General Specification for Air-Conditioning, …A2.1.2 (a) Add “Fresh Water Cooling Towers Scheme...

General Specification for Air-Conditioning, Refrigeration,

Ventilation and Central Monitoring and Control System Installation

in Government Buildings

of the Hong Kong Special Administrative Region

2012 Edition

The 2012 edition of the General Specification for Air-Conditioning, Refrigeration,

Ventilation and Central Monitoring and Control System Installation in Government Buildings

of the Hong Kong Special Administrative Region comprises updates and revisions to the

2007 edition.

The date and details for full implementation of the new General Specification for

Air-Conditioning, Refrigeration, Ventilation and Central Monitoring and Control

System Installation in Government Buildings of the Hong Kong Special Administrative

Region 2012 edition will be announced in due course. Before the aforementioned date,

the General Specification for Air-Conditioning, Refrigeration, Ventilation and Central

Monitoring and Control System Installation in Government Buildings of the Hong

Kong Special Administrative Region 2007 edition (Incorporating Corrigendum No.

GSAC01) will still be the Contractual Document for the captioned installation. The new

2012 edition may be viewed on the ArchSD Homepage in preparation for its full

implementation.

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MAJOR CHANGES IN THE GENERAL SPECIFICATION FOR AIR-CONDITIONING, REFRIGERATION,

VENTILATION AND CENTRAL MONITORING & CONTROL SYSTEM INSTALLATION IN GOVERNMENT

BUILDINGS OF THE HONG KONG SPECIAL ADMINISTRATIVE REGION – 2012 EDITION

Old Ref No. New Ref. No. Major Changes

The changes in the Corrigendum No. GSAC01 for the General Specification for Air-conditioning, Refrigeration, Ventilation and Central

Monitoring and Control System Installation in Government Building of the Hong Kong Special Administrative Region 2007 Edition are

incorporated into the 2012 Edition.

Clauses in

Section A, B,

C, D, E, F, G,

H and I

Defined terms to use Capital Letter, i.e. “Site, Installations, Tender, Drawings, Provisional Sum”.

Clauses in

Section A, B,

C, D, E, F, G,

H and I

Replace “Contractor” by “A/C Contractor”.

Table of

Contents,

Clauses in

Sections A,

Replace “Works” by “Installations” i.e. “Scope of Works” to “Scope of Installations”.

Clauses in

Section A

Replace “Chapter” by “Cap.”.

Clauses in

Section A, B,

C, D and F

Replace “Fire Services Department” by “FSD”

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Clauses in

Section A, B,

C, E, F and I

Replace “Electrical and Mechanical Services Department” by “EMSD”

Clauses in

Section A, B,

C, H and I

Replace “Contract Documents” by “Contract”.

Clauses in

Section A, B,

C, E and F

Replace “Contract Drawings” by “Drawings”.

Clauses in

Section A, B

and C

Replace “building contractor” by “Building Contractor”.

Clauses in

Section A, B,

C, D, F and I

Replace “end” by “expiry”.

Clauses in

Section A, B,

C, D, F and I

Replace “maintenance period” by “Maintenance Period”.

TABLE OF CONTENTS

A1.1 A1.1 Replace “Installation to comply with this General Specification” by “Installations to comply with this

General Specification”.

A1.2 A1.2 Replace “Scope of Works” by “Scope of Installations”.

A3 A3 Replace “EXECUTION OF WORKS” by “EXECUTION OF INSTALLATIONS”.

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A3.2 A3.2 Replace “Programme of Works” by “Programme of Installations”.

A3.4 A3.4 Replace “Coordination of Contract Works” by “Coordination of Contract Installations”.

PART A – SCOPE AND GENERAL REQUIREMENTS

SECTION A1 – SCOPE OF SPECIFICATION

A1.1 A1.1 Replace “air-conditioning refrigeration, ventilation and central monitoring and control system installation”

by “Air-conditioning, Refrigeration, Ventilation and Central Monitoring and Control System Installation”.

Replace “……it is not overridden by the General Conditions of Contract, Special Conditions of Contract,

Particular Specification for the Works, Drawings and…..” by “….it is not overridden by the Conditions,

Particular Specification, Drawings and ….”.

A1.2 A1.2 Replace “Works” by “Installations”.

Replace “installation” by “Installations”.

A1.3 A1.3 Replace “ In this General Specification, the following ….” by “In this General Specification, all words and

expressions shall have the meaning as assigned to them under the Conditions unless otherwise provided

herein. The following …..”.

A1.3.1 A1.3.1 Add the definition of “A/C Contractor”.

Replace the definition of “Architect” as “The Architect or the Maintenance Surveyor or the Supervising

Officer defined in the Contract as appropriate”.

Replace the definition of “Building Contractor” as “The Contractor employed by the Employer for the

execution of the Building Works or the Specialist Contractor separately employed by the Employer to

execute the Specialist Works as appropriate”.

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Delete “Contract” and add the definition of “Conditions”.

Delete “Contractor”.

Add the definition of “Electrical General Specification”.

Delete “Government”.

Delete “HKSAR”.

Add the definition of “Installations”.

Delete “or equivalent standards”.

Replace the definition of “Particular Specification” as “The specifications drawn up specifically for the

Installations of a particular project”.

Add the definition of “Proprietary brand name materials or products”.

Replace the definition of “Tender” as “The Contractor’s tender for the Contract or the Nominated

Sub-contractor’s tender for the Nominated Sub-contract as appropriate”.

A1.3.1 A1.3.1 To delete Terms and Definitions “HCF”.

SECTION A2 – STATUTORY OBLIGATIONS AND OTHER REQUIREMENTS

A2.1 A2.1 Rephrase the first paragraph as “The Installations shall conform in all respects with the followings:-“.

