电缆安置和铺设说明翻译-中英对照
在作业期间全部移除板坯必须重建或者替换。
13.2.2 电缆的安置和铺设
通常，电缆的安排和铺设方法必须获得项目经理的批准。
电缆必须按照项目经理的要求直接放置在地面上；带有保护封套；放入管材和线渠导管内，直接铺设在线槽或者在具体电缆沟内，或在支架上，或在托盘或者系索栓上。
路线长度/根据日程表里面的价格，对不同电缆安装费用进行计算。每条电路的3个单芯电缆在扁式材料中必须与中心的任一点有至少200毫米的距离。在安装工作的开始之前，同的电缆电路之间的间距必须获得项目经理的同意，但是不同电缆电路之间的距离不得少于200毫米。
13.2.2.4 在地面上直接铺设电缆
每条包括3个单芯电缆的MV电缆电路，必须按照附件3图纸里的说明进行铺设。
如果在合同里包括有额定功率的要求，承包商提供必要的导管。导管的末端必须突出路牙外1.0米。承包商负责全部相关作业，包括道路表面的破坏和随后的回填，连接和巩固作。
承包商从导管移除任何松散的材料，必须在抽出电缆之前，确定其直径略小于导管的直径。
在抽出电缆之后，导管必须使用批准的化合物进行密封。
在回填之前，不使用任何用木制塞子密封的管材或者导管。全部密封材料和塞子由承包商负责提供。
13.2.2.5 混凝土电缆沟的电缆
在变电站里，必须提供所有混凝土电缆沟和封盖并且获得项目经理的批准。所有混凝土电缆沟里的全部电缆必须采用合适衬片和托座支撑。必须以整洁和有序的方式排列，尽可能避免在电缆沟内的穿行铺设电缆。不同电压的电缆保持独立。
在电缆沟已经挖掘到必要深度之后，深度至少为25mm；将细沙铺设到电缆安置的位置。
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在电缆已经铺设后，必须再覆盖干净的细沙，大约在电缆上方50毫米；细沙必须用手填埋紧密；作业中不允许使用机械进行填埋。
电缆从卷线轴直接铺设到电缆沟中，在抽取和铺设作业期间，在相邻的位置采用特制滚筒作为支架。
当电缆已经铺设完毕后，到所有在电缆沟内的电缆都覆盖完毕，不允许在作业中使用铁锹，丁字斧和栏杆桩。
每个连接处必须采用认可的方式标明电缆编号和连接编号；单芯电缆连接必须标明连接的相位。
13.2.2.6 电缆标识
使用批准的电缆标识对埋设电缆线路进行标示，并竖立在复原作业期间。承包商负责电缆标识的提供和安装。
在电缆安装作业开始之前，建议使用的电缆标识类型和细节，必须由承包商提交并获得项目经理的批准。要求连接处的电缆标识与电缆管道的电缆标识区分开。
标识必须在所有的线渠和连接位置标出；所有路线改变方向的位置和直线线路不得超过30米。
承包商负责提供和安装全部电缆标签；正确地进行编号和定位，并获得项目经理的批准。在电缆沟里的电缆必须使用25毫米的黑体字标明"33千伏电缆"的警告标识。
每个电缆的末端必须有标识/方便确认的标签；位于在电缆终端的合适位置。电缆进入或者离开导管或者管材的地方，必须提供合适的标签。标签，标识或者固定物的材料必须能抗腐蚀，对材料造成腐蚀，保证长期清楚可读。
13.2.2.7 回填和复原
电缆沟的回填作业的开始，必须获得项目经理或者它的监督人员的检查，以及批准电缆和附件的安装。
在电缆埋设并且覆盖之后，承包商在离电缆200毫米的位置，使用经过挑选的 (如有必要)的土壤回填电缆沟；在每个土层压实，如有必要，浇水并且巩固土层。然后承包商仔细的复原铺设的板坯，达到项目经理满意的程度。
每个电缆沟的回填由承包商负责维护，费用由承包商支付，直到能完成上层和表面的永久复原的，分别恢复到的它们的原先的状态，或原先路牙的状况或者完成表面，按两者中较高者计算。
All slabs being removed during performance of the work shall be re-established or replaced.
13.2.2,3 Cable Laying and Routing
In general, the arrangement of the cab!es and methods of the laying shall be subject to the approval of the Project Manager.
