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# Minimum Air Clearance Between 11 kV Overhead Transmission Line & Gas Pipe Line

09/07/2010 1:32 AM

11 kV (SOLIDLY EARTHED SYSTEM ) overhead transmission lines are to be installed by the side of Blast Furnace Gas/Coke Oven Gas Pipe Lines in an Integrated Steel Plant in India to cater to the construction power requirement for various modernisation/Expansion projects.The level of the gas pipe lines and the O/H line conductors are almost same ie.6.0 M (approx.)

Can somebody give the value of minimum air clearance to be maintained b/w the two ?Any link or pdf copy of relevant norms will also help.

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#1

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 1:42 AM

1 kilometer is ideal.

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#2

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 1:49 AM

You are from India so you have to follow Indian Electricity rules, 1956.

http://electricity.puducherry.gov.in/acts_Rules/ie_rule_1956/index.htm

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#4

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 5:16 AM

Dear Mr.Justinanto1987,

Thanks a lot for the prompt response and the useful link.However,I could not locate the relevant IE Rule applicable to the specific purpose mentioned in my Question.Can you please help ?

May be there is some other norm/guide line /Standard.Can any other expert through some light?

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#5

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 5:39 AM

It is better to consult state electricity board engineer at your area. It may need some legal procedures.

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#3

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 3:49 AM

To me the very idea of an OH line being installed on a site where construction work is being undertaken is total madness. It should be underground with identification markers on the surface.

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#6

### Re: Minimum Air Clearance between 11 kV Overhead Transmission line & Gas Pipe Line

09/07/2010 8:11 AM

"To me the very idea of an OH line being installed on a site where construction work is being undertaken is total madness. It should be underground with identification markers on the surface."

Dear Mr.TonyS,

It is surprising to get such a reply from a learned expert like you ! Please be informed that,the gas pipe line referred in the query is existing by the side of a wide road in the operating plant and the proposed 11 kV OH Lines are to run by the side of the gas pipe line for a short stretch for which certain minimum clearance is to be maintained.If you can suggest some value based on some authentic reference document or your experience it will be appreciated.

With regards to your apprehension about installation of OH lines in construction site,please note that,these lines are envisaged to be installed by the side of proposed roads which will eventually become the permanent roads after project completion.Hence, there is no possibility of any hindrance to the construction activity nor any damage to the OH lines during construction work .On the other hand, cables laid underground in the construction site are likely to be damaged since, it is extremely impracticable to retain the cable markers in their original position in a construction site.

Hope ,it is clear.

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#7

### Re: Minimum Air Clearance Between 11 kV Overhead Transmission Line & Gas Pipe Line

09/11/2010 9:40 PM

Please refer to IE Rule No. 82A.

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#8

### Re: Minimum Air Clearance Between 11 kV Overhead Transmission Line & Gas Pipe Line

09/14/2010 7:21 AM

I have thoroughly checked IE Rule-82A.But, it does not does not cover the specific requirement raised in my question.It talks about "Transporting and storing of material near overhead lines".

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#9

### Re: Minimum Air Clearance Between 11 kV Overhead Transmission Line & Gas Pipe Line

09/14/2010 7:37 AM

There may not be a specified rule regarding your requirement. Since it is a permanent construction; rules for buildings may can be extended for this application. Check with state electricity board to know whether it is possible.

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