UNIVERSITI KUALA LUMPUR MALAYSIAN INSTITUTE OF CHEMICAL AND BIOENGINEERING TECHNOLOGY

UNIVERSITI KUALA LUMPUR
MALAYSIAN INSTITUTE OF CHEMICAL AND BIOENGINEERING TECHNOLOGY
(TASK 2)
SUBJECT
PLANT UTILITIES & MAINTENANCE (CPB20004)
LECTURER
MOHD SYAZWAN BIN MOHD GHAZALI
DATE:
9th MARCH 2018
ORGANIZED BY:
NASRUL AWAL BIN AMERUDIN 55213116074
MOHAMAD NURHIDAYAT BIN STAFA 55213116002
MUHAMMAD SYAKIR NAIM BIN ZAIMIN 55213116094
NIK MUHAMMAD ZAIM IKMAL BIN AZHAR 55213116116

27184868274496TABLE CONTENT
NO CONTENT PAGES
1.0 INTRODUCTION 1-2
2.0 HISTORY BACKGROUND 3
3.0 COMMERCIAL 4-5
4.0 PROCESS OVERVIEW / TECHNICAL INFORMATION ON PROCESS
PROCESS DESCRIPTION
PROCESS FLOW DIAGRAM
ORIGINAL PROCESS FLOW DIAGRAM
EDITED PROCESS FLOW DIAGRAM 6-8
9
10
5.0 REACTION / MAJOR PROCESS
5.1 INITIATION
5.2 PROPAGATION
5.3 TERMINATION 11
12
13
6.0 PHYSICAL PROPERTIES, HAZARDOUS PROPERTIES, HANDLING
6.1 PHYSICAL AND HAZARDOUS PROPERTIES
6.2 HANDLING 14
15
7.0 REFERENCES 16
8.0 APPENDICES 17-24
1.0 INTRODUCTION
For this task, students need to find history background of the chemical substance and its commercial value. Moreover, students are given tasks to find information about process overview or technical information on process. In this section, students need to find process description, process flow diagram which is original and the edited one and also other information about the process. Furthermore, students need to find about the reaction and its major process. Lastly, students need to find about physical properties, hazardous properties and safety handling.

For the task product background, we choose ethylene as the main chemical component used in the petroleum making. Joachim Becher is the first founder of ethylene and he stated about this gas in his Physica Subterranea in 1669. Dutch chemists improve the information about ethylene by studying more on the properties of ethylene. Adrien Paets van Troostwyck, Johann Rudolph Deimann, Nicolas Bondt and Anthoni Lauwerenburgh are the names of them which discovered the production of oil which is 1,2-dichloroethane with the reaction between ethylene and chlorine and gave the ethylene use as olefiant gas known as oil-making gas. Then there are many chemists around the world which did research more about ethylene.

In the task of process description, we choose the process of steam-cracking which also usually use for manufacturing of ethylene by the mixture of propane and ethane including three parts of them which are cracking and quenching, compression and drying and separation. These processes are all briefly explain by using process flow diagram. Process cracking and quenching form propylene, ethylene and other by products. This process use ethane and propane mixture which happened in furnace. The outlet stream is fed to water-based quench which prevent further reaction. Tar, coke, heavies and quench tower at the downstream are removed.

Then, the cracked gas from the quench is flow direct to the compression and separation. Compression process has five stages. Compression process remove all the sulphur and carbon dioxide from the cracked gas. Next, the process also removes almost all the water from the compressed cracked gas. Meanwhile, separation section removes hydrogen and light hydrocarbon at the same time minimize the losses of ethylene occurred when the cracked gas is fed to a cold box.
In this state, condensates are fed from the chilling train to a series of separation columns. For the separation process, the first column is demethanizer where acquired at the top stream of the column while the bottom stream is fed to a second column called ad deethanizer. At the top of deethanizer, the fed to the acetylene converter and fractionated in the C2-splitter. Side stream column give Polymer-grade (PG) ethylene while lights are removed from the overheads and then recycled to the compression system. Ethane is recycled to the cracking furnaces from the C2-splitter bottoms. The top products of deethanizer is distilled C3 component while the bottom fed towards depropanizer. At the overhead stream where propadiene is removed and methyl acetate is catalytically hydrotreated. Furthermore, the top stream is fed to the C3-splitter where the polymer-grade (PG) propylene is drawn from the column as a side stream while lights are removed from the overheads. Propane is recycled from the C3-splitter bottom to the cracking furnaces. Last product is C4+ stream which is obtained from the depropanizer bottoms.

