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Ms for-mechanical-piping-system-installation-work

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  • 1. Saigon M&C Tower Project Method Statement For Fire Stopping Installation Mechanical Piping: A. PPR Pipes & Fittings Installation. B. uPVC Pipes & Fittings Installation. C. Cast Iron Pipes & Fittings Installation. D. Ductile Iron Pipes & Fittings Installation. E. Steel Pipes & Fittings Installation. F. Copper Pipes Installation.- 12-03-09 FIRST ISSUE C.T.P -.-.- L.Q.K J.R.P Page 2
  • 2. Saigon M&C Tower ProjectMethod Statement For Fire Stopping General: Items: - The Method Statement For Mechanical Piping System Installation Work. Aim: The objectives is to describe Plumping works associated with installation of internal pipes in compliance with the contract specification, approved shop drawings, combine and coordinated all services and structural penetration shop drawings. Scope of Works: This method statement covers work related to all Mechanical works of the SAIGON M&C TOWER Project. Installation: Page 3
  • 3. Saigon M&C Tower ProjectMethod Statement For Fire Stopping A. PPR Pipes & Fittings Installation: 1. Adhesive Bonding Joint For PP-R Pipes and Fititng a. Cutting of the pipe - Mark pipe according to the necessary length. - Cutting the pipe follow the marking. Cut the pipe at right angles to the pipe axis. Cutting of the pipe b. Heating of pipe and fitting - Push the end of the pipe up to the welding depth into the welding tool. - After the stipulated heating times quickly remove pipe and fitting from the welding tool (See table 1). - Join them immediately until the marked welding depth is covered by the PP-R bead from the fitting. Heating-up of the pipe and fitting Page 4
  • 4. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Joining and fixing Pipe and fitting are aligning Table1: The fusion data. Pipe external - d Welding depth Heating time Welding time Cooling time (mm) (mm) (sec) (sec) (min) 16 13 8 4 2 20 14 8 4 2 25 15 11 4 2 32 16.5 12 6 4 40 18 18 6 4 50 20 27 6 4 63 24 36 8 6 75 26 45 8 8 90 29 60 8 8 110 32.5 75 10 8 125 40 90 10 8 Page 5
  • 5. Saigon M&C Tower ProjectMethod Statement For Fire Stopping c. Weld in saddles - Weld in saddles are available for pipe outer diameter of 40, 50, 63, 75, 90, 110, 125, 160, 200 and 250 mm. The maximum sensor well diameter is specified in the following table 2. - Weld in saddles are used for: • Branch connections in existing installations. • The substitution of a tee. • Branch connections in risers. • Sensor wells, etc. Weld-in saddle detail. - Drill through the pipe wall at the intended outlet point by using the drill. - Insert the heating tool on the concave side of the weld-in saddle tool into the hole drilled in the pipe wall until the tool is completely in contact with the outer wall of the pipe - Fusing the weld-in saddle with the pipe the outer surface and the pipe inner wall the connection reaches highest stability. Drilling through the pipe wall Page 6
  • 6. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Table2: The saddles data. Page 7
  • 7. Saigon M&C Tower ProjectMethod Statement For Fire Stopping The welding tool is inserted into the pipe wall … … heating-up of the elements Joining Weld-in saddle finished d. Butt welding Pipes and fittings are fused, as explained below by butt welding ( pipe dimension 160, 200, and 250mm). - Cut pipe into required length - Plastic pipes are aligned and fixed by means of the clamping elements - Push The pipes onto the heating place with a defined adjusting pressure. - When heating time has expired, divide the machine slide, remove heating element quickly and join the pipes (by putting both parts of the slide together). - The welded connection can be unclamped the welding process is finished. The parts to be welded are fixed and aligned respectively Page 8
  • 8. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Positioning of heating element Divide the machine slide, remove heating element. Join the pipe, cool down under pressure. Page 9
