Aramco Interview Questions And Answers

 

Aramco Interview Questions And Answers

1.    What is Work Method statement?              

        It is the submitted by contractor to client, covering the general work procedure of a    particular job in a safe manner as per required standard. 

2.    What is the use of W.M.S (Work Method Statement)?              

       We can plan and execute the work easily and safely. It also helps to know the codes and standards used for each activity. 

3.    What is a JSA and what is its use?

        Job Safety Analysis is the step by step analysis of a job to determine the safe working procedure. It includes the following steps. 

                                          A) Watch the job being done 

                                          B) Break the job down into steps 

                                          C) Describe the hazards in each step of task

                                          D) Identify the desired control measures and

                                          E) Implement these counter measures in the job execution

4.    What is Work Permit? 

        Work permit is the written document authorizing a person or a group to  Perform maintenance, inspection or construction work 

5.    What is confined space? 

        A confined space has limited or restricted means for entry or exit, and it is not designed for continuous employee occupancy, which subject to the hazards like deficiency of oxygen, toxic or flammable gases or substances, dust etc.    

6.    In what circumstances a confined space work permit can be issued? 

       If properly ventilated, gas test readings are satisfactory, properly barricaded and warning signs are posted, trained stand by man is present with log sheet, sufficient lighting and low voltage electricity (24V – 110v), proper means of communication, locked and  tagged out if necessary, lifeline and man retrieval system if necessary, etc.

7.   Who is the confined space attendant? 

       He is one who is aware the confined space hazards and know how to react if any thing goes wrong, able to maintain confined space entry log sheet, etc. 

8.    What are the hazards in a confined space? 

        Oxygen deficiency or enrichment, presents of toxic or flammable gases, chemical hazards, fire hazard, fall of materials, fall hazard electrocution, dust, sound, heat or cold, caught in between moving parts of equipments, engulfment etc. 

9.   What are the duties of a confined space attendant? 

       He is responsible for the safety of entrants, should be present whenever people are working in confined space, Maintain updated entry log sheet, maintain continues communication with entrants and monitor conditions in the confined space to ensure a safe working atmosphere, Prevent unauthorized entry of personnel, initiate alarm for help if needed, evacuate the entrants if conditions are not satisfying or in case of any general evacuation is initiated, contact rescue personnel if necessary, etc.   

10.    Give some examples of confined space? 

          Pipes, Vessels, Tanks, Boilers and Tube areas, Silos, Trenches and excavations deeper than 4 feet, Sludge pits, Duct works, etc. 

11.    Name one hazardous job in a confined space? 

         Welding, Grinding, Chemical cleaning, Use of gas cutting set, Erection of materials. 

12.    Who is a competent person?

          Is one who is properly trained and authorized to perform a specific work in safe manner. 

13.    What is an accident? 

          An accident is an uncontrolled event that results in undesirable consequences to personnel (injury / illness) or the assets (damage / loss) to the environment. 

14.    What is a near miss? 

          A potential hazard, which has not yet caused an accident or An occurrence that did not result in but have the potential to result in undesirable consequences to personnel (illness / injury) and or to the assets (damage / loss) or to  the neighboring community and environment. 

15.    Who makes an accident report?

          Concerned area supervisor or site safety representative. 

16.     Who makes an accident investigation report?

          A team of front line supervisor, HSE manager, sub- contractor representative if sub- contractor personnel are injured, High officials- depending upon the severity of the accident. 

17.    What is use of an accident investigation report? 

          To find out root cause of the accident, make recommendations to prevent reoccurrence and evaluate the effectiveness of emergency response.  

18.   What is waste management? 

        Waste management means safely disposing the by-product of a process or a work to the environment (after proper treatment, if necessary) so that no threat for livings, properties and environment exists.  

19.    What is MSDS?

         Materiel safety data sheet is the document prepared by the manufacturer giving- Product name, Producer’s address, Emergency contact phone number, Information of ingredients, Possible hazards, First-Aid measures, Precautions to be taken for storage and handling (recommended PPEs, extinguishers), Physical and Chemical properties, etc.  

20.    What is an Isotope?

          Isotope means one or more species of atoms having same atomic number but different mass number. Isotopes can be stable or unstable. Radioactive isotopes are unstable substances, which emits heavy particles (alpha and beta) and higher energy electromagnetic waves (Gama) from their nucleus by decay. 

