Health and Safety in the Production Plant Environment

Health and Safety in the Production Plant Environment 4.1  INTRODUCTION Environmental and safety are the aspects that need to be considered in any production plant as these aspects could affect the production process, human health, and environment. Raw materials, product, by-product, and equipment are the most important elements included in safety measurement of production plant. In this chapter, every element that could be hazard to human and environment are discussed for example how raw materials and equipment could be a threat to human and how by-product could be a threat to environment. This chapter will be discussed on how to apply and implement Hazard Identification, Risk Assessment and Risk Control (HIRARC) according to designated plant. Enforcing the law of Occupational Safety and Health, HIRARC are greatest important. 4.2  SAFETY CONSIDERATION In order to maintain optimum productivity of plant production, employee and employers have to work together to ensure a safe work place for manpower activities. Plus, the need of safe work place environment and safety consideration to protect people from any hazard are utmost important. Efficient method to identify the risk involving process and implement the most practical and applicable measure to reduce and manage the risk is by implementing Hazard Identification, Risk Assessment and Risk Control (HIRARC). 4.2.1 Objective of Hazard Identification, Risk Assessment and Risk Control (HIRARC) HIRARC is a fundamental of basic risk management in management, operation, and practice of planning of a business. The purposes of HIRARC are as follows To identify any element that could be hazard to employee and others To consider the chances of any harms to be hazard in the circumstances of a particular case and possible severity obtained from those harms To enable employee planning an optimum safety measures to ensure the risks are controlled all the time 4.2.2.1 Material Safety Data Sheet (MSDS) MSDS is list of information on the hazards, safety and emergency measures related to specific products. All the information about the product and by product will be list in this sheet and the hazard of the product will also be identified. 4.2.2.2 Hazard Identifications Hazard identification means the identification of unwanted events that brings to materialisation of the hazard and the mechanism by which those unwanted events could occur. In other word, to identify hazard that can cause injury exist around the plant which can be separate into three main groups, health hazards, safety hazards, and environmental hazards. Therefore, it can be simplified that there are three types of common accident based on the past study. The utmost accident that happened in chemical plants is fire, followed by explosions and toxic release. 4.2.3 Chemical Hazard and Risks in the Workplace In chemical safety term, â€Å"hazard† refers to the inherent hazardous properties of a chemical or chemical operation, while â€Å"risk† generally means the likelihood of the hazardous properties of a chemical that may cause harm to the people surrounding and the severity of that harm. The risk dealing with chemical or in a chemical operation depends on the inherent hazard, the working environment, physical form of the chemical involved and the method of handling and lastly the operating procedures. 4.2.4 Chemical Hazards of Vinyl Acetate Monomer (VAM) VAM is a flammable, reactive, colourless liquid that is partly soluble in water. At higher levels, VAM odour could be sharp and irritating while it has fruity smell when at lower levels. Flammability VAM is a flammable liquid with flash point is below 37 °C. It form flammable vapour when mix with air at room temperature. Plus, its vapours are heavier than air and may travel a long distance to an ignition source such as a flame or electric spark and then flash back. Reactivity VAM is a reactive molecule and it could polymerize uncontrollably if did not handled or stored properly. Prolonged or intense exposure to heat, sunlight, ultraviolet light or x-rays may result in polymerization. Furthermore, spontaneous polymerization may also result from exposure to amines, strong acids, alkalis, silica, alumina, oxidizing agents. However, hydrolysation in water not considered as hazardous reaction. Health Effects VAM is irritating to the upper respiratory tract, skin and eyes. Potential hazard to eyes are irritation, redness and swelling but cause a low acute toxicity by all routes of exposure. Report based on lab experiment stated that high level inhalation exposure to VAM in animal results in deaths from pulmonary edema. Moreover, lifetime drinking water or inhalation exposure to VAM shown cancer effects in laboratory animals which tumor reported localize directly to attached part with VAM. Tumor observed at high exposure concentrations are not considered to be relevant to humans exposed to low concentrations under typical use conditions. Environmental Effects VAM tends to stay in the air where it is rapidly degraded by photochemical pathways. It has 0.6 days atmospheric half-life and 7 days hydrolytic half-life at pH 7 and 25 °C. Volatilization of VAM could occur once it is released to soil or water. In case of effect of VAM to water, VAM partitions mostly to the water where it undergoes hydrolysis and it is readily biodegraded by either anaerobic or aerobic mechanisms. Plus, VAM is considered to be moderately toxic to aquatic organisms. In conclusion, VAM considered non-harmful to environment. 