Utility Specialists in Hong Kong- 我以為UU – Utility Undertakers (Utility companies) CONCEPT OF...

1

Utility Specialists

in Hong Kong-

我以為!實情係!

Ir Dr. King Wong (黃敬博士、工程師)

Executive Director, Community & Construction Professionals’ Development Centre (CCPDC)

社區、建造及工程專業發展中心

Past Chairman, Safety Specialists Committee, HKIE(香港工程師學會)

Chairman of Qualification & Membership Committee-HKIUS (香港管綫專業學會)

Secretary General, Hong Kong Utility Research Centre, HKURC (香港管綫管理研究中心)

Executive Director, Utility Training Institute (UTI管綫學院)

Hong Kong Institute of Utility Specialists 香港管綫專業學會

CONTENT

1. US (Utility Specialist) VS CP (Competent Person)

2. What is Utility Survey?

3. Why Utility Survey?

4. Consequence of inaccurate Utility Survey?

5. How to have good Utility survey?

6. How and Why HKIUS members can help?

7. Recommended survey approach

8. Project 348-The Way to success

9. Other Information

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我以為!

管綫探測衹需符合CAP406H要求

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實情係!

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CAP406H外有:

CAP51B,氣體安全條例;

Telecommunication Ordinance,電訊法規

Water Ordinance,水務法規

Contract requirements on Pre-construction

utility Survey-基建合約要求等.

但衹有CAP406H有指定人士(CP)

我以為!

掃雷做得唔準唔緊要,因為有Trial Pit攪掂

5

實情係!

6

嚴重誤差可導致封錯路開錯Pit,導致嚴重延誤.

LD,低分,成本上漲,官司等隨之而來.

更重要嘅係????????

後果!

7

8

PROFESSIONAL?

我以為!

CP (合資格人士)係可以勝任為US (管綫專業監理員, 管綫專業監理師,管綫專業監理師(RPUS))

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實情係! 比較項目 CP(合資格人士) US(管綫專業監理師)

規章 CAP406H HKIUS入會要求,社會認定,國際認受

最低入職教育要求

沒有 中學(至31.03.2013)

文憑(01.04.2013起)

培訓 11-14小時 70小時起

培訓內容 , CICTA亦有提及煤氣喉管

所有地下設施

標準 CAP406H PS, MS, WP, Guideline, Training manual

準繩度要求 並無數據支持 百分九十資料誤差不超越165mm或0.1D

經驗 半年 3年(OMHKIUS), ５年(MHKIUS)

持續進修要求 沒有 每年卅五小時,其中十小時安全有關

持續教育 可參考US 文憑,專業文憑(UTI),學位 (PolyU)

晉升途徑 沒有

或可申請AMHKIUS (助理管綫專業監理員 )

管綫專業監理員 (OMHKIUS)

管綫專業監理師 (M/FHKIUS)

管綫專業監理師 (RPUS)

10

我以為!

US report = CP Report

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實情係!

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US=Utility Survey管綫探測包括

CP report有

水 Cable Alignment Record

(Passive無源Survey)

電 Trial Pit試孔Supervision

(CP on Site with photos)

煤 CP Report (with Active有源Detection on

each cable)

渠 若做US時以CP身份進行亦衹可作無源Cable Alignment Record

電訊 不可作為CP report

交通等廿多種設施

1. WHAT IS UTILITY SURVEY(何為管綫測量)?

Utility Surveys are surveys to identify conditions,

location, durability, etc of utilities and utilities

related features.

To identify unchartered objects such as

boulders, concrete blocks, tanks by specific

survey methods.

There are many to do including data

management, personnel training, quality

control and standardization.