21.   Why is an Isotope hazardous?

         Isotopes are hazardous because it emits uncontrolled energy in the form of radio active waves which is hazardous to all living thing as it can destroy the its living tissues that causes fatality or can convert it in to cancer. 

22.    What is Radio activity?

          Radio activity is the spontaneous disintegration of atomic nuclei. The nucleus emits ALPHA particles, BETA particles, GAMA particles or electromagnetic rays during this process.  

23.    What is the unit for measuring radiation?

          Micro Sivert or milli- Rem. 

24.    In what condition a work permit can be issued for Radiography? 

         The controlled area is calculated, evacuated and barricaded with Yellow/Black tapes, warning signs (a minimum of 4 no’s), and Red or Yellow flash lights. 

25.    What are the safety measures to be taken while doing Radiography? 

          Ensure a competent person is surveying outside the barricaded area with survey meter. The crew is authorized and following safety precautions. The controlled area is calculated, evacuated and barricaded with Yellow/Black tapes, warning signs (a minimum 4 no’s) and Red or Yellow flash lights. 

26.    What is the controlled area? 

         Any area where the radiation does is more than 0.75 mRem/h (7.5 micro sivert) 

27.    What is a Gieger meter? 

          It is the instrument used to measure the radiation dose (Radiation survey 

28.     What is the use of a film badge?

          This badge will be worn by the personnel, exposed to radiation due their nature of duty and this is processed to calculate the received radiation dose of a person during the period (normally one month) of exposure. 

29.      What is decay chart?

            It is the chart showing the change in radioactivity of a source, for a period, at regular interval of time. 

30.     Who is an authorized exposed Person? 

          He is one who got formal training in the use of sealed source and X-Ray equipment used in Industrial Radiography.

31.    What are the requirements of Man Basket?

          It should be designed and fabricated according to standards, have third party certificate, two guide ropes, damage free lifting gears, the load bearing capacity should be written on man basket, shackles with cotter pin only be used. 

32.    How are slings Inspected? 

        All slings must be inspected before every use and periodically it should be inspected thoroughly and shall be rejected, if found wear of the one third the original outside diameter of outside individual wires, Severe corrosion, Distortion (Kinking, crushing, bird caging…). Broken wires(a maximum of 10 randomly distributed broken wires in one rope lay or 5 broken wires in one strand in one rope lay), Heat damage (loss of internal lubricant by over heat exposure), Pulled eye splices (any evidence that eye splices have been slipped, sleeves damaged), Deformation of wires and strands or pushed out of their original position and sthe sling should be clean from dirt and rust. Before use the slings has to be colour coded as per the month colour code. 

33.    What are the requirements for a crane lifting? 

         Crane position on firm and level ground with wood pads and steel plates. Outriggers are fully extended tires are off ground, Certified Operators and riggers are available safe load indicator is working and check list is filled by competent person, Crane has valid inspection sticker , Insurance and third Party Certificate. The load’s weight is confirmed and is within the safe working limit of the crane. Safety Devices are not by passed, The swing arm radius barricaded and unauthorized persons are evacuated, The lifting tools free from defect pads are use to protect the slings from load and vice-versa, Wind speed is less than 32 Km/hr., approved lifting plan is available for critical lifts, permit for the activity obtained, crane Operator’s and Rigger’s vision is not obstructed, the load is well balance and tag lines are used to control the weight etc. 

34.    What is working Radius? 

         It is the maximum distance where the crane boom has to reach for lifting or lowering the load. 

35.    What is SWL?

          Safe Working Load is the maximum load that can be applied to the lifting tool, safely.  

36.    What is lifting Plan? 

          It is the document prepared for planning critical lift by calculating and considering all factors which is going to effect the lifting and thereby selecting the correct tools and cranes and ensure safe lifting procedure to be followed for a particular lift, giving details such as the size and weight of the object to be lifted, which crane is used for lifting and what the safety factor is, where the crane is positioned, from where the load is lifted, where it is fitted, size and SWL of each lifting tool is used JSA and load chart are attached with it. 

37.     What is excavation? 

          A man made cut, cavity, trench or depression formed by earth removal. 