Ethylene is mainly used industry so there are many benefits of ethylene. Firstly, in the agriculture section ethylene used as ripening hormone especially for fruits. Next, it is used in use in manufacture of polymers such as polyethylene terephthalate, polyethylene, polystyrene and polyvinyl chloride as other organic chemical and fibres. In addition, about 60% of ethylene is contributed globally as the largest outlet which is polyethylene. Ethylene oxide also among the largest consumer of ethylene which usually used for production of ethylene glycol. Furthermore, by the process chlorination of ethylene can produce ethylene dichloride (EDC) and can then be cracked to make vinyl chloride monomer (VCM). Ethylene can be reacted with benzene to make ethylbenzene which is further processed into styrene.

2.0 BACKGROUND HISTORY
Ethylene have been obtained by Joachim Becher and he stated about this gas in his Physica Subterranea in 1669. He started obtained this chemical by heating the ethanol with sulphuric acid. In 1779, Joseph Priestley also observed and study more details about this chemical by relating to the various branches of natural philosophy such as with a continuation of the observation air.  In 1795, four Dutch chemist were study more about the properties of ethylene Among the Dutch chemist that involved in this searching were Adrien Paets van Troostwyck, Johann Rudolph Deimann, Nicolas Bondt and Anthoni Lauwerenburgh where there found that it contained both carbon and hydrogen and it differed from hydrogen gas. Furthermore, the production of oil which is 1,2-dichloroethane with the reaction between ethylene and chlorine was discovered by this group and gave the ethylene use as olefiant gas known as oil-making gas.
In the mid of 19th century, the name has been added from an Ancient Greek root which is the suffix -ene that give the meaning “daughter of”. Ethylene was widely used to refer to a molecule or part thereof that contained one fewer hydrogen atoms than the molecule being modified. In early 1852, the name for ethylene being used and also be part of the “daughter of ethyl”. In 1866, a system of hydrocarbon nomenclature being introduced by the German chemist August Wilhelm von Hofmann  which the suffixes -ane, -ene, -ine, -one, and –une. It is showed the hydrocarbons with 0, 2, 4, 6, and 8 fewer hydrogens than their parent alkane because of that ethylene became ethene. This system was officially be a benchmarked for the Geneva nomenclature approved by the International Congress of Chemists which remains as a core of the IUPAC nomenclature in 1892. However, the name is commonly used in that time even remains in wide use now especially in the chemical industrial. Moreover, in 1979 IUPAC nomenclature made an exception to retain the name of ethylene based on the rules at that time but in 1993 the decision was against the previous rule wher the IUPAC name convert to the ethane today.

3.0 COMMERCIAL
Ethylene is a commonly chemical that use in the industry today. There are many application and usage that provided by the ethylene. Firstly, in the agriculture section ethylene used as ripening hormone especially for fruits. Ethylene can be produced by some fruits as the beginning of ripe such as pears and apple the example of fruit that produce ethylene ripening. In ripening session ethylene functioning for the changes in texture, colour, softening, and other processes. Ethylene also known as aging hormones in plant.
Ethylene also use in manufacture of polymers such as polyethylene terephthalate, polyethylene, polystyrene and polyvinyl chloride as other organic chemical and fibres. These products are commonly used in industrial and consumer market such as transportation; electrical and electronic; packaging; construction industries as coatings, adhesives and consumer chemicals; and lastly packaging.