  • 9. Saigon M&C Tower ProjectMethod Statement For Fire Stopping e. Repair - Damaged pipes may be repaired by mean of fusion. - In addition to this the offers the possibility of the pipe repair stick. - The installation: same step for weld-in saddle. Heat-up Install repair stick and cutting 2. Pipe installation a. Exposed pipes Concrete Slab Anchor Hanger rod PP-R Pipe Pipe clamp Sleeve Wall Detail of exposed horizontal PP-R pipe installation Page 10
  • 10. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Concrete Slab Anchor Hanger rod Sleeve Pipe clamp PP-R Pipe Support Sleeve PP-R Pipe Concrete Wall Slab Detail of exposed vertical PP-R pipe installation Picture for illustrating of PP-R Pipes installation Page 11
  • 11. Saigon M&C Tower ProjectMethod Statement For Fire Stopping b. Concealed pipes - Mark location of pipes and outlet on walls according to approved shop drawings. - After layout has been established, marking the pipes route on the brick wall with two marked lines according to installed pipes size (Follow table 3). Table 3: Wall Opening Size for PP-R Pipes Pipe size Opening Depth Item (d) mm (b) mm (t) mm 1 20 60 35 2 25 60 35 3 32 100 45 4 40 100 50 5 50 150 65 6 60 150 80 PP-R Pipe Cutting line inlet PP-R Pipe Inlet PP-R Pipe PP-R Pipe Cutting line Backfill (by other) End cap PP-R Pipe (cover) outlet Detail of concealed PP-R pipe installation. Page 12
  • 12. Saigon M&C Tower ProjectMethod Statement For Fire Stopping PP-R Pipe Cutting line Mortar hole pipe Outlet and End cap Picture for illustrating of concealed PP-R pipe installation. B. uPVC Pipes & Fittings Installation: 1. Adhesive Bonding Joint For uPVC Pipes and Fititng Zero point Stopper PVC socket PVC pipe Swell layer by Adhesive (0.1-0.2 mm) PVC socket PVC pipe Detail of Installation uPVC fitting Page 13
  • 13. Saigon M&C Tower ProjectMethod Statement For Fire Stopping 2. Pipe installation a. Exposed pipes: Concrete Slab Anchor Hanger rod uPVC Pipe Fitting U-bolt Pipe clamp uPVC Pipe Sleeve Sleeve Wall Detail of exposed uPVC pipe installation uPVC Pipe Fitting Pipe clamp uPVC pipe Support Rubber rope Pipe strap Picture for illustrating of exposed uPVC pipes installation Page 14
  • 14. Saigon M&C Tower ProjectMethod Statement For Fire Stopping b. Concealed pipes: Table 4: Wall Opening Following Pipe Size Item Pipe size (d) Opening (b) mm Depth (t) mm 1 32A 100 45 2 40A 100 50 3 50A 150 65 4 80A 200 100 5 100A 200 120 Concrete slab Concrete slab Cutting line Cutting line uPVC Pipe Wall uPVC Pipe & Fitting End cap (cover) Backfill Wall (by other) Drain Drain Detail for Concealed of uPVC pipes End cap uPVC pipe Mortar Hold pipe Picture for illustrating Page 15
  • 15. Saigon M&C Tower ProjectMethod Statement For Fire Stopping C. Cast Iron Pipes and Fittings Installation 1. Cutting of Pipe - All cutting must be done in warehouse or in designated areas at each floor. All cutting must not be done at work area. - Cutting angle must be right angle. - Pipe shall be cut by power hacksaw, circular cutting machine with abrasive wheel, hand hacksaw or square end sawing vice only. - Inside edges shall be reamed smooth by reamer or sand paper. Example for Cutting pipes 2. Coupling Joint a. Pipe with Pipe 1. Push the supplied complete connector on to the pipe end right up to the middle spacing ring of the seal. 2. Turn over the open half of the sealing collar. Page 16
  • 16. Saigon M&C Tower ProjectMethod Statement For Fire Stopping 3. Install the next pipe or formed part flush with the spacing ring and fold back the turned over half of the collar. 4. Place the clamping sleeve around the collar. 5. Alternatively tighten the two clamping screw uniformly and hard tight. The guiding and threaded plates of the clamp must come together parallet to avoid any deformations. Page 17
