Plidco FLANGE+REPAIR RING Instrucciones De Instalación página 9

Mainlining Sealant Reduction Recommendations
Mainlining of sealant is the inadvertent injection of sealant into the process stream. This could cause
issues for the operator if there are no traps, screens, or other methods of catching debris before critical
components are reached. Sealant could cause a build-up and possible blockage that could cause an
over pressurization situation. Below are listed some recommendations for mitigating this risk.
• Use of a curing sealant and injecting into the sealant injection port farthest from the leak.
• Monitoring the amount of sealant injected. A calculation can be done to approximate the amount
of sealant required.
• Injection of only 75% to 85% of the sealant and allow some time for the sealant to harden. When
injecting the remaining sealant, a larger plug would reach the leak first rather than if continuing
to inject until full.
• Placing a chunk of sealant on the outside of the pipe near the PLIDCO Flange+Repair Ring will
let you know the approximate cured status of the sealant inside the PLIDCO Flange+Repair
Ring.
• Increasing the time duration for injecting sealant. Do not stop the flow of sealant, but continue to
inject sealant in order to keep process materials/fluids out of the uncured sealant. By monitoring
the sample sealant piece placed on the pipe, it will indicate approximately how cured the sealant
is inside the PLIDCO Flange+Repair Ring.
• Watch for an abrupt drop in injection pressure that could indicate a possible extrusion into the
process stream.
Figure 5
Page 8 of 12 IP-008
Revision 3