Reactor officer or reactor operator
REA and responsibility?
Reactor electrical assistant
Responsible to the RO for reactor protection and indications and electrical distribution system
MPA and responsibility
Main propulsion assistant
Ensures continuous operation of the main engines, SSTGs, and distilling units
CRA and responsibility?
Chemistry and radcon assistant
Responsible to the RO for the proper water chemistry in the propulsion spaces and to supervise radiation controls
Engineering officer of the watch
Propulsion plant watch officer
What is the EOS and what does it do?
Enclosed operating station.
Main control station for each power plant
How many EOSs are there and where are they located?
One on 4th deck port
One on 4th deck starboard
Define RAR and how many are there?
Reactor auxiliaries room. 2
Dead in water.
Both reactors down causing lack of propulsion
What does reactor critical mean?
It's at a constant power level and is in good operating condition
What is reactor scram?
An emergency rapid shutdown of the reactor
What does TLD stand for and what is it used for?
Thermal luminescent dosimeter.
Measures exposure to radiation
What is ORSE?
Operational reactor safeguards examination
Used to test the crews ability to operate the reactors
What is an MMR?
Main machinery room
How many engines are on the ship? Where are the located?
4; each controlled by
#1 & #4 in #1 MMR
#2 & #3 in #2 MMR
How many reactors do we have onboard Nimitz?
What are the purposes of the reactor?
Steam for catapults
What was the first nuclear powered vessel?
USS Nautilus (sub)
Who is the father of naval nuclear power?
Admiral hyman Rickover
What was the first nuclear powered surface ship?
USS Long beach
What was the first nuclear powered aircraft carrier?
USS enterprise; 8 reactors
What us the fuel used for our reactors?
What type of reactor design is used in navy nuclear power plants?
Pressurized water (there is no boiling)
What type of distilling units do we use? Where are they located?
6 stage, flash type.
100k gallons per day
#1 & #2 in #1 MMR
#3 & #4 in #2 MMR
Define SSTG an where are they located?
Ships service turbine generator.
Used to power electrical loads underway
We have 4 total
#1 & #2 in #1 MMR
#3 & #4 in #2 MMR
What are the CTGs used for? Where are they located?
Coolant turbine generators.
Used to only supply power to the reactor coolant pumps
2 in each RAR
Name 3 watches in DC central.
Water control watch
What is the purpose of the main reduction gear?
Reduces the RPMs of the main engine to a usable speed by the ships propellers
Who makes our reactors?
Who was the second nuclear powered carrier?
What is the purpose of the reboiler system, how many are there, and where are they located?
Provides steam to the ship for hot water heaters, sculleries, etc
#1 - 1A shaft alley
#2 - 4B shaft alley
How many HPACs do we have and where are they located?
2 in each MMR
4 in each O2N2
How many ships service air compressors are onboard and where are they located?
1 in #2 RAR
1 in each MMR
What is the purpose of the control air system and where are the compressors located?
Control air is used to operate automatic valves in the propulsion plants
1 in each RAR
1 in each MMR
What is the allocated amount of water per person per day?
35 gallons per day
What is an EDG and the primary and secondary purposes?
Emergency diesel generators
Primary - used to power the reactor fill system in the event of a major reactor accident
Secondary - use to power the ships vital loads during casualties affecting the ships electrical system
Define CTG and its purpose?
Coolant turbine generator
Supplies power to the reactor coolant pumps
What is the difference between SSTGs and CTGs?
SSTGs supply power to the ships electrical system
CTGs are specifically for reactor coolant pumps
What are EPCPs and where are they located?
Electric plant control panels
Located in switch gear in #1 & #2 MMRs
Name 3 watches in the EOS.
Name 4 watches in the MMR
Chief machinery operator
Shaft alley patrol
Name 4 watches in the RAR.
Chief reactor watch
Reactor auxiliaries watch
RMA and responsibility?
Reactor mechanical assistant
Responsible for the proper operation of the reactor coolant system, steam generators and all auxiliary equipment required to operate these systems
What is the purpose if the main thrust bearing?
Transmits the thrust of the movement of the propeller in the water to the hull of the ship thereby moving the ship
Which shaft alley are the shaft seals located in?
The associated "C" section
What is the purpose if the guard valve?
To secure all steam to the main engine in the event of a casualty
What is meant by the term "cross-connected steam plants?"
When the main steam system is being supplied from one reactor plant to operate both plants equipment
Which is more reliable? Cross-connected or split? Why?
Split - a casualty in one plant won't affect the other
What is a trailing shaft?
No steam applied to the main engine and the shaft spins with the way of the ship
What is a locked shaft?
No steam applied to the main engine and the shaft is locked with the jacking gear to prevent the shaft from spinning
What are three advantages of nuclear powered ships over conventional?
Room for ammo/fuel
Higher sustainable speeds
Who is our RO?
What does PCC stand for?
Propulsion control console
What does MTT stand for? Purpose?
Nuclear propulsion mobile training team
AIRPAC training teams helps in prep for ORSE
Name 3 components in MMR
Name 3 components in RAR
Main feed pumps
Main feed booster
Where is #1 RAR located?
Just aft of fwd mess decks (7th deck)
Where is #1 MMR located?
Just below DCC (7th deck)
Where is #2 RAR located?
Aft mess decks even w/ salad bar (7th deck)
Where is #2 MMR located?
Aft mess decks chow line (7th deck)
Where is the general location of 1A and 4B shaft alleys?
Aft mess decks, port and stbd near the machines and 1st class mess
Name loads off the steam reboilers?
What is the purpose of the shaft seals?
Prevent sea water from coming into the ship through where the shaft penetrates the hull
How many DUs are there?
2 per plant
Where are the DUs located?
MMR upper level
What are the two purposes for water we make w/ DUs?
What is PWP? How many do we have?
Potable water pump
2 per plant
Which SSTGs can be used for operating coolant pumps?
2 and 4
Where are the EDGs located? What fuel do they use?
1 & 2 - fwd EDG room
3 & 4 - aft EDG room
What is the purpose of the main condenser?
Condenses all steam from the main engine turbine
What is the purpose of the DFT?
Keeps gasses out of the secondary water
Name 2 components of the primary loop.
Reactor coolant pump
Name 2 components on the secondary loop
HPAC air supply
3500 - 4200 PSI
110 - 125 PSI
70 - 85 PSI