Quality Control Activities

QA/QC Activities and Responsibilities

The following are detailed activities necessary to ensure the quality and compliance of the installation with contractual requirements.

Part of these activities may be performed by the owner or others on behalf of the owner, whereby contractor provides only supporting personnel and facilities. Most of it is, however, done as routine matter by the contractor’s inspectors and  supervisors. Records and reports on the result of the test and inspection are made and kept as history records for future reference (Sample of reporting. Test and inspection forms are shown and attached see corresponding attachments)

Materials Receiving and Storage

Material shall be inspected by the material controller upon arrival at the site. Any Deviations from applicable standards shall be duly noted and informed to the QA/QC in – charge. Any material not conforming to applicable standards shall be rejected and brought outside the jobsite premises. Materials which conform to standards shall be properly stored in an orderly manner at the storage warehouse or it can be stored in an open storage yard properly stacked in pallets and covered with tarpaulin canvass or vinyl sheet.

Surface Cleaning

The surfaces to be insulated i.e. equipment and piping, shall be thoroughly cleaned and must be free of rust, slag, etc. Touch up paint shall be done on damaged surfaces before insulation works could commence. Release notice for hydro test completion shall be issued to the insulation contractor before the start of any insulation works.

Installation of Insulation

Insulation materials shall be applied on Equipment and Piping after Proper surface cleanliness has been checked by the QC inspector and witnessed by client’s representative. The supervisor or foreman in charge should ensure that the correct material is applied as per the appropriate standard. Fastening materials shall also be as per standard and in correct dimension vis-a-vis the distance or pitch.

Installation of Weatherproofing

Weatherproofing or jacketing shall be applied on the insulation materials for protection against the adverse effect of the environment. Correct type of material shall be used. Proper overlap shall be observed and correct positioning of the metal cladding joints, so that there shall be no water or moisture penetration. Any possible source of moisture entrance such as supports, etc., shall be applied with metal flashing and caulked with sealant properly. Final appearance shall be taken into consideration whereby workmanship is of the best quality.

Field Quality Control

Surface Cleaning

• Receive release notice
• Clean surface properly with rugs, wire brush, etc.
• Check surface for cleanliness  

Installation of Insulation

• Inspect materials as per standard
• Check insulation thickness
• Verify fastening accessories as per dimension 

Installation of Weatherproofing

• Inspect materials as per standard
• Verify fastening accessories as per dimension
• Check proper caulking
• Check final appearance