...Solutions Engineering - Oil . Gas . Power . Systems

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11
Click to View Last Week's Winner / QUIZ OF THE WEEK: Week 19 Winner Announcement
« Last post by ffadmin on December 23, 2015, 08:39:33 AM »
Week of December 15 - December 22, 2015 Quiz Winner: Enwose.

No member met the target 100% score. However, the highest score of 3.2 out of 4, approximately 80% was by Enwose. He is awarded 100% of the week's $50 cash prize.

The target remains Excellence.
12
Click to View Last Week's Winner / QUIZ OF THE WEEK: Week 18 Winner Announcement
« Last post by ffadmin on December 16, 2015, 08:25:21 AM »
Week of December 08 - December 14, 2015 Quiz Winner: Vintus12.

The highest score of 4 out of 4, 100% was by Vintus12. He is awarded 100% of the week's $50 cash prize!!!


"Excellence is the gradual result of always striving to do better." - PAT RILEY
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Click to View This Week's Quiz / Week 19: Questions for $50!
« Last post by ffadmin on December 15, 2015, 09:58:14 AM »
1.   Determine the crude oil viscosity using Beggs-Robinson equation for a crude oil of API 420 at a flowing temperature of 750F.



2.   A gas is measured at standard condition (600F) to be 13MMCFD.  What is the actual volumetric flow rate of the gas at 1000F and pressure of 2psig? (Use Z = 0.91)



3.   Which of the under listed separator sizes violates ASME vessel code guidelines?
A.   36’’(O.D) x 10’ (S/S) – Vertical Separator
B.   60’’(O.D) x 20’ (S/S) – Horizontal Separator
C.   72’’(O.D) x 20’ (S/S) –  Horizontal Separator
D.   42’’(O.D) x 30’ (S/S) –  Vertical Separator
E.   24’’ (O.D) x  12’ (S/S) – Vertical Separator



4.   A natural gas of S.G 0.65 at a flow rate of 20MMSCFD flows through a 16inch SCH-80 ASTM 106 Grade B carbon steel pipe at inlet pressure of 200psig and temperature of 770F. Determine the Reynold’s number and friction factor (either by moody chart or Swamee-Jain equation). (Take roughness for carbon steel pipe as 0.0018inch, gas viscosity = 0.0013cp, Z = 0.9)




Submission Deadline Expired!


14
Click to View Last Week's Winner / QUIZ OF THE WEEK: Week 17 Winner Announcement
« Last post by ffadmin on December 09, 2015, 05:10:42 AM »
Week of November 30 - December 07, 2015 Quiz Winner: Enwose.

No member met the target 100% score. However, the highest score of 2.2 out of 4, approximately 55% was by Enwose. He is awarded 50% of the week's $50 cash prize ($25).

The target remains Excellence.
15
Click to View This Week's Quiz / Week 18: Questions for $50
« Last post by ffadmin on December 08, 2015, 03:54:29 AM »
1.   Stabilized Crude oil with specific gravity of 0.82 and Kinematic viscosity of 4.1 Centistoke is flowing through a 6-inch S-40 pipe, 12.5km long at the rate of 230 GPM. Calculate the pressure drop across the entire length of the pipe.



2.   A natural gas mixture consists of the following components;
  • Methane (C1) = 75%
  • Ethane (C2) = 16%
  • Propane (C3) = 9%
Determine the specific gravity and average molecular weight of the natural gas mixture.



3.   Using the CNGA equation, determine the compressibility factor of natural gas of specific gravity, 0.65 with average pressure of 500psig and gas temperature of 800F.



4.   A natural gas pipeline made of API 5L X42 14 - inch pipe (wall thickness of 0.5 inch) is 200km long. The inlet pressure is 90bar absolute, the outlet pressure is 20bar absolute and the average temperature is 250F. The gas consists of the following components;
  • Methane (CH4) = 78%
  • Ethane (C2H6) = 19%
  • Propane (C3H8) = 3%
Calculate the flow rate in Million cubic meter/day and MMSCFD using Weymouth and Panhandle B equations. (Use Z = 0.85 and E = 1.0)




Submission Deadline Expired!!!


16
Click to View Last Week's Winner / QUIZ OF THE WEEK: Week 16 Winner Announcement
« Last post by ffadmin on December 02, 2015, 04:35:03 AM »
Week of November 22 - November 28, 2015 Quiz Winner: Vintus12.

No member met the target 100% score. However, the highest score of 3 out of 4, was by Vintus12. He is awarded 100% of the week's $50 cash prize.

The target remains Excellence.
17
Click to View This Week's Quiz / Week 17: Questions for $50!
« Last post by ffadmin on December 02, 2015, 03:12:28 AM »
1.   Evaluate the fluid release (leak) mass flow rate through a 5mm hole when crude oil of API 40 DEG is flowing through a 6-inch S-40 pipe.  (The gauge pressure is 140psig and orifice discharge coefficient Co = 0.70)



2.   A flow rate of 28,500 BOPD (Barrels of Oil Per Day) of API 40 DEG, dynamic viscosity of 5cp of crude oil is required at the delivery point, 5km away from the source Oil storage tank.  The vertical elevation of the delivery point is 80m higher than the centre-line nozzle of the storage tank outlet nozzle. The pressure head available at the source is 150m and the required pressure at the delivery point is 50 psig. What nominal pipe diameter would you recommend for this service? Give reasons for your selection (use f = 0.002).