4.2.5 Chemical Hazards of Acetic Acid At temperature above 16.7  °C, acetic acid is described as clear, colourless, combustible liquid with a pungent odour which is smell like vinegar. Flammability Acetic acid has a flash point of 39  °C. Autoignition’s temperature of acetic acid is at 427  °C and dilute acetic acid solutions are not combustible. Fire involving acetic acid should be fought upwind and from the maximum distance possible. Moreover, vapour explosion of acetic acid may occur indoors, outdoors, or maybe in sewer. Vapour travel to a source of ignition and flash back. Reactivity Overall, acetic acid is unstable at heating and freezing temperature. The vapour of acetic acid will form explosive mixtures with air. Plus, reaction of acetic acid with chromic acid, ammonium nitrate, sodium peroxide, nitric acid, phosphorus trichloride, or other oxidizers could cause fires or explosions. In case of hazardous decomposition, toxic gases like carbon dioxide and carbon monoxide may be released as acetic acid heated to decomposition. In concentrated form, acetid acid is highly corrosives. Health Effects Exposure to acetic acid may occur through inhalation, ingestion, skin contact and absorption through the skin. Based on lab experiment, glacial acetic acid is corrosive to tissues while concentrated acetic acid can cause moderate to severe burns. In addition, vapour acetic acid also can cause eye, skin, mucous membrane, and upper respiratory tract irritation upon exposure. In case of effect on humans, acetic acid may irritate eyes, mucous membrane, upper respiratory tract and skin. Environmental Effects Acetic acid environmental effects depend on the concentration and duration of exposure. It can be a threat to plants, animals, and aquatic as it comes in high concentration. Acetic acid exposed to environment as a vapour and it also soluble in water but it degrades rapidly into harmless substance once releases to environment. 4.2.6 Chemical Hazard of Ethylene Ethylene is a gaseous with boiling point of -104  °C at atmospheric pressure and it is stored in the liquid state under high pressure or at low temperature. Plus, it has solubility in water of 131 mg/l at 20  °C. Flammability Ethylene gas is highly flammable and explosive. Reactivity Ethylene is reactive substances because of double bond structure present in the alkenes. Due to its high reactivity, ethylene may undergo a lot different reactions such as oxidation, halogenation, alkylation, hydration, and polymerisation. Human Health Ethylene has low toxic level and risk to human health is minimal. It is identified from occupational exposure, general public exposure, and directly or indirectly exposure to environment but exposure to the gas can cause dizziness, lightheaded, and perhaps pass out. However lab experiment stated that ethylene is metabolised to ethylene oxide which can cause cancer from carcinogenic and mutagenic effect. Environmental Effect Due to its physical and chemical properties, ethylene is released mainly into the atmospheric compartment. About three quarters of atmospheric ethylene originates from natural sources, while one quarter is from anthropogenic sources. The main anthropogenic release is from burning of hydrocarbons and biomass. 4.2.7 Chemical Hazard of Oxygen Oxygen is an odourless, colourless, non-flammable gas. It is an oxidizing gas and could accelerates combustion. Oxygen is stored in cylinders at high pressure. Flammability Oxygen is a non-flammable gas Reactivity Oxygen vigorously accelerates combustion. Some non-combustible materials could burn with presence of an oxygen enrich atmosphere which is greater than 23%. Oxygen may form explosive compounds as exposed to combustible materials such as oil, grease, and other hydrocarbon material. Plus, heat applied on a container with oxygen can cause pressure increase hence cause container rupture. Human Health If oxygen is inhaled as much as 80% or above at atmospheric pressure for more than a few hours, it may cause nasal stuffiness, cough, sore throat, chest pain, and breathing difficulty. Moreover, breathing pure oxygen under pressure may cause lung damage and also central nervous system effects which cause dizziness, poor coordination, tingling sensation, visual and hearing disturbances, muscular twitching, unconsciousness and convulsions. Environmental Effect Highly concentrated sources of oxygen promote rapid combustion and therefore are fire and explosion hazards in the presence of fuels. 