Furthermore, about 60% of ethylene is contributed globally as the largest outlet which is polyethylene. Polyethylene which are linear low density and low density commonly towards film applications such as non-food and food packaging, stretch and shrink film and non- packaging uses. Besides, for high density polyethylene (HDPE) used in injection and blow moulding application such as household goods, caps, pallets and containers. This HDPE also can be used as gas and irrigation, film for carrier bags, industrial lining and refuse sacks, and lastly can be extruded into pipes for water.
Ethylene oxide also among the largest consumer of ethylene which usually used for production of ethylene glycol. In addition, monoethylene glycol (MEG) used as antifreeze applications but the most primarily used in textile applications by production of polyester fibres. Other EO derivatives include ethyoxylates for use in kitchen cleaners and shampoo, for glycol ethers used as solvents fuels and lastly, ethanolamines commonly used as personal care products and surfactants.

 
Furthermore, by the process chlorination of ethylene can produce ethylene dichloride (EDC) and can then be cracked to make vinyl chloride monomer (VCM). This VCM main applications contributed most in the construction industry in production polyvinyl chloride. Ethylbenzene can produce by the reaction between ethylene with benzene and can further the process into styrene.

Ethylene can be reacted with benzene to make ethylbenzene which is further processed into styrene. The main outlets for styrene are polymers and synthetic rubbers such as styrene butadiene rubber (SBR), polystyrene and acrylonitrile-butadiene-styrene (ABS). Other ethylene derivatives include vinyl acetate monomer (VAM) which is used in adhesives, paints, paper coatings and barrier resins; alpha olefins which are used in detergent alcohols and plasticizer alcohols; and industrial ethanol which is used as a solvent or in the manufacture of chemical intermediates such as ethyl acrylate and ethyl acetate .

4.0 PROCESS OVERVIEW / TECHNICAL INFORMATION ON PROCESS
4.1 PROCESS DESCRIPTION
The process of steam-cracking process for usually use for manufacturing of ethylene by the mixture of propane and ethane. This process consists of three main part which are cracking and quenching; compression and drying; and separation. Firstly, for the cracking and quenching section is the beginning part where the ethane and propane mixture fed into the furnace under some condition. The incipient cracking temperature is between 500-650 ?C. The mixture is then fed to a fired tubular reactor. The residence time, temperature profile and hydrocarbon partial pressure are controlled which is the mixture is heated until 750-900 ?C. Then, this process started to crack and forming propylene, ethylene and other by products.

The quench section starts when the furnace outlet stream must be fed to a water-based quench to prevent from formation of undesirable products and further reaction occurred. From the condensed dilution steam, tar, coke, heavies and quench tower at the downstream all are being removed. In the quench section, the effluent is fixed in their kinetic development by sudden quench first by indirect quench by water to 400 – 450 ?C in transfer line exchanger or quench boiler. The reason is to avoid subsequent reaction. Then, the cracked gas from the quench is flow direct to the compression and separation. Furthermore, in the compression and drying part where the cracked gas has to be compressed along the five stages. When at the third stage of compression, the caustic soda and water washes in caustic scrubber are functioning to remove all the sulphur and carbon dioxide from the cracked gas. After that, cooled and dried by molecular filter that remove almost all the water from the compressed cracked gas. Moreover, in the separation section where the removal of hydrogen and light hydrocarbon at the same time minimize the losses of ethylene occurred when the cracked gas is fed to a cold box.
In the cold section, caustic scrubbing and drying the light effluents performs the separation of hydrogen to various concentration, 99.4% ethylene containing, 95% propylene, a C4 cut containing 25-50percent butadiene and pyrolysis gasoline. The pyrolysis gasoline rich in aromatic hydrocarbons. The complexity of the separation section of a cracker rises markedly as the feed changes from ethane. In this state, condensates are fed from the chilling train to a series of separation columns. At the first column which is demethanizer where the methane being used for extend used it the cold box when the methane acquired at the top stream of the column. Methane condensed about 1000 ?C and the pressure is 32 Pa. At the same time, the bottom stream is fed to a second column called ad deethanizer.
After that, ethylene and ethane being composed primarily at the top of deethanizer, the fed to the acetylene converter and fractionated in the C2-splitter. In this column, polymer-grade (PG) ethylene is drawn from the column as a side stream while lights are removed from the overheads and recycled to the compression system. Ethane is recycled to the cracking furnaces from the C2-splitter bottoms. Moreover, at the overhead deethanizer where distilled C3 component be found and at the bottom fed towards depropanizer. At the overhead stream where propadiene is removed and methyl acetate is catalytically hydrotreated. Meanwhile the acetylene eliminated by selective hydrogenation which use catalyst under 40-80?C and pressure 3 kPa. The catalyst is palladium or nickel. Furthermore, the overhead stream is fed to the C3-splitter where the polymer-grade (PG) propylene is drawn from the column as a side stream while lights are removed from the overheads. Propylene content is 95%. Propane is recycled from the C3-splitter bottom to the cracking furnaces. Lastly, a C4+ stream is obtained from the depropanizer bottoms.

