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MAN-4 COMMISSIONING – COMMISSIONING AGENT

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					     City of Sydney                                               Technical Manual

     Medium Density Residential DCP MAN-4 Commissioning – Commissioning Agent



MAN-4 COMMISSIONING – COMMISSIONING AGENT
Aim of Credit
To encourage and recognise the appointment of an independent
commissioning agent from design through to handover.

Credit Criteria
One point is awarded where it can be demonstrated that an independent
commissioning agent has been appointed to provide commissioning advice
to the client and the design team and to monitor and verify the
commissioning of HVAC and building control systems.

Compliance Requirements
Stage One DA
If this credit is nominated as part of the Stage One DA submission, the
applicant should select the number of points claimed in the Stage One DA
Checklist.
No additional evidence is required.

Stage Two DA
If this credit is nominated as part of the Stage Two DA submission, the
applicant should select the number of points claimed in the Stage One DA
Checklist.
No additional evidence is required.

Construction Certificate
The following documentation is required to demonstrate compliance:
•      A copy of the letter of appointment of the independent
       commissioning agent including the responsibilities of that agent;
OR
•      A written commitment from the building owner to appoint such an
       agent - which lists the responsibilities of the agent - will be sufficient if
       the tender has not yet been let, or where an agent is not yet selected.
The point will not be awarded unless the independent agent’s role is clear
and it is clear that the commissioning agent is a representative of the building
owner.
The commissioning agent may be a suitably qualified or experienced person
from within the contractor or sub-contractor organisation, as long as they are
not involved in the general installation works.

Occupancy Certificate
The following documentation is required to demonstrate compliance:



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     Medium Density Residential DCP MAN-4 Commissioning – Commissioning Agent


•      A copy of the CV of the independent commissioning agent detailing
       their qualifications provided to the client;
•      An extract from the independent agent's commissioning report that
       summarises the major findings and recommendations of the
       commissioning process.
•      Evidence of the independent agent's involvement during the
       commissioning process EITHER through the provision of copies of
       meeting minutes and attendees demonstrating the agent’s
       involvement OR through a list of correspondence and reporting
       provided by the independent commissioning agent to the design
       team.

Additional Guidance
The commissioning agent must report directly to the building owner and is the
person, company or agency that will plan and carry out the overall
commissioning process. The primary goal of the commissioning agent is to
independently identify system deficiencies as early in the project as possible
and track their status until they are corrected.
The commissioning agent can be from within the contractor or sub-contractor
organisation, as long as they are not involved in the general installation works.
The commissioning agent must be an objective advocate of the building
owner. His/her responsibilities must include a designation to:
•      Review the basis of design and the design intent as well as preliminary
       working drawings;
•      Create a commissioning plan and direct the commissioning process
       that covers the following if present: air distribution systems, boilers,
       automatic controls, lighting, refrigeration systems and water
       distribution systems;
•      Introduce standards and strategies early in the design process;
•      Set target requirements in the contract documents to ensure
       implementation of selected measures;
•      Coordinate with the client, design team and contractor throughout
       the commissioning, testing, and adjustment phases;
•      Observe all testing, review and approve contractor test results; and
•      Prepare a final commissioning report including recommendations to
       the client regarding the performance of commissioned building
       systems.

Background
Commissioning is a vital stage of most construction projects in ensuring that
building services and fabric operate as intended by the design team - i.e. in
an efficient and effective way. Very few buildings work as initially intended by
their design teams. As responsibility passes from client to architect to
contractor to operator to the maintenance team, there is significant



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opportunity for things to go wrong, for misunderstandings, and for strategy to
give way to practical expediency.
The successful transfer of building information at the commissioning stage will
allow:
•      Building operators to understand in detail what they need to do to
       operate the facility and further tune it to continuously improve and
       respond to changes in circumstance;
•      Maintainers to understand how to service the particular systems not
       only for reliable operations but also for energy efficiency;
•      Occupants to understand the limitations that they must work within to
       maintain the design performance; and
•      Future modifiers to understand the design basis for the building and
       the systems so that these are not compromised in any changes.
Commissioning has traditionally been undertaken in a limited period of time
at the end of the project, when there is often no or little budget left. It is done
with the ambient climatic conditions at the time and usually with the building
unoccupied.
The aim of this credit is to promote better building tuning by ensuring that the
time and cost implications are accounted for during the design phase. The
benefits of a 12-month commissioning period include:
•      Verifying that systems are performing at their optimum efficiency
       during all climatic variations for the occupied building;
•      Providing an opportunity for the systems to be tuned to optimise time
       schedules to best match occupant needs and system performance;
       and
Aligning the systems operation to the attributes of the built space it serves

References & Further Information
ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning
Engineers)
ASHRAE Guideline 1-1996 -- The HVAC Commissioning Process
ASHRAE Handbook: New Building Commissioning
http://www.ashrae.org

CIBSE (Chartered Institution of Building Services Engineers, U.K.)
CIBSE Commissioning Code A: Air Distribution Systems
CIBSE Commissioning Code B: Boilers
CIBSE Commissioning Code C: Automatic Controls
CIBSE Commissioning Code L: Lighting
CIBSE Commissioning Code M: Commissioning Management
CIBSE Commissioning Code R: Refrigeration Systems
CIBSE Commissioning Code W: Water Distribution Systems

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http://www.cibse.org

AIRAH (Australian Institute of Refrigeration Air Conditioning and Heating)
http://www.airah.org.au




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