仪表防爆及接地系统施工方案中英Word格式.docx

1、2.3现行的电气装置安装工程施工及验收规范。2.4现行自动化仪表工程质量检验评定标准。2.5厂商提供的产品安装使用说明书等技术文件。2.6公司质量保证手册、质量体系子程序及其支撑性文件。3.工程概况 工程概况应包括：工程名称、地点、规模、特点、范围、主要技术参数、主要实物工程量、工期要求及投资等。4.防爆施工：Explosion-proof Construction:4.1一般规定： General Regulations:4.1.1爆炸和火灾危险区域使用的电气、仪表设备的防爆形式及配线方式必须符合设计要求，并满足使用区域的防爆等级规定。 The style of explosion-proo

2、f and wiring for electric equipment and instrument equipment, which used in explosion and fire dangerous areas, must accord with the design requirement and content with explosion proof class stipulation.4.1.2安装在爆炸和火灾危险区域的仪表、电气设备和材料，必须具有符合现行国家或行业标准中规定的防爆质量技术鉴定文件和防爆产品出厂合格证书。设备、材料的外观应无损伤和裂纹。 Concerning

3、 electric and instrumental equipment and material that is installed in explosion and fire dangerous area, their explosion-proof quality technique appraisal document and explosion-proof manufacture certificate must be compliance with the new standard requirement of country or vocation. There arent da

4、mage and crack in appearance of device and material.4.1.3在爆炸和火灾危险场所使用的防爆电气、仪表设备，应有铭牌和防爆标志，并在铭牌上标明国家授权的部门所发给的防爆合格证编号。For the explosion-proof electric and instrumental equipment that is used in explosion and fire dangerous area, the nameplate and explosion-proof mark should appear on the equipment, th

5、e number of explosion-proof certificate issued by the department of national accreditation should be provided on nameplate. 4.1.4在爆炸和火灾危险场所安装的正压通风的仪表盘（箱）、接线箱及电气、仪表设备、除本质安全型外，应有“电源未切断不得打开”的标志。 The plus pressure ventilation instrument panel （box）, junction box, electric equipment and instrument equipm

6、ent installed in explosive and fire dangerous area, except the intrinsically safe type, it should has “Do not open when energized” notice.4.1.5仪表电气线路采用的电缆沟、汇线槽、保护管和仪表连接管路在穿越不同防爆等级的爆炸和火灾区域的分隔间壁时，在分隔间壁外，必须做充填密封。 For trench, cable tray, protection pipe used for instrument electric circuit and instrumen

7、t connection piping, if they cross the separated room in different explosion-proof class explosion and fire area, filling and sealing should be done outside the separated room.4.2设备安装 Erecting Equipment:4.2.1采用正压通风防爆的仪表盘（箱），接线箱，安装后应保证箱内压力维持在不低于设计规定的压力值，当有低压力时,其联锁或报井装置动作应准确、可靠。 For the explosion-proo

8、f instrument panel （box）, junction box with plus pressure ventilation, after they are installed, the pressure in box should be ensured no lower than the design pressure. the interlock and alarm unit should act correctly and reliably when the pressure is low.4.2.2采用正压通风防爆的仪表盘（箱）、接线箱，其正压力通风管路必须保持畅通，且不

9、宜安装切断阀。 The explosion-proof instrument panel （box）, junction box adopting plus pressure airiness, its plus pressure airiness piping must remain accessible and should not mount shutting off value.4.2.3在爆炸和火灾危险场所安装的仪表箱、分线箱、接线盒及防爆仪表、电气设备引入电缆时，应采用防爆密封填料进行密封；多根电缆穿一根管时，可用密封盒并用适当填充料密封。外壳上多余的孔应做防爆密封。 For th

10、e instrument box, junction box, wiring box ，explosion-proof instrument and electric equipment which installed in explosion and fire dangerous areas, the entrance of cable should be sealed with explosion-proof seal filling. When one conduit contains multiple cable, the entrance can mount sealing box