For other information, in non-catalytic tubular coils built is where the thermal cracking reactions occur into the radiant section of the fired heaters. The carbon chain length in the feedstocks affects the temperature requirement in a cracking reaction. It is inversely proportional to each other. High endothermic reaction of the cracking reactions require a lot of energy. The energy is provided by side-wall or floor burners or a combination of both, which use gaseous and/or liquid fuels. Residence times are longer for heavy than for light feedstocks. Other than that, in the steam cracking of ethane, propane and, to a lesser degree, butane, the slightly differences in product yields for residence times ranging from 0.2 to 1.2s. In addition, residence times range from 0.2 to 0.3s for liquid feedstocks. Secondary reactions will happen for long residence times.

From the thermodynamic standpoint, pyrolysis reactions producing light olefins by cracking or dehydrogenation process are more advanced at low pressure. But the range is highly disadvantaged for the condensation reactions. The reason is why having pressure drops inherent in the circulation of the reaction mixture, furnace tubes operate at exit pressures close to atmospheric pressure. Moreover, the condensation side-reaction rate is much more heavily affected by the hydrocarbon content of the reaction mixture that the rate of the primary reactions. The primary reactions are substantially of the first order with respect to the reactants. A decrease in the partial pressure of the hydrocarbons, by dilution with steam, reduces the overall reaction rate. However, it helps to improve the selectivity of pyrolysis substantially with the help of the desired light olefins. The use of steam also demands a number of drawbacks which impose a limit value to its content in the feedstock. Since steam must be heated to the reaction temperature, its presence increments the required reactor volume and also the furnace investment. Its separation from the reactor effluent needs very large condensation areas. Hence it gives high utility consumption. The molecular weight of the feedstock affects the amount of steam employed or called as the weight of steam per weight of feedstock.
Severity is usually used to tell about the depth of cracking or extent of conversion. The definition of severity varies with the different manufactures. It also maybe different accordingly to the type of hydrocarbon treated. In the case of steam cracking of the ethane and propane, it is convenient to express the severity of the operating conditions in terms of feed conversion. The methane and ethylene yield level off, while those of propylene and C4 cut reach a peak and then decline consequently at very high severities. The ratio of ethylene and propylene yield rises with severity. It also helps to improve the formation of ethylene. The relative production of C5+ cut passes through a minimum. Hence it also tends to rise and at the very high severity. Because of that, modern ethylene plants are normally designed by company for near maximum cracking severity. The reason is to increase the production because of economic consideration.

