CO2 Engineering Portal: October 2011

Monday, 24 October 2011

Condition Monitoring through Vibration in Motors


Vibration
Operation Condition
Less than 0.10 in/sec
Good Operating Condition
Between 0.10 in/sec – 0.20 in/sec
Satisfactory
Between 0.20 in/sec – 0.35 in/sec
Correct to Extend Life
Between 0.35 in/sec – 0.5 in/sec
Un Satisfactory (Mechanical Wear)
Over 0.50 in/sec
Severe wear (Correct as early as possible)



Source: Longo sales and services

Saturday, 22 October 2011

Fabric Testing through Flame


Manufacturing Process of Fabrics

Cotton Fabric

Cotton fiber undergoes several process to reach the stage of final cloth. The processes are as mentioned below:

Ginning
Ginning is the method of separating the cotton fibers from the seedpods, and sometimes with the sticky seeds. This is done in the cotton field with the help of machines.

Spinning
Spinning is the succeeding step to ginning. This process involves the making of yarn from the cotton fiber. The cotton yarns are made of different thickness in this stage.

Weaving
Weaving is the most important process in the making of cotton cloth. In this process, two yarn is placed to make warp and weft of a loom which successively turn them into a cloth.
 

Fabric finishes and treatments
After weaving the cotton fabric passes through different processing stages till it reaches to the state of final product. The stages are mentioned below, but it is not necessary for the fabric to undergo all the process for e.g. grain bags cloth are used unbleached.

  • Singeing - This process burns off the fibers sticking in the goods.
  • Desizing - This process involves removing the size material from warp yarns in woven fabrics.
  • Scouring - The cleaning part of the fabrics are involved in this process.
  • Bleaching - The fabrics are bleached here to make it more whiter and lighter.
  • Mercerizing - In this process, the fabric is immersed in alkali to make it more strong, shining, durable, shrink free and stretch free.
  • Dyeing - This process involves the changing of the fabric color by the treatment with a dye.
Finishing - In this process, the fabric is treated with some chemicals or other useful agents to make it qualitatively more better, for e.g. cotton is made sun protected by treating it with UV protecting agent.

Leather Fabric

Pre-tanning
  • Animal skin is cleaned and salted to prevent decay.
  • The hide or pelt then is sent to tannery for trimming and sorting.
  • Next, it is soaked in water to restore moisture content, which is lost during salting process.
  • It is treated mechanically with rollers and blades to remove fat/muscle and flesh (Fleshing).
  • During liming the skin is soaked in lime solution to remove the hair, inter-fibrillary protein and epidermis.
  • In De-liming the hide or pelt is washed in water containing ammonium chloride or ammonium sulphate to neutralise it.
  • Bating involves treating the leather with digestive enzymes to remove non-fibrous protein.
  • Scudding is done with a blunt knife to remove remaining hair roots, skin pigmentation, and surface fats.
  • Lastly, it is put in sulphuric acid to lower the pH.
Tanning

Tanning is the process where the leather gets the necessary feel and physical characteristics. In this process, the collagen, an insoluble fibrous protein, which carries the major property of the hide or pelt gets less susceptible to decay and are kept flexible. This is done by removing the water molecules from the gap of protein molecules and replacing it with chemicals that retain flexibility.

The main tanning processes are mineral/chrome tanning, vegetable tanning and oil tanning.
  • Mineral/chrome tanning is the most common and modern method, which uses chromium salts. This makes leather water proof and stretchable.
  • Vegetable tanning, or bark tanning is the process where the hide is soaked in a solution of bark of oak/chestnut which is chopped or boiled. The leather becomes moldable and can be tooled. Moreover when dry, the leather will not stretch.
  • Oil tanning is a process where fish and animal oil is used. The leather becomes very soft and flexible. It cope up with wetted condition without causing damage to the leather. Chamois leather is best example of oil tanning.
Lubricating, Dyeing and Finishing

After tanning, the leather undergoes different processes according to the use of the final product.
  • Vegetable-tanned leather which are used for shoe soles is bleached, lubricated and then run through rolling machines to make it firm and glossy.
  • Chrome-tanned leather, for shoe uppers, is split and shaved and then placed in a rotating drum for the dyeing process using several types of coloring materials to give color fastness and durability.
  • Before or after dyeing, it is rolled in a fat liquor containing emulsified oils and greases. Next, the leather is pasted on glass or ceramic frames and then passed through drying tunnels with controlled heat and humidity.
In the finishing process, the leather is coated with grain surface which contains finishing compound. This is brushed under a revolving brush-covered cylinder. For smooth finish, the leather is treated with a mixture of waxes, shellac or emulsified synthetic resins, dyes, and pigments (to avoid painted look). Glazing is done to achieve polished surface.

Silk Fabric

From Cocoon to Yarn
Silk from cultivated silkworms is more used though silk of wild worms is also valuable. The worms feed on mulberry leaves and increases their body size by nearly 10,000 times in a short span of time. The worm ceases to eat by the end of thirty days and attach itself to a piece of straw and begins to spin its cocoon. After the spinning of cocoon and before the hatching of the worm into a moth, the cocoon is soaked in hot water unraveling and producing long size thread. This fine thread is the basic component of silk yarn and fabric.