11、with propriety filling. Do explosion-proof sealing to spare holes in shell.4.2.4防爆仪表箱、分线箱、接线箱的门（盖）应有弹性密封垫圈，或隔防密封面连接螺栓应均匀紧密，并应有弹簧垫。Covers should have spring sealing washer for explosion-proof instrument box, junction box, and connection box. And connection bolts and nuts of separating and preventing

12、face shall be tight equably and have spring washer.4.2.5防爆电气、仪表设备的安装应牢固，内部接线必须正确、牢固，并有防松和防拔脱装置。The explosion-proof electric and instrument devices shall be installed firmly. Inside wiring must be correct and firm with looseness-proof and shedding-proof unit.3电气线路安装Erecting Electrical cable line:4.3.

13、1穿越不同等级的爆炸和火灾危险区域分隔间壁的电缆沟的密封措施：Sealing way for trench that crosses separated walls belonging to different class of explosion and fire dangerous areas:a.电缆沟内充砂密封，可敷设一层电缆，充填一层砂，砂层厚约100mm。电缆全部敷设完后，充砂填满电缆沟。 Method of filling fine sand into trench: filling one-layer sand about 100mm depth after install o

14、ne layer cable. The trench shall be full of sand after all cable layout.b.在分界处两侧安装隔板，隔板之间充砂，长度不少于1m。The separated boards should be fixed at both sides of interface, zone between boards shall be filled with sand, and the length is no less than 1m.c.在分界处用阻火密封填料充填。Sealing with fire-resistant filling at

15、 the interfaces.4.3.2汇线槽穿越不同级别的爆炸，火灾危险区域分界处时，可采取的密封措施：Taking airproof measures where cable tray passes through the interface of different class explosion and fire dangerous areas:a.在分界处作气密砂封。 Carry out seal with sand at the interface.b.在分界处用阻火密封填料充填，形成密封阻挡层。 Seal with fire-resistant seal filling at

16、the interface and form sealing and resistant layer.4.3.3敷设在爆炸和火灾危险区域内的电缆（线）保护管应选用厚壁镀锌管。选用的管件应按危险区域的级别采用合适的防爆结构形式。Choose thick-wall galvanized conduit as cable protective conduit laid in explosion and fire dangerous areas. Selected pipe pieces should adopt proper explosion-proof structure and type ac

17、cording to requirements of the dangerous areas class.4.3.4保护管与设备或管件之间的连接应采用圆柱管螺纹连接，螺纹有效啮合部分应在6螺距以上，与设备连接应用锁紧螺母锁紧。螺纹上应涂电力复合脂或导电性防锈脂。不得在螺纹上缠麻涂铅油、缠绝缘胶带或涂其它油漆。Adopt cylindrical gas thread to connect conduit and devices or pipe-pieces. Make sure that effective engagement is more than six pitches and lock

18、 tightly equipments with locknut. The thread shall be painted with electric poly-grease or conductive antirust grease. Not wring hemp ropes, not wring insulated tape and not paint lead oil or other painting.4.3.5仪表电气线路，在防爆区内不应有中间接头，当必须有中间接头时，应在防爆接线箱内进行，且应连接牢固、紧密，接头良好并有防松和防拔脱装置。Instrument electrical

19、circuit shall not have middle joint in explosion-proof area. If it is obligatory, joint shall be in the explosion junction box, keep connection hard and tight, have all right electrical conductivity with looseness-proof and shedding-proof unit.4.3.6线路沿工艺管架敷设时，其位置应在爆炸和火灾危险性小的一侧When lay line along the

20、 process pipe stanchion, layout location should be at the side that possibility of explosion and fire is little. 当工艺管线内爆炸和火灾危险介质的密度大于空气时，应在工艺管道的上方，反之，应在其下方。When density of explosion and fire dangerous medium in the process pipe is heavier than that of air, its layout location should be above the pro

21、cess pipe; on the contrary, its layout location shall be below.4.3.7保护管与现场仪表设备连接时，应安装隔爆密封管件并做充填密封，密封管件与仪表设备之间的距离不应大于0.45m。密封管件与仪表之间的连接可采用挠性连接管，并按防爆要求书进行装配。挠性连接管的材质应与使用环境条件相符适合。When connect protection pipe with instrument equipment at site, the explosion-proof and airtight pipe connectors shall be in