4.2 PROCESS FLOW DIAGRAM
4.2.1 ORIGINAL PROCESS FLOW DIAGRAM
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4.2.2 EDITED PROCESS FLOW DIAGRAM (Using E-draw Max Software)
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5.0 REACTION / MAJOR PROCESS
The principles of the manufacturing of ethylene in the thermal steam cracking has to be done via some reactions and process. Many reactions of hydrocarbon in thermal cracking are occurred. The reactions are complex and have numerous radical steps to produce ethylene. Radical reaction is the principle reaction in the thermal cracking reaction. The radical chain reaction is purposed to decompose the ethane in the thermal steam cracking. The whole radical mechanism pyrolysis of ethane can be grouped as follows:
• Initiation
• Propagation
• Termination
5.1. Initiation
In this reaction, the chemical bond between two carbon atoms of ethane is break and two alkyl group which is ethyl is formed. Pyrolysis is non-catalyzed method of thermal decomposition of hydrocarbons. Very high temperatures, 750-900 °C has been achieved to undergo this reaction. under this condition, mainly cracking reactions of one or more covalent carbon-carbon bonds in the hydrocarbon molecules take place by a free radical mechanism. The production of the small molecules in high quantity will be formed after the reaction. The dehydrogenation reactions also happened by cracking the C-H bond.:
164782522034500Cracking of C-C bond.

CH3?CH3 ? •CH2?CH3
165735021717000Cracking of C-H bond
CH3?CH3 ? •CH2?CH3 + H2
5.2 Propagation
Many different reactions in the propagation phase, involving hydrogen abstraction, addition, radical decomposition and radical isomerization. The number of possible radicals and reactions will be increasing swiftly in the propagation phase, as the chain length increases. The free-radical mechanism is generally accepted to explain hydrocarbon pyrolysis at low conversion.

Hydrogen abstraction
In these hydrogen transfer reaction is the formation of new radical molecule based on the abstraction of one hydrogen atom. This reaction of hydrogen abstraction is dependent to C-H bond energies.

H• + CH3?CH3 ? •CH2? CH3+ H2
Addition reaction
In these addition reactions a free radical of methyl will transfer a hydrogen atom to ethane molecule and turning the ethane molecule into a free radical of ethyl.

CH3?CH3 + •CH3 ? •CH2?CH3 + CH4
Decomposition reaction
In these decomposition reactions a free radical will break ethyl molecule apart into two molecules which are ethane and the other a free radical of hydrogen. This process will produce ethane as a product in this reaction.
•CH2?CH3 ? CH2 = CH2 + H•
Isomerization reaction
In these isomerization reaction or reverse of radical decomposition reactions, a radical reacts with an alkene to form a single, larger free radical. Aromatic products will be formed in this reaction when heavier feedstocks are used.

•CH2?CH3 + CH2=CH2 ? •CH2?CH2?CH2?CH3
5.3 Termination
Termination is the final phase of free-radical reactions. This reaction is the opposite to initiation that cause the elimination of radicals and form stable products. In termination phase, could happened addition between two radicals and also reactions between radicals and the reactor wall.

In these reactions two free radicals will reacts with each other to produce products that are not free radicals such as alkane. Two major reactions of termination are recombination, where one larger molecule is formed from the combination of two radical molecules combine, and disproportionation, this is the reaction where one radical transfers a hydrogen atom to the other, as the result produce are alkene and an alkane.

Termination by recombination:
•CH2?CH3 ? CH3?CH3
•CH3 + •CH2?CH3 ? CH3?CH2?CH3
Termination by disproportionation:
•CH2?CH3 + •CH3 ? CH2= CH2 + CH4
6.0 PHYSICAL PROPERTIES, HAZARDOUS PROPERTIES, HANDLING
6.1 Physical and Hazardous Properties
Ethylene has the molecular formula C2H4 is belong to hydrocarbon group. It has sweet odor and taste and the compound also is colourless and flammable. The molar mass for ethylene is 28.05 g/mol which is lighter than air. It has 1.178 kg/m3 for the density at 15 °C in state of gas. The melting point and boiling point is -169.2 °C and -103.7 °C. It is easily ignited and a flame can easily flash back to the source of the leak. This compound has critical temperature which is at 282.35 K and critical pressure at 5.0408 MPa. Ethylene as well can result person health by breathing of air containing tremendously high levels of ethylene. It can lead to headache, tiredness, faintness, vomiting, weakness and unconsciousness.

