The purpose of this project is to add a steel gantry to the south side of the compressor plant of the hydrochloric acid plant. As this project is a lifting operation within the plant area, for safety reasons, the necessary lifting risk assessment must be done and care must be taken to avoid damage to the original equipment and instruments during lifting. Before lifting, adequate preparation and arrangements should be made for transport access, power supply, fire-fighting facilities, main materials and machinery and labor. Now, according to the site survey, after the steel beams and columns are grouped on the ground, the proposed solution is to use a 50 tonne vehicle crane for a one-time lifting in place.
The lifting work shall execute the following codes, specifications and requirements:
本吊装工程执行以下规范、规程和要求：
① Code for Construction of Lifting Work for Engineering Architecture
工程建设起重施工规范；
② Specification of Safe Operation for Lifting Work
起重吊装安全操作规程；
③ Performance List of Conveying flatbed trucks, cranes
运输平板车、吊车性能表；
④ Management System of Safe Operation of Cranes Issued by Bayer Company
拜耳公司有关吊车安全作业管理制度；
⑤ All concrete requirements for lifting work set out by the Owner and Engineering Supervisor.
Various specific requirements of the owner and the works supervisor for the lifting works.
业主和工程监理对吊装工程的各项具体要求。
三、Lifting execution procedure 吊装施工程序
3.1、Construction procedure施工步骤
1、Field and ground base treatment 场地及地基处理
a、The main road for the Plant shall keep unblocked. 装置的主干道始终保持通畅。
b、Ensure the crane legs have sufficient bearing areas. Bayer provide the area and the concealed work document.保证吊车支腿有足够的承压面积（业主提供此区域隐蔽工程资料）。
2、Crane shall enter into site and be in position as per drawings. (see lifting drawings for details)
汽车吊车进入现场，按图站位（详见吊装示意图）。
3、Written consent by the owner and management company shall be obtained before removing existent iron balustrade if necessary.
需要拆除原有铁围栏或其它原有设施前要经过由业主及管理公司方面的书面许可。
4. Steel structure grouping construction procedure.
4、钢结构组对施工程序。
4.1 Firstly, the two steel columns are placed flat on the level ground in the order of the construction drawing for erection, and the two ends are temporarily supported with triangular Φ48 steel pipes.
4.1首先将两根钢柱按照施工图顺序平放至平整的地面上进行竖立，两端用三角形Φ48钢管做好临时支撑。
4.2 Lift the steel beam by crane to the middle of the two steel columns for grouping and then tighten the bolts.
4.2将钢梁用吊车吊至两钢柱中间组对，然后进行穿螺栓紧固。
4.3 Tie up the lifting points of the gantry steel structure and lift it into position. (See lifting diagram)
4.3绑扎好龙门架钢结构吊点，进行起吊就位。（见吊装示意图）
5、The hoist spreading position should be approved by Bayer & TJU.
吊车的站位应得到业主及管理公司的确认。
6、Crane shall be hooked and start lifting. Lift the steel apart from the truck to the work area radius and stay for 5 minutes. Inspect the support of crane, ground, cable wire, clamp and body of container. Lifting shall be continued after written confirmation with the owner.
7、After finishing of lifting work, the Owner shall sign and approve.
吊装结束以后，业主签字确认。
8、Arrangement of period for crane application 吊车台班时间安排。
One working period of crane is 1 days. 汽车吊吊车工作台班为1天.
3.2 Technical presentation already done and prepared lifting plan approved by the owner.
已经进行吊装施工技术交底工作，并编制吊装施工方案已报得业主批准。
3.3 Gantry steel structure lifting in place
3.3 龙门架钢结构吊装就位
After the gantry frame steel structure is lifted into position, first do not unload the buckle immediately, let the sling bring up the strength, after the two sides of the steel column with the pad iron pad solid, the middle traveling beam bolts tightened, and then slowly land unhooked. Immediately carry out secondary grouting, and replace the damaged bolts on both ends of the steel column after the concrete has reached a certain strength.
Q’– Weight of hooks, guy wire and sling chains 钩头、吊索具的重量Q’＝0.5t
Locating height 就位高度：-1.000m
3.4.2 Check Calculation of Lifting Height 吊装高度核算
Lifting height at a radius of 15m 15米半径时吊装高度
Length of pole 杆长：21.6m
Radius 半径：15m
Vertical height of jib 吊臂垂直高度：15.5m
Lifting height 起重高度：15.5m
Crane height 吊车自身高度：1.8米
Therefore, lifting height can meet lifting requirement. (see attachment 1 and 2)
因此，吊装高度能满足吊装要求。（见附图1、2）
3.4.3 Calculation of Lifting load rate 吊装负荷率计算
3.4.4Parameters of70-ton hydraulic crane (see attachment 1 and 2)
70吨液压吊参数（见附图1、2）
① Lifting weight:4.5t (steel weight + guy wire and sling chain weight)
吊装重量：4.5t (钢结构重+吊索具重)
② Working radius 作业半径： 15米
③ Rated lifting capacity 额定吊装重量：11吨
④ Load rate 负荷率：41%
See Attachment- 1/2 见附图-1、2
四、Safety Measures 安全措施
1、 We are responsible for inspection of the employee’s work permit issued by the labour bureau.
我公司负责检查所有参加施吊人员的劳动局颁发的职工上岗证。
2、 We shall organize all lifting participants to understand construction plan and define their own responsibility and obey commander.
我公司组织参加施吊人员熟悉详细施工方案，并明确各自的岗位职责，服从指挥。
3、 Prior to work, safety officer shall organize the personnel concerned to inspect the machine and tools. No mechanical trouble and unacceptable tools shall be allowed.
施工前安全员负责组织有关人员对施工机械和工具检查，严禁机械带故障作业及使用不合格的工具。
4、When wind force ≥6, working at night, and under stormy and foggy weather. Stop lifting work.
风力≥6级、夜间、大雨大雾或能见度低天气，停止吊装作业。
5、Enclose the working area with flag rope and provide warning signboard. 2 guards shall be appointed to stop personnel with no access permission.
在作业区域用旗绳围栏，并设禁行警告牌，设2名警戒人员，严禁无关人员进出。
6、Lifted load shall not rest on the air for a long time. Standing under the jib shall be strictly forbidden.
起吊重物，不得长时间停留在空中，吊车起重臂下严禁站人。
7、Establish safety guarantee system for equipment lifting
建立设备吊装安全保证体系。
8、Operators working at elevated height shall require regularly physical examined. Personnel who are not suitable for elevated work shall not be allowed to work at height.
从事高空作业人员要定期体检，凡不适合从事高空作业的人员，不得从事高空作业。
9、Safety helmets should be prepared when entering into construction site and safety belts or harness should be prepared when working at height.
进入施工现场必须戴好安全帽,高处作业系牢安全带。
10、All cranes (including assisting crane) shall not be allowed to overload work .
所有吊车(包括溜尾吊车),严禁超负荷作业。
11、Prior to lifting, confirm uniform commanding signal. When commanding, flag and whistle should be prepared completely with clear signal, timely cooperation and uniform commanding.
