Saturday, 14 August 2021

Happy Independence Day

Happy Independence Day

 SoNu SiNgH Wishing You All Happy Independence Day


"तिरंगा ही आन है, तिरंगा ही शान है, और तिरंगा ही हम हिंदुस्तानियों की पहचान है। - स्वतंत्रता दिवस की हार्दिक शुभकामनाएं"


We all are so different, but there is one thing that unites us and it’s independence. We should honor it and never forget how hard it was to get it. Enjoy this beautiful Independence Day


Saturday, 6 June 2020

Maintenance of Fin-Fan Air Cooler

Maintenance of Fin-Fan Air Cooler in Refinery

In this topic today, we will clear how the fin fan air cooler maintenance are done so that we will disburse in step by step detail.

Fin Fan Air Cooler


Arrangement Before start work


1. To sabse Pahle aapke pass Work permit honi chahiye

2. Apke pass proper tools hone chahiye

3. Apko proper PPE jarur istemal karna chahiye aapke safety ke liye.

4. Aur aaj ham baat kar rhe h fin-fan ke maintenance ki to ye kaam hame height per rah kar karna hota hai to Safety harness ka upyog jarur kare.

5. Jarurat ke hisab se scaffolding erection jarur kra le

6. Equipment me koi fluid ho ya pressure ho to use bhi drain or release kar le.

7. Aur sabse khas  baat ki Blind list ke aadhar per inlet or outlet ka blinding kar le yaani ki equipment ka positive isolation kaam shuru karne se pahle jarur kar le.


watch video of Fin-Fan Maintenance

Let’s Start Steps by Step Maintenance


1. Remove the plugs using torque wrench. ( Do not use hammer ring spanners and other hammering methods to remove the plugs because that will damage the threads )

2. Remove the old gasket rings without damaging the gasket area.

3. Now offer to inspection team for preliminary inspection.

4. Fix hydro jet water collection trays.

5. Now hydro jet the tubes.

6. After hydro jetting air clean the tubes.

7. Offer for Inspection

8. If ok, clean the gasket area good without damage.

9. Check the thread for any damage.

10. Clean the plugs good and check the threads.

11. Fix the plug with new gasket.

12. Tight plugs by torque wrench to required value.

13. Now fill the water and Hydro Test.

14. Identify leaks through Tubes/Plugs.

15. If no leak offer for inspection to the team.

16. Now drain the water and de-Blind.

17. Finally make good housekeeping and work safely.

Question Answer

Questios No1- What are the types of gaskets used in the fin-fan cooler plugs and material of construction?

Ans- Ring type gaskets are used and material of construction is soft iron, aluminium, stainless steel  and alloy.

Questio No2- What are the size of plugs used in fin-fan cooler?

Ans- 1 1/8 (28.5 mm) is the normal size. But 1 ¼(31.75=32 mm) and 1 3/8 (34.9=36 mm) plugs are also used. 

Thursday, 4 June 2020

Types of fire and fire extinguisher | Types of fire extinguisher in Hindi | Classification of Fire Extinguishers in Hindi

Types of Fire and Fire Extinguisher

Types of Fire and Fire Extinguisher




Today we will discuss deeply about Fire, Types of Fire and Fire Extinguisher and cover three topics about fire which are given below as…

For Download PDF please click on link which is given below ( PDF डाउनलोड करने  

के लिए इस पोस्ट नीचे लिंक  दिया गया है जहाँ से आप डाउनलोड कर सकते हैं )

Fire



1. Fire Definition

2. Types of Fire or Class of Fire

3. Types of Fire Extinguisher




Ø Fire – Fire is a chemical reaction or a process of bonding in which fuel is ignited in the presence oxygen and heat and typically gives off light, heat, flame and smoke.


Fuel + Oxygen + Heat = Fire


Fire Triangle



Let Us See How Fire Occur


Ø There must be 3 elements present.

Ø These elements include Oxygen, Heat and Fuel.

Ø When all 3 of these elements come together it creates a chemical reaction which causes fire.

Ø In order to put out a fire, you need to remove one or more of these elements.

Types of Fire 

Types of Fire

 


v Fire is mainly divided into six categories or we can say Class.


 

1.  Class A

2.  Class B

3.  Class C

4.  Class D

5.  Class E

6.  Class F


Ø      Class A Fire - If a fire occurs in a solid material, then we call it class A fire such as wood, Paper, Textiles, Fiber, Coal, Rubber, Plastic etc.


