Permit to work Certification-Refresher_Part5.pdf

Classification: Tasnee - General Information ❑ Tools and area preparation for hot work: ❑ An initial combustible (LEL) gas test shall be done prior to commencing the hot work. ❑ Gas tests shall be continuous or periodically repeated according to the plant condition criteria. ❑ flammable and combusti...

Classification: Tasnee - General Information ❑ Tools and area preparation for hot work: ❑ An initial combustible (LEL) gas test shall be done prior to commencing the hot work. ❑ Gas tests shall be continuous or periodically repeated according to the plant condition criteria. ❑ flammable and combustible materials shall be controlled and removed ensuring no materials present within (11 m) radiance from the hot work area ❑ sewers, drains and floor opening shall be covered and wetted. ❑ Gas cylinders and welding machine shall be kept in a safe distance from the welding / cutting operation. ❑ Sparks generated shall be totally contained ❑ All equipment and tools shall be free of any defects ❑ Oxygen cylinder hoses and fittings shall not be in contact with oil or grease. ❑ Valves on cylinders and torches must be closed not in use. ❑ Gas cylinders must be chained and secured upright in cylinder trolley. ❑ Welding machine shall be inspected and grounded. 91 Classification: Tasnee - General Information 92 Classification: Tasnee - General Information ❑ Gas Testing Outlines: ❑ Gas testing is conducted by using a gas testing device (gas detector) to determine air quality, work atmosphere suitability and the required personal protective equipment. ❑ It ensures that worker will not be exposed to harmful concentrations of hazards substances or an oxygen deficient atmosphere, ❑ Atmospheres that have not been tested shall be considered hazardous until tests prove otherwise. ❑ Even during conducting gas testing, don’t enter or insert your body into a hazardous atmosphere. ❑ Gas detectors shall only be used in atmospheres containing oxygen between (10 - 20.8 %) as the device will not accurately function beyond this range. ❑ Gas testing subtitles: ❑ ❑ ❑ ❑ Gas Testing Requirements. Gas test Frequency. Concentrations & Safe Ranges of Gases. Gas Detectors Maintenance & Calibration. 93 Classification: Tasnee - General Information ❑ Gas Testing Requirements: ❑ Gas testing is mandatory for hot work, confined space entry, vehicle/equipment entry, and working in live electrical circuits in classified areas. ❑ All users of portable gas detectors shall be trained and certified. ❑ Works outside the designated hazardous location may no longer require a gas test. ❑ For measurement on enclosed locations the following precautions shall be taken: ❑ Avoid condensation or sucking up liquid into the sample tube. ❑ Hot work (e.g., flame, arc, or spark) shall not be permitted until atmospheres has been tested and concentration of gas or vapor is less than 5% of the LEL. ❑ Portable or continuous monitoring devise shall be equipped with An audible alarm and visible light for warning purpose. ❑ The alarms of the gas testing device should stay until the device is reset or the concentrations have returned to safe level. ❑ Whenever gas detector alarm sounded all workers shall stop the work, evacuate to safe assembly area and report to permit issuer. ❑ For open flame / spark, continuous gas monitoring is mandatory. ❑ The test result shall be recorded in the Work Permit by the authorized gas tester. 94 Classification: Tasnee - General Information Always test the air at various levels to be sure that the entire space is safe. Good air near the opening does NOT mean there is good air at the bottom! 95 Classification: Tasnee - General Information ❑ Gas test Frequency: ❑ Maximum allowable frequency between gas test is 2 hours. ❑ Gas test frequency shall be clearly identified in the work permit ❑ In the case of continuous gas test, ❑ Functional test shall be carried out for the Gas detector device at least during start of the operation each new shift. ❑ Gas test result shall be recorded in the Work Permit every 2 hours. ❑ A fresh gas test shall be carried out before: ❑ Restarting hot work in the event that the job is stopped/ interrupted for more than one hour. ❑ If an operational upset occurs or conditions change during the course of the work which could affect the concentration of hazardous or toxic gas at the work site. ❑ If there’s a doubt or requested, gas testing shall be conducted/repeated. 96 Classification: Tasnee - General Information 97 Classification: Tasnee - General Information ❑ Concentrations & Safe Ranges of Gases: ❑ No person is allowed to work in an atmosphere containing toxic gas or vapor in a concentration beyond threshold limits value (TLV) without using appropriate protection. ❑ Threshold limits value (TLV) for each substance can be found in SDS. 98 Classification: Tasnee - General Information ❑ Gas Detectors Maintenance & Calibration: ❑ Operations shall ensure that maintenance and calibration of portable gas detector instruments shall confirm with the manufacturer’s specifications and recommendations. ❑ Maintenance and calibration of these gas detectors shall be undertaken by the Maintenance or authorized third party. ❑ Any fault indications, noted by the operator using the equipment, shall be reported immediately to the Operation Shift Supervisor. ❑ The Operations Shift Supervisor shall ensure that operational checkup of these gas detectors is done to ensure their reliability and its condition. ❑ All Operations personnel authorized to conduct gas test must first check the condition of the equipment prior to its use. ❑ Gas detectors by contractors or third parties are allowed after it's been checked and approved by related maintenance department. ❑ Competent third party shall calibrate gas detectors. ❑ Only trained and competent personnel shall carry out calibration, repairs and maintenance of gas detectors. ❑ Periodic checks shall be carried out on or before the inspection expiration date to ensure the portable gas testing device is reliable. ❑ In case of detector calibration validity date expired, the detector shall not be utilized. ❑ (Refer to below Photo Gas Detector device & inspection expiration). 