control
1) Present Technology
위에서 살펴본 것처럼, 터빈의 효율을 감소시키는 요인 중에서 가장 기여도가 큰 것이 바로 누설 손실이다. 그 중에서도 bucket tip을 통한 누설과 packing부에서의 누설이 가장 많은 부분을 차지한다.
그림3-3. A typical combination-type-staggered-labyrinth seal geometry[3]
예전부터 이러한
16 2010. 5. 6 ① BP confirms the arrival of three huge containment domes designed to collect much of the 5,000bpd leaking into the US Gulf from the Macondo blowout.
② The department of justice asks Transocean to preserve evidence in connection with the explosion and sinking of the rig
③ Hayward tells the BBC that the blowout preventer owned by Transocean was at fault for the leak. BP, he s
Recent Situation
“ internal information security attacks are outgrowing external
attacks at the world’s largest financial institutions”
(The Global Security Survey): Only 20% of the respondents in security survey strongly
believed that Information security should be a CEO-level priority
Ernst and Young(2004)
2) IT liability risk management
: The corporations should install f
ADVANTAGE
Cost reduction
- price competitiveness
Local production
-Improve Local Responsiveness
Decrease
foreign-exchange loss
Why?
- Excessive
cost reduction
- Side effects of
expanding overseas
production bases
Case study : Nokia
In 2007, recalled 46,000,000 cell phone battery that supply from Matsushita
In 2009, recalled 14,000,000 cell phone charger that
The Gulf of Mexico [2/3]
Coastal fisheries that produce 2.4 billion dollars
Center of tourist and ocean industry
Oyster and shrimp culturists
Marine products
- 1/3 America demand
Seriousness of Oil Spill [1/3]
The Exxon Valdez Oil Spill Case
-the most expensive cost was spent
-3,700 ton oil spill
-Even 21 years couldn’t remove the oil !
2010 Gulf of Mexico Oil Spill