Consulting-Specifying Engineer - September 2008 - (Page 31)

Pre-design phase Define owner’s project requirements Acceptance Determine scope and budget Develop preliminary plan Design phase In addition to verifying performance visually— like at left—data gathered (see above) during commissioning can be used as a benchmark to evaluate the future operation of the equipment. Photo: KlingStubbins Verify owner’s requirements and update basis of design Construction documents Outline procedures and acceptance criteria Update commissioning plan Identify expectations of contractor and manufacturer Resolve issues Design review The commissioning scope will be dictated by the type and size of the facility. Critical facilities like data centers, call centers, and hospitals have more complex electrical distribution, standby, or emergency generation and other backup systems than a standard office facility, and therefore will require a more comprehensive commissioning scope. The following is a list of on-site electrical systems to consider when determining the commissioning scope for a project. • Normal power systems: - Switchgear/switchboards (medium- and low-voltage) - Main-tie and auto throw-over schemes - Transformers - Panelboards - Transient voltage surge suppressors - Motor controllers - Bus duct and tap devices - Fuse/circuit breakers - Relay protection systems. • Emergency/standby power systems: - Generators - Generator paralleling switchgear - Automatic/static transfer switches - Roll-up generator tap boxes • UPS • Lighting control systems • Emergency power off systems • Supervisory control and data acquisition systems • Grounding systems. Design phase In the design phase, the owner’s requirements are translated into construction documents. The commissioning agent’s role in the design phase is to review and comment on the Acceptance Construction phase Submittal review Develop on-site commissioning test procedures Finalize commissioning plan Develop on-site commissioning checklist Coordinate commissioning schedule Resolve issues Factory testing Acceptance Operation phase Equipment visual and mechanical inspection Discrete systems test Resolve issues Resolve issues Individual equipment test Acceptance Update issues log Create issues log Acceptance Integrated systems test Resolve issues Acceptance Update issues log Commissioning a facility requires several steps and several concurrent processes. Source: KlingStubbins (based on ASHRAE Guideline 0-2005 Commissioning Process Flow Chart) Consulting-Specifying Engineer • SEPTEMBER 2008 31

Table of Contents Feed for the Digital Edition of Consulting-Specifying Engineer - September 2008

Consulting-Specifying Engineer - September 2008 Contents Viewpoint Letters News M/E�Roundtable Selecting Appropriate Egress Strategies Commissioning On-Site Electrical Systems Mentoring Control Engineers and Technicians Casting Call for Cx Case Study New Products Equipment Lifecycles Advertiser Index Green Space

Consulting-Specifying Engineer - September 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.