GEK 116862 Inspection and Maintenance Instructions for 7FA.05 Gas Only and Dual Fuel Gas Turbines
XIX. FIRE PROTECTION SYSTEM
WARNING (CO
2
FIRE PROTECTION ONLY)
CO
2
FIRE SUPPRESSANT, IN A CONCENTRATION SUFFICIENT TO
EXTINGUISH FIRE, CREATES AN ATMOSPHERE THAT WILL NOT
SUPPORT LIFE. IT IS EXTREMELY HAZARDOUS TO ENTER THE
COMPARTMENT AFTER THE CO
2
SYSTEM HAS DISCHARGED.
ANYONE RENDERED UNCONSCIOUS BY FIRE SUPPRESSANT
SHOULD BE RESCUED AS QUICKLY AS POSSIBLE AND REVIVED
IMMEDIATELY WITH ARTIFICIAL RESPIRATION OR BY MOUTH-
TO-MOUTH RESUSCITATION. THE EXTENT AND TYPE OF
SAFEGUARDS AND PERSONNEL WARNINGS THAT MAY BE
NECESSARY MUST BE DESIGNED TO MEET THE PARTICULAR
REQUIREMENTS OF EACH SITUATION. IT IS RECOMMENDED
THAT PERSONNEL BE ADEQUATELY TRAINED TO COPE WITH
SUCH AN EMERGENCY.
A. System Package Lagging
The joints in the lagging panels, roof, doors, and base should be inspected for tightness. If the joints
are not tight, fire protection effectiveness could be reduced. The easiest way to make the inspection is
to stand inside each compartment on a bright, sunny day with the lights off. No light should be visible
through the joints. Particular attention should be paid to all doors. The joint between the generator
compartment and the back side of the exhaust plenum, plus the joint between the generator and the
turbine base should be checked in particular. In general, joints which are not tight should be fitted
with new gaskets. Doors can be tightened by adjusting the striker plates.
B. Water Mist System (as applicable)
Refer to Water Mist Fire Protection section of the Operation and Maintenance Manual for
information on system overview and inspection and maintenance instructions for the Water Mist
System. Water Quality requirements for the Water Mist system are included as well as Air/Nitrogen
quality requirements for High pressure Cylinders.
C. CO
2
High Pressure System (Clean Agent Systems)
The CO
2
fire protection system should be visually inspected to see that it is in proper working order.
The pressure gauges on the pilot-operated cylinders should be checked to be sure the cylinders are at
the proper pressure. The pressure is dependent on the cylinder temperature. For carbon dioxide, at
50°F (10°C) the pressure should be about 650 psig (44.8 bars); at 70°F (21°C) about 840 psig (57.9
bars); at 105°F (41°C) about 1250 psig (86.2 bars). For Halon 1301, at 50°F (10°C) the pressure
should be about 530 psig (36.5 bars); at 70°F (21°C) about 600 psig (41.4 bars); at 105°F (41°C)
about 750 psig (51.7 bars). Check the dampers to ensure they are unobstructed and properly latched.
D. CO
2
High Pressure Storage Cylinders (Clean Agent Systems)
Disconnect the discharge heads from all cylinders and the solenoid pilot valve assemblies from the
pilot cylinder. Weigh each cylinder. If a cylinder shows more than 10 percent loss in net weight, it
should be refilled, or replaced.
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