List 1

Question 1

State the system code for the primary circuit

Answer 1

M

Question 2

List the 3 containment boundaries

Answer 2

1. Primary
2. Intermediate
3. Secondary

Question 3

What is the function of the steam generators?

Answer 3

1. To produce high quality steam to power the MT’s, TG’s and the auxiliary steam system.
2. Remove Decay heat (DH) from the reactor core.

Question 4

What is the function of the auxiliary steam system?

Answer 4

1. The auxiliary steam system supplies steam at 14 bar to:
   a. Main air ejectors
   b. Gland steam system
   c. Braby

Question 5

State 2 components of the steam drain system

Answer 5

1. Yarway steam trap
2. Key trap
3. Back pressure regulating valve

Question 6

Why is there a separating wall between the ahead/astern sections of the MT?

Answer 6

To prevent steam leakage between them.

Question 7

What is the primary system code for the primary relief system?

Answer 7

R

Question 8

What are the functions of the main circulating water system?

Answer 8

1. Provide cooling water to the main condenser so that optimum condenser vacuum and steam conditions can be maintained.
2. Supply the after stern tube bearing with water for cooling and lubrication
3. Provide a supply of water to the clean sea water system.

Question 9

Describe the construction of the clean sea water system pump.

Answer 9

A glandless, canned centrifugal pp. It is mounted on it’s own side main condenser hotwell.

Question 10

list 4 items cooled by the ships FWD fresh water cooling system.

Answer 10

1. CW plants
2. 70KW MG sets
3. 35KW MG sets
4. 10KW MG sets
5. H2 Burners
6. R12 removal units

Question 11

What does SLIV stand for and what does it do?

Answer 11

Surge line isolation vv it provides a means of isolating the pressuriser in the event of a pressure leak.

Question 12

In what order do the primary relief valves reset?

Answer 12

1. High
2. Low
3. Steam

Question 13

What is the function of the coolant treatment system?

Answer 13

1. To remove fission products from the coolant in order to allow access to the reactor core after shutdown.
2. Gives a connection to the sampling system before and after the ion exchange column.
3. Ensures water discharged is at the lowest possible radioactive level.
4. Removal of decay heat during LPDHR

Question 14

Where does HP discharge from the coolant discharge system go to?

Answer 14

MUD vessel overboard

Question 15

What are the subsections of the coolant makeup system?

Answer 15

1. Recirculation system (normal)
2. Back up system (DE-OX/Demin system)
3. Emergency system

Question 16

Components of the primary shield system?

Answer 16

1. A steel tank surrounding the RPV which contains:
   i. RCFW cooling coils
   ii. Neutron detectors
   iii. Core catcher
   iiii. Test source track
2. A shield water head tank with interconnecting piping and valves.

Question 17

2 methods of using the HPDHR system

Answer 17

1. Forced high pressure decay heat removal (FHPDHR)

2. Natural high pressure decay heat removal (NHPDHR)

Question 18

State the system code for the coolant treatment system?

Answer 18

W