Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Week 5 > Revision sheet > Flashcards

Revision sheet Flashcards

1
Q

What is the function of the health physics organisation onboard and how is this achieved?

A

Routinely monitor radiological and atmospheric conditions on board.

Achieved by:
1. Issue personal dosimetry and maintain individual reports
2. Atmosphere and environmental monitoring
3. Radiochemistry
4. Radiation and contamination monitoring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are 5 different types of radiation

A
  1. Alpha
  2. Beta
  3. Neutrons
  4. Gamma
  5. X-rays
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does ALARP stand for?

A

As low as reasonably practicable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the 3 principles that are employed to achieve ALARP?

A
  1. Time
  2. Distance
  3. Shielding
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the 3 objectives that are also employed to maintain ALARP?

A
  1. Justify
  2. Optimise
  3. Limit
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

State 2 types of radiological surveys that are carried out and what they mean

A

Routine:
- Carried out around RC bulkheads at regular intervals.
- Ensures that primary and secondary shielding are intact

Emergency:
- Conducted after any collision/action damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

List the types of personal dosimetry used onboard

A
  1. TLD
  2. PED
  3. Records
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

List 8 precautions for entering the RC

A
  1. Reactor shut down
  2. Vent state red carried out
  3. Entry controlled
  4. EOOD/W permission obtained
  5. Protective clothing is to be worn at all times
  6. TLD and PED is to be worn at all times
  7. Brief given by tunnel monitor who will highlight high dose areas
  8. Eating and drinking prohibited
  9. Cuts are to be checked by the monitor and covered with a dressing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How many APD’s are fitted on board and where are they located?

A
  1. fwd in the DC equipment space
  2. aft in man room
  3. aft escape platform
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How many reactor accident boxes are on board and where are they fitted?

A
  • 1 deck WT flat by the fwd LET
  • aft escape platform stbd side
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

List the 5 contents of the reactor accident box

A
  1. ADM 300
  2. PD12i
  3. Potassium iodide tablets
  4. Mechanical kill cards
  5. Reactor event instructions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

List 2 fixed onboard radiation monitoring equipment

A
  1. Gamma alarm
  2. Radiac system
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

List 5 hand held onboard monitoring equipments

A
  1. ADM 300 V1A
  2. MK 32 NRM
  3. BSP 100
  4. XP 100
  5. Alpha probe
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

State the 6 pieces of equipment used for atmosphere monitoring?

A
  1. CAMS
  2. Drager tubes and pumps
  3. H2 contents meter
  4. MSA
  5. Analox
  6. Infraran
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

State the 5 members of the onboard health physics organisation

A
  1. XO
  2. Medical officer
  3. POMA
  4. LMA
  5. MA
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

State the 7 consoles and panels that make up man room

A
  1. MCD
  2. RSP
  3. PSP
  4. ESP
  5. ENV panel
  6. NWOOW and EOOW Comms consoles
  7. Minerva fire detection unit
17
Q

What is the manning requirement when the reactor is critical?

A
  1. Manoeuvering room manned 24/7 365
  2. Manned by qualified watch keepers
18
Q

What is the manning requirement when the reactor is shutdown alongside?

A
  1. Manned by shutdown supervisor
  2. Manned by shutdown watchkeeper
19
Q

What is the function of the NSRP?

A
  1. To engage uranium 235 in nuclear fission and produce steam
  2. Produce steam for the main engines for propulsion
  3. Produce steam for the TG’S for production of electricity
20
Q

What is meant by self sustaining?

A

When the TG’s are producing electricity for the SM without the use of ss

21
Q

How can the reactor be shutdown in an emergency

A

Full scram

22
Q

What is meant by the term full scram?

A

All 4 control rod groups are dropped into the core this stops fission completely

23
Q

What is meant by the term partial scram?

A

1 control rod group is dropped into the core, this stops the fission process for a limited period of time.

24
Q

List 5 causes of reactor scram

A
  1. Loss of heatsink
  2. Unidentified steam leak
  3. Loss of reactor control
  4. Primary coolant leak
  5. Parameters being exceeded
25
Q

What is the function of the containment system?

A

`1. To prevent the release of fission products from the rc and the submarines pressure hull
2. To protect the general public from the effects of a reactor event

26
Q

Explain the 3 containment boundaries

A

Primary - RC bulkheads and the surrounding pressure hull

intermediate - Airlocks, tunnel and pressure hull

Secondary - The whole submarine

27
Q

What is the CAIS system?

A

A system to automatically operate containment valves in the event of a hard or soft system leak.

28
Q

Where can containment be initiated from?

A

Manually via a switch on the environmental panel

29
Q

List 6 systems that are fitted with automatic valves

A
  1. LP bilge system (BS)
  2. Trim system (WS)
  3. Ventilation system (SBV)
  4. SG reliefs (MS)
  5. Chilled water system (AC)
  6. SG water sampling (MS)
  7. Atmosphere analysing (SA)
  8. Steam drains (SD)
  9. Air particle detector (SA)
  10. Tunnel pressure equalising (LPA)
    11, Medium pressure air (MPA)
  11. Feed transfer system (FT)
  12. Ballast system (WS)
  13. Aft AFFF system
30
Q

Describe plant state A

A

Plant pressure greater than 35 bar
or
plant temperature greater than 93 degrees c
or
More than one CRDM energised

31
Q

Describe plant state B

A

The reactor is shutdown
and
Plant pressure is less than 35 bar
and
Plant pressure is less than 93 degrees c
and
Not more than one CRDM energised

32
Q

Describe plant state C

A
  1. The plant is shut down
  2. Plant pressure less than 35 bar
  3. Plant and pressuriser temperature are less than 93 degrees c
  4. All CRDM’s de-energised and fuses removed
  5. Two independent means of decay heat removal
  6. The decay heat rate is less than heat removal capacity of the decay heat removal system
  7. Plant pressure not being maintained by a steam bubble

Week 5 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions