STG

Question 1

Does generator spec require ASME stamp for anything?

Answer 1

Yes. H2 coolers

Question 2

Where did I get the detailed vibration criteria?

Answer 2

USEPR spec.

Question 3

Why did I accept some deviations to the spec requirements for core vibration and end-winding vibration?

Answer 3

A. Because they meet the overall criteria
B. The specified values are not governed by standards
C. We don’t normally have any stated limit

Question 4

Arabelle proposed gen voltage

Answer 4

24 kV

Question 5

Arabelle proposed exciter type

Answer 5

Brushless

Question 6

Arabelle excitation system ceiling voltage

Answer 6

150%

Question 7

Arabelle piping design and fabrication code

Answer 7

ASME B31.1 or EN equivalent
for European regulations

Question 8

WEC DID requirement for STG load rejection.

Answer 8

Load rejection from 100 percent power with the turbine generator
continuing stable operation while supplying the plant auxiliary loads

Question 9

Is the Gigatop core spring-mounted.

Answer 9

No. Keybars only.

Question 10

Is the Doosan core spring-mounted?

Answer 10

Yes, Spring-bars. Looks like a TFLQQ machine.

Question 11

Doosan exciter type

Answer 11

Static

Question 12

Did I specify any transient stability studies or similar?

Answer 12

No. Just the PSS setting.

Question 13

Ara include field flashing?

Answer 13

Yes

Question 14

What pf did we specify?

Answer 14

0.85