Location, Condition, Management

2. WHY UTILITY SURVEY

a. Statutory requirements (Cap51B, Cap406H,

Telecom, Water Ordinances)

b. Contract Requirements

c. High Living Standards and less disturbance to

the public

d. To achieve good work progress with less

incidents

e. Organization reputation

f. To save social costs

14

HONG KONG INSTITUTE OF UTILITY

SPECIALISTS (HKIUS)-CPD REQUIREMENTS

Individual Members

Achieve not less than 35 hours of CPD learning in

every calendar year or not less than 70 hours

within two consecutive years, 10 hours of which

shall be relevant to safety issues

15

Approved by Labour Department that Fellow Members, Manager Members

and Operative Members of HKIUS could be issued with a relevant certificate

for the construction industry under section 6BA(4) of the Factories and

Industrial Undertakings Ordinace (“the Ordinace”) as the Commissioner for

Labour Department is satisfied that the safety training (“the training”)

required for qualifying for such membership is of a standard not less than the

relevant safety training course required under section 6BA of the Ordinace.

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HONG KONG INSTITUTE OF UTILITY

SPECIALISTS (HKIUS)-CPD REQUIREMENTS

Corporate Members

Annual renew

Job reference

Equipment requirement

Safety requirements

Management Training

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5. HOW AND WHY HKIUS MEMBERS CAN

HELP?

a. Proven Track records

b. Well established Standards

c. Internal Audit System

d. Well acceptance in the market

e. Leading in the world

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STANDARDIZATION

More detailed description & more Photos example for defects/features in conduit More samples: sample forms, sample photo, video, report, etc., which made it easier to understand. Structural Performance Grade (SPG), which is overlooked in pervious version, is now taken into account.

HKCCEC 2007

HKCCEC 2009

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STANDARD DESIGNED FOR HONG KONG

Work Branch,

Development Bureau

Code of Practice on

Monitoring and

Maintenance of

Water-Carrying Services

Affecting Slopes (2006)

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STANDARD DESIGNED FOR HONG KONG

Hong Kong Institute of

Utility Specialists (HKIUS) A. 管綫狀況評價(排水) Conduit Condition Evaluation and Man-Entry

Survey(CCTV & ME)

B. 沙井狀況評價 Manhole Internal Condition Survey

C. 管綫測量 Utility Survey (Pipe Cable Locator Survey, PCL)

D. 漏水監控 Water Leakage Detection and Control

E. 斜坡管道測漏 Advanced Leakage Detection of Buried Water Carrying

Services Affecting Slopes

NEW PUBLICATIONS-PAMPHLETS

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NEW PUBLICATIONS-GUIDELINES

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NEW PUBLICATIONS-PS

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NEW PUBLICATIONS-MS

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NEW PUBLICATIONS-WP

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“Utility Survey” included as a course in Applied

Learning in Senior Secondary Curriculum;

Utility Management and Applications (管線管理專業技術應用)

Co-organized by UTI & The University of Hong Kong

or Hong Kong Polytechnic University;

Students will be equipped with training on

theoretical and practical basis.

STANDARDIZATION OF TRAINING (RECOGNIZED

BY HKIUS)(標準培訓)

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STANDARDIZATION OF TRAINING

(RECOGNIZED BY HKIUS)(標準培訓)

CICTA-Cable and gas pipe location

IVE(Haking Wong)-Cable Location

PolyU-BSc (Utility Survey & Mnaagement), PhD Thesis-GPR

Survey)

HKU (MSc Thesis-Utility Safety)

UTI-Foundation/Professional Cert, Foundation/Professional

Dip, CPD, Seminars, Visits, Publications

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證書

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改善管綫安全及管理之建議

1. 加強專業管綫團體的認受性

Synergis Management Services Limited The survey shall be conducted by a qualified member of Hong

Kong Institute of Utility Surveyors in Conduit Condition

Evaluation Discipline (O/MHKIUS-CCE(CCTV))

CCTV Survey shall be carried out by MHKIUS (CCE-

CCTV) with at least 5 years experiences and relevant

training provided locally.

WORLDWIDE RECONIZATION

International Institute of Utility Specialists

國際管綫專業學會

Based in Hong Kong (may be the first

international professional body based in HK)

Lead by Hong Kong at the moment.

Want to maintain?

Need your help!