4.2.9 Personal Protective Equipment PPE is equipment that will protect the user against safety at work. By this, that person will be protected against one or more risks arising from chemical or chemical operation to the person’s health or safety. OSHA 1910.132 requires employers to determine the proper personal protective equipment for each hazard and to train any employees the guidelines how and when to wear safety protective equipment. Example of personal protective equipment listed for the use of handling of chemicals can be classified into following categories such as protective clothing, hand and foot protective gears, eye and face protective equipment and last but not least the respiratory protective equipment. This protective equipment may save your life in any danger situation. 4.2.9.1 Protective Clothing Protective clothing may refer which gear that literally can protect body or personal clothing from contact with dangerous chemical or any spread of contamination in workplace. This may include gowns, aprons and overalls. This chemical resistance that may affect the quality of the protective clothing are the resistance to degradation of the chemical due to the spread of chemical and the permeability of the chemical. Proper selection of protective clothing may result in a better in safety and health such as any dangerous chemical operations depends on the risks involved. Suitable material of protective clothing should be in good quality and appropriate form in order to provide protective if any danger occurred. Handling of chemical is a risk that may happen if not handled it properly, protection can be achieved by the personal clothing such as gowns and overalls made of synthetic material based of terylene or nylon with a water repellent finish. 4.2.9.2 Hand Protective Gears Hand protective gears may protect the hand and arm from any spills of the chemical and by prevent the spread of contamination. Generally gears are gloves used in industry. The selection of gloves usually must be based on the hazard occurred in the industry. In production of plant typically involved dangerous chemical when operating the process. In consideration, reference should be considered in order to categorise based on the chemical resistance properties and physical characteristic of the glove. The Chemical resistance, thermal protection and mechanical strength should be considered when in any different path of industry. Chemical resistance of the protection level depends on the glove material itself, the method of construction and thickness of the gloves. It should be aware that chemical resistance property of gloves may be adversely affected by abrasion and heat. For thermal protection gloves may made from neoprene which can be used for handling oils at low temperatures and co tton gloves can operate against moderate heat level. 4.2.9.3 Foot Protection Gears Foot protective gears protect the foot and leg from any dangerous chemical and to prevent the spread of contamination. Foot protection gears are shoes or boots. The footwear is selected based on the hazard involved and from the working environment. Mostly in plant, it is best to wear a safety boots, in order to prevent any unsafe accident occur. The type of injury should be related to the risk of the injury, the foot should at least be protected by well-made shoes. In cases it depends on the risk of the parts of the body being injured as example of ankle, knee or thigh. 4.2.9.4 Eyes and Face Protection Equipment In process of chemical operation, eye or face might be need a protective equipment in order to prevent any hazard of splashes of hot or any dangerous liquid chemicals, flying object as example of bursting containers, any dust or vapour that might be harmful to eye and face and lastly the intense light from the radiation emitted to the chemical process. By that, safety goggles should be wearing during the process operation. Other than that, face shield with adjustable head harness that may protect the face but not fully at the ayes area. Besides, eye and face protective equipment is also available in tints and shades for the protection of radiation or intense light from the chemical operation. 4.2.9.5 Respiratory Protective Equipment The potential of exposure in MEK plant may achieve 200 ppm, therefore the use of respiratory protective equipment is important in order to prevent the harmful of gas through the respiratory system. Respiratory protective system equipment also used to provide breathing air when working in any dangerous chemical environment where the presence of chemicals in air at high concentration. Be sure to consider all potential exposures when working in place where dangerous chemical exposure occurred. Combination of filters, prefilters or cartridges to protect against different types of form such as mist, vapour, dust and other chemical mixtures must be relates. Exposure of 3000 ppm and above, the situation is absolutely dangerous to life and health. The range of exposure must be less than 3000 ppm and if possible use a NIOSH approved self-contained breathing apparatus just to make sure the better quality and protection approved by the NIOSH. 