仪表防爆及接地系统施工方案(中英)
仪表线路施工方案(中英)
仪表线路施工方案1、编制说明及依据1.1、编制说明1.1.1、仪表线路施工是仪表施工中重要施工程序之一。
为了保证施工质量和施工控制点按期到达，特编此方案。
1.1.2、此方案仅为非防爆场所仪表线路施工方案，防爆场所施工方案见电气防爆接地篇。
1.2、编制依据1.2.1、承包合同或协议。
1.2.2、施工图及其它设计文件。
1.2.3、产品安装使用说明书。
1.2.4、现行《自动化仪表工程施工及验收规范》。
1.2.5、现行《电气装置安装工程电缆线路施工及验收规范》。
1.2.6、现行《电气装置安装工程盘、柜及二次回路结线施工及验收规范》。
1.2.7、现行《自动化仪表安装工程质量检验评定标准》。
２、工程概况2.1、工程名称、范围、地点、规模、特点、主要技术要求、工期要求等。
2.2、主要实物工程量：主要实物工程量表3、施工程序和施工方法3.1、施工程序3.2、施工方法：Construction Methodology:3.2.1、设备、材料出库3.2.1.1、施工前应根据施工图、设材表认真核对设备、材料的规格、型号、材质、数量、附件应符合设计要求，外观完整无缺，材质证、合格证等产品文件应齐全。
合格产品做好记录并妥善保管，不合格产品应做标识，隔离存放，统一退库。
3.2.1.2、电缆（线）敷设前应做好外观及导通检查，并用500V兆欧表测量绝缘电阻，其电阻值不应小于5MΩ，当有特殊要求时，应符合其规定。
3.2.2、支架制作安装3.2.2、Supports Fabrication and Installation:3.2.2.1、制作支架时应将材料矫正、平直，切口处不应有卷边和毛剌，制作好的支架应牢固、平正、尺寸准确。
3.2.2.1、Materials used for supports and brackets shall be rectified and smooth without scales and burrs. Fabricated supports and brackets shall be secure, straight and precisely measured.3.2.2.2制作好的支架应把焊渣除净，并做除锈、防腐处理，支架刷漆应均匀完整。
仪表及控制系统接地方案
仪表及控制系统接地方案仪表及控制系统接地设计随着电子式仪表，特别是电动三型仪表和分散控制系统（DCS）的应用，仪表系统的接地已经成为仪表工程设计的一个组成部分。
仪表及控制系统的可靠性直接影响到生产装置安全、稳定的运行，系统的抗干扰能力是关系到整个系统可靠运行的关键。
特别是采用分散控制系统，若不考虑和处理好现场电磁干扰和兼容问题，一方面要求生产制造单位提高系统抗干扰能力；另一方面，要求工程设计、安装施工和使用维护单位引起高度重视。
第一节抗干扰措施干扰的形成是因为有干扰源的存在。
干扰源有内部和外部的，仪表内部的干扰是由于电子线路的热效应和散粒效应所造成的，内部噪声的拟制是仪表电子线路设计者研究解决的问题。
仪表使用者关心的是外部噪声，外部噪声有自然界和人为噪声，自然界噪声是闪电等放电现象所形成，认为噪声由无线电波、大功率输电线、产生电火花的设备、电感性负载等所产生。
一、干扰源及其对系统的干扰机制1、来自空间的辐射干扰，2、来自信号线引入的干扰；3、来自接地系统混乱时的干扰；4、来自计算机内部的干扰；5、仪表供电线路引入干扰。
二、抗干扰措施1、隔离；2、屏蔽；3、绞线；4、对电源引入干扰的拟制；5、雷击保护第二节典型数字控制系统抗干扰要求及工程设计一、抗干扰要求1、采用性能优良的隔离电源，拟制电网引入的干扰；2、正确选择接地点，完善接地系统：1）、全系统采用统一的接地网；2）信号屏蔽层的接地必须保证单点接地；3）合理选择和敷设信号电缆；4）硬件滤波；5）软件抗干扰措施。
二、工业计算机系统工程化应用的抗干扰设计工业计算机系统的抗干扰是一个系统工程，要求制造单位设计生产出具有较强抗干扰能力的产品，且有赖于使用部门在工程设计、安装施工和运行维护中予以全面考虑，并结合具体情况进行综合设计，才能保证系统的电磁兼容和运行可靠。
在进行具体工程的抗干扰设计时，应注意以下两方面：1）、设备选型；2）综合抗干扰设计。
工业计算机系统工程化应用的电磁兼容性设计是一个系统工程，必须全面综合考虑，并在各个环节上予以高度重视。
防雷、接地施工方案(中英)
防雷、接地施工方案Construction scheme for lightning and grounding1编制说明防雷、接地工程是电气施工中重要施工工序之一，它对保证系统的工作稳定，以及设备和人员的安全都具有重要作用，因此为保证该工序的施工质量，促进施工技术进步，确保工用按时完工，特制定此方案。
2、编制依据工程承包合同、协议。
设计施工图和其它设计文件（变更单等）。
国家现行《电气装置安装工程，接地施工及验收规范》GB50169－92。
国家现行《电气装置安装工程爆炸和火灾危险环境电气装置施工及验收规范》GB50257-96。
国家现行《建筑电气安装工程质量检验评定标准》GBJ303－88。
国家、行业和地区有关安全、防火等方面的法律、法规和规定。
公司《质量保证手册》、《质量体系程序》及其支撑性文件。
3、工程概况说明工程名称、地点、规模、特点、主要技术要求、工期要求等。
5、施工方法与技术要求5.Construction method and technical requirement1). 材料出库施工前应根据施工图材料表认真核对材料的规格、型号、材质、数量等应符合设计要求，外观完好，材质证、合格证等产品文件应齐全。
合格产品做好记录并妥善保管。
不合格产品应做标识，隔离存放统一退库。
1).Delivering material to siteCheck material carefully according to material table of construction drawing before starting work to ensure its specification type ,quantity and etc. Correspond with designer’s requirement ,visual condition is O.K, Certificates are available..Records shall be taken for qualified products and well kept ,non-qualified products shall be marked and kept separately and devoured back to storehouse concertratatively.2). 接地沟开挖按照施工图在现场放线，应做到横平竖直、避免弯曲，接地沟深度应严格按设计要求，若设计没有具体要求，则按-0.8m开挖，宽度应考虑到安装接地极，敷设接地线能方便施工为准。
防爆仪表安装施工方案
防爆仪表安装施工方案1. 引言防爆仪表在化工、石油、天然气等危险场所中使用，主要用于监测和控制各种参数。
为了确保工作场所的安全，在安装防爆仪表时需要按照相关标准和规定进行施工。
本文档详细描述了防爆仪表的安装施工方案以及需要注意的事项。
2. 安装施工前的准备工作在进行防爆仪表的安装施工前，需要进行以下准备工作：•确定安装位置：根据系统要求和实际情况，确定防爆仪表的安装位置，并进行标记。
•准备材料和工具：根据防爆仪表的型号和规格，准备所需的安装材料和工具。
•安装环境准备：确保安装环境符合相关安全要求，如通风良好、无易燃易爆物质等。
•了解相关安全规定：熟悉防爆仪表的使用说明书和相关安全规定，确保施工符合规范。
3. 安装施工步骤3.1 安装支架安装支架是防爆仪表安装的基础，需要进行以下步骤：1.使用水平仪检查安装位置的水平度，确保支架安装平稳。
2.将支架固定在安装位置上，使用螺栓和螺母进行安装，紧固程度适中。
3.检查支架的稳定性，确保能够承受防爆仪表的重量。
3.2 连接管路根据系统要求，将防爆仪表与管路连接，需要进行以下步骤：1.根据防爆仪表的接口尺寸，选择合适的管道和接头进行连接。
确保接头和管道的密封性。
2.使用扳手和扳手套筒等工具，将接头固定在防爆仪表和管路上。
紧固程度适中，不得过紧或过松。
3.进行螺纹密封处理，使用PTFE密封带或密封膏涂抹在接头螺纹上，以确保连接的密封性。
3.3 连接电缆防爆仪表通常需要与电源进行连接，需要进行以下步骤：1.将防爆仪表的电缆插头与电源插座进行连接，确保插头和插座的型号和规格匹配。
2.使用绝缘胶布将电缆接头进行绝缘处理，确保电缆接头的绝缘性能。
3.将电缆沿着支架或固定管道进行固定，避免电缆松动或扭曲。
3.4 调试和测试安装完防爆仪表之后，需要进行调试和测试，确保仪表正常工作。
进行以下步骤：1.根据仪表的使用说明书，进行相应的调试和设置，确保仪表参数正确配置。
2.使用相关测试仪器或系统，对防爆仪表进行功能测试和性能验证，确保仪表工作正常。
仪表工程施工方案.中英文版(第四版)
Plant: PP+HDPE Contractor: TISA REV: DClient: CSPC Subcontractor:CP6CC Page 1 of 77目录Table of Content1概述General2工序划分Process partitioning3施工准备Construction preparation4仪表单体校验Instrumentation single verification5电缆桥架安装Installation of cable tray6机柜的安装Installation of cabinet7电缆敷设和接线Cable pulling and wiring8撬块仪表及控制系统安装installation of packaged instrument & control system9现场仪表安装Site instrumentation installation10仪表回路校验Instrumentation loop verification11单机试运Single commissioning12质量和安全保证措施Quality & safety guarantee measures13施工人员计划Schedule for construction personnel14主要校验设备，施工机具及手段用料Main verified equipment, construction tools & materials15修订注释RevisionPlant: PP+HDPE Contractor: TISA REV: DClient: CSPC Subcontractor:CP6CC Page 2 of 771 概述General1.1 80万吨/南海石油化工有限公司聚乙烯聚丙烯工程的仪表控制系统由DCS系统、自动紧急停车联锁保护系统（IPS）、压缩机组控制系统、总线仪表（Fieldbus Foundation）系统以及现场仪表组成，还设有可燃气体综合显示报警柜；机组监测控制及调速系统经通讯方式接至DCS系统；装置运行过程参数的所有操作都可在DCS上实现。
仪表施工方案范本
仪表施工方案范本仪表施工方案范本：一、项目背景根据项目需求，我们将进行仪表施工工程。
此项目旨在安装和配置仪表设备，确保其正常运行和数据采集。
二、施工目标1. 安装仪表设备，包括传感器、仪表和控制器等。
2. 确保仪表设备的连接正确，能够正常运行并采集数据。
3. 对仪表设备进行配置，以满足项目需求。
4. 进行仪表设备的调试和测试，确保其工作稳定和准确性。
三、施工步骤1. 准备工作：- 确定施工地点，清理施工区域，确保安全无障碍。
- 提前准备所需的仪表设备和工具。
- 熟悉项目需求和相关图纸，确保施工过程顺利进行。
2. 安装仪表设备：- 根据项目需求和图纸要求，进行仪表设备的安装。
- 确保设备连接正确，连接所需的电气线路、信号线路等。
- 注意安装的准确性和稳定性，避免仪表设备的损坏和故障。
3. 配置仪表设备：- 按照设备说明书和项目需求，进行仪表设备的配置。
- 配置设备的参数、通信方式等，确保其正常工作和数据采集。
- 进行设备的校准和调整，以达到项目要求的精度和准确性。
4. 调试和测试：- 对安装和配置的仪表设备进行调试和测试。