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TRAINING FOR SURVEYORS FROM MALASYIA

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YOUTH DEVELOPMENT

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RECENT DEVELOPMENT

Social Status

Community & Construction

Professionals’

Development Centre

(CCPDC)

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GISl Database

UU Individual database

UU Individual database

Control Center

UIUs

Utility

Detection

Teams

Firewall

Information

(Verified)

Real Time Data

Exchange

Concept of UIC

Other Record Provider

Eg. EMPQS

UIU – Utility Information User (Government departments, Consultants, contractors, planners etc)

UU – Utility Undertakers (Utility companies)

CONCEPT OF PROPOSED CENTRALIZE UIC (分享平台)

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EMS-ID MARKING SYSTEM WITH GPS

APPLICATION

iD

Marker

GPS Receiver PC

THE UTILITY SPECIALISTS

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2008/4/22

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2008/4/22

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2008/4/22

2008/4/22

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7. RECOMMENDED SURVEY APPROACH

How accurate results are located?

3T, 4R, *P

PS, MS, WP

Guideline

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42

Collect relevant information

(e.g. record plan) Observe surface installations

Safety precautions (PPE, TTA) Qualified Personnel

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Passive detection

Active detection

Marking

ON OFF H

z

Trace Frequency

Fault/Tone

Ref

Volume Depth/Current Gain Adjust

DynatelTM 2273

Locate Ok

I cm

Depth measurement

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Quality control Topo / total station

Report with drawing

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Propose trial pit location for verification IF

NECESSARY/REQUESTED BY CLIENT. Verify the alignment by

signal clamping

Update the drawing for

final reporting.

9. PROJECT 348-THE WAY TO SUCCESS

三世發項目

Dr. King Talk Show-2011

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3T

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交易Trade

信任Trust

嘗試Trial

4R

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合適人選

(Right Person)

合適儀器(Right

Equipment)

合適準備(Right

Preparation)

合理價錢

(Right Price)

8P/9P

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規劃

•規劃 (Plan), 主動 (Proactive),

•正面 (Positive)

執行

•專業 (Professional), 進度

(Progress), 耐性 (Patience)

檢討 •承諾 (Promise), 盈利 (Profit)

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PROSPECTS OF UTILITY PROFESSIONS

Demand for maintenance and protection The demand for maintenance and protection of various

kinds of public utilities is greater than supply Utility Survey plays an important role

Market of Utility Surveys Contracts related to utilities work has tremendous

increase Eg. Existing Utility Professionals can only afford half of

works (Slopes with high risk) which means a large amount of personnel is needed

Other government organizations, such as WSD, DSD, TD, HD and private organizations would also invite utility professionals to do utility surveys, maintenance and protection works

Demand for personnel Lack of trained personnel in the industry

PROSPECTS OF UTILITY PROFESSIONS

51 (經濟日報, 23/6/2006)

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PROSPECTS OF UTILITY PROFESSIONS

FUTURE DEVELOPMENT

With the development we have had in the last few

years, we are confident that HKIUS will be developed

as a professional body in its 10th Anniversary.

At the mean time, HKIUS will continue to work with

government and non-government organizations on the

professionalism of our members and their status in the

society.

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Thank you for your kind Attention

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NEW TECHNOLOGY

IDMS(綜合資料管理系統)

(Integrated Data Management System)

2008/4/22

6. NEW TECHNOLOGY – INTELLIGENT MARKING

SYSTEM (智能標纖系統)

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TRANSMITTER RECEIVER

Off

On

DynatelTM

2273Trace

Output Level

ACCESSORY COMPARTMENT

Color Type Color Type

Telephone Waste water

Water CATV

Gas General

Power

STANDARD MARKER FREQUENCIES 不同頻率的電子標識器

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2008/4/22

EMS-ID MARKING APPLICATIONS

58 Ref: HKIUS-GEN-009

For Gas pipe without tracer wire (mini marker)

For bundle of cables (iD Ball Marker)

THE IMPORTANCE OF CPD TO PROFESSIONAL

INSTITUTE AND ITS MEMBERS

Established in 2002

First EC commenced on 1st April, 2003

With an aim to promote and advance the

knowledge and practice of underground utility

services

Maintenance of a high standard of professional

qualification in utility survey and specialist

industries

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INTRODUCTION OF HKIUS

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-To promote and advance the knowledge and practice of underground utility survey profession,

and to create and maintain a high standard professional qualification;

推廣及促進地下管綫測量專業知識

-To provide an advisory service on underground utility surveys for members of HKIUS and

members of the public in general;

為會員及公眾提供地下管綫測量諮詢服務

-To facilitate exchange of opinions with other professional bodies on underground utility survey;

促進與業內專業團體交流

-To help maintaining reasonable post-service standard in underground utility survey industry for

both members and non-members;

建立及維持高水準的專業資格及合理售後服務標準

-To build and develop the role and status of underground utility survey profession in the

community.

