地下grp管道施工方案-展示頁
2025-05-07 01:44本頁面
【正文】 the product is stored under tarpaulins or (white) polyethylene sheeting.● Pipe stacks should have side supports or blocks to prevent rolling or slipping of the stack during stormy weather. A leveled, soft earth surface free of rocks and other hard or sharp objects is remended.9. Arrange Pipe in TrenchPrepare and assemble pipe and joints in accordance with the ISO drawing, using special care to keep joint surface clean and dry.Position pipe on timbers across ditch as shown in figure1. Block into position to hold alignment and prevent lateral movement.Joint the pipe sufficiently in advance of the pipe lowering operation so that no movement of the pipe will take place at location where joints are being cured. Any vibration or movement of uncured or partially cured joints will increase the risk of joint failures.Should be make sure the depth of the trench before lowing the pipe. Figure1With power equipment or manpower, raise the pipe slightly to slide the timber support from under the pipe. Lower the pipe into the trench. Do not drop or lower suddenly. Repeat the above operation at each support. Use rope or webbed sling for lifting pipe. If manpower is used, it is suggested that two men be used for lifting 6inch pipe, and four men and much more be used for the 8inch and bigger pipe.10. Joint lamination Procedure CuttingThis initial step shall be applicable only if a pipe end needs to be cut and replaced, or a pipe length requires field adjustment. Mark the pipe section to be cut using a wraparound and a white marker.Cut the pipe using a hacksaw or a diamond cutting disc, make sure that a proper square cut has been made. Ensure that cut ends remain within the tolerances as show in table .Table : Maximum tolerance on square of cutted pipe endPipe Size RangeTolerance(mm)(mm)(inch)2510014150400616 GrindingGrinding and cleanning the total external surface. Make sure that the pipe ends are grinded as well as the required length as attachment C: Field lamination process sheet.Start the lamination of the fitted sections within two hours after sanding。 Wrap Joint Procedure Page 4 to 5.The location of resin, WFluid, catalyst amp。 Wrap Joint Procedure For GRP/FRP PipingInstallation and Handling Instructions For Rigid Joint PipeField Lamination Process sheet4. Responsibilities GRP ManagerIn charge of all the activity during the GRP pipe construction. Mainly involve the safety, technique and quality problems during the construction, preparing and carrying out the construction schedules. QC SupervisorIn charge of skill training for all the personnel who will engage the GRP piping work, analyzing the safety issues and providing precautions. Applying for work permits QC InspectorCompiling QC precautions, solving the QC issues during GRP piping construction, taking part in quality inspection and acceptance and taking the major responsibilities for the quality of the GRP piping.5. Equipments and ToolsThe below items are used for the GRP Piping handling and Construction:? Boom trucks, trailers and cranes, shackles, slings belts, supports, crosstie for piping transportation? Angle grinder, diamond blades, die grinder and flap wheels for cutting and grinding? Square basin, paint rollers, brushes and Steel grooved rollers for lamination? Hot air drye
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