1. Tools required

Specific tools are required for cleaning and tensioning the fasteners. Additionally, always use standard safety equipment and follow good safety practices.
a. Calibrated torque wrench, hydraulic or other tensioner
b. Wire brush (brass if possible)
c. Helmet, Safety goggles, Lubricant
d. Other plant-specified equipment

1. 安装工具

清洁、拧紧和松开紧固件需要专用工具。
始终使用标准安全设备并遵守安全规则。
a. 校准扭矩扳手和液压或其他张紧器
b. 钢丝刷(铜/铜，如果可能)断裂 c. 头盔、安全眼镜、润滑剂
d. 其他工厂指定设备

2. Cleaning

Remove all foreign material and debris from

2. 干净的

清除异物和碎屑。

3. Examine

a. Examine fasteners (bolts or studs), Nuts and washers for defects such as burrs or cracks. Check insulating washers and insulating sleeves are torn or cracked.
b. Examine flange surfaces for warping, radial scores, heavy tool marks, or anything prohibiting proper gasket seating. Make sure the gaskets are isolation gaskets.
c. Replace components if found to be defective. If in doubt, seek advice.

3. 测试

a. 检查紧固件(螺栓或螺柱)、螺母和垫圈是否有缺陷，例如粗糙的零件和裂纹。 如果需要绝缘功能，检查绝缘垫圈和绝缘套管是否有缺陷或没有撕裂或破裂。
b. 检查法兰表面是否存在妨碍正确安装垫圈的翘曲、径向或跟踪痕迹。 检查气包是否为具有绝缘功能的气包。
c. 如果发现有缺陷的部件，则更换该部件。 如果您有任何疑问，请讨论

4. Install Gasket

a. Ensure gasket is the specified size and material.
b. Examine the gasket to ensure it is free of defects.
c. Carefully insert the gasket between the flanges.
d. Make sure the gasket is centered between the flanges.
e. Bring flanges together, ensuring the insulation materials (insulation sleeves, washers & gaskets) aren’t pinched or damaged.
f. Put insulation sleeves on the bolts and insert insulation washers and steel washers.

4. 垫片安装

a. 确保垫片由规定的尺寸和材料制成。
b. 检查垫圈是否有缺陷。
c. 小心地将垫圈安装在法兰之间。
d. 确保垫圈位于法兰的中心。
e. 安装绝缘体(绝缘套管、垫圈和垫圈)，检查是否安装不正确或损坏。
f. 将绝缘套管装在螺栓上，并确保将绝缘垫圈装在钢垫圈内。

5. Install and tighten fasteners

a. Always use proper tools Calibrated torque wrench or other controlled tensioning device
b. Consult your gasket manufacturer for guidance on torque specifications
c. Always torque in a cross bolt tightening pattern.

5. 装订工具的安装和拧紧

a. 始终使用适当的工具。
b. 请咨询垫片制造商以获取扭矩指导。
c. 拧紧螺栓时，始终沿对角线方向进行。

6. Tighten the nuts in multiple steps

Step 1. Tighten all nuts initially by hand (Larger bolts may require a small hand wrench)
Step 2. Torque each nut to ~30% of full torque
Step 3. Torque each nut to ~60% of full torque
Step 4. Torque each nut full torque, again still using the cross bolt tightening pattern (larger diameter flanges may require additional tightening passes)
Step 5. Apply at least one final torque to all nuts in a clockwise direction until all torque is uniform (Larger diameter flanges may require additional passes)

6. 多级螺母拧紧

阶段1. 所有螺母最初都是用手拧紧的。 (对于大螺栓，可以使用小手动扳手。)
阶段2. 将每个螺母拧紧至 30%。
阶段3. 将每个螺母拧紧至 60%。
阶段4. 以对角线顺序完全拧紧螺母。 (大直径法兰提供额外的紧固。)
阶段5. 最后顺时针拧紧螺栓，直到所有扭矩均匀。

7. Re-Tightening

A . Caution
Consult yours gasket manufacture for guidance and recommendations re-tightening.
B-1. Do not re-torque elatomer-based, non-asbestos gaskets after they have been exposed to elevated temperature unless otherwise specified.
B-2. Re-torque fasteners exposed to agrresive thermal cycling.
B-3. All re-torquing should be performed at ambient temperature and atmospheic pressure.

7. 重新拧紧

A . 警告
有关重新拧紧的说明和注意事项，请咨询垫圈制造商。
B-1 . 除非另有规定，含橡胶的非石棉垫圈在暴露于高温后不得重新拧紧。
B-2 . 承受剧烈热变化的拧紧部件需要重新拧紧。
B-3 . 所有重新拧紧都应在环境温度和大气压下进行。

8. Notes on use

Install a protective cover on insulation sets to prevent exposure on rainy days.
Note : Pay attention Insulation set of Mica material in particular.

8. 使用注意事项

安装绝缘套件后，安装保护罩以防止雨淋。
对于云母套管、垫圈和垫圈，需要特别注意。