MEP Manual

MECHANICAL-ELECTRICAL & PLUMBING

A HANDBOOK FOR

MEP

ENGINEERS

Author

Dr. Sanwar Lal Sharma

B.E (Ele.), D.E (Ele), D.M&M

B.A (Economics), M.A (Criminology), M.Phil (I.R) &Ph.D (H.R) A. Resident Engineer (MEP

)

DIAR Consult

Victory height Project- Dubai International sports city

DUBAI-UAE

PREFACE

This tiny effort has been made in the direction to appreciate the

importance of electro-mechanical and plumbing work in the

construction industry.

This will serve as a hand book with ready reckoned to all

professionals engaged in the MEP work.

It will also provide a ready made guidance to all contractors and

sub contractors at site.

This book clearly defines the roll and responsibility of each one

involved in the execution of the project.

It is observed in my long years of experience in the field that there

is always a dispute within the agencies regarding administrative

procedures to be followed. Keeping that thing in mind we tried to

segregate all administrative obligations to be adhered by each

agency.

It is hoped that this small effort will bring a big change in the

professionals’ approach engaged in the construction industry.

Sincerely,

Contents

Pages

 Preface 3

 Reference Standards/documents 5-6

 Project Co-ordination 7-11

 MEP Organization 12-25

 MEP staff Responsibilities 26-32

 Inspection Methodology 33-56

(Electrical)

 Inspection Methodology 57-74

(Mechanical)

 Standards of submittals 75-85

 Annexure (Templates) 86-105

 Abbreviation 106-107

 About Author 108

REFERENCE STANDARD&

DOCUMENTS

3- Source of Documents

The philosophy of the electro mechanical project management is drawn from ISO 9001 (2000) and British standards.

However, every particular project is guided by its own project contract and supervised by quality manual.

Main documents referred for smooth operation and implementation of quality standards of the project are :

1.ISO 9001( 2000) 2. BS standards 3.ASTM standards 4. ASHRE standards

5.IEE regulation 16 th edition (Electrical) 6. IP Standards.

7. Local authorities’ rules and regulations. 8. MEP Guide

4- Co-ordination

4.1 The project co-ordination is the main operational and management tool to Execute the project smoothly and timely.

Co-ordination among all agencies such as client, consultant, main contractor and other subcontractor are most essential to have proper reporting system to Over look and supervise all activities in progress at site.

Generally the following chain is maintained:

Client(Management)

Consultant

Main Contractor

All sub contractor

4.2 Co-ordination between client and consultant

4.2.1 It is the main obligation of the consultant to appraise the progress of the Project to the client periodically.

4.2.2 Where Specified with in the tender documents or in contract documents, specific client reporting templates (formats) and coordination procedures will Be implemented. In other cases the formats published/distributed by

Consultant will be utilized and followed.

4.2.3 Should client need any direct reporting on specific formats the same will be Distributed to all concern by consultant.

4.2.4 Generally all reporting to the client or his representative will be followed or routed through consultant. However client as the owner of the project can direct any agency involved in the project to submit specific reports. All agencies are requiring submitting the desired report to client under intimation to consultant if not directed to do so by the client.

4.3 Coordination between consultant and main contractor

4.3.1 It is the main obligation and sole responsibility of the contractor to convert designed project in to a reality.

4.3.2 To fulfill this task the consultant becomes the main controller of the all project.

4.3.3 It is the sole responsibility of the consultant that all local and international norms including safety and environment protection are adhered and followed.

4.3.4 The quality standards are maintained as per designed specification laid down in the construction documents.

4.3.5 The consultant or his representative will act as main controller of the project. 4.3.6 The main contractor will keep a close association with the consultant. All drawing/material will be approved by engineer before putting them in use. 4.3.7 The contractor will invite engineer for all technical activities prior decided. 4.3.8 It is the duty of consultant to remove all project bottlenecks.

4.3.8 The contractor is obliged to bring a clear picture of all activities going on at the site by submitting periodic reports.

4.3.9 The contractor will use all specific reporting formats advised by consultant for all project activities.

4.4 Co ordination between main contractor and sub contractor

4.4.1 All sub contractors will work under the supervision of main contractor. 4.4.2 All sub contractors are compulsorily registered with local government. 4.4.3 All submittals submitted by sub contractor should be routed through main contractor.

4.4.4 Main contractor should act as intermediate agency between consultant and sub contractor.

4.4.5 All the periodic report submitted by sub contractor should be forwarded to engineer by main contractor.

4.4.6 It is mandatory for main contractor to take the approval of all sub contractors engaged for project activities.

4.4.7 Main contractor is required to pass on all standard formats of engineer to sub contractor.

4.4.8 It is the sole authority of engineer to deal directly with any of the sub contractor wherever required or desired so by engineer.

Index Page no.

5. 01 Introduction 14-14

5.02 Management and reporting scheme 14-15

5.03 MEP orgonogram 16-16

5.04 Key personnel’s Job descriptions 17-25

5.05 Department’s responsibilities and functions 26-26

5.01 - INTRODUCTION

Comply with local Government guide lines with clear defined responsibilities especially in the area of quality assurance, site management, testing &commissioning and finally handing over the completed project to the client.

5.02 - Management reporting scheme

MANAGING DIRECTOR Director Design manager Architecture Design manager-Inte. Head MEP  General Affairs Project REs

It is desired that the final goal of organization will be reached together with company’s growth and development of all functions.

The function of general affairs include: Human Resources, Computer systems, Legal affairs, Public relations etc.

However, targeted structure of Operational organization is outlined separately and not in the scope of this manual.

5.03- (MEP) ORAGONOGRAM

The MEP organization structure, which is a good transitional solution adequate to the current company’s size, needs and resources.

In this document organization of MEP Operations is outlined in details. It is based on the planned scope of activities with the expectation that desired goals will be reached.

Assistant Resident Engineers MEP

Senior Mechanical Engineers Senior Electrical Engineers HEAD OF MEP Department Resident Engineer Consultant Managing Director

5.04 Key personnel’s Job descriptions

5.04.01- Head MEP Division

Job title: 

HEAD MEP DEVISION

Job code: 

Job holder: 

Reports to: 

Managing Director /RE

First reports:

All MEP project heads from various projects

Job description:

This is key position for ensuring Proper design with quality & safety. Development and control of quality program, technologies, products and system evaluation and highest adherence of all local and international standards.

Responsibility:

SEE IN STAFF RESPONSIBILTIES

Authority:

 Can hire or fire staff with the approval of MD

 Can suspend staff notifying MD  Approves revenue items within budget  Approves capital expenditure against budget  Agrees and approves product changes.  Recruitment and training of MEP staff.