建立及發展業界在社會上的角色和地位

-To cooperate and confer with, or otherwise assist and advise, government departments, quasi-

governmental organzations, public utilities organizations, universities, colleges and other public

or private bodies or corporations in the utility survey industry.

與政府部門、半政府機關、公共事業機構、大學、學院及其他公共或私人團體/公司在有關管綫測量業方面合作及磋商，或提供相關協助和諮詢服務

A. 管綫狀況評價(排水) Conduit Condition Evaluation and

Man-Entry Survey(CCTV & ME)

B. 沙井狀況評價 Manhole Internal Condition Survey

C. 管綫測量 Utility Survey (Pipe Cable Locator Survey,

PCL)

D. 漏水監控 Water Leakage Detection and Control

E. 斜坡管道測漏 Advanced Leakage Detection of Buried

Water Carrying Services Affecting Slopes

F. 管綫維修(非開挖工程技術喉管修補) Pipe Rehabilitation

by Trenchless Technology

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G. 管綫雷達探測 Ground Penetrating Radar Survey

H. 流量監控 Flow Study in Drainage Conduit

I. 管道狀況評價 Pipe Condition Surveys by another non-

destructive methods

J. 管綫資料管理 Data Management for Utility Records

K.管綫管理 Utility Management

L. 管綫項目管理 Project Management for Utility Industries

M.非管綫專業會員 Membership without Discipline

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4. HOW AND WHY HKIUS MEMBERS CAN

HELP?

Rigorous entry requirements

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Membership Type Abbreviation Requirements Total no.

Student N/A Full time students and age below 25. 121

Affiliate N/A Age over 18 and Support to HKIUS

constitution

2

Associate AMHKIUS F.5+1 year +Training +Safety +CPD 21

Operative 管綫專業監理員

OMHKIUS F.5+3 year +Training +Safety +CPD +

Interview

50

Manager 管綫專業監理師

MHKIUS Degree+5 years +Training +Safety +CPD

+ Interview

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Fellow 管綫專業監理師

FHKIUS Degree+8 years (or MHKIUS+ 5 years)+

Training +Safety +CPD +

contribution to the industry

20

Recognized

Professional Utility

Specialist 管綫專業監察師

RPUS M/FHKIUS+2 years local exp.+ CPD+

interview

(accept application from 1st Jan, 2009)

2

Honorary Fellow Hon.

FHKIUS

Professionals with substantial

contribution to the industry and by

invitation only.

7

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Corporate Company

Membership

Years of Experience

(Years with HKIUS)

and requirements

Min. No. of member

Total/ (Professional)

Total no.

(Group A)

3 years + Quality and

Safety System 3/ (1)

0

(Group B)

5 (3) years + Quality and

Safety System 6 /(3)

8

(Group C)

10 (5) years + Quality and

Safety System 10/ (5)

6 (accept application from

1st April, 2009)

Sponsor Company Not Required but

supportive to the

industry Not Required

0

Member

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4. HOW AND WHY HKIUS MEMBERS CAN

HELP?