4.3  RISK ASSESSMENT Risk analysis that is most effective is one that uses likelihood and severity in qualitative method. The result are present in a risk matrix is very effective method of communicating the distribution of the risk at the plant area workplace. The likelihood of an event occurring range from â€Å"most likely† to â€Å"inconceivable† are where the value came from. As shown in the table below of likelihood using the following values: Table 4.1: Likelihood Source: DOSH HIRARC Guideline The severity is categories into five elements. The increasing level of severity to an individual’s health, property and environment that is present in the table below: Table 4.2: Severity Source: DOSH HIRARC Guideline Table 4.3: Likelihood vs Severity Source: DOSH HIRARC Guideline The priority is determined based on the following risk category for necessary actions . Table 4.4: Risk Category Source: DOSH HIRARC Guideline 4.4  RISK CONTROL PREVENTIVE MEASURE HIRARC last step process is risk control. The assessed hazard will be assigned by risk control step for every control needed. Suitable control requires proper evaluating and selecting long and short term controls. The short-term measures to protect workers are implementing and the long term controls can be put in place when reasonably applicable. The five type of control started from elimination, substitution, engineering control, administrative control and last defences is personal protective equipment (PPE) which used when controls measure practicable and where additional protection is needed. The hierarchy of control to be applied is shown below. Figure 4.1: Hierarchy of Control (Source: DOSH HIRARC Guideline) 4.4.1 Elimination Elimination is the most effective hazard control which the step is by eliminating the hazard or in other words, physically removing it. Taking example when an employee is doing a job high above the ground, the hazard can be eliminatedby moving the piece they are working on to ground level to eliminate the need to work at heights. 4.4.2 Substitution Substitution is a preventive step involves replacing some task that might produces hazard with something that might not. This step quite similar to elimination but it required replaced task for the eliminated task. Taking example of process of replacing lead based paint with acrylic paint. 4.4.3 Engineering Controls The main objective of engineering controls is rather isolates people from hazards than eliminate the hazards. Capital costs of engineered controls tend to be higher than less effective controls in the hierarchy. However they may reduce future costs. For example, building a work platform is a chosen step rather than purchase, replace, and maintain  fall arrest  equipment. Plus, isolation could create a physical barrier between person and hazard. For example, using a remote control is much safer than manually control. 4.4.4 Administrative Controls Definition of administration controls is changing the way people work. This control types need an organization that could handle all the employees. The examples of its steps are including procedure changes, employee training, and installation of signs and warning labels. Administrative controls do not remove hazards, but limit or prevent peoples exposure to the hazards, such as completing road construction  at night when fewer people are driving. 4.4.5Personal Protective Equipment Personal protective equipment  (PPE) includes gloves,  respirators, hard hats,  safety glasses,  high-visibility clothing, and safety footwear. PPE is the least effective means of controlling hazards because of the high potential for damage to render PPE ineffective. Moreover, some PPE, such as respirators, increase physiological effort to complete a task and, therefore, may require medical examinations to ensure workers can use the PPE without risking their health 4.5  RELEVANT OSH LEGISLATION AND REGULATION The legislation and regulation for occupational, safety and health need to be obey for every processing plant. The act and regulations ensuring both employer and employees to take safety and health issue in working area seriously. Safety and health objective is to provide a good safe working condition and to control plant or factory operation with respect to the safety, health and welfare of the employer and employee. The regulations need to be follow which is The Factory Act 1948 and Control of Industrial Major Accident Hazard (CIMA) 1996. Manufacture, Storage and Import of Hazardous Chemicals Rules, 1989. As stated under OSHA 1994 regulation is Employer’s Safety and Health General Policy Statement 1995, Control of Industrial Major Accidents Hazards 1996, Safety and Health Committee 1996, Classification, Packaging and Labelling of Hazardous Chemical 1997, Safety and Health Officer 1997 and Use and Standards of Exposure of Chemical Hazardous to Health 2000. Duty