- 检查设备的工作状态和采集数据的准确性。
- 如发现问题，及时解决并进行修复，确保设备能够正常工作。
5. 完工验收：- 完成施工工作后，进行验收和测试。
- 检查仪表设备的安装质量和工作状态。
- 根据项目需求和验收标准，判定施工工程是否合格。
四、安全措施1. 在施工过程中，严格遵守安全操作规程和操作规范。
2. 充分了解和掌握所使用的仪表设备的安全使用方法。
3. 注意电气安全，确保设备的接地和绝缘。
4. 注意施工现场的整洁和安全，防止杂物和障碍物造成安全风险。
五、质量控制1. 确保施工工程符合项目需求和设计要求。
2. 严格按照相关标准和规范进行施工。
3. 在施工过程中，确保设备的安装准确性和稳定性。
4. 进行仪表设备的校准和调整，以确保其工作精度和准确性。
六、项目管理1. 按照项目进度计划，合理安排施工工作。
仪表施工方案及安全措施
环境安全
施工现场的消防安全措施 施工现场的电气安全措施 施工现场的机械设备安全措施 施工现场的环境保护措施
应急预案
制定应急预案的 目的和原则
应急组织与职责 分工
应急资源储备与 调配
应急响应程序与 处置措施
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汇报时间：20XX/01/01
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培训与教育：对施工人员进行安 全培训，提高安全意识，掌握安 全操作规程
应急预案：制定应急预案，配备 应急救援人员和设备，确保在发 生事故时能够及时处理
设备安全
设备安装：确保设备安装稳固，防止意外滑落或倾倒 设备维护：定期对设备进行维护保养，确保设备正常运行 设备操作：对操作人员进行培训，确保其熟悉设备的操作规程和注意事项 设备检查：定期对设备进行检查，及时发现并处理设备存在的安全隐患
基础制作：根据仪表尺寸和要求制作基 础结构
验收与交付：验收合格后，将仪表交 付给用户使用
施工要点
施工前准备：检 查仪表设备、工 具和材料是否齐 全
施工顺序：按照 先测量后施工的 原则，确保施工 精度
施工安全：采取 必要的安全措施 ，确保施工人员 的安全
质量检测：施工 完成后进行质量 检测，确保施工 质量符合要求
作业环境：对施 工现场进行清理， 确保作业环境安 全、整洁
技术交底：进行 详细的技术交底， 明确施工要求和 质量标准
施工流程
施工准备：检查仪表设备、工具和材料 是否齐全
仪表安装：将仪表固定在基础结构上， 连接管路和电缆等
安装位置确定：根据图纸和现场情况 确定仪表安装位置
调试与校准：对仪表进行调试和校准， 确保其正常工作
仪表施工方案EnglishandChineseVersion
---------------------考试---------------------------学资学习网---------------------押题------------------------------越南安化制浆厂仪表instrument of An Hoa pulp & paper mill in Vietnam施工方案Construction Programme2009年11月27日th, 2009 November.27编制：Edited by:审核：Audited by:审批：Approved by:一、工程概述一. Project Summary本方案仅适用于仪表安装施工，主要包括仪表盘（操作台）、DCS/PLC控制柜、就地监测仪表、执行元件、电缆桥架、电缆线路等装置的安装，是作业指导性文件。
未尽事宜或施工中有特殊要求，须遵照国家标准规范或设计要求及有关部门的规定执行。
This program is an operational guidance document only for the construction of instrument installation, mainly including the installation of instrumentpanels (consoles), DCS / PLC control cabinets, in situ monitoring instruments,power elements, cable trays, and cable lines. Unaccomplished matters or otherspecial requirements in construction must comply with the national standardsand specifications or design requirements and the provisions of the relevantdepartments.1 编制依据1 the basis of compilation1.1 施工合同。
现场仪表设备安装、防护方案(中ying)
现场仪表设备安装、防护方案INSTALLATION AND PROTECTION OF FIELD INSTRUMENT EQUIPMENTS1、编制说明现场仪表设备在石油、化工、电力、制药、冶金等行业应用广泛，其特点是随工艺流程布局分散，而且易损易失精密元器件较多。
随着现代科技的进步，仪表设备产品向多样化、智能化方向发展，安装方式更趋灵活，对施工现场设备防护也提出了更高要求。
为了提高施工现场仪表设备安装、防护质量，向业主提供优良工程产品，履行我公司的质量承诺，特编制本方案。
2、编制依据2.1、工程承包合同或协议。
2.2、仪表设计施工图及其它设计文件。
2.3、施工组织设计。
2.4、国家现行的《自动化仪表施工及验收规范》。
2.5、国家现行的《自动化仪表质量检验评定标准》。
2.6、我公司《质量体系程序》——《防护程序》CX/HJ15.02-98。
2.7、仪表设备制造厂提供的技术文件。
3、工程概况3.1、概述工程名称、范围、地点、规模、特点、仪表回路、仪表设备台件、工期要求及投资等。
3.2、主要实物工程量：主要实物工程量表4.1、一般规定：GENERAL NOTES4.1.1、仪表安装前应按设计位号核对其型号、规格及材质。
其外观应完好无损，附件齐全。
Check instrument type, size and material first. Ensure undamaged and pretty.4.1.2、仪表安装前应进行单体试验和校准。
设计要求脱脂的仪表应在脱脂检验合格后安装。
Single adjusted should be took before installation, the instrument to be Degreased shall be installed after accepted.4.1.3、现场仪表安装时，其位置不得影响工艺操作。
显示仪表应安装在便于观察、维修的位置（仪表中心距地面高度宜为1.2~1.5米）。
仪表安装施工方案(OK)
仪表安装施工方案
一、前言
本文主要介绍在工业领域中仪表安装的施工方案，旨在提高安装效率与质量，确保仪表的正常运行与使用。
二、准备工作
在进行仪表安装前，需要进行以下准备工作：
1.确认仪表的型号与规格，了解其安装要求；
2.准备所需的工具和仪器，包括螺丝刀、扳手、水平仪等；
3.安排好工作人员，保证人员技术能力与安全意识；
4.制定安全操作规程，确保施工过程安全。
三、安装步骤
1. 确定安装位置
根据仪表的使用要求，选择合适的安装位置，确保仪表能够准确读取数据。
2. 连接电路
根据仪表的接线图和电气布置图，正确连接电路，确保电气连接正确无误。
3. 固定安装
使用螺丝、螺母等工具，将仪表牢固地安装在设备或墙壁上，确保安装稳固。
4. 调试测试
安装完成后，进行仪表的调试测试，确保仪表能够准确读取数据。
四、注意事项
1.在安装过程中，严禁使用损坏的仪表进行安装，以免造成安全事故；
2.安装过程中，应注意保护仪表的外壳，避免划伤或损坏；
3.安装完成后，应将多余的零件及时清理干净，确保施工现场整洁；
4.在安装过程中，严格遵守相关安全规定，确保施工人员的人身安全。
五、总结
仪表的安装施工是工业生产中重要的环节，合理的施工方案能够提高安装效率与质量，确保仪表的正常使用。
通过本文的介绍，相信读者能够更好地了解仪表安装的施工步骤与注意事项，为实际工作提供参考与指导。
仪表防爆和接地安装(MTBE)
置检查记录SYG03-G004单项工程名称10万吨/年MTBE装置单项工程编号1415GJ91单位工程名称装置区仪表安装工程单位工程编号1415GJ91-11名称仪表防爆和接地安装施工图号LE13072-K-5-14～15序号检查项目与要求检查结果检查日期备注1 安装在爆炸危险环境的仪表、仪表线路、电气设备及材料，其规格型号必须符合设计文件规定符合设计文件规定2015.10.062 防爆仪表和电气设备引入电缆时，应采用防爆密封圈挤紧或用密封填料进行封固，外壳上多余的孔应做防爆密封，弹性密封圈的一个孔应密封一根电缆符合设计文件规定2015.10.063 电缆导管与仪表、检测元件、电气设备、接线箱连接时，或进入仪表盘、柜、箱时，应安装防爆密封管件，并应充填密封符合设计文件规定2015.10.064 对爆炸危险区域的线路连接，必须在防爆接线箱内接线。
接线必须牢固可靠，接地良好，并应加设防松和防拔脱装置符合设计文件规定2015.10.065 对于供电电压高于36V的现场仪表的外壳、仪表盘、柜、箱、支架、底座等正常不带电的金属部分，均应做保护接地符合设计文件规定2015.10.066 仪表及控制系统的接地系统的连接方式和接地电阻值应符合设计文件的规定符合设计文件规定2015.10.067 仪表回路应只有一个信号回路接地点, 信号回路的接地点应在显示仪表侧符合设计文件规定2015.10.068 接地线的标示颜色应采用绿、黄两色或绿色符合设计文件规定2015.10.06以下空白结论：监理单位总承包单位施工单位监理工程师：年月日专业工程师：年月日检查人：专业工程师：年月日置检查记录SYG03-G004单项工程名称10万吨/年MTBE装置单项工程编号1415GJ91单位工程名称装置区仪表安装工程单位工程编号1415GJ91-11名称仪表防爆和接地安装施工图号LE13072-K-5-9～13序号检查项目与要求检查结果检查日期备注1 安装在爆炸危险环境的仪表、仪表线路、电气设备及材料，其规格型号必须符合设计文件规定符合设计文件规定2015.10.092 防爆仪表和电气设备引入电缆时，应采用防爆密封圈挤紧或用密封填料进行封固，外壳上多余的孔应做防爆密封，弹性密封圈的一个孔应密封一根电缆符合设计文件规定2015.10.093 电缆导管与仪表、检测元件、电气设备、接线箱连接时，或进入仪表盘、柜、箱时，应安装防爆密封管件，并应充填密封符合设计文件规定2015.10.094 对爆炸危险区域的线路连接，必须在防爆接线箱内接线。
仪表防爆和接地的相关知识及应用
仪表防爆和接地的相关知识及应用下载温馨提示:该文档是我店铺精心编制而成，希望大家下载以后，能够帮助大家解决实际的问题。
文档下载后可定制随意修改，请根据实际需要进行相应的调整和使用，谢谢!并且，本店铺为大家提供各种各样类型的实用资料，如教育随笔、日记赏析、句子摘抄、古诗大全、经典美文、话题作文、工作总结、词语解析、文案摘录、其他资料等等，如想了解不同资料格式和写法，敬请关注!Download tips: This document is carefully compiled by theeditor.I hope that after you download them,they can help yousolve practical problems. The document can be customized andmodified after downloading,please adjust and use it according toactual needs, thank you!In addition, our shop provides you with various types ofpractical materials,such as educational essays, diaryappreciation,sentence excerpts,ancient poems,classic articles,topic composition,work summary,word parsing,copy excerpts,other materials and so on,want to know different data formats andwriting methods,please pay attention!仪表防爆与接地：关键知识与应用实践在工业生产环境中，尤其是化工、石油、矿业等领域，安全问题始终是首要关注点。