Rigorous renewal requirements

CPD Requirements

Job reference

Audit

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HONG KONG INSTITUTE OF UTILITY

SPECIALISTS (HKIUS)-WHAT WE HAVE DONE

Types of CPD activities provided

Technical seminars

Visits

Conferences

Social events

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RECENT EVENTS

1. 1st International Conference

on Utility Management and

Safety (ICUMAS)

(1-4/3/2009)

2nd International Conference

on Utility Management and

Safety (ICUMAS)

(6-9, March, 2011)

The 1st International Conference in Utility

Management and Safety 2009

HKIUS 6th Anniversary

2 March 2009

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Recruitment Talks for Utility Professionals 2009

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Grand Opening Ceremony of Utility Specialists’ Resource, Training and

Technical Assessment Centre at Kwai Chung (20 Jun 2009)

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"Utility Safety & Management 2009-Drawing(Primary Schools), Slogan

Creation(Secondary Schools) & Photography Competitions(Open)”

管綫安全及管理- 小學繪畫、中學標語創作及公開攝影比賽2009 18 Dec 2009

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Technical Conference on “New Technology for Water Rehabilitation” 23 Oct 2009

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FUTURE MAJOR EVENTS

World Congress on Engineering Assets

Management (WCEAM, 2013)

Internship Scheme

Publication of Manuals

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WORK PROCEDURES Part 2. Operation

第二部份. 操作程序

1. Operation shall be carried out by OMHKIUS(at least 3 years experience) or

AMHKIUS (at least 2 years experience). The whole operation shall be

supervised by OMHKIUS. 操作員應為管綫專業監理員(最少三年經驗)或助理管綫專業監理員(最少兩年經驗) 。整個探測過程必須由管綫專業監理員監督。

2. For power lines, tune to Power Mode to do sweeping for live cables.

調至無源探測模式的Power Mode以檢測有源電纜。

3. Further sweep the rest of the area.

進一步掃查其餘的地方。

4. When there is a signal found, mark the point by spray paint or other means.

當探測到訊號，用噴漆或其他方法作標記。

5. Tune the Receiver to Radio Mode and Sweep for Radio Signal reflected from

Radio Frequency

將接受器調至無源探測模式的Radio Mode，掃查由無線電頻率反射的無線電訊號。

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WORK PROCEDURES

6. Once completed, place the transmitter onto one of the marked

unknown points and turn on the transmitter and select an

appropriate frequency.

完成後，將發射器置於標記點但未能解答的其中一點，啟動發射器，選擇合適的頻率。

7. For Gas/Water Pipes or other pipes with connection point, connect

the signal lead to an accessible point safely by connection method

and turn on the transmitter.

若是煤氣喉／水喉或其他可接駁金屬管綫，安全地連接訊號夾至其接觸點，啟動發射器。

8. Tune the receiver to the same frequency and start to search for the

signal.

將接收器的頻率調至與發射器相同的頻率，開始搜尋訊號。

9. Mark further points along the routing and record the depth in

location where signal is steady.

沿著管道的路線繼續做標記，在訊號穩定的地方量度深度。

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WORK PROCEDURES 10. Search the area to check if the signal has coupled to any nearby lines

within the arm radius, or radius of 3-5 meters if necessary.

在目標電纜的約一手臂的(如有需要，半徑三至五米)範圍內，檢查訊號有否被鄰近電纜吸收。

11. Measure the current on the target line and on any other lines located

within the arm radius (or 3-5 meters radius). Check that the mA

current value is higher on the target line than on any other nearby

lines. 量度目標電纜及其手臂(或半徑三至五米)範圍內的鄰近電纜的電流值，檢查目標電纜的電流值是否高於其他鄰近電纜。

12. Check current value on the target line and on other nearby lines.

檢查目標管綫及鄰近管綫的電流值。

13. QA/QC check on site by verifying some of the located alignment and

check with existing records again. Determine which information is

correct on site if there are difference with the records.

即場作品質監控，驗證一些已標記的路由並與現時的紀錄作對比，如與圖則有差異，需即場決定哪個是正確的資料。

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14. Use total station to produce site records

以全站儀作現場紀錄。

15. Last minute check and complete daily report

作最後檢查並完成日常報告。

16. Clean and tidy up equipment and site

收拾、清潔儀器及還原現場。

17. Hand in raw data materials to report team 將

現場搜集的資料交給報告組。

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Part 2.1 Accuracy Requirements 第二甲部 準確性要求