22、stalled, filled and sealed. Make sure that the distance between airproof pipe connectors and instrument equipment is no more than 0.45m. The flexible pipe can be used to connect airtight pieces and instrument and mount according to explosion-proof instruction book. At meantime, flexible material sha

23、ll agree with application condition.4.4本安系统施工：Construction of Intrinsically Safe System:4.4.1本质安全线路及其附件，应具有耐久性兰色标记。The intrinsically safe line and accessories shall be marked with blue wear mark.4.4.2本质安全线路与非本质安全线路之间应加屏蔽，且保持一定的距离。 Add shield net to separate the intrinsically safe circuit from the no

24、n-intrinsically safe circuit and keep some distance between them.4.4.3本质安全线路中的安全栅、隔离器等关联设备的安装位置，应在安全场所一侧，或置于另一与环境相适应的防爆设备外壳内。需接地的关联设备，应可靠接地。 Safe bars, separators and other related equipments in the intrinsically safe line shall be erected at the side of safe location or into explosion-proof device

25、shell that accords with conditions. Equipments needed earthing shall be reliably grounded.4.4.4不同系列的本质安全型仪表及本质安全线路的关联设备，必须有国家授权的部门发给的产品生产许可证和防爆合格证，其型号规格的替代，必须经原设计单位以文件形式确认。For related devices of various series intrinsically safe instruments and lines, their manufactures license and explosionproof ce

26、rtificate, approved by national authority department, must be provided. If want to replace them, their specifications and types must be approved by primary design unit in form of files.5.接地系统施工：Construction for Earthing System:5.1一般规定：General Regulations:5.1.1仪表接地系统一般分为保护接地、信号回路接地、屏蔽接地和本安系统接地四种。 Ins

27、trument earthing system generally comprises of four types: safeguard earthing, signal loop earthing, shield earthing and intrinsically safe earthing 5.1.2仪表系统的各种接地应各成系统，互相分开，各自接地母线，接地干线，分支线之间应彼此绝缘。 All earthlings of instrument system should have its own system, every earthling system shall separate

28、and connect to its own earthing bus. Bus and branch-line should be insulated each other.5.1.3仪表接地系统的接地电阻值，应分别符合各自系统的厂商技术文件或设计文件的要求。 Earthing resistance of instrument earthing system should be compliance with requirements of manufactures technical files or design files for respective instrument syste

29、m.5.1.4当有防干扰需求时，多芯电缆中的备用芯线应在一点接地。屏蔽电缆的备用芯线与电缆屏蔽层，应在同一侧接地。 When it is needed to prevent disturbance, spare cores of multi-core cable should be grounded at one point. Spare cores of shielded cable and its shield should be grounded at the same side.5.1.5接地线的颜色应符合设计规定，并设置黄/绿标志。 Color of earthing wire sh

30、ould conform to design regulations and set yellow- green sign.5.1.6接地系统的连线应使用铜芯绝缘电缆或电线，采用铜质螺栓紧固。仪表盘（箱）、柜内的接地汇流排，应使用铜材，并由绝缘支架固定。接地总干线与接地体之间应采用焊接。 Connection line for earthing system should apply with copper-core insulated cable or wire and fasten on copper bolt and nut. Earthing bus bar inside instru

31、ment panel （box） or cabinet shall be made of copper and be fixed by insulated support. Apply welding between earthing mainline and earthing pole.5.1.7自己制作接地汇流排时，连接螺栓与汇流排之间的连接宜采用在汇流排上攻丝的方式连接。 When fabricate earthing busbar by ourselves, connect bolt with bus bar by tapping thread.5.2保护接地Safeguard Earthing:5.2.1用电仪表的外壳，仪表盘、柜、箱、盒和电缆槽，保护管、支架底座等正常不带电的金属部分，由于绝缘破坏而有可能带危险电压者，均应做保护接地。供电电压低于或等于24V的就地仪表、开关等，设计无特殊要求时，可不做保护接地。 All not electriferous me