仪表施工方案DOC
仪表施工方案DOC一、前言仪表施工在工程项目中占有重要地位，合理的施工方案能够确保项目的顺利进行，降低施工风险。
本文将根据项目具体情况，制定一套综合而详细的仪表施工方案，包括施工流程、材料准备、人员配备等方面的内容。
二、施工流程1.方案制定阶段–分析项目需求与施工环境，确定施工时间、地点和范围。
–编制仪表安装图纸，明确仪表布置和接线方案。
–制定施工计划和安全措施。
2.材料准备–根据图纸要求，准备符合规格要求的仪表、电缆、接线盒等材料。
–检查材料质量，确保符合要求。
3.施工准备–安排施工人员参与安全技术交底，明确施工规范和要求。
–搭建施工现场，确保施工区域清洁整齐，并设置必要的警示标识。
4.施工操作–按照仪表安装图纸要求，对仪表进行安装。
–进行仪表的接线工作，注意接线的准确性和可靠性。
–调试仪表，确保仪表安装正确，功能正常。
5.验收与交接–仪表安装完成后，进行系统联调和测试。
–进行仪表的验收，确保符合要求。
–将施工过程中的记录整理成档案，交由相关部门。
三、材料清单1.仪表：X型压力表、液位计、温度计等；2.电缆：RVV-20.75电缆、RVVP-21.0电缆等；3.接线盒：PVC接线盒、铝合金接线盒等；4.接线端子：插接式端子、螺钉端子等。
四、施工人员配备1.项目经理：1名，负责项目统筹和协调；2.施工工人：若干名，根据项目规模确定工人数量；3.安全员：1名，负责施工现场安全管理；4.质检员：1名，负责施工过程的质量检查。
五、总结仪表施工方案的制定对于项目的顺利进行至关重要。
通过合理的施工流程、材料准备和人员配备，能够提高施工效率，降低施工风险，保证项目的顺利完成。
希望本施工方案能为项目的仪表施工提供有效的指导和保障。
以上为《仪表施工方案DOC》的内容，希望对您在仪表施工方面有所帮助。
防爆接地施工方案
防爆接地施工方案1. 引言该文档旨在提供一份完整的防爆接地施工方案，确保工地的安全性和可靠性。
通过合理的施工和正确的接地设计，有效地降低了爆炸事故的风险。
2. 施工步骤下面是防爆接地的施工步骤：2.1. 选择合适的接地装置根据工地特点和需求，选择合适的接地装置，如接地板、接地网、接地极等。
确保装置具有良好的导电性和可靠的接地效果。
2.2. 清理施工区域在施工前，清理施工区域，确保没有杂物和障碍物。
保持工地的整洁和通风，减少爆炸风险。
2.3. 安装接地装置根据设计要求，安装接地装置。
确保装置的固定牢固且与地面紧密接触，以获得最佳的接地效果。
2.4. 连接接地系统将接地装置与接地系统连接起来，包括主接地线和地网等。
确保连接稳固，避免接触不良和松动，以减少电阻和噪声。
2.5. 进行接地测试在施工完成后，使用合适的测试工具对接地系统进行测试。
确保接地电阻符合设计要求，并且没有任何故障和漏电现象。
2.6. 编制施工记录对施工过程进行详细记录，包括施工日期、施工人员、使用材料等。
这有助于日后的维护和检修工作。
3. 安全注意事项在进行防爆接地施工时，需要注意以下安全事项：- 在施工期间，穿戴合适的个人防护装备，如安全帽、防护眼镜和绝缘手套等。
- 确保工地的通风良好，避免积聚可燃气体和粉尘。
- 遵守施工现场的安全规定和操作规程。
- 在施工前进行必要的安全培训和指导。
4. 维护和检修完成防爆接地施工后，定期进行接地系统的维护和检修。
确保接地装置的导电性和接触性能良好，并进行必要的修理和更换。
5. 结论本文档提供了一份完整的防爆接地施工方案，包括施工步骤、安全注意事项和维护检修等内容。
通过遵循该方案，工地可以有效地降低爆炸风险，保证工作人员和设备的安全。
仪表施工方案(英文版)
ERECTION COMPLETION GUIDELINES FORINSTRUMENTATIONSECTION - EERECTION COMPLETION CHECKLISTSWORK INSTRUCTIONSINSTRUMENTATIONINDEXEQUIPMENT DESCRIPTION CHECK LIST **FORM NUMBERINSTRUMENTS (GENERAL) I001CONTROL D/M VALVES I002PRESSURE RELIEF/ SAFETY VALVES I003DCS SYSTEM I004** FORMS ARE TO BE FOUND AT THE END OF EACH APPROPRIATE SECTION OF THIS MANUAL.ERECTION COMPLETION - INSTRUMENTATIONThis procedure covers the guidelines for reaching agreement on the completion of erection for the instrumentation for the factory. Following the agreement that the erection is complete the equipment will be turned over to the operations team to complete the mechanical testing and commissioning leading to a successful startup.See the checklists for these guidelines as presented following this procedure.1.0 GENERAL COMMENTS ON INSTRUMENTS :1.1 RECEIPT OF INSTRUMENTATION MATERIALS :1.1.1 The client should furnish personnel as required to handle the properreceiving and inspection of instrumentation hardware and bulkmaterials provided by Chemtex as well as instrumentation hardwareand materials provided by the client.1.2 The Client shall perform the following specific tasks as a minimum :1.2.1 Check all assigned materials for physical damage upon receipt.1.2.2 Check for completeness and for correct model numbers againstChemtex specification, drawings and purchase orders.1.2.3 Check and measure crevice plates and meter runs against Chemtexspecifications, drawings and purchase orders.1.2.4 Prepare reports on damaged materials for insurance and replacementpurposes and report all discrepancies to Chemtex Representative.1.2.5 Account for all materials directly delivered or assigned to the client.1.2.6 Report schedule slippages or shortages of any materials to ChemtexRepresentative and expedite corrections or deliveries with localsuppliers if requested to do so.1.3 Chemtex installation Checklist Forms should be used in accordance with thisprocedure for the initial calibration and installation of an instrument. TheErection Completion Checklist Forms should be used for loop checking andto reach agreed erection completion at hand over to operations.1.4 VENDOR DOCUMENTS :1.4.1 It is extremely important that all vendor documentation be thoroughlyreviewed as to Handling Installation, Calibration, Maintenance, etc. ofeach instrument. This applies to every section of this procedure.1.5 Co-ordination of instrument work with / through the Chemtex Field Instrumentspecialist.1.5.1 This Co-ordination is particularly important. Joint agreement isnecessary on all instruments as to calibration, Installation and loopcheck.1.6 This procedure is not intended to change the specifications, standards,codes, P&I diagrams, arrangement / assembly / detail drawings or otherdocuments that have already been established for a particular project. Itshould only be used as a suggested set of guidelines that if applied logicallywill be of use by the site team to establish that the material and equipment /vessels have been correctly installed / erected and to give guidance onreaching agreement that the erection is complete and ready to turn over tothe operations team for mechanical testing, commissioning and startup.1.7 If DCS exists, see DCS vendor manuals to cover same. The sections in thisprocedure that are applicable may vary if DCS exists.2.0 INSTRUMENT INSTALLATION AND MOUNTING :2.1 Instruments shall be mounted level and upright unless otherwise indicated onthe drawings. Electrical