CONSTRUCTION MEASURES OF SURROUND DRILLING 04 CW DN2600 PIPELINES

Nochu

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Tham gia
15/10/20
Bài viết
117
Điểm thành tích
16
Tuổi
21
Nơi ở
Hồ Chí Minh
TABLE OF CONTENTS

1. GENERAL INTRODUCTION 3


1.1. PROJECT OVERVIEW 3

1.2. DOCUMENTATION PURPOSE 3

1.3. LEGAL DOCUMENTS 3

1.4. DEFINITIONS AND Acronyms 3

2. PREPARATION OF CONSTRUCTION 4

3. CONSTRUCTION HUMAN RESOURCES 4

4. CONSTRUCTION EQUIPMENT 5

5. TEMPORARY WORKS FOR CONSTRUCTION 6

6. DRILLING CONSTRUCTION PROGRESS 7

7. CONSTRUCTION MATERIALS 7

8. DEVELOPMENT, DISTANCE TO US SURFACE CONSTRUCTIONS 7

9. CONSTRUCTION METHODS 7


9.1. SURVEY 7

9.2. MOBILE MACHINERY, EQUIPMENT AND HUMAN RESOURCES 8

9.3. ROAD SURFACE OF DRILLING AREA 8

9.4. PREPARATION OF DRILLING WORK 8

9.8. CW DN2600 TUBE PULLING WORK 12

9.9. CLEANING AND REFUNDING WORK 14

10. MEASURES Environmental sanitation, fire prevention and SITE SECURITY

10.1. GENERAL RULES 14

10.2. security 15

10.3. ENVIRONMENTAL SANITATION 15

10.4. FIRE FIGHTING, INTERNAL TRAFFIC SAFETY 15

10.5. WORKER SAFETY 17

CONSTRUCTION-MEASURES-OF-SURROUND-DRILLING-04-CW-DN2600-PIPELINES.jpg

1. GENERAL INTRODUCTION

1.1 PROJECT OVERVIEW


Name of the project: Drilling underground jacking 04 lines of reinforced steel pipes DN2800 and pulling construction of 04 lines of CW DN2600 pipelines.

Belonging to the project: Vung Ang II Thermal Power Plant

Type of project, grade of work: Group B projects, Water pipeline works, Grade II.

Location: Ky Anh district, Ha Tinh province.

1.2 DOCUMENTATION PURPOSE

The purpose of this document is to provide a method for the Contractor to implement and control the construction of 4 underground CW DN2600 pipelines across the road.

1.3 LEGAL DOCUMENTS

Construction Law No. 50/2014/QH 13 dated June 18, 2014 of the 13th National Assembly, 7th session;

Law on Environmental Protection No. 72/2020/QH14 passed on January 17, 2020 by the 14th National Assembly;

Decree No. 15/2021/ND-CP dated March 3, 2021 of the Government detailing a number of contents on construction investment project management;

Decree No. 06/2021/ND-CP dated January 26, 2021 of the Government detailing a number of contents on quality management, construction and maintenance of construction works;

Decree No. 11/2010/ND-CP dated February 24, 2010 of the Government providing for the management and protection of road traffic infrastructure;

Circular No. 50/2015/TT-BGTVT dated September 23, 2015 of the Ministry of Transport on "Guiding the implementation of a number of articles of Decree No. 11/2010/ND-CP dated February 24, 2010.

1.4 DEFINITIONS AND ACRONYMS

Investor

Vung Ang II Thermal Power Company Limited

Project

Vung Ang II Thermal Power Plant

Contractors

DHI-SCT . Joint Venture

Package

Design, Fabrication and Construction, Installation


HSE : Health, Safety and Environment

BDA : Project department

CBAT : Safety Officer

CBKT : Technical staff

MMTB : Devices

HT : System

2. PREPARATION OF CONSTRUCTION

The preparation work has been carried out according to the construction item of the whole pipeline.

3. CONSTRUCTION HUMAN RESOURCES

List of personnel participating in underground drilling

No.

