Showing posts with label MEDICAL SCIENCE. Show all posts
Showing posts with label MEDICAL SCIENCE. Show all posts
Relevance of Health Safety, and Environment  to Industry, the employer and employee, and the Community.
Health: Physical Condition.

 1. Every individual wants to be fit and healthy to enable him work to earn a living.
 2.   The employer needs his employee to be of good health to be able to perform to standard required for the achievement of set goals.
  1. The community needs healthy members who will contribute effectively to community affairs- financially, physically and mentally.
  2. The nation needs citizens who would pay taxes  as well as contribute physically and mentally.
  3. Families need their breadwinner and companion. 
Safety: A state of being free from danger or harm (injury or damage).
 1.  Every individual wants to be safe for a worthy life.         
  2. A business organization needs its employees to be safe for continuous 
     operation to meets targets and objectives, as well as to conserve its vital
     resources.
 3. Families, communities and the nation all need their kins-folk to be safe to continue to provide needs, service, and contributions-physical, mental and financial.
Environment: The air, water, and land in which people, animals and plant live
sustain the quality of life of the people and activities located within its confines.
The foregoing paragraphs emphasize the relevance of health, safety, and environment to industry, its people, its assets, and the environment within which they are located, and the reason why every effort deserves to be made to prevent negative activities or conditions that would impact adversely on them that would in turn harm people, assets and the environment.

ACCIDENTS.
Industries activities generally involve people, machines, materials, chemicals and the
environments. In the course of operations in which these elements interacts, it does
happen that one or the elements is upon adversely and there is injury or damage, and
it is said an accident has occurred. The negative actions or situations are usually
unplanned, unexpected, and the resultant impact unwanted. Hence the definition of
an accidents as ‘an’ unplanned and unwanted occurrence caused by unsafe acts and
unsafe conditions which result in injury or damage. and sometimes both injury and
damage, or neither (the near miss)

CONSEQUENCES OF ACCIDENTS
Accidents impact adversely on the industry, its  people,plants,machinery,equipment
and the environment within which the industry is located. When an accidents occurs
in an industry, directly affected are usually-
   1.  The injured employee: physical pain, mental agony, disability (temporary or permanent), and loss of leisure, earning, and life.
   2.The company: economic loss, production loss, time, reputation, possible litigation.
       Usually affected indirectly are:-
   1. Family of injured employee: loss of breadwinner.
   2. Community: contributions-financial, mental, physical.
  3. The Nation: Taxes paid by the company and the employee.
 The reasons for which accidents are considered undesirable are usually summarized
as-
   1. humanitarian.
   2.Economic.
   3. Legal.
   4. morale.
   5. Reputation

Since these consequences are undesirable it is imperative that effort should be
directed at preventing  accidents.  This can be achieved through an understanding of
the factors responsible for the occurrence of accidents and eliminating them or
making provisions for effectively controlling them or mitigating the effect of the
occurrence.

ACCIDENT CAUSES
Research has establish that accidents are caused by unsafe acts and
unsafe conditions.
Unsafe acts are defined  are defined as actions taking or performed by someone without due regard for personal safety, that of colleagues or other persons in the vicinity .  These are acts usually contrary to rules and regulations, or accepted standard practices and procedures – they are ilegal acts .

ACCIDENT PREVENTION MEASURES.
       With the acceptance of the assertion that accidents are caused, it is also accepted that identified as being responsible for unsafe acts and the existence of unsafe conditions. They are said to act unsafely and permit the existence of unsafe conditions because of the following defects in them-
    1. Does not know: ignorance, not trained ,not instructed, not informed.
     2.Cannot: physically or mentally unable.
    3. Does not want to: wrong attitude.
      Measures to prevent accidents would therefore seek to identify and correct the unsafe acts of people and the unsafe conditions in the work environment, as well as identify and correct the defects in the people, for a permanent solution to the accidents problem. Measures adopted are therefore those of-

       1. Engineering.
        2. Education.
        3. Enforcement.
        4. Encouragement.
       Engineering takes the unsafe conditions out the work environment: Education takes the defects out of the people through training, induction,nstruction,rules, policies, procedures,seminars ,etc.;Enforcement ensures that people comply with and apply all that they have been taught and instructed to do through effective supervision,inspections,audits, and reports ;encouragement by recognition, incentives,awards,and promotion, boosts the morale of employees and makes them react more positively to the requirements of the employment, which has a salutary effect on production.

