Representation by Peter Crockett
- Date submitted
- 3 February 2020
- Submitted by
- Members of the public/businesses
I live in a house which will be close to the route the cable will be taking. 1. I would like to be kept informed about how far away the cable will be. 2. I would like to know how the possibility of Corona discharge will be managed: Corona discharge is the creation of ions in a fluid (such as air) by the presence of a strong electric field. Electrons are torn from neutral air, and either the positive ions or the electrons are attracted to the conductor, while the charged particles drift. This effect can cause considerable power loss, create audible and radio-frequency interference, generate toxic compounds such as oxides of nitrogen and ozone, and bring forth arcing. Both AC and DC transmission lines can generate coronas, in the former case in the form of oscillating particles, in the latter a constant wind. Due to the space charge formed around the conductors, an HVDC system may have about half the loss per unit length of a high voltage AC system carrying the same amount of power. With monopolar transmission the choice of polarity of the energized conductor leads to a degree of control over the corona discharge. In particular, the polarity of the ions emitted can be controlled, which may have an environmental impact on ozone creation. Negative coronas generate considerably more ozone than positive coronas, and generate it further downwind of the power line, creating the potential for health effects. The use of a positive voltage will reduce the ozone impacts of monopole HVDC power lines. 3. I would like to know if the following WHO GUIDANCE is appropriate to this project and if so will be used: For high-level, short -term exposure to EMF, adverse health effects have been scientifically established. International exposure guidelines designed to protect workers and the public from these effects should be adopted by policy makers. EMF protection programs should include exposure measurements from sources where exposures might be expected to exceed limit values. • Government and industry should monitor science and promote research programmes to further reduce the uncertainty of the scientific evidence on the health effects of ELF field exposure. Through the ELF risk assessment process, gaps in knowledge have been identified and these form the basis of a new research agenda • Establishing effective communication programmes, including improving coordination and consultation among industry, local government, and citizens in the planning process for ELF, EMF-emitting facilities • When constructing new facilities and designing new equipment, including appliances, low-cost ways of reducing exposures may be explored. 4. Which body in the UK is now responsible for ensuring appropriate health and safety measures are applied to a project like this and what those measures are.