Washing and bleaching of the silk threads
The natural fiber extracted from the silkworm holds some glutinous substance (gummy substance or glue) which is removed by washing and bleaching.

Weaving
Weaving is a process where the fabric is created by interlacing the warp yarns and the weft yarns. It is either done by machines or hand. Hand woven fabric is better than the machine woven. It can make delicate designs with different colored thread. Modern machines use lances, projectiles, a jet of compressed air to shoot the weft-yarn between the warp-yarns. It leads to greater yield and productivity.

A good quality of silk begins with a warp of approximately 2,000 threads for one meter width. 1,600 threads or 1,800 threads are considered to be poor quality fabric. Loosely woven fabrics are difficult to sew.

Dyeing, Printing and Finishing
There are two main types of silk fabrics. One which is yarn-dyed or dyed-woven, like taffeta, duchess satin and many pattern-woven fabrics. The other type is piece-dyed fabrics, which is carried out after weaving, like crepes, twills, etc. The dyeing process gives the silk different shades.

Printing is giving pattern to the fabric. It is either done by block-printing method, roller-printing method or screen printing. Screen printing is widely used in silk fabrics.

Embroidery process gives embellishment and the perfect finish to the fabric to make it look more beautiful.

All fabrics has to be finished. It is here the fabric gets the desired appearance and feel. Finishing process is either physical or chemical. It give treatments like crease-proofing, water-proofing, fire-proofing, etc.

Final soaking in a chemical solution
This process helps to preserve the sheen and luster of the silk fabric. It adds weight and makes the fabric soft, smooth, easy to iron and wrinkle resistant.

Bleaching of Fabrics

Bleaching is an operation to remove the colored impurities from textile fibers. Cotton in its natural form contains so many minerals, waxes, proteins and coloring matters, etc. In order to attain a bright substrate for dyeing, bleaching or printing and to make the fabric uniformly water absorbent, a pretreatment is essential. 

So the first and foremost textile processing operation is called pretreatment, that remove remove the unwanted matters, such as color, minerals, waxes and oils and stains from the greige material. The pretreatment operation utilizes a lot of water and the quality of water plays a vital role in the cleansing of textile materials. Better the quality of water, better will be the processed goods.

As water and its quality play a very important role in wet processing, let us have a brief look into the quality of water required for wet processing, with an emphasis on reactive dyeing. We get water from various sources, like river, ponds, shallow wells and deep bore wells. According to the source of water, it contains many dissolved and suspended impurities. The water from a running river, contains many dissolved salts (solids) like Sulphates, Chlorides, silicates, Carbonates and Bicarbonates of heavy earth metals like Calcium, Magnesium, Iron, Aluminums, Sodium etc. The ratio of these salts varies according to the source of water. The general requirements of the water used in textile processing are given below: 

The water should be colorless, clear and free from suspended impurities.

Should not be hard and have the tendency to deposit, scale on fabric or on water supply structures.

It should be non-corrosive.
It should be free from metals such as iron, manganese, aluminums and copper
It should neither be too alkaline or acidic.

Color is normally an indication of the presence of suspended and dissolved salts that may affect the fiber/yarn/fabric. So it has to be removed from water prior use in processing, by a suitable de-coloration technique.

Turbidity or Suspended solids are due to a fine suspension of inorganic salts like (clay. silica, calcium carbonate) or organic finely divided vegetable matter like algae, micro-organism etc. This should also be removed using a suitable filtration technique.

Dissolved solids - in water treatment and analysis this term is called Total Dissolved Solids (TDS). The TDS reflects the presence of unwanted elements in dissolved form, which has to be removed using a suitable method. Good quality water should not have a TDS more than 150 ppm.

pH value – Water with a pH value of more than 7 is alkaline and one below 7 is acidic. Most of the textile processing treatments are dependent on pH values.

Hardness (Calcium and Magnesium) – the presence of Calcium and Magnesium salts in water is called hardness of water. 

Temporary Hardness: The presence of bicarbonates of Calcium and Magnesium in water is called temporary hardness. When the water containing these salts are heated to boil, the soluble bicarbonate salts will become insoluble carbonates and precipitate and the hardness disappears.

Permanent Hardness: The presence of carbonates, sulphates and chlorides of Calcium and Magnesium are called permanent Hardness, as this hardness cannot be removed by simple heating.

Friday, 21 October 2011

Textile Processing Industry

Here is a brief of a typical textile processing industry is given.

