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Electrical Engineering Design 2014

01/09/2014 2:32 PM

Looking back at 2013, I am sure a lot of industrial facility owners must be intending to be more cautious about electrical hazards and accidents.

What do you suggest are the most critical and important actions to be taken to prevent all sorts of electrical hazards. How to make the power distribution systems safer, less energy consuming and more productive.

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#1

Re: Electrical Engineering Design 2014

01/09/2014 2:52 PM

Following a recognised Standard, such as BS7671, really helps, as does the implementation of Permit To Work systems and the following of the Electricity at Work Regulations.

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#2
In reply to #1

Re: Electrical Engineering Design 2014

01/09/2014 3:02 PM

I would really appreciate, if you could be more specific about "BS7671".

What do you say PWSlack?

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Guru

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#3
In reply to #2

Re: Electrical Engineering Design 2014

01/09/2014 3:31 PM

he just makes up letter and number combinations to sound important

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#4

Re: Electrical Engineering Design 2014

01/09/2014 3:51 PM

As I so often do, I agree with PWSlack that following the power distribution standard codes for the region is the most important thing to preventing electrical accidents. Here in the US the nominal standard is NFPA 70. Many municipalities in the US just follow this code verbatim as their inspection code. There are some locations (like New York City) that add more stringent code rules than NFPA 70 due to local conditions. So find out what is relevant for your jurisdiction.

There is, I believe, a new NFPA 70 code coming out this year, too. As usual existing installations that meet the code for their time will be "grandfathered" but certainly a few contractors will be surprised somewhere to find that their earlier plans must now be changed because they did not finish their part of a project last year.

As for the idea of consuming less energy, the power distribution grid itself is already very efficient. Ironically the use of high efficiency switching supplies by the consumer will make the grid less efficient with the high harmonic load these devices draw. The net result will still be more efficiency.

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#5
In reply to #4

Re: Electrical Engineering Design 2014

01/09/2014 3:55 PM

This truly is Helpful Redfred,

Thanks xxxx

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#6

Re: Electrical Engineering Design 2014

01/09/2014 4:00 PM

Measure the energy consumption, balance your loads, correct the power factor and remove from all offices the myriad of "vampires" (digital stuff of little or no use); appliances like mug warmers, electric heaters and personal coffee brewers.

Follow all codes that apply, regarding periodic safety checks and preventive maintenance.

Turn off the lights when you're not in there, and most important: P.M. me a picture of yourself I think I like you .

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#7
In reply to #6

Re: Electrical Engineering Design 2014

01/09/2014 4:05 PM

flattered!

Thanks, I will upload one soon.

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#12
In reply to #7

Re: Electrical Engineering Design 2014

01/09/2014 5:09 PM

Not necessary! We have one!

Google is our friend! Remember!

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#11
In reply to #6

Re: Electrical Engineering Design 2014

01/09/2014 5:07 PM

She did, cant you see it?

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#14
In reply to #11

Re: Electrical Engineering Design 2014

01/09/2014 5:19 PM

One is none... and even if it is the same as her avatar, I'd greatly appreciate the intimacy of a P.M.

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#18
In reply to #14

Re: Electrical Engineering Design 2014

01/09/2014 5:31 PM

As I said! You are a charmer!

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#16
In reply to #11

Re: Electrical Engineering Design 2014

01/09/2014 5:29 PM

Try this one (assuming it's the same Juliet Cavallaro, of NYC):

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#19
In reply to #16

Re: Electrical Engineering Design 2014

01/09/2014 5:33 PM

Not the same! She is a Pharmacist!

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#21
In reply to #19

Re: Electrical Engineering Design 2014

01/09/2014 5:46 PM

This one, then:

CEO

Greater New York City Area | Electrical/Electronic Manufacturing


(CBA to sign in to LinkedIn tonight).

Or this, perchance? (if not the same):

Juliet Cavallaro is a writer, researcher with a degree in science from New York State University.

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#8

Re: Electrical Engineering Design 2014

01/09/2014 4:52 PM

I would think that someone in the business of engineering consulting would be able to add their own valuable insight to the discussion.

Haven't we met here, before?

Keeping in mind that this is a global forum and many diverse interests are at play. Not all put safety first. Some choose profit instead of safety.

Does your company see examples of this in your line of work?

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#9
In reply to #8

Re: Electrical Engineering Design 2014

01/09/2014 5:02 PM

Safety? You mean like on a gun?

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#13
In reply to #8

Re: Electrical Engineering Design 2014

01/09/2014 5:10 PM

I remember you Lyn!

I wish I could, you know, add my so called "VALUABLE" insights to this topic.

Completely agree! we often see, safety at stake for $, but you should know, are you working at a place where facility owners are putting profit first? is your work place safe in terms of electrical hazards? Unfortunately, our country is among those few place with the most number of electrical hazards such as Arc Flash.

So this is why, experts like you can add more value to the discussion as compare to me

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#15
In reply to #13

Re: Electrical Engineering Design 2014

01/09/2014 5:29 PM

I'm not an electrical expert. Never touch the stuff! Nor does my staff.

The only thing my people do is change light bulbs, that can be reached, safely from a 6 foot ladder.

I am not profit driven. I always err on the side of code compliance and personal safety.

PS: Send the kid a picture. Make his day.

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#22
In reply to #13

Re: Electrical Engineering Design 2014

01/09/2014 6:08 PM

Unfortunately for every good guy like Lyn we are equally hampered by fools such as you.

Yes we've crossed swords before, my opinion hasn't changed.

PWS mentioned BS7671, I doesn't cover distribution systems.

To give it it's full title BS7671 17th edition Revision2 2011, Requirements for Electrical Installations (IET wiring regulations). It isn't legislative but in a court of law it will be the book that is thrown at a UK electrician. It's a weighty tome.