 Re location and realignment of MEP staff as per project requirements.

Communication

internal

 All Project heads  All senior management  All other personnel deem fit.

 In depth understanding of local government rules and requirement.

 Familiar with computers

 A postgraduate qualification would be an advantage

Managing Director’s Review

Human Resources Review 

Employee’s review

5.04.01 Assist. Resident Engineer

Job title: 

Assist. Resident Engineer

Job code :( if any) 

Job holder: 

Reports to: 

Head MEP /RE

First reports:

From mechanical engineer and electrical engineer of respective project.

Job description:

This is key position for ensuring Proper design with quality & safety. Development and control of quality system, technologies, products and system evaluation. Design of specification and product selection .Highest adherence of all local regulation and international standards.

Responsibility:

SEE IN STAFF RESPONSIBILITIES

Authority:

 Can hire or fire staff with the approval of Head MEP

 Can suspend staff notifying Head MEP

 Agrees, recommend and approves product changes.  Recruitment and training of MEP staff under intimation to

MEP Head.

 Re location and realignment of MEP staff as per project requirements with in own responsibilities.

Communication

external

 Regulatory authorities  Professional bodies  Customers  Suppliers

Requirements:

 Graduated in Mechanical / Electrical engineering.

 Minimum 10 years experience out of which 05 years in Middle East. UAE experience preferred.

 Leadership & Management abilities  Excellent oral and written English

 In depth understanding of local government rules and requirement.

 Familiar with computers

 A postgraduate qualification would be an advantage

Head of MEP ’s review Human resource review Employee’s Review

5.04.03 Sr. Engineers/Engineers

Job title: 

Sr. Engineers

Job code :( if any) 

Job holder: 

Reports to: 

ARE(MEP)/RE

First reports:

From engineer/inspectors (electrical/Mechanical) of respective project.

Job description:

This is key position for ensuring implementation of design with quality & safety. Follow of quality program and system. Highest adherence of all local regulation and international standards.

Responsibility:

SEE IN STAFF RESPONCIBILTIES

Authority:

 Agrees, recommend and approves product changes.

 Recruitment /interview recommendations. Training of MEP staff under intimation to MEP Head.

 Re location and realignment of MEP staff as per project requirements with in own responsibilities.

internal

 Respective MEP head /Project heads  Technical co-ordination with other departs.

 Minimum 7 years experience out of which 03 years in Middle East. UAE experience preferred.

 Leadership & Management abilities  Excellent oral and written English

 In depth understanding of local government rules and requirement.

 Familiar with computers

 A postgraduate qualification would be an advantage.

Head of MEP ’s review

Human resource review

Employee’s Review

5.04.04 - MEP Inspectors

Job title: 

MEP Inspectors

Job code :( if any) 

Job holder: 

Reports to: 

Sr. Engineer/ Engineer

First reports:

Nil.

Job description:

This is key position for ensuring Implementation design with quality. Follow quality program. Highest adherence of all local regulation.

Responsibility:

SEE IN STAFF RESPONCIBILTIES

Authority:

 Can recommend approval/suspension /rejection of inspection

notifying sr. engineer/engineer.  Recommend product changes.

 Training of MEP staff under guidance of MEP Head.

internal

 Respective sr. engineers/MEP heads

Communication

external

 Regulatory authorities &Professional bodies notifying MEP

head in the project.

Requirements:

 Graduated in Mechanical / Electrical engineering.

 Minimum 3 years experience out of which 02 years in Middle East. UAE experience preferred.

Or

Technical diploma with 10 years relevant experience.  Excellent oral and written English

 In depth understanding of local government rules and requirement.

 Familiar with computers desirable

Head of MEP ’s review Human resource review Employee’s Review

5.05 Department’s responsibilities and functions

5.5.01 MEP department will work with civil engineering in a close coordination. 5.5.02 it is the main responsibility of the department to approve all drawings/material related to HVAC, Plumbing and electrical.

5.5.03 the department will carryout all schedule inspections requested by MEP contractor.

5.5.4 It is the obligation of the department to verify and approve the sub contractor For MEP work at site.

5.5.5 All services coordination under ground and other floors above ground is to be checked and approved by department.

5.5.6 MEP department (Electrical) will assist sub contractor in solving DEWA bottle necks.

5.5.7 MEP department (Mechanical) will assist sub contractor in solving the DM problems related to water and drainage.

5.5.8 MEP department will also support civil and main contractor to solve civil defense and fire fighting problems.

5.5.9 MEP department will scrutinize all the CVs of sub contractor and approve them as per listed specification.

5.5.10 MEP department will participate in all weekly progress meetings.

5.5.11 MEP department will also participate in all other meetings called by client and or his representative.

5.5.12 MEP department will coordinate with other infrastructure contractor working with the specified area.

5.5.12 MEP department will submit periodic reports to MEP head at head office. 5.5.13 MEP department will keep all the records of inspection, material submittal and drawing submittals.

Index Page no.

6.1 Head of Department ( MEP) 29-29

6.2 Assistant Residence Engineer (MEP) 30-30

6.3 Senior Engineer(Electrical/ Mechanical) 31-32

6.1- Head of Department (H.O.D)-MEP

Technical /Administrative Responsibilities:

6.1.1 Electro Mechanical (MEP) project management as per Dubai Govt. /International norms.

6.1.2 To review and approve material submittals reviewed & recommended by ARE/ Sr. engineer / Engineer.

6.1.3 To review and approve drawing submittals reviewed & recommended by ARE/ Sr.engineer / Engineer.

6.1.4 Participating in weekly project review meetings for tracking project progress & de-bottlenecking & implementation of procedures as per norms and Standards.

6.1.5 To authenticate monthly payment bill after reviewed and recommended by ARE/ Senior engineers.

6.1.6 Involve in strategic technical planning for achieving targeted schedules and Their implementation

6.1.7 Departmental reporting to management on periodic basis. 6.1.8 Final authorization & counter signing for all MEP activity.

6.1.8 To provide management guidance and leadership to MEP team members. 6.1.9 To review and forward all MEP variations applicable to all on going projects. 6.1.10 To review and counter sign all the MEP correspondences made with the

Client, main Contractor or Sub-Contractors.

6.1.11 to review and approve all contractor claim & variation (related to MEP). 6.1.12 Institute change-management practices in the department, including

restructuring & manpower rationalization initiatives, and facilitate acceptance by the staff across hierarchical levels. Formulate and benchmark functional best practices to focus on core MEP function.

6.1.13 Evolution of performance of contractors and other associated agencies 6.1.14 Oversee smooth implementation of manpower planning, recruitment, selection, induction, orientation and development of new employee, promotion in the department through Career and Succession Planning.