3.   Crude oil of API 35 DEG, at 75F flows through and 8-inch, Sch 40 pipe at the rate of 300 gpm. Calculate the flow velocity in the pipe.



4.   In a 10km pipeline system, crude oil of API 38 DEG at 80 DEG Fahrenheit flows through ASTM A 106-GrB, 4-inch S-40 pipe at the flow rate of 50,000BPD. Is the selected pipe suitable for the operation? YES/NO : Give justification for your answer.




Submission Deadline Expired!!!

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Click to View This Week's Quiz / Week 16: Questions for $50!
« Last post by ffadmin on November 25, 2015, 06:27:20 AM »
1.   A pump operating at 1800 RPM delivers 200 gpm at a TDH of 150 feet and BHP of 10 HP to operate.  What will be the flow rate Q, TDH (Total Delivery Head) and BHP(Break Horse Power) conditions if the speed changes to 3600 RPM ?



2.   A natural gas of S.G 0.65 at a flow rate of 15MMSCFD flows through a 12inch SCH-80 carbon steel pipe at inlet pressure of 29psi and temperature of 770F and viscosity of 0.013cp. Determine the erosional velocity and average flowing gas velocity. (use C = 100, Z = 1)



3.   Calculate the pipe friction loss in a 3’’ SCH 40 ASTM 106 , Grade B Carbon steel pipe with a flow rate of 149 gpm for crude at 80F and a pipe length of 1,000m. The pipe roughness is 0.00015 ft and the viscosity is 1.13 cSt. The crude oil is of API 400



4.   A reciprocating(Positive Displacement) pump has the following characteristics:
              Pump Head = 2460 ft of head
              Stroke length = 7.125inch
              Speed of revolution = 200rpm
              Plunger diameter = 5.25inch
If this pump is to be used to deliver a crude oil of S.G 0.84 at the flow rate of 20,000 BOPD through 10’’ ASTM A106 Gr B pipe, determine the pump mean plunger speed and NPSH required for the pump to operate.



Submission Deadline Expired!

19
Well, from my point of view, we are all to blame; The Government, citizens and yes tribalism.

Blame Apportioning;

The Government: First, the government has in not made any major efforts in trying to develop the country technologically, most of the tech advancements are brought about by private firms whose major aim is to make profit. The government is required to create an enabling environment for its citizens and investors (i.e. first of all provide basic amenities; light, water, good roads, proper health care).

if investors have the basic needs met then they can train the citizens in tech related education and have them employed to work instead of importing most of their tools and equipment.

Also, the insatiable thirst for wealth has lead the government to corruption, as officials are willing to take bribes so as to look the other way when investor are looting the nation of her wealth.

The Citizen:
Now we all are familiar with the saying "Think not what Nigeria / Government can do for you, think of what you can do for Nigeria/ the Government". this saying basically tells Nigerians to go to work in creating and idealizing.

Most youth these days are looking for routes to riches that they don't want to bother with proper education. this type of attitude reduces the amount of brain power required for tech advancement.

Also, those interested are either trying to make ends meet or discouraged by people who think it is a waste of time and don't believe anything good can come out of the country.

Education System:
The Nigerian education system and the educators have become so archaic that both cannot be compared to their counterparts in the western world or even in other countries with economies like ours.

the curriculum run by the education system in the country does very little to expose young Nigerians to technology, and even when it does, it puts the old technology on a silver platter and due to negligence on the pat of most educators, abandons newer advancements in technology.

If children are exposed to tech education at a tender age, it help them build a healthy interest in technology and what it stands for.

Tribalism: As awkward as it may sound, tribalism also has a portion of blame to it. the amalgamation of Northern and Southern Nigeria is celebrated this year as a major Landmark in the nations history, but it seems that even after a hundred years, only the lands are called one. The disunity of Nigerians has brought about much quarrel, squabble, and altogether lack of peace.

Two people can only move together if the have a common goal without resentments. The struggle for power by different tribes within the country has made it almost impossible for the nation to move forward as there is usually lack of continuity in the government after a new government comes into power.

These are a little of the different blames that we as Nigerians share. No one entity is to blame... we all are. Thank you.
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Students and their parents, not teachers are responsible for the falling standard of education in Nigeria.
The acquisition of educational degrees and certificates used to be the aim of every student and this usually was backed up with the support of parents. As a result of this, the standard of education in Nigeria was kept high and this was beneficial to both parents and students. The quest for quick wealth coupled with laziness has disrupted our educational system in the sense that students find it difficult to learn properly. To worsen the situation, parents now give support to their lazy and less-determined children. These children now choose to travel abroad for greener pastures that are not actually green, thereby leaving the schools for lizards and rats to inhabit. This has over the time posed a form of discouragement to the willing teachers, and it has led to the fall our educational standards. I believe that the fault does not come from the teachers because they have nothing to gain from teaching other than their salaries.
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