Standard /Tolerance 標準/公差

Depth of metallic lines by locator 金屬管綫深度

Centre of pipes/ cable 喉中

Depth of non-metallic lines by sonde

or direct measurement 非金屬管綫深度或直接量度的深度

Bottom of duct 喉底

Cable ducts 電纜槽

mark on the drawing with outer

cables shown on each side 在圖上標記每邊位於最外面的電纜

Buried utility depth 管綫深度

+ 165 mm/毫米 or 0.1d (at least 90%

of results shall reach the standard) (最少九成的結果需符合以上標準)

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WORK PROCEDURES Part 3. Report

第三部份. 報告

1. Process raw data from site team

整理現場搜集的資料。

2. Office Checking of the site records against existing Record

Plans. 在辦公室核對現場紀錄及紀錄圖則。

3. Use the total station result to edit drawings by IDMS

根據全站儀的結果，使用綜合資料管理系統編輯繪圖。

4. Technical Report with site records, photographs, signature and

proposed trial pit location (if necessary).

技術報告包括現場紀錄、相片、簽名及建議挖掘試孔位置(如有需要) 。

5. QA/QC before reporting by MHKIUS (at least 5 year experience)

報告前由管綫專業監理師進行品質監控程序 (最少五年經驗) 。

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WORK PROCEDURES

6. Report shall consist of the followings

報告需包含以下項目

7. Survey report – name and certificate number of competent person,

mandatory information, survey result, recommendation

檢測報告－合資格人士的名稱及證明書號碼、基本資料、測量結果、建議。

8. Site photographs

現場相片

9. Information of equipments used

所用儀器的資料

10. Utility survey drawing – alignment, depth, diameter, direction

(drainage services), type of the services, location of manholes and

other related surface installations

管綫測量繪圖－設施的路由、深度、直徑、方向（渠務設施）及種類、沙井及其他地面設施的位置。

11. Report to be confirmed by RPUS.

報告需由管綫專業監察師(至少八年經驗)監定。 81

WORK PROCEDURES

Part 4. Final Verification (if requested by the client)

第四部份. 最後驗證 (如客戶要求)

1. Hand-dig trial pit by the contractor to expose cables located. 承建商挖掘試孔，露出已定位的電纜。

2. Checking by clamping method on cables by the competent person to locate the alignments and depth of those exposed cables. 合資格人士用訊號鉗注入的方法，找出已露出電纜的路由及深度。

3. Update the utility survey drawing for final reporting.更新管綫成果圖作為最後報告。

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Report form from EMSD

84

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86

87

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89

90

91

92

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Form A - Utility Survey Form

94

95

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Form B - Utility Mapping Form

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Form C - Utility Sketch Form

LEGAL AND CONTRACT

REQUIREMENTS Chapter 406 Electricity Ordinance

406H: Electricity Supply Lines (Protection)

Regulation (供電電纜(保護)規例)

Chapter 51 Gas Safety Ordinance

51B: Gas Safety (Gas Supply) Regulations (氣體安全(氣體供電)規例)

Contract: as specified in individual contract

99

CODE OF PRACTICE(實務守則)

100

ELECTRICITY SUPPLY LINES

(PROTECTION) REGULATIONS (電纜保護規例)

(ESLPR)

101

ESLPR SPECIFIES … A person shall not carry out or cause or permit

another to carry out in the vicinity of an

underground or overhead electricity cable

works of any kind unless before the works are

begun all reasonable steps (合理步驟)have

been taken to ascertain the existence within

the proposed works site and its vicinity of any

such underground electricity cable and its

alignment and depth(準線及深度) or any such

overhead electricity line and its alignment,

distance from the ground and voltage 102

ESLPR SPECIFIES …

A person who carries out or causes or permits

another to carry out in the vicinity of an

underground or overhead electricity cable

works of any kind shall ensure that all

reasonable measures are taken to prevent the

occurrence of an electrical accident or an

interruption to the supply of electricity(電纜中斷) arising from those works.

103

REASONABLE STEPS MEANS ...

