I
NDUSTRIES
, I
NC
.
I
NDUSTRIES
, I
NC
.
Since 1982
GripSafe Patents:
US – 9,927,058, 9,810,364 | CA – 3,004,787 | European Registration – 00626264-0001
Other US and Foreign Patents Pending
www.USAIndustries.com | (713) 941-3797
©2019, USA Industries, Inc.
FRM-23.1 Rev.B
CAUTION:
If at any time during hydro testing a popping or clicking sound is heard,
STOP
IMMEDIATELY
and slowly release the pressure from the system. Popping or clicking sounds during
hydro testing could be a sign of the
Wedge Gripper
slipping, cracking, or one of the plug components
failing. Remove the plug from the pipe or fitting and inspect for damage.
Contact USA Industries
for further assistance.
•
It may be desirable to attach a gauge and vent hose assembly, or a backpressure monitoring
tee, to the
Backpressure Vent Port
⑲
to bleed off any backpressure. The hose should
be long enough to redirect vapor coming out of the vessel to a safe location away from
personnel that may be in the area. A valve may also be attached to this port to allow safe
backpressure removal before plug extraction (see
Section 7)
. If using a backpressure
monitoring tee, it may be useful to have a pressure gauge on the branch side of the tee
while connecting the run side to the
Backpressure Vent Port
⑲
and a ball valve. Further
advantages can be made by attaching a hose to the ball valve on the monitoring tee and
running the hose to vent to a safe location away from workers that may be in the area.
CAUTION:
Fast flowing gases or liquids through hosing can cause hose whip. Take caution to avoid
this, failure to do so may result in injury and/or equipment damage.
CAUTION:
Do not stand directly in front of the GripSafe DBB plug at any time. Installed plugs
should always be treated in this manner irrespective if the plug has backpressure on it or not.
CAUTION:
If backpressure develops, constant observation of pressure observed through the use of an
attached gauge and physical observation of pipe integrity is necessary to ensure safety to personnel and
equipment. Any bulging, enlargement or tapering of the pipe is an indication of over pressuring. The
Backpressure Rating listed in
Table 1
is for the pressure holding capability of the GripSafe Outboard
Wedge Double Block and Bleed and could be well beyond the system design limitations in which it
is being used to test.
Page
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