First and last name

Date of birth

Identity card number

Home town

Work

1​

Nguyen Van Thanh

6/5/1970

038070006601

Thanh Hoa

Director

2​

Tran Anh Tuan

13/06/1972

273136899

Ha Tinh

Deputy commander

3​

Đang Xuan Dien

7/10/1961

024716077

Nghe An

Deputy commander

4​

Đang Minh Nhut

1986

025748413

Đong Thap

Deputy commander

5​

Đo Thi Kim My

17/05/1997

291141831

Tay Ninh

Secretary

6​

Nguyen Ngoc Thanh

20/03/1992

173754257

Thanh Hoa

Captain

7​

Nguyen Tien Long

27/06/1998

175023765

Thanh Hoa

Technical staff

8​

Tran Manh Sung

30/09/1976

033076001982

Hung Yen

Drilling machine driver

9​

Au Le Hai

1973

312381178

Bac Giang

Drilling machine driver

10​

Duong Van Minh

19/04/1987

281286071

Nghe An

Drilling Assistant

11​

Nguyen Thanh Hung

03/09/1972

038072003565

Thanh Hoa

Drilling Assistant

12​

Nguyen Van Sang

12/081968

261623922

Thai Nguyen

Drilling Assistant

13​

Vo Xuan Oanh

30/10/1965

181484282

Nghe An

Drilling Assistant

14​

Đoan Van Dong

1/12/1996

251064894

Lam Đong

Drilling Assistant

15​

Duong Van Dai

10/10/1999

187766885

Nghe An

Drilling Assistant

16​

Nguyen Ngoc Noi

20/11/1970

172156753

Thanh Hoa

Drilling Assistant

17​

Phan Van Truc

20/03/1977

261221690

Thai Nguyen

Drilling Assistant

18​

Pham Minh Tuan

19/05/1976

320940871

Ben Tre

Technical staff

19​

Đao Minh Tuan

29/08/1995

362427232

Can Tho

Technical staff

20​

Nguyen Minh Phung

09/08/1995

301600511

Long An

Technical staff



4. CONSTRUCTION EQUIPMENT

List of construction machinery and equipment:

No.

Types of machinery and equipment

Amount

Own/Rent

Note

1

Crane 50 tons

01

  

2

Generator 20 kVA

01

  

3

Excavator 1 m3

02

  

4

Welding machine A300

5

  

5

Grinding and cutting machine Ø150

4

  

6

Oil air compressor (8m3/min)

01

  

7

Hand drill

04

  

8

Hole Drilling Machine

01

  

9

Pressure Compressor + Recorder

01

  

10

HDD underground pipe drilling machine

01

 

GS-700 -LS

11

Drilling fluid mixer 2000L

01

  

12

Drill head locator

01

  

13

Laser distance meter

01

  

14

Depth gauge

01

  

15

walkie talkie

03

  

16

Tank truck carrying clean water

01

  

17

Concrete tank truck

01

  

18

Ground-penetrating radar detector

01

  

19

Guide drill rod

20

  

20

Drill head and extension shallow drill head

07

  

21

Hoist 5-10 tons

01

  

22

Mother of pearl / lotus leaf pile driving machine

01

  
Technical parameters of drilling machine GS - 700 – LS:

No

Parameters

Value

1​

Thrust force

700KN​

2​

Traction

1400KN​

3​

Torque

30000Nm​

4​

Engine power

199KW​

5​

Max drill diameter

1500mm​

6​

Maximum drilling length

900m​


5. TEMPORARY WORKS FOR CONSTRUCTION
Minh Phuong will transport 01 10 ft container containing equipment, construction tools and other works located at the gathering yard in the construction area.​
Office at the construction site:​
Housing of officials/workers will be rented houses in construction areas about 6 km.​
Use 20kVA generator power supply to weld pipes. Water source for drilling is provided by tank trucks and mobile water tanks.​
6. DRILLING CONSTRUCTION PROGRESS
Construction progress is calculated from the date the Investor receives the construction approval permit.​
7. CONSTRUCTION MATERIALS
The list of main materials for construction of 04 sections of underground pipelines across the road, each 39m long pipeline section includes the following:​

No

Materials and equipment

Std

Facing

Sch

inch

Unit

Amount

1​

CW pipe DN2600

 

BE

40

 

m

156

2​

DN2800 reinforced steel pipe

    

m

156



8. DEVELOPMENT, DISTANCE TO US SURFACE CONSTRUCTIONS

The depth of burying pipes when crossing the road is determined based on API RP 1102, the input parameters are the wall thickness of the pipe, the depth of burying the pipe through the road, the parameters of the road and the operating vehicle. Test the stress in the pipe against the allowable stress and the fatigue of the weld against the fatigue limit of the weld to ensure that the pipe is not damaged or destroyed during operation.​

 

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