A2.1.1 A2.1.1 Replace “Statutory Obligations” by “All Enactments and Regulations, in particular, the A/C Contractor’s

attention is drawn to the followings:”.

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A2.1.1 (a) A2.1.1 (a) Replace “Building (Ventilating System) Regulation under Buildings Ordinance (Hong Kong)” by

“Building (Ventilating Systems) Regulations, Building Ordinance (Cap.123)”.

A2.1.1 (f) A2.1.1 (f) Replace “Air Pollution Control Ordinance” by “Air Pollution Control Ordinance (Cap. 311)”.

A2.1.1 (g) A2.1.1 (g) Replace “Ozone Layer Protection” by “Ozone Layer Protection Ordinance (Cap. 403)”.

A2.1.2 (a) –

(p)

A2.1.2 (c) – (r)

Re-number the sub-clause.

A2.1.2 (a) Add “Fresh Water Cooling Towers Scheme for Air Conditioning Systems (FWCT Scheme) published by

the EMSD”.

A2.1.2 (b) Add “Code of Practice for Water-cooled Air Conditioning Systems published by the EMSD”.

A2.1.2 (d), (e) A2.1.2 (f) To change the Code of Practice for Energy Efficiency of Electrical Installations and Code of Practice for

Energy Efficiency of Air Conditioning Installations to Code of Practice for Energy Efficiency of Building

Services Installations in Building.

A2.1.2 (a), (d) A2.1.2 (c), (f) Replace “Electrical and Mechanical Services Department, the Government of the HKSAR” by “EMSD”.

A2.1.2 (b), (c) A2.1.2 (d), (e) Replace “Fire Services Department, the Government of the HKSAR” by “FSD”.

A2.1.2 (f), (g) A2.1.2 (g), (h) Replace “Architectural Services Department, the Government of the HKSAR” by “ArchSD”.

A2.1.2 (i) A2.1.2 (j) To delete the edition of the standard and add “issued by Prevention of Legionnaires’ Disease Committee,

the Government of the HKSAR”.

A2.1.3 (c) A2.1.3 (c) Replace “Service” by “Services”.

A2.1.3 (d) A2.1.3 (d) Replace “Construction Site (Safety) Regulations” by “Construction Sites (Safety) Regulations, Factories

and Industrial Undertakings Ordinance (Cap. 59)”.

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A2.1.4 A2.1.4 Replace “BS, BS EN, ISO Standards, IEC Standards and Codes of Practice, etc. shall be deemed to include

all amendments, revisions and standards superseding the standards listed herein, which are current at the

closing date of the tender of the Contract unless otherwise specified.” by “BS, BS EN, ISO Standards,

IEC Standards and Codes of Practice, etc. shall be deemed to include all amendments, revisions and

standards superseding the standards listed herein, which are published before the date of first tender

invitation for the Contract or the Nominated Sub-contract (as appropriate)unless otherwise specified.”.

Replace “Works” by “Installations”

A2.2 A2.2 Replace “The documents forming the Contract are to be taken as mutually explanatory of one another but

in case of ambiguities or discrepancies the same shall be explained by the Architect who shall issue to the

Contractor instructions clarifying such ambiguities or discrepancies.” by “The documents forming the

Contract are to be taken as mutually explanatory of one another but in case of ambiguities or discrepancies

the same shall be dealt with in accordance with the Conditions.”

SECTION A3 – EXECUTION OF INSTALLATIONS

A3.2 A3.2 Replace “Works” by “Installations”.

Replace “tender” by “Tender” in the first paragraph.

Replace “…as required by the Architect” by “…as directed by the Architect” in the last paragraph.

A3.2 (c) A3.2 (c) Replace “to Site” by “to the Site”.

A3.3 A3.3 To add a clause to specify the recoverable cost for defective builder’s work which shall be recoverable by

Employer from the A/C Contractor as a debt under the Contract or via the Building Contractor as if it is a

debt liable to the Building Contractor under the Sub-contract appropriate.

A3.4 A3.4 To change the heading “COORDINATION OF CONTRACT WORKS” to “COORDINATION OF

INSTALLATIONS”.

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Replace “…and sub-contractors” by “…and sub-contractors of the Building Contractor”.

A3.5 A3.5 Replace “…and sub-contractors” by “…and sub-contractors of the Building Contractor” and “…on Site”

by “…on the Site” in the first paragraph.

A3.6 A3.6 Replace “supervisor” by “site supervisor”.

Add “In this connection, the A/C Contractor’s attention is drawn to the Special Conditions of Contract

under the Contract for the requirements relating to Qualified Tradesmen and Intermediate Tradesmen” to

the end of the second last paragraph.

Replace “on site” by “on Site”.

A3.7 A3.7 To add the sample board requirements for submission items.

Replace “Within 6 weeks of the acceptance of his tender and prior to the commencement of Works, the

Contractor shall submit to the Architect for approval in a reasonable time a sample board of essential

components proposed to be used in the Contract. However, the Contractor may request the Architect in

writing for an extension of time, if 6 weeks are practically insufficient.” by “Within 6 weeks of the

acceptance of his Tender and prior to the commencement of the Installations, the A/C Contractor shall

submit to the Architect for approval a sample board of essential components proposed to be used in the

Contract. However, the A/C Contractor may request the Architect in writing for a longer period for the

submission, if 6 weeks are practically insufficient.”.

Replace “Works” by Installations”.

Replace “…and the Contractor shall deliver the board to the site office for reference.” by “…and the A/C

Contractor shall deliver the board to the site office of the Architect’s Representative for reference.”

A3.9 A3.9 Replace “representative of the Architect” by “Architect’s Representative”.

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Replace “Materials and equipment delivered to Site and paid for in interim payment shall be Employer’s

property. Such materials and equipment shall not be removed from Site without the approval of the

Architect in writing and appropriate deduction shall be made in the next interim payment in accordance

with the Contract.” by “Materials and equipment delivered to Site are Employer’s property. Such materials

and equipment shall not be removed from Site without the prior approval of the Architect in writing.”.

