
IM-P198-02
MI Issue 5
14
3.2.2 Cold tap installation
Caution - Risk of danger: Cold tap
installation must only be done by qualified
personnel.
Process shutdown and line depressurisation
are required for cold tap installation. Use
Steps 1 to 4 below as a guide.
Step 1 -
Tap the pipe - The hole should be at least 50 mm (2") in diameter, nominally
50 mm (2") in diameter.
Step 2 -
For the 2" RIM10-600 series, thread the pipe nipple into the thread-o-let and
hand tighten. For the DN50 RIM10-900 series, weld the nipple to the weld-o-let,
welding the flange to the nipple.
Step 3 -
Important
- Attach the tap check tool to the end of the flowmeter stem before
proceeding:
-
Connect the flowmeter to the thread-o-let or weld-o-let.
-
Verify that the bleed valve is closed.
-
Open the isolation valve.
-
Turn the retractor handle (RIM10-600 series) or wheel (RIM10-900 series)
to insert the tap check tool into the pipe and then, retract the tap check tool
completely.
-
Remove the flowmeter from the thread-o-let (weld-o-let) and inspect the tap
check tool for damage.
-
If any has occurred, check the installation for possible clearance problems.
Step 4 -
Remove the tap check tool and attach the turbine sensor (rotor assembly) to the
end of the stem:
-
Verify that the screw and safety wire on the rotor assembly are correctly installed.
-
Reconnect the flowmeter to the thread-o-let.
-
Verify that the bleed valve is closed.
-
Fully open the isolation valve.
-
If the flowmeter is supplied with a pressure transmitter, open the bleed valve.
-
Do not lower the turbine sensor into the pipe before calculating the proper
insertion depth.
Fig. 8 RIM10-600
Bleed valve
Bronze isolation valve
Pipe nipple
Thread-o-let
Содержание RIM10 Series
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