DCASE Final Exam
What are the locations the DC Book is maintained? - ANS-Master copy is in DCC
Other copies are each DCRS and the bridge
What happens when discharge pressure is higher at the fire pump? How can you
adjust? - ANS-the flow from the pump is lower so you can reduce the number of pumps
online
What is an open-head and closed-head sprinkler? - ANS-open - all heads spray
closed - only heads opened by heat spray
What casualty power permissions do you need? - ANS-CHENG - designated the source
DCA - casualty power route
What happens when the flow from the fire pump is higher then designed flow rating?
How can you adjust? - ANS-The discharge pressure at the pump is lower so you can
place additional pumps online
Who periodically updates the DC plates? - ANS-Periodic updates are performed by the
DCA through pen and ink changes.
What is the 3M instruction? - ANS-OPNAVINST 4790.4
When is the DC watch log not required? - ANS-When CCS and DCC are combined and
the information is provided in the engineering log
How long is a GFE certification maintained? - ANS-All log forms are maintained for a
period of 12 months from completion date of the specific job for which they were
generated
When do you conduct the underwater hull inspection? - ANS-All hulls are inspected
18-24 months prior to a CNO availability
How do you update an AEL? - ANS-Using a fleet cosal feedback report
, What two bills does the DCA not maintain? - ANS-Dry docking
Mass casualty
Who is responsible for providing DCPOs? - ANS-Department Head
Who is responsible for nominating DCPOs? - ANS-Divo
What are the qualification procedures for welders? - ANS-Initial: A school for the U53A
NEC, 75% passing on a written exam
Requal: quarterly demonstrate process on a test assembly
Annual: visual inspection
Who is responsible for maintaining the audible welder's file? - ANS-Division officer
What are the NDT Methods? - ANS--Radiographic testing: shows imperfections within
the weld using an X-ray of the test area.
-Ultrasonic Testing: measures sound waves that indicate whether or not a weld has a
universal thickness.
-Liquid Penetrant Testing: uses a dye and developer to indicate imperfections that are
open to the surface in the weld.
-Visual and Dimensional Testing: inspects and measures specified dimensions to check
for proper joint design and surface defects
-Eddy Current Test: detects characteristics surface and subsurface flaws in conductive
materials - a probe containing a coil of conductive wire is excited with an alternating
electrical current, which produces a magnetic field.
-Magnetic Particle Testing: used to indicate imperfections of the weld at or below the
surface. A magnetic field is forms around the test area by passing an electric current
through the test object, and iron particles are sprinkled over the surface.
What is the most widely used corrosion control procedure? - ANS-The application of
protective coatings
What are the locations the DC Book is maintained? - ANS-Master copy is in DCC
Other copies are each DCRS and the bridge
What happens when discharge pressure is higher at the fire pump? How can you
adjust? - ANS-the flow from the pump is lower so you can reduce the number of pumps
online
What is an open-head and closed-head sprinkler? - ANS-open - all heads spray
closed - only heads opened by heat spray
What casualty power permissions do you need? - ANS-CHENG - designated the source
DCA - casualty power route
What happens when the flow from the fire pump is higher then designed flow rating?
How can you adjust? - ANS-The discharge pressure at the pump is lower so you can
place additional pumps online
Who periodically updates the DC plates? - ANS-Periodic updates are performed by the
DCA through pen and ink changes.
What is the 3M instruction? - ANS-OPNAVINST 4790.4
When is the DC watch log not required? - ANS-When CCS and DCC are combined and
the information is provided in the engineering log
How long is a GFE certification maintained? - ANS-All log forms are maintained for a
period of 12 months from completion date of the specific job for which they were
generated
When do you conduct the underwater hull inspection? - ANS-All hulls are inspected
18-24 months prior to a CNO availability
How do you update an AEL? - ANS-Using a fleet cosal feedback report
, What two bills does the DCA not maintain? - ANS-Dry docking
Mass casualty
Who is responsible for providing DCPOs? - ANS-Department Head
Who is responsible for nominating DCPOs? - ANS-Divo
What are the qualification procedures for welders? - ANS-Initial: A school for the U53A
NEC, 75% passing on a written exam
Requal: quarterly demonstrate process on a test assembly
Annual: visual inspection
Who is responsible for maintaining the audible welder's file? - ANS-Division officer
What are the NDT Methods? - ANS--Radiographic testing: shows imperfections within
the weld using an X-ray of the test area.
-Ultrasonic Testing: measures sound waves that indicate whether or not a weld has a
universal thickness.
-Liquid Penetrant Testing: uses a dye and developer to indicate imperfections that are
open to the surface in the weld.
-Visual and Dimensional Testing: inspects and measures specified dimensions to check
for proper joint design and surface defects
-Eddy Current Test: detects characteristics surface and subsurface flaws in conductive
materials - a probe containing a coil of conductive wire is excited with an alternating
electrical current, which produces a magnetic field.
-Magnetic Particle Testing: used to indicate imperfections of the weld at or below the
surface. A magnetic field is forms around the test area by passing an electric current
through the test object, and iron particles are sprinkled over the surface.
What is the most widely used corrosion control procedure? - ANS-The application of
protective coatings
