All raw materials and sub-assemblies viz. castings, forging, bars, plates and hardware etc. are procured as per approved technical specification or specified relevant standards.
Only materials as per Technical Specifications approved by Quality Assurance Department are accepted and stored in raw materials stores.
For the incoming materials the inward in-charge records the data in the in-word register. The Quality Assurance Department is informed through in-slip and the incoming material is stored in the receiving inspection area, until clearance by Quality Assurance Department.
100% inspection or alternatively as per sampling plan laid down in ISO 2500 (Part I) is carried out in accordance with the Quality Assurance Plan for each product.
The Quality Assurance Department arranges to send the test bars and other materials to a reputed chemical and physical laboratory for chemical composition test. Material Test Certificates on various part - Body, Bonnet, Wedge, Disc & Components materials are obtained in advance with the Quality Assurance Plan.
The parts, component sub-assemblies found to be OK are tagged with OK sticker and signature of Quality Assurance Engineer. The rejected parts and materials are market with REJECTED tags and returned to the supplier / sub-contractor. Quality Assurance Engineer verifies the size, pressure rating, material code, manufacturers emblem, arrow mark for flow direction, heat number etc. on the casting before acceptance. The accepted castings of Body & Bonnet are hard punched with the serial number and marked with green paint.
The accepted materials are stored in the proper racks / bins as per identification mark. The materials are issued against a material requisition slip for each specific requirement. All materials are issued along with a Job Card for manufacturing. Job card shall contain all the operations and methods in a sequence. Only approved and dimensionally accepted materials are taken up for further manufacturing process.