KL1 15 HDD 3 Proposed

8/18/2019 KL1 15 HDD 3 Proposed

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Broadgate Engineering (M) Sdn Bhd EPCC OF NGDS TO KUALA LUMPUR FL STAGE 1/15, KUALA LUMPUR

1.0 INTRODUCTION

1.1 BRIEF OF WORK

2.0 PROPOSED PILOTING RECORD

3.0 PROPOSED PILOTING PROFILE DATA

3.1 PROPOSED PIPELINE DATA/PROPERTIES

3.2 PROPOSED CURVATURE DATA

4.0 CALCULATIONS

4.1 MAXIMUM DEPTH FROM ENTRY TO HORIZONTAL PITCH

4.2 MINIMUM HORIZONTAL LENGTH FROM ENTRY TO HORIZONTAL PITCH

4.3 MAXIMUM DEPTH FROM HORIZONTAL PITCH TO EXIT

4.4 MINIMUM HORIZONTAL LENGTH FROM HORIZONTAL PITCH TO EXIT

5.0 CONCLUSION OF PROPOSED PILOTING PROFILE

6.0 ATTACHMENTS

- PROPOSED PROFILE DRAWING

- SITE DATA PILOTING PROFILE RECORD

TABLE OF CONTENT


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1.0 INTRODUCTION

This document is submitted to Gas Malaysia Bhd (GMB) for reviewal and to obtain approval from

GMB to undertake the work of Horizontal Directional Drilling (HDD) for back-reaming and pipe-pulling

for the Gas Pipeline Construction at Kuala Lumpur FL Stage 1/15 (Sunway Velocity).

1.1 BRIEF OF WORK

The work involves the proposed HDD for NPS 8" steel feeder line CH 665.00 to CH821.00.

1.2 BRIEF OF SUBMISSION

This submission briefly outline the following:

i. Proposed Piloting Record

ii. Proposed Piloting Profile Data

iii. Proposed Curvature Data

iv. Calculationsv. Proposed Profile Drawing

The objective of this submission is to:

i. Obtain approval from GMB for back-reaming and pipe-pulling work based on the GMB

approved HDD piloting profile submission.

ii. Calculate and analyse the proposed Maximum Depth, Dmax1 and max2 and Minimum Horizontal

Length, L1 and 2 based on the proposed piloting profile and shall conform to GMB acceptance

criteria.

The acceptance criteria of the proposed piloting profile shall conform to the followings:

i. The proposed Maximum Depth, Dmax1 and max2 shall less than the GMB Maximum Depth,

Dmax1GMB and Max2GMB based on the GMB Minimum Bending Radius, RGMB.

ii. The proposed Minimum Horizontal Length, L1 and 2 shall more than the GMB Minimum

Horizontal Length, Lmin1GMB and min2GMB.


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2.0 PROPOSED PILOTING RECORD

ROD LENGTH 4.50 m ENTRY ANGLE = 11.00 %

ROD PITCH CURVATURE HORIZONTAL DEPTH FROM EXISTING PIPE DEPTH PIPE LEVEL DEPTH FROM

NO. LENGTH LENGTH ENTRY GROUND LEVEL FROM EGL FROM EGL EXIT

(%) (m) (m) (m) (m FROM MSL) (m) (m FROM MSL) (m)

