ADNOC WPR interview question and answers for UAE
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The document outlines essential safety protocols for electrical area and zone classifications, permit to work (PTW) procedures, risk assessments, and specific safety measures for lifting, power tools, working at heights, and confined spaces. It provides detailed classifications and requirements for various types of PTWs, identifies hazards associated with different activities, and emphasizes the importance of proper training, equipment inspection, and emergency response actions. Additionally, it addresses the need for gas testing and precautions in scenarios involving toxic substances such as hydrogen sulfide (H2S) and various emergencies.
ADNOC WPR interview question and answers for UAE
- 1. ADNOC JP ASSESSMENT INTERVIEW QUESTIONS Q1 WHAT IS ELECTRICAL AREA CLASIFICATION? CLASS-I DIVISION 1 – HV ABOVE 650 VOLTS CLASS-I DIVISION 2 – MV 250 - 650 VOLTS Unclassified – LV Less Than 250 VOLTS Q2 WHAT IS ZONE CLASIFICATION?
- 3. ZONE 0 - Harmful and Toxic Gases are always present in NORMAL conditions. (Also known as Brown Field) (Example: 30 Meters radius of live flare, well heads) ZONE 1 - Harmful and Toxic Gases are occasionally present in NORMAL conditions ZONE 2 - Harmful and Toxic Gases are present in AB NORMAL conditions. In case of live pipe rupture. UNCLASSIFIED: Area free from Harmful and Toxic Gases Q3. WHAT IS PTW? A) Permit to Work is Official Legal Document required to carry out work activity in a safe manner. Q3.1 WHAT ARE SECTIONS OF PTW (WMS)? PTW has following sections:- 1. Permit Request 2. Work site controls and supporting 3.Permit Endorsement 4. Permit Approval 5. Permit Authorization 6. Work site issue & Suspension 7. Permit Closer Q4. TYPES OF PTW? There are 3 types of PTWs
- 4. Critical Work: A permit used for critical work activities listed in ‘Work Categorization Chart’ or identified by the Group Company as Critical or High/ High-Medium Risk (as per ADNOC RAM). Hot Work: A permit used for activities that contain a positive source of ignition as part of the nature of work activity. Examples include but not limited to hot surfaces, naked flames, hot gases, mechanically produced sparks, chemical reactions, etc. General Work: A Permit used for activities that does not form part of the defined critical work, and does not contain any hot work. LEVELS OF JSA Level 1 – Standard Hazard Control Form (SHCF): General Work Permit Level 2 – Hazard Management Form (HMF): Critical or Hot Work Permit Valid – Every 2 Years Approved by: Asset Approval Authority (AAA) Formal Risk Assessment: For a work activity or a work scope, the IWAP team determines whether a Formal Risk Assessment shall be required Valid- Every 1 Year Approved by: Asset Approval Authority (AAA) IWAP TEAM (INTEGRATED WORK ACTIVITY PLANNING) Asset owner or Representative, PTW Coordinator, Planning Representative, PA and JP Q5. WHAT DOCUMENTS ARE ATTACHED WITH PTW? 1. Method Statement 2. FRA (Formal Risk Assessment) or JSA ( Job Safety Analysis) 3. Relevant Drawings 4. PTW Certificates 5. Scanning Reports Q6. WHAT ARE THE STEPS OF FRA Task Risk Assessment is the system for identifying hazards and controlling its risk with the help of risk assessment matrix. 1. Job Steps 2. Hazards 3. Cause 4. Consequences 5. Potential Risk 6. Existing Barrier / Control 7. Recommended Controls 8. Action by (JP or Supervisor) 9. Residual Risk 10. ALARP 11. Completion (6 Months) Q7. WHAT IS HAZARD? Hazard is anything that has potential to cause harm.