Benzene is an organic compound which has molecular formula C6H6. It is a colourless liquid, aromatic hydrocarbon with a gasoline-like odor. Molar mass for benzene is 78.11 g/mol while the density is 0.8765 g/cm3. The melting point and boiling point for this compound is 5.53 °C and 80.1 °C respectively. The solubility for this compound is soluble in alcohol, CHCl3, CCl4, diethyl ether, acetone and acetic acid. The risk of cancer and other illnesses can possibly increase with exposure to the benzene. It is also a notorious cause of bone marrow failure. This compound has no safe exposure level. It can cause harm even tiny amounts of benzene exposed.
Ethylbenzene has the molecular formula C6H6CH2CH3. It is a highly flammable and colourless liquid with an odor similar to that gasoline. Molar mass for ethylbenzene is 106.17 g/mol while the density is 0.8665 g/ml. This compound has melting point and boiling point which is -95 °C and 136 °C respectively. This ethylbenzene can effect health too. When someone expose to high level of ethylbenzene, eye and throat sensitivity can occur while dizziness caused by exposure at higher level of ethylbenzene. This compound also can cause an explosive when mixture of ethylbenzene vapors and air occur.
6.2 Handling
For ethylene, please ensure that to keep away ethylene from heat surfaces. Quickly remove all the gas to the fresh air and keep at rest in a position comfortable for breathing if inhaled it. Do not allow cylinders to slide or come into contact with sharp edges. Also ensure that the equipment is adequately earthed. Apparent signs should be posted in the storage area forbidding smoking or the use of naked lights. Compliance with all suitable legislation is necessary. Please keep away from children.
For benzene, always make sure that the compound keep locked up and keep it away from heat and sources of ignition. All the equipment that containing material must be grounded. Do not breathe the benzene gas. All experiment must be run inside the fumes chamber. Wear a convenient respiratory equipment. Quickly seek for medical advice if get ingested and show to container or the label. Also avoid contact with skin and eyes. Please make sure the compound is far away from incompatibles such as oxidizing agents or acids.
For ethylbenzene, please obtain special instructions before using the chemical. Wear a suitable personal protective equipment as required. Do not get in eyes, on skin or on clothing. Avoid ingestion and inhalation. Ensure adequate ventilation. Stack away from open fire, hot surfaces and sources of explosion. All metal parts should be stranded in order to avoid explosion of vapors by static electrical energy discharge.

7.0 REFERENCES
Grace Chan, K. Y., Inal, F., & Senkan, S. (1998). Suppression of coke formation in the steam cracking of alkanes: ethane and propane. Industrial & engineering chemistry research, 37(3), 901-907.

Boller, T., Gehri, A., Mauch, F., & Vögeli, U. (1983). Chitinase in bean leaves: induction by ethylene, purification, properties, and possible function. Planta, 157(1), 22-31.

Miller, S. A. (1969). Ethylene and its industrial derivatives. Benn.

Lieberman, M. (1974). Specific inhibitors of ethylene production as retardants of the ripening process in fruits. Facteurs et Régulation de la Maturation des Fruits, 161-170.

Lowrance, E. G. (1970). U.S. Patent No. 3,530,199. Washington, DC: U.S. Patent and Trademark Office.

Jiang, G., Zhang, L., Zhao, Z., Zhou, X., Duan, A., Xu, C., & Gao, J. (2008). Highly effective P-modified HZSM-5 catalyst for the cracking of C4 alkanes to produce light olefins. Applied Catalysis A: General, 340(2), 176-182.