Singeing


The process of singeing is used for removing the protruding fibers and making the fabric surface smooth. Gas singeing the fabric by directing a flame on it, burns the protruding fibers and make the surface of the fabric smooth. Singeing is done because of the following two reasons. 
1. to enhance the appearance of the fabric 
2. to make smooth by removing the pills
Different types of machines are available for singeing. 
One burner for Singeing (for one side singeing only)
Two burner for Singeing (for both sides of fabric)
Four Burner for Singeing (Singeing each side of the fabric twice) 


The main Manufacturers for singeing machines are;
OSTOFF
PARAX


Desizing


To improve the performance of the yarn in weaving, size is applied to the yarn and this should be removed from the fabric before it is taken for processing. If not done so, shall lead to the contamination of the solution of the other processes and more over the full potential of the other processes will not be realized in addition to leaving a harsh handle to the processed goods.
Desizing is the process of removing the size applied during weaving. There are basically three type of desizing methods that are being adopted according the fabric construction, end use purpose and the economical requirements.
1. Acid Desizing
2. Basic Desizing
3. Enzymatic Desizing
The last two treatments are still being followed and the first one has been slowly going out of usage due to fabric strength loss.
The purpose of desizing is to remove the sizing ingredients such as starches, gums, PVA etc. The gums and PVA can be removed by simple hot wash. But starch has to be degraded in to smaller water  soluble  molecules by the process of hydrolysis. The hydrolysis of starch using enzymes under particular concentration, temperature and duration is called desizingThe enzyme desizing is carried out by padding the required concentration of the enzyme under the required pH and allowing the enzyme to hydrolyze the starch for a required length time in Pits.

Nowadays quick reacting enzymes are available in the market that can be used for continuous desizing operation without the need for allowing reaction time after the application of enzyme. Singe - Desize - Bleach- Mercerize-bleach- dry - is a simple route one can adopt instead of  going for a long route of 8 to 10 hour desizing.

The following parameters are considered to be very important to obtain a good singeing and desizing.
  1. Type of fabric - its construction, GSM, fibre content
  2. Speed of the application machine
  3. Flame height and intensity
  4. Brush position
  5. Bath Concentration, pH and temperature
  6. Mangle Expression percentage
Some conventional desizing recipes  on continuous processing machine  :-
Hydrogen Peroxide desizing (oxidative method/Basic method) :
Caustic soda 100%              = 40 g/l          Temperature of bath = room temperature
Sandozol HS                       = 0.3 g/l         pH of bath   = 10 to 10.5
Hydrogen Peroxide 50%       = 3.3 g/l         pH of the fabric = 8.5
Stabilizer AWNI                   = 0.3 g/l         Nip Pressure = 2.2.kg/sq.cm; speed = 100 meters/minute
Pick up = 70%
Enzyme Based desizing:
Texsize (enzyme)   = 1 gpl     bath temperature = 60 to 70°C - Common salt = 10 gpl pH of bath = 5.5 to 6.5
Deternon = 5 gpl - pH of fabric = 5 to 6 ; Oxalic acid = 0.5 gpl ; Acetic acid = 1 gpl
Nip Pressure = 2.2 kg/sq cm ; Speed (meters/minute) = 100 - 120 ; pick up = 70 to 75%
There are so many new products and inventions are coming up in the market to counter the various needs of textile processors. Right from desizing at room temperature to boiling temperature and neutral to alkaline pH are available in the market.
You will see new updates on this topic regularly in this column.





Monday, 17 October 2011

Online Calculators



1-Calculating Time for heating and Cooling

http://www.eng-calculations.com/heat%20time%20-%20batch%20reactor.aspx

2-Overall Heat Transfer Coefficient Calculator


http://www.hrsgdesign.com/uocalc3.htm

3-Fluid Flow Calculation (Java Required)


http://www.lmnoeng.com/

4-Mixing of Water Calculations


http://www.spiraxsarco.com/resources/calculators/water-mixing.asp

Compressed Air Compendium by Boge

Compressed Air System is very important and one of the most expensive utilities we normally used in industry. Here you can download Compressed Air Compendium Developed by Boge Compression.

http://uploading.com/files/mf66mf4m/CompressedAirCompendium.pdf/




Sunday, 16 October 2011

Top 10 Gulf Mega Projects


Client: Dow Chemical/Saudi Aramco
Scope: Over 11 million tpa of various petrochemical and chemical products.  
Status: Due for completion in 2015.
Estimated Cost: US$27 billion
Known Contractors: KBR have been awarded the project management contract. Remaining contracts out to tender in 2010.

When the world’s largest oil company joins forces with the world’s largest chemical company you know that the end result is going to be big . And RITP is very very big.

The facility will be the largest facility of its kind in the world and will produce a huge range of products including ethylene, propylene, aromatic, chlorine derivatives, polyethylene, ethylene oxide and glycol. It will also be connected to the Ras Tanura Refinery complex and its Jua’ymah gas processing plant.

The project further underlines Saudi Arabia’s massive expansion plans in regards to the petrochemicals industry. Output from the plant will be aimed at the export market 
The completion date has come under scrutiny recently with reports that the project could be delayed for one year.
2.                  Pearl GTL (Qatar)

Client: Qatar Petroleum
Scope: 140,000 bpd clean-burning fuel and other products, 120,000 barrels of oil equivalent per day of natural gas liquids and ethane.
Status: Due for completion in 2010.
Estimated Cost: $24 billion (up from an original estimate of $5 billion)
Known Contractors: JGC Corporation, Kellogg Brown and Root, Halliburton, MW Kellogg Ltd, Honeywell, Shell, General Electric.

