Revere 45-AE4V, Руководство по обслуживанию

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LEAKAGE TEST PROCEDURES - OFFSHORE
GENERAL
Each inflatable part of the main structure must be tested separately. All test results should be
recorded on the Offshore Elite Test Record Chart (See Table B). The structure consists of all
the chambers served by the gas inflation system. These include:
• The upper buoyancy chamber, with a transfer valve for the arch-tube installed on the right
hand side of the entrance.
• The lower buoyancy chamber, with a transfer valve for the boarding ramp installed on the front.
• The inflatable floor (manually inflated)
The arch-tube assembly, mounted on the upper buoyancy tube will be fully inflated when the chamber
is tested; it will be therefore tested with the chamber.
INFLATABLE CHAMBERS (AIR HOLDING TEST)
Each chamber must be tested separately, but simultaneously over a period of approximately 1 hour.
1. Using an inflation tool (Part No. 95-41128-101) and clean, dry shop air, inflate the upper
buoyancy chamber to until the pressure relief valve (PRV) opens. This will also inflate the arch-
tube. (See Fig. 3) The PRV will open at 3.0 psig MAX and produce bubbles when covered with
soapy water. Using a manometer, record the pressure (psig) upon PRV release.
2. Follow the same procedure in Step One to inflate the lower buoyancy chamber. This will also
inflate the boarding ramp (See Fig. 4). Record the pressure (psig) upon PRV release.
3. Let both chambers stand for 15min. This will allow the chambers to stabilize. Air will stop
releasing from the PRV and bubbles should disappear.
4. Correct pressure using clean shop air to a test pressure of 2.000 +/-0.050 psig. Using a
manometer, check the pressure in the chambers. Record the initial tube pressure
(Pi
tube
)
,
temperature (
Ti)
, time, and barometric pressure (
Pi
amb
)
. Leave sitting for 1 hour.
5. Inflate the floor until firm and leave sitting for 1 hour.
Note: The floor will not be tested by means of a manometer.
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