to implement s afety and health act are under responsible of both employer and employees and Occupational Safety and Health Act OSHA 1994 summarized the duties of employer and employees as below. Duties of Employer: Provide and maintain safe plant and system of work Make arrangement for safe use operation, handling, storage, and transportation of plant and substances. Provide instruction, information, training and supervision. Provide and maintain safe pace of work and means of access to and egress from any place of work. Provide and maintain safe and Healthy working environment and adequate welfare facilities. Duties of Employees: Reasonable care for safety and health him/herself and others. Co-operate with employer and others. Wear and use PPE. 4.6  MAJOR EQUIPMENT AND POTENTIAL INCIDENT IN PROCESS PLANT Table 4.5: HIRARC Major Equipment in Process Plant Table 4.6: HIRARC Potential Incident in Process Plant Hazard Identification Risk Analysis Risk Control No Hazard Identifies Potential Accident Accident Consequent Types of injury Likelihood Severity Risk (Likelihood x Severity) Preventive Control measure Person in charge 1 Piping Leakage, Rupture Explosion Fatalities 4 4 16 (High) Detector Preventive Maintenance Installation, Operation and Maintenance

Attitude, Meaning Symbolism and Allegory Essay

Part 1: Discussion with Others on Symbolize Pool, Highway and Character Needy The â€Å"Swimmer† is one of a long familiar works of John Cheever (1964) which is illustrative of his suburban stories in which John relates individuals living by using symbolize themes such as Pool, highway, character Needy, suburbia and foreshadowing. How these symbolizes used by John Cheever to narrate his story summarize the realisms, surrealism and humoristic description of suburban life. I believe the pool is the excavation of water. But in John Cheever’s ‘the swimmer†, the pool is the subversion of the nature which represents the place of characters. Cheever relates his story that the confining nature of the suburbs is inexplicit in the approximation of the pool itself. It is the structure by which the water, the most important natural of all earthly and an essential of life is set for activities or leisure. John Cheever considers in story, the life of in the suburban as a pool of individuals that share same interest of living. In John Cheever’s story, highway is the swimming pools of his county used by Neddy Merril (369) as a means of transportation back to his house. The author point of view Needy used the pool as highway to travel from neighbor to neighbor. From pool to pool/ He travel through the dark underbody of suburbia, and discover the labor of both his and his community’s lives. The highway is the path that allows Neddy to participating his community’s lives and discovers his own life. The Character, Needy consider himself to be an adventurer or a pilgrim when he determines and continues as such even if the end of the story and his unusual decision describe near. As Neddy goes into one pool out to another, he considered himself as reborn each time, finding out that the world is not the informal place he at one time comprehended. He considered the word as a complex that place he never comprehends because of the diversity of human activities and needs. Foreshadowing and alcohol two symbolize that are important to the outcome of the story. In the Swimmer of John Cheever, the foreshadowing designated what is wrong between the realities and the surreal materialize. The author used the foreshadowing by means of the simple description everyday objects and events. For example the example pool, strange approaches storm despite the perfect sun moment the smell and signs of autumn. The author did not specify to the reader that this man getting a hallucination or something is wrong. The Swimmer of John Cheever represents the alcohol as a motif and the symbol and important to several levels. As a motif alcohol nearly likes a handshaking or a tranquilizer and polite, temporary motion. It is the main object around which all social or parties’action rotates. This is mentioned at the beginning of the story when the narrator talks about how nearly everyone â€Å"drank too much†. The alcohol gesture symbolizes an invitation to form aside reality and join others in a covering of reality. The ready find out that Neddy covering the reality and drinking was only the part of the case There may be different interpretation by the readers because each reader has his way to comprehend or understand the themes or the entire story. Certain readers amend or contrast what the author or narrator develops in his novel or book. Some readers explain things according the way he likes things to be, while others exculpate what someone has developed his story. For example there are many interpretation of the pool in the â€Å"Swimmer† of John Cheever. Part 2 I believe when you dream of water. it means the individual will be a powerful and rich man. The water defines the prosperity and tranquility of life