assessment. For example if you are preparing Tea, just breakdown the task or jobs or steps involved in the preparation of Tea.

    Permit to work is sort of legal document to grant work authorization. PTW is braodely classified as cold work and hot work. PTW is a detail document consisting of type of work, who is authorizing, who is performing the work, barriers or precautions put in place. It is applicable for all the routine and non-routine activities.

    Please feel to raise any more specific questions if you have and I will try my best to answer. Thank you and safe life ahead.

    Sachin Mahajan ING
    Senior Analyst Production Planning
    ADNOC Onshore
    Chorniche, Abu Dhabi

  • 3.  RE: Job Safety Analysis and Permit to work system

    Posted 11-07-2019 10:41
    Edited by Steve Cutchen 11-07-2019 10:42
    I would add another component of a good Job Safety Analysis:
    PREDETERMINE the triggers for Stop Work.
    "If [this thing happens] then we declare Stop Work Authority on this job and respond by [these actions]."

    Stop Work Authority is difficult to apply to a Process Safety Emergency when needed:
    • The situation is uncertain.
    • Courageous employee action is required.
    • The decision is embedded in the chaos of the event.
    It is a "residual reduction" technique, falling below "procedural safeguards" on the hierarchy of controls.
    But Stop Work is also vitally important. It may be the last thing that acts as a barrier to an incident.
    By identifying as many Stop Work criteria as we can ahead of time (while identifying potential hazards in a JSA) we can move Stop Work closer to a procedural safeguard, remove many of the shortcomings, and have a much more effective safety program.

    Steve Cutchen
    US Chemical Safety Board
    Houston TX

  • 4.  RE: Job Safety Analysis and Permit to work system

    Posted 11-08-2019 06:26

    In theory PTW is designed for non routine works which may pose unacceptable or certain level of risk, but in practice most and sometimes all of activities takes place under PTW,

    JSA, JHA job hazard analysis, TRA task risk assessment more or less are supporting PTW, again most of PTW systems include a simple RA as a part of permit papers, but for certain jobs reference to company risk management procedure and utilizing risk matrix, they require a more detail study of risk which could be JSA, or TRA. Some companies divided the risk assessment to levels level 1( as per permit forms), Level 2 ( JSA or TRA, which is in house and by the own team) and level for complicated tasks ( which need additional resources and expertise i.e, tandem lift, QRA...
    Here is a good definition of PTW:
    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 an operators and those who carry out the hazardous work.

    Ali Mehrpour

    Ali Mehrpour BS
    HSE Superintendent
    Oman Oil Company Exploration & Production