Pearl GTL will be the world’s largest plant converting natural gas into clean-burning liquid transport fuel and other products. The construction of Pearl is ongoing at Ras Laffan on Qatar’s coast. More than 40,000 workers currently work onsite, making it one of the world’s largest industrial developments.

Of the two million tonnes of prefabricated parts for the GTL plant and equipment, including 12,200 kilometres of cables, about half has already arrived.

A gigantic crane is currently lowering steel GTL reactors - at 1,200 tonnes each is as heavy as seven jumbo jets - on to concrete bases in the heart of the plant. Twelve of the 24 cylinder-shaped reactors central to making GTL products have been installed so far. Some are built in Germany. Barges ferry the giant reactors, each containing hundreds of kilometres of pipes along the Rhine to the Dutch port of Rotterdam. From there, they are shipped to Qatar.

Drilling is under way. Sixty kilometres offshore, preparations to produce the raw gas from the North Field are well under way. Two platforms sitting in water up to 40 metres deep will feed gas to the plant. The steel structures, or jackets, to support the platform are already in place on the seabed.

3.                   Petro Rabigh Refinery Upgrade (Saudi Arabia) 

Client: Saudi Aramco/Sumitomo
Scope: 2.4 million of petrochemical solids and liquids plus large volumes of gasoline and other refined products.
Status:  Commissioning started in March
Estimated Cost: $10 billion
Known Contractors: Shaw Stone & Webster, JGC, Maire Tecnimont, Mitsui Engineering & Shipbuilding, Shell, Foster Wheeler, Invensys Process Systems.

Petro Rabigh is another huge Saudi project and the finished result will be one of the world’s largest integrated oil refining and petrochemical facilities.
The joint venture between Saudi Aramco and Sumitomo Chemical Co of Japan will refine Arabian Light crude oil to produce high-value light petroleum products. The complex will also produce ethylene, propylene and other refined products. 

Sumitomo Chemical and Saudi Aramco each hold a 37.5% stake in Petro Rabigh, while the remaining 25% is owned by public investors, following an IPO which took place in early 2008.

4.                   Shah Sour Gas Field Development (UAE)

Client: Abu Dhabi National Oil Co (ADNOC)
Scope: Production and processing facilities for extremely sour gas field.
Status: Flour Corp. finished the initial engineering and design work on the Shah Gas Development last month and 10 contract packages are now being prepared for tender to be awarded “within the year”,
Estimated Cost: $10 billion
Known Contractors:
ConocoPhillips
Desalination, construction and industrial power demands are increasing at an exponential rate, and though efforts such as the Masdar initiative will curb future requirement growth, it is essential the UAE works to harness the assets at its disposal.
The dolphin project is now running at full consumption of its current phase and the gas that's supplied to the UAE is very close to maximum capacity, so alternatives need to be looked at.

In the short term it's imperative that the UAE exploits what resources it possesses , and there are considerable sour gas reserves,"" explains Nick Coles, founder and organiser of the SOGAT conference and exhibition.

The UAE's estimated natural gas reserves stand at around 214 trillion cubic feet. This puts the UAE fourth among the largest natural gas reserves in the Middle East after Iran, Qatar, and Saudi Arabia.

However, the high sulphur content of that gas has made full exploitation problematic up to now. Abu Dhabi holds the dominant share of the country's reserves with proven fields of around 195 trillion cubic feet.

In Abu Dhabi the complexities envisaged in the development of the Shah and Bab fields have led to a rethink as to how best to optimise the gas potential of these sour fields against the considerable financial requirements involved, with the sour gas development project initiating these significant developments.

ADNOC have put out a tender to develop the Shah and Bab fields in conjunction with an IOC. This will expedite field development in the short term, and concurrently provide gas to fuel the UAE's considerable industrial, commercial and domestic power requirements," says Coles.

5.                  Khurais Oilfield (Saudi Arabia)

Client: Saudi Aramco
Scope: 1.2 million bpd oil, 315 million scfd sour gas, 70,000 bpd natural gas liquids 
Status: Almost completed, due to start production June 2009
Estimated Cost: $10 billion
Known Contractors:  SNC-Lavalin, Saipem,  Halliburton, Jacobs Engineering, SNC Lavalin, Saudi Consulting Services, Foster Wheeler Energy Limited

To put Saudi Aramco’s $10 billion Khurais oilfield project into perspective, the three fields involved in this huge venture, Khurais, Abu Jifan and Mazalij, hold 27 billion barrels of oil. This is more oil than the all of the proved reserves of the United States.

Khurais is the key component of Saudi Arabia’s bid to boost oil production by an extra 2 million bpd and nothing has been left to chance. The project involves the construction of a central processing facility, providing crude processing and stabilisation facilities, new wells and trunklines, a saltwater injection system, as well as a large residential and industrial complex.

With a completion date set for June 2009 the Khurais project has been some 46 years in the making. Situated close to Ghawar, the world’s largest oilfield, Khurais will provide an additional 1.2 million barrels per day Arab light crude to the KSA’s production capacity.

The project will also produce 315 million scfd of sour gas for the Shedgum Gas Plant and 70,000 bpd of natural gas liquids (NGL) for the Yanbu Gas Plant.

