Lamp post under mains pylon question

[static zap]

........ Our health and safety permitted the work with the use of a non conductive tower scaffold at a particular platform height.

Sounds like they " Don't Want " anything high up
with men on it earthed ?

 

[Marvo]

Do the lamp post heads have a CPC from the supply connected?

 

[Jim90]

Sounds like they " Don't Want " anything high up
with men on it earthed ?

I wouldn’t want to be any taller!

Do the lamp post heads have a CPC from the supply connected?

Yea they are connected conventionally - 3 core flex up the post from a fused cut out into the post head. The earth is connected and it is also bonded to the post.

Health and safety are on site tomorrow to come up with a ‘solution’ so wanted to go in with a few extra ideas!

 

[Marvo]

Did you do a Zs test at the top of the post?

 

[Jim90]

Didn’t as we pretty much packed up after being shocked. Death stick was also lit on the casing of the lamp post.

 

[PEG]

This is not an unusual occurrence,there are situations all round the country,where buildings and structures are in close proximity to HV.

There are several properties local to me,where the lines run right over the roofs,and you would never get an accurate compass reading,in a bedroom

The compensation arrangements,which several of my friends have benefited from,are made with these factors in mind.

If the lamp posts meet the required clearances,and the HV distribution provider has no issues,anything else is just an accepted anomaly,which those with experience,would expect to encounter.

 

[marconi]

1. I turned up this reference:
2. Play it safe when working near overhead power lines - https://blog.horizonplatforms.co.uk/play-it-safe-when-working-near-overhead-power-lines/

The higher the voltage, the more humid the conditions, then the further electricity can jump. That’s why you always need to have a minimum approach distance (MAD) – and clearly define it with markers in the ground. Make sure to also check whether your worksite has any requirements of its own.

Our IPAF training programmes recommend that your MAD is:

15m (50ft) + fully extended boom from an electrical pylon

9m (30ft) + fully extended boom from cables on wooden
poles.

2. I think you have been put in harms way and should have received appropriate training before you started work or suitably skilled folk employed to do the work. It is not enough to be given an insulated access platform and some PPE. If it was me I'd be pretty upset with my employer. Are you using an overhead high voltage line proximity detector such as:

HiVolt Alert™ Proximity Warning System - http://www.atlaspolar.com/material-handling-equipment/hivolt-alert.html

3. HSE Electricity at work Safe working practices:

http://www.hse.gov.uk/pUbns/priced/hsg85.pdf

 

[PEG]

If i had to be reincarnated as a bird,i'd rather be an eagle than a seagull...

 

[Percyprod]

If it is an 11 or 33 kv line I wouldn't have thought they would be on pylons, they usually carry 132 and above. What is the distance from the lamppost top to the cable? I doubt the 11kv line would induce that much voltage.

 

[telectrix]

If i had to be reincarnated as a bird,i'd rather be an eagle than a seagull...

eagles need to be more accurate.they ---- from a greater height.

 

[Pete999]

If it is an 11 or 33 kv line I wouldn't have thought they would be on pylons, they usually carry 132 and above. What is the distance from the lamppost top to the cable? I doubt the 11kv line would induce that much voltage.

Wouldn't like to try it out for size though Percyprod.

 

[Dave OCD]

One solution would be replacing the columns for 'mid-hinged' aka 'folding' type. I'd have thought the original Risk Assessment would have made these an obvious choice. Then all future maintenance/repairs could be done at ground level.

 

[Toneyz]

This is the M1 northbound just after the Hemal Hempstead junction you have the standard 12mtr (I think) then when the pylon goes overhead you have these 5 mtr posts You never said what H& S said last Tuesday and what is the distance between the lamp post head and the pylon?

 

[Strima]

This is the M1 northbound just after the Hemal Hempstead junction you have the standard 12mtr (I think) then when the pylon goes overhead you have these 5 mtr postsView attachment 42839 You never said what H& S said last Tuesday and what is the distance between the lamp post head and the pylon?

I've never seen that stretch of road that clear...

 

[UKMeterman]

I would strongly suggest the following:
1. Get a site visit from a Authorised Person at the DNO.
2. Once the hight limits have been confirmed then think about folding light columns that meet the hight limits.
3. If the customer doesn like the cost of the DNO visit then show them Horrific moment concert-goer is electrocuted after climbing stage at Brazil music festival and grabbing power cable - https://www.thesun.co.uk/video/news/horrific-moment-concert-goer-is-electrocuted-after-climbing-stage-at-brazil-music-festival-and-grabbing-power-cable/