A3.10 A3.10 Delete “…until finally inspected, tested and accepted…” from the first paragraph.

Replace “…Architect’s representatives…” by “…Architect’s Representatives…” in the second paragraph.

A3.13.1 A3.13.1 To add a new requirement for submission of label schedule and standardize the label format including

Chinese translations among different projects.

Replace “Civil Service Bureau” by “Civil Service Bureau of the Government of the HKSAR”.

A3.13.4 A3.13.4 Replace “Factories & Industrial Undertakings (Guarding an Operation and Machinery) Regulations,

published by the Labour Department” by “Factories & Industrial Undertakings (Guarding an Operation and

Machinery) Regulations (Cap. 59Q)”.

A3.14.1 A3.14.1 Replace “…in this General Specification….” by “…in this General Specification which are published

before the date of first tender invitation for the Contract or the Nominated Sub-contract as appropriate.”.

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A3.14.4 A3.14.4 Revised the whole section as follows:

“Subsequent to the award of the Contract or the Sub-contract as appropriate, and only in exceptional

circumstances where it is demonstrated in writing by the A/C Contractor that the original equipment

offered cannot be obtained, the Architect may, subject to the Conditions, consider and approve, in writing,

alternative equipment and materials having equivalent functions or performance proposed by the A/C

Contractor provided always that these are fully in compliance with the relevant Specifications and

Drawings and do not impose any additional contractual or financial liabilities onto the Employer.

Any redesign, alteration, or abortive work of the structure, partitions, foundations, piping, ductwork, wiring

or any other part of the mechanical, electrical or architectural layout as a result of the alternative equipment

and materials proposed by the A/C Contractor shall be agreed with the Architect under a supplementary

agreement.

In the event that the approved alternative equipment or material is lower in price than the original offered

equipment or material, the net difference in price between the original offered equipment or material and

the approved alternative equipment or material with the executed quantities of the relevant work item shall

be deducted from the Contract Sum in accordance with the Contract. The Contract Sum, however, shall not

be adjusted where the approved alternative equipment or material is higher in price than the original

offered equipment or material.”.

A3.14.5 A3.14.5 Replace “air conditioning installation” by “Installation”.

A3.15.1 A3.15.1 Replace “Work shall be carried out in such a manner as to comply with all the regulations, ordinances, etc,

as listed in Sub section A2.1.3 of this General Specification together with any amendments made thereto.”

by “Work shall be carried out in such a manner as to conform in all respects with all the regulations,

ordinances, etc.”.

A3.15.2 A3.15.2 Replace “installations” by “Installations”.

A3.15.3 A3.15.3 Replace “drawings of the project” by “Drawings”.

A3.15.3 A3.15.3 Replace “installation” by “Installation”.

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Replace “Air Conditioning installation” by “Installations”.

A3.15.4 A3.15.4 Replace “Electricity Ordinance” by “Electricity Ordinance (Cap. 406) and “Code of Practice for the

Electricity (Wiring) Regulations” by “Code of Practice for the Electricity (Wiring) Regulations (Cap.

406E).

A3.15.7 A3.15.7 To change the edition of ISO9001 to 2008.

A3.16 A3.16 Replace “work” by “Installations”.

Replace “on site” by “on Site” in the second paragraph.

A3.17 A3.17 Replace “installation” by “Installations”.

SECTION A4 – DRAWINGS AND MANUALS

A4.2.1 A4.2.1 Replace “Works” by “Installations”.

Replace “…unless otherwise specified in the Contract…” by “…unless otherwise specified in the Contract

or the Sub-contract as appropriate…” in the third paragraph.

Replace “…the site” by “…the Site” in the last paragraph.

A4.2.2 A4.2.2 Replace “Contractor’s ‘Installation Drawings’ and/or ‘Shop Drawings’ shall be prepared to …” by

“A/C Contractor’s installation drawings and/or shop drawings shall be prepared to …”.

To change “As-installed” record drawings to “As-built” record drawings.

A4.2.3, A4.2.7,

A4.3.3

A4.2.3,

A4.2.7 , A4.3.3

Replace “Works” by “Installations”.

A4.2.3 (a) A4.2.3 (a) Replace “Installation Drawings” by “Installation drawings”.

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Replace “…the Employer’s own Contract Drawing standard” by “…the Drawing’s standard”.

A4.2.3 (b) A4.2.3 (b) Replace “Installation Drawings” by “installation drawings” in the first paragraph.

Replace “Ductwork Drawings” by “Ductwork drawings” in the third paragraph.

A4.2.3 (c) A4.2.3 (c) Replace “Air handling unit plant Installation...” by “Air handling unit plant installation…” in the first

paragraph.

A4.2.3 (e) A4.2.3 (e) Replace “Installation Drawings” by “installation drawings”.

A4.2.3 (f) A4.2.3 (f) Replace “Shop / Installation Drawings…” by “Shop drawings / installation drawings…”.

A4.2.3 (g) A4.2.3 (g) Replace “…shall allow in the tender for taking effective responsibility for the co-ordination of…” by

“…shall allow in the Tender for the co-ordination of…” in the first paragraph

Replace “…which other Contractors involved in the plant room are to comply with. The Contractor shall

on behalf of the Architect also allow for the cross checking of …” by “…which other contractors involved

in the plant room are to comply with. The A/C Contractor shall also be responsible for the cross checking

of …”.

A4.2.6.1 A4.2.6.1 Replace “Works can only be commenced upon…” by “The Installations shall only be commenced

upon…”.

A4.2.7 A4.2.7 Replace “…execution of work…” by “…execution of Works…” in the last paragraph.

