Dehumidifier Installation Method Statement

This method of statement describes the methodology and procedure for the dehumidifier installation for an HVAC installation project, and to ensure that all concerned persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable safety and quality procedures, project documents and specifications.

The document covers the following scope of works:

This method statement is intended to outline the activities and the methods used for the installation of dehumidification unit or dehumidifier.

All activities will be carried out in accordance with the contract details and in full compliance to the contract specifications and other QHSE documents.

Works within the rights of way of the standards and specifications will be done in compliance with requirements issued by relevant authorities.

All related codes and standards referenced in the contract specifications shall be followed in this method statement and all related works.

Arrange below equipment’s / tools before starting the humidifier installation works.

• Power Tools
• Hand tools
• Fork lift
• Step ladder
• Manual handling

Necessary measures will be taken for the safety of the equipment and any other works affected by the works subject of this document.

Relevant entities which might require protection include any such works in the vicinity of the area of work or on the service access or discharge path.

The construction team will ensure that any such requirements are documented.

Health, Safety & the Environment

Construction Hazards (tick as appropriate)

The hazards identified above will be controlled under the overall project health and safety plan which is a separate document communicated to all parties on the project.

Personal Protective Equipment (tick as appropriate)

The works subject of this document requires that the following PPE be used:

Safety Training and Emergency procedures

Before commencing any works related to the dehumidifier installation, all employees will attend a site safety induction training to ensure all safety measures are understood and implemented and to cover specific procedures in case of emergency.

If necessary, practical training exercises will be conducted on escape routes, signage, evacuation and rescue.

First Aid

Prior to the commencement of work, arrangements will be made for medical facilities and medical personnel to be available from prompt attention to the injured person.

The contractor’s vehicle assigned to the job site will be used for transporting the injured person to the first aid station and to the nearest hospital when required.

	Name of On-Site First Aider/s:
	First Aid Box Location:
	Location of Nearest Hospital:
First Aid and Medical Supplies available at site:
Potable Water		Ice Cubes
10x6cm Sterile Gauze Pad		4x6cm Gauze Roller Bandage
10x10cm Sterile Gauze Pad		8x10cm Gauze Roller Bandage
Large Sterile Gauze Pad		10x12cm Gauze Roller Bandage
Burn Dressings		5cm Elastic Bandage
7.5cm Elastic Bandage		10cm Elastic Bandage
Triangular Bandage		Barrier Device for CPR
Adhesive Skin Tape		Adhesive Leucoplast Tape
Emergency Blanket		Safety Pins
First Aid Scissors		Tweezers
Disposable Gloves		Instant Cold Pack
Non-prescription Medicines (Aspirin, Ibuprofen, Acetaminophen)		First Aid and Burn Spray, Deep Heat Spray

Detailed Construction Sequence (Methodology)

Workplace must be free of obstructions, clean and ventilated.

Protective clothing must comply with current safety regulations in force in the region.

No specific hazards are associated with the installation other than general ones identified in the installation manual.

All electrical work must be carried out by qualified personnel in line with regulations in force.

Unit must be lifted by fork lift or suitably sized frame (unit weight approximately 830 kg).

Dehumidification unit must be kept horizontal during lifting and sudden movements must be avoided.

The required clearances around the unit must be observed during the placement / installation.

All panels and structural steel members shall be of G-90 galvanized steel, treated and painted prior to assembly to provide a chlorine and pool chemical resistant finish.

The paint shall be plastic epoxy based powder coating, applied 0.003 inch (2-3 mils) thick, and baked and bonded at 420 degrees F until it forms a hard vinyl textured surface.

Dehumidifier Installation Procedure

Provide three feet clearance around sides and four feet around compressor compartment of unit for airflow and service.

Also provide means for access to all sides of the unit.

After unpacking, dehumidification unit should be inspected and if any damage is found this should be reported to consultant and supplier for further instructions.

Install the unit on a flat/level floor suitable for the weight of the unit.

It is recommended that rubber mats be used between the floor and the feet of the unit in order to minimize vibrations.

Fit the condense drain line in line with the instruction from manufacturer and technical specification.

Good practice should be used in the design of the drain line and a drain trap should be incorporated.

Fit duct connections to the return and supply where appropriate.

Supply duct sizes should be at least equal to the sizes of the outlets on the unit.

Ducting installation is beyond the scope of the dehumidifier supplier, but these should be verified and checked by contractor.

Make electrical connections respecting the wiring diagrams shipped with the unit.

Ensure that the power supply is within the acceptable range set out in the instruction manual.

Follow start up procedure as outlined on the instruction manual.

Check correct unit operation.

See relevant sections of the instruction manual for testing and commissioning of the dehumidifier units.

The work area shall be maintained neat and tidy as reasonable practical at all times.

Executed works in areas where other works are still being carried out shall be protected as per the contract requirements.

Responsibilities

Position	Overall Resp.	Supervise	Perform	Short Description
Project Manager
Construction Manager
Project Engineer
Site Manager
Site Engineer
Land Surveyor
Safety Engineer
QA/QC Engineer
MEP Coordinator
General Foreman
Foreman
Charge hand
Labourers
Helper

Records 

In accordance with the Quality Management System, the following records will be maintained as documentary evidence of the establishment of this method statement:

Records to be retained	Responsibility	Minimum Retention Period	Disposition
Work Notification ( If required)	Site Project Manager	As per Contract Requirements
Request for Inspection ( WIR )	QA/QC Engineer	As per Contract Requirements

Inspection and Testing

In Process works shall be monitored for quality of workmanship and fabrication against approved shop drawings and standards by the relevant supervisor.

All works shall be inspected for conformance to the project specifications and manufacturer installation requirements.

The inspection formats shall be used in accordance with the requirements of the main contractor or sub contractor project quality plan.

Raise the inspection for installation of dehumidification unit in order to obtain consultant approval.

Attachments

• Inspection and Testing Plan ITP
• Installation Inspection Checklist
• Risk Assessment