Plant air systems

Question 1

What is the purpose of Plant Air Systems?

Answer 1

designed to provide sufficient compressed air of suitable quality and pressure for instruments, controls, breathing air and pneumatic tools

Question 2

Describe the purpose of the Service air system (SAS)

Answer 2

Provides high pressure air throughout the plant; pneumatic tool connections and pressure reducing station for fuel pool gate seals, and backup for IAS through IAS filters and dryers

Question 3

Describe the purpose of the Instrument air system (IAS)

Answer 3

Provides filtered, dry, high pressure air for: pneumatic instruments and controls; pneumatically operated valves; and breathing air

Question 4

Describe the purpose of the Containment instrument air system (IAC)

Answer 4

Supplied by IAS; supplies various air loads within containment

Question 5

Describe the function and location of the Service air compressor (SAS-C1)

Question 6

What does CSD stand for?

Answer 6

Cold Shutdown

Question 7

Are the IAS, SAS, or IAC required for safe shut down of the plant?

Answer 7

No

Question 8

Describe the function and location of the Air receivers

Question 9

Where are all the major components of this system located?

Answer 9

14’ elevation of the turbine building

Question 10

Describe the function and location of the Service air header isolation valve (SAS-AOV33)

Question 11

Describe the function and location of the Unit 3 to unit 2 air cross connect spool pieces (IAS & SAS)

Question 12

Describe the function and location of the Instrument air compressors (IAS-C1A/C1B)

Question 13

Describe the function and location of the Service air to instrument air cross-connect valve (IAS-AOV14)

Question 14

Describe the function and location of the Instrument air system air dryers (normal and emergency)

Question 15

Describe the function and location of the Instrument air containment isolation valves (IAS*PV15 AND *MOV72)

Question 16

Describe the function and location of the Instrument air compressor cooling supply and return valves (CCS-AOV192A/B, AOV193A/B, AOV191A/B, AOV194A/B)

Question 17

Describe the function and location of the Shutdown instrument air compressors (IAS-C2A/C2B)

Question 18

Describe the function and location of the Shutdown instrument air compressor header isolation valve (IAS-AOV95)

Question 19

Describe the system response to loss of electrical power