A4.3.1 A4.3.1 Replace “…the issuance of the certification of completion to the Architect…” by “…the issuance of the

certification of completion in accordance with the Contract to the Architect…” in the first paragraph.

Replace “…set out in the Preliminaries of the Bills of Quantities of the Specification Preliminaries shall

be…” by “…set out in the Contract shall be …”.

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A4.4.1, A4.4.5

(d), (f), (g),

A4.4.6

A4.4.1, A4.4.5

(d), (f), (g),

A4.4.6


A4.4.3 A4.4.3 Replace “…issuance of the certificate of completion” by “…issuance of the certificate of completion in

accordance with the Contract”.

Replace “The Contractor shall submit 2 sets of the first draft of the User Manual to the Architect for

comment at least 56 calendar days before the date of completion.” by “The A/C Contractor shall submit

2 sets of the first draft of the User Manual to the Architect for comment at least 56 days before the

prescribed or extended date for completion of the Works.”.

A4.4.4 (a) A4.4.4 (a) Replace “name” by “names”.

PART B - GENERAL TECHNICAL REQUIREMENTS (INSTALLATION METHODOLOGY)

SECTION B1 – AIR CLEANING EQUIPMENT

B1.1.3 B1.1.3 Replace “…all air handling equipment at the time of practical completion…” by “…all air handling

equipment at the date of the substantial completion stated in the certificate of completion issued in

accordance with the Contract…”.

Replace “…the Contractor shall provide at least 4 extra sets of each type of installed filters for spare and be

responsible for the replacement of filters when necessary during the maintenance period. One of these four

sets of filters shall be…” by “…the A/C Contractor shall provide at least 4 extra sets of each type of

installed filters for spare and replacement. The A/C Contractor shall be responsible for the replacement of

filters when necessary during the Maintenance Period. At least one set of filters shall be…”

B1.12, B1.13,

B1.15, B1.16,

B1.17

B1.12, B1.13,

B1.15, B1.16,

B1.17


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B1.17 B1.17 Replace “on site” by “on Site”.

SECTION B2 – DUCTWORK

B2.1 B2.1 Replace “ on site” by “on Site”.


B2.10 B2.10 To change the Code of Practice for Energy Efficiency of Air Conditioning Installations to Code of Practice

for Energy Efficiency of Building Services Installations in Building.

B2.10 B2.10 Replace “installation” by “Installations”.

SECTION B3 – AIR HANDLING AND TREATMENT


SECTION B4 – AUTOMATIC CONTROL

B4.1.5 (a) (iv) Add a sub-clause “For cooling tower system installed with multiple cooling towers and/or standby cooling

tower(s), sequence control shall be provided to allow each cooling tower to be operated at least one hour

per week.”

B4.1.6 B4.1.6 To change the heading “Control of Primary Air Intake Unit (PAU)” to “Control of Primary Air Handling

Unit (PAU).

B4.5 B4.5 Replace “installation” by “Installations”

SECTION B5 – CENTRAL CONTROL AND MONITORING SYSTEM (CCMS)

B5.1.2 B5.1.2 Replace “installation” by “Installations”

B5.1.2 (i) B5.1.2 (i) To change the edition of ISO/IEC 1989 to 2009.

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B5.1.3, B5.1.5,

B5.4.2, B5.5.2,

B5.5.4

B5.1.3, B5.1.5,

B5.4.2, B5.5.2,

B5.5.4

Replace “installation” by “Installations”

B5.1.9 B5.1.9 Replace “During the free maintenance period,” by “During the Maintenance Period,”.

SECTION B6 – CENTRAL REFRIGERATION MACHINE, DIRECT EXPANSION EVAPORATORS AND HEAT REJECTION

PLANT

B6.1 B6.1 Replace “…until the plant is accepted and end of maintenance period is certified complete by the

Architect.” by “until the plant is accepted at the expiry of the Maintenance Period.” in the first paragraph.

B6.2 B6.2 To change the edition of BS EN 378-2 to 2009.

B6.3 B6.3 Replace “to site” by “to Site”.


B6.14 B6.14 To change the edition of ANSI/ASHRAE 15-2007 to 2010.

SECTION B7 – ELECTRIC MOTORS AND ELECTRICAL EQUIPMENT

B7.1 B7.1 Replace “installation” by “Installations”.

SECTION B8 – NOISE AND VIBRATION CONTROL

B8.4.2 B8.4.2 Replace “installation” by “Installations”.

B8.5.5 B8.5.5 To change the edition of PD 5500 to 2008.

B8.7 B8.7 To change the edition of ASTM C916-85 to 2007.

B8.15 B8.15 Replace “…visiting the site…” by “…visiting the Site…”.

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SECTION B9 – PIPEWORK, VALVES, COCKS AND STRAINERS

B9.3.2, B9.8.1

,B9.15.3

B9.3.2, B9.8.1

,B9.15.3

To change the edition of ISO 7-1 to 2007.

B9.11 B9.11 Replace “The Tender/Contract Drawings indicate the size and general layout of the required pipework.”

by “The Drawings indicate the size and general layout of the required pipework.”

Replace “ The exact position may not be indicated on the drawings as for the purpose of clarity…” by

“The exact position may not be indicated on the Drawings as for the purpose of clarity…”


B9.12.1 B9.12.1 Replace “…expansion joints and anchor points are issued with the specific Contract Documents or have

previously been used to Approved Contractors for general application….” by “…expansion joints and

anchor points are used with the Contract or have previously been issued to approved contractors…”.

Replace “In-Principle” by “in-principle”.

SECTION B11 – THERMAL INSULATION


B11.2.5 B11.2.5 To change the heading “CFC, HCFC and HCF free Polyurethane Foam Insulation” to “CFC, HCFC and

HFC free Polyurethane Foam Insulation”.

B11.6.2 B11.6.2 Replace “on site” by “on Site”.

