EOOW DDG FLTIIA - FOR DUMMIES | 257 QUESTIONS AND
ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTION
Define the term "clear and bright." Answer - Clear is the absence of particulate
matter (sediment),
Bright is the absence of free water, or other factors effecting color and clarity
When are LO samples required? Answer - 24 hours prior to start,
Daily while operating (include equipment in auto start),
Upon receipt of new oil,
Within 24 hours prior to transfer or oil,
When unusual conditions exist,
After an equipment casualty,
Test purifier sample 30 minutes after starting and at least one every four hours,
Equipment with sump capacities with 1 gallon or more
Discuss the requirements for a lube oil sample drawn from the MRG LO System
Answer - The MRG LO system is purifiable and therefore a sample is UNSAT if it
fails to meet the clear and bright test. The system can still be operated and a
BS&W must be conducted. The system must be placed on purification. Refer to
NSTM 262 for flow chart and more details
Discuss the requirements for a lube oil sample drawn from the CPP LO system
Answer - This uses NSTM 245 to determine sample criteria. A sample is
considered UNSAT after it fails the BS&W test with more than .1 SED and more
than .4 comb
,Discuss the requirements for lube oil sample drawn from a LSB Answer - This is
a non-purifiable system/sump. If the sample fails the clear and bright, the
transparency test or the visible sediment test must be preformed. If it still fails
those test then a BS&W test must be performed and if it is less than .1 SED and
less than .4 comb it is an SAT sample
At what speed and how long is the centrifuge used for when conducting a
BS&W test? Answer - 1500 RPM for 30 minutes
How do you conduct a transparency test on non-purifiable samples? Answer -
Place a PMS card behind bottom and read, if it can be read the sample is SAT
How do you conduct a visible sediment test? Answer - Let bottle sit for 10
minutes, the place the bottle on its side for 10 minutes. If sediment is greater
than 1/8th an inch or forms a solid line along the bottom, the sample is UNSAT
How long is the LOQM log kept on board? Answer - 2 years
What is the testing criterion for fuel filter separator discharge samples?
Answer - Free Water Detection test max allowable outcome is 40ppm,
contaminated Fuel Detection test allowable outcome is 2.64mg/L sediment
Discuss the test requirements for a fuel service tank sample Answer - clear and
bright
Where is the fuel service tank sample drawn from? Answer - Filter separator if
tank is online,
Purifier discharge if tank is on recirculation
,What is the minimum flashpoint of F-76? Answer - 140 degF
How often is fuel sampled during normal fuel service system operation?
(service tank that is online) Answer - Eight hours prior to use, the
filter/separator for the online service tank is tested 5 minutes after tank placed
online and every 4 hours after that
What are the maximum limits of BS&W during UNREP? Answer - 0.1% max
How often are head tank samples taken? Answer - Monthly
How is linear motion translated into radial motion in the CPP system? Answer -
The crosshead moves in a lineal direction, and is connected to the blades
creating the radial motion
How full can the tanks get during re-fueling operations? Answer - 95% at sea
and 85% in-port
How long is the FOQM log kept onboard? Answer - 6 months
How long are the Fuel, Oil and Water reports kept on board? Answer - 1 year
When is a heat stress survey required? Answer - when DB reaches >90 degF,
prior to EOCC drills that will last longer than 3 hrs,
upon CO request,
in the even of a heat stress casualty
, When is a follow up heat stress survey required? Answer - DB increases or
decreases 5 degF from previous surveys
When do you need to rush survey results to the CO? Answer - The current
watch rotation exceeds the recommend heat stress stay time
When is a time weighted mean? Answer - Allows watch standers to stay in the
space longer by allowing them to take breaks and cool off in a location cooler
than the watchstation
When are time weighted means applied during the course of standing watch?