BENEFITS DERIVABLE FROM SAFE OPERATIONS.
Safety pays great dividends to all  stakeholders.
The company has to continued service of a healthy , competent and
efficient workforce, which ensures achievement of targeted
quality and quantity of production, conservation of funds that would
otherwise have been spent on medical, compensation, and lost time
bills, and greater profits.

The employee remains healthy and fit, and is in position to achieve
his life ambition. He is able to fully enjoy the company of his family
and associates, his leisure and hobbies. He remains in the
employments and is employable in an appropriate job, with full
earning capability. He has full hope of improved conditions and
elevation if he continues to give good service unhindered by injury or
ill health.
The family is happy the breadwinner is always available to provide
for them the pleasures and necessities of life.
The community continues to reap the benefits of the contributions of
a worthy member.
Government earns increased revenue from the increased profits
earned by the company, and from, the employee who pays tax from
his earnings.

          HAZARDS AND EFFECTS MANAGEMENT PROCESS-
          The process for those critical operations and installation should include
           An inventory of the major hazards to the environment and to the health and safety of people of all the activities, materials, products and services; and
          An assessments of the related risks, implementation of measures to control these risks and to recover in case of control failure.
           Planning and procedures-adequate standards and procedures shall be in place and understood at the appropriates organization levels.preparation,review and distribution of all key reference documents shall be adequately controlled.
          HSE; standards include;procedures;and work instructions; permit to work; concurrent operations; emergency response procedures (including medical emergencies) shall be regularly tested.
          Implementation and monitoring- HSE performance targets shall be set to ensure progression towards the long-term goals of no harm to people and n o damage to the environment. performance indicators shall be established, monitored and results reported in away that can be externally verified. All HSE incidents and near misses with significant actual or potential consequences shall be thoroughly investigated and reported.

          HSE RULES AND PROCEDURES.
          HSE rules are meant to ensure that the company’s HSE objectives are realized. They enable the policy of the company to pursue the goal of no harm to people- its staff, other persons, and to protect the environment.
          These set rules and procedures are required to be adhered to while executing any task. Strict adherence will prevent accidents that could result in injury to people, or  loss of product and lead to pollution of the environment and exposure of persons to health hazards.

          PERSONAL PROTECTIVE EQUIPMENT  (PPE)
          INTRODUCTION
          The Board of Directors of the National Safety Council (US), in 1949, declared, in a former statement of policy;  ‘ The elimination of accidents is vital to the public interest.  Accidents produces economic and social loss impair individual and group productivity, cause inefficiency, and retard the advancement of standards of living’. The thus emphasis the need to prevent accidents and protect the workers , using every possible advice.
          The primary approach in any accident prevention effort is the correction of the physical environment so that accident cannot occur.   However, it does not happen sometimes that the nature of the operations requires that the personnel should also be safe guided, by equipping them individually with Personal Protective Equipment (PPE).  Then it should be noted that these PPE should be considered only as a ‘second line or last line’ of deface in accident prevention. PPE does not prevent the accident or remove the hazard it only serves to prevent contact with the hazard , minimize the effect of the hazard on the worker or reduce the severity of the injury from the accident.  It will be wrong for a worker to deliberately expose himself to a hazard because he is wearing some form of protective equipment.

          DEFINITION
          Personal Protective Equipment are pieces of equipment; gadgets, and apparels used or worn by workers to protect them against the hazards, existing in their work situation or environment .
          The provision of PPE + by management, and their use by employees is a statutory requirement ideally design to protect or minimize the impact of accidents on a worker in a work site.

