2.11.1.2
Battery Charger
A current-limiting battery charger, conforming to UL 1236, shall be
provided to automatically recharge the batteries. The charger shall be
capable of providing both automatic float charging and equalizing charging
of the battery installation. The charger shall be capable of recharging
fully depleted batteries within [8] [_____] hr and providing a floating
charge rate for maintaining the batteries in a fully charged condition. An
rate and voltage. The charger shall have alarm functions providing
indications of low battery voltage, high battery voltage, and battery
charger malfunction.
2.11.2
Compressed Air Starting System
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NOTES: Delete this paragraph and subparagraphs in
their entirety if an electric starting system is
specified.
The complete compressed air system should be shown
on the plans. Two receivers, redundant piping, and
two compressors may be required so that starting
capability is not lost when tank maintenance is
required. Valve arrangement should permit any
receiver to be removed from service, drained,
repaired, or replaced without loss of starting air
from the system. The check valves between the plant
air system and the air starting receivers should be
considered to ensure that failure of the plant air
system does not deplete the backup supply. The
designer should analyze various starting scenarios
and determine the necessity of providing a gasoline
or diesel engine-driven compressor for a black-plant
(no electrical sources available) start-up.
Each compressor should have sufficient capacity to
refill the air starting system air receiver in a
maximum of 3 min. The receiver shall be sized to
crank the largest engine for 15 sec at an ambient
temperature of 21 degrees C (60 degrees F) without
recharging.
Either the air-motor starting option or the cylinder
injection starting option should be used and the
other paragraph deleted.
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A compressed air starting system shall be provided. The starting system
shall use station service air. The system shall be furnished complete with
oilers, regulators, and solenoid control valves. The starting system shall
be air motor type with a working pressure of 1.03 MPA 150 psig or cylinder
injection type with a working pressure of 2.07 MPA 300 psig. The
compressed air system piping shall be as specified in Section 15400A
PLUMBING, GENERAL PURPOSE.
2.11.2.1
Air Filter
An air filter shall be installed upstream of the air connection to each
SECTION 15133A
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