TEAM B衬里管道安装方案

门等的重量和附加力矩不得作用在设备接口上，并且容许偏差符合Dow Corning 的要求。

6.2.14. The flange should be inspected freely prior to the connection between

pipes and rotating equipment flange.

在管道与传动设备法兰连接前应自由状态下检查法兰的平行度和同轴度。 6.2.15. Pipe installation allowance 管道安装允许偏差:

Project 项 目 Inside room Coordication 坐标 Pipe rack and trench 架空及地沟 室内 Outside room 室外 Embed 埋 地 Inside room Elevation 标高 Pipe rack and trench 架空及地沟 室内 Outside room 室外 Embed 埋 地 Horizontal piping levelness 水平管道平直度 DN＞100 DN≤100 ±25 2L‰，most 50 2L‰，最大50 3L‰，most 80 3L‰，最大80 5L‰，most 30 5L‰，最大30 15 20 ±15 60 ±20 15 Allowance允许偏差 25 Vertical pipe verticality 立管铅垂度 Space between pipe in line 成排管间距 Cross pipe exitine or insulation layer 交叉管的外壁或绝热层间距 衬里管道安装方案 Dow Corning Internal page9of18

6.2.16. After the pipe pressure test and blasting and being standard, the

connection between pipes and equipment should be inspected and the allowance shall apply to the follows, if have, adjustment should be done till being standard.

管道经试压、吹扫合格后，应对该管道与设备的接口进行复位检查，其偏差符合下表，如有偏差应重新调整，直至合格。

Rotate speed of equipment Flatness (turn/min) 平直度（mm） 设备转速（转/分） 3000---6000 ≤0.15 >6000 ≤0.1 Coaxiality 同轴度（mm） ≤0.5 ≤0.2. 6.2.17. After finishing the system, all the bolt on the line should be inspected one

by one by hand to ensure technology completation.

系统完工后，应对所有管线上的螺栓用手进行逐个检查，以保证螺栓已按技术要求完成。

6.2.18. The piping construction standard which needs static electricity earth

complies with general piping construction standard, but jumper need to be used to connect flanges. Pipeline must be grounded in certain distance. Earth plate, distance, jumper type/size, connection type, type of earth wire and space shall as per specification, drawing and technical instructions.需进行静电接地管道施工要求，与一般性管道施工要求一致，但法兰连接处都需连接跨接线，管线每间隔一定距离有接地线。接地板、接力矩值、跨接线规格、连接形式、接地线规格、间距等根据规范、图纸、技术规格书执行。 6.3. Flange connection 法兰连接 6.3.1.

Prechecks / requirement 预检 / 要求

6.3.4.1. Visually inspect nuts and bolts for signs of damage (burring, stretching, corrosion, bending) and replace when necessary.

目测检查螺栓螺母上是否有破损痕迹（毛刺、划痕、蚀痕、弯曲），必要时

进行更换。

6.3.4.2. Identify gasket, nut / bolt specification is correct to the flange type

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and size.

如用垫片，确认垫片、螺母/螺栓规格是否与法兰类型和尺寸吻合。

6.3.4.3. Do not tape gasket into place across the sealing surface as this can cause potential leak paths.

如用垫片，垫片不应通过密封面敲入，否则会导致泄露。

6.3.4.4. Gaskets should be new and undamaged – NEVER RE-USE AN OLD GASKET.

垫片应是全新无损的-不允许使用旧的垫片。

6.3.4.5. Lubricate all threads and bearing surface of the nut with Molykote HSC plus before assembly.

组装前，应使用Molykote HSC plus 润滑所有螺纹和螺母的承压面。 6.3.4.6. All tolerances should be applied to correctly supported unrestrained piping – the use of chain blocks and temporary weld tacks NOT PERMITED.

所有公差应适用于正确支撑不受力的管线 – 不允许使用倒链和临时点焊。 6.3.4.7. All torque wrenches must be calibrated and rechecked as per the manufacturers’ specification.

按照厂家规范校正并复检所有的力矩扳手。

6.3.4.8. All wrenches/spanners must be suitable open ended / ring type. NO HOME MADE OR ADGUSTABE WRENCHES ARE TO BE USED NO PIPE CONNECTIONS.

所有的扳钳/扳手必须是合适的开口/梅花扳。管道接口不允许使用自制的或活动扳手

6.3.4.9. Hydraulic tensioning for all critical flanges or when stud/bolt diameter ≥25mm. This must be carried out by qualified (specialized) contractors. 直径大于等于25mm的螺杆/螺栓以及所有重要法兰的张紧都必须由合格的、专业的承包商来完成。 6.3.2.

Bolting procedure 拴紧程序

6.3.2.1. Insert two bolts diametrically opposite each other, and place one bolt halfway between these (on the underside for horizontal lines) to support the

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gasket. Engage all nuts.

直径方向相反地插入两个螺栓，再将一个螺栓半插入其间（水平线的下面）来支撑垫片。安装所有的螺母。

6.3.2.2. Insert the gasket and ensure that is positioned correctly between the two sealing faces. Hands tighten the nut.

如需垫片，插入垫片，并确保其位于两个密封面之间的正确位置。手动上紧螺母。

6.3.2.3. Insert and hand tighten all nuts and bolts taking care to not move gasket. If bolts do not fit through the bolts holes or interfere with the gasket inform construction supervisor.

插入并手动上紧所有的螺母螺栓，注意不要移动垫片。如果螺栓与螺栓或垫片尺寸不符或相互妨碍，应告知施工主管。

6.3.2.4. If bolt does not extend 1 thread past nut, inform construction supervision.

如果螺栓无法上紧到超出螺母一道丝扣时，告知施工主管。

6.3.2.5. If bolt extends more than 4 threads past nut, inform construction supervision.

如果螺栓无法上紧到超出螺母4道丝扣时，告知施工主管。

6.3.3. Torque tightening procedure 力矩上紧程序

6.3.3.1. Obtain the correct torque value for the flange type

不同类型的法兰选择正确的力矩值。

6.3.3.2. Set the torque wrench to 20% of the recommended torque and apply to flange bolts in a cross bolting sequence (figure 3)

将力矩扳手设定到要求力矩值的20%，按照十字顺序施加到法兰螺栓上。 6.3.3.3. Increase by 20% of the recommended torque and apply to flange bolts in a cross bolting sequence. Set the torque wrench to 100% of the recommended torque and apply to flange bolts in a inverse hour sequence. 将力矩值按要求值的20%后递增，按照十字顺序拧紧法兰螺栓。将力矩值设定到要求值的100%后按照逆时针顺序拧紧法兰螺栓。

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