8/13/25, 2:47
PM
RCO BOARD EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
LATEST UPDATE GRADED A++ 2025/2026
Terms in this set (304)
What NSTM governs F- NSTM 541
76?
What NSTM governs JP-5? NSTM 542
What is another name for DFM
F-76
What is another name for F-44
JP-5
What is the Auto Ignition 450F
Temperature for fuel?
What is the minimum 140F
flashpoint for fuel?
What is the pour point of 30F for F-76, 21F for JP-5
fuel?
F-76 FOCM testing 5 minutes after start and every 8 hours after, FWD
40ppm CFD is 2.64mg/l
What is the criteria for 40ppm F-76, 10ppm JP-5
FWD?
Define Clear and Bright Clear is the absence of visible particulate
for fuel matter, bright is the absence of visible
suspended water
What is Sat BS&W for 0.1% Shipboard or Navy and .05% Non-DOD.
shipboard or Navy
supplier and Non-DOD?
How much sample goes 100ml each
in each centrifuge tubes?
What RPM and how 1500 +/- 10 RPM for 15 minutes plus 1 minute to get up to
many minutes does it speed
spin for?
1/
8
, 8/13/25, 2:47
PM
What is the criteria for 2.64 mg/l F-76, 2.0 mg/l JP-5
CFD?
When do you take 5 minutes after start and every 4 hours in operation
samples for F-76 fuel
transfer
What test is done on F- Clear and Bright
76 fuel transfer sample
What sample codes are AOL and FSS
used on the fuel transfer
for F-76
Sample Code AOL for F- Clear and Bright, After On Line, transfer separator
76 discharge 5 min after start
Sample Code FSS for F-76 Clear and Bright, Filter Separator Sump 5 min after start
and every 4 hours
What samples and testing Beginning, middle and end BS&W if unsat C&B and every
are done during 15 minutes C&B
refueling?
Define specific gravity/API Weight of given volume of fuel vs. weight of an equal
volume of water at 60F
Why is it important to Weight Distribution, ballasting
know specific gravity/API
Define Demulsibility Ability of fuel to separate adequately from water
Reasons for fuel testing to establish the level of contamination, to
ensure that the fuel can be stored safely, to
establish the density of the fuel for weight
distribution and heating value
What equipment uses F- MPDE's, SSDG's, Small Boats, Mission Package Equipment
76?
Subsystems of F-76 Fill, transfer, service and stripping
Location of fueling 02 Level port side frame 64 and Main Deck Port
stations and Stbd bunker stations side frame 54
How much water does removes water below 15 ppm
FOCM remove
What NSTM govern Diesel NSTM 233
Engines
What NSTM governs Gas NSTM 234
2/
8
PM
RCO BOARD EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
LATEST UPDATE GRADED A++ 2025/2026
Terms in this set (304)
What NSTM governs F- NSTM 541
76?
What NSTM governs JP-5? NSTM 542
What is another name for DFM
F-76
What is another name for F-44
JP-5
What is the Auto Ignition 450F
Temperature for fuel?
What is the minimum 140F
flashpoint for fuel?
What is the pour point of 30F for F-76, 21F for JP-5
fuel?
F-76 FOCM testing 5 minutes after start and every 8 hours after, FWD
40ppm CFD is 2.64mg/l
What is the criteria for 40ppm F-76, 10ppm JP-5
FWD?
Define Clear and Bright Clear is the absence of visible particulate
for fuel matter, bright is the absence of visible
suspended water
What is Sat BS&W for 0.1% Shipboard or Navy and .05% Non-DOD.
shipboard or Navy
supplier and Non-DOD?
How much sample goes 100ml each
in each centrifuge tubes?
What RPM and how 1500 +/- 10 RPM for 15 minutes plus 1 minute to get up to
many minutes does it speed
spin for?
1/
8
, 8/13/25, 2:47
PM
What is the criteria for 2.64 mg/l F-76, 2.0 mg/l JP-5
CFD?
When do you take 5 minutes after start and every 4 hours in operation
samples for F-76 fuel
transfer
What test is done on F- Clear and Bright
76 fuel transfer sample
What sample codes are AOL and FSS
used on the fuel transfer
for F-76
Sample Code AOL for F- Clear and Bright, After On Line, transfer separator
76 discharge 5 min after start
Sample Code FSS for F-76 Clear and Bright, Filter Separator Sump 5 min after start
and every 4 hours
What samples and testing Beginning, middle and end BS&W if unsat C&B and every
are done during 15 minutes C&B
refueling?
Define specific gravity/API Weight of given volume of fuel vs. weight of an equal
volume of water at 60F
Why is it important to Weight Distribution, ballasting
know specific gravity/API
Define Demulsibility Ability of fuel to separate adequately from water
Reasons for fuel testing to establish the level of contamination, to
ensure that the fuel can be stored safely, to
establish the density of the fuel for weight
distribution and heating value
What equipment uses F- MPDE's, SSDG's, Small Boats, Mission Package Equipment
76?
Subsystems of F-76 Fill, transfer, service and stripping
Location of fueling 02 Level port side frame 64 and Main Deck Port
stations and Stbd bunker stations side frame 54
How much water does removes water below 15 ppm
FOCM remove
What NSTM govern Diesel NSTM 233
Engines
What NSTM governs Gas NSTM 234
2/
8