- 5. Q8. WHAT IS RISK? Risk is probability and severity of the hazard Q7. WHAT IS POTENTIAL RISK Potential Risk is the risk of hazard before implementation of Control Measures Q8. WHAT IS RESIDUAL RISK Residual Risk is the risk left over after implementation of control measures. Q9. WHAT IS ALARP As Low as Reasonably Practicable. It means the risk is controlled as much as possible and cost of further reducing it will be very high compared to the benefit of reducing it. Q10. WHAT IS VALIDITY OF FRA / WHEN SHOULD BE A TRA REVISED Validity of FRA is 12 months. TRA should be revised if there are changes in the following 1. Work Location 2. Tools and Equipment Used 3. Work Activity 4. In case of major accident Q11. HOW MANY TYPES OF PTW CERTIFICATES ARE THERE? ANS:-There are 10 Certificates in PTW 1. Confined Space Entry 2. Excavation 3. Vehicle and Machine Entry 4. Diving 5.Ionizing Radiation 6.Atmospheric Test Record 7.Easement 8.Energy Isolation 9.Temporary Defeat 10.Road Closure Q11 WHAT ARE THE HAZARDS OF LIFTING? 1. Suspended Load 2. Crane Collapse 3. Fall of load 4. Damaged Tools and Tackles 5. Improper Signaling 6. Uneven ground conditions 7. Adjacent / nearby structures 8. Overhead power lines 9. Mechanical Failure 10. Improper rigging 11. Uncontrolled movement of load
- 6. Q12 WHAT ARE THE PRECAUTIONS OF LIFTING? 1. Permit to Work 2. Lifting Plan 3. Third Party inspection and color coding of crane, tools and tackles 4. Third party certified crane operator, rigging supervisor and riggers 5. Only 1 trained and approved rigger shall give the signal 6. Crane shall be positioned away from the adjacent structures and overhead power lines 7. Preventive maintenance of the crane 8. Daily inspections 9. Barricading and sign boards 10. Do not stand or stay under the suspended load 11. Outriggers shall be completely extended 12. Safety devices such as Anti Two Block, Anemometer, Limit Switch and Level Indicator shall be installed in crane. 13. Crane should be positioned on the level ground and outriggers shall be placed on the outrigger pads. 14. Two taglines shall be used Q13 WHAT IS LIFTING PLAN Lifting plan is a document that has all the information required to calculate the safe working load of a crane. Q14 HOW MANY TYPES OF LIFTING ARE THERE? Routine Lifting Operations Non- Routine Simple Lifting Operations Non- Routine Complicated Lifting Operations Non- Routine Complex Lifting Operations Routine Lifting Operations Categorization Criteria 1. Load Net Weight less than or equal to 80% SWL; within the normal operating parameters of the lifting equipment. 2. Permanent installed lifting equipment. 3. Certified lifting point or points 4. Not lifting over live plant or occupied areas or people. 5. Not lifting over or in close proximity (less than 3 m) to active or energized hydrocarbon process or pressurized utilities process equipment. 6. Load has known and uniformly distributed Weight, Uniform Shape, and Identified Centre of Gravity. 7. Centre of gravity below the lifting points. Competent Personnel 1. Lifting Equipment Operator and Rigger/ Banksman as required. 2. Appointed Person 3. Single Point Authority. Non- Routine Simple Lifting Operations Categorization Criteria 1. Load Net Weight less than or equal to 80% SWL; within the normal
- 7. operating parameters of the lifting equipment. 2. Temporary installed lifting equipment. 3. Certified lifting point or points. 4. Limited headroom to complete lifting operations. 5. Not lifting over live plant or occupied areas or people. 6. Not lifting over or in close proximity (less than 3 m) to active or energized hydrocarbon process or pressurized utilities process equipment. Competent Personnel 1. Lifting Equipment Operator and Rigger/ Banksman as required. 2. Appointed Person. 3. Single Point Authority. Non- Routine Complicated Lifting Operations Categorization Criteria 1. Load Net Weight more than 80% SWL but less than 90% SWL; without any Factor of Safety with exception of Overload Testing of Fixed and Mobile Lifting Appliances”. 2. Temporary installed lifting equipment. 3. Non-certified lifting point or points. 4. Limited headroom to complete lifting operations. 5. Lifting in close proximity (less than 3 m) to active or energized hydrocarbon process or pressurized utilities process equipment. 6. Use of two or more Lifting Appliances including tailing pipes using winch and crane (Tandem Lift). Competent Personnel 1. Lifting Equipment Operator and Rigger/ Banksman as required. 2. Appointed Person, 3. Single Point Authority 4. TPA competent person. Non- Routine Complex Lifting Operations Categorization Criteria 1. Load Net Weight is ≥ 90 %of SWL (without any factor of safety); however Dynamic Lift Load which is compared to Load Chart shall not exceed 100%SWL considering all applicable Factors of Safety. 2. Temporary installed lifting equipment. 3. Non-certified lifting point or points. 4. Limited headroom to complete lifting operations. 5. lifting over active or energized hydrocarbon or pressurized utilities process equipment. 6. Load is unknown or not uniformly distributed weight, or not uniform shape, or difficult to identify centre of