6.2- Assistant Resident Engineers (ARE) – MEP

Technical and Administrative responsibilities

6.2.1 To provide leadership and technical guidance to site MEP department at site. To handle all incoming and out going correspondence related to MEP.

6.2.2 To review the Design of all MEP services and bring any concern to the attention of H.O.D.

6.2.3 To ensure that DIAR Consult concept / procedures are strictly followed by all the MEP staff.

6.2.4 Electro Mechanical (MEP) project management at site as per Dubai Govt. /International norms

6.2.5 To review and approve the material submittals reviewed & recommended by Sr. engineer / Engineer.

6.2.6 To review and approve the Drawing submittals reviewed & recommended by Sr.engineer / Engineer.

6.2.7 Participating in weekly project review meetings for tracking site progress & de-bottlenecking & implementation of procedures as per norms and standards.

6.2.8 To ensure that the contractors / subcontractors are registered and obtained license from local authorities before commencement of the work at site. 6.2.9 To obtain approval of H.O.D on all material submittal. (if they are not

specified)

6.2.10 To coordinate the MEP services with Civil / Architectural works.

6.2.11 To review the program of work submitted by the contractor and approve comments

6.2.12 To ensure that all testing and commissioning procedure are strictly followed by concerned all MEP staff.

6.2.13 To review, write and forward the performance appraisals to head of the department for all the staff working under him.

6.2.13 To prepare periodic reports for the Head of the department related to site progress and execution.

6.3- Senior Engineers (Electrical/Mechanical) (SEE/SEM)

Responsibilities

6.3.1 To check and review all the related material submittals documents and verify their conformity with the specification and Contract documents and forward to the MEP head.

6.3.2 To ensure that all the material submittals must be submitted as per standards listed in specification book. Such as:

a. Submittal to have Main index list b.Submittal to have Specified material list c. Submittal to have Specification copy. d.Submittal to have Catalogue copy

e. Submittal to have Data sheet i.e. to describe about the proposed

Technical characteristics of the material and also to show the catalogue number of the proposed material.

f. Submittal to have Compliance statement showing the exact comparison between specified and proposed material submittal and to be properly stamped and signed by the main Contractor and Supplier.

g.Manufacturer/supplier address to be clearly shown on submittal form. 6.3.3 To advise sample approval of all related material before any installation in

the site for MEP Head.

6.3.4 To check and review all the related shop drawing as per the contract, tender drawing and all addenda. To ensure that shop drawings are accurate and detailed and are fully coordinated with all other services.

6.3.5 To note and review all the changes or variations coming in drawings or BOQ (i.e. Quantity) during execution of the project.

6.3.6 To approve request for inspection for any Electrical/mechanical activity done at site.

6.3.7 To check the quality of work at site and insure that site execution is as per project specification and authorities regulations.

6.3.8 To check as per actual installation and forward the “As Built Drawings” received from contractor to head MEP. To attend weekly site coordination meetings.

6.3.9 To guide and liaise with contractor/sub contractor for obtaining all approvals related to MEP from authorities.

6.3.10 To make correspondence with the Client, Main Contractor Sub-Contractor under guidance of head MEP/ project RE.

6.3.11 To provide guidance and supervision to related inspectors for site inspection work.

6.3.12 To counter sign on all the inspection reports performed at site by inspectors. 6.3.13 To report to immediate superiors all matters of non conformity and

irregularities of executed works and to record such matters consistently and systematically in proper filing system.

6.3.14 To accept full responsibilities of site supervision of electrical / mechanical works on project as assigned by management in a professional and competent manner.

6.3.15 To work in full coordination with all members of staff at site / head office and subscribe to the over all procedures.

6.4- Inspectors (Electrical/ Mechanical) (EI / MI)

Responsibilities

6.4.1 To accept full responsibilities of site supervision of Electrical/mechanical Works executed at site.

6.4.2 To conduct inspections for all Electrical /mechanical works done at site as per

inspection request submitted by contractor.

6.4.3 To supervise & improve the quality and quantity of Electrical / Mechanical

installation at site

6.4.4 To check and be ensured at site that only approve material/drawing is

(being) used.

6.4.5 To conduct and witness all types of electrical/mechanical site testing and

commissioning and make written report to superiors at sites.

6.4.6 To conduct / check all the insulation resistance test, continuity test of LV cable

Polarity test, earth resistance test, air balancing test, chilled water balancing test, pressure test, hydraulic test, units & equipment test etc.

6.4.7 To review the location and the installation levels for all Electrical/Mechanical

INSPECTION METHODOLOGY

(ELECTRICAL)

INSPECTION METHODOLOGY-(ELECTRICAL)

INDEX Page No.

7.1 L.V Panel Main Distribution Board (MDB) 35-36 7.2 SUB Main Distribution Board (SMDB) 36-37

7.3 Final Distribution Board (DB) 38-38

7.4 Capacitor Bank 39-40

7.5 Equipment Control Panel 40-41

7.6 Isolators 41-41

7.7 Electrical Manholes (EMH) 42-42

7.8 Telephone Manholes (TMH) 42-43

7.9 Light Fittings (Indoor Fittings, Wall Lights, & Emergency Lights)

43-44

7.10 Light Switches & Power Switches 45-45

7.11 Switched Sockets 46-46

7.12 Standby Generator Set 47-48

7.13 Transformer & Ring Main Unit (RMU) 48-48 7.14 Equipment Earth Pits Neutral Earth Pits (EP) 49-49

7.15 Fire Alarm System 49-50

7.16 Voice Data Structured Cabling System 51-51

7.17 Intruder Alarm System 52-52

7.18 CCTV System 52-53

7.19 Building Management & Control System 53-54 7.20 Public Address & Music System 54-55

7.21 MATV System 56-56

7.1- (L.V). Main Distribution Boards MDB

M.D.B should be checked & inspected as per approved material submittal and Listed specification. The below mentioned checks should be done by

electrical inspector and verified by sr. engineer/engineer electrical.

7.1.1 MDB Should be from approved vendor as per approved material submittals IP grade , color and “form” of the panel to be confirmed as per approval.

7.1.2 Check and verify “Factory Test Certificate” from panel manufacturer. 7.1.3 MDB should be as per approved component and drawings.

7.1.4 Make and rating of the Circuit Breakers, meters (A&V), ELCBs etc. should be as per approved submittal.

7.1.5 Rating & Quantity of future space / spare feeders should be as per approvals. 7.1.6 Fault rating of the bus bar & circuit breaker should be as per approved drawings 7.1.7 Circuit Breaker settings verified / adjusted should be as per approved drawings 7.1.8 Bus Bar compartment should be fully shrouded and proper warning labels to be provided

7.1.9 MDB door gaskets, protective covers / shrouds should be fitted

7.1.10 MDB installation should be done properly & sufficient supports provided 7.1.11 Cable glanding, termination, cables supports & tagging should be proper and satisfactory.

