Motorized Damper & Motorized Fire Smoke Dampers (MD & MFSD) T & C Method Statement

1- Introduction

1.1 Scope

This method statement deals with the testing & commissioning of Motorized Dampers & Fire/Smoke Dampers (MD/MSFD).

1.2 Objective

The purpose of this method statement is to define the step-by-step procedure to implement the correct practices for the Testing & Commissioning of Motorised Dampers & Fire/Smoke Dampers (MD/MSFD).

This is through the guidelines contain here to ensure that the job execution complies with the project specifications and serves the intended function to a satisfactory level.

2- Prerequisites to Procedure

Before start testing and pre-commissioning the equipment, the listed measures need to be respected:

2.1 Site Accessibility and Safety

· Free access is provided to officially appointed personnel only.

· Safe environment is provided in electrical rooms.

2.2 Documentation for inspection

· Method statement is approved, including test forms.

· Method statement is approved, including test forms.

· SCC and ATP certificates are signed.

· Materials approved.

2.3 Quality Control test reports and submittals

· IR for installation is cleared from significant items.

· IR for testing all the cables connected to the damper is approved.

2.4 Power on the requirement

All Electrical Pre-commissioning to be completed witnessed and approved.

3- Design Parameters

All design parameters references are specified as below:

3.1 Specification Reference

· Section 15910 Ductwork Accessories.

4- Reference Documents/Drawings 

4.1 Relevant Codes

· NFPA 70

· NFPA 90A

· SMACNA (HVAC Commissioning Manual)

· UL 555S Standard for Smoke Dampers

4.2 Drawing Reference 

Related approved drawings references to be attached to WIR & test package. This document needs to be read in conjunction with the following document and other relevant contract documents and not limited to the below:

4.2.1 Approved Schematic Drawing Reference:

Related approved schematic drawings references to be attached to WIR & test package.

4.2.2 Relevant Approved Material Submittal:

Related available approved materials submittals to be attached to WIR & test package.

5- Pre-Start Checks/Pre-commissioning

5.1 Motorized Dampers (MD) Pre-commissioning Checks:

· Check that the damper blade/blades are open.

· Check that the MD actuator is installed as per manufacturer recommendation.

· Connection to BMS control module is done.

· Check the Installation is free from damages.

· Check the MD are in the correct location as per the approved shop drawing.

· Check that all cables are fixed without tangling.

· Check the rotation of MD manually and ensure freedom of rotation.

· All dampers are fitted with suitable access doors or movable duct sections to drop test the dampers.

5.2 Motorized Smoke Fire Dampers (MSFD) Pre-Commissioning Checks:

· Check that the damper blade/blades are open.

· Check that the MSFD actuator is installed as per manufacturer recommendation.

· Connection to Fire alarm control module is done.

· Check the Installation is free from damages.

· Check the MSFD’s are in the correct location as per the approved shop drawing.

· Check that all cables are fixed without tangling.

· Check the rotation of MSFD manually and ensure freedom of rotation

· All dampers are fitted with suitable access doors or movable duct sections to drop test the dampers.

6- Commissioning/Test Procedures

6.1 Motorized Dampers (MD) Commissioning Checks:

Non-Fire Rated Dampers Testing and Commissioning will be in conjunction with automation system control field devices and sequence of operation.

· During Testing of each Motorized Damper, issue an open/close command from DDC HMI and make sure the damper modulates to 100% open/close position.

· Based on the Sequence of Operation, the damper should react in compliance with programmed output.

6.2 Motorized Smoke Fire Dampers (MSFD) Commissioning Checks:

· MSFD Controlled by FAS, the Test of MSFD will be done during FAS Pre-commissioning.

· MSFD is controlled by the smoke control system, the Test of MSFD will be done during SCS Pre-commissioning.

· Simulate smoke alarm in the related Fire/Smoke Zone and Verify the MSFD Open/Close accordingly.

· Verify damper actuator is functioning correctly.

· Verify control module is functioning correctly.

· Verify MSFD functionality as per approved Cause & Effect.

· The above tests will be repeated for all MSFD’S.

7- Interface Procedure

· For Motorized Non-Fire rated dampers, BMS controls the MD position (Open / Close).

· For Fire-rated dampers, Verify that all connections needed for the interface with Fire Alarm and Smoke Control systems are available.

· All connections made between the MSFD and FAS will be tested during FAS System Pre-Commissioning.

· All connections between the MSFD and Smoke Control system will be tested during System Pre-commissioning.

8- Documentation

The documents are attached in this file as mentioned below,

· Annexure -1: Motorized Dampers & Fire/Smoke Dampers (MD/MSFD) Pre-Commissioning Check Sheet.