- 8. gravity or not Robust Packaging. 7. Large loads (large Surface Area/ Volume) requiring special lifting and slinging requirements. 8. Unsuitable or unavailable lay down area. 9. Tandem lift with two cranes or more. 10. .Dangerous goods cargo lifting, such as explosives, propane tanks etc. 11. .Load is special and/or expensive the loss of which would have a serious impact on production operations, e.g. power plant turbine. 12. Snatching a load from untied vessel for None DPII (Dynamic Positioning) vessels. 13. Transferring the load from one lifting appliance to another. 14. Lifting with a helicopter. 15. .Subsea lifting (the entire Load to be submerged in the water regardless of Crane's Hook Block). Competent Personnel 1. At site-Competent Lifting Equipment Operator. 2. In addition, for cranes-Rigger level 3/ 3. Signaler/Banksman. 4. Appointed Person. 5. Single Point Authority. 6. Asset Owner. 7. Lifting Technical Authority. 8. Third Party Lifting Specialists (If requested by the site or the project). Ten Questions for Safe Lift 1. Is everyone aware of and do they fully understand the lifting and hoisting procedures applicable to the lift? 2. Has everyone involved with this lifting operation attended the toolbox talk? 3. Has a pre-use inspection of the lifting equipment been carried out and are the lifting accessories tagged or marked with: a) Safe working load? b) A unique identification number? c) Is correct color code applied and certificate validity verified? 4. Are all safety devices working? 5. Does everyone know the Appointed Person of the lift? 6. Is everyone competent and aware of his or her tasks? 7. Is there a current Lifting Plan and JSA and does everybody understand the job and precautions? 8. Does everyone know the environmental limits (e.g. maximum permissible wind speed) for the lift? 9. Is the lift area controlled and is everyone clear if the load falls or swings? 10. Are signalling methods and communication agreed and clear to you?
- 9. Q15 WHAT IS LOAD CHART Load chart is used to calculate the safe working load of with crane with the parameters such as boom length, boom angle and boom radius. Q16 WHAT ARE THE HAZARDS OF POWER TOOLS 1. Electric Shock 2. Fire & Explosion 3. Sparks 4. Cut Injuries 5. Burn Injuries 6. Noise 7. Vibration Q17 WHAT ARE THE PRECAUTIONS OF POWER TOOLS 1. 110v power supply with 30 mAmp ELCB 2. Dead Man’s switch 3. Machine Guard 4. Area should be free from combustible and flammable materials
- 10. 5. Disc RPM (rotations per minute) shall be greater than Machines RPM 6. 100 percent spark containment. Area should be completely covered to prevent sparks from coming outside 7. Welding habitat or Welding booth 8. Fire extinguisher 9. Fire blanket 10. Trained Fire Watch 11. Double eye protection (Safety Goggles and Face Shield) 12. Leather gloves 13. Apron 14. Hearing protection (ear plugs or ear muffs) 15. Job rotation for long duration of work Q18. WHAT IS ISOLATION PROCESS OR LOTO? Identify energy sources i. Notify who is involved in particular activity. ii. Shutdown the equipment. iii. Isolate the equipment. iv. Use LOTO equipment v. Stored energy to be released. vi. Recheck isolation. vii. Perform the activities viii. LOTO release. (de-isolation) Q19. WHAT ARE WORKING AT HEIGHT HAZARDS? Falling from Height Fall of materials and equipment Q20. WHAT ARE WORKING AT HEIGHT PRECAUTIONS / CONTROLS? 1. Wear Full Body harness with 2 lanyards 2. 100 % tie off 3. Guard Rails and Toe boards 4. Working platform shall be inspected and tag shall be available 5. Tool lanyard for tools 6. Do not store unwanted material at height Q21. WHAT ARE THE HAZARDS OF MOBILE SCAFFOLDING? 1. Scaffolding Collapse 2. Accidental movement of mobile scaffold 3. Workers trying to overreach out of the scaffolding platform 4. Moving mobile scaffold without unlocking the wheels 5. Mobile scaffold toppling 6. Moving mobile scaffold with worker standing on the platform 7. Contact with overhead power lines Q22. WHAT ARE THE PRECAUTIONS OF MOBILE SCAFFOLDING? 1. Check green tag on the scaffold 2. Do not move mobile scaffold while person is standing on it 3. Do not move mobile scaffold with locked wheels 4. Do not over reach out of the platform 5. Unlock the wheels before moving the scaffold 6. Do not position the scaffold near the surface edge or adjacent to overhead power lines Q23. WHAT IS H2S H2S (Hydrogen Sulphide) is highly toxic and corrosive gas.