7.1.12 MDB power cables, Cable glands and all components should be easily accessible 7.1.13 Cable tray and trunking in side the panel should be in installed properly with cove on. Earthing to the panel to be provided.

7.1.14 Earthing and equiv. potential bonding of MDB is done properly & size of earth cable should be as per drawing

7.1.15 MDB internal & external surfaces should be clean & all unused holes plugged 7.1.16 Insulation (Megering) resistance for MDB should be carried out at site and to be recorded

7.1.20 KWh installation, type, C.T ratio and locations should be as per local govt. authority’s approval.

7.1.21 MDB main label with feeder description & Component identification labels should be provided

7.1.22 Laminated approved load schedules should be provided inside the MDB. 7.1.23 As-Built drawing from panel builder should be provided in drawing pocket in MDB.

7.2- SUB Main Distribution Board (SMDB)

Should be checked & inspected as per specification & material submittal approval by the inspector & is to be cross checked by Engineer stated as follow.

7.2.1 SMDB Supplied From approved vendor should be as per approved material submittal.

7.2.2 Factory test certificate from panel builder should be verified and values to be accepted.

7.2.3 SMDB should be as per approved drawings, single line diagram and to be requirements.

7.2.4 Rating & Quantity of the Circuit Breakers, meter etc. should be as per approved drawing.

7.2.5 Rating & Quantity of future space / spare feeders should be as per approvals 7.2.6 Fault rating of the bus bar & circuit breaker should be as per approved

drawings.

7.2.7 Circuit Breaker settings verified / adjusted should be as per approved drawings.

7.2.8 Bus Bar Compartment should be fully shrouded and to be proper warning label provided.

7.2.9 SMAB door gaskets, protective covers / shrouds should be fitted 7.2.10 SMAD installation to be done properly & sufficient supports should be

7.2.11 Cable glanding, termination, cables supports & tagging should be satisfactory.

7.2.12 SMDB power cables, Cable glands and all components should be easily accessible.

7.2.13 Cable tray and trunking should be installed properly, covers and earthing are to be provided.

7.2.14 Earth bonding of SMDB to be done properly & size of earth cable should be as per drawing.

7.2.15 SMDB internal & external surfaces should be clean & all unused holes to be plugged.

7.2.16 Installation resistance for SMDB should be carried out at site and to be recorded.

7.2.17 Installation resistance for main & all feeder cables should be carried out and to be recorded.

7.2.18 Functional Test for SMDB should be carried out and to be found satisfactory.

7.2.19 Earth Leakage / fault teat should be carried out &to be found satisfactory (if applicable).

7.2.2O Main Label, feeder description & Component identification labels should be provided.

7.2.21 Laminated approved load schedules should be provided inside the SMDB 7.2.22 As-Built drawing from panel builder should be provided in drawing pocket

in SMDB.

7.2.23 As-Built drawing from panel builder should be provided in drawing pocket in SMDB.

7.3- Final Distribution Board (DB)

D.B should be checked & inspected as per approved material submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer/engineer electrical.

7.3.1 DB Should be from approved vendor as per approved material submittals IP grade, color and “form” of the panel to be confirmed as per approval.

7.3.2 Check and verify “Factory Test Certificate” from panel manufacturer. 7.3.3 DB should be as per approved component and drawings.

7.3.4 Make and rating of the Circuit Breakers, meters (A&V), ELCBs etc. should be as per approved submittal.

7.3.5 Rating & Quantity of future space / spare feeders should be as per approvals. 7.3.6 Fault rating of the bus bar & circuit breaker should be as per approved drawings 7.3.7 Circuit Breaker settings verified / adjusted should be as per approved drawings 7.3.8 Bus Bar compartment should be fully shrouded and proper warning labels to be provided

7.3.9 DB door gaskets, protective covers / shrouds should be fitted

7.3.10 DB installation should be done properly & sufficient supports provided

7.3.11 Cable glanding, termination, cables supports & tagging should be proper and satisfactory.

7.3.12 DB power cables, Cable glands and all components should be easily accessible 7.3.13 Cable tray and trunking in side the panel should be in installed properly with cove on. Earthing to the panel to be provided.

7.3.14 Earthing and equiv. potential bonding of DB is done properly & size of earth cable should be as per drawing.

7.3.15 DB internal & external surfaces should be clean & all unused holes plugged. 7.3.16 Insulation (Megering) resistance for DB should be carried out at site and to be recorded

7.3.17 Insulation resistance for main & all feeder cables should be carried out and to be recorded

7.3.18 ATS operation (auto / manual) functional check should be carried out (if applicable)

7.3.19 Earth Leakage / fault teat should be carried out & should be satisfactory where ever applicable

7.3.20 DB main label with feeder description & Component identification labels should be provided

7.4- Capacitor Bank

Should be checked & inspected as per specification & material submittal approval by the inspector & is to be cross checked by Engineer stated as follow.

7.4.1 Panel supplied from approved vendor should be as per approved material submittal.

7.4.2 Factory Test Certificate from panel builder should be verified and values to be accepted.

7.4.3 Panel should be as per approved drawings, load schedules and requirement. 7.4.4 Rating of circuit breakers, fuses, capacitor should be as per approved

drawing.

7.4.5 Switching step of capacitor banks should be as per approved drawing.

7.4.6 Fault rating of the bus bar & circuit breaker should be as per approved drawing.

7.4.7 Circuit breaker settings should be verified / adjusted should be as per approved drawing.

7.4.8 Bus bar should be fully shrouded and proper warning label should be provided.

7.4.9 Panel door gaskets, protective cover/ shrouds should be fitted. 7.4.1O Air inlet filter, ventilation with thermostat should be provided.

7.4.11 Panel installation should be done properly& sufficient support should be provided.

7.4.12 Cable glanding, termination cable support & tagging should be satisfactory 7.4.13 Panel power cables, cables glands and all components should be easily

accessible.

7.4.14 Cable tray and trunking installed properly, cover and earthing should be provided.

7.4.19 Functional test for the capacitor panel carried out & should be found satisfactory

7.4.2O Panel main tag and components identification should be by permanent labels

7.4.21 As-built drawing from panel builder should be provided in a drawing pocket in panel.

7.5- Equipment Control Panel

Equipment control panel should be checked & inspected as per approved material submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer /engineer electrical.

