Permit to work Certification-Refresher_Part4.pdf

Classification: Tasnee - General Information ❑ The blind handle shall extend out several (3 inches) beyond the outside diameter of the flanges and serves as an indicator that a blind is in place to install the blind tag number. ❑ Blind shall be seen from ground level if it is on pipe rack or high el...

Classification: Tasnee - General Information ❑ The blind handle shall extend out several (3 inches) beyond the outside diameter of the flanges and serves as an indicator that a blind is in place to install the blind tag number. ❑ Blind shall be seen from ground level if it is on pipe rack or high elevation. ❑ For single activity yellow strip shall be tie to blind location to be visible from any distance and red strip for more than one activity. ❑ Orifice flanges may be used for blinding, but the following actions shall be taken to ensure orifice plates are not mistaken for blinds: ❑ Highlight on the blind list the fact that a blind has been installed in an orifice flange. ❑ The orifice plate should be hung on the flange from which it is removed, or nearby to verify its removal. ❑ Blind tag number shall be reflected in Master blind list ❑ Maintenance review shall be obtained for correct size, gasket type, pressure class and bolts before installation. ❑ Maintenance and Operation shall verify the blind(s) are installed as per the Master blind list 64 and then signs. Classification: Tasnee - General Information ❑ Whenever positive isolation is not possible for individual vessels or pieces of equipment, ❑ A line may be blinded at some distance from the vessel OR ❑ several pieces of equipment may be isolated as a single unit OR ❑ System blinding ensuring that all of the equipment in the system is made gas free and kept that way OR ❑ All hydrocarbons, chemical and other process and utilities lines entering or leaving the Unit must be positively isolated at the Unit Battery Limits for shutdown or turnaround work. ❑ Whenever positive isolation is not possible at all, a detailed risk assessment shall be conducted and approved by risk authority approval. ❑ In case entering an underground confined space such as pits, trenches, or manholes to which pipelines are connected or passing through and which cannot be blinded, disconnected, or completely isolated, a detailed JSA shall be conducted to ensure safe performance of the required work. ❑ It shall be prepared and approved by the concerned department issuing the permit. ❑ It shall be ensured that there is no leakage from any of the lines passing through the confined space that is to be entered. ❑ in case of leakage the line(s) shall be positively isolated. 65 Classification: Tasnee - General Information Confined Spaces outlines: ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Confined space categories. Confined Space Entry Package and preparation Confined space hazard identification: confined Space Entry preparation Ventilation Requirements and gas testing for Confined Space. Rescue plan Preparation and requirements for confined Space Entry. Safe Access and Exists for confined Space. Condition Changes during confined Space Entry Permit. Work inside confined Space. Factors Contributing to Confined Space injuries: ❑ Failure to recognize confined spaces ❑ Underestimating the danger ❑ Unspecialized people attempt to rescue their colleagues. 73 73 Classification: Tasnee - General Information ❑ Confined space categories. ❑ “A” Category Confined Space Authorization: Confined space where it is possible for hazardous substances to be present and permanent breathing apparatus shall be worn during the execution of the task. ❑ “B” Category Confined Space Entry Authorization: Confined space where there are no hazardous substances or where the environment can and has been made safe and can be kept safe during execution of the task. ❑ Confined Space Entry Package and preparation: ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ JSA. Ventilation plan. Master blind list & marked up P&IDs Master tag list & marked up P&IDs Energy isolation form. Lifting plan. Excavation request certificate. Fire interruption / isolation form Rescue plan 74 74 Classification: Tasnee - General Information ❑ Confined space hazard identification: shall be recognized by posting sign boards stating the confined space condition as follows: ❑ “Oxygen Deficient atmosphere”. ❑ “DANGER CONFINED SPACE – ENTER BY PERMIT ONLY”. ❑ DANGER Nitrogen / Inert Gas Purge in Progress”. 