Introduction
The procedures stated in this T&C Procedure cover the activities in preliminary tests and inspections, functional performance tests and the commissioning of newly completed installations and existing ones after major alteration. They are so compiled to facilitate the work of Project Building Services Engineer (PBSE) and Project Building Services Inspector (PBSI), who are appointed as the Architect’s Representatives, in the following aspects with respect to testing and commissioning
(T&C):-
(i) To vet and approve the T&C procedures proposed and submitted by the
contractor for the Electrical Installation (EE Contractor);
(ii) To witness those T&C procedures as specified; and
(iii) To accept the T&C certificates and other supporting data.
The EE Contractor shall carry out the T&C works as detailed in this T&C Procedure. Supplementary T&C plans may be proposed by the EE Contractor as appropriate and agreed by PBSE, e.g. for special equipment supplied and/or installed by the EE Contractor
The administrative requirements for T&C works are in general as specified in the General Specification for Electrical Installation 2012 Edition and all current corrigenda/amendments thereto published before the date of first tender invitation for the Contract issued by the ArchSD (the General Specification).
All words and expressions shall have the meaning as assigned to them under the General Specification unless otherwise specified herein.“Major Alteration” of an existing electrical installation means alteration involving work on any distribution board or electrical equipment having an electrical current rating exceeding 100A single phase or 60A three phases in an existing electrical installation.
This T&C Procedure is also intended to lay down the minimum testing and commissioning requirements to be carried out by the EE Contractor on a new Low Voltage Cubicle Switchboard Installation upon completion or on an existing Low Voltage Cubicle Switchboard Installation after a major alteration involving modification of the main busbar such as upgrading, reposition and extension.This T&C Procedure also covers the verification of the electrical installation and lighting installation to demonstrate the compliance with the Building Energy Code (hereinafter named as BEC) issued under the Building Energy Efficiency Ordinance (Cap.610). The EE Contractor is required to check, measure and submit the required information to PBSE for his/her consolidation to verify the design in compliance with
the BEC.
Objectives of the Testing and Commissioning (T&C) Works
The objectives of the T&C works are:-
(i) To verify proper functioning of the equipment/system after installation;
(ii) To verify that the performance of the installed equipment/systems meet with the specified design intent or statutory requirements through a series of tests, measurements and adjustments; and
(iii) To capture and record performance data of the whole installation as the baseline for future operation and maintenance.
For the avoidance of doubt, depending on the specific demands of individual installation, the PBSE may require additional or substitute T&C works in regard to any elements in the installation other than those indicated in this T&C Procedure.