                                          TYPES AND KINDS OF PPE
  1. HEAD AND PROTECTION.
  2.  SAFETY HATS: These are equipment  used to protect the head against falling or flying objects, menace by bumps, liquids leaking from facilities. They are made of metal, plastic, glass fiber impregnated with resin, and some non-metallic materials.  Impact resistance is essential.   Where contact with energized circuits is possible, only hats that meet the   requirement of class B. ANSI Z89.1(i.e tested at 20 volt). They are different types shapes styles and shades for different work situation
  1. EYE PROTECTION: They are various types and styles of eye protection equipment mainly, for protection of the eyes against flying objects and particles, splashes of corrosive liquids or molten metals, dust , and harmful radiations.  They include:
       Cup Goggles, Cover Goggles, Welders’ goggles, Melters’ Goggles, Protective Spectacles e.t.c .
  1. FOOT PROTECTION: Consists of safety shoes boots, job master, and swamp shoes. 
  1. FACE SHIELD:  They are used for the protection of the face and neck against light impact, flying particles, hazardous chemicals, heat, radiation,
  1. Hand Gloves: They are used for protection of fingers palms and hands from burns, cuts, and bruises, scratched.
  1. EAR PROTECTION: Assorted types and styles, design for the protection of ear from high damaging sound.  They are Ear muffs and Ear plugs.
  1. RESPIRATORY EQUIPMENT: For the protection against inhalation of dangerous substances e.g. dusts, fumes, and tiny air particles.
  1. OVERALL/APRONS:  Protect the body from contact with heat, corrosive and/or toxic substances.
  1. FIRE SUIT: For fire fighting
                          REASONS FOR NOT WEARING PPE
It is commonly observed that some workers resent using the PPE they are
expected to wear why performing their duties.  The advance reasons with
psychological, egotistical and economic undertones these includes:-
          Discomfort, due to weather conditions
          Wrong Size (oversize/undersized).
          Due not keep pace with fashion trends.
          Exposure of grade of workers.
          Payment for the equipment.
MEASURES TO ENSURE EFFECTIVE USE OF PPE.
Effort must be made to persuade workers to use PPE issue to them
attention should be drawn to the fact that it is statutory requirement.
They should be a proper education and the need and the importance of the use of PPE.
The following measures are recommended:-
  1. EDUCATION: Workers should be thoroughly educated in the need and the importance of PPE. .These will enable them to bear whatever discomfort the equipment might cause them. They will be concerned with their safety rather than their ego.
  1. CHOICE OF THE STYLE: Resentment due to vagaries of fashion can be solve by allowing employees to choose from a group of pre- selected style of PPE. They will thus have no excuse for refusing to use them.
  1. AS A CONDITION FOR EMPLOYMENT: The compulsory use of PPE should be a condition for employment. 
  1. FREE ISSUE OF PPE: All PPE that an employee must wear while performing his job should be provided free of charge.
5.            SANCTION FOR NOT WEARING IT: There should be penalty for an employee failing o wear provided PPE where it should be worn.



 

ABSTRACT

    This presentation will enlighten us on what computed tomography scanning of the body is all about, what are some common uses of the procedure, how should a patient prepare, what does the equipment look like, how does the procedure work, how is the CAT scan performed, what will the patient experience during and after the procedure, who interprets the results and how do the patient get them, what are the benefits and risks, what are the limitation of CT scanning of the body.

ABSTRACT

The man of 21st century is a man of comfort, totally depending and cannot spend a second without technology. Various equipment such as wireless phones, electrical/electronics equipment etc. has become an integral part of his life. Large numbers of these devices generates electromagnetic radiations. Also these electromagnetic devices have various uses in domestic, industries and medicine. In spite of all these important applications the electromagnetic fields, imposes great danger to the human body.

Electromagnetic radiation is a form of energy that is produce by oscillating electric and magnetic disturbance, or by the movement of electrically charged particles travelling through vacuum of matter. When something in the environment is called a pollutant, it implies that it is somehow harmful to nature and to human beings. This paper discusses the effect of the electromagnetic pollution on the human body and also the various sources responsible for electromagnetic pollution and safety guide to EMRs. This paper throws light on the other side of the emerging technology.

                                         INTRODUCTION

Electromagnetic radiation itself is a form of energy that is produce by oscillating electric and magnetic disturbance, or by the movement of electrically charged particles travelling through vacuum of matter. Electromagnetic radiations can be classified into two types ionizing radiation and non-ionizing radiation. They are called so based on whether they are capable of ionizing atoms and breaking covalent bonds or not. Ultra violet and higher frequency radiations, such as X-rays or gamma rays are ionizing.