6.                  Manifa Offshore Oilfield (Saudi Arabia) 

Client: Saudi Aramco
Scope: 900,000 bpd oil, 120 million scfd sour gas, 50,000 bpd condensate, 950,000 bpd of produced water
Status: Due to start production mid-2011
Estimated Cost: $9 billion
Known Contractors:
Saipem, Halliburton, Foster Wheeler, Tecnicas Reunidas, Jan De Nul Group

The $11 billion Manifa (also known as Moneefa) project will be Saudi Aramco’s largest offshore field when fully operation and will add 900,000 bpd of extra capacity to Saudi Arabia’s oil output.
As well as the heavy crude, the Manifa field will also produce 120 million scfd of sour gas, 50,000 bpd of condensate, and 950,000 bpd of produced water.

The huge outlay is being spent on constructing a number of drilling islands, a central processing facility, a water injection system, downstream pipelines,  and a massive 41km causeway that runs to shallow-water offshore platforms. This will facilitate the easy transportation of goods and services both to and from the mainland. The nearby Khursaniyah Gas Plant is also being upgraded to cope with the additional gas from the project.

7.                  Saudi Kayan Petrochemicals Complex (Saudi Arabia)

Client: SABIC/Kayan Petrochemicals
Scope: Six million tpa of petrochemical and chemical products
Status: Expected to go onstream late 2010
Estimated Cost: $9 billion
Known Contractors:
Kellogg Brown and Root, Fluor, Samsung Engineering, Simon Carves, Tecnicas Reunidas, Van Leeuwen Pipe and Tube,

The project started life 2006 when SABIC formed a partnership with Kayan Petrochemicals and announced that it was planning to build the world’s largest integrated petrochemicals facility in Jubail Industrial City on the shores of the Arabian Gulf. 

The project was refinanced in 2008 in a $6 billion deal with a number of banks in a move to diversify the sources of finance. Saudi Kayan also took a $533m loan from the Saudi Industrial Development Fund to complete the construction costs. 

As well expanding the range of products produced in Saudi Arabia, Saudi Kayan intends to establish an applications centre which will focus on the development of industrial products and applications.

8.                  Hassyan Power & Desalination Plant (UAE)

Client: Dubai Electricity and Watar Authority (DEWA)
Scope: Construction of six stations with a capacity of around 1500 MW (gross) power & 100 - 120 MIGD desalinated water with a configuration plus a water storage and transfer system.
Status: Work scheduled to begin early 2010
Estimated Cost: $8.6 billion
Known Contractors: Project out to tender

Demand for power and water in Dubai is continuing to rise steeply as a result of the Emirate’s burgeoning economy and growing population.
As a consequence, state-owned utility Dubai Electricity and Water Authority (DEWA) has begun building one of the largest power and desalination plants in the world which, upon completion, will produce 9,000 MW of power and 720 million gallons of water each day.

The plant is being built on a 4 km2 site 60 km south-west of Dubai City on the shores of the Arabian Gulf. Nakheel’s Dubai Waterfront development is under construction to the north of the site and the border with Abu Dhabi lies to the south.

The plant will be built in six stages with the first two stages, PI Station and PII Station, due online from 2012. PI and PII will each consist of a 1,500 MW combined cycle gas power island and a 120 MIGD (million imperial gallons per day) desalination island. Costs are estimated at $2 to 3 billion per stage. Later stages of the plant are planned to come online from 2013.

A seawater intake canal carrying 90,000 gallons of water each second runs along the northern length of the site providing each of the six stages of the plant with water for desalination and cooling. Construction of the canal begins in 2009 and involves extensive dredging and civil works including the building of a 1.5 km long offshore intake channel and a 4 km long onshore canal. In addition, an offshore outfall channel will be built for the discharge of cooling water and brine from the plant. The outfall channel ends 4 km out to sea so that warm discharged brine is not re-circulated into the intake channel.

9.                  Ras Girtas Power Project (Qatar)

Client: Qatar General Electricity & Water Company
Scope: 9000 MW and 340 million imperial gallon per day (MIGD) targeted capacity when complete
Status: Project scheduled to start production in 2010 and in  2011 initially with 2730 MW of power and 63 MIGD of water
Estimated Cost: $3.9 Billion
Known Contractors: Mitsui Corporation of Japan, Hyundai Engineering and Construction Company, Mitsubishi Heavy Industry, Sidem.

Qatar's non-hydrocarbon economy is booming on the back of its gas investments and infrastructure developments. Population growth and increasing economic diversification will put a strain on current power and desalination capacity, so this project is key to the continued economic expansion of Qatar.

Qatar’s stable financial position and political environment, government support for investment, and availability of legislation and guarantees had contributed to the confidence of local and international banks in financing local projects, such as the Ras Girtas Project.

Careful consideration had been given to minimise and control emissions from the plant to meet international levels and standards and the government recently said it was comitted to completing the project on time, within allocated budgets and with a high level of quality and safety standards.

Once complete the plant will also provide off-peak electricity to neighbouring GCC countries via a planned regional power grid.  