  • 17. Saigon M&C Tower ProjectMethod Statement For Fire Stopping b. Pipe with Fitting 1. Push the supplied complete connector on to the pipe end right up to the middle spacing ring of the seal. 2. Push the pipe end from the other end into the connector. 3. Firmly tighten the hexagon socket screw with a socket spanner, hard ratchet or impact screwdriver, if possible to the point where the two clamping jaws come together. Picture for illustrating install complete Page 18
  • 18. Saigon M&C Tower ProjectMethod Statement For Fire Stopping D. Ductile Iron Pipes and Fittings Installation Bolt and Nut Flange D.I Pipe D.I Pipe Detail Flange joint of D.I Pipe with Pipe Bolt and Nut D.I Pipe Flange Rubber rope D.I Fittng Detail Flange joint of D.I Pipe with Fitting D.I Pipe Concrete Slab Anchor Sleeve Hanger rod U-bolt Flange D.I Fittng D.I Pipe Angle Steel Detail for Installation D.I pipe . Some picture for illstrating Page 19
  • 19. Saigon M&C Tower ProjectMethod Statement For Fire Stopping E. Steel Pipes and Fittings Installation 1. Screw Joint: For pipes size less than 65A Useful thread (see note 1) Washout Useful thread Threads A (see table 5) End face of internally thread parts Useful thread (see note 1) A (see table 5) Note 1: The useful thread of the internally threaded part is to be not less than 80% of the length. Detail of Screw Table 5: Size of Screw (BS 21:1985) Minimum lengths A in turns of thread (see note) for: Thread size Internal thread with Internal thread with extreme designation extreme plus tolerance Internal thread of basic size minus tolerance (gauge diameter) (maximum diameter) (minimum diameter) mm mm mm 1/16 8⅛ 6⅞ 5⅝ (7.4) (6.2) (5.1) 1/8 8⅛ 6⅞ 5⅝ (7.4) (6.2) (5.1) 1/4 8¼ 7 5¾ (11.0) (9.3) (7.7) 3/8 8½ 7¼ 6 (11.4) (9.7) (8.0) 1/2 8¼ 7 5¾ (15.0) (12.7) (10.4) 3/4 9 7¾ 6½ (16.3) (14.1) (11.7) 1 8¼ 7 5¾ (19.0) (16.2) (13.3) 1¼ 9¼ 8 6¾ (21.4) (18.5) (15.6) 1½ 9¼ 8 6¾ (21.4) (18.5) (15.6) 2 11⅛ 9⅞ 8⅝ (25.7) (22.8) (19.9) Page 20
  • 20. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Concrete Slab Anchor Hanger rod Pipe clamp Steel pipe Steel fitting Detail installation for thread steel pipe and fitting 2. Welding Joint: For pipes size 65A and over Bevel angle Pipe thickness Distance between Pipes Detail for Chamfer of groove weld Weld point Pipe thickness Details Finish of welding seam More than t Flange X: (mm) Pipe thickness Weld point t (mm) Steel Pipe 1mm shorter than X Details of welding Joint for Flange Page 21
  • 21. Saigon M&C Tower ProjectMethod Statement For Fire Stopping Steel Pipe Concrete Slab Anchor Sleeve Hanger rod Welding U-bolt point Steel Fittng Steel Pipe Angle Steel Detail Installation welding pipes 3. Welding joint for branch pipes: For pipe size less than 65A. Table 6. Saddle fitting connection combination Branch pipe diameter Main pipe diameter Ø (mm) Ø (mm) 40 50 65 80 100 125 150 Hole size Ø (mm) 15 27 20 33 25 40 32 48 40 54 50 o 66 o: to limit used : to allow used Hole on pipe Spot weld (see table 6) Saddle fitting Main pipe Main pipe 1. Making and Cut hole 2. Insert saddle and Spot weld Branch pipe Saddle fitting Branch pipe Seam weld Main pipe Main pipe 3. Welding for certain 4. Insert branch pipe by screw Detail of welding joint for branch pipe. Page 22
  • 22. Saigon M&C Tower ProjectMethod Statement For Fire Stopping F. Copper Pipes and Fittings Installation 1. Application of Flux and Insert No applicaion area of Flux D = 8 - 15 mm: about 3 mm D = 5/8B, 20 - 32 mm: about 5 mm Copper pipe Copper pipe Flux must apply only joint area Too much Flux cause pipes to corrosion Detail for Application of Flux 2. Application of Solder Table 7. Necessary Length of Solder Pipe Size 8 10 15 5/8B 20 25 32 Necessary Length (mm) 6 8 13 22 30 60 90 Maximum Length (mm) 8 12 19 32 42 82 123 * Diameter of solder is 2mm. If other diameter is used, Change the length in accordance with this table. Flame Copper pipe Copper pipe Solder Solder must be melted by the heat of surface. Apply solder to opposite side of heated position. Detail for Application of Solder Page 23

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