Appoint a competent person(合資格人士)

to undertake an investigation to ascertain

the existence within the proposed works

site and its vicinity of any underground

electricity cable and its alignment and

depth

A written report(書面報告)of the survey

findings is produced by the same

competent person 104

ESLPR’S SAFE SYSTEM OF WORK Reasonable steps before commencement of

work obtain plans for U/G cables and other U/G

services

locating the U/G cables

using trail holes to confirm cable alignment and depth

Reasonable measures in the course of work safe excavation, backfilling and working

practices

safe working practices for trenchless methods

safe working practices for other works

(Not to be covered in this course)

105

PENALTIES(罰則)

106

Fail(違反) to take reasonable

steps before the works

Level 4 fine(罰款)

($25000) and

imprisonment(監禁) for

6 months

Fail to take reasonable

measures to prevent the

occurrence of an electrical

accident

$200000 fine and

imprisonment for 12

months

A person told himself out as

CP but he is not Level 4 fine ($25000)

DUTIES OF COMPETENT PERSON

107

STEP 1: OBTAIN U/G CABLE PLAN & SERVICE

DRAWINGS(取得地下電纜的圖則及地下資料)

Obtain service plans or drawings from public

utilities and government departments

For shallow excavation(淺土挖掘) (i.e. < 450

mm), U/G cable drawing is not mandatory(無硬性規定) but still recommended

What will you do with the plan? 108

WRITTEN REQUEST(書面請求) TO POWER

COMPANY Include information on

parameters of the work site (工程範圍)

scope of work(工作性質)

nature of the proposed works(工程性質), since it affects the extend of ‘vicinity’

Drawings provided by Power Company valid only 3 months(有限期為3個月).

if the information is obtained 3 months before commencement of work, re-consult the supplier 14 working days before work is due to commence 109

DEFINITION OF VICINITY AS DISTANCE

FROM U/G CABLE (工地範圍的定義)

Type of works below Ground Level Distance

Trench/excavation work in stable

conditions(穩定的土地狀況) up to 1.5 m in

depth

3 m

Trench/excavation work in stable conditions

over 1.5 m and up to 5 m in depth

5 m

Trench/excavation work in stable conditions

over 5 m in depth

10 m

Excavations under U/G cables Consult electricity

supplier regardless of

depth of U/G cable 110

DEFINITION OF VICINITY AS

DISTANCE

FROM U/G CABLE

Type of works below Ground Level Distance

Welding/hot work(燒焊/熱加工)near exposed U/G

cables

10 m

Piling, percussion moling or pipe jacking(打樁、撞擊式挖土或頂管工程)

15 m

Ground investigation, drilling, core sampling or

ramming(垂直貫穿、鑽探、岩芯取樣或錘擊) 3 m

Use of explosives(使用炸藥) 60 m

111

EMERGENCY WORK(緊急工程)

(impossible to obtain cable plan in advance)

obtain oral advice(口頭意見) from power

company

request their attendance to site

if power company cannot respond immediately,

assume that there are U/G cables and proceed

with extreme caution

112

ELECTRICITY SUPPLIER(供電商) SHOULD

Without charge(免費) provide details of the

alignment of any U/G cable in the proposed works

site or its vicinity within 14 working days

Accurately record the as-built alignments of their

U/G cables and maintain the accuracy of such

records throughout the life of the cable

Highlight the alignment of U/G cables of depth less

than 900 mm in carriageways or 450 mm in other

areas

Attend site meetings and assist in locating U/G

cables when necessary 113

Record plan(紀錄圖則) should indicate

the size, voltage rating and the

recorded alignment and depth of all

U/G cables

114

CAUTIONS ON SUPPLIED CABLE PLANS

Position of reference points (kerb or building line)

may have changed

Cable depth altered as road regraded or

resurfaced(重鋪)

U/G cable being removed without the knowledge of

the electricity company

U/G cable marked straight might actually

snakes(偏離直線)

Level & alignment of cable may change rapidly over

a short distance due to the presence of

underground obstruction(地下障礙物) 115

STEP 2: PRELIMINARY SURVEY

Survey the proposed works site or its vicinity

to determine the alignment of U/G cables

in conjunction with available U/G service plans

use cable locator at passive detection mode(無源探測)

Identify location(s) for trail hole digging

Sketch site drawing and record useful

information for trail hole digging

Mark the alignment of cable 116

DETECTION MODES(測定模式) Passive(無源)