Fire Class A




Ø      Class B Fire - If a fire occurs in a flammable liquids, then we call it class B fire such as petrol, diesel, oil, paints etc.

Fire Class B
 


Ø      Class C Fire - If a fire occurs in a flammable gases, then we call it class C fire such as Methane, Propane, Butane etc.

 

Fire Class C


Ø      Class D Fire - If a fire occurs in metals due to overheat, then we call it class D fire such as aluminum, magnesium, etc.

 

Fire Class D


Ø      Class E Fire - If a fire occurs in electrically energized equipments, then we call it class E fire or Electrical Fire.


Fire Class E


Note :- Fires that involve electrical energized equipments are designated “class C” under the American system and “class E” under the European/Australian Systems.

 

Ø      Class F Fire - If a fire occurs in cooking oils or in fats then it is called  Class F Fire, we can simply say as a Kitchen Fire.


Fire Class F


Note :- Fires that involve cooking oils or fats are designated “class K” under the American system and “class F” under the European/Australian Systems.

 I hope… it is cleared now about types of fire so let’s talk about types of fire extinguisher     


Different Fire Extinguisher Types and Uses

 

As you review the fire extinguisher guide below, it's important to understand two things.  

 

Ø  First, different types of fire extinguishers are designed to fight a different classes or ratings of fire.

Ø Second, each fire extinguisher type works by removing a particular element from the fire equation.

 

 

Ø Water type fire extinguishers -  Work by attacking the heat element of the fire equation. Water extinguishers should only be used on class ( A ) fires that involve ordinary materials like paper, wood, fiber and coal.


water fire extinguisher


Ø Foam fire extinguishers - Work by removing the heat and oxygen elements of the fire equation. This type of fire extinguisher should only be used on class ( A ) and ( B ) fires and should never be used on class ( E ) electrical fires due to electrocution hazard.


Foam Fire Extinguisher



Ø CO2 or Carbon Dioxide fire extinguishers - Work by attacking the oxygen in a fire. They also work to remove heat due to a very cold discharge. CO2 fire extinguishers should only be used on class (C) electrical fires and class (B) combustible liquid fire.


Co2 Fire Extinguisher



Ø DCP ( Dry chemical Powder fire extinguishers ) –Primarily work by interrupting the chemical reaction of a fire. A very versatile fire extinguisher, these are rated to be effective on class A, B and C fires. Since A-B-C fires are the most common, dry chemical fire extinguishers are the most widely used in home fire situations.   


ABC Fire Extinguisher



Ø  Wet chemical fire extinguishers - Work by first removing the heat element of a fire and then preventing re-ignition by creating a barrier between the oxygen and fuel elements. This classification of fire extinguisher was specifically developed for class  ( F ) fires that involve cooking oils and fats. Most often these fires occur in commercial restaurants and cafeteria settings. 


wet chemical fire extinguisher


Ø Dry powder fire extinguishers - work by separating the fuel from the oxygen of a fire. These are only for use in class ( D ) fires that involve combustible metals like magnesium, titanium, potassium and sodium.

The powder agent used may be powdered graphite, granular sodium chloride or copper based, all of which are effective at separating the fuel (the ignited combustible metal) from the oxygen. 


Ø Which fire extinguisher classification is right for you?

 

Ø As you can see, each class of fire requires a certain type of fire extinguisher to fight it. For most people, a dry chemical A-B-C rated fire extinguisher is going to be the best unit to have around the home, car or workplace.

 

Ø For others in a more specialized environment, a different type of fire extinguisher will be needed for effective firefighting. 


For Download PDF of Types of Fire and Fire Extinguisher Click Here

( डाउनलोड करने  के लिए इस लिंक  पर क्लिक करें )






Sunday, 31 May 2020

General Fitter Question Answer | General Fitter Work | General fitter work details | General fitter interview questions in Hindi

General Fitter Interview Question Answer

General Fitter is responsible for all the maintenance regarding works in Refinery. So basically General Fitter , Mechanical Fitter and Mechanical Technician all the three category having almost same job profile so during client interview same questions will be asked in all the three category.
In this video we have explained all the question answer which is being asked during client interviews so without skipping go through the full article and come to know about all the question answer for sure selection in any gulf countries for all these three General Fitter, Mechanical Fitter and Mechanical Technician trades.

General Fitter Question Answer

जनरल फिटर क्वेश्चन आंसर के PDF का लिंक  नीचे दिया गया है वहाँ से डाउनलोड कर लीजिये 

PDF link of General Fitter Question Answer Given Below, You Can Download There.