…INTRODUCTION CONTD.

infrared waves, visible light, ultraviolet light, x-rays and gamma rays. Wave frequency differentiates one class of radiation from another. Figure 1 is a graphical representation of the spectrum of electromagnetic energy or radiation in ascending frequency (decreasing wavelength). Electromagnetic pollution is due to frequencies which are oscillating slower than visible light waves. But x-rays and gamma rays (which oscillate faster than visible light) are highly dangerous but they are rarely present at our dwelling places and workplaces. Electromagnetic pollution is everywhere.

…INTRODUCTION CONTD.

These pose their own special effects on the life of human beings. Non-ionizing radiation is associated with two major potential hazards that are electrical and biological. Moreover, induced electric current caused by radiation can generate sparks and create a fire or explosive hazard. The electromagnetic spectrum includes several different classes of radiation: low frequency, radio waves, microwaves,

 

SOURCES OF ELECTROMAGNETIC RADIATIONS


In the last six years, researchers has made a lot of breakthroughs in understanding how electromagnetic fields affect living systems, not just humans, but all living systems. Electro-magnetic fields (EMFs) come from everything that uses electricity in our world today. Fluorescent lights the most used form of light in NEDDI or even in our homes have transformers. Another large source of EMF in our environment is motors. Electric shaver is an example. In fact, studies have shown that just a few minutes exposure to that kind of a field will affect you for more than 24 hours.

The biggest sources of electromagnetic radiation in our environment are transformers and electric motors.

…SOURCES OF EMRS CONTD


Other devices responsible for electromagnetic pollution are as follows:

   Computers and related equipment

   Cellular (mobile) phones

   Information networks

   Electrical appliances

   Electronic equipment

   Cell phone masts

   Microwave ovens

   Cables and conductors

   High and low voltage power lines and many others.

ELECTROMAGNETIC RADIATIONS (EMRs)

Low Frequency EMRs

Strong electromagnetic fields (EMFs) of low frequency about 50 to 60 cycles per second (hertz, or Hz) are very harmful. It is possible to shield a house from electric field generated by a nearby power lines but is difficult to provide shielding from magnetic field generated by them. The magnetic field can be shielded by using the underground transmission system but the cost is much higher than the overhead transmission line system. The long-term exposure of low frequency EMFs may give rise to various health problems especially fatigue, irritability, aggression, hyperactivity, sleep disorders and emotional instability.

 

Large numbers of individuals are becoming hypersensitive to EMR. EMR exists around power lines, power tools, boilers, electric stoves, heaters, freezers and television sets when in use using an electric iron or an electric keyboard or working with handheld power tools can quickly drain our energies. Stray currents and radiating fields can be present around us even if appliances are switched off. AC electric fields do not disappears when an appliance is switched off, only AC magnetic fields disappears.

High Frequency EMRs

High frequency electromagnetic field is mainly generated by the cellular phones, microwaves and antennas. High frequency EMFs is due to radio frequency energy in the frequency range of low, medium, high, very high, ultrahigh frequencies or microwaves and is often referred to as radio energy. The term radio frequency energy is used for all the frequencies between 30kHz and 300GHz. Biological effects of radio frequency (RF) energy are:

 

The RF energy heats up the tissues in a similar manner a microwave oven heats the food and it can be dangerous in case of prolong exposure.

Tissues can get damaged if exposed to RF energy because they are not capable of dissipating large amount of heat generated. This can lead to skin burns, deep burns and heat strokes.

Eyes are most affected by the RF energy because the lack of blood flow to cool the cornea can lead to cataract.

RADIO FREQUENCY RADIATIONS

               Cellular Phones EMRs. Cellular phones work by emitting radio frequency radiations that are transmitted through the antenna in the phone. While using the cellular phone, the device and thus its antenna end up right next to the head and the radiation from it easily affect the brain.

               Cordless Phones EMRs Swedish scientists have found that cordless phones give rise to the risk of cancer. Researchers studied malignant brain tumor patients on the basis of their usage of cell phones and cordless phones and they found that cancer risk was increased for those who used cordless phones and the user which use both have even higher risk.

 

HAZARDS OF ELECTROMAGNETIC POLLUTION

Electromagnetic pollution has various hazards like electrical hazards, fire hazards, biological hazards and DNA fragmentation.

               Fire Hazard

Extremely high power electromagnetic radiation can cause sparks (electrical arcs). When an induced voltage exceeds the breakdown voltage of the surrounding medium (e.g. air). These sparks can then ignite flammable materials or gases, possibly leading to an explosion. This can be a particular hazard in the vicinity of explosives or pyrotechnics, since an electrical overload might ignite them.