For commercial and industrial we have the Electricity at Work Act 1989 which is legislative.

Distribution is covered by the Supply Authority Regulations.

Some industries have additional regulation such as M&Q (mines and quarries) and foundries. I've worked to both, they have president over BS7671 due to there specialist nature.

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#32
In reply to #22

Re: Electrical Engineering Design 2014

01/10/2014 5:29 PM

"due to THEIR specialist nature"

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#10

Re: Electrical Engineering Design 2014

01/09/2014 5:04 PM

Thats an easy one!

Make sure all the engineers that hit the market in 2014 are trained and up to specs, at least knowing that there is a standard to follow. This combined with laying off the old engineers in 2018 will help transferring the knowledge to the new generation avoiding unnecessary blackouts and losses.

Here ya go - who is up in 2018?

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#17

Re: Electrical Engineering Design 2014

01/09/2014 5:30 PM

What current solutions are you working on now...?

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#20
In reply to #17

Re: Electrical Engineering Design 2014

01/09/2014 5:36 PM

Maybe some more voltage calculations! Capacitance was last!

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#23

Re: Electrical Engineering Design 2014

01/09/2014 11:19 PM

My thought are as under

1) Use the services of qualified and experienced Electrical Engineer for designing the Electrical Distribution System who can follow all the relevant rules and standards.

2) Use the quality , approved and tested products for the installation.

3) Use the qualified and experienced technicians who can follow the installation standards and methods for installing the devices.

4) Test the installation before commissioning as per standards.

5) Carry out regular preventive maintenance on the devices as recommended by the manufacturer.

6) Carry out periodic testing of devices as per standards

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#25
In reply to #23

Re: Electrical Engineering Design 2014

01/10/2014 5:50 AM

Hi Ramesh,

I agree with your sentiments, but would add that people should be cautious of the word "qualified". Really you want to find "competent" i.e. a combination of training, skill, experience and common sense. I have come across many who are qualified, a few who are qualified and experienced, but competent is rarer.

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#31
In reply to #25

Re: Electrical Engineering Design 2014

01/10/2014 4:10 PM

Dear sir

Thanks for your suggestion.

Ramesh

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#27
In reply to #23

Re: Electrical Engineering Design 2014

01/10/2014 9:33 AM

I think this one is the best response so far.

Thanks Ramvinod

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#24

Re: Electrical Engineering Design 2014

01/09/2014 11:28 PM

You should consider changing your occupational field to a professional fishing person, you sure are catching a lot of suckers, doing your home work for you. But, you do have a knack for creative writing too.

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#26

Re: Electrical Engineering Design 2014

01/10/2014 6:01 AM

Here is link on the subject:-

http://www.lanl.gov/safety/electrical/docs/elec_hazard_awareness_study_guide.pdf

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#28

Re: Electrical Engineering Design 2014

01/10/2014 9:47 AM

While out of character for me, I'm going to defend our member, Juliet.

This thread is not asking us for anything but opinions. Most of us have plenty of them and aren't shy about sharing them.

I see this as simply a discussion among peers.

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#29
In reply to #28

Re: Electrical Engineering Design 2014

01/10/2014 12:09 PM

I like the new version of an old saying I just heard in a speech:

"Opinions are like As***les, everyone has one, but few of them need self examination."

Here in the US, the basic NFPA 70 (aka The NEC) is really mostly about the INSTALLATION of electrical equipment, and chiefly related to not starting fires. A more relevant document to the safety of electrical and other WORKERS around electrical equipment is the NFPA 70-E supplement. That outlines the process of establishing and maintaining a systematic program of electrical hazard safety, and safe procedures. However while the NEC is strictly enforced by inspectors in every jurisdiction through the construction permitting process, 70-E has no direct inspection or compliance enforcement aspect as of yet. It might be forthcoming, but there is a LOT of resistance to that because of economic issues. That does not take away from its importance however, and here is where people are making a blunder in that regard.

The Federal Government, through the auspices of OSHA (Occupational Health and Safety Admin.) does not go into very many specific safety requirements for electrical equipment, but they absolutely require that employers, ALL employers, have a PLAN in place for the safety of workers regarding the hazards of electrical equipment. They don't say what the plan MUST be, but they highly SUGGEST the NFPA 70-E as the best possible plan. OSHA has very little pre-planning enforcement power, but they do have another way of coaxing compliance; the threat of fines and or shut down. So IF there is an electrical accident, the first thing the OSHA investigators will do is ask to see your plan for electrical safety. If the plan you hand them follows 70-E to the letter (which includes documentation of implementation and ongoing training), then the investigation follows the track of looking for unforeseen issues. But if, when they arrive and ask, you have NO PLAN, you are immediately out of business for all intents and purposes. In addition, INDIVIDUALS responsible for having and implementing a plan, can face CRIMINAL charges for violating that requirement.

So does that mean that everyone is in compliance now? Absolutely not! Many many companies remain non-compliant, relying instead on the "hope nothing bad happens" strategy. So what can companies do to improve safety? #1 is... Make sure your facilities all comply with existing rules, and use NFPA 70-E as your guideline.

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#30
In reply to #29

Re: Electrical Engineering Design 2014

01/10/2014 12:43 PM

Do you allow me to use this content somewhere else?

I mean your answer?

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#33
In reply to #30

Re: Electrical Engineering Design 2014

01/12/2014 6:52 PM

No....You may link to this site, and any answer...

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Anonymous Poster (4); dj95401 (1); Fredski (1); IdeaSmith (5); JC123 (6); JohnDG (2); JRaef (1); lyn (3); PWSlack (1); ramvinod (2); redfred (1); rogerggbr (1); SolarEagle (1); suresh sharma (1); TonyS (1); Yahlasit (2)

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