CHANGE OF PRODUCT IN
AIRCRAFT REFUELERS
Change of product in mobile refuelers is
performed according to table 7-2. Product used to
flush tanks and piping MUST be treated as
contaminated fuel. Samples must be visually
inspected for sediment and water, and the specific
gravity of each must check within 0.5 of the corrected
API of the appropriate product in storage.
Change of Product in
Storage Tanks
The Naval Petroleum Office must be contacted
concerning instructions for the change of product
grade in storage tanks.
ASHORE AVIATION FUELS SAFETY
LEARNING OBJECTIVE: Describe the safety
requirements and procedures that must be
followed during fueling operations ashore.
This section contains safety procedures and re-
quirements that either are general in nature and
therefore not covered in other chapters of this
manual or are extremely important and repeated
here for emphasis. Any departure from the
procedures of this section may adversely affect the
overall safety of the operation being performed.
Although the procedures and requirements con-
tained in this manual are as complete as possible,
they are no substitute for experience and a thorough
knowledge of aviation fuels and their inherent
Table 7-2.—Change of Grade Procedures for Aircraft Refuelers
LEGEND:
A. Drain, fill with desired product.
B. Drain, flush 300 gallons (600 gallons if total filter/separator capacity is 600 gpm) of desired product,
drain, fill with desired product. recirculate, sample and test. Pay particular attention to sumps,
pumps, filters, hoses and other components likely to trap quantities of liquid.
C. Drain, steam clean, and dry. Remove fuel from all refueling system components—that is, sumps,
pumps. filters, hoses, and piping—prior to initiating steam cleaning. Replace the filter separator and
monitor elements.
D. Drain, gas-free, and fill with desired product.
7-28