conduits shall not be used for support of instrumentsor accessories. Impulse piping shall not be used for support unlessspecifically permitted by Chemtex installation drawings (as with certain closecoupled kits).2.2 Instruments shall be mounted so that access doors may be fully opened,insulated covers removed, tracing tubes or wires disconnected withoutinterference with adjacent equipment or conflict of these mechanical featureswith each other.2.3 All field transmitters, controllers, control valves, analyzers, etc. shall belocated accessories to grade or platforms so that they can be serviced easily,without the need of portable ladders or scaffolds.2.4 "Hands-on" items for normal and emergency use i.e. valve handwheels,manual reset devices, etc.) shall be easily accessible at grade or plateforms.Gages and meters should be accessible , but may be mounted out of normalreach if easily viewed from specific vantage points (i.e., an associatedmanual control location) at grade or platform.2.5 Instrument cases shall not be mounted adjacent to hot or vibrating equipment(except where directly attached to vessels) and shall not be mounted underdrain points nor immediately above vent points.2.6 The center line of all stand mounted instruments shall be wherever possible,1.3 meters above grade, floor or operating platform.2.7 Field mounted instruments shall be mounted on floor stands, structural steelor masonry structures. If instruments are mounted on fire proofed membersthe installer shall assure that the mounting hardware is in place prior to fireproofing.2.8 Supports shall be installed, as shown in the standard installation details.There shall be no welding of supports to any pipe, without first obtaining the permission of Chemtex's Field Representative.2.9 Filled system capillary tubing shall be installed to prevent kinking, flattening,or breaking. Roll excess lengths into a neat coil and securely support in a location affording maximum protection with least possible danger of damage.Where possible, run capillary tubing flat against structural members and secure with copper traps at least every 1.8 meters.2.10 Where capillary cannot be placed flat against structures, install it in suitableinverted galvanized steel channel to within 0.9 meters of instrument or valve connection.2.11 INSTRUMENT HARDWARE INSTALLATION GUIDELINES :2.11.1 In general, instruments located in the field shall be installed as closeas practicable to the primary process connection :- To minimize the length of instrument leads carrying unstable,toxic or corrosive fluids.- To minimize the use of protective heating for instrument leadsand instruments line.- To limit the length of flow meter leads to 1.5 meters maximum.2.11.1.2 Local indicators, such as pressure gages, dial thermometersand flow indicators shall be located so as to be accessibleand readable from grade or operating platform.2.11.1.3 All field mounted transmitters (except for direct connectedflow transmitters), controllers and control valves shall belocated so as to be easily accessible from grade or platform.2.11.1.4 Temperature transmitters for control or analog recordingapplications which employ thermocouple type primarymeasuring elements shall be located behind the centralcontrol room control board faces.2.11.1.5 Instruments which measure variables in controlled streamsshall be located so as to be visible from the controlling valve.2.11.1.6 Indicating instruments which measure variables in automaticcontrol loops shall be located, where feasible, so as to bevisible from the controlling valve.2.11.1.7 Process stream analyzers shall be located within walk-intype metal houses or cubicles where ambient conditions aresatisfactory for proper operation and maintenance.2.11.2 Mounting and / or Support :2.11.2.1 In line field mounted instruments may utilize surface, yoke,pipe or bracket mountings.2.11.2.2 Flow transmitters shall be generally direct connected whenthey are accessible from grade by ladder or rolling platformand are within 8 meters of grade. Direct connectedtransmitters shall be supported from the line independent ofthe orifice nipples or flanges.2.11.3 Instrument Protection :2.11.3.1 In general, instruments shall be protected from freezing,corrosion and other line conditions by :- Protective heating (Discretion shall be exercised inheating flow meters and leads which contain volatileprocess fluids to prevent inaccuracies due to differencein head in lead lines)- Sealing- Housings- Insulation- Purging2.11.3.2 Special attention shall be given to prevention of overheatingof steam traced or electrically heated instruments.Manufacturer's recommendations for maximum allowabletemperature for each instrument shall not be exceeded.2.11.4 Temperature Instruments :2.11.4.1 Thermometer and Thermocouple Wells :- Where applicable threaded thermometer andthermocouple wells shall be used with Teflon tapedthreads.