75 75 Classification: Tasnee - General Information ❑ Confined Space Entry preparation ❑ Free of dangerous chemical substances / liquid As far as practically possible for “A” category and mandatory for “B” category ❑ Energy isolation in terms of: ❑ Electrical Isolation for energy sources of all driven equipment as well as Lockout/Tagout process. ❑ Positive Isolation by installing rated blind / disconnecting line. ❑ Process or utility lines entering or leaving the equipment / unit must be positively isolated at the nearest location to working asset ❑ Radiation sources removed / isolated. ❑ No process material remains. ❑ Sewer openings in immediate area shall be covered. ❑ Air shall be tested, and Ventilation shall be provided. ❑ Communication systems shall be available. 76 76 Classification: Tasnee - General Information ❑ Ventilation Requirements and gas testing for Confined Space. ❑ Oxygen content between 19.5% to 22.0%. ❑ Flammable gases and vapors (LEL) below 5%. ❑ Potential toxic air contaminants in terms of CO and NH3 maximum allowable concentration is 25 PPM. ❑ Wet bulb globe temperature ≤ 35°C or Ambient Temp ≤ 46 °C as maximum. ❑ Atmospheric temperature according to the Weather Condition Health & Safety Advisory reported by TASNEE clinic. ❑ Depending on the situation, type of ventilation shall be selected ( natural draft, use of fans, or air movers or air conditioning systems ) ❑ Pure Oxygen shall not be used to ventilate confined spaces. ❑ Plant air shall not be used to ventilate unless it is used for pull out ventilation. ❑ Air movers shall be listed for the area electrical classification and grounded to prevent the accumulation and discharge of static electricity. Please note that : All confined spaces must be considered “A” category until tested and verified as a “B” category. 77 77 Classification: Tasnee - General Information ❑ Ventilation Requirements for Confined Space. ❑ For horizontal exchanger which are opened from both ends during the confined space entry, ventilation plan is not required. ❑ Do Not use Nitrogen to ventilate confined spaces, as this could lead to oxygen enrichment/deficiency of the space. ❑ Only pneumatic driven blower, fans and air movers are allowed to ventilate the confined spaces. ❑ Fans and air movers shall be ensured that it is electrically bonded and grounded to the vessel. ❑ Air conditioners can be installed as an alternate of ventilation wherever it is convenient. Air Conditioners capacity will be used to identify the ventilation rate required. However, in case of use of Air Conditioners for ventilation, Air Movers shall be kept ready to use in case of Air Conditioners shutdown or any emergency. ❑ A positive means of ventilating confined space shall be established and kept operated the entire time while work is in progress. ❑ Following tips shall be considered for ventilation: ❑ Positioning of mechanical aspirators, drawing of fresh air, routing of exhaust air. ❑ Ventilation plan shall be prepared and approved as per IMRS 13-02-01-23 Ventilation plan. ❑ Ventilation of a space will also vary depending on the type of material that is being ventilated from the space. 78 78 Classification: Tasnee - General Information ❑ Rescue plan Preparation and requirements for confined Space Entry. If hazard cannot be mitigated, then Rescue shall be prepared prior to entry. ❑ When required ? ❑ Rescue Plan is mandatory for all Confined Space entry types. ❑ Rescue Plan shall consider the following: ❑ The hazards outcome of the JSA. ❑ The location of the work. ❑ Number of workers, even if there will be only single worker. ❑ The duration and period the of work. ❑ The resources needed for the rescue and the number of people required. ❑ Internal Configuration ❑ Elevation ❑ Manway Size ❑ Confined Space Access 79 Classification: Tasnee - General Information ❑ It is important to consider the following conditions when planning for a confined space entry work. ❑ Internal Configuration: ❑ Confined space contains some type of obstruction that a rescuer would need to maneuver. For example, a baffle or mixing blade, large equipment, such as a ladder or scaffold, brought into the confined space for work purposes would be considered an obstruction if the positioning or size of the equipment would make the rescue difficult. ❑ Elevation: ❑ Elevated a confined space entry where the entrance or opening is above ground by 4 feet or more. This type of confined space usually requires knowledge of high angle rescue procedures because of the difficulty in packaging and transporting a victim to the ground from the confined space. ❑ Non-elevated a confined space entry with the entrance located less than 4 feet above ground. This type of space will allow the rescue team to transport an injured worker normally. ❑ Manway Size: ❑ Restricted a Manway of 24 inches or less in the smallest dimension. Manways of this size are too small to allow a rescuer to simply enter the space while using SCBA. The Manway size is also too small to allow normal spinal immobilization of an injured worker. ❑ Unrestricted A Manway of greater than 24 inches in the smallest dimension. These Manway allow relatively free movement into and out of the confined space. ❑ Confined Space Access: ❑ Horizontal the Manway is located on the side of the confined space Use of retrieval lines could be difficult. ❑ Vertical the Manway is located on the top or bottom of the confined space. Rescuers must climb down or up the permit space respectively to enter it. Vertical portals may require knowledge of rope techniques, or special patient packaging to safely retrieve a downed entrant. 