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as configured at Cromer, then the area requiring technical mitigation may be much smaller than illustrated in Diagram 25.


85.


EATL anticipates that, consistent with NATS’ approach for other offshore wind farms (particularly Round 3 wind farms), the most likely mitigation strategy to be adopted by NATS would be to blank the Cromer PSR in the impacted area. However, as Chapter 16 notes, there may be additional mitigation required in light of the ATS provided by NATS (and the MOD utilising NATS’ radar infrastructure) in the impacted area, including the possibility of the imposition of a Transponder Mandatory Zone (TMZ) or the use of alternative radar feeds.


86. 87.


The following paragraphs examine the alternative radar feeds which may be available to NATS in the vicinity of the East Anglia THREE site.


In the event that turbines exceeding a tip height of 220m were to be envisaged, an investigation was undertaken to identify alternative sources of radar data that could be utilised in the event that the performance of the Cromer radar is compromised by the East Anglia THREE site. The alternative radar sources investigated were NATS Claxby radar and NATS Debden radar.


88.


Claxby radar has LoS cover down to 7,000’ AMSL above the East Anglia THREE site. The East Anglia THREE site lies between 118NM and 126NM from Claxby radar. LoS at 7,000’ is depicted at Diagram 19.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Appendix 0 Example Page 26


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