according of certain culture. The snake defines the manhood and the fear. When some dreams of snake, means it will give a birth of boy and he will be a group leader. Falikou from another country had a different point about these dreams. In my country, when someone dreams of water means a long lasting problem which extend to whole country; wile, when someone dreams of snake defines poverty and physical distress. As far as my concern, the multiples interpretation of the same story by different readers because his reader has his believe and his culture in addition to his understanding of  the story. That why there are humorist, naturalist, surrealist, existentialist and anthropologist. These different categories of people will have different interpretation of same story. The multiple interpretations of the same story occur when different opinions of different categories of people amend or contrast the writers ‘stories, novels or books. References Cheever, J. (1964). Author of â€Å"The Swimmer† in Introduction to Fiction Poetry, Drama, and Writing. X. J. Kennedy. Dana Gioia

The Grail As A Symbol Of Divine Grace - 1695 Words

The Holy Grail is the mystical cup that Christ used at the last supper and it is believed that it holds special powers. The Grail was considered to be a bowl or dish when first described by Chrà ©tien de Troyes (Holy Grail – Crystalinks). Hà ©linand of Froidmont described the Grail as a wide and deep saucer (O’Neal 79). Other authors had their own ideas: Robert de Boron portrayed it as the vessel of the Last Supper; and Peredur had no Grail per se, presenting the hero instead with a platter containing his kinsman s bloody, severed head (Holy Grail – Crystalinks). In Parzival, Wolfram von Eschenbach, citing the authority of a certain (probably fictional) Kyot the Provenà §al, claimed the Grail was a stone that fell from Heaven, and had been the sanctuary of the Neutral Angels who took neither side during Lucifer s rebellion. The authors of the Vulgate Cycle used the Grail as a symbol of divine grace. Galahad, illegitimate son of Lancelot and Elaine, the world s greatest knight and the Grail Bearer at the castle of Corbenic, is destined to achieve the Grail, his spiritual purity making him a greater warrior than even his illustrious father. Galahad and the interpretation of the Grail involving him were picked up in the 15th century by Sir Thomas Malory in Le Morte d Arthur, and remain popular today. The Grail is first featured in Perceval, le Conte du Graal (The Story of the Grail) by Chrà ©tien de Troyes, who claims he was working from a source book given to him by his patron,Show MoreRelatedHow I Read Literature Like A Professor Notes3177 Words   |  13 Pagesrebirth, fertility) †¢ Comedic Traits- hero fights their own demons and becomes victorious/ downfall is threatened but avoided †¢ WHAT TO LOOK FOR- o Patterns o Interpretive opinions o Resemblance to previous works o Symbols Chapter 1- The Quest †¢ Always a quest (knight, dangerous road, Holy Grail, dragon, evil knight, and princess) †¢ Always a quester †¢ A set destination †¢ A stated reason to go there †¢ Challenges the protagonist faces en route †¢ An actual reason to go there †¢ The motivation for the questRead MoreWhat Are The Five Characteristics Of A Quest?1901 Words   |  8 Pagesand keeping them safe, keeping their dignity intact, being faithful to someone or something, the need to get home. 30.) Rain can represent life and restoration, spring, and even the natural order of things. 31.) Rainbows and represent something divine in nature, or even a connection between heaven and earth. 32.) Fog can represent confusion, or a barrier to clarity, or a clouded understanding. 33.) Snow has many representations, it can represent peace, desolation, something clean, something playfulRead MoreHow to Read Literature Like a Professor Outline Essay3160 Words   |  13 PagesHow To Read Literature Like a Professor Outline Chapter 1 – Every Trip Is a Quest (Except When It’s Not) Main Ideas: To have a quest, a novel must have A knight A dangerous path A holy grail An evil knight A dragon A princess The quest is always educational and provides knowledge of ones self Chapter 2 – Nice To Eat With You: Acts of Communion Main Ideas: It is a communion â€Å"Whenever people eat or drink together...† Breaking bread together is an act of sharing and peace Read MoreOrganisational Theory230255 Words   |  922 PagesNeo-modernist organization theory: surfing the new wave? Postmodernist organization theory: new organizational forms for a new millennium? Postmodernism as a philosophy: the ultimate challenge to organization theory? Reflective organization theory: symbols, meanings and interpretations Reflexive organization theory: critical theory and psychoanalysis The evolution of management as reflected through the lens of modernist organization theory Perspectives and challenges 2 54 100 148 198 242 282 330

Definition and Examples of Subordination in English