0 11.00 4.50 0.00 0.00 38.45 0.00 38.45 1.00

1 11.00 4.50 4.47 0.49 39.63 1.67 37.96 1.49

2 10.00 9.00 8.95 0.94 39.61 2.10 37.51 1.94

3 9.00 13.50 13.43 1.34 39.61 2.50 37.11 2.34

4 8.00 18.00 17.92 1.70 39.61 2.86 36.75 2.70

5 7.00 22.50 22.41 2.02 39.63 3.19 36.44 3.01

6 6.00 27.00 26.90 2.28 39.64 3.47 36.17 3.28

7 5.00 31.50 31.39 2.51 39.65 3.71 35.94 3.51

8 4.00 36.00 35.89 2.69 39.66 3.90 35.76 3.69

9 3.00 40.50 40.39 2.82 39.66 4.03 35.63 3.82

10 2.00 45.00 44.89 2.91 39.65 4.11 35.54 3.91

11 1.00 49.50 49.39 2.96 39.65 4.16 35.49 3.96

12 0.00 54.00 53.89 2.96 39.65 4.15 35.49 3.96

13 0.00 58.50 58.39 2.96 39.64 4.15 35.49 3.96

14 0.00 63.00 62.89 2.96 39.63 4.14 35.49 3.96

15 0.00 67.50 67.39 2.96 39.62 4.12 35.49 3.96

16 0.00 72.00 71.89 2.96 39.60 4.11 35.49 3.96

17 0.00 76.50 76.39 2.96 39.58 4.09 35.49 3.96

18 0.00 81.00 80.89 2.96 39.57 4.07 35.49 3.96

19 0.00 85.50 85.39 2.96 39.56 4.07 35.49 3.96

20 0.00 90.00 89.89 2.96 39.64 4.15 35.49 3.96

21 0.00 94.50 94.39 2.96 39.73 4.23 35.49 3.96

22 0.00 99.00 98.89 2.96 39.80 4.31 35.49 3.96

23 0.00 103.50 103.39 2.96 39.91 4.42 35.49 3.96

24 -1.00 108.00 107.89 2.91 39.91 4.37 35.54 3.91

25 -2.00 112.50 112.39 2.82 40.02 4.39 35.63 3.8226 -3.00 117.00 116.88 2.69 40.06 4.30 35.76 3.69

27 -4.00 121.50 121.38 2.51 40.12 4.17 35.94 3.51

28 -5.00 126.00 125.87 2.28 40.17 4.00 36.17 3.28

29 -6.00 130.50 130.37 2.02 40.22 3.78 36.44 3.01

30 -7.00 135.00 134.86 1.70 40.27 3.52 36.75 2.70

31 -8.00 139.50 139.34 1.34 40.35 3.23 37.11 2.34

32 -9.00 144.00 143.82 0.94 40.42 2.91 37.51 1.94

33 -10.00 148.50 148.30 0.49 40.50 2.54 37.96 1.49

34 -11.00 153.00 152.77 0.00 40.57 2.12 38.45 1.00

35 -12.00 157.50 157.24 -0.53 39.45 0.47 38.98 0.47

Maximum depth: From entry (m) = 4.16 From exit (m) = 5.16


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ROD PITCH CURVATURE HORIZONTAL DEPTH FROM EXISTING DEPTH FROM PIPE LEVEL DEPTH FROM

NO. LENGTH LENGTH ENTRY GROUND LEVEL EGL FROM EGL EXIT

(%) (m) (m) (m) (m FROM MSL) (m) (m FROM MSL) (m)


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3.0 PROPOSED PILOTING PROFILE DATA

Min Bending Radius,R1 Min Bending Radius,R2

R1-Dmax1 R2-Dmax2

Entry Ground Level Ref Level2 Exit Point

α2Ref Level1 α1

Max Depth,Dmax1 Max Depth,Dmax2

α0

Horizontal Length,L1 Horizontal Horizontal Length,L2

Length,L0

Total Horizontal Length

3.1. PROPOSED PIPELINE DATA/PROPERTIES

Pipeline Material = Steel

Nominal Pipeline Size = 8"

Pipeline Wall Thickness = 7.90 mm

Pipeline Outer Diameter, Do = 219.1 mm

Pipeline Inner Diameter,Di = 203.3 mm

Pipeline Grade = Grade X-42

Pipeline Coating Type = 3 LPE

3.2 PROPOSED CURVATURE DATA

Horizontal Length,L1 = 49.39 m



Total Horizontal Length = 157.24 m

Entry Angle,α1 = 11.00 %

Exit Angle,α2 = -12.00 %

Entry Reference Level1 = 38.45 m

Entry Ground Level = 38.45 m

Maximum Depth,Dmax1 = 4.16 m

Exit Reference Level2 = 38.98 m

Exit Ground Level = 39.45 m

Maximum Depth,Dmax2 = 5.16 m


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4.0 CALCULATIONS

4.1 MAXIMUM DEPTH FROM ENTRY TO HORIZONTAL PITCH

Min Bending Radius,R1

R1-Dmax1

Entry Point Entry Reference Level1

α1 Ground Level

Maximum Depth,Dmax1

α0

Horizontal Length,L1

Minimum Bending Radius by GMB,RGMB = 1000 Do

RGMB = 219.10 m

Maximum Depth based on Minimum Bending Radius by GMB with Horizontal LengthL1 :Dmax1GMB