38.    What is Trench? 

          A narrow excavation where the depth is greater than width. than width.  

39.    What is Shoring? 

         A structure that supports the sides of an excavation and protects against cave ins. 

40.   What is the difference between flash back arrestor and check valve?   

        A check valve allows flow in one direction only. This prevents oxygen reaching acetylene cylinder and acetylene reaching oxygen cylinder in the event of blockage in the torch or line or pressure variations.   

41.    What are the classes of fire and what type of extinguishers are used for them? 

                     Class A:                        Ordinary combustible materials 

                     Eg:-                               Paper, Wood , Cloth, Plastic, Rubber

                     Extinguisher:-            Water, DCP ,Foam, CO2,Halon.. 

                     Class B:                        Combustible liquids and greases… 

                     Eg:-                              Gasoline, Diesel, Oil, Grease, Oil based Paint, Tar.                                                   Extinguisher:-             Co2/Foam/DCP 

                     Class C:-                       Energized Electrical Equipment

                     Eg:-                               DCP, FM 200, Halon, Carbon dioxide. 

                     Class D:-                       Combustible Metals 

                     Eg:-                               Magnesium, Potassium, Zinc, Calcium, Sodium, Titaniu                                        Extinguisher:-            Metal X Type, Combustible metal type,   

42.    What are the responsibilities of Fire Watch?  

          Fire watch is a person designed to identify and eliminate fire hazards, alert and extinguish fire in case of any outbreak of fire and to protect the person and properties from a fire. He is the man to react first by keeping a close watch on such hazardous areas. 

43.    What is Color Coding System? 

          This is the system followed to inspect and ensure the serviceability of tools, equipment periodically (normally it is monthly) like fire extinguishers, full body harness, lifting gears electrical codes and cables, power tools, etc., These things are inspected by competent person and are indicated by putting the colour of particular month.(The colour is decided in advance and it is being used by all persons in site). The items which are found defective and unserviceable will not be colour coded and has to be removed from service. 

44.    Who can Color Code?

          Competent Person. 

45.     What is the maximum distance between two adjacent access in along excavation?

           A ladder must be present within 25 feet, of employees working in excavation. In open excavation - At every 30m on the perimeter, if less than 1.2m deep. At every 7.5m on the perimeter, if more than 1.2m deep. 

46.     When an excavation is considered as Confined Space? 

          If the depth is more than 1.2 m

 47.    Who can erect a scaffolding? 

          Certified Scaffolder. 

48.     Who can inspect the components used for erecting a scaffold? 

          A Competent and Certified Scaffolding Supervisor 

49.    What is Tag System? 

         A Tag is put on scaffolding, by a competent person, indicating the present condition whether it can be used and whether fall protection needed or not. 

50.    Who can place a Scaffold Tag? 

          Competent Person (Scaffolding Supervisor) 

51.     What are the details in a scaffold tag? 

           Location, Maximum loading capacity (kN/m2 or psf)date erected and date inspected with Foreman Name and Signature

52.     In which conditions a scaffold cannot be erected?

          Extreme weather(Strong wind, rain, Ice), ground not stable, safe clearance (minimum feet) can’t be maintained with live wire, certified workers and supervisor are not available permit is available. 

53.     What is the minimum overlapping of two adjacent planks in a scaffold platform?                 Not less than 12”  

54.      What is guard rail system? 

           A barrier consisting of top rails, mid rails, toe boards, and vertical uprights erected prevent men and materials falling from an elevated work area. 

55.     What is a toe-board?

           Barrier secured along the sides and ends of a platform to guard against falling of materials, tools, and other objects. 

56.     What is the minimum height of toe-board?

          4 inches 

57.     What is the height of the top-rail from the platform? 

           38 to 45 inches. 

58.     What are the requirements in placing an access ladder on a scaffold? 

          Provide access when scaffold platforms are more than 2 feet above or below a point of access

When using ladders, bottom rung must not be more than 24 inches high. Ladder to be at the correct (i.e.1 feet for every 4 feet in height). Ladders are to be tied at both sides not by the rungs. Make sure the ladder extends a safe distance (at least 90 cm) above the landing stage. When the horizontal travel distance exceeds 15 Mtrs provide at least two accesses. If the platform is longer, access shall be provided at every 30 meters. The ladders should be free from damage and should be colour coded. All access ladders must be tagged. 