7.5.1 Panel supplied should be from approved vendor and as per approved material submittal.

7.5.2 Factory test certificate should be from panel builder to be verified and result to be accepted

7.5.3 Control panel dimensions & arrangements should be as per the approved drawings

7.5.4 Ratings and quantity of MCB / MCCB / ELCB should be as per approved drawings.

7.5.5 Panel power and control wiring should be as per standard drawings and requirements.

7.5.6 Rating of contactors / over load relays should be as per approved drawings.

7.5.7 Permanent identification of all components inside the control panel should be marked.

7.5.8 Wire sizes, color coding, terminations should be properly executed inside the panel.

7.5.9 Panel gaskets, bus bar shrouding, protective cover & warning label should be provided.

7.5.1O Installation of the panel should be done properly.

7.5.11 Cable size type, glanding, terminations, support & tagging should be satisfactory.

7.5.15 Earthing of the equipment and panel should be done satisfactorily.

7.5.16 Insulation resistance for power and control cables should be carried out and to be recorded.

7.5.17 Test / commissioning of system in coordination with supplier should be done & to be certified.

7.5.18 All functional checks and testing for circuits should be carried out & to be found satisfactory.

7.5.19 Panel builder “As-built drawing” should provided inside the panel in drawing pocket

7.6- Isolators

Equipment control panel should be checked & inspected as per approved material Submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer /engineer electrical.

7.6.1 Isolators should be from approved vendor as per approved material submittal

7.6.2 Mounting arrangement of isolator unit should be satisfactory (Recess / Surface).

7.6.3 Isolator should be suitable for the location (check IP rating). 7.6.4 Isolator duty ampere rating should be as per approved drawing and

requirements. 7.6.5

7.6.6 Isolator unit location should be satisfactory & easily accessible for operation

7.6.7 Gasket (if any), protective cover / shrouds (if applicable) should be fitted. 7.6.8 Isolator unit installation should be done properly & sufficient support to be

provided.

7.6.9 Power cable glanding, termination, cables support & tagging should be satisfactory.

7.6.1O Installation of the concealed ducts for isolator cables should be satisfactory ( If applicable).

7.7- Electrical Manholes (EMH)

Should be checked by inspector as per shop drawing. Location, specification & size are to be checked. A co-ordination between electrical and civil is to be done as per following steps.

7.7.1 Manhole construction should be as per specification.

7.7.2 Manhole size and location should be as per approved drawing and requirement

7.7.3 Manhole inner finish should be smooth and coated with water proofing material

7.7.4 Ducts should be as per approved vendor and material submittal

7.7.5 Duct location, arrangement should be in the manholes are to be satisfactory. 7.7.6 Duct size should be such that it remains with 60% empty space after

installing the cable/wire in it.

7.7.7 Spare ducts with pull wires should be installed for future use. 7.7.8 Duct ends should not be damaged and to be provided with end bell.

7.7.9 Ducts should be utilized evenly and spare space should be available in each ducts.

7.7.1O Cable installations and neatness inside the manholes should be satisfactory. 7.7.11 Sufficient cable loops should be provided in side the Manhole (where

applicable).

7.7.12 All cable should be in the Manholes are to be identified by aluminum / stainless steel tags.

7.7.13 All ducts ends should be sealed with gasoline resistance compound. 7.7.14 Cover size should be same as manhole size & is water tight.

7.7.15 Cover should be oil-gasoline resistance gasket, greased, painted and to be tagged.

7.7.16 Cover should fit to the frame properly and no rattle cover after installation. 7.7.17 Manhole to have Arabic and English tagging, clarifying the manhole is for

Electrical.

7.8- Telephone Man Holes (TMH)

Should be checked by inspector as per shop drawing. Location, specification & size are to be checked. A co-ordination between electrical engineer and civil engineer is to be done as per following

7.8.4 Ducts should be as per approved material submittal.

7.8.5 Duct location, arrangement in the manholes should be satisfactory. Electrical wiring and telephone wiring should not be mixed.

7.8.6 Duct size should be as per approved drawing and to be sufficient to install cables.

7.8.7 Spare ducts with pull wires should be installed for future use. 7.8.8 Duct ends should be not damaged and to be provided with end bell. 7.8.9 Ducts should be utilized evenly and spare space to be available in each

ducts

7.8.10 Cable installations and neatness inside the manholes should be satisfactory.

7.8.11 Signal / Data cables inside Manhole should be installed in flexible conduits. 7.8.12 Sufficient cable loops should be provided in side the Manhole (where

applicable).

7.8.13 All cable in the Manholes should be identified by aluminum / stainless steel tags.

7.8.14 All ducts ends should be sealed with gasoline resistance compound. 7.8.15 Cover size should be same as manhole size & is water tight.

7.8.16 Cover should be oil-gasoline resistance gasket, greased, painted and to be tagged.

7.8.17 Cover fit to the frame should be properly and should not rattle cover after installation.0.

7.9- Light Fittings (indoor fitting, Wall light & Emergency Lights)

Installation is to be checked & inspected as per specification, approved drawings & Approved submittal by the inspector. Engineer has to ensured that the following procedure is strictly followed.

7.9.7 Fitting and Ceiling rose / light point should be easily accessible and to be replaceable.

7.9.8 Control Transformer (if any) should be install properly and to be easily accessible.

7.9.9 wiring should be as per drawing (Plug in Ceiling rose, heat resistance cable, etc).

7.9.1O Earth connection to the fittings should be done properly.

7.9.11 Conduit sizes are adequate & should be as per the specification.

7.9.12 Conduit installation to the ceiling roses / light points should be satisfactory. 7.9.13 Conduits above false ceiling should be clamped adequately (others

concealed).

7.9.14 Switch / Automatic controls, circuit wiring and wire sizes should be as per the drawing.

7.9.15 Light fitting surface, trims and diffusers should be clean. They are to be free from dust and stains.

7.9.16 Light fitting should be complete in all respects (annular glass/ emergency kit etc.).

7.9.17 Light fitting and circuit wiring should be tested for functionality. 7.9.18 Emergency light / kit should be tested for functionality.

7.10- Light Switches & Power Switches

Installation is to be checked & inspected as per specification, approved drawings & approved submittal by the inspector. Engineer should ensure that the following procedure is strictly followed.

7.10.1 Switches should be as per specification and approved make and should be strictly as per approved material submittal.

7.10.2 Switch rating, type, poles rocker design and gang should be as per the drawing & approved specification.

7.10.3 Location & mounting height of switch should be as per local authority rules and regulation as well as per approved drawings and IP rating should be as applicable.

7.10.4 Wiring and wire type, size, color coding etc. should be as per drawing and specification.

7.10.5 Installation and finishing around the switch should be aesthetically satisfactory

7.10.6 Phase barrier and warning labels should be provided (If applicable). 7.10.7 Power switches should be with light indicator.

