METHOD STATEMENT FOR TESTING & COMMISSIONING OF VENTILATION AND EXHAUST FANS

METHOD STATEMENT FOR TESTING & COMMISSIONING OF VENTILATION AND EXHAUST FANS

CONTENTS

1. 1.0 PURPOSE
2. 2.0 SCOPE
3. 3.0 REFERENCES
4. 4.0 DEFINITIONS
5. 5.0 RESPONSIBILITIES
6. 6.0 EQUIPMENTS
7. 7.0 PROCEDURE
8. 8.0 ATTACHMENTS

1.0 PURPOSE

• This method statement is applicable for the Testing & Commissioning of Ventilation and General Exhaust Fans Units for the project as mentioned in the Specifications & Approved Shop Drawings.

2.0 SCOPE

• This method Statement shall cover the Testing & Commissioning of Ventilation and General Exhaust Fans Units in line with project requirements as indicated in the Approved Shop Drawings, specifications & manufacturer’s instructions.

3.0 REFERENCE

      3.1  Latest Approved shop drawings intended for HVAC Fans

            3.2  Project Quality Plan

• Project HSE Plan
  • Material Approval

4.0 DEFINITIONS

• Main Contractor           :
• MEP Contractor            :
• PQP                             : Project Quality Plan
• PSP                              : Project Safety Plan
• QCP                             : Quality Control Procedure
• HSE                             : Health, Safety and Environment
• MS                               : Method Statement
• ITP                               : Inspection Test Plan
• QA/QC                         : Quality Assurance / Quality Control Engineer.
• WIR                             : Inspection and Test Request
• MIR                             : Material Inspection Request
• ASHRAE                        : Air Society of Heating, refrigerating and Air-conditioning Engineers
• SMACNA                       : Sheet Metal and Air-conditioning Contractor’s National Association
• ARI                                 : Air Conditioning & Refrigeration Institute
• ASME                             : American Society of Mechanical Engineers
• NFPA                              : National Fire Protection association
• UL                                   : Underwriters Laboratories
• BMS                                : Building Management System
• NEMA                             : National Electrical Manufacturers Association
• AMCA                             : Air Movement & Control Association
• TEFC                               : Totally Enclosure, fan Cooled
• BS                                    : British Standards

                                                                        5.0 RESPONSIBILITIES:

            5.1 Project Manager

5.2 Construction Manager

5.3 Site Engineer

5.4 QA/QC Engineer (MEP):

5.6 Safety Officer

            5.7 Store Keeper (SK)

6.0  EQUIPMENTS

Following tools shall be arranged before starting the job.

7.0   PROCEDURE

Ø  Work Sequence/Procedure

• General Requirements

All general site safety requirements shall apply during testing and commissioning. The Contractor shall place suitable warning signs to ensure that all personnel are aware that additional hazards may exist. All personnel involved in the testing and commissioning shall be made aware of all safey requirements in a system commissioning Kick Off meeting and understand the commissioning scope.

The following functional test will be carried out for the commissioning for the Typical of Ventilation and General Exhaust Fans

Ventilation and General Exhaust Fans – Start-up:

Testing & Balancing:

• Testing, Adjusting & Balancing and approved procedure for Air & Water Balancing.

After the successful completion of the start-up and commissioning activities, ensure that all the commissioning check sheets/test sheets are signed by all parties and ensure the following:

Once the system is reinstated as per project required, prior to leaving the premises ensure the following;

• system is already commissioned.
  • Commissioning of Exhaust Fans Control System:
• Chemical rooms:
• Emergency Spill Exhaust Fans to be energize by control panel, shall be open when switch is on mode position. In case of chemical spill, fan can be operated through emergency push button installed in the chemical room.
• Emegency Spill Ventilator fans to be energize by control panel, shall be open when switch is on mode position, in case of chemical spill, ventilator fan can be operated through emergency push button installed in the chemical room.
• Kitchen Fans:
• System Off: Extract Fan and Make-up air fan shall be off.
• System Start-Up: The kitchen extract fan & make up air fan to be energize by control panel, shall open when switch is on mode position, switch installed in kitche area.
• General Fans:
• System Off: Extract and Supply fans shall be off.
• Start Up: Extract and Supply Fans to be energize by control panel, shall open when switch is on mode position at normal operation.
• Staircase & Lift Pressurization Fans:
• Fire alarm system will have primary control on the start/stop operation of the Staircase & Lift well pressurization Fan. So incase of fire condition, FACP (by Fire Alarm vendor) will give command to local control panel / MCC to start the fan.
• BMS shall only monitor the following:
• Fan trip status
• Fan Run Status

Alarms

• The following alarms would be generated on BMS.
• Staircase pressurization Trip: This is generated when the Fan Trip Signal is on as sensed by panel volt free contact.
• Lift well pressurization Trip: This is generated when the Fan Trip Signal is on as sensed by panel volt free contact.
• Generator Room:
• System off: when Generator is off exhaust fans is off.
• System Start-Up:  Exhaust fan shall be interlocked with generator control panel, the fan switching shall be controled through a generator control panel.
• Toilet Exhaust Fans:
• To be energized from control panel installed at roof, motorize damper shall be open when toilet exhaust fan is on mode operation.
• Incase of failure, toilet exhaust fan or no flow signal will be sent to control panel to energize the toilet exhaust fan and to operate motorize damper and switch off the motorize damper.