59.     In what circumstances fall protection system has to be used?

          If a person could fall more than 1.8 meters then fall protection system should be used. 

E.g. - Any activity at an elevation more than 1.8 meters such as erection, dismantling or maintenance of scaffolding, pipes, equipments,… 

60.     What is the minimum width required for a walk-way in scaffolding? 

          Minimum width of a walk way is 18 inches’’. 

61.     What materials can be placed on a scaffold platform? 

          All types of construction materials which is used for particular construction activity can be kept on scaffolding platform but before keeping the materials and tools required for the work on the platform, we must ensure load bearing capacity of that scaffolding platform. The platform shall not be overload and shall be fitted with falling object protection system like toe board, nets etc. 

62.     What are the requirements for working on a moving scaffold?

          Mobile scaffolding shall be plumb, level and square. It shall only be used and moved on surfaces sufficiently firm and level to ensure stability. It shall be moved only by manually pushing or pulling the base. No men, equipment or materials shall be on the working platform or elsewhere on the scaffolding while it is in motion. Castors shall be locked at all times except during scaffold movement. The temporary foundation or track set on uneven ground for scaffold movement shall be level and properly secured. The height of the working platform shall not exceed 4 times of the minimum base dimension. If it exceeds this limit outriggers must be installed. A complete guard rail system must be provided. The scaffolding shall be inspected and tagged before use by a competent person. 

63.     When should we inspect a scaffold? 

          A Scaffolding shall be inspected and tagged after completing erection. Also before each work period or where they are altered, adjusted or subjected to rain or heavy winds. Thereafter the scaffolding shall be examined at least once in every seven days.  

64.     With what color a ladder can be painted? 

          Aluminum ladders and wooden ladders shall not be painted. 

 65.    What is a life-line? 

           Life line is component that consists of a flexible line that connects to an anchorage at one end to hang vertically or that connects to anchorages at both ends to stretch horizontally and which serves as a method to connect other component of a personnel fall arrest system to the anchorage. 

66.    How can we calculate the safe anchorage of a life-line?

         When life line is used they shall be fastened to fixed safe points of anchorage capable of supporting 2300 Kgs. shall be independent, and shall be protected from  

sharp edges and abrasion. Safe anchorage points may include structural members (minimum 4’’structural member or 4’’ pipes) but do not include guard rails, vents, other small dia piping systems, electrical conduit, outrigger beams or counter weights. It shall be maid from 10mm dia wire ropes. Horizontal lifelines shall be installed at the highest feasible point, preferably above shoulder height. This life lines shall be maintained with unloaded sag at the centre no greater than 30cm (12 Inch) for every 10 meters of lifeline length between attachments points.

67.     What is lock-out/Tag-out system? 

           For servicing or maintenance of live equipments or pipe lines, where the unexpected energizing or release of energy could cause injury, lock and tag are placed on the isolating device to avoid uncontrolled operation and give details of the lock-out schedule.  

68.    Expand the following:-          

              STARRT:-              Safety Task and Risk Reduction Talk   

              COSHH:-               Control of substance Hazardous to Health 

                OSHA   :-               Occupational Safety and health Administration 

               OHSAS:-               Occupational Health and Safety Assessment Series. 

                 ELCB:-                  Ground Fault Circuit Interrupter 

                 GFCI :-                  Earth Leakage Circuit Breaker 

                  BS:-                      British Standards Institute

               SWL:-                   Safe Working Load 

                 ANSI:-                  American National Standard Institute Lost Time Incident 

               LTI:-                     Lost Time Incident 

                ASTM:-               American Society for Testing and Materials

                 JSA:-                     Job Safety Analysis 

                   LEL:-                 Lower Explosive Limit                                                                                                 UEL   :-             Upper Explosive Limit 

                    PEL:-             Permissible Exposure Limit 

                    REL:-               Recommended Exposure limit 

                     PSI:-             Pounds / Square Inch (1 Bar = 14.7 psi) 

                     STEL:-            Short Term Exposure Limit 

                     WBGT:-        Wet Bulb Globe Temperature 

                      APR-             Air Purifying Respirator 

                      SCBA-  - Self Contained Breathing Apparatus 

                       RSO