7.10.8 Brushed / stainless steel front plate accessory should be provided (where specified).

7.10.9 Power switches should be with approved flex outlet / connection unit to be as per drawing.

7.10.1O Location, Installation & finishing around flex outlet / connect unit should be satisfactory.

7.11- Switched Sockets

Installation is to be checked & inspected as per specification, approved drawings & approved submittal by the inspector. Engineer should ensure that the following procedure is strictly followed.

7.11.1 Sockets should be as per specification, make and as per approved material submittal & sample provided.

7.11.2 Sockets rating, type & gang should be as per the drawing & specification. 7.11.3 Location & mounting height of sockets should be as per local authority’s

rule and regulation and as per specification / requirement reflected in approved drawings.

7.11.4 Back box installation and conduit arrangement / termination should be satisfactory.

7.11.5 Socket suitable for location (IP Ratings) and should be as per drawing. 7.11.6 Wiring(ring/ radial), wire type, size, color coding etc. should be as per

drawing and standard.

7.11.7 Earth connection to the socket & earth loop to back box should be done properly and satisfactorily.

7.11.8 Sockets should be switched type with Sutter and to be red light indicator (If applicable).

7.11.9 Installation and finishing around the socket should be aesthetically satisfactory.

7.11.1O Installation and wiring should be skirting & trucnking / floor box should be satisfactory (if applicable).

7.11.11 Brushed / stainless steel front plate accessory should be provided (where specified).

7.11.12 Installation / Location of socket above false ceiling (if applicable) should be satisfactory.

7.12- Generator (As stand by power source)

Installation is to be checked & inspected as per IEE rules, approved drawings & Engineer has to ensure that the following procedure is strictly followed.

7.12.1 Generator supplied should be from approved vendor /make and capacity is as per approved material submittal.

7.12.2 Factory test certificate from manufacturer should be verified and values to be accepted

7.12.3 Generator set should be as per approved, specification and capacity.

7.12.4 Technical characteristics of generator should be as per drawing / specification.

7.12.5 Installation of generator should be done as per local authority’s /IEE rules regulation & should be certified by generator dealer/supplier.

7.12.6 Linear vibration isolator & anti vibration pad should be provided and leveling of the machine should be checked by calibrated level indicator and expert engineer only.

7.12.7 Silencer and muffler should be provided.

7.12.8 Flame/ spark arrestor and rain cap at end of exhaust pipe should be provided.

7.12.9 Type, rating of batteries and battery charger & controls should be verified. 7.12.1O Fuel level gauge, Fuel low level alarm and shut down should be verified.

7.12.11 Double earthing of Engine-generator frame and single earthing for fuel tank should be done satisfactorily. Earthing should be with flat copper plate /copper wire and should be as per IEE rules.

7.12.12 Generator neutral earthing should be done and tested. Earthing (Resistance) value to be recorded periodically and during commissioning. The earthing value should be less then 01 OHM when measure between two earthing

7.12.16 Installation resistance for alternator (with - outgoing cable disconnected), and out going cables (in open end status) should be carried out and to be recorded.

7.12.17 Startup and commissioning should be carried out by authorized person from dealer/supplier and all parameters are to be recorded such as frequency, voltage, RPM, engine oil pressure and fuel governor function.

7.13- Transformer & Ring Main Unit (RMU)

The Responsible Engineer must Ensure that the installation of Transformer & Ring Main Unit is done as per the rule & regulations of electricity authority & should be checked as follows

7.13.1 Transformer & RMU supplied should be as per approval by Electricity authority.

7.13.2 Transformer & RMU rating should be as per approved drawings and specification.

7.13.3 Installation should be done satisfactory & approved by authority (if done by contractor)

7.13.4 Power cable glanding, termination, cable support & tagging should be satisfactory.

7.13.5 Covered cable tray and trucking should be installed properly. Proper /satisfactory Earthing should be provided.

7.13.6 Installation resistance for transformer LV cables should be carried out (In open end status) and to be recorded.

7.13.7 Transformer & RMU body earthing should be satisfactory and as per authority / IEE regulation.

7.13.8 Transformer neutral earthing should be satisfactory and as per authority regulation. Neutral and body earthing should not be mixed. The earthing resistance value when measured should be less 01 OHM.

7.14- Equipment Earth pits / Neutral Earth pits (EP)

Inspection is to be conducted as per the following procedure & should be cross checked by the responsible Engineer as follows

7.14.1 Earth pit construction should be as per specification.

7.14.2 Earthing materials should be from approved make and to be as per approved submittal.

7.14.3 Earth pit location should be as per approved drawing / requirement and should be satisfactory.

7.14.4 Copper earth rod (size), cable clamps (material) and accessories (make) should be as per approved material submittal.

7.14.5 Earth cable size should be as per approved drawing & standards. Earthing cable installation should be duct/conduit as applicable and to be

satisfactory.

7.14.6 Spacing between parallel rods should be as per specified in the drawing & should be more then length of rods.

7.14.7 Earth termination in pit should be visible, accessible, greased, tape and to be shrouded. White grease (white jelly) to be used.

7.14.8 Back filling of earth pit should be done properly.

7.14.9 Pit should be cover fit flush with finish floor / tile level without any rattle. 7.14.10 Earth pit cover (for transformer / generator - neutral earth) should be

marked by paint. Other earthing points should be given number if more then one earthing point exits and to be recorded for future reference.

7.14.11 Earth resistance test should be carried out, to be recorded and should be found with in limits ( 01  OHM).

7.15- Fire Alarm System

7.15.4 Mounting arrangements and installation of fire alarm panel should be satisfactory.

7.15.5 Cable glanding, terminations, & tagging in the fire alarm panel should be satisfactory.

7.15.6 Fire alarm panel internal and external surface should be clean.

7.15.7 Cable for out door (XLPE armored) / in door (FP200) and correct size should be used.

7.15.8 Fire sensor terminal box / Cover (From approved manufacture) should be in white color.

7.15.9 Junction box location and ducts location should be as per drawing.

7.15.1O Cable glanding, terminations & tagging inside junction box should be satisfactory.

7.15.11 Fire alarm detectors, Break glass, and bell their numbers and location should be as per approved drawing / specifications.

7.15.12 Location of fire alarm devices should be as per drawing and requirement. 7.15.13 Bell and Break glass installed out door should be W/P type (where

applicable).

7.15.14 Installation and wiring of fire alarm devices should be as per drawing / satisfactory.

7.15.15 Wires for devices installed should be in conduit and concealed (except above false ceiling).

7.15.16 Installation resistance for cables should be carried out and to be recorded. 7.15.17 Test / Commissioning of system in co-ordination with supplier should be done

& to be certified. The system should be connected through telephone line to local fire station where necessary and mandatory as per local rules.