80 Classification: Tasnee - General Information ❑ Rescue plan Preparation and requirements for confined Space Entry. ❑ All confined Space Entry shall have a developed Rescue plan as per the method (using Rescue plan form) how to enter, exit, escape, and rescue personnel working in confined spaces it shall be done during the job planning phase and before confined entry Permit issuing. ❑ Confined spaces on a site visit shall be assessed to determine what special equipment or procedures may be involved when conducting a rescue operation ❑ Rescue Plan shall be prepared by task execution Supervisor or above from Tasnee team and contractor. ❑ Familiarize all execution team with the approved rescue plan before starting the activity. ❑ Provision of Rescue Equipment: ❑ Rescue Equipment shall be suitable and sufficient to respond to an emergency in a timely and safe manner. for example, rescue equipment may include: ❑ Full body harness with retrieval line attached. ❑ Hand-cranked mechanical winch and tripod (required when entrant is five feet or more below the entrance). ❑ Lifeline. ❑ Explosion-proof lighting. ❑ Breathing apparatus. ❑ Stretcher. ❑ Based on the type of the confined spaces entry and the condition of the work and location rescue plan need to be devolved. 81 Classification: Tasnee - General Information ❑ Rescue plan Preparation and requirements for confined Space Entry. If confined Space Entry Category B, the Rescue shall be prepared prior to entry with obtained approval as below: ❑ Whom will prepare and How to ? ❑ Rescue plan shall be countersigned by permit issuer. ❑ Rescue plan shall be reviewed and approved by Incident Commander. ❑ Rescue plan shall be attached with confined space entry permit at site. ❑ Minimum rescue equipment shall be readily and available. 82 82 Classification: Tasnee - General Information ❑ Rescue plan Preparation and requirements for confined Space Entry. If confined Space Entry Category A, the Rescue shall be prepared prior to entry with obtained approval as below: ❑ Whom will prepare and How to ? ❑ Rescue plan shall be countersigned by permit issuer. ❑ Rescue plan shall be reviewed by Incident Commander. ❑ Rescue plan shall be approved by Incident Commander. ❑ Rescue plan shall be attached with confined space entry permit at site. ❑ Minimum rescue equipment shall be readily and available. 83 83 Classification: Tasnee - General Information ❑ Safe Access and Exists for confined Space. ❑ The manway and or cover shall not be opened until made safe to enter. ❑ All open manway and or cover not in use must be positively barricaded. ❑ barricading tape is not allowed to be used for manway and or cover. ❑ In all cases, adequate and safe access and exit out shall be provided for the confined space. ❑ Personnel should not be lowered into confined spaces, without facilities to climb back out themselves. ❑ Use of cage for lifting material / person in the confined space shall be included in the JSA. ❑ personnel shall not be underneath when material is lowered or removed from confined space through winch / rope, cage, basket, etc. ❑ Condition Changes during confined Space Entry Permit. If a confined space condition been interrupted due to potential toxic or respiratory hazardous atmosphere arise or any emergency that requires immediate departure from the confined space: ❑ ❑ ❑ ❑ ❑ the Standby Person shall notify the concerned issuer as soon as possible. The Permit shall be withdrawn. All the entrants shall leave the confined space immediately. Permit issuer shall immediately cancel the confined entry permit. The confined space shall be evaluated to determine how the hazardous atmosphere developed. ❑ Control measures shall be implemented to eliminate the hazardous atmosphere prior to any subsequent entry. 