SECTION B12 – UNITARY AIR-CONDITIONER


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B12.13 B12.13 Add a note under Table B12.13 stating “Room coolers is not covered in this table, relevant clauses in

General Specification for Electrical Installation in Government Buildings shall be referred to.”.

SECTION B13– WATER HANDING EQUIPMENT


B13.3.1(a) B13.3.1(a) Add a sub-clause “The pump and motor for vertical multi-stage pump for potable application shall be of

close-coupled type.”

B13.15 B13.15 Replace “installations” by “Installations”.

B13.16,

B13.17

B13.16,

B13.17


PART C – GENERAL TECHNICAL REQUIREMENTS (MATERIAL AND EQUIPMENT SPECIFICATION)

SECTION C1 – AIR CLEANING EQUIPMENT

C1.2.1(c),

C1.11, C1.13

C1.2.1(c),

C1.11, C1.13

To change the edition of UL 586 to 2009.

C1.2.1(e) C1.2.1(e) To change the edition of BS EN 1822-1 to BS EN 1822-5 to 2009 and rename the description of the

standards as “High Efficiency Air Filters (EPA, HEPA and ULPA).

To change the edition of BS EN 1822-1 to BS EN 1822-3 to 2009.

C1.2.2(b) C1.2.2(b) To change the edition of BS 476-6 to 2009.

C1.16 C1.16 To change the editions of BS EN 61000-6-1, BS EN 61000-6-3 and BS EN 61000-6-4 to 2007.

To change BS EN 61000-3-2:2005 to BS EN 61000-6-2:2005.

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C1.17 C1.17 To change the edition of UL 1598 to 2008.

To change the edition of UL 153 to 2009.

C1.18.5 C1.18.5 Replace “on site” by “on Site”.

C1.21 C1.21 Replace “…in addition provide the following to the Architect for use by Client’s operation staff during

maintenance period:” by “…in addition provide the following to the Architect for use by Employer’s

operation staff during Maintenance Period:”.

SECTION C2 – DUCTWORK AND ACCESSORIES

C2.3 C2.3 Replace “installation” by “Installations”.

C2.4, C2.8 C2.4, C2.8 To change the edition of BS 476-6 to 2009.


C2.6.2 C2.6.2 To change the edition of ASTM G21-96 to 2009

To change the edition of NFPA-90B to 2009.

C2.6.2,

C2.11.1

C2.6.2,

C2.11.1

To change the edition of NFPA-90A to 2009.

C2.7.1.1,

C2.7.2.1

C2.7.1.1,

C2.7.2.1

To revised the clause “…and should be approved or accepted by the FSD.”

C2.7.1.3,

C2.7.2.3

C2.7.1.3,

C2.7.2.3

To revised the clause “All material shall have a class 'O' fire rating and approved or accepted by the

FSD….”

C2.8 C2.8 To revised the clause “…BS 476-7:1997 and shall be approved or accepted by the FSD…..”

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C2.11.1 C2.11.1 To revised the clause “…All Fire or Smoke dampers shall also be approved or accepted by the FSD.”

SECTION C3 – AIR HANDLING AND TREATMENT EQUIPMENT

C3.1.4(b) C3.1.4(b) To change the edition of BS ISO 10816-1 to 2009.

C3.6.3(b) C3.6.3(b) To change ARI 410:2001 to AHRI 410:2001.

C3.13.1 (a) C3.13.1(a) To change the edition of BS 5220 to 1984.

C3.13.1(d) ,

C3.14.3(b)

C3.13.1(d),

C3.14.3(b)

To change the edition of NFPA-90A to 2009.

C3.13.1(d),

C3.14.3(b)

C3.13.1(d),

C3.14.3 (b)

To change the edition BS 476-6 to 2009.

C3.13.1(d),

C3.14.3(b)

C3.13.1(d),

C3.14.3(b)

To change ISO/TR 5658-1 to 2006.

C3.15(a) C3.15(a) To change the Code of Practice for Energy Efficiency of Air Conditioning Installations to Code of Practice

for Energy Efficiency of Building Services Installations in Building.

SECTION C4 – ELECTRICAL/ELECTRIONIC (LOCALISED) CONTROL SYSTEM


SECTION C5 – CENTRAL CONTROL AND MONITORING SYSTEM (CCMS)

C5.3(h) C5.3(h) To change the edition of ISO/IEC 1989 to 2009.

SECTION C6 – CENTRAL REFRIGERATION MACHINE, DIRECT EXPANSION EVAPORATOR AND HEAT REJECTION

PLANT

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C6.4 C6.4 Replace “at site” by “at Site”.

C6.13.1 C6.13.1 To change CT STD 201:2009 to CTI STD 201:2009.

C6.13.3 C6.13.3 Replace “legionella preumophila” by “legionella pneumophila”.

C6.13.11 C6.13.11 Replace “bleed” by “bleed-off”.

C6.21.1 C6.21.1 To change the edition of BS EN 378-2 to 2009.

To change the edition of ANSI/ASHRAE 15 to 2010.

C6.28.4 C6.28.4 To change the edition of PD 5500 to 2008.

SECTION C8 – NOISE AND VIBRATION CONTROL

C8.3.12 C8.3.12 Replace “Where specified in the Contract Document, the Contractor (or the building contractor) shall

provide…” by “Where specified in the Contract, the Building Contractor shall provide…”.

C8.5.2 C8.5.2 To change the edition of ISO 7-1 to 2007.

To change the edition of PD 5500 to 2008.

C8.6 C8.6 To revised the clause “…The material used shall be approved or accepted by the FSD.”

C8.7, C8.9 C8.7, C8.9 To change the edition of UL 723 to 2008.

C8.7, C8.12.5 C8.7,

C8.12.5

To change the edition of ASTM C423 to 09a.