7.15.18 Functional test should be carried out, should be recorded and to be found satisfactory

7.15.19 Engraved zone chart should be provided adjacent to fire alarm panel.

Emergency telephone numbers of fire station should be written with bold letters on or near to fire alarm system/panel.

7.16- Voice Data / Structured Cabling System

The responsible Engineer must ensure that the following procedure is strictly followed and checked

7.16.1 Structured cabling system installation should be done by approved contractor by Etisalate or DU.

7.16.2 Location, size and installation of Etisalat & intermediate DP should be satisfactory.

7.16.3 Recessed cabinet for Etisalat & intermediate DP should be satisfactory 7.16.4 Patch panel size, location and installation should be satisfactory.

7.16.5 Cable glanding, terminations & tagging to / in patch panel should be satisfactory.

7.16.6 Patch panel internal & external surface should be clean.

7.16.7 Cables for outdoor / indoor used should be correct and as per approved submittal.

7.16.8 Telephone junction box / cover (from approved manufacturer) should be in white color.

7.16.9 Junction box locations and ducts should be as per approved drawing. 7.16.10 Cable glanding / terminations & tagging inside junction box should be

satisfactory.

7.16.11 Voice / Data socket & locations should be as per drawings / specification. Identification tags should be provided.

7.16.12 Front plate accessories and voice data sockets to be as per approved submittal.

7.16.13 Installation & wiring of voice data device should be as per drawings and satisfactory.

7.16.14 Wires for devices should install in conduit and concealed (except above false ceiling).

7.16.15 DOMS unit location, installation and wiring should be satisfactory. 7.16.17 Cables & other elements installed should be as per automation drawing /

7.17- Intruder Alarm System

The responsible Engineer must ensure that the following procedure is strictly followed and checked

7.17.1 System should be supplied from approved vender and should be as per approved material submittal.

7.17.2 Panel, keypad, sensor, LIM & motion detector location should be as per drawings.

7.17.3 Panel and LIM above false ceiling should be easily accessible / replaceable. 7.17.4 Ceiling mounted glass break sensors should cover the entire glass area. 7.17.5 Cabling, terminations & tagging of intruder elements should be satisfactory.

7.17.6 Cable installed should be in conduits and concealed (except above false ceiling).

7.17.7 Intruder alarm buzzer location should be as per drawing & outdoor use (If applicable).

7.17.8 Intruder alarm programmed should be as per user requirement.

7.17.9 Test / Commissioning of system in co-ordination with supplier should be done & to be certified and recorded.

7.17.10 Functional test should be carried out and recorded and to be found mandatory satisfactory.

7.17.1 Engraved zone chart for intruder system should provide adjacent to key pad.

7.18- CCTV System

The responsible Engineer must ensure that the following procedure is strictly followed and checked

7.18.1 System should be supplied from approved vendor & should be as per approved material submittal

7.18.6 Ceiling mounted and pole mounted cameras should installed properly. 7.18.7 System cable installation, termination & tagging should be satisfactory. 7.18.8 Power cable installation, termination and tagging for cameras should be

satisfactory.

7.18.09 Installation of monitors and switching devices should be satisfactory and as per user requirement.

7.18.10 CCTV system should be programmed as per requirement & specification.

7.18.11 Software integration should be satisfactory.

7.18.12 Camera resolutions and picture quality on the monitor should Be satisfactory.

7.18.13 Test / Commissioning of system should be coordination with supplier done & to be certified.

7.18.13 Functional tests should be carried out, should be recorded and to be found satisfactory.

7.19- Building Management and Control System

Installation is to be done in co-ordination with the supplier. The installation is to be Inspected & checked using the following procedure which is to be confirmed by the responsible Engineer

7.19.01 All wiring and tubing should be properly supported and run in a neat and workmanship manner.

7.19.02 All wiring and tubing exposed and in equipment rooms should run parallel to or at right angles to the building structure.

7.19.03 All piping and wiring with in enclosures should be neatly bundled and to be enclosed to prevent obstruction to devices and terminals.

7.19.03 Soft copy of Master computer programs and data files is to be preserved.

(Including all control programs, initial approved parameters, settings, English descriptors, and color graphics complete with dynamic dispersed data)

7.19.06 All instruments, switches, sensors, transmitters etc. should be suitably wired and mounted. They are to be protect them from vibration, moisture, mechanical damages and temperature variations.

7.19.07 All equipment and panels should be identified, with permanently mounted tags.

7.19.08 Auxiliary pilot duty relays on all starters is require for control function. 7.19.09 All wiring should be as recommended by system supplier and manufacturer. All communication cables/wire should be of low impedance type and should be screened type.

7.20.10 All blower motors for AHUs connected to BMS system should be speed controlled with frequency control device.

7.21.11 if system is monitored and controlled type then it should be connected to PC as specified and directed by user.

7.19.12 Functional test should be carried out and to be found satisfactory.

7.20- Public Address and Music System

The responsible Engineer must ensure that the following procedure is strictly followed and checked.

7.20.1 System supplied should be from approved vendor and make and as per approved material submittal.

7.20.2 Speakers for public address and music system location should be as per approved drawing.

7.20.3 Public address system cabinet and control installation should be as per approved drawing / requirement.

7.20.4 Radio Channel, VCD Channel, Tape channel, provided should be as per approved drawing / requirement.

7.20.5 Zoning of each area to be required by the detail design as indicated in the single line diagram.

7.20.6 PA system interlinked with the fire alarm system and provision for automatic broad cost of emergency evacuation message should be satisfactory and requirement.

7.20.7 Sound pressure level (SPL) and distribution for the various area should be satisfactory.

7.20.8 Paging microphone mounted on a table desk with illuminated push buttons for selective paging of different zone should be satisfactory.

7.20.9 Test / Commissioning of system in co-ordination with supplier should be done and to be certified

7.20.1O Functional test to be carried out, should be recorded and to be found satisfactory.

7.21- MATV System

The responsible Engineer must ensure that the following procedure is strictly followed and checked.

7.21.1 System should be supplied from approved vendor/make and as per approved material submittal

7.21.2 MATV system (head end station, Disheartens, Amplifier, Junction Boxes) etc. location should be as per drawing.

7.21.3 Numbers of satellite dishes complete with their feed horn and LNB selection of channels should be as per approved drawing / requirement. 7.21.4 Number of Antennas with their mast for AM/FM reception channels should

be as per approved drawing / requirement.

7.21.5 Head end station which houses all amplifier, receiver, modulator, invertors, , power supply units character generators etc. for a minimum of 40 numbers digital channels and in house audio, video and information channels should be as per requirement and to be satisfactory.