- 11. Q24. WHAT ARE PROPERTIES OR CHARACTERISTICS OF H2S Highly Toxic Corrosive Soluble in water Color less Rotten egg smell at 1 PPM Q25. WHAT ARE THE PRECAUTIONS FOR H2S 1. H2S training 2. Personal H2S Gas Monitor (Note: Personal H2S gas monitor doesn’t detect hydro carbons or other gases) 3. Emergency Escape Breathing Apparatus 4. Windsock 5. H2S alarms 6. Emergency Evacuation Route 7. Emergency Evacuation Plan 8. Emergency Stand by vehicle Q26. HOW TO EVACUATE IN CASE OF H2S LEAK Stop the work activity Stop the equipment if possible Look at the wind sock for wind direction Go cross wind until the h2s alarm stopped ringing then go up wind to the assembly point Do a head count? Inform emergency contact number about the h2s leak and evacuation If anyone is missing in the head count inform the emergency contact number to send a rescue team. Q27. WHAT IS A CONFLICTING ACTIVITY? Two or more activities are carried out in the same location at the same time and workers are effected with the hazards of other activity. Q28. WHAT HAS TO BE DONE IF THERE IS A CONFLICTING ACTIVITY? Coordinate with the JP of other activity If the other JP cannot stop the activity discuss with the Issuing Authority about conflicting activity. Q29. WHAT ARE THE PRECAUTIONS FOR SAFE USE OF MACHINERY AND EQUIPMENT 1. Machine / Equipment shall be inspected and color coded and 3rd party certified. 2. Inspection tag shall be available on the machine 3. Machine guards shall be available 4. 3rd party training shall be given to the operators (crane and boom truck) 5. Area barricading and sign boards 6. Area shall be free from flammable and combustible materials 7. Fire extinguisher shall be nearby equipment Q30. WHAT IS HIGH RISK ACTIVITY Non-Routine Complicated & Complex Lifting Scaffolding above 10 meters height Hot work inside confined space Tandem Lifting Q31. HEAT STRESS
- 12. (TWL) Thermal Work Limit TWL 140-220 above Low Risk Unrestricted Zone Safe to Work for all activities TWL 115-140 Medium Risk Cautionary Zone Heavy Work (45 min work- 15 min rest) TWL below 115 High Risk Zone Light Work (45 min work-15 min rest) Heavy Work (20 min work-40 min rest) Q32. WHAT ARE THE TYPES OF EMERGENCIES AND ACTION REQUIRED FOR EACH EMERGENCY Medical Emergency: Immediately call the first aider, Call emergency contact number and give following information - Your Name, Company Name - Your exact location (including at height or at ground ) - Type of emergency - Inform what assistance is required - Place 1 worker at the access for guiding emergency vehicle. H2S Leak: - Stop the work activity - Stop the equipment if possible - Look at the wind sock for wind direction - Go cross wind until the h2s alarm stopped ringing then go up wind to the assembly point - Do a head count - Inform emergency contact number about the h2s leak and evacuation - If anyone is missing in the head count inform the emergency contact number to send a rescue team. Fire - Stop the work activity - Turn off the nearby equipment if possible - Extinguish the fire with fire extinguisher if possible - Evacuate towards the assembly point - Do a head count - Inform emergency contact number about the fire action taken - If anyone is missing in the head count inform the emergency contact number to send a rescue team Q33. WHAT ARE THE HAZARDS OF CONFINED SPACE 1. Presence of toxic gases 2. Fire & Explosion 3. Poor ventilation 4. Poor Illumination 5. Oxygen deficiency 6. Oxygen enrichment 7. Improper access or egress 8. Suffocation 9. Extreme Temperatures Q34. WHAT ARE THE PRECAUTIONS OF CONFINED SPACE 1. PTW 2. Confined Space Entry Certificate 3. Confined Space Entry Training 4. Gas Testing a. Oxygen 19.5 to 22.5 b. Carbon Monoxide – 30 PPM