8.0 APPENDICES
CPB 20004 PLANT UTILITIES AND MAINTENANCE
Individual Peer Evaluation (Task # _2__)
Name: Nasrul Awal bin Amerudin Student ID: 55213116074
Group Members Name Quality of Work Timeliness of Work Interaction Responsibility TOTAL(20)
1.Mohamad Nurhidayat bin Stafa5 5 5 5 20
2.Muhammad Syakir Naim bin Zaimin5 5 5 5 20
3.Nik Muhammad Zaim Ikmal bin Azhar5 5 5 5 20
PEER EVALUATION RUBRIC
Category for Evaluation Possible Scores
1 2 3 4 5
Quality of Work: Consider the degree to which the student team member provides work that is accurate and complete. Produces unacceptable work, fails to meet minimum group or project requirements. Occasionally produces work that meets minimum group or project requirements. Meets minimum group or project requirements. Regularly produces work that meets minimum requirements and sometimes exceeds project or group requirements. Produces work that consistently exceeds established group or project requirements.

Timeliness of Work: Consider the student team member’s timeliness of work. Fails to meet deadlines set by group. Occasionally misses deadlines set by group. Regularly meets deadlines set by group. Consistently meets deadlines set by group and occasionally completes work ahead of schedule. Consistently completes work ahead of schedule.

Interaction: Consider how the student team member relates and communicates to other team members. Behavior is detrimental to group. Behavior is inconsistent and occasionally distracts group meetings. Regularly projects appropriate team behavior including: listening to others, and allowing his/her ideas to be criticized. Consistently demonstrates appropriate team behavior. Consistently demonstrates exemplary team behavior.

Responsibility: Consider the ability of the student team member to carry out a chosen or assigned task, the degree to which the student can be relied upon to complete a task. Is unwilling to carry out assigned tasks. Sometimes carries out assigned tasks but never volunteers to do a task. Carries out assigned tasks but never volunteers to do a task. Consistently carries out assigned tasks and occasionally volunteers for other tasks. Consistently carries out assigned tasks and always volunteers for other tasks.

CPB 20004 PLANT UTILITIES AND MAINTENANCE
Individual Peer Evaluation (Task # __2_)
Name: Mohamad Nurhidayat bin Stafa Student ID: 55213116002
Group Members Name Quality of Work Timeliness of Work Interaction Responsibility TOTAL(20)
1.Nasrul Awal bin Amerudin 5 5 5 5 20
2.Muhammad Syakir Naim bin Zaimin5 5 5 5 20
3.Nik Muhammad Zaim Ikmal bin Azhar5 5 5 5 20
PEER EVALUATION RUBRIC
Category for Evaluation Possible Scores
1 2 3 4 5
Quality of Work: Consider the degree to which the student team member provides work that is accurate and complete. Produces unacceptable work, fails to meet minimum group or project requirements. Occasionally produces work that meets minimum group or project requirements. Meets minimum group or project requirements. Regularly produces work that meets minimum requirements and sometimes exceeds project or group requirements. Produces work that consistently exceeds established group or project requirements.

Timeliness of Work: Consider the student team member’s timeliness of work. Fails to meet deadlines set by group. Occasionally misses deadlines set by group. Regularly meets deadlines set by group. Consistently meets deadlines set by group and occasionally completes work ahead of schedule. Consistently completes work ahead of schedule.

Interaction: Consider how the student team member relates and communicates to other team members. Behavior is detrimental to group. Behavior is inconsistent and occasionally distracts group meetings. Regularly projects appropriate team behavior including: listening to others, and allowing his/her ideas to be criticized. Consistently demonstrates appropriate team behavior. Consistently demonstrates exemplary team behavior.

Responsibility: Consider the ability of the student team member to carry out a chosen or assigned task, the degree to which the student can be relied upon to complete a task. Is unwilling to carry out assigned tasks. Sometimes carries out assigned tasks but never volunteers to do a task. Carries out assigned tasks but never volunteers to do a task. Consistently carries out assigned tasks and occasionally volunteers for other tasks. Consistently carries out assigned tasks and always volunteers for other tasks.