Answer - In a hot environment where reduced stay times have been imposed
on watch/work stations
How do you verify an installed WBGT sensor is working properly? Answer -
DB>WB or GT>DB
What is the WBGT index? Answer - It is the combination of the WBGT, WB, &
DB temps, that actually affect you
Where are Dry Bulb thermometers required to be hung? Answer - Work of
watch stations in which a heat stress environment may occur, Non-ventalated
spaces that are normally not manned, but personnel may work in
Where are the required to be installed within the space Answer - In a spot that
provides a good representative sample of the entire spaces temp, should be
located at least 2 feet away from any ventilation sources, shall be hung with a
non-metal heat transferring material
What does PHEL stand for? Answer - Physiological Heat Exposure Limit
ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTION
Define the term "clear and bright." Answer - Clear is the absence of particulate
matter (sediment),
Bright is the absence of free water, or other factors effecting color and clarity
When are LO samples required? Answer - 24 hours prior to start,
Daily while operating (include equipment in auto start),
Upon receipt of new oil,
Within 24 hours prior to transfer or oil,
When unusual conditions exist,
After an equipment casualty,
Test purifier sample 30 minutes after starting and at least one every four hours,
Equipment with sump capacities with 1 gallon or more
Discuss the requirements for a lube oil sample drawn from the MRG LO System
Answer - The MRG LO system is purifiable and therefore a sample is UNSAT if it
fails to meet the clear and bright test. The system can still be operated and a
BS&W must be conducted. The system must be placed on purification. Refer to
NSTM 262 for flow chart and more details
Discuss the requirements for a lube oil sample drawn from the CPP LO system
Answer - This uses NSTM 245 to determine sample criteria. A sample is
considered UNSAT after it fails the BS&W test with more than .1 SED and more
than .4 comb
,Discuss the requirements for lube oil sample drawn from a LSB Answer - This is
a non-purifiable system/sump. If the sample fails the clear and bright, the
transparency test or the visible sediment test must be preformed. If it still fails
those test then a BS&W test must be performed and if it is less than .1 SED and
less than .4 comb it is an SAT sample
At what speed and how long is the centrifuge used for when conducting a
BS&W test? Answer - 1500 RPM for 30 minutes
How do you conduct a transparency test on non-purifiable samples? Answer -
Place a PMS card behind bottom and read, if it can be read the sample is SAT
How do you conduct a visible sediment test? Answer - Let bottle sit for 10
minutes, the place the bottle on its side for 10 minutes. If sediment is greater
than 1/8th an inch or forms a solid line along the bottom, the sample is UNSAT
How long is the LOQM log kept on board? Answer - 2 years
What is the testing criterion for fuel filter separator discharge samples?
Answer - Free Water Detection test max allowable outcome is 40ppm,
contaminated Fuel Detection test allowable outcome is 2.64mg/L sediment
Discuss the test requirements for a fuel service tank sample Answer - clear and
bright
Where is the fuel service tank sample drawn from? Answer - Filter separator if
tank is online,
Purifier discharge if tank is on recirculation
,What is the minimum flashpoint of F-76? Answer - 140 degF
How often is fuel sampled during normal fuel service system operation?
(service tank that is online) Answer - Eight hours prior to use, the
filter/separator for the online service tank is tested 5 minutes after tank placed
online and every 4 hours after that
What are the maximum limits of BS&W during UNREP? Answer - 0.1% max
How often are head tank samples taken? Answer - Monthly
How is linear motion translated into radial motion in the CPP system? Answer -
The crosshead moves in a lineal direction, and is connected to the blades
creating the radial motion
How full can the tanks get during re-fueling operations? Answer - 95% at sea
and 85% in-port
How long is the FOQM log kept onboard? Answer - 6 months
How long are the Fuel, Oil and Water reports kept on board? Answer - 1 year
When is a heat stress survey required? Answer - when DB reaches >90 degF,
prior to EOCC drills that will last longer than 3 hrs,
upon CO request,
in the even of a heat stress casualty
, When is a follow up heat stress survey required? Answer - DB increases or
decreases 5 degF from previous surveys
When do you need to rush survey results to the CO? Answer - The current
watch rotation exceeds the recommend heat stress stay time
When is a time weighted mean? Answer - Allows watch standers to stay in the
space longer by allowing them to take breaks and cool off in a location cooler
than the watchstation
When are time weighted means applied during the course of standing watch?
Answer - In a hot environment where reduced stay times have been imposed
on watch/work stations
How do you verify an installed WBGT sensor is working properly? Answer -
DB>WB or GT>DB
What is the WBGT index? Answer - It is the combination of the WBGT, WB, &
DB temps, that actually affect you
Where are Dry Bulb thermometers required to be hung? Answer - Work of
watch stations in which a heat stress environment may occur, Non-ventalated
spaces that are normally not manned, but personnel may work in
Where are the required to be installed within the space Answer - In a spot that
provides a good representative sample of the entire spaces temp, should be
located at least 2 feet away from any ventilation sources, shall be hung with a
non-metal heat transferring material
What does PHEL stand for? Answer - Physiological Heat Exposure Limit