Subordination in English grammar is the process of linking two clauses in a sentence so that one clause is dependent on (or subordinate to) another. Clauses joined by coordination are called main clauses  or independent clauses. This is in contrast to subordination, in which a subordinate clause (for example, an adverb clause or an adjective clause) is attached to the main clause. Clausal subordination is often (but not always) indicated by a subordinating conjunction  in the case of adverb clauses or a relative pronoun  in the case of adjective clauses. Examples and Observations In the sentence, I swear that I didnt dream it, where one clause is part of the other, we have subordination. The higher clause, i.e., the whole sentence, is the main clause and the lower clause is a sub-clause. In this case, there is an element which actually marks explicitly the beginning of the subordinate clause, namely that. (Kersti Bà ¶rjars and Kate Burridge, Introducing English Grammar, 2nd ed. Hodder, 2010) Adverbial Subordinate Clauses While Fern was in school, Wilbur was shut up inside his yard. (E.B. White, Charlottes Web. Harper, 1952)  All the animals capered with joy when they saw the whips going up in flames. (George Orwell, Animal Farm. Secker and Warburg, 1945)One summer morning, after I had swept the dirt yard of leaves, spearmint-gum wrappers, and Vienna-sausage labels, I raked the yellow-red dirt, and made half-moons carefully, so that the design stood out clearly and masklike. (Maya Angelou, I Know Why the Caged Bird Sings. Random House, 1969)[U]nless one is inordinately fond of subordination, one is always at war. (Philip Roth, The Dying Animal. Houghton Mifflin, 2001) Adjectival Subordinate Clauses Fern . . . found an old milking stool that had been discarded, and she placed the stool in the sheepfold next to Wilburs pen. (E.B. White, Charlottes Web. Harper, 1952)Moses, who was Mr. Joness especial pet, was a spy and a tale-bearer, but he was also a clever talker. (George Orwell, Animal Farm. Secker and Warburg, 1945)We lived with our grandmother and uncle in the rear of the Store (it was always spoken of with a capital s), which she had owned some twenty-five years. (Maya Angelou, I Know Why the Caged Bird Sings. Random House, 1969)In the cutting room, there were twenty-five men at work, about six to a table, and the Swede led her over to the oldest of them, whom he introduced as the Master. (Philip Roth, American Pastoral. Houghton Mifflin, 1997) Analyzing Subordinate Structures Subordination-heavy sentences are probably our most common type of sentence, either spoken or written, though they are more complicated than they may seem at first glance. In fact, this sentence by Thomas Cahill seems quite ordinary until we examine it more closely: In the time-honored fashion of the ancient world, he opens the book at random, intending to receive as a divine message the first sentence his eyes should fall upon. —How the Irish Saved Civilization (57) Cahills basic sentence about St. Augustine is he opened the book. But the sentence begins with two orienting prepositional phrases (In the time-honored fashion and of the ancient world) and adds detail at the end with a prepositional phrase (at random) and a participial phrase (intending . . .). There is also an infinitive phrase (to receive . . .) and a subordinate clause (his eyes should fall upon). For the reader, comprehending this sentence is much simpler than describing it. (Donna Gorrell, Style and Difference. Houghton Mifflin, 2005) Cognitive Relations [T]he notion of subordination will be defined here exclusively in functional terms. Subordination will be regarded as a particular way to construe the cognitive relation between two events, such that one of them (which will be called the dependent event) lacks an autonomous profile, and is construed in the perspective of the other event (which will be called the main event). This definition is largely based on the one provided in Langacker (1991: 435-7). For instance, in Langackers terms, the English sentence in (1.3), (1.3) After she drank the wine, she went to sleep. profiles the event of going to sleep, not the event of drinking the wine. . . . What matters here is that the definition pertains to cognitive relations between events, not any particular clause type. This means that the notion of subordination is independent of the way in which clause linkage is realized across languages. (Sonia Cristofaro,  Subordination. Oxford University Press, 2003) Subordination and the Evolution of Languages Many languages make very sparse use of clause subordination while making much freer use of clause conjoining. We can extrapolate that the earliest languages had only juxtaposition of clauses, then developed markers of coordination of clauses (like and), and only later, perhaps much later, developed ways of signaling that one clause was intended to be understood as playing a role inside the interpretation of another, i.e. marking subordination of clauses. (James R. Hurford, The Origins of Language. Oxford University Press, 2014)