C8.7, C8.9 C8.7, C8.9 To change the edition of ASTM E84 to 09c.

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C8.8, C8.10,

C8.12.5

C8.8, C8.12.5,

C8.10

To change the edition of ASTM E90 to 09.

C8.12.3, C8.13 C8.12.3,

C8.13

Replace" Where required for as shown in under the Contract Documents,”by” Where required under the

Contract,”.

SECTION C9 – PIPE MATERIAL, VALVES, COCKS AND STRAINERS

C9.5 (Note 4) C9.5 (Note 4) To change the edition of BS EN 969 to 2009.

To change the edition of BS EN 598 to 2009.

C9.5(c) C9.5(c) To change the edition of ISO 7-1 to 2007.

To change the edition of ISO 6708 to 1996.


Replace “drawings” by “Drawings”.

SECTION C10 – SYSTEM MONITORING INSTRUMENT

C10.8 C10.8 To change the editions of BS EN 61000-6-1, BS EN 61000-6-3 and BS EN 61000-6-4 to 2007.

To change BS EN 61000-3-2:2006 to BS EN 61000-6-2:2005.

SECTION C11 – THERMAL INSULATION

C11.1.2,

C11.1.2(b)

C11.1.2,

C11.1.2(b)

To change the edition of BS 476-6 to 2009.

C11.2.1(d) C11.2.1(d) To change BS EN 4590:1995 to BS EN ISO 4590:2003.

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C11.2.1(e),

C11.2.1(f) ,

C11.2.8(e)

C11.2.1(e),

C11.2.1(f),

C11.2.8(e)

To change the edition of BS EN ISO 4590 to 2003.

C11.2.1(e),

C11.2.8(e)

C11.2.1(e),

C11.2.8(e)


C11.4.3(b) C11.4.3(b)

To change the edition of ASTM D882 to 09.

SECTION C13 – WATER HANDLING EQUIPMENT

C13.2 Add specification for type, materials of construction and standards for fresh water pumps for potable

application

C13.2 - C13.15 C13.3 - C13.16 Re-number the sub-clause.

C13.2.3(b)(ii) C13.3.3(b)(ii) To change the edition of ISO 2892 to 2009.

C13.13 C13.14 To rename the clause title to “Sea Water Strainers and Travelling Band Screens”.

C13.14 C13.15 Replace “particular specification” by “Particular Specification”.

PART D – INDOOR AIR QUALITY (IAQ)

SECTION D1 – GENERAL

D.1 D.1 Replace “drawings” by “Drawings”.

SECTION D2 – OUTDOOR AIR QUALITY

D.2 D.2 Replace “installation” by “Installations”.

SECTION D5 – EQUIPMENT/MATERIALS – PART C: TREAMENT AND CONDITIONING MEDIA

D.5.1.1(d)(viii) D.5.1.1(d)(viii) Replace the edition of “ASTM E84-07” by “ASTM E84-09c”

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D.5.7 D.5.7 Replace “on site” by “on Site”.

SECTION D7 – IAQ ASSESSMENT AND METHODOLOGIES

D.7 D.7 Replace “Six months after occupation of building or substantial completion.” by “Six months after the

date of occupation of the building or the date of substantial completion of the Works”.

SECTION D11 –CERTIFICATION AND REGRISTRATION

D.11 D.11 Replace “installation” by “Installations”.

Replace “…six months after occupation of the building or substantial completion the end of the

maintenance period.” by “…six months after date of occupation of the building or substantial completion

of the Works stated in the certification of completion issued in accordance with the contract and at the

expiry of the Maintenance Period.”.

Clarify the issuance of the certificate of compliance after verification of IAQ compliance..

PART E - ENERGY EFFICIENCY AND ENERGY CONSERVATION

SECTION E1 – GENERAL

E.1 E.1 Replace “All equipment provided by the Contractor for air conditioning and ventilation installation shall

conform to…” by “All equipment provided by the A/C Contractor for the Installations shall conform

to…”.

To change Codes of Practice for Energy Efficiency of Air Conditioning Installations and of Electrical

Installations to Code of Practice for Energy Efficiency of Building Services Installations in Building.

SECTION E2 – MINIMUM COEFFICIENT OF PERFORMANCE (COP) OF MAJOR AIR CONDITIONING AND VENTILATION

EQUIPMENT

E.2 E.2 To change Codes of Practice for Energy Efficiency of Air Conditioning Installations and of Electrical

Installations to Code of Practice for Energy Efficiency of Building Services Installations in Building.

SECTION E3 – MINIMUM EFFICIENCY OF FANS, PUMPS AND MOTORS

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E.3 E.3 To change Codes of Practice for Energy Efficiency of Air Conditioning Installations to Code of Practice for

Energy Efficiency of Building Services Installations in Building.

PART F – ACMV SYSTEM WATER TREATMENT

SECTION F.2 – FORM OF WATER TREATMENT

F.2 F.2 Delete the specific duration of the Maintenance Period, i.e. 12 months.

Replace “Maintenance Certificate” by “maintenance certificate”.

SECTION F.4 – SEA WATER TREATMENT BY BIOCIDES

F.4.4 F.4.4 Replace “installation” by “Installations”.

F.4.8 F.4.8 Replace “uPVC” by “UPVC”

SECTION F.6 –COOLING TOWER/CONDENSER COOLING WATER TREATMENT BY OZONE

F.6 F.6 Replace “contract maintenance period” by “Maintenance Period”.

F.6.2 F.6.2 Replace “uPVC” by “UPVC”

SECTION F.8 –WATER TESTING EQUIPMENT

F.8 F.8 Replace “contract maintenance period” by “Maintenance Period”.

SECTION F.9 –TRAINING, OPERATION AND MAINTENANCE FACILITIES

F.9 F.9 Replace “installation” by “Installations”.