CPB 20004 PLANT UTILITIES AND MAINTENANCE
Individual Peer Evaluation (Task # _2__)
Name: Muhammad Syakir Naim bin Zaimin Student ID: 55213116094
Group Members Name Quality of Work Timeliness of Work Interaction Responsibility TOTAL(20)
1.Nasrul Awal bin Amerudin 5 5 5 5 20
2.Mohamad Nurhidayat bin Stafa5 5 5 5 20
3.Nik Muhammad Zaim Ikmal bin Azhar5 5 5 5 20
PEER EVALUATION RUBRIC
Category for Evaluation Possible Scores
1 2 3 4 5
Quality of Work: Consider the degree to which the student team member provides work that is accurate and complete. Produces unacceptable work, fails to meet minimum group or project requirements. Occasionally produces work that meets minimum group or project requirements. Meets minimum group or project requirements. Regularly produces work that meets minimum requirements and sometimes exceeds project or group requirements. Produces work that consistently exceeds established group or project requirements.

Timeliness of Work: Consider the student team member’s timeliness of work. Fails to meet deadlines set by group. Occasionally misses deadlines set by group. Regularly meets deadlines set by group. Consistently meets deadlines set by group and occasionally completes work ahead of schedule. Consistently completes work ahead of schedule.

Interaction: Consider how the student team member relates and communicates to other team members. Behavior is detrimental to group. Behavior is inconsistent and occasionally distracts group meetings. Regularly projects appropriate team behavior including: listening to others, and allowing his/her ideas to be criticized. Consistently demonstrates appropriate team behavior. Consistently demonstrates exemplary team behavior.

Responsibility: Consider the ability of the student team member to carry out a chosen or assigned task, the degree to which the student can be relied upon to complete a task. Is unwilling to carry out assigned tasks. Sometimes carries out assigned tasks but never volunteers to do a task. Carries out assigned tasks but never volunteers to do a task. Consistently carries out assigned tasks and occasionally volunteers for other tasks. Consistently carries out assigned tasks and always volunteers for other tasks.

CPB 20004 PLANT UTILITIES AND MAINTENANCE
Individual Peer Evaluation (Task # _2__)
Name: Nik Muhammad Zaim Ikmal bin Azhar Student ID: 55213116116
Group Members Name Quality of Work Timeliness of Work Interaction Responsibility TOTAL(20)
1.Nasrul Awal bin Amerudin 5 5 5 5 20
2.Mohamad Nurhidayat bin Stafa5 5 5 5 20
3.Muhammad Syakir Naim bin Zaimin5 5 5 5 20
PEER EVALUATION RUBRIC
Category for Evaluation Possible Scores
1 2 3 4 5
Quality of Work: Consider the degree to which the student team member provides work that is accurate and complete. Produces unacceptable work, fails to meet minimum group or project requirements. Occasionally produces work that meets minimum group or project requirements. Meets minimum group or project requirements. Regularly produces work that meets minimum requirements and sometimes exceeds project or group requirements. Produces work that consistently exceeds established group or project requirements.

Timeliness of Work: Consider the student team member’s timeliness of work. Fails to meet deadlines set by group. Occasionally misses deadlines set by group. Regularly meets deadlines set by group. Consistently meets deadlines set by group and occasionally completes work ahead of schedule. Consistently completes work ahead of schedule.

Interaction: Consider how the student team member relates and communicates to other team members. Behavior is detrimental to group. Behavior is inconsistent and occasionally distracts group meetings. Regularly projects appropriate team behavior including: listening to others, and allowing his/her ideas to be criticized. Consistently demonstrates appropriate team behavior. Consistently demonstrates exemplary team behavior.

Responsibility: Consider the ability of the student team member to carry out a chosen or assigned task, the degree to which the student can be relied upon to complete a task. Is unwilling to carry out assigned tasks. Sometimes carries out assigned tasks but never volunteers to do a task. Carries out assigned tasks but never volunteers to do a task. Consistently carries out assigned tasks and occasionally volunteers for other tasks. Consistently carries out assigned tasks and always volunteers for other tasks.