The article on Behr Iron & Steel emphasizes the importance of lock-out/tag-out (LOTO) in safeguarding the life of workers. LOTO is achieved when a device is placed on a switches, valves, circuit breakers, etc. so that reactivation of the equipment is forestalled. In addition, a warning sign must be put in place to show that maintenance activities are going on. Equipment is locked out whenever the flow of dangerous energy is cut-off and the operation of the equipment is constrained until the lockout device is taken away. While equipment is tagged out implies that a warning tag is placed on it to inform others that the equipment is undergoing servicing and must not be operated. It is imperative that safety measures is utilized together to give an optimum level of protection for those performing the service (Iowa State University, 2004).
In the past, virtual reality technology was thought of by many as a gimmick, and the hope for it to become a mainstream technology was discarded as products did not work as how the public envisioned. However, the proper technology is now available to make virtual reality just that: a reality. The entertainment industry is on the verge of a monumental paradigm shift that will completely transform the way these entertainment mediums are experienced.
Wall plate – it is the plastic or metal plate that screws into the wall. It has some sort of connector, usually coax, rj11, rj45, duplex receptacle, or fiber optic. This is where the device plugs into the wall.
Communities play an essential role in the development of the self and learning about the stranger. Through communities, individuals are able to socialize and create a greater understanding of each other. In The Glass Castle, Jeannette Walls describes the community of which she felt most part of during her childhood. Walls says, “. . .
| 1. Install, replace and repair lighting fixtures and electrical control and distribution equipment 2. Connect electrical power to sound and visual communication equipment 3. Test completation of circuits in electrical wiring, equipment and fixtures, using testing devices and ensure compatibility and safety of system
when disconnected from power. It is commonly used in consumer devices such as digital cameras,
measurements of three-phase voltage and current samples obtained from the PSCAD/EMTDC. Fig. 8 depicts the 220 kV, 50 Hz simulated system one-line diagram. The other related parameters of the simulated system are shown in Table 1, transmission lines are assumed completely transposed. Fig. 9 & 10 show 3ph voltages and currents waveforms for 3ph to ground fault at 50% of the second line without and with UPFC respectively. It is clear that when UPFC is involved in the fault loop, the the voltage and current signals would be deviated from the actual value.
FS20 switchable Socket plugs are used to allow connected appliances to be switch on or off using commands sent wirelessly using the FS20 radio frequency. Individual switchable sockets are addressed using a combination of house codes and device address. House code allow different smart homes in the same area to use the same FS20 radio frequency with limited interference while device address refers to a particular switchable plug.
Our society today is ever more dependent upon electricity in all aspects of life. Keeping the power infrastructure throughout the United States secure and functioning properly should be considered a high priority for both private sector and government. Lacking properly functioning power caused by an outage has widespread impact not just on common conveniences being unavailable but also on critical areas such as emergency services, transportation, water distribution, communication and food production and storage.
The 2003 northeast blackout that saw about 50 million people from the northeast US and southeast Canada lose power for about 2 days at the cost of $6 billion dollars according to JR Minkel (Minkle) and was the biggest blackout in North American history (Minkle). The disaster lead to a report that showed the blackout was caused by a combination of human error and equipment failure. To prevent issues like this in the future a “smart grid” needs to be developed that would monitor and repair itself in the event of problems. Essentially computers and applications would be the first responder when there is an equipment failure on the grid. The problem with this solution is that by placing more of the control of the power grid into the hands of computers and applications, it opens up the grid to cyber-attacks. The economic impact of a total or even partial failure of the power grid is astronomical and makes a very appealing target to those who wish to cause
used piece of electronic apparatus in the world. It is probably one of the most