PART G – PAINTING, FINISHING AND PROTECTIVE TREATMENT

G.1 G.1 To delete the edition of the General Specification for Building.

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To change “General Specification for the Air-Conditioning, Refrigeration, Ventilation and Central

Monitoring and Control System installation” to “this General Specification”.

G.7 G.7 Replace “on site” by “on Site”.

PART H – INSPECTION, TESTING AND COMMISSIONING

SECTION H1 –GENERAL

H.1 H.1 Replace “installation” by “Installations”.

Replace “…in the Contract or to those associated with others.” by “…in the Installations or to those

associated with others.” in the first paragraph.

H.1.1 H.1.1 Delete “are listed”.

H.1.1(a) H.1.1(a) Replace “Statutory Obligations and other requirements, Specifications and Standards…” by “Statutory

obligations and other requirements, specifications and standards…”.

H.1.1(b) H.1.1(b) To change “Building Services Branch Testing and Commissioning Procedure for Air-conditioning,

Refrigeration, Ventilation and Central Monitoring & Control System Installation in Government Buildings”

to “Testing and Commissioning Procedure for Air-conditioning, Refrigeration, Ventilation and Central

Monitoring & Control System Installation in Government Buildings of the Hong Kong Special

Administration Region issued by BSB, ArchSD”.

H.1.3 H.1.3 Replace “It is necessary to require the Contractor to provide...” by “The A/C Contractor is required to

provide...”.

H.1.3(a) H.1.3(a) Delete “shall be submitted”.

Replace “…that will be carried out throughout the whole contract and all necessary submissions and

approval relating to…” by “…that will be carried out throughout the Contact and all necessary submissions

and approval relating to…”.

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Replace “…and that all testing and commissioning works are complete before the completion date do the

Contract.” by “…and that all testing and commissioning works are complete before the prescribed or

extended date for completion of the Works.”.

To rename the title of the sub-clause to “Master Programme of Testing and Commissioning Works”.

H.1.3(b) H.1.3(b) Replace “…testing and commissioning results for the Architect’s approval at least four months before

commencement of testing and commissioning works...” by “…the testing and commissioning results for

the Architect’s approval at least four months before commencement of the testing and commissioning

works...”.

H.1.3(c) H.1.3(c) Delete “required to be”.

H.1.3(f) H.1.3(f) Replace “Regulation” by “Regulations”.

H.1.4 (b) H.1.4 (b) Delete “calendar”.

H.1.5 H.1.5 Replace “representatives” by “Representatives”.

Replace “Testing and Commissioning Engineer” by “testing and commissioning engineer”.

Delete “calendar”.

Replace “…after completion of commissioning and testing of the installation.” by “…after completion of

the commissioning and testing of the Installations.” .

SECTION H.2 –TESTING AND COMMISSIONING - DEFINITIONS

H.2.1 H.2.1 Replace “installation” by “Installations”.

SECTION H.3 –TESTING AND COMMISSIONING - GENERAL

H.3.2 H.3.2 Replace “Independent Commissioning Specialist” by “independent commissioning specialist”.

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H.3.3 H.3.3 Replace “Specialist” by “specialist”.

H.3.4 H.3.4 Replace “Where specified in the Particular Specification, the Contractor shall employ an approved

specialist testing and commissioning firm who shall be named in returned the Tender Documents.” by

“Where specified in the Particular Specification, the A/C Contractor shall employ the approved specialist

testing and commissioning firm named in the Tender.”.

H.3.5 H.3.5 Replace “the Provisional Testing and Commissioning Programme” by “a provisional testing and

commissioning programme”.

H.3.7 H.3.7 Replace “installation” by “Installations”.

SECTION H.4 –OFF-SITE TESTS

H.4.1 H.4.1 To change the edition of ISO 5136 to 2009.

H.4.4 H.4.4 To change BS EN 60439-1:1999 to IEC 60439-1:2004.

H.4.6 H.4.6 To change the edition of BS EN 60335-1:2006.

To change the edition of BS EN 60669-1 to 2008.

H.4.7 H.4.7 To change the edition of BS EN 378-2 to 2009

SECTION H.6 –INSPECTION AND TESTING DURING CONSTRUCTION PERIOD

H.6.1 H.6.1 Replace “the representative” by “his Representatives”.

H.6.2 H.6.2 Replace “…and subsistence expenses in the Bill of Quantities” by “…and subsistence expenses in the Bill

of Quantities or the Schedule of Rates as appropriate.”.

H.6.3 H.6.3 Delete “normally”.

SECTION H.7 –DOCUMENTS AND DATA REQUIRED FOR HAND-OVER MEETING

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H.7.2(b) H.7.2(b) Replace “on site” by “on Site”

.

H.7.2(f) H.7.2(f) Replace “Noise Control Ordinance” by “Noise Control Ordinance (Cap.400).”

PART I – OPERATION AND MAINTENANCE

SECTION I.1 –GENERAL

I.1 I.1 Delete “of the Contract”.

SECTION I.2 –LEVEL ONE SERVICES – MANDATORY RESPONSIBILITIES DURING MAINTENANCE PERIOD

I.2.1 I.2.1 Replace “…shall submit a "Training Schedule" at least two months prior to completion of installation for

the Architect’s Approval.” by “…shall submit a "Training Schedule" at least two months prior to the

prescribed or extended date for the completion of the Works for the Architect’s Approval.”.

I.2.1(a)(i) I.2.1(a)(i) Replace ” The training proposal shall be submitted at least three months prior to completion of the Contract

and shall include all aspects of operation and maintenance...” by “The training proposal shall be

submitted at least three months prior to prescribed or extended date for completion of the Works and shall

include all aspects of operation and maintenance...”.

I.2.1(a)(ii) I.2.1(a)(ii) Replace “…shall be submitted at the time of tendering:” by “…shall be included in the Tender:”.