→ Horizontal Length,L1 = 49.39 m

→ RGMB = 219.10 m

Hence, R1 -Dmax1 = √(RGMB) - (L1)

= 213.46 m

Therefore, Dmax1GMB = RGMB - (R1 - Dmax1)

= 5.64 m

Proposed Maximum Depth,Dmax1 = 4.16 m

Since, Dmax1GMB > Dmax1, maximum depth proposed is ACCEPTABLE


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4.2 MINIMUM HORIZONTAL LENGTH FROM ENTRY TO HORIZONTAL PITCH


R1-Dmax1

Entry Point Entry Reference Level1

α1 Ground Level

Maximum Depth,Dmax1

α0



RGMB = 219.10 m

Minimum Horizontal Length on Minimum Bending Radius by GMB with Maximum Depth,Dmax1: Lmin1GMB

→ Maximum Depth,Dmax1 = 4.16 m

→ RGMB -Dmax1 = 214.94 m

Therefore, Lmin1GMB = √(RGMB)2 - (RGMB - Dmax1)

2

= 42.48 m

Proposed Horizontal Length,L1 = 49.39 m

Since, L1 > Lmin1GMB, horizontal length proposed is ACCEPTABLE


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4.3 MAXIMUM DEPTH FROM HORIZONTAL PITCH TO EXIT


R2-Dmax2

Entry Reference Level2 Exit Point

Ground Level α2

Max Depth,Dmax2

α0



RGMB = 219.10 m

Maximum Depth based on Minimum Bending Radius by GMB with Horizontal Length,L2 :DmaxGMB

→ Horizontal Length,L2 = 53.86 m

→ RGMB = 219.10 m

Hence, R2 -Dmax2 = √(RGMB) - (L2)

= 212.38 m

Therefore, Dmax2GMB = RGMB - (R2 - Dmax2)

= 6.72 m

Proposed Maximum Depth,Dmax2 = 5.16 m

Since, Dmax2GMB > Dmax2, maximum depth proposed is ACCEPTABLE


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4.4 MINIMUM HORIZONTAL LENGTH FROM HORIZONTAL PITCH TO EXIT


R2-Dmax2

Entry Reference Level2 Exit Point

Ground Level α2

Max Depth,Dmax2

α0



RGMB = 219.10 m

Minimum Horizontal Length on Minimum Bending Radius by GMB with Maximum Depth, Lmin2GMB

→ Maximum Depth,Dmax2 = 5.16 m

→ RGMB -Dmax2 = 213.94 m

Therefore, Lmin2GMB = √(RGMB) - (RGMB - Dmax2)

= 47.25 m

Proposed Horizontal Length, L2 = 53.86 m

Since, L2 > Lmin2GMB, horizontal length proposed is ACCEPTABLE

5.0 CONCLUSION OF PROPOSED PILOTING PROFILE

Based on the calculation, all acceptance criteria are met.


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6.0 ATTACHMENTS


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SITE DATA PILOTING PROFILE RECORD

Chainage :

Date :

ROD PITCH PIPE DEPTH UTILITY DEPTH

NO. FROM EGL FROM EGL REMARK

(%) (m) (m)

0

1 0.3m TNB Cable

2 0.5m Water Pipeline

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

2425

26

27

28

29

30

31

32

33

34

35

HDD Supervisor : BESB QC : GMB Rep :

Date : Date : Date :


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SITE DATA PILOTING PROFILE RECORD

Chainage :

Date :

ROD PITCH PIPE DEPTH UTILITY DEPTH

NO. FROM EGL FROM EGL REMARK

(%) (m) (m)

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

6061

62

63

64

65

66

67

68

69

70

HDD Supervisor : BESB QC : GMB Rep :

Date : Date : Date :


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Documents

KL1 15 HDD 3 Proposed