84 Classification: Tasnee - General Information ❑ Work inside confined Space. ❑ Work at elevation inside confined space. ❑ ❑ ❑ ❑ The area below elevated work shall be barricaded Splash pans (used to collect oil spillage) shall be provided as needed. warning signs of overhead work shall be posted workers underneath elevation shall be protected from objects falling by means of suitable temporary barrier. ❑ Equipment and Tools for Confined Space. ❑ All electrical equipment shall be properly insulated and grounded with GFCI (ground fault circuit interrupter) connected. ❑ All electrical equipment shall be less than 24 volts. ❑ Pneumatically driven power tools equipped with conductive air supply hoses shall be used where possible. ❑ All hand-held electrical equipment shall meet the applicable local/regional/international standards. ❑ All cord and plug connected electrical equipment shall be equipped with ground fault circuit interrupters. ❑ Scaffolding, whenever required, shall does not obstacle the entrance or exit into or out of the confined space. 85 Classification: Tasnee - General Information ❑ Hot Work inside confined spaces. When Hot Work is necessary inside confined space, special precautions must be taken according to the obtained hot work requirements: ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ A Hot Work Permit shall be issued in addition to the Confined Space Entry Permit. The Equipment shall be prepared for hot work. A detailed analysis (JSA) shall be developed and followed. Adequate ventilation shall be required at all times when performing hot work in a confined space. Vessel internals such as vortex breakers, columns, , trays, etc. shall be carefully checked to ensure complete removal of material which might be a source of flammable, toxic or other gases, liquids, vapors or dusts at working location. Hot work shall not be allowed in any confined space where there are other activities in progress which could increase flammable gas levels in the space or create hazards for others in the space. An approved dry chemical fire extinguisher (A, B, C) shall be positioned as near the entrance as possible. Fire Extinguishers must be provided by the contractor. TASNEE Fire extinguishers shall not be used for hot work by contractor. When persons are working in close proximity or overhead of each other, suitable barriers shall be provided. 86 Classification: Tasnee - General Information ❑ Hot Work inside confined spaces. ( continued ) ❑ When welding taken place in confined spaces the following precautions shall be followed. ❑ Atmosphere Testing shall be carried out. ❑ Welding machine shall be grounded. ❑ Compressed Gas cylinders and welding machines shall be kept outside the confined space. ❑ Gas-burning or welding torches shall not be left inside the confined space while unattended. ❑ If removal of the torches is impractical, the hose at the regulator shall be disconnected. ❑ The gas cylinders shall be removed from the operating area at the end of any work period. ❑ When arc welding is to be stopped for any reason, the electrode shall be removed from the electrode holder and the holder carefully located so that accidental contact cannot occur. ❑ The welding machine shall be shut down or disconnected from the power source while unattended ❑ All arc welding leads and oxy-acetylene hoses shall be inspected for cuts, leaks, breaks, and insulation damage prior to use and repaired or replaced before use. ❑ Hoses and torches should be lowered through the manhole. 87 Classification: Tasnee - General Information ❑ Hot Work Outlines: ❑Nature of hot work ❑Asset preparation for hot work ❑Tools and location preparation for hot work ❑Prohibited of hot work 88 Classification: Tasnee - General Information ❑ Nature of hot work Any work capable for supplying of ignition source or any work that presents a hazard or high risk to employees and/or plant facilities. such as but not limited to: ❑ Use of open flame/spark producing equipment, welding, torch cutting, brazing, chipping, grinding, etc. ❑ Hot work permit shall be obtained for running/operate equipment’s and machines at site when exceeding the duration of vehicle / equipment entry permit. ❑ Working on live electrical circuits. ❑ Use of non-intrinsically safe electrical tools, explosive power cartridges, cameras or other activities which produce internal sparks, hot surfaces or other ignition sources. 89 Classification: Tasnee - General Information ❑ Asset preparation for hot work: ❑ Asset has been De- pressurized, vented, purged, ensuring no flammable or combustible or other related materials remaining. ❑ Blocked valves including double block and bleed arrangements are not acceptable methods of positive isolation for hot work. ❑ positive isolation by installing rated blind or disconnecting line whenever applicable. ❑ JSA. ❑ Master blind list & marked up P&IDs. ❑ Master tag list & marked up P&IDs. ❑ Energy isolation form. ❑ Instrument impulse tubes shall be purged, disconnected and tagged. ❑ The lines and sources of flow or pressure shall be positively isolated. 90