I.2.1(a)(iv) I.2.1(a)(iv) Replace “of the Architect” by “by the Architect”.

I.2.2(a) I.2.2(a) Replace “After the installation…” by “After the Works…”.

Replace “Operation Staff” by “operation staff”.

Replace “air conditioning installation” by “Installations”.

I.2.2(b) I.2.2(b) Replace “Within one month of receiving the Architect’s substantial completion certificate...” by “Within

one month of receiving the certificate of completion issued in accordance with the Contract...”.

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I.2.2(c) I.2.2(c) Replace “The costs for the attendance, labour, materials and spare parts for repair, submission of

fault/breakdown report, etc. are deemed to have been allowed for in the submitted tender price.” by “The

costs for the attendance, labour, materials and spare parts for repair, submission of fault/breakdown report,

etc. are deemed to have been allowed for in the Tender.”.

I.2.2(d) I.2.2(d) Replace “Conditions of Contract” by “Contract”.

I.2.2(e) I.2.2(e) Replace “The Contractor shall include for making visit(s) to the installation at the end of the maintenance

period in order to facilitate the acceptance and handing over of the installations to the Employer’s

Representatives.” by “The A/C Contractor shall visit the Installations at the expiry of the Maintenance

Period in order to facilitate the acceptance and handing over of the installations to the Employer.”.

I.2.2(e) Note

(1)

I.2.2(e) Note

(1)

Delete “and with the effect of extending the contractual defect liability period.”.

I.2.2(e) Note

(2)

I.2.2(e) Note

(2)

Deleted.

I.2.2(f) I.2.2(f) Replace “The liability of the Contractor shall cover replacement of liquids or gases, oils and refrigerant …”

by “The A/C Contractor shall at his own cost cover replacement of liquids or gases, oils and

refrigerant …”.

I.2.2(g) I.2.2(g) Replace “For all Contract works under the maintenance period of ongoing Contract Maintenance…” by

“For all works during the Maintenance Period or ongoing maintenance as required…”.

Replace “Government” by “Employer”.


SECTION I.3 –LEVEL TWO SERVICES – SPECIFIED CONTRACTOR’S MAINTENANCE RESPONSIBILITIES DURING

MAINTENANCE PERIOD

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I.3 I.3 Replace “…and carry out full and comprehensive maintenance of the installation for 12 months (or for a

period as stated).” by “…and carry out full and comprehensive maintenance of the Installations during

the Maintenance Period.”.

I.3.1(d) I.3.1(d) Replace “installation” by “Installations”.

I.3.2 I.3.2 Replace “Upon practical completion of the construction work being certified by the Architect…” by “Upon

substantial completion of the Works being certified by the Architect,,,”.

Replace “Detailed information of the organisation, workshop facilities and list of contact persons of the

Contractor’s maintenance team shall be submitted to the Architect one month before the commencement

date of the maintenance period.” by “Detailed information of the organisation, workshop facilities and

list of contact persons of the A/C Contractor’s maintenance team shall be submitted to the Architect one

month before the anticipated commencement date of the Maintenance Period.”.

I.3.3(a)(i) I.3.3(a)(i) Replace “installation” by “Installations”.

I.3.4 I.3.4 Replace “Contract maintenance period” by “Maintenance Period”.

Replace “installations” by “Installations”.

Clarify the date of the preparation of Maintenance Programme and Schedule to be “before the anticipated

commencement of the Maintenance Period”.

I.3.7(a)(vii) I.3.7(a)(vii) Include “to conduct water quality and bacterial test” and “including monthly operation records in From

CT3 to EMSD” in the sub-clause.

I.3.7(a)(viii) I.3.7(a)(viii) Replace “Contract Specification” by “Specifications”.

I.3.7(c) I.3.7(c) Replace “Devices and Equipment” by “devices and equipment”.

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I.3.8 (j) Add a sub-clause “To clean, desludge and disinfect cooling towers as per requirements stipulated in the

Code of Practice for Water-cooled Air Conditioning Systems published by the EMSD.”

I.3.9(h) I.3.9(h) Replace “…building office hour” by “…building’s office hour”.

I.3.9(k) Add a sub-clause ” To arrange conducting of an annual operation and maintenance audit for fresh water

cooling towers by an independent auditor as per requirements stipulated in the Code of Practice for

Water-cooled Air Conditioning Systems published by the EMSD prior to expiry of the 12 months

maintenance period, and ensure submission of an annual audit report to EMSD.”

SECTION I.4 –SPARE PARTS AND SPECIAL TOOLS

I.4 I.4 Replace “tender” by “Tender”

Replace “Unless otherwise specified, within four months of signing the Contract...” by “Unless otherwise

specified, within four months of the acceptance of the Tender...”.

Replace “…within a period of three years of less from its installation and/or commencement of operation

excluding the Contract Testing and Commissioning Periods.” by “…with a period of three years or less

from its commencement of operation.”.

Replace “Contract maintenance period” by “maintenance period”.

Revise the paragraph “The spare parts submission shall…result in their installation not being accepted” by

“The spare parts submissions shall include diagrams or catalogue details of the parts concerned.”.

Replace “installation concerned” by “Installations”.

Replace “…arise during the free maintenance period and/or defects liability shall be replaced…” by

“…arise during the Maintenance Period shall be replaced…”.

Replace “Maintenance Certificate” by “maintenance certificate”.

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Replace “Architect’s Instruction” by “Architect’s instruction”.

Replace “ provisional sum” by “Provisional Sum”.

Replace “…during the Contract Period when requirements can be most realistically assessed taking

account of the installation as installed or still being installed.” by “during the Contract when requirements

can be most realistically assessed taking account of the Installations as installed or still being installed.”.

General Specification for Air-Conditioning, …A2.1.2 (a) Add “Fresh Water Cooling Towers Scheme...

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