The project is a Joint Venture between Qatar Petroleum (15%), Qatar Electricity and Water Company (45%), GDF Suez of France (20%), Mitsui Corporation of Japan (10%), Chubu Corporation of Japan (5%) and Shikoku Corporation of Japan (5%). "
  
10.              Shaybah Phase 2 Expansion (Saudi Arabia)

Client: Saudi Aramco
Scope: 250,000 bpd extra oil capacity
Status: Almost completed, due to start production June 2009
Estimated Cost: $3 billion
Known Contractors: SNC-Lavalin, Hyundai Heavy Industries (HHI), Energy and Power Contracting Co, Haif Co, Ahmad Al-Binali and Sons.

The Phase 2 expansion of the remote Shaybah oilfield, located in Saudi Arabia’s Empty Quarter has been quietly gaining momentum for the past five years. The completion date was supposed to be 2008 but work on the project slowed during 2008 due to a drop in global oil demand.

The project involves the construction of central processing facilites, including gas/oil separation plant, gas compression facilities, utilities, a gas turbine generation plant and electrical facilities. It has been reported recently that the project, which will increase the Shaybah’s capacity by 250,000 barrels per day (bpd) should be finished ‘within weeks’. The expansion will give Shaybah an output capacity of 750,000 bpd of Arabian Extra Light crude.

Saturday, 15 October 2011

Workplace Hazardous Material Information System (WHMIS)

W H M I S


WHMIS is implemented in Canada since 1988. The material which lie under the WHMIS are called controlled products.
There are 6 classes and 8 symbols which helps us to identify the controlled products.


Class A - Compressed Gas
Class B - Flammable and Combustible Material
Class C - Oxidizing Material
Class D - Poisonous and Infectious Material
Class E - Corrosive material
Class F - Dangerously reactive material


Class A - Compressed Gas



Any material that is normally a gas which is placed under pressure or chilled, and contained by a cylinder is considered to be a compressed gas. These materials are dangerous because they are under pressure. If the cylinder is broken, the container can 'rocket' or 'torpedo' at great speeds and this is a danger to anyone standing too close. If the cylinder is heated (by fire or rise in temperature), the gas may try to expand and the cylinder will explode. Leaking cylinders are also a danger because the gas that comes out is very cold and it may cause frostbite if it touches your skin (for example: carbon dioxide or propane). Common examples include: compressed air, carbon dioxidepropane, oxygen, ethylene oxide, and welding gases. The hazard symbol is a picture of a cylinder or container of compressed gas surrounded by a circle.
Additional dangers may be present if the gas has other hazardous properties. For example: propane is both a compressed gas and it will burn easily. Propane would have two hazard symbols - the one for a compressed gas and another to show that it is a flammable material.





Class B - Flammable and Combustible Material
Division 1: Flammable Gas
Division 2: Flammable Liquid
Division 3: Combustible Liquid
Division 4: Flammable Solid
Division 5: Flammable Aerosol
Division 6: Reactive Flammable Material
Flammable means that the material will burn or catch on fire easily at normal temperatures (below 37.8 degrees C or 100 deg F). Combustible materials must usually be heated before they will catch on fire at temperatures above normal (between 37.8 and 93.3 deg C or 100 and 200 deg F). Reactive flammable materials are those which may suddenly start burning when it touches air or water, or may react with air or water to make a flammable gas. The material may be a solid, liquid or gas which makes up the different divisions that fall under this class. Common examples include: propane, butane, acetylene, ethanol, acetone, turpentine,toluene, kerosene, Stoddard solvent, spray paints and varnish. The symbol for this class is a flame with a line under it inside a circle.



Class C - Oxidizing Material

Oxygen is necessary for a fire to occur. Some chemicals can cause other materials to burn by supplying oxygen. Oxidizers do not usually burn themselves but they will either help the fire by providing more oxygen or they may cause materials that normally do not burn to suddenly catch on fire (spontaneous combustion). In some cases, a spark or flame (source of ignition) is not necessary for the material to catch on fire but only the presence of an oxidizer. Oxidizers can also be in the form of gases (oxygen, ozone), liquids (nitric acid, perchloric acid solutions) and solids (potassium permanganate, sodium chlorite). Some oxidizers such as the organic peroxide family are extremely hazardous because they will burn (they are combustible) as well as they have the ability to provide oxygen for the fire. They can have strong reactions which can result in an explosion. The symbol for oxidizing materials is an "o" with flames on top of it inside a circle.



