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Content

What is it…….?
• Building Services Engineering/ Building Services Architect/ Building engineering is the “Engineering Of The Internal Environment And Environmental Impact Of A Building. It Essentially Brings Buildings And Structures To Life.”

So…What We Do…?
• Building services engineers are responsible for

Design Installation Operation Monitoring

Of What…?
Of the Mechanical (M) Electrical (E) Plumbing & Public Health Systems (P) MEP required for the
Safe comfortable and environmentally friendly operation

of modern buildings.

Subdivisions
Mechanical, Electrical and plumbing or public health (MEP) engineering, all of which are further sub-divided into the following: • Communication lines, telephones and IT networks (ICT) • Energy supply – Gas, Electricity and renewable sources • Escalators and lifts • Fire detection and protection • Heating, Ventilation and Air Conditioning (HVAC) • Lighting protection • Low Voltage (LV) systems, Distribution Boards & Switch Gear • Natural Lighting and Artificial Lighting, and building facade • Security and Alarm systems • Ventilation and Refrigeration • Water, Drainage and Plumbing

Do We Arrive at a Definition..?

Duties / Responsibilities
• Design: designing layouts and requirements for building services for residential or commercial developments. • Construction: supervising the construction of the building services, commissioning systems and ongoing maintenance and operation of services. • Environmental: developing new energy saving methods for construction, designing new and improved energy conservation systems for buildings. • Heating, ventilation and air conditioning (HVAC): specialising in the design, development, construction and operation of HVAC systems. • Electrical technology: specialising in the design and development of electrical systems required for safe and energy sustaining operation of buildings.

Electrical Safety
Why Electrical Safety…?
• As an engineer, contractor, manufacturer, or maintenance personnel, and whether one's business is ELECTRICAL IN NATURE OR NOT, Electrical Safety Is A Concern

Shared By All In The Building Industry.
By Michael A. Cherock, PE, RCDD Principal, Power Design Architects and Engineers Ltd.

Some Statistics: 1. Approximately 300 deaths occur each year by accidental electrocutions. 2. Over 800 people die annually due to fires caused by electrical faults. 3. Each year, electrical mishaps account for thousands of people sustaining shock injury or burns, and electrical failures cause over 1.3 billion dollars in property damage. ( =~ Rs 68, 90, 00, 00, 000 /-)

Steps In Employing Electrical Safety (Broadly)
• Understand the importance. • Recognize the forms Electrical Safety. • providing resources for implementing electrical safety in one's work are all required to institute an electrical safety program.

Implementation Steps:
• Electrical safety is broken down into three distinct areas: 1. Perspectives and Responsibilities, 2. Modes of Electrical Safety, and 3. Electrical Safety Resources.

1. Perspectives and Responsibilities
• The proper mind frame is the first step to establishing responsibility to enforce standards of electrical safety. So, perspective determines the impact electrical safety has on one's work. The four perspectives are defined by recognized and accepted roles within the building industry 1. Engineer 2. Contractor 3. Maintenance 4. Manufacturer

Perspective Interrelationship

Engineer's Perspective
• The engineer's perspective identifies measures necessary to achieve electrical safety in the engineering design process. Equipment ratings Conductor ampacities Selective coordination of over current protective devices Adherence to applicable codes Supply/demand equality General power distribution methods

Contractor's Perspective
• The contractor's perspective identifies measures necessary for electrical safety in the installation process Equipment ratings Proper mounting of equipment Adequate tightening or torque of connections Use of correct tools Minimizing of insulation abrasion Onsite coordination with other contractors Adherence to applicable codes

Maintenance Perspective
• The maintenance perspective identifies measures necessary for electrical safety in the operation of a system. Proper mounting of equipment & devices
Equipment ratings Conductor ampacities Selective coordination of overcurrent protective devices Adherence to applicable codes Supply/demand equality General power distribution methods Proper mounting of equipment Adequate tightening or torque of connections Use of correct tools Preventative maintenance Monitoring of equipment parameters

Manufacturer's Perspective
• The manufacturer's perspective identifies measures necessary for electrical safety in the creation and construction of equipment and devices. Proper mounting of equipment

Adequate tightening or torque of connections Use of correct tools Minimizing of insulation abrasion Onsite coordination with other contractors Adherence to applicable codes

2. Modes of Electrical Safety
• Once perspectives and responsibilities are determined, electrical safety is further defined by mode. There are three major modes:

1. Preventive 2. Real-Time 3. Reactive

• The three modes combined form an all inclusive approach to maintaining electrical safety as an integral part of any process or program involving electricity

Preventive Mode
• The preventative mode is identified by administrative actions utilized to ward off or prevent electrical mishaps prior to work being performed. A list of actions for the preventative mode should include: Implementation of preventative maintenance programs Requiring tagout/lockout procedures Instituting second-checks requirements for de-energizing during troubleshooting Resourcing applicable codes during design

Real-Time Mode
• The real-time mode is the implementation of actions identified in preventative mode. A list of actions for the real time mode should include:
Preventative maintenance being performed Tagout/lockout procedures being completed during system repair Second-checks while de-energizing equipment Applying code requirements during design Correct installation procedure Proper tie-offs on equipment supports Torque checks

Reactive Mode
• The reactive mode is identified by procedural and administrative actions utilized to address electrical mishaps that are occurring or have occurred. A list of actions for reactive mode should include:
Fire suppression training Electrical shock training (see Fig. 3: Effects of Electric Shock Levels) PR training Electrical shock victim identification Emergency planning Electrical system orientation

3. Electrical Safety Resources
• With so many resources available, an electrical safety program should implement a method of sourcing the information into a manner that is easily accessible. • An "Electrical Safety Library" is a start to organizing and making the vast information easier to access. Equally important is the ability to access different media types. • Today, not only is access to the Internet a necessity but multiple entry points are suggested. • A dedicated area on the computer network for electrical information is an excellent way to manage and identify resources on hand and those becoming available • Within the database, electrical safety resources should be categorized by Perspectives and Modes.

Exercise

Mechanical & Electrical Building Services Engineering For
1. Primary School Buildings

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