no.231/7/2018-wind (part-i) a ministryofnewand ......"standardobstruction markings andlightings...

No. 231/7/2018- Wind (Part- I) Gove r nme nt of India/ a u+al Minist r yof Ne w and Re ne wable Ene r gy/ +di 3it +4i awfza 3i +inrza Block No.14, CGO Complex, Lodhi Road, New Delhi - 110 003 Dated: 1" January, 2020 To, Al l conc erned (OEMs/Wi nd Power Proj ect Devel opers ) Subject :- St andard obst ruct ionmarkingsand light ings asper IS 5613 not ificat ion and Int ernat ional C ivil Aviat ion Organizat ion (IC A O) st andar ds on Wind Turbines Si r/ Madam, I am di rected to refer to NoCs i ss uedby Mi ni s try of Defenc e for i ns talli ng Wi nd Tur bi nes i n the vi cini ty of Ai r Force Stati ons wherei none of the mandatory requi rement i s Standard obstructi on marki ngs and l i ghti ngs , as per IS 5613 noti fic ati onand Internati onal Ci v i l Av i ati on Organi z ati on (ICAO) standards , on wi nd tur bi nes . The rel ev ant claus e of NoC i s reproducedas under: "Standard obs truc ti on marki ngs and l i ghti ngs as per IS 5613 noti f i cat i on and Internati onal Ci vil Av i at i on Organi zat i on (/CAO ) standards asst i pul ated i n ICAO- Annex - 14 sh all be prov i ded by the company. The l i ght s shall be kept 'ON' at al/t i mes . Prov i si on shall bemade f or standby power suppl y to keep the l i ghts 'ON' duri ng power f ai l ure. Company shall ens ure standard mark i ngs and servi ceabili t y of obs tacle l i ghts i n all weather condi ti ons ." 2. In thi s regard, dur i ng a meeti ng wi th IAF at Bhuj Ai r Force Stati on i t was i nformed by Indi an Ai r Force authori ti es thatthe obstacle l i ghts of sev eral wi nd turbi nes are ei ther damaged/ not worki ng whi c h creates haz ard for our ai rc rafts . 3. Acc ordi ngl y , i t was requested duri ng the meeti ng to ens ure thatthe standard marki ngs and servi c eabil i ty of obstacle l i ghts on al l wi nd tur bi nes , as per abov e menti oned claus e faili ng whi c h the Mi ni s try will be constrai ned to adv i s e di sc onnec ti on of suc h wi nd turbi nes from the gr i d. Accordi ngl y , all OEMs/ wi nd farm dev el opers/ Wi nd Far m operators are requested to submi t a report regardi ng theoperati onof sai d lights on thei r wi nd tur bi nes to thi s Mi ni stry at the earl i est, l atest by 17.01.2020. Yours fait hf ull y I=L ( Dr. Rahul Rawat ) Scient ist ' B ' C opy t o - C hief Engineer, Gujarat SLDC - Com manding Of ficer, Indian A ir Force St at ion, Bhuj

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No.231/7/2018-Wind (Part-I)Government of India/a u+al

Ministry of New and Renewable Energy/ +di 3it +4iawfza 3i +inrza

Block No.14, CGO Complex,Lodhi Road, New Delhi - 110 003

Dated: 1" January, 2020To,

All concerned (OEMs/Wind Power Project Developers )

Subject:- Standard obstruction markings and lightings as per IS 5613 notificationand International Civil Aviation Organization (ICAO) standards on WindTurbines

Sir/ Madam,I am directed to refer to NoCs issued by Ministry of Defence for installing Wind

Turbines in the vicinity of Air Force Stations wherein one of the mandatory requirement isStandard obstruction markings and lightings, as per IS 5613 notification and InternationalCivil Aviation Organization (ICAO) standards, on wind turbines. The relevant clause ofNoC is reproduced as under:

"Standard obstruction markings and lightings as per IS 5613 notification andInternational Civil Aviation Organization (/CAO) standards as stipulated in ICAO-Annex-14 shall be provided by the company. The lights shallbe kept 'ON' at al/times. Provision shall be made for standbypower supply tokeep the lights 'ON' during power failure. Company shall ensure standard markingsand serviceabilityof obstacle lights in all weather conditions."

2. In this regard, during a meeting with IAF at Bhuj Air Force Station it wasinformed by Indian Air Force authorities that the obstacle lights of several wind turbinesare either damaged/ not working which creates hazard for our aircrafts.

3. Accordingly, it was requested during the meeting to ensure that the standardmarkings and serviceability of obstacle lights on all wind turbines, as per abovementioned clause failing which the Ministry will be constrained to advise disconnection ofsuch wind turbines from the grid. Accordingly, all OEMs/ wind farm developers/ WindFarm operators are requested to submit a report regarding the operation of said lights ontheir wind turbines to this Ministry at the earliest, latest by 17.01.2020.

Yours faithfully

I=L( Dr. Rahul Rawat)

Scientist 'B'Copy to - Chief Engineer, Gujarat SLDC

- Commanding Officer, Indian Air Force Station, Bhuj