Signals naturally present in conductors

50 Hz and radio frequency (from broadcast systems)

Detection by radio frequency is less definite

Should not be relied upon for depth measurement

Active (有源) Requires the use of a signal generator

(transmitter)(發射器)

Signal can be transmitted to the cable by induction or signal clamp(感應或環形訊號鉗)

Allows more precise work such as depth measurement and signal strength comparison

117

STEP 3: HAND DIG TRIAL HOLES(手動試孔)

To confirm and ascertain the alignment and depth of U/G cables

For excavation depth of 450 mm or more

To facilitate active mode detection for accurate survey of cable profile (i.e. alignment and depth)

Although it is not mandatory, it is highly recommended that CP should present at site to provide precautionary advices and monitor the digging process

118

STEP 4: ACTIVE MODE CABLE DETECTION

Confirm(確定) U/G cable alignment and depth

A small part of the target cable should be exposed

to allow the CP to gain access for active detection

Complete necessary work forms and properly

record U/G cable profile in a drawing for inspection

upon request by EMSD

How do you know if the equipment is working properly?

119

STEP 5: REPORT

Director of EMSD can request to

inspect the report before and during

the course of the works until it is safely

completed

120

STEP 5: REPORT(報告)

The report shall include:

Name and certificate number of competent

person

Name of contractor

Location, date and time of cable locating

Reference points

Brand name, model number, serial number,

calibration record and the mode of operation of

the locator

Cable alignment record

Include photographs or videos to avoid

confusion 121

122

The roles of a competent Person (合資格人士) The requirements set in the regulation(cap406H) for a

Competent Person is described as follow: • A competent person who undertakes an

investigation to ascertain the existence, alignment and depth of an underground electricity cable-

(a) shall not delegate the function and duty of the investigation to another person;

123

The roles of a competent Person

(b) may carry out the investigation with the assistance of any other persons, but such persons shall be directly supervised by that competent person at the proposed works site in the course of the investigation;

(c) shall carry out the investigation in a manner that does not cause damage to, or impair the operation of, the underground electricity cable (地下電纜); and

124

(d) shall provide the person requesting the investigation with a written report of his findings as to that matter.

Other than the above listed, in general terms, a competent person shall also:

Familiar with the requirements under the regulation. Familiar with the Code of Practice (實務守則). Prepare for suitable material before work

commence.

125

Work in safe manner and with PPE (個人防護裝備)at all times.

Protect others by giving appropriate notices and providing precaution measures on the working site such as barriers, lighting and guarding and warning signs.

126

Minimize the disruption (混亂) to the public by providing best possible result to the client and to alert the client to use hand tools for trial pits.

Provide clear and appropriate records and information to client for their future reference.

Issue permit to dig certificate only when he is comfortable that the necessary information has been located in the site.

127

Keep and maintain a copy of all the results acquired from survey and to be inspected by the relevant authorities when required &

Others may be required under other related regulations.

Note: Under the regulation, the competent person is competent for locating underground cables only. You should seek for help from other types of competent person (eg. Registered Safety Officer & Licensed Electrician) for advice on different issues.

工 程 師 可 以 做 甚 麼 工 作 ? WHAT ENGINEERS COULD DO ?

128

Dr. King Talk Show-2011

工 程 師 可 以 做 甚 麼 工 作 ?

男，漢族，１９４２年１２月生。

安徽績溪人，工程師。

１９６５年７月參加工作，清華大學水利工程系河川樞紐電站專業畢業，大學學歷。

１９６４年４月加入中國共產黨。

曾任甘肅省建委秘書及貴州省委書記 。

http://www.people.com.cn/GB/shizheng/252/9667/9670/20021126/874736.html 129

Dr. King Talk Show-2011

WHAT ENGINEERS COULD DO ?

IEEE Spectrum 130

Dr. King Talk Show-2011

DR. KING理念創造富裕人生

D – Don’t be Ashamed香港精神

R – Right Now 坐言起行

K – Knowledge 專業求真

I – Innovation 意念創新

N – Network 團結齊心

G – Guts 勇氣奪金

131

Dr. King Talk Show-2011