Fun and money

Ahh the glitter and glamour of the advertisement from the manufacturer. Does anybody actually believe it? It all began when a local vendor call you up because the regional sales manager just came into the town, to demonstrate their newest smart microprocessor based equipment.

They will give you the catalogs which are just collection of pictures and buzz words complete with 32 digits model number that completely describe the off the shelf version. Eventhough the catalogs are enourmous, they don't give enough information to determine whether the instruments will fit your application.

Vendors have a different outlook on the job. They are not worries of whether an instrument will actually work. Because they are rarely get out into the field. Since very little data is ever gathered on the actual performance of instruments. Any problem relayed js usually discounted as being caused by poor installation.

Most of my pictures were deleted by imageshack

First, I would like to say I am sorry for the inconvenience. It had been years since the last time I checked the my blog and I've just realized that most of the schematic pictures on my blog had been deleted by imageshack.

Well, the joke's on me to put a lot of my pictures on free image hosting website and not making a backup files for those pictures. I dont think I can update all of those pictures that were missing on my blog. deep down, I feel a deep sense of resentment about this. But what can I do, its their website after all.

Well I guess that's all. Cheers

The not so bright engineer

Some where along the line, After gone on numerous start-ups, worked thousand hours of uncompensate overtime, and had to scrupulously tailor numerous goals so that you can survive the performance reviews. you will be thinking whether you are a successful engineer or not.

The ones left to turn out the lights

In these days of downturn in oil industry and decaying engineering departments. It is interesting to note that the design engineers are considered expendables. The goals of the project, which are fast and cheap installation are increasingly emphasized over the functional and reliable installations.

Birthday and Life Expectancy Calculator

Hi, 

Do you plan to surprise your friends, family or spouse with unique birthday facebook, twitter, whatsapp,or bb message.

Ever wonder how many days you've been alive?

Birthday and Life Expectancy Calculator calculates how long you or your your friends, family, spouse have been alive in years, months, weeks, days, hours, minutes and seconds.

you can share the results on facebook, twitter, whatsapp,bb, .etc

LNG Process

LNG process uses exactly the same principle of our refrigerator or Air conditioning
It has the same basic component and refrigeration cycle.
- Compressors
- Condensers
- Expansion Valves
- Evaporators

 

LNG Plant liquefy ga to minus 160 degC. with 80000 hp compressors and mixture of propane, ethane, methane and nitrogen as an input.

Natural Gas Contaminants

below are list of natural gas contaminants:
- Acid Gases (CO2)

- Acid Gases (Sulphur Compound)
- Mercury (Hg)
- Water (H20)
- Heavy Hydrocarbons (C5+)

Personal savings calculator

Hi,

Currently we are developing mobile personal savings calculator. which can help you  to calculate your personal savings goal target.

Example:

Paul wants to become an millionaire within 10 years period. His current annual salary is $90.000. with $36.000 expense annually. He expect to get an 10 % salary increase a year.  After calculation, he will have $ 540.005 on his savings.

safety design

Pada 23 Maret .2005 jam 1:20 siang, di BP Texas City refinery terjadi ledakan dan api yang mengakibatkan 15 orang meninggal dunia dan menciderai 180 orang dengan kerugian material melebihi $1.5 billion. Insiden terjadi ketika start-up isomerization unit, raffinate splitter tower meluap. Pressure relief device terbuka yang menyebabkan  flammable fluid keluar dari blowdown stack yang tidak dilengkapi dengan flare. Keluarnya fluid ini menyebabkan ledakan dan api. Fatality terjadi di kantor yang dekat lokasinya. 43.000 orang penduduk diperintahkan tetap didalam ruangan dan ledakan mengakibatkan rumah-rumah dalam radius ¾ mile dari refiney rusak.

Differential Pressure Level Transmitter Defect

Every liquid in storage tank will have hydrostatic pressure equal to the height of the liquid. With an assumption that the liquid has constant density. The DP level transmitter indication is a measure of the head pressure in the level of the tank whose level is to be detected. Head Pressure, DP, is calculated as DP = (Height).(Specific Gravity).

For example, let's say  50% level is displayed in the control room, the specified SG = 0.8. The DP transmitter is actually measure a differential pressure (50%)*(0.8) = 40 units of the differential pressure.

Gas Processing Unit Summary

Produced wellhead gas is wet, saturated with heavy hydrocarbons and contained with salt and sand.
Gas Conditioning Unit varies from a small station that handle 10 million SCFD to a big station that process 500 Million SCFD.

Wells scattered throughout the remote regions, and then carried by export line to the processing unit. Liquid are separated from gas. The liquids consist of salt water and condensate. The condensate is collected to oil refinery, where the condensate is blended into gasoline. The water is removed and then injected back into the ground in disposal wells.

The Logic Behind The Magic." Flash Gas Compression"

The condensate separated in the Liquid separator is stabilize by the condensate stabilization unit.
To recover the flash gas from the condensate stabilizer column and overhead of liquid separator, Flash gas compressor is installed for the compressing and recycling the gas to inlet of slug catcher.