- 13. c. LEL (Lower Explosive Limit of Hydro Carbons) – Less than 5 PPM) d. H2S – 0 PPM 5. Confined Space Entry Training 6. Hole watch with entry exit log sheet and tally board 7. Regular communication with the entrants 8. Proper Ventilation 9. Proper Illumination ( 24V lights) 10. Proper Access egress 11. Emergency Rescue Plan 12. Emergency Rescue Equipment ( Stretcher, Harness, Crane, tri pod) Q35. WHAT IS GAS TESTING AND WHERE IS GAS TESTING REQUIRED? Gas Testing is conducted to identify if there are any toxic gases present and to check the oxygen level. Gas test is required in the confined spaces, in excavations and in brown fields (Zone 0,1 and 2) Q36. WHAT IS SOURCE OF IGNITION? GIVE EXAMPLES Anything that has potential to cause fire or explosion is an ignition source. Example: Cutting, welding, grinding, friction, electricity, hot surfaces. Q37. HOW MANY TYPES OF SCAFFOLDING TAGS ARE THERE Red Tag – Do not Work Yellow Tag - Scaffolding under modification (only scaffolders can work) Green Tag – Scaffolding ready to use Q38. WHAT ARE THE HAZARDS OF EXCAVATION 1. Underground Utilities 2. Excavation Cave in (excavation wall collapse) 3. Presence of toxic gases 4. Fall of people/ vehicles / tools in the excavation 5. Water accumulation in the excavation 6. Improper access 7. Confined space if excavation is deeper than its width and length. Q39. WHAT ARE THE PRECAUTIONS / CONTROLS OF EXCAVATION 1. Underground utility scanning (for underground facilities) 2. Trial Pits (for underground utilities) 3. Drawings and surface marking of underground utilities (for underground facilities) 4. Excavation sloping or benching (for excavation all collapse) 5. Excavation shielding and shoring (for excavation all collapse) 6. Gas Testing 7. Hard Barricade and sign boards 8. Alternate access if excavation is near to the road 9. Create bund walls for preventing outside water from coming inside. Dewatering for the internal water. 10. Confined space precautions if excavation becomes a confined space. Q40. WHAT ARE THE HAZARDS OF WELDING AND CUTTING 1. Fire & Explosion 2. Sparks 3. Electrocution 4. Toxic Fumes 5. Burns 6. Infrared Rays 7. Arcing
- 14. Q41. WHAT ARE THE PRECAUTIONS OF WELDING AND CUTTING 1. PPE (Full length leather gloves, Apron, welding helmet, leather leg guard, hand sleeves and Filter mask.) 2. 30 mAmp ELCB and earthing shall be provided 3. Gas testing in congested areas 4. Welding Helmet for welder and helper 5. Fire Blanket, Fire Extinguisher and fire watch 6. 100 % Spark containment 7. Area free from combustible and flammable materials Q42. WHAT IS LSR, HOW MANY LSRs ARE THERE There are 10 LPRs 1. Work Authorization 2. Bypassing Safety Controls 3. Confined Space 4. Driving 5. Energy Isolation 6. Line of fire 7. Toxic gas 8. Hot work 9. Work at Height 10. Safe Lifting operations Q43. WHAT IS STOP POLICY Anyone can stop the unsafe work. Q44. WHAT IS THE RESPOSIBILITY OF JP? 1. Primary responsibility is to take care of health and safety of workers 2. Ensure all ADCO procedures are followed. 3. Submit permit and certificate in one day advance. 4. On completion or suspension of work the work site must be clean, clear and safe. 5. Attaches the TRA to the permit before submission. 6. Once condition and controls are checked, jp signs the permit and receives permit from issuing authority. 7. Implements the work site precautions and controls identified by the area authority and check by issuing authority. 8. Remain at work site for the duration of the work. 9. Conducts a tool box talk before the job start. 10. Suspends work in the event of emergency and general alarm. 11. Display the copy at work site. 12. Close the permit upon completion of the work activity. Q45 .HOW MANY TYPE OF LADDER AND POSITION? There are two type of ladders 1. Access ladder- which is installed with green tag.(should be 75 degree) 2. Normal ladder-which is permanently fixed with equipment. Q46.WHAT IS PASS? P-Pull the pin from fire extinguisher A-Aim base of the fire S-Squeeze the handle S-Spread zigzag. Q47.WHAT IS ELECTRICITY? Flow of electrons in a closed circuit.