· Annexure -2: Motorized Dampers & Fire/Smoke Dampers (MD/MSFD) Commissioning Check Sheet.

9- Demonstration Procedures

· After completing the procedures mentioned in section 6.0. The Inspection request with all relevant documents is to be sent to Main Contractor for review and inspection.

· After initial verification by the Commissioning Manager, the client’s representatives will be invited to witness the works.

· After attaining approval, test/report sheets will be signed off from all mentioned in the signature block.

· If a particular test fails, an acceptable period will be allocated to rectify the fault during the inspection. 

· Test/report sheets to be distributed as per Project Specification.

10- Instrumentation

10.1 Personal Protective Equipment:

· Helmet.

· Gloves.

· Goggles.

· Safety Shoes.

· Hi-Vis. Vest.

10.2 Testing Equipment:

The test equipment and tools needed to complete Testing and commissioning for Motorized Dampers & Fire/Smoke Dampers (MD/MSFD).

11- Staffing

11.1 Testing & Commissioning Engineer

Facilitates all Testing and commissioning of MEP installations of the project, Testing and commissioning, start-ups, and documentation.

11.2 Senior Electrical/Mechanical Engineer:

Controls all the electrical/mechanical installation management processes.

11.3 Electrical/Mechanical Engineer

Responsible for the installation of the electrical/mechanical systems to be tested.

11.4 Safety Engineer:

Responsible for ensuring the safety of the workers as well as the workplace during Testing and commissioning.

11.5 Commissioning Manager 

Verify approval of the entire Testing and commissioning of electrical/mechanical installations and documents before requesting inspections to PMCM/ Client representative.

11.6 PMCMs / Client Representative:

Verify the entire Testing and commissioning of electrical/mechanical installations to witness and approve the test on-site.

11.7 QC Engineer:

Coordinates with the site Engineers and Client Representatives with regard to Testing and commissioning and the Hand-over process

Responsible for witnessing the test and will assure all installation and Testing are approved based on specifications and standards 

Should attend during Inspection, Testing & Commissioning, and Hand-over.

11.8 Site Foreman/ Electrician:

To assist with the Testing and commissioning of electrical/mechanical works.

11.9 Supplier’s Representative:

To assess the Testing and commissioning of their owned/supplied electromechanical equipment.

12- Safety Aspects & Permit to Work Requirements

12.1  Health and Safety

12.2 Introduction

· All sub-contractors will comply completely with the consultant’s approved HSE plan / Ref.

· Contractor must adhere to the consultant’s health Safety& environment Policy.

12.3 Safety Aspects & Permit to Work Requirements

  • All employees involved in the activity shall undergo site HSE induction course before the worksite.
  • Site activities shall be carried out safely according to the approved “Project Health, Safety and Environment Plan.”
  • The commissioning team must follow the consultant’s permit to work system (Internal) and Client LOTO procedures.
  • Commissioning team must read and understand and follow the consultant’s / Client’s LOTO procedures.
  • A designated permit issuer/receiver or coordinator shall be appointed to control the commissioning area and commissioning works.

12.4  Training

All commissioning & testing personnel will attend a Safety Commissioning Meeting and pre-commissioning safety training before work commences.

12.5 Hazards Related to Testing & Commissioning

  • The following HSE training shall be delivered to the person but not limited to:
  • Working at height
  • Hazards from electricity
  • Use of Power/hand Tools
  • Night working

12.6  Risk Assessment and Control

  • HSE Hazards involved in the activity have been assessed through Hazards & Effects Management Process (HEMP) for every activity and that the outcome is recorded.
  • The contents in HEMP Register shall be disseminated within the teams by the shift supervisor/foreman through toolbox talks.
  • Any new hazards identified other than in the HEMP regarding site conditions shall be assessed. The Site Engineer/Supervisor shall take control measures prior to commencement of any activity.
  • The following control measures generally apply to all hazards that shall be adopted as a proactive measure, in addition, to the specific controls identified in the HEMP register:
  • Correct use & Maintenance of tools and equipment.
  • Deployment of a competent personnel for the task.
  • Conduct daily toolbox talks prior to work commencement.
  • Good Housekeeping.
  • Adequate and effective supervision.
  • Provisioning appropriate PPEs based on the nature of the works.
  • Awareness about emergency response.

12.7 First Aid / Medical Facility / Emergency Response

· Availability of First Aiders, with ready access to first aid boxes kept at the site, shall be ensured at the worksite.

13- Attachments

  • Risk Assessment
  • Test Sheets
  • Annexure-1: Motorized Dampers & Fire/ Smoke (MD/ MSFD) Pre-Commissioning Check Sheet.
  • Annexure-2: Motorized Dampers & Fire/ Smoke (MD/ MSFD) Commissioning Check Sheet.

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