Plidco Flange+Repair Ring Manual Del Usuario página 10

This warning is only applicable to a non-leaking, underwater injection. When assembling a PLIDCO
product under water (or under any liquid) it is possible to build up thousands of pounds of pressure in
the annulus between the PLIDCO Flange+Repair Ring and the flanges. The pressure is caused by
compressing the fluid trapped in the annulus as the two PLIDCO Flange+Repair Ring halves are closed
and tightened. For injections over a leak, pressure in the annulus equalizes with the pressure in the
pipe. The pressure trapped in the annulus may have the following effects:
• The pressure rating of the split product is exceeded causing leakage or damage to the PLIDCO
Flange+Repair Ring.
• The flanges on which the PLIDCO Flange+Repair Ring is installed are damaged.
• Personal injury or death due to subsequent removal of a vent plug.
The Pipe Line Development Company strongly recommends that all sealant injection ports are open
during installation for all underwater injection applications.
Underwater Injection
WARNING!
RECOMMENDATIONS
Page 9 of 12 IP-008
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