- 15. Q48.WHY USE 110 VOLTS INSTEAD OF 220 To reduce the risk of electrocution. (Electrocution causes cardiac arrest). At 220 volts current is around 72 amperes which can cause electrocution. Q49.Hydro Test HAZARDS: Test assembly rupture, creating flying fragments; Component or connector failure, creating missiles projected under force; Test hose failure including detachment, with consequential hose whip, striking people; Sudden release of the test medium (liquid, gas, vapor, dust or other substance under pressure) causing injury, e.g. burns, eye damage or pressure injection into bodily tissue; Unauthorized Entry; Lack of supervision; In competent person. PRECAUTIONS FOR HYDRO TESTING: Do not forget to tell the underline bullets as first priority: All fittings, joints, flanges, blinds & hoses shall be rated and capable of withstanding the combined weight of any equipment and the test medium. All the Gauges shall be calibrated and certified. Pressure safety Valve shall be installed in test line to prevent the test pressure being exceeded. Whip arrestor shall be provided for all joins. Controls/gauges must be located at a safe distance from the equipment to be tested and gauges shall be clearly visible to the operator controlling the pressure. No personnel other than those directly involved in the testing shall be allowed in the test area and it shall be cordoned off to prevent unauthorized entry. Warning signs are to be strategically posted on equipment being tested and at the perimeter of the test area. Lookout personnel are to patrol the area perimeters continuously during the testing operation. Testing shall only be performed under the direct supervision of a Responsible Person. All personnel involved with testing shall be aware of, and trained in, the procedures to be implemented, and familiar with the hazards and risks associated with the activity. Standard warning signs are to be strategically posted on equipment being tested and at the perimeter of the test area. Lookout personnel are to patrol the area perimeters continuously during the testing operation. A non-hazardous fluid for the leak test shall only be used; usually nitrogen or water. Leak test with a hydrocarbon gas or liquid; shall only be done in exceptional circumstances with the written approval of the Site Manager following a suitable and sufficient risk assessment. Systems that have contained air following the test shall be inserted prior to the introduction of hydrocarbons to avoid any possible explosive pockets during process phase. “Note: The test pressure will be more than 2.5%of running pressure, e.g. if the running pressure is 10 bar, the test pressure will be 12.5%”
- 16. CALCULATION FORMULA TO DETERMINE BARRICADES SAFE DISTANCE Safe distance = (0.15) X (D) X (a) ^0.4 X (p) ^0.6 Where 0.15 is the design pressure, D- Internal diameter (m), a- length/diameter of the piece (m), p- test pressure (bar); Note: “^” this symbol known as exponent. Q50.Abrasive Blasting Abrasive blasting which is also commonly referred to as sand blasting is a process in which a medium is used to smoothen out or polish a rough surface. In a world full of machinery and metal parts, rust and corrosion are a common pestilence. Thankfully, abrasive blasting is a quick and efficient solution to getting these metal parts functioning and looking their optimum best. This process can also be used to prepare surfaces that need repainting. TYPES OF BLASTING: Silica Sand or Silicon Dioxide. Silicon Dioxide refers to ordinary sand, which is also known as silica or quartz. Soda. Soda sandblasting refers to the use of baking soda or bicarbonate of soda in the blasting process. Steel Grit. Glass Bead. Bristle Blasting. BLASTING HAZARDS: Use of hand held power tools, and air compressor. Hose breakage due to weak connections or improper hoses. Improper flow of breathing air through the air line respirators. Expose from Dust/Noise, Material /tools drop down from height. Improper handing / misuse of garnet. Personnel Injury/Property Damage. Slip, trip & fall. Injury due to incorrect handling during removal of materials. BLASTING CONTROL MEASURES: All equipment’s/tools involved in this activity are inspected by the competent person and current color coded. Assured grounding /earthling system provided to the hopper and other equipment that require. Only competent personnel to perform the sand blasting job. Barricades and Sign boards “Danger! Blasting works in progress “to be provided. Hoses to be secured with heavy duty couplings and firmly secured. Whip checks to be used. Breathing apparatus with filter system to be used. The quality of breathing air used for airline respirator is monitored on daily basis. It is tested and certified by 3rd party. The switch shall not be tied or bound with nozzle for continuous operation.
- 17. Covered with tarpaulin (outside blasting) to prevent spreading of garnet dust all over the area. Removal of the used garnet done at the end of every shift Personnel shall be used dust mask as recommended MSDS. Ear protection must be used. Garnet stored in designated enclosed areas... Required sing boards and MSDS provided at the storage location. All used garnet stored in a different location are identified by sing boards. All maintenance activities on the installations and (gear) motors should be carried out while the installation is switched off. Ensure adequate safe access and Egress Use appropriate PPE Ensure all area shall be free from material & maintain good housekeeping. Secure all hoses to avoid tripping hazard.