Nid safbwyntiau’r Arolygiaeth Gynllunio yw’r rhai a fynegir ar y dudalen hon. Yr hyn a ddangosir yma yw cynnwys a gyflwynwyd i’r Arolygiaeth Gynllunio gan y cyhoedd a phartïon eraill â buddiant, sy’n rhoi eu barn ynglŷn â’r cynnig hwn.
Cysylltiad Gogledd Cymru
Derbyniwyd 29/11/2018
Gan Dr Thomas Conway
Gan Dr Thomas Conway
Sylw
“Submission by Dr Thomas Conway - 19/11/2018:- I was the Senior Commissioning Engineer for Wylfa Nuclear Power Station - 1968-1972. I was also a member of th Commissioning Teams for Bradwell and Dungeness A Nuclear Power Stations. I am competent to address the project issues.
At the start of the North Wales Connection Project at the stage where connection routes were being considered I wrote to the then Project Engineer Mr Martin Kinsey recommending my preferred route as the one running parallel to the existing 400 kV Supergrid line about 65m from it with the grid towers all aligned for maximum symmetry
and minimum environmental impact. No other areas of Anglesey needed to be disturbed.
This parallel route creates the minimum environmental impact and is aesthetically pleasing and acceptable. The route affects the minimum number of dwellings who have site of the grid line and costs the minimum capital investment required while solving the electricity transmission problem.
The standard National Grid tower is a well established design with national application. the galvanised steel structure of the existing Supergrid Line has withstood the marine environment and served the electricity industry well. The mathematical formula for the transmission wire Catenary is an elegant solution to the minimum cost of the transmission line and this creates an elegant tracery on the skyline when a long distance run of towers becomes available to view. I find this very artistic and pleasing to the eye.
The fact that the two transmission lines required to transmit the electrical energy generated by Wylfa Newydd run side by side over a distance of some 33 km on the island is not in itself an justified reason for objecting to the parallel grid lines. There are many areas of the UK where National Grid have found it necessary to run Supergrid lines in parallel over long distances in areas of natural beauty much more significant than Anglesey. e.g. Pembroke to Llanelli, Sizewell B across Suffolk, the UK Midlands, North Wales above Llanfairfechan. All these lines are now accepted.
The estimated cost of the second grid line is £500M. The estimated cost of the cable tunnel under the Menai Straits is £300M. The tunnel is a method of minimising the environmental impact of a second grid line in a sensitive area. Observing the existing overhead grid line across the Menai Straits I conclude that it has minimal visual impact and what is there is pleasing to me because of the visual effect of the catenaries. I recommend that the tunnel project is replaced with a parallel overhead grid line. I find this practical, sensible, cheaper, and visually acceptable.
It is important for everyone to realise that all the costs associated with the essential transmission of electricity from Wylfa Newydd to Pentir will be transferred to all electricity consumers over time. It is essential that this cost is minimised.
The only justification I can see for putting the grid line under ground is that the Wayleave Payments to the Landowners would be much much larger. *This possibly explains the emotional public outcry of objection to the grid proposals. I support the National Grid Project proposals for the overhead grid line.* I wish to speak to this statement at the public enquiry.(540 words) TC/29/11/2018”
At the start of the North Wales Connection Project at the stage where connection routes were being considered I wrote to the then Project Engineer Mr Martin Kinsey recommending my preferred route as the one running parallel to the existing 400 kV Supergrid line about 65m from it with the grid towers all aligned for maximum symmetry
and minimum environmental impact. No other areas of Anglesey needed to be disturbed.
This parallel route creates the minimum environmental impact and is aesthetically pleasing and acceptable. The route affects the minimum number of dwellings who have site of the grid line and costs the minimum capital investment required while solving the electricity transmission problem.
The standard National Grid tower is a well established design with national application. the galvanised steel structure of the existing Supergrid Line has withstood the marine environment and served the electricity industry well. The mathematical formula for the transmission wire Catenary is an elegant solution to the minimum cost of the transmission line and this creates an elegant tracery on the skyline when a long distance run of towers becomes available to view. I find this very artistic and pleasing to the eye.
The fact that the two transmission lines required to transmit the electrical energy generated by Wylfa Newydd run side by side over a distance of some 33 km on the island is not in itself an justified reason for objecting to the parallel grid lines. There are many areas of the UK where National Grid have found it necessary to run Supergrid lines in parallel over long distances in areas of natural beauty much more significant than Anglesey. e.g. Pembroke to Llanelli, Sizewell B across Suffolk, the UK Midlands, North Wales above Llanfairfechan. All these lines are now accepted.
The estimated cost of the second grid line is £500M. The estimated cost of the cable tunnel under the Menai Straits is £300M. The tunnel is a method of minimising the environmental impact of a second grid line in a sensitive area. Observing the existing overhead grid line across the Menai Straits I conclude that it has minimal visual impact and what is there is pleasing to me because of the visual effect of the catenaries. I recommend that the tunnel project is replaced with a parallel overhead grid line. I find this practical, sensible, cheaper, and visually acceptable.
It is important for everyone to realise that all the costs associated with the essential transmission of electricity from Wylfa Newydd to Pentir will be transferred to all electricity consumers over time. It is essential that this cost is minimised.
The only justification I can see for putting the grid line under ground is that the Wayleave Payments to the Landowners would be much much larger. *This possibly explains the emotional public outcry of objection to the grid proposals. I support the National Grid Project proposals for the overhead grid line.* I wish to speak to this statement at the public enquiry.(540 words) TC/29/11/2018”
