Buhar ve gaz turbinleri 3000 rpm'de donerken bearing housing 60-80 bar mineral yag ile yaglanir. Yag sizintisi 600 C turbin yuzeyine temas ettiginde aninda tutusur. NFPA 851 hidroelektrik, termik ve nukleer santraller icin yangin koruma kurallarini belirler.
Turbin Yag Ozellikleri
- Mineral yag (ISO VG 32/46): Flash 210 C, fire 240 C
- Fosforik ester (Fyrquel): Fire-resistant, 260 C fire
- Sistem basinc: 60-80 bar lube, 210 bar control
- Tank hacmi: 20-40 m3 buyuk turbin
- Sicaklik: Return 50-60 C, supply 40 C
NFPA 851 Sprinkler
- Deluge system: 10.2 L/min/m2 turbin altinda
- Alan: Bearing pedestal + yag drenaj bolgesi
- K-faktor: K=115 (8.0) standard
- Activation: UV/IR flame veya heat
- Duration: 30 dk minimum
- Drenaj: 4 inch tahliye + flame arrestor
Fire-Resistant Fluid
- FM DS 7-98: FR fluid tercih
- HFDU: Sentetik ester biodegrad
- HFC: Su-glikol %35-60
- Retrofit: Mevcut sistemde seal degisimi
- Maliyet: 3-5x mineral yag
Detection ve Interlock
- UV/IR flame: 5 m cap bearing pedestal
- Heat detector: 88 C spot
- Turbin trip: Yangin -> emergency shutdown
- Lube oil pump: Emergency DC 45 dk coast-down
- H2 cooling: Generator CO2 purge
Turk Santral Ornekleri
- Ataturk HES: 8x300 MW Francis turbin
- Afsin Elbistan: 4x360 MW linyit
- Hamitabat: Gaz turbin kombine
- Akkuyu NGS: 4x1200 MW VVER - NFPA 805
- Bakim: Turbin yag analiz 3 ayda 1
Santral SprinkCalc ile
SprinkCalc turbin deluge sistem 10.2 L/min/m2 debi, K-faktor secimi, 30 dk tank hacmi ve NFPA 851 layout kontrolu yapar.
SprinkCalc'i App Store'dan indir
Kaynaklar & İleri Okuma
NFPA 851, NFPA 850, FM DS 7-98, IEEE 979, API 614. NFPA 851 Hydroelectric Generating Plants.