Flash gas compressor is horizontal multistage cylinder balanced opposed type reciprocating compressor. These compressors are driven by 160 kW induction motor through a direct rigid coupling.

First, the gas flows to Flash Gas Compressor Scrubber to be scrubbed and condense any liquid from the gas stream.

The gas is then compressed by 1st stage flash gas compressor then the discharge gas cooled down from 116 deg C to 80 degC by 1st stage flash gas after cooler. After that condensed liquid is separated in the 2snd stage flash gas compressor suction scrubber prior compression by 2nd stage flash gas compressor to 48.5 barg. The compressed flash gas is cooled down to 90 degC by 2nd stage flash gas after cooler prior delivering to the slug catcher

The Logic Behind The Magic." Gas Dew Point Control and Metering 3".

Metering

The purpose of the flow metering system is to measure the gas flow for commercial purposes.
Sales gas metering package includes the dollowing:
- Flow Metering system
- Gas Chromatograph
- Miscellaneous component, like isolation valve, tube JB, etc.

One of the options is utilizing senior orifice meter. The flow meter is designed and constructed in accordance for AGA Report No 2. To compesate the flow readings, Pressure and Temperature transmitters are provided on each stream.

The Logic Behind The Magic." Gas Dew Point Control and Metering 3".

Gas Dew Point Control .

The Logic Behind The Magic." Gas Dew Point Control and Metering".

Dry gas from TEG overhead KO drum flows to Gas/Gas Exchanger where it is cooled by Low Temperature Separator overhead stream. The Gas/Gas Exchanger is a special Printed Circuit Heat Exchanger design. The exchanger is protected by strainers in order to avoid oversized particles entering Sales Gas Metering Skid.

The Logic Behind The Magic." Glycol Dehydration System 10"

Glycol Make Up System and Drain Vessel Control

The Logic Behind The Magic." Glycol Dehydration System 9"

Glycol Make Up System and Drain Vessel

Glycol from TEG drain vessel is pumped to TEG storage tank by  TEG Drain Vessel Pump in the drain vessel. The lean glycol in the storage tank is used to make up loss of glycol in the regeneration system. TEG is pumped from the TEG storage Tank to the TEG accumulator vessel by TEG Make up pump. The TEG make up pump operates intermittenly with design capacity 5.5 m3/hr.

The Logic Behind The Magic." Glycol Dehydration System 8"

TEG Vent Exchanger Outlet Temperature Control

The TEG Vent Exchanger outlet temperature is controlled by TC-FC cascade. The outlet temperature is influenced by Heating medium from TEG Reboiler

The Logic Behind The Magic." Glycol Dehydration System 7"

TEG Reboiler
Rich glycol from TEG Still column flows into the shell side of glycol  reboiler. Hotoil comes from hot oil supply header is used as heating medium in reboiler tube side. The renegerated flows by gravity across the length of the TEG reboiler and enters the Stripping gas column operate at 204.4 degC at atmospheric pressure. TEG loss is reduced by increasing the flow of the rich TEG through tube side of TEG reflux condenser.

TEG Vent Exchanger
Water vapour from the shell side of the TEG reflux condenser passes through the shell side of an 8.36 kW double pipe type TEG Vent Exchanger before letting it go to the acid flare system. Water vapour is heated up to 150 degC by the hot oil passing through the tube side of the TEG vent exchanger for this purpose. The temperature of water vapor of the acid flare is controlled by an FC TC cascade control loop.

Stripping Gas Column

 The use of Stripping gas column is provided to reduce the water content of the regenerated glycol by counter current contact with hot fuel gas flowing upward through the stripping gas column. The stripping gas also reduces the partial pressure of the vapour in the TEG reboiler. Hence increasing the regeneration capability of the TEG reboiler. Regenerated glycol flows from the bottom of the stripping gas column by gravity into the hairpin type Hot Lean Rich TEG exchanger where it is cooled to approximately 124.8 degC and then goes into the other haipin type Cold Lean Rich TEG Exchanger where it is further cooled to approximately 85.55 degC.


TEG Accumulation Vessel
Lean glycol from Cold Lean/Rich TEG exchanger is sent to the TEG accumulator vessel. The TEG accumulator vessel is sized for a 22.3 minutes residence time between low-low liquid level and high-high liquid level, of lean glycol at pump maximum capacity (33 USgpm). The TEG accumulatoe vessel provides storage capacity for the TEG circulation pumps.

TEG Circulation Pumps
The TEG circulation pumps are rotary gear type pumps, operating at normal discharge pressure of approximately 52.06 Barg. The lean glycol from the discharge of the TEG circulation pumps is sent to the 235.8 kW TEG cooler,

TEG Cooler
The TEG coller is an air cooler where the lean glycol is cooled to 48.25 degC and sent to the TEG contactor for re-use. 2x5 kW fans are used to cool the lean TEG

The Logic Behind The Magic." Glycol Dehydration System 6"

TEG Regeneration Package Control