TITLE: STATEMENT OF METHODOLOGY FOR INSTALLATION OF PERFORATED PIPE PURPOSE: The puprpose of this methodology is to illustrate the guidelines and procedures on the installation of Perforated Pipeping and underdrain works. SCOPE: The work procedure shall apply to Plumbing System for the Construction of all permanent and major temporary works. PROCEDURES: A. PRE-INSTALLATION 1. Secure the approved plans and drawings to be used for the activity 2. Verify if the area is ready for the activity 3. prepare all the materials needed based on the approved material submittals. Materials should be checked and inspected upon delivery prior to installation. 4. Prepare all the required manpower, tools and equipments, and PPE for the installation. 5. Secure all the required work permits and safety permits prior to exevution of activities. B. INSTALLATION PROCEDURE: 1. Drill holes in the PVC Pipe. The hole diameter shall be 13mm with spacing of 150mm staggered or as recommended by the designers and Co
TITLE: METHOD STATEMENT FOR INSPECTION AND LEAKAGE TESTING (PRESSURE TEST) OF AIR DUCT 1. Purpose This method statement describes the detailed inspection and leakage testing plan (pressure test) for the air duct. 2. Scope This method statement covers all scope of works related to air duct leakage testing (presure test). 3. Testing Procedures Leakage Testing of G.I. Air Duct: * The conventional leak testing of air duct is based on a positive pressure mode analysis. It involves using temporay plugs / seals (plates, sheets, balloons, bags, etc.) in openings of the duct to be tested. At the duct opening on one end of the specimen to be tested, connect the blower and other test instruments/equipment as shown in illustrations 1 and 2 below. * Select a test pressure not to exceed the pressure class rating of the duct. * Calculate the allowable leakage using the leakage factors applicable to the duct area. * Select and calculate a duct section to be tested for which the estimated leakage will