- Thermowells shall be installed in accordance withappropriate drawings.2.11.5 Pressure Instruments :2.11.5.1 Pressure instruments in steam or other condensable vaporservice may be protected by a liquid seal.2.11.6 Flow instruments :2.11.6.1 Piping arrangement for acceptable flow meter accuracy shallconform to the recommendations of the drawings provided.2.11.7 Level instruments :2.11.7.1 All external level instrument installations shall be equippedwith plugged vents and valved drains, either in theinstrument or the connection piping.2.11.7.2 Where an external pipe column (bridle) is used to mountlevel gages on a vessel, the pipe column and connections tothe vessel should be minimum 50 mm size. Level gageconnections to the bridle should be 19 mm size minimumand shall be fitted with block valves.2.11.8 Analytical instruments :2.11.8.1 The sample lines, fittings and accessories shall be selectedand installed so as to preclude a change in samplecomposition between process line and analyzer.2.12 INSTRUMENT BULK MATERIAL INSTALLATION PRACTICES :2.12.1 Wiring :2.12.1.1 Instrument 115 volt and / or 220 volt AC power, electronicDC current signals, thermocouple extension wire, RTD andanalyzer low level signal wire shall be run in separateconduits.2.12.1.2 In general, individual pairs of thermocouple extension wirewill be run in conduit to a field mounted junction box orsatellite multiplexing station for termination. Whereeconomically justified, multiplier cables, run in trays, willconnect the field mounted junction box or satellitemultiplexing station with the central control roomterminations.2.12.2 Conduit :2.12.2.1 All thermocouple RTD conduit shall be sealed at entry to theControl Room.2.12.2.2 All conduit or cable carrying low level instrument signalsshall be located as far away as feasible from conduitcarrying 110 volts and higher voltage power wiring.2.12.3 Tubing :2.12.3.1 Field runs of pneumatic tubing shall be installed overhead orunderground depending upon control center location withrespect to Plot Plan.2.12.4 Junction Boxes (If applicable) :2.12.4.1 All signal leads shall be tagged and checked out tocorrespond to the Element and Transmitter point tagging onthe P&I Diagrams. They shall be arranged in the numericalsequence indicated.2.13 INSTRUMENT CALIBRATION TESTING AND FUNCTIONAL CHECKOUT :2.13.1 In general, individual instruments shall be calibrated by the Client,with overview by Chemtex Field Specialist.2.13.2 Prior to startup, each control loop will be functional checked by theClient and Chemtex as a system by running a dummy operation ofeach control loop. Chemtex's Instrument Representative shall witnessthe control loop functional checkout and approve same on loop basis.2.13.3 Any improper calibrations shall be corrected by the Client.2.13.4 Pneumatic control and transmission signal lines shall be testedappropriately for leakage. In seal position of manual to automaticstations, valve loading pressure shall not drop more than 0.003kg/sq.cm in fifteen minutes.2.13.5 In-line or directly connected instruments, such as, orifice plates, flowtubes, control valves, analyzers, etc. which may be damaged duringfield pressure testing or line flushing of the unit shall be removedand/or disconnected during this period.3.0 INSTRUMENT IMPULSE PIPING :3.1 Except for very close coupled transmitters which are supported by impulsepiping, ample expansion loops shall be provided on all hot, cold or vibratingservices.3.2 Where impulse lines are indicated to be of rigid pipe construction care shallbe taken to assure that no stresses nor strains are exerted on the instrument,due to improperly aligned or poorly supported piping. Impulse piping toremote located instruments shall be securely bracketed to existing structuralmembers to relieve any vibration at the instrument.3.3 Threaded fittings for impulse lines of rigid pipe or tubing should be made upusing Teflon tape. When temperatures exceed 450°F (230°C) threadcompounds suitable for high temperature service should be used.4.0 INSTRUMENT AIR PIPING :4.1 Drawings will show the general layout of the signal air tubing but exactrouting is subject to practical modification during construction.4.2 Where tubing requires bending, care shall be taken to assure that tubing isnot flattened nor pinched.4.3 Prior to tightening the tubing collar to the fittings, care shall be taken toassure that the tubing end is square, inserted fully through the ferrule into thetube fitting and is properly aligned with the fitting. Tightening of the collarshall be done with the prior sized wrench. Generally a total of 1-1/4 turn afterhand tightening will be sufficient to prevent leakage.4.4 Threaded fittings shall be made up using Teflon tape. Care shall be taken toassure that the tape is applied to the male thread only and does not enter theinside of the pipe.5.0 ELECTRICAL INSTRUMENTATION WIRING :5.1 Extreme care is to be used in the handling of electronic instruments to assurethat moisture, dirt or oils from the hands do not come in contact with thevarious resistors, terminals and other components.5.2 Each wire, cable and terminal point shall be tagged with suitable wiremarkers in accordance with detailed drawings.5.3 In general, the electronic instrumentation wiring is broken down into 5categories which must be isolated from each other in transmission i.e.,cables, conduits and junction boxes must be dedicated electrically andphysically to a single category.5.3.1 Electronic; low level signal wire (analog signal transmission)5.3.2 Electrical; high or low level signal wire (alarm wiring)5.3.3 Electrical; high or low