f) Place exhaust ports at approximately 18 inches
(450 mm) above the floor. To avoid exhausting H-70 vapors
into areas where personnel are present, such as walkways or
escape paths, consider placing exhaust ports above the roof
g) Place a switch on the outside of the building,
near an entrance that will allow personnel to turn on all
exhaust fans prior to entering the facility This will purge
the facility of any H-70 vapors that may have collected in the
facility while not in use.
h) Maintain temperature in regulated areas below
consistent with ventilation for personnel comfort.
10.4.3.13 Waste Product Disposal
a) Add water to H-70 spills in a 100 to 1 ratio to
reduce the H-70 concentration to less than 1 percent. Size
collection tank accordingly.
b) Use neutralizers, such as 65 percent granular
calcium hypochlorite (HTH), 14 percent bleach, and 5 percent
bleach to stabilize the H-70/water mixture.
c) Provide storage for HTH away from hydrazine and
other potentially reactive materials. HTH is extremely
d) Consult with local base bio-environmental
engineer as to procedures for emptying the collection tank.
OTTO FUELS. Information on OTTO fuels is contained
in NAVSEA 56340-AA-MMA-010. Distribution of this document is
restricted. Requests for information are handled by Naval Sea
Systems Command. Refer to Section 2 of this handbook for