Class D - Poisonous and Infectious Material

Class D materials are those which can cause harm to your body. They are divided into three major divisions.
Division 1: Materials causing immediate and serious toxic effects
    Subdivision A: Very toxic material
    Subdivision B: Toxic material
These are materials that are very poisonous and immediately dangerous to life and health. Serious health effects such as burns, loss of consciousness, coma or death within just minutes or hours after exposure are grouped in this category. Most D-1 materials will also cause longer term effects as well (those effects that are not noticed for months or years). Examples of some D-1 materials include carbon monoxide, sodium cyanide, sulphuric acid, toluene-2,4-diisocyanate (TDI), and acrylonitrile. The symbol for Class D - Division 1 (D-1) is a skull and crossed bones inside a circle.
Division 2: Materials causing other toxic effects
    Subdivision A: Very toxic material
    Subdivision B: Toxic material
These materials are poisonous as well. Their effects are not always quick, or if the effects are immediate but they are only temporary. The materials that do not have immediate effects, however, may still have very serious consequences such as cancer, allergies, reproductive problems or harm to the baby, changes to your genes, or irritation / sensitization which have resulted from small exposures over a long period of time (chronic effects).
Division 2 of Class D has two subclasses called D2A (very toxic) and D2B (toxic). While it is not a legal requirement for the WHMIS sub-classification to be reported on the Material Safety Data Sheet (MSDS) nor is it a requirement for classes D2A or D2B to be distinguished on the label, it is often possible to make this distinction using the health hazard information on the label and/or the MSDS.
Products are typically classified as D2A (very toxic) if the chemical has been shown to be carcinogenic, embryo toxic, teratogenic, mutagenic (to reproductive cells), reproductive toxic, sensitizer (to respiratory tract) or chronic (long-term) toxicity (at low doses). Subdivision D2B (toxic) covers mutagenic (to non-reproductive cells), sensitization of the skin, skin or eye irritation, as well as chronic toxic effects.
Examples include: asbestos fibres, mercuryacetonebenzenequartz silica (crystalline)lead and cadmium. The symbol for materials causing other toxic effects looks like a "T" with an exclamation point "!" at the bottom inside a circle.

Division 3: Biohazardous Infection Material
These materials are organisms or the toxins they produce that can cause diseases in people or animals. Included in this division are bacteria, viruses, fungi and parasites. As these organisms can live in body tissues and fluids, they should be treated as toxic. Urine and feces should be treated as toxic only if they are visibly contaminated with blood. Biohazardous infectious materials are usually found in a hospital, health care facility, laboratories, veterinary practices and research facilities. Workers in these places do not usually know which tissues or fluids contain dangerous organisms. For this reason, the workers assume that every sample is dangerous and proper protection is used all the time. Examples of biohazardous infectious materials include the AIDS/HIV virusHepatitis B and salmonella. The symbol for this division looks like three "c"s joined together with a little circle in the middle all inside a circle.
Class E - Corrosive material

Corrosive is the name given to materials that can cause severe burns to skin and other human tissues such as the eye or lung, and can attack clothes and other materials including metal. Corrosives are grouped in this special class because their effects are permanent (irritants whose effects may be similar but temporary are grouped in Class D-2). Common corrosives include acids such as sulphuric and nitric acids, bases such as ammonium hydroxide and caustic soda and other materials such as ammonia gas, chlorine, and nitrogen dioxide. The symbol for a corrosive is a picture of two test tubes pouring liquid on a bar (piece of metal) and a hand with lines coming off of them inside a circle.

Class F - Dangerously reactive material

A material is considered to be dangerously reactive if it shows three different properties or abilities: first, if it can react very strongly and quickly (called "vigorously") with water to make a toxic gas; second, if it will react with itself when it gets shocked (bumped or dropped) or if the temperature or pressure increases; and thirdly, if it can vigorously join to itself (polymerization), break down (decomposition) or lose extra water such that it is a more dense material (condensation). If a material is dangerously reactive, it will most likely be described as "unstable". Most of these materials can be extremely hazardous if they are not handled properly because they can react in such a quick manner very easily. Examples of these products are ethyl acrylate, vinyl chloride, ethylene oxide, picric acid and anhydrous aluminum chloride. The symbol for dangerously reactive materials is a picture of a test tube with sparks or lines coming out of the tube surrounded by a letter "R" inside a circle.





Materials which are not covered in WHMIS

There are nine basic categories of materials that are not covered by WHMIS. When WHMIS was created it was recognized that a lot of safety information was already being transmitted to workers for many of these products under other laws. To prevent delay in starting WHMIS, exclusions were made.
They are:
  • consumer restricted products (those products sold to people in regular stores that are already labelled following the rules of the Hazardous Products Act)
  • explosives (as defined by the Explosives Act)
  • cosmetics, drugs, food or devices (as defined by the Food and Drug Act)
  • pest control products (pesticides, herbicides, insecticides, etc) (as defined by the Pest Control Products Act)
  • radioactive materials (as defined by the Nuclear Safety and Control Act)
  • wood and products made of wood
  • a manufactured article
  • tobacco or products made of tobacco
  • hazardous wastes
    Materials which fall under WHMIS follow the Transportation of Dangerous Goods Act and Regulations while they are in transport (shipment).
    For several years, there have been proposals to make some of the above products follow the WHMIS laws. Most of the products that may be affected are the ones in categories 1, 2, 3, 4, and 5. However, there have been no changes to the WHMIS regulations yet.


    WHMIS Information can be transferred to Workforce by three ways

    1. Labels
    2. Material Data Safety Sheets (MSDS's)

    There are nine categories which must be available in MSDS according to Canadian Law. Some MSDS may include upto 16 categories but the mentioned nine should be a part of that.