level signal wire (shutdown wiring)5.3.4 Electrical; high or low level signal wire (control wiring)5.3.5 Thermocouple and millivolt wiringNote : Some categories, depending on voltage levels, may becombined. Refer Inst. Design Basis and Tray Routing dwgsalong with Cable Schedule for the same. All the cable runsshall be direct runs as far as possible.5.4 Electrical instrumentation wiring is generally routed through field junctionboxes which serve as collection and distribution points. Final routing to/from junction boxes shall be determined during construction. The final installation must be orderly to/from each instrument. Each junction box shall be numbered as shown on the detailed drawings.5.5 Multi conductor cable shall be run, from the field junction boxes totermination points in the control room, without splices. Each cable shall be numbered in accordance with detailed drawings. At the termination point, the cable and shall be firmly clamped to the support structure and the individual wires will be broken out and distributed neatly.5.6 The erection controller shall confirm continuity from all field devices to thecontrol center terminals for all control and interlock circuits for conformance to wiring diagrams and specifications.5.7 Below ground, electronic signal wires shall be run in multi-cable or conduit inprotected trenches per appropriate drawings. Above ground, signal wires shall be supported in commercially available tray or rigid conduit except that short runs of armored flexible conduit to/from a field instrument may be self supporting. Layout shall be accordance with appropriate drawings. Where trays are used, the cable shall be arranged in an orderly manner and shall be provided with slack and shall be secured with clips. Drawings shall be followed for supports at appropriate intervals to satisfy wind loading and local weather conditions.5.8 Where signal and / or electrical circuits are carried in trays, the tray shall beeffectively grounded to the building steel or plant ground grid to maintain electrical continuity, but the tray itself shall not be used as a part of a grounding circuit.5.9 Where rigid conduit is used, the installations shall be planned such that raincannot enter conduit fittings during installation or after installation is complete.All fitting covers must be securely tightened to prevent entrance of rain or moisture. Thread compound shall be used on all threads to assure tight seal.5.10 Exposed conduits shall be run parallel or at right angles to walls and beams,except where other arrangements are indicated or necessary, and shall besecurely fastened to structures. Conduits shall not be supported fromequipment which may be removed for maintenance purposes. No conduitshall be 'fastened to piping. Conduit fittings shall not be welded to anystructure.5.11 All conduits shall be sloped and effectively drained. At locations whereexcessive moisture conditions exist, provisions shall be made for thedrainage of the conduit system. This may be by means of drain fittings, whichshall be inserted into conduit fittings or boxes at low points. All conduits ventsand drains shall be thoroughly cleaned to ensure proper functioning.5.12 Ends of conduits shall be inspected to assure that no raw edges are presentwhich would damage cable insulation during pulling.5.13 Particular care shall be applied when pulling shielded cables to assure thatpulling forces do not separate or otherwise damage the cable shield.6.0 CONTROL PANEL INSTALLATION :6.1 Control panels will usually be of the pre-wired design. Panel installation willrequire setting in the location provided, assembly of panel sections,connection of power supply, transmission and control wiring.6.2 Care shall be taken to assure that prior to installation the panel is stored in adry location and fully protected from mechanical damage.6.3 Particular care shall be taken to assure that all panel wiring is reconnected tothe proper terminals and that no open wiring is doubled or coiled inside wireducts or conduits.7.0 HEAT TRACING AND INSTALLATION :7.1 Heat tracing for instruments may be provided for by either steam tracing orelectric tracing is specified. Insulation shall be installed prefabricated /designed to accommodate a specific instrument. Assembly / removal of thisinsulation must be possible with instrument, tracing, impulse piping and allother parts in place.7.2 The heat tracing and insulation must be installed in such a way that allinstruments and fittings may be easily inspected in place. Also tracerdisconnects must be installed to provide for easy instrument removal.8.0 INSTRUMENT CALIBRATION :Note : Use only those guidelines that apply.8.1 The instrument shop at the site must be ready and in operation beforecalibration / installation of instruments begins.8.2 The calibrator shall calibrate all devices within the instrument control system,including but not limited to those used to measure, transmit, indicate, record,alarm control, calculate, relay or actuate.8.3 Instrument specifications and appropriate vendor documents will provide theproper data for the calibrator to permit him to do calibration.8.4 The client shall assure all calibration test instruments required for instrumentcalibration are available