c) A signal light or alarm to indicate pump failure
when a pump is controlled automatically.
d) Reduced voltage starting if required by electric
utility supplier or, in all cases, for pump motors greater
than 50 hp (37 kW) and all vertical pumps.
e) EFSO buttons with lock-key reset at all pump
locations and at the central supervisory control station.
. For pumps over 150 horsepower
kW), provide protective shutdown devices with alarm at central
supervisory control station in the event of the following:
a) High pump case temperature due to blocked
b) Excessive pump vibration.
c) Mechanical seal or packing gland failure.
d) High discharge pressure or loss of discharge
e) Excessive motor vibration.
f) High motor winding temperature.
g) Electrical interlocks which will prevent starting
a pump if certain key valve settings are not correct and which
will cause a pump shutdown if a key valve setting is changed.
h) Loss of pump suction pressure.
i) High-bearing temperature and/or loss of cooling
FUEL ADDITIVES. Provide storage facilities which
store aviation turbine fuels with the equipment to inject fuel
additives if directed by Service Headquarters. This will
require proportional injectors, storage of additives, and
recirculation of tanks through piping with injectors. If the
additives have a corrosive characteristic, construct the
system, including storage tanks, tank appurtenances, pumps if
required, piping and associated fittings, valves, and injector