XLPE Cables in HDPE conduit

With regards to the material of ducts for cables the following question might arise:
Regarding the cable specification, can we specify HDPE as the material of construction for the ducts that the cable will be pulled through? Given that the temperature of the cable is rated for 90°C, will the HDPE be able to withstand this temperature?

Answer to the above questions could be as follows:
Although 90 degree C is the maximum permissible temperature at the interface of conductor/conductor shield to insulation. There are multiple heat dissipating layers which will considerably reduce the temperature when it comes to outer surface.
Bearing in mind service temperature of HDPE is 80 degree C, there might be no problem when HDPE pipe is hosting XLPE cable. On the other hand, outer jacket of cable is polyethylene (normally LDPE) and works properly while encasing the cable tightly.

Radio frequency for crane wireless remote controls

Radio frequency for crane wireless remote controls

Industrial band covers frequencies of 432-433 MHz. The radio remote controls sold by overhead crane manufacturers usually conform to international rules with regards to frequency and transmission power. Each system operates encoded and mated to its own

Should the customer require certain special frequencies then it must be sent to the manufacturer for evaluation and acceptance. However, since overhead crane manufacturers have been selling standard frequency transmitters for a long time, they are generally aware of the international and local regulations and there should not be any problem with the frequency

Why Engineering?

Some time ago my son was curious to know why I chose to be an electrical engineer while doors for high paid jobs were available to me including a complete scholarship to get PHD in finance or computer science for a high ranking position in a reputable bank.

In response, while explaining my passion for electrical engineering, I tried to organize my thoughts not only to answer his questions but also to explain why I opted to do engineering design while lots of less stressful jobs are available to engineers with far less liability.

The following are the reasons why I ended up in engineering design. They are not characteristic of electrical engineering design only, but also apply to other disciplines as well.

Ø  A commitment to continuous improvement through innovation.

Ø  Passion to work on diverse projects around the globe.

Ø  Diverse, international opportunities to develop your expertise

Ø   Make a tangible impact on the projects stakeholders.

Ø  A wide range of challenging, unique and ground breaking projects.

Ø  Ability to positively influence the way a project progresses.

Ø  Innovate and generate clever outcomes.

Ø  The opportunity to work on a full project life-cycle from conception to delivery.

Ø  Team work, and collective accountability for project deliverables.

Ø  The skills to solve complex engineering problems

Ø  Not settle for "acceptable" performance but to strive for excellence.

Ø  Opportunity to travel to places never seen before and experiencing their cultures and traditions.

Ø  Undertaking difficult projects in tough environments.

Ø  Fascinating team building, mobilization and demobilization with each project.

Ø  Opportunity to expand responsibilities and work with great leaders on complex projects.

Ø Keeping up with the pace of change in the project team.

Masoud Kashani

August 14^th, 2013

SAFETY IN OFFICE

SAFETY IN OFFICE

Manual handling injuries account for approximately 60% of all recordable or lost time injuries in the office.


Compared to working on a project site, an office can seem like a
safe place to work. However many serious accidents and injuries
continue to occur at the offices around the World.
The key contributing factors for manual handling injuries are:
• Failure to assess the load;
• Did not utilise available lifting equipment;
• Did not seek assistance;
• Poor lifting technique.
Consider the following safe work practices before commencing the task:
• Do I really need to handle the object in the first place?
• Is there equipment I can utilise to assist me in the moving or handling of this object?
• Can I manage on my own?
• Is the packaging damaged or in a safe condition to handle?
Plan all lifting tasks. If safe to do so, bend your knees, keep your back straight,
use your legs to power the lift and keep the load close to your body.

FATIGUE MANAGEMENT

FATIGUE MANAGEMENT

Struggling with fatigue? I found the following on our company's health and safety website for you. It is not my expertise to comment on health related issues, therefore please read the content with due caution and refer to other sources for best results as well. However I found the recommendations quite useful. 

So hurry! Let's get rid of fatigue: 

Management of fatigue is a very important part of your personal safety and health. The average adult sleeps less than seven (7) hours each day and more than a third of adults experience significant daytime sleepiness that affects their work and social functioning as a result. Most people need on average eight (8) hours of sleep each day to mitigate the effects of fatigue, some might need more.

Sleep deficit is the most common contributing factor of fatigue and is built up slowly over consecutive nights of shortened or interrupted sleep. As a consequence it is often ignored but can produce a decline in performance such as slower reaction times, failure to respond to changes and the inability to concentrate and make reasonable judgments. Researchers say lack of sleep is connected to cardiovascular disease, hypertension and high blood pressure. It also compromises the immune system, contributes to obesity and severely impairs mental judgment. Dieting might be more difficult too. Recent findings also show that when you are sleep deprived, your body actually boosts production of the hormone that makes you hungry. So how can I improve my sleep?

• Avoid caffeine, alcohol, nicotine and other chemicals that interfere with sleep, 3 to 6 hours before bedtime.

• Turn your bedroom into a sleep-inducing environment by making it a quiet, dark and cool environment.

• Establish a pre-sleep routine like reading or taking a warm bath as the warm temperature promotes drowsiness.

• Go to sleep when you’re truly tired. If you are not asleep after 20 minutes, get out of bed and do something relaxing (watching the television or using the computer are stimulating activities and not relaxing).

• Don’t be a night time clock-watcher as this can increase stress and make it harder to fall asleep.

• Keep your ‘internal clock’ set with a consistent sleep schedule each day.

• Lighten up on evening meals or finish dinner several hours before sleep so as to allow your body to digest the food.

• Exercise can help you fall asleep faster and sleep more soundly as long as it's done at the right time. Try to finish exercising at least 3 hours before bed or work out earlier in the day.