and ready for use either in the field or in theinstrument shop.8.5 All test instruments and standard equipment shall have an accuracy of±0.25% of full scale or better. Instruments used to read millivolt signals shallbe the potentiometric type with circuits compatible to those being tested.Accuracy of potentiometric type test instruments shall be ±0.1% of full scaleor better.8.6 Calibration of a specific item is the obtaining of an output signal related to asimulated input for that specific device. This relationship shall conform to thespecified action, accuracy, and intent of the device.8.7 The acceptable calibration performance of specific devices shall be acalibration accuracy equal to or better than the manufacturer's publisheddata. This accuracy requirement is given in the Chemtex specification.8.8 The calibrator should utilize Chemtex suggested checklist forms withChemtex field specialist's supervision to document the calibrationperformance and acceptance. The completed forms shall be transmitted toChemtex field specialist on a regular basis for review. The form should carrythe signature of the Client and Chemtex Representation.8.9 The following paragraphs provide a general outline for calibration of certainfrequently encountered instruments and control devices. The calibrator shallfurnish complete calibration procedures to Chemtex before starting work.8.9.1 Instruments wherever possible shall be bench calibrated prior toinstallation. Devices such as panel mounted controllers, recorders,etc. may be calibrated in their permanently installed location. Benchcalibration should be done in a suitable shop at the job site. Afterinstruments have been field installed, zero and span shall berechecked.8.9.2 Bench calibration shall consist of the following functions :8.9.2.1 The device shall be mounted in the same plane and attitudeas it will be installed in its permanent position.8.9.2.2 Connect the proper signal simulator to provide an inputsignal of 0-100% range. Connect the proper readoutinstrument to indicate 0-100% of range.8.9.2.3 Calibration performance check shall fix accuracy values at10%, 50% and 90% of range.8.9.2.4 Align and calibrate the device using manufacturer'spublished data and methods.8.9.2.5 Set direct or reverse controller action as specified oninstrument specification sheets.8.9.2.6 Set all controller modes as follows :Proportional - 100%- Integral - minimum repeats /min.- Derivative - off8.9.2.7 Install ink supply (if required).8.9.2.8 Install the chart if required and check range to matchinstrument specifications.8.9.2.9 Ascertain that the pen properly "ink" and writes on the chart.8.9.2.10 Disconnect test instruments and install the instrument in thepanel or other mounting as required.8.9.3 Upon completion of calibration, all instrument devices shall beprotected from sudden movements, acceleration or shocks, and shall be stored in a protected manner preventing moisture and dirt from entering the connections or housing.8.9.4 Thermocouple or resistive elements shall be calibrated as follows :8.9.4.1 Disconnect the lead wire at the control room termination andat the sensor head. Measure the loop wire resistance.Measure the wire to ground resistance. Thesemeasurements shall fall within the limits of the allowableinput impedance of each measuring device.8.9.4.2 Remove the device from the mounting or test in place.8.9.4.3 Disconnect test instruments and reinstall element andreconnect all wiring.8.9.5 Diaphragm and cylinder operated valves and positioning devices shallbe calibrated as follows :8.9.5.1 Connect the proper calibration instruments to provide aninput signal 0-100% of range and to provide (required) anoutput indication of 0-100% of range.8.9.5.2 Calibrate the device using manufacturer's published dataand methods.8.9.5.3 Set positioner to action and check actuating device (air orelectrical relay, switch, etc.) for proper action.8.9.5.4 Calibration performance check shall fix accuracy values at10%, 50% and 90% of range. On-off devices shall becalibrated for 0% and 100% of range only.8.9.5.5 All fast closing valves shall be time checked for compliancewith specification.9.0 INSTRUMENT LOOP CHECK :Note : This should be coordinated with DCS vendor manuals if appropriate.9.1 The checker shall perform loop check-out on all devices within the instrumentcontrol system, including but not limited to those used to measure, transmit,indicate, record, alarm, control, calculate, relay or actuate. This also includessuch passive elements as required to complete the loop function such aswire and tubing.9.2 The loop check-out shall show that each item within the loop operatesproperly, has the correct relationship to the loop, has the proper direction ofaction and functions normally over the entire range. All setpoints, deadbands,bypasses, etc. shall be tested.9.3 The checker shall assure that all test equipment is available as required forloop check-out.9.4 A continuity test shall be performed on all loops in each system. Theparticular loop check-out requirements will vary with the loop configuration.9.5 Loop check-out shall be done with the loop powered by its normal operatingpower source.9.6 A simulated process signal shall be produced at the transmitter by eithermechanically