    3. Education and Training Programmes




    Acceptable Supplier Label Format

    Product Identifier



    Health and Safety Management Systems


    Management Systems
    1. BS 8800:2004 (Health and Safety Management Guidance Standard)
    2. BS EN ISO 9001:2000, (Quality Management standard)
    3. BS EN ISO 14001:2004 (Environmental Management standard)
    4. BS OHSAS 18001:2007 (Occupational Health and Safety Management standard)
    5. ILO OSH: 2001 (Guidelines on Occupational Health and Safety Management Systems)
    6. CIA Responsible Care  Management System Framework
    The main theme of all these management systems is;

    1. Identify the issues that need to be addressed,
    2. Set the direction/standards to be achieved,
    3. Plan what needs to be done,
    4. Organise who is going to do it,
    5. Equip them to do so,
    6. Do it,
    7. Check it has been done,
    8. Check that it worked and
    9. Learn from/feedback lessons from this exercise to (continually) improve (the process and outcomes).
    HSG 65 aims to provide guidance and advice on good practice in health and safety management. First published in 1991 and revised in 1997 it explains how great the human and organizational losses can be when health and safety risks are not properly controlled.  It promotes effective control through actively managing health and safety systematically (within the context of managing the whole business) and raises the importance of related issues including leadership, employee involvement and other aspects that are often grouped under the heading of health and safety “culture”.  HSG 65 is not an approved code of practice and does not provide detailed requirements for compliance with the legal requirements that which cover management issues (HSW 74 section 2, the Management of Health and Safety at Work Regulations 1999, and the “permissioning” Regulations in sectors such as Railways, Offshore and COMAH), although it does state that following the guidance will “normally be … enough to secure compliance with the law”.  HSG 65 is well known for describing the systematic “POPMAR” (policy, organization, planning and implementing, measuring, auditing, reviewing) model for managing health and safety.


    BS 8800:2004 is a Guidance standard which has the same aims as HSG 65. The 2004 edition was devised with substantial input from HSE and is based on the structure of HSG 65.  It is currently (2007-8) being reviewed by BSI to take account of the 2007 revision of OHSAS 18001 (and an anticipated review of HSE’s policy and strategy on successful health and safety management) and is likely to be renamed BS OHSAS 18004: 2008. A shorter “lite” version is also being considered, to address the needs of less complex businesses.


    BS EN ISO 9001:2000, BS EN ISO 14001:2004 and BS-OHSAS 18001:2007 are certifiable ‘standards’, (see later note), the purpose of which is to help organizations create management systems and to demonstrate to their stakeholders that the organizations concerned have introduced management systems which have a required characteristics.


    Compliance with certifiable standards is demonstrated through audit by a certifying body, which itself should be accredited by the UK Accreditation Service, (UKAS).  The Environment Agency takes account of operators’ management systems in its OPRA environmental risk rating scheme, giving operators credit for having environmental management systems that are certified as meeting BS 14001 standards.  A recent study has suggested positive correlations between certified implementation of BS14001 and good environmental performance, but apparently only where the audit and certification is by an accredited certifying body.


    BS EN ISO 9001:2000 is a quality management system standard, which relates to the quality of the product or service being provided. This does not extend to the health and safety of the processes used to manufacture or deliver the product or service. ISO 9001 is essentially about process and has no element requiring risk assessment.


    BS EN ISO 14001:2004 is an environmental management system standard. Environmental control standards/issues tend to be a little less complex than those associated with health and safety which means environmental management can be more amenable to the systems approach. The main differences in scope of the standard relative to HSG 65 are  that there is little on risk assessment (in 4.3.1) and no specific requirements for employee involvement.


    BS OHSAS 18001:2007 is a health and safety management system standard.  Originally produced in 1999, it was substantially revised in 2007 with substantial input from HSE and aligns quite closely with HSG 65 and BS 8800.  It also shows close alignment with BS EN ISO 14001:2004, quite close alignment with ILO OSH 2001 and some alignment with ANSI Z10, a recent American National standard for health and safety management. Although published in the UK by BSI and subject to the usual consultation process in its development, OHSAS 18001 was also subject to separate international negotiation and agreement. It affords a reasonable model on which to base a systematic approach to managing health and safety within a whole business context but does not provide guidance on how to build or apply it and incorporates relatively few aspects of health and safety culture. Some guidance on all these aspects is, however, contained in the accompanying publication BSI-OHSAS 18002:2000, which is also being updated and expanded to take account of the new edition of 18001.


    ILO OSH: 2001 aligns closely with HSG 65 and BS 8800:2004 but has greater emphasis on employee involvement – reflecting the European emphasis on worker involvement and the tri-partite nature of its development.



    • ‘Responsible Care’ is a programme sponsored by the Chemical Industries Association (CIA). It aims to promote good management of health and safety, environment and some aspects of quality in the chemical industry for the purposes of demonstrating good performance to stakeholders. TheResponsible Care Management System Framework provides a well-structured, sector-specific model on which to base a systematic approach to managing health and safety in the chemical process industry.  It draws on and cross-references earlier editions of the other standards outlined above.
    This simple picture may be complicated where organizations have sought to integrate the requirements of one or more of the above (or other) standards into a single system.