Safety Considerations - REED PES8H Instructions D'utilisation

Safety Considerations

Pressure control situations requiring squeeze-off may involve working in the vicinity
of escaping gas. Consider the possibility and potential hazard of static electricity and
observe safety precautions. Precautions can be taken to dissipate the charge, and
minimize the possibility of an ignition. This will maximize the personal safety of the
crew. These precautions should be followed as a minimum, conditions may require
additional measures.
• To provide dissipation for static charge, wet down surfaces with conductive
fluids and/or apply conductive films or fabrics to the pipe. Keep precautions in
place until procedures are complete.
• Ground all tools.
• Periodically verify that continuity is maintained from ground probe to tool.
Check the squeeze-off tool prior to use to assure it is the correct size; is properly
functioning; and is properly adjusted for the squeeze-off to be done.
Prior To Use
1. Adjust 94317 Flow Control Valve for desired opening rate. (#94317 Valve sold
as an accessory.) Laboratory test found opening the valve slightly less than 1/8
turn yielded a 0.5"/minute retraction rate at 8000 psig. To adjust the flow control
valve, squeeze a sample of the intended PE pipe then time the retraction rate.
Open the valve to increase the retraction rate; close the valve to reduce it.
2. Gas service: connect Reed's #04621 Static Grounding Device.
*Reed strongly recommends use of the PEGR7 Static Grounding Device (#04621) with
PE Squeeze-Off Tools. Use a grounding accessory as a precaution against static build-up.
Dissipate the charge and minimize the possibility of ignition.
Additional information on static electricity is available in the PPI Handbook of Polyethylene
Pipe 2nd Edition.
Squeezing PE pipe
1. Connect pump to cylinder. Verify pump reservoir valve is shut.
2. Insert ground probe into moist soil.
3. Lift and swing bottom bar.
4. Select and position stops based on pipe diameter and SDR.
5. Pump using handle to raise pressure. Pause momentarily to allow stress relaxation in the pipe. Continue pumping until near
10,000 psig or until stops contact bottom bar. Relief valve prevents exceeding 10,000 psig.
6. Use saddle clamps after reaching 9000+ psig. Tighten down on nuts pulling both saddle clamps down.
Releasing PE pipe
1. Loosen saddle clamps and remove.
2. Open pump reservoir valve slightly. Shut valve as necessary to maintain desired retraction rate. Users of the #94317 Flow Control
Valve should open the pump reservoir valve fully (about two turns).
3. Once the retraction slows to well below the maximum rate, tip the tool forward (or backward) so the tool's weight aids retraction.
a. By supporting the bottom bar approximately 2" above the floor of the pit, the tool weight will retract ram and allow swinging the
bottom bar clear of the pipe. Avoid supporting the bottom bar under the Tie Rod Ends, as that prevents the bottom from
clearing the Tie Rod Ends.
b. Vent the pump reservoir if the ram does not stay back or does not return. The pump may have been over-filled.
4. Continue allowing the ram to retract until 2" or so of clearance exists between the pipe and the ram, or until bottom bar
clears the Tie Rod Ends.
5. Tap bottom bar up and swing bar clear of pipe.
6. Remove ground probe and tool.
Maintenance
1. Keep all parts clean and free of dirt that may hinder operation and/or squeezing.
2. Maintain pump and cylinder with a medium grade (AW46) hydraulic fluid as needed.
3. Periodically apply grease to thrust area (grease fitting) to allow continuous smooth operation.
Reed Manufacturing Company
1425 West 8th Street
Erie, PA 16502 USA
PES8H Operating Instructions
Polyethylene Squeeze-Off Tool, Hydraulic 3"- 8" nom. capacity
Flow Control
Valve
Phone: 800-666-3691 or 814-452-3691
Fax: 800-456-1697 or 814-455-1697
www.reedmfgco.com
Cat. No. PES8H
Item Code: #04309
Extra Stop Storage
Grease Fitting
Bottom Bar
#04621
PEGR7 Static
Grounding Device
0615 - 54309