simulating a process input or using a process signal simulator applied to the process sensing element.9.7 The transmitter output shall be observed at all controlling, indicating,recording, alarm, shutdown, etc. points that make up the loop configuration.9.8 The controller output shall be checked at the controller and the control valve.The controller output shall be tested in manual, automatic and/or computer modes of operation. All control mode functions such as proportional band, integral and derivative shall be tested as follows :9.8.1 Control Settings :Proportional 100%Integral Minimum Repeats/min.Derivative OffHi Limit MaximumLo Limit MinimumSet Point 50% scaleAuto/Manual ManualManual Output 50% scale9.8.2 Apply 60% of span pressure to transmitter.9.8.3 Switch A/M to auto, observe output and valve action.9.8.4 Valve should slowly open or close since the manually set setpoint isnot identical to the transmitted signal (measured variable).9.8.5 Move setpoint above and below measured variable and check to seethat valve action reverses.9.8.6 With controller action stable, increase pressure to transmitter to 100%of span. Control valve should go to 100% open (direct actingcontroller).9.8.7 Bleed transmitter pressure to 50% of span, stabilize controller thenbleed pressure to 0% of span. Control valve should go to 0% (directacting controller).9.9 A polarity check shall be made for all thermocouple installations.9.10 In order to ensure that each temperature point is connected to the correctthermocouple, disconnect the thermocouple wire at the thermocouple head.This will drive the output indicator to the burn-off position (usually upscale).9.11 All switch wiring connections shall be checked for normally open or normallyclosed contacts, whichever is noted on the instrument specifications or wiringdiagrams.9.12 A simulated actuation shall be made on each alarm and shutdown switch. Allswitch setpoints shall be checked for compliance with instrumentspecifications.9.13 The alarm loops shall be checked with the anunciator powered by its normaloperating power source.9.14 Automatic emergency devices and interlocking circuits shall be checked forcorrect operation when shutdown switches are actuated. All bypasses shallbe actuated in order to check the shutdown circuit.9.15 Loop check-out for packaged equipment systems such as boilers,compressors, dryers, etc. must be coordinated with the package systemsupplier. Interfaces between the package systems and any other instrumentshall be checked by the tester.9.16 On computer loop check-out the checker's responsibility will terminate at thecomputer interface input/output terminals. If further check-out is required thedetails will be determined on an individual job basis.9.17 The checker with the Chemtex Field Specialist should utilize forms suggestedby Chemtex to document the functional check-out. The completed formsshall be transmitted to Contractor's Representative on a regular basis.9.18 The Chemtex Field Specialist at the site should witness all loop check-outtesting.10.0 INSTRUMENT PIPE CLEANING AND TESTING :10.1 All instrument subheaders and pneumatic tubing circuits must be blown downwith air prior to putting instruments into operation. The purpose of individualair blowdown is to prevent any moisture, dirt, foreign particles, etc. frominadvertently being introduced into the instruments. The subheader systemshall be blown down first and then each individual air supply shall be blowndown.。
仪表防爆及接地系统施工方案(中英)
仪表防爆及接地系统施工方案Construction Scheme forInstrument Explosionproof and Earthing System1 编制说明:在现代工业生产装置中，许多易燃、易爆、易挥发的工艺介质出现在生产流程中,防爆施工对装置的安全运行非常重要;各种工艺参数的检测、显示和控制都实现了自动化、集中化、智能化，特别是集散控制系统（DCS）的广泛应用,对仪表接地系统的要求越来越高.正确完成仪表接地系统,对保证设备及人身安全,保证装置安全运行意义重大。
为了高速优质地完成装置防爆及接地施工任务,特编制本方案。
2编制依据：2.1设计施工图及其它设计文件。
2.2现行《自动化仪表工程施工及验收规范》。
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—proof 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。
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仪表防爆及接地系统施工方案Construction Scheme forInstrument Explosionproof and Earthing System1 编制说明：在现代工业生产装置中，许多易燃、易爆、易挥发的工艺介质出现在生产流程中，防爆施工对装置的安全运行非常重要；各种工艺参数的检测、显示和控制都实现了自动化、集中化、智能化，特别是集散控制系统（DCS）的广泛应用，对仪表接地系统的要求越来越高。
正确完成仪表接地系统，对保证设备及人身安全，保证装置安全运行意义重大。
为了高速优质地完成装置防爆及接地施工任务，特编制本方案。
2编制依据:2.1设计施工图及其它设计文件。
2.2现行《自动化仪表工程施工及验收规范》。
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-proof and wiring for electric equipment and instrument equipment, which used in explosion and fire dangerous areas, must accord with the design requirement and contentwith 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 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 aren’t damage and crack in appearan ce 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, the 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 equipment 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 instrument 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-proof 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 the 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 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 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:4.3.1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 one 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。