Questions Related To Safety:


1. What is the expansion of PPE ?

Ans: Personnel protective equipment.


2. List out the PPE’s ?

Ans: Safety shoes, coverall or Boiler Suite, safety goggles, helmet, ear plug and hand gloves.

List of PPE


3. What is the Expansion of HSE ?

Ans: Health Safety and Environment.

 

4. What is the expansion of SCBA ?

Ans: Self-contained berating apparatus.

SCBA


5. Who can enter in to the  vessel, tower, heaters or tanks ?

Ans: Valid & authorized confined space entry holder.

 

6. Who can work as attendant for confined space entry?

Ans: Valid & Authorized confined space entry holder.

 

7. What is the meaning of housekeeping?

Ans: To remove unwanted materials from plant operating area.

 

Housekeeping

8. When  you will use safety belt or safety harness ?

Ans: Working at height.

safety harness

9. What is  the main thing required to start the job?

Ans: Permit and SMT instruction.

Work Permit

10. In case of any HC leak or fire what will be your first action?

Ans: Inform to SMT ( Supervisor of Maintenance ) immediately.

 

11.   What  are the things need to be checked before working on scaffold?

 Ans: Green tag & Expiry date.


 

                                  

Questions Related To Equipment:

 

 

 1. List out the equipment on which you have worked ?

Ans: Heat exchanger, vessels, Distillation towers, Tanks, Heaters or Furnace, filters and Fin fan coolers, Cooling Towers, Reactors

Static Equipment


 2. List out  any two type of pipe fitting?

 Ans: Flange, elbow, nipple, coupling ,Tee , reducer.

Pipe Fittings


 3. List out any two type of valves?

 Ans: Gate valve, Globe valve, Butterfly valve, plug valve, ball valve and needle valve, Non Return Valve, Control Valve

Valves Question Answer


4. In which equipment trays were fitted?

 Ans: Distillation Tower ( Column )

Distillation Column
Distillation Column



5. List out at least two type of trays used in towers?

Ans: Valve trays, bubble cap, Chimney tray and sieve trays.



6. In which equipment demister pad is fitted?

 Ans: Vessels and Towers.


7. List out any two type of flange joint gasket?

 Ans:  Spiral wound metallic gasket, Graphite gasket Teflon, Rubber gasket and RTJ- Ring Type Joint  gasket ( Oval or Octagonal)

Gasket
Gasket


8. What is  the expansion of DP?

 Ans: Dia penetrate test


9. Which liquid  is being used for hydro test?

 Ans: Water


10. Which gas is being used for pneumatic test?

 Ans: Nitrogen


11. What is the expansion of NRV?

 Ans: Non-Return Valve

NRV
Non-Return Valve


12. What is the expansion  of PSV and PRV?

 Ans: PSV- Pressure safety valve & PRV- Pressure Relief Valve

PSV and PRV
PSV and PRV




13. List out the fastener types?

Ans: Bolt & Nuts, Stud bolts and Allen head bolts

Machine Bolt and Stud Bolt


14. List out  any two  type of blinds?

Ans: Spade blind, End blind and Modified blind.

Types of Blind




15. List out any two type of Pipe materials?

Ans: Carbon Steel, Alloy Steel and Stainless Steel.

 

 

 

 

                                

Questions Related To Tools / Units :

 

 

 

1. List out the two common type of tools?

Answer: Open end spanner, Ring spanner, Combination spanner, sledging spanner (Hammering spanner) and pipe wrench, Adjustable spanner and screw driver.

Tools
Tools used in Refinery




2. List out the measuring tools?

Ans: Scale, Measuring tape, sprit leveler , Vernier caliper and Micrometer.


3. What  type of hammer material  should  be used in refinery?

Ans:  Brass


4. What type of Buffing wheel material should be used in Refinery?

 Answer: Brass

Buffing Wheel
Buffing Wheel


5. Why we use pressure gauge?

Ans: To know the pressure

Pressure Guage
Pressure Gauge


6. What is the unit of pressure?

Ans: Pounds per square inch (PSIG) or KG/ SQ.CM


7. What is impact wrench?

Ans: Used for tightening and loosening of bolt’s nut.

Impact Wrench
Impact Wrench


8. Impact wrench operated by which gas?

Ans: Driven by air


9. Which equipment is  required for ventilation of vessel and towers?

Ans: Exhaust fan or Ejector

Venturi Eductor
Venturi Eductor

Exhaust Fan
Exhaust Fan



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