 

This risk is commonly referred to as Hazards of Electromagnetic Radiation to Ordnance (HERO). On the other hand, the risk related to fuelling is known as Hazards of Electromagnetic Radiation to Fuel (HERF).

               Biological Hazard

The most understood and discussed biological effect of electromagnetic fields is dielectric heating. For example, touching or standing around an antenna while a high-power transmitter is in operation can cause severe burns. These are exactly the kind of burns that would be caused inside a microwave oven. This heating effect varies with the power and the frequency of the electromagnetic energy. A measure of the heating effect

 

is the Specific Absorption Rate (SAR), which has units of watts per kilogram (W/kg). The IEEE[5] and many national governments have established safety limits for exposure to various frequencies of electromagnetic energy based on SAR, mainly based on the International Commission on Non-Ionizing Radiation Protection (ICNIRP) Guidelines.



               Electrical Hazard

Strong radiation can induce current capable of delivering an electric shock to persons or animals. It can also overload and destroy electrical equipment. The induction of currents by oscillating magnetic fields is also the way in which solar storms disrupt the operation of electrical and electronic systems,

 

causing damage to and even the explosion of power distribution transformers, blackouts and interference with electromagnetic signals (e.g. radio, TV, and telephone signals).

               DNA Fragmentation

In 2009 the study at the University of Basel in Switzerland found that intermittent (but not continuous) exposure of human cells to a 50Hz electromagnetic field at a flux density of 1mT induced a slight but significant increase of DNA fragmentation in the Comet assay. However this level of exposure is already above current established safety exposure limits.

SAFETY GUIDELINES

There are two major sources of electromagnetic pollution and their effects are different on human body, so different protection measures are required for both low frequency and high frequency electromagnetic pollution.

Low Frequency EMP:

             It must be tried to minimize electromagnetic pollution, especially while sleeping when the pineal gland is most susceptible.

             Also one should sleep in the dark or at least with a dim lamp to protect the immune-stimulating hormone melatonin.

 

             Preferably all power points in the bedroom should be switched off and all electric leads with 2-prong plugs should be unplugged before going to sleep.

             If the head faces a wall with power-points or other electric wiring inside the wall close to the bed, then bed should be moved towards the middle of the room.

             While using electric blankets, the bed should be warmed beforehand and the plug should be removed before going to bed.

             It should be tried not to habitually remain within a few meters of a working electric appliance.

High Frequency EMP

             Human beings should spend less time on the cellular phones.

             Cellular phones with a lower specific absorption rate (SAR) should be used. Use of cell phones should be limited in case of children below 10 years.

             It should be avoided to make calls with a low signal and low battery as the cell phone will generate more radiation in an effort to compensate for it.

CONCLUSION

In conclusion, I want to say that electromagnetic fields are harmful and can have adverse effect on human body depending upon the intensity and frequency of the electromagnetic field exposed to. It is always a good idea to avoid unnecessary exposure to electromagnetic fields whenever possible. Though it is true that technology has made life very comfortable but it is at the expense of our health, it is our first duty to save our lives. Thus we should use technology wisely so that we can save ourselves as well as mother earth. Remember Health is wealth and wisdom is profitable to direct.

REFERENCES

Ø Ali Zamanian and Cy Hardiman, “Electromagnetic Radiation and Human Health: A Review of Sources and Effects”, Summit Technical Media, July 2005.

Ø Focke F, Schuermann D, Kuster N, Schar P, “DNA Fragmentation in Human Fibroblasts Under Extremely Low Frequency Electromagnetic Field Exposure”, Mutation Research 683(1-2), November 2009.

Ø Professor John E. Moulder, Ph.D., Electromagnetic Fields and Human Health.

Ø Ankur Mahajan, “Human Health and Electromagnetic Radiations”, June, 2013.

Ø "Standard for Safety Level with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3KHz to 300GHz". IEEE STD (IEEE) C95.1. Oct 2005.

Ø International Commission on Non-Ionizing Radiation Protection, “Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz)”, Health Physics 74 (4), April 1998.

Ø http://image.gsfc.nasa.gov/poetry/workbook/stroms.html.

 

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