Installation of Receptacle Plugs

Receptacle Plugs
Q4 2020 - Q1 2021
Norwegian Continental Shelf
Project Manager:
Bozidar Sevic

Project Description


IK Subsea designed and supplied four double barrier plugs to effectively seal two 2” flushing lines/ports associated with the 12” production flowlines.


The client encountered issues with the two 2” isolation valves situated between the receptacle and the 12” line, which did not achieve a complete seal at low pressure. An effective seal was critical to allow production start-up.  Consequently, the client sought the installation of double barrier plugs in the receptacle to ensure the necessary isolation following the completion of the flushing operation


IK Subsea conducted an initial study to evaluate various sealing options, ultimately determining that the receptacle plug was the most optimal choice.


The plugs were required to be in place before the commencement of the first oil recovery. The design and manufacturing processes were efficiently executed within a span of 3 weeks, facilitated by the Competency Based Emergency Repair (CBER) method. This methodology, developed and employed by IK over the past 15 years, enables swift responses to urgent deliveries.


Subsequently, the plugs were dispatched offshore and successfully installed onto the subsea receptacles in accordance with the agreed contract. This ensured that the client could initiate field startup as originally planned.


Neptune Energy
Project Start/End Date:
Q4 2020 – Q1 2021
Location of Project/ Region
Norwegian North sea
Dimension: (inches)
2” isolation plug
Installation method:
Design code:
DNVGL-RP-F113 EN13445-3: 2014 EN ISO 13628-8:2002
Plugs and caps: ROV operated double barrier plug
Design pressure 250 bar
Flushing capability:
Test port. Gas temp: 7 °C