99 Classification: Tasnee - General Information Working at Heights ❑ Personnel working at heights higher than two (2) meters shall be protected ❑ Wear the required safety harness with two (2) lanyards. ❑ Scaffold requirements must be adhered to at all times. ❑ Scaffolding validity is every two weeks from erection date. ❑ Valid Scaffold Tag (Scaff tag). 10 Classification: Tasnee - General Information Excavation Work Excavation Work Preparation ❑ Clearly define the type of excavation, manual and/or machine excavation. ❑ If de-energization of underground utilities is not possible or location is not identified, then the method of excavation shall be established to minimize hazards by such means as: ❑ The cable detector shall be used to identify the underground cable or utilities. ❑ Trail pit by hand excavation along the area to be excavated. ❑ Use of hand-tools in area of underground services. ❑ Insulate workers and equipment from possible electrical contact. ❑ Use tools or equipment that will reduce the possibility of damage to underground services and hazard to workers. 10 Classification: Tasnee - General Information Excavation Work Excavation Work Preparation ❑ ❑ Excavations will require a plan provided by the requester and approved by Technical (R&I) Department: ❑ Excavation depth is more than 1.2 meters. ❑ Excavation location is adjacent to structures or equipment. ❑ Excavation location is subject to vibration or ground water. If the excavation will obstruct any roadway or access partially or totally, the Security and Fire Sections shall be notified. Obtain necessary permission fire interruption/ isolation form. 10 Classification: Tasnee - General Information Lifting Precautions ❑ Forklifts shall never be used to lift a person. ❑ Barricades shall be put up around the work area. ❑ Nobody shall be allowed to walk or reach under a raised load. ❑ Only one operator shall be inside the cradled platform and manning the controls. ❑ No passenger shall be allowed to ride with the Scissor platform. ❑ The load to be lifted shall not exceed the maximum allowable loading capacity. ❑ When lifting a load, the center of gravity must not exceed the load center measurement from the heel of the forks, to avoid overloading. 104 Classification: Tasnee - General Information Lifting Plan Requirements ❑ Lifting in congested areas where structures, pipelines, power lines, or other obstacles are located. ❑ Lifting that involving “turning” or “flipping” the load over where “shock loading” and/or “side loading” is likely to occur. ❑ Lifting where the load weight is not known. ❑ Lifting in areas of poor soil, gravel or unknown ground conditions. i.e., Lifts involving potentially unstable pieces. ❑ Lifting involving multiple cranes. 105 Classification: Tasnee - General Information Permit Golden Rules ❑ No corrections or alterations on a permit shall be allowed. ❑ Work permits shall be completed ( issuing and closing ) in original and duplicate copy. ❑ The duplicate (field copy) shall be handed to the permit receiver and shall always be available for inspection and/or review at the work site. ❑ The original copy of the permit shall be retained at the permit office and be available for inspection at all times. ❑ All relevant documents for the issued permit should be attached to the duplicate (field copy) of the permit. ❑ Sequence of permit signatures shall follow workflow chart and work permit form as specified in the method. ❑ Blank permits shall, under no circumstances, be signed in advance. 106 Classification: Tasnee - General Information Permit Golden Rules ❑ Where a task extends over more than one equipment, a separate work permit for each equipment is required Where attachment list for the equipment shall be attached with permit as required. ❑ Task that have the same hazardous and can be identify within same area, level and location can be executed in one permit for example and not limited to (scaffolding works, greasing of pumps, taking vibration measurement) ❑ The minimum TPC PPE requirements are safety helmet, safety glasses, Safety Shoes and long sleeve clothe which apply for all employees & contractors or visitors entering plant area. ❑ The additional PPE shall be selected from company approved PPE Matrix ❑ Signing work permit shall be done jointly at work location. 107 Classification: Tasnee - General Information Permit Golden Rules ❑ During radiographic work, all other active tasks within the affected area shall be temporarily stopped and revalidated afterwards. ❑ Prior to resuming the work hazards Identification & mitigation need to be confirmed If conditions have not changed then the work may be revalidated and continue. ❑ If conditions changed then a new permit shall be issued. ❑ If the work is not completed within the agreed duration, it can be Extended MAX 12 hours total working time during normal operation and MAX 24 hours total working time during TAM. ❑ When the Receiver changed then the continuation of the work permit shall be signed on both copies. 108