Clarke FG2000 Spezifikationen PDF herunterladen (Seite 8)

Recommendations and Instructions

for Hot Torquing Gage Glasses and

Probe Type Devices

When a new piece of equipment, whether a Gage Glass or a Probe* type device is

installed, the hot torque procedure must be performed. This ensures that all bolting

and components are properly seated for optimum performance. This procedure

must also be performed after any maintenance is done to the equipment. Note that

only the affected components, such as the installation of a new probe or glass kit,

need to be hot torqued.

All work must be done by a qualified technician. All plant rules and procedures

must be followed, including any lock out / tag out requirements. Verify that all

alarms and trips have been by-passed on probe columns before any maintenance

is performed, to prevent any false alarms or wiring hazards.

The hot torque procedure should be performed as follows:

1) Isolate the gage glass or probe device from any pressure.

2) Fully open the drain valve to evacuate any built up pressures and to allow the

contained steam and water to escape during equipment warm up.

3) Slowly open the steam valve to allow a gentle rush of steam to flow through the

equipment. This should take approximately 5 – 10 minutes. The observer should

see the High Temperature lubricant “sizzling” and smoke emanating from the gage

of column. This is an indication that the equipment has reached the operating

temperature.

4) When the equipment has been properly heated, close the steam valve. The drain

valve should remain open to allow any residual steam or pressureto escape.

5) Immediately re-torque the equipment to the correct values stated in the applicable

instruction manual. There should be movement of approximately 1/8

of a turn or

more.

6) If there is no movement of the bolting or probes, the equipment was not heated

properly. Repeat the procedure.

7) Once the hot torque procedure is completed, close the drain valve, and the

equipment can be put back into service. Carefully check for any leaks in the

equipment and verify proper operation of all illumination, relay controls and wiring,

or other accessories.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Keine Kommentare

Clarke FG2000 Spezifikationen Seite 8