7.21.6 All necessary splitter boxes, line amplifies, cabling, conduits, cable trays, TV, FM outlets etc. location should be as per drawing.

7.21.7 Provision to connect the MATV system at the head end station to a minimum 10 more channel in future should be provided.

7.21.8 Splitters and tap-off boxes used with in system for distributing the signal to the outlet sockets have a minimum frequency range of 0.15 MHZ up to 2050 MHZ should be as per requirement and to be satisfactory.

7.21.9 Test / Commissioning of system in co-ordination with supplier should be done satisfactorily and to be certified.

7.21.1O Functional test should be carried out , to be recorded and should found satisfactory

7.22- Lightning Protection System

The responsible Engineer must ensure that the following procedure is strictly followed and checked

7.22.1 System supplied should be from approved vendor/make and as per approved material submittal.

7.22.2 Lightning system location should be as per drawing.( at the highest point of the building)

7.22.3 Air terminal networks, down conductors, earthing network, equiv. potential bonding of all metal works, all related accessories,

thermo weld joints and terminations and connections should be satisfactory 7.22.5 Protection of all electronic equipment with in the building against the

transient over voltage caused by lightning should be provided.

7.22.6 Sufficient number of rods, resistance to earth not exceeding 10 ohm is satisfactory.

7.22.7 Direct paths from air terminals to ground earth connections should be done. Avoid sharp bends & narrow loops.

7.22.8 Testing / Commissioning of system in co-ordination with supplier should be done and certified.

INSPECTION METHODOLOGY

(MECHANICAL)

8-

INSPECTION METHODOLOGY-(MECHANICAL)

INDEX Page No.

8.1 Piping Installations 59

8.2 Sleeves & Escutcheon 60

8.3 Access Panels & Accessibility 60

8.4 Protection 60 8.5 Identification 60 8.6 Vibration Control 61 8.7 Mechanical Insulation 61 8.8 Valves 61 8.9 Drainage Specialties 62

8.10 Fire Fighting System 62

8.11 Fire Pumps 63

8.12 Plumbing Pumps 63

8.13 Chilled Water Pumps 64

8.14 Chilled Water Piping 64-65

8.15 Chillers 65-66

8.16 Air Handling Unit. 66

8.17 Fan Coil Units 67

8.18 Duct Work 67

8.19 Air Outlets 68

8.20 Air Filtration 68

8.21 Coordination / Roof Works 69-70

8.22 External Services 70

8.23 Testing & Commissioning 71-74

8.1- Piping Installation

8.1.1 Where possible, store pipe and tube inside and protected from weather

8.1.2 All piping under buildings and roads shall be encased in concrete with 150 mm cover on all sides

8.1.3 Provide thrust blocks for buried water mains, at every change in direction of the pipe

8.1.4 Provide expansion joints for all piping at building expansion joints

8.1.5 All horizontal drainage piping for sizes Ø100mm and above shall be installed with 1 % minimum slope unless otherwise indicated and 2% for sizes less than Ø100mm

8.1.6 All pipe work shall be tested hydraulically to a pressure equal to twice the working pressure. If the working pressure is greater than 600 kPa the test pressure may be one and a half times the working pressure

8.1.7 Install air vents at all high points where air may collect and not be carried by The system

8.1.8 Arrange and install piping to obtain maximum head room, avoiding structural interference

8.1.9 Install piping parallel to building walls

8.1.10 Pipes transporting hot fluids shall be installed at least 6" (150 mm) away from pipes transporting cold fluids

8.1.11 Electrical conduits shall not touch or be supported on pipe 8.1.12 Protect the open ends by using temporary plugs or caps.

8.1.13 All reductions in pipe size shall be made by using reducing fittings

8.1.14 Provide flanged or union connections for ready disconnection of piping at equipment

8.1.15 Provide drip pans below all water, or drain piping, if any, located in electrical rooms and transformer rooms

8.1.16 All piping work in finished areas shall be concealed in ceiling spaces and shafts or chased into walls.

8.1.17 Cover all temporary openings n ducts and pipes with polyethylene sheets or caps until final connection is made.

8.2- Sleeves and Escutcheon

8.2.1 Escutcheons shall be provided at all penetrations of piping into finished areas. 8.2.2 Pipes, ducts and conduits shall have sleeves where they pass through walls, floors, ceilings and partitions, with minimum 12 mm clearance

8.3- Access Panels & Accessibility

8.3.1 All parts of the installation requiring periodic maintenance shall be accessible and provided with access panel

8.4- Protection

8.4.1 Fixtures and equipment shall be properly protected from damage during the construction period

8.4.2 All equipment shall be thoroughly cleaned before start-up and again before handover.

8.5- Identification

8.5.1 All piping and ductwork shall be marked in English to show the service and direction of flow.

8.5.2 Marking shall be placed at 10 m intervals on all exposed piping and ductwork and at each access panel or door.

8.5.3 All the equipments shall have a manufacturer’s name plate which shall show full details as manufacturer's name, unit and unit motors serial numbers, model numbers, date of manufacture and BS or other number.

8.5.4 All the equipments should be identified by name.

8.5.5 The schedules and schematic diagrams of all the systems shall be framed and glazed and hung in the relevant plant rooms.

8.6- Vibration Control

8.6.1 All equipments to be adequately isolated to maintain acceptable noise levels in the occupied areas of the building

8.6.2 Vibration isolators to be selected in accordance with the type of construction and the vibration/ noise generated by the selected equipment.

8.6.3 If required, approved Acoustic Consultant to ensure and implement Appropriate noise and vibration control systems and elements

8.6.4 Vibration isolation hangers should be installed with the spring as close to the ceiling as possible

8.6.5 Where ductwork passes through a wall or floor, other than when a fire damper is required, pack around the duct using a fire resistant material to ensure a sound and air-tight joint

8.7- Mechanical Insulation

8.7.1 All the insulations stored at site should be protected from dirt and moisture by Adopting proper storing procedure.

8.7.2 Fungicidal protective coatings shall be applied over external surfaces of chilled water pipes and interior and exterior surfaces of ductwork.

8.7.3 All the pipe and ductwork exposed externally to the building, installed on roof is to be insulated and clad with aluminum.

8.7.4 Diesel engine exhaust pipe and muffler shall be insulated.

8.8- Valves

8.8.1 Provide valves at inlet and outlet of equipment to isolate from the system for ease of maintenance.

8.8.2 Do not support weight of piping system on valve ends.

8.8.3 Install all valves with the stem in the upright position keeping aero marking towards direction of liquid flow.

8.8.4 Prior to flushing of piping systems, place all valves in the full-open position. 8.8.5 Provide drain valves at low points of piping systems.