Week 7

Question 1

What should you do if you see a steam leak?

Answer 1

Raise alarm immediately
Evacuate the compartment

Question 2

What does it mean if the bottle groups light is lit up on the SCC?

Answer 2

There is a leak in the system

Question 3

Initial actions after the APD alarms?

Answer 3

Adopting emergency stations
Don EBS throughout the submarine
Adopting containment state 1
No eating or drinking in submarine
Returning to safe depth
Stopping ventilation

Question 4

What are the primary and secondary containment boundaries?

Answer 4

Primary - 64 and 74 WT BH
Secondary -
Minimum - 26 and 88 DC BH
Maximum - Pressure hull

Question 5

How do we secure primary containment?

Answer 5

Automatically, by the containment automatic isolation system (CAIS)
Remotely by manoeuvring room watchkeepers using the containment manual initiation switch

Question 6

What does ALARP stand for?

Answer 6

As low as reasonably possible/practicable

Question 7

Contents of a reactor accident box?

Answer 7

Potassium iodate tablets
Radiation monitoring equipment
Documents

Question 8

Hazards associated with a reactor accident?

Answer 8

Personnel contamination onboard
Personnel contamination in vicinity
Airborne contamination external sub
Water contamination external to sub
Long-term contamination issues regarding environment

Question 9

What is the CL we use for reducing electrical load on the battery whilst the reactor is shutdown?

Answer 9

CL57

Question 10

What does the ME department increase their manning to when an EOP occurs?

Answer 10

One full 6 man team on watch
A second full watch

Question 11

When will the reactor be started up alongside?

Answer 11

Prepare for sea
Conduct plant proving

Question 12

Key differences between a scram alongside and at sea?

Answer 12

All scrams will be full scrams
Both TGs will be shutdown
AC shore supply will be reconnected to support AC and DC loads
Reactor restart will be a controlled evolution

Question 13

How are the crew protected from radiological hazards?

Answer 13

Time
Shielding
Distance
ALARP

Question 14

What is the use of pyrotechnics?

Answer 14

Signal to the surface
Simulate a torpedo attack
Mark position of sunken submarine
Indicate the emergency surfacing
Mark position of a sub in exercise
Mark position of man overboard
Send a distress signal
Search and rescue operations

Question 15

How long does a MOB marker emit smoke and lights flash for?

Answer 15

Orange smoke 15-30 minutes
Two lights 90 minutes

Question 16

Actions for an accidental shearing of shear pins on smoke candles or grenades?

Answer 16

Raise the alarm - LVA
Place store in safety capture bag
Engage velcro strap on bag
Stand well back
Don EBS
Brief command
Be prepared to use FF equipment
Dispose of the store

Question 17

Actions for accidental shearing of pins while loading the SSE?

Answer 17

Continue to load the store quickly
Inform command and obtain permission to fire immediately
Failures of stores are to be reported iaw JSP

Question 18

Actions in event of MOB marker accident?

Answer 18

Raise the alarm
Submarine to emergency stations
Don EBS in vicinity
If possible, throw overboard
Leave in transportation bag closed
Monitor compartments for CO, CO²

Question 19

Indications of an OTTO fuel spill?

Answer 19

Red/Orange liquid
Severe nasal congestion
Headaches
Vomiting
And finally, DEATH 💀

Question 20

Indications and hazards of a JP10 fuel spill?

Answer 20

Major hazard is increased risk of fire
Visually clear colourless liquid
Smells like mothballs or kerosene

Question 21

Indications and hazards with a HAP leak?

Answer 21

Dries to form a highly explosive crystal
Colourless liquid
Identified using litmus test 1-3pH

Question 22

Which coloured bag are used for which fuel spill?

Answer 22

Yellow - OTTO
Blue - HAP
Green - OTTO & HAP
If HAP is present, then bag must contain 1 litre of fresh water

Question 23

Where are manual flood alarms typically located?

Answer 23

On bulkheads near entrance/exit of compartments on lower levels

Question 24

Ways of raising the alarm in case of flooding?

Answer 24

LVA
999
Integrated communication system (ICS)
Manual flood alarm

Question 25

Possible indications of a flood?

Answer 25

Water ingress into the submarine Change in flow noise Pressure rise in compartment Change in depth alongside - draught Change in attitude Ship control & manoeuvring indications Platform management system warnings

Question 26

Information required when communicating with shore authorities of flood?

Answer 26

State of the reactor Location of the flood Initial actions carried out Personnel onboard

Question 27

Indications of a hydraulic burst?

Answer 27

High pressurised mist or pool of fluid Loud hissing noise Smell is not easily identifiable Slight tangy taste Indications on PMS of pressure drop

Question 28

**Systems that may need to be operated by hand on loss of hydraulics?**

Answer 28

Hydroplanes and steering Weapon handling Masts Mast shutters System valves Blow valves

Question 29

**Initial actions to be carried out in the event of a weapon fuel spill?**

Answer 29

Don EBS Raise the alarm Evacuate personnel Shut the WSC hatch and bulkhead door Decontaminated personnel are dressed in protective equipment

Question 30

**Items contained in the primary coolant spill kit?**

Answer 30

Tissues Absorbent tubes Rubber gloves Latex gloves Goggles Spill signs Plastic bags Tape

Question 31

**Initial actions to be carried out by the decontamination party in the event of a primary coolant spill?**

Answer 31

Collect decontamination pack and monitoring equipment Muster at the decontamination centre One party member to dress on full wet protective clothing Inform the DCHQ/SCOOW when the decontamination centre is ready One party member escorts casualties to the centre Establish the boundaries of the "No Go" area and arrange sentries

Question 32

**Actions that are taken when a pollution spill is detected in harbour?**

Answer 32

QM/OOD to inform KHM Initiate local clean-up processes Raise a report of the incident

Question 33

**Equipment failures which cause a loss of main electrical supplies?**

Answer 33

Turbo generators MSCs Diesel generators Main breakers Load centre breakers MCCBs Shore supply

Question 34

**Items that the tiger teams carry?**

Answer 34

Test equipment Comms with DCHQ Tools Electrical composites Kill cards

Question 35

**Initial actions you would take discovering a hydraulic burst?**

Answer 35

Raise the alarm Don EBS Attempt to contain the mist with dry powder extinguiser

Question 36

**Personnel that close up at the FWD local control panel in the event of a control surface failure?**

Answer 36

FWD staff Stood down planesman S&DC maintainer

Question 37

**External services/authorities that are to be informed in the event of a flood onboard?**

Answer 37

KHM Defence fire service Local area fire brigade Adjacent vessels Diving group NSRS Nuclear accident response organisation

Question 38

**Initial actions that should be taken by the control room team in the event of a standby collision warning on the surface?**

Answer 38

If snorting. Stop snorting/ventilation Carry out EOP for emergency stations Adopt the brace position

Question 39

**Who will raise the alarm if a collision is imminent when surfaced and at periscope depth?**

Answer 39

Surfaced - OOW Periscope depth - Optronics operator

Question 40

**Remote indications that could indicate a possible flood in the submarine?**

Answer 40

Bilge high level warning Float flood alarm Manual flood alarm