Cables shall be laid directly in the ground, with protection covers, drawn into pipes and ducts, laid di¬rectly in troughs or in concrete trenches, or on racks, or supported on trays or cleats as may be re¬quired by the Project Manager.
The route length/run of the different cable installation arrangements are to be measured for payment purposes according to the rates indicated in the schedule of prices. The three single core cables of each circuit shall be laid throughout in flat formation with a minimum of 200 mm between centres at any point. The spacing between different cable circuits shall be decided by the Project Manager prior to commencement of installation work, but at no point shall the distance between different cable cir¬cuits be less than 200 mm.
13.2,2.4 Cables Laid Directly in the Ground
Each MV cable circuit comprising three single-core cables shall be laid as indicated in the drawings in Annex 3.
The Contractor shail provide necessary ducts if required at the rates included in the contract. The ends of the ducts shall protrude to a distance of 1.0 m beyond the curbstones. The Contractor shall be responsible for all work involved, including breaking-up of the road surface and subsequent backfilling, compacting and consolidating of the same.
The Contractor shall remove any loose material from the ducts, and shall prove them by drawing a mandrel of slightly lesser diameter than that of the ducts itself through them, immediately before pull¬ing in the cables.
After pulling in the cables, the ducts shall be seated adequately with an approved compound.
Any pipes or ducts not used shall be sealed by wooden plugs before backfilling. All sealing material and plugs shall be supplied by the Contractor,
13,2.2,5 Cables in Concrete Trenches
Inside the substations, all concrete trenches and covers shall be provided and shall be subject to the approval of the Project Manager. All cables in concrete trenches shall be supported by means of suit¬able spacers and brackets. They shall run in a neat and orderly manner and the crossing of cables within the trench shall be avoided as far as possible. Cables of different voltages shall be kept sepa¬rate.
After the trench has been excavated to the necessary depth, a minimum of 25 mrn dean, fine sand shall be placed to form a bed for the cables.
After the cables have been laid, they shall be covered with additional ciean, fine sand, over and around the cables to a level of 50 mm above the top of the uppermost cable. The sand shall be tamped by hand for satisfactory compaction; mechanical tampers shall not be used for this work.
Cables shall be laid directly from the drums into the trenches and special rollers placed at close inter¬vals shall be employed for supporting the cables during pulling and laying works.
After the cables have been Said and until all the cables in the trench have been covered with their pro¬tection covers, no sharp tools such as spades, pick-axes or fencing stakes shall be used in the trench.
Each joint shall be clearly labelled in an approved manner to indicate the cable number and the joint number; single-core cable joints shall be marked to identify the phase of each joint.
13.2.2.6 Cable
Cable markers of an approved type shall be provided along the route of buried cables and shall be erected as reinstatement is being carried out. The markers shall be supplied and installed by the Con¬tractor.
The types and details of the markers proposed to be used shall be submitted by the Contractor for the Project Manager's approval before cable installation work commences. The joint markers shall-differ from the markers for the cable routes.
Markers shall be installed at al! duct and joint positions; all places where the route changes direction and on straight routes at distances not exceeding 30 m.
The Contractor shall supply and install all labels for the cables, properly numbered and located and subject to the approval of the Project Manager. The cables shall be protected in the trench by yellow warning tapes marked "33 kV cable" in 25 mm high black letters.
Each end of a cable run shall be provided with markers/labels for identification, fitted in a suitable posi¬tion under the cable terminals. Where cables enter or leave ducts or pipes, suitable identification markers shall be fitted. The materials of the markers and of the labels and fastenings shall be such as to avoid corrosion, due to incompatibility of materials and to ensure permanent legibility.
13.2.2,7 Backfilling and Reinstatement
Back-filling of trenches shall not commence until the Project Manager or his Supervision staff has in¬spected and approved the cables and accessories installed.
After the cables are laid and covered, the Contractor shall backfill the trench with selected (and if nec¬essary sieved) soil in 200 mm layers, the earth in each layer being well compacted, watered if neces¬sary and consolidated. The Contractor shall then carefully reinstate the paving slabs, all to the satis¬faction of the Project Manager.
Each refilled trench shall be maintained in a safe condition by the Contractor at his expense until such time as he can carry out permanent reinstatement of the upper levels and surface so as to restore these to their original condition or to the level of the surrounding curbstones, or finished surface, re¬spectively, whichever is higher.
2013.3.15