Category Archives: Environment Health and Safety


Versatile Protection by ELCB- e.g. 4-pole type, Even when fed with 3 Single-Phase Independent Power Supply Sources

1. A 4-pole ELCB, providing passage to balanced 3 phase & 1 neutral through it’s torroid forming the primary winding of the sensitive current transformer, serves very effectively to guard against leaking current of the order of 5 mA – 30 mA -50 mA and beyond , with prompt clearance of the leaking circuit in a matter of 30-50-100….m.seconds.The consumer side is distributed 3-phase loads plus some single-phase loads. Problem arises when the main 3-phase, 4 wire balanced supply line is switched off by the supply agency and alternative stand-by 3-phase balanced supply is not available.

The gap may be asked to fulfill with 3 Nos separate sources of 1-phase diesel generators, the voltage of which shall be unequal, unbalanced in phase, rather placed at random phase displacement, may be filled with harmonics and even some d.c. components, connected in star with common neutral (earthed) as shown in below vector diagram.



Optimizing Electrical Energy Management Nationally and Inter-Nationally

1. Out of all the forms of energy available to mankind, electrical energy is the most preferred one, because of its neat and clean form, easy tapping for any utilization, smooth regulation, reliable control, correct measurement and profitable automation…etc. This aspect prompts engineers, scientists and even common users to convert several forms of energy into Electrical type and then utilize it in civilian life and various industries, including Agriculture sector.

2. Looking at the adverse side of electricity, besides being highly hazardous to human life, body and property, it has no scope for storage, except in batteries to a very limited extent, forcing the users to utilize it immediately on its generation.



Work at Height – An Important Task, But Needs Due Care

When at height, potential energy is acquired and the object is on a lookout to fall. It is with human being too, but it can be very risky for him –even fatal. Hence, all-out efforts needed to secure his body at height, arrest the fall if he slips and take all measures for his rescue and well-being. Let us study its pros and cons and take positive measures to ensure safety.



Meeting OHS Challenges Through Software

Global corporations across the world are bringing together inherent technologies that are supporting multiple safety initiatives. Although a little late in the day, safety is being looked at closely for bringing in automation and thereby, making it efficient for the safety professional as well as the organization. Software acts as a natural area of support for such organizational safety teams. Here are 3 challenges that professionals face when considering software from ASK EHS perspective.



How the Behavior Of First-Line Supervisors Can Improve Accident Prevention In the Workplace

The first line supervisor is an important link between the safety management teams and on ground work-forces. His role is crucial in implementing a successful safety culture. His behavior plays a crucial role in enhancing workplace safety that could lead to productive project execution. What are the characteristics that will decide his efficiency and performance? This post delves into some of the critical aspects of Supervisor behavior that helps build a safe work environment for the work forces.


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