Sarl OGM has a Quality Assurance laboratory at its manufacturing facility, which has a fully equipped, well-staffed, dedicated & qualified employee with strict procedures to maintain the highest level of quality.
We have a rigorous set of minimum standards and an effective test program to ensure compliance has been achieved at every stage in the program.
These procedure and requirements are frequently reviewed and adjusted to assure compliance with current market demands and/or predetermined project specifications.
Sarl OGM has implemented a strict & thorough Quality Assurance Program for its geomembrane products.
The Sarl OGM Quality Assurance Program is as follow
In line manufacturing quality assurance
The quality assurance program for finished products begins during the manufacturing process. Our manufacturing line is equipped with state of the art monitoring devices that provide feedback on the physical quality of the produced geomembrane.
Our Production line is equipped with both a thickness gauge & spark testing devices.
A – Thickness measurement : as the geomembrane is under production, thickness readings are taken continuously over the length and width of the roll. These data are used to establish the minimum, maximum average values for each roll and is verified by thickness testing upon sampling of the finished products.
B – Spark testing : an electrical spark detector is in place on our Production line. This apparatus provides immediate notification of any discontinuities in the finished products. If a hole is detected, an alarm is triggered and the position is identified. Rolls containing holes are rejected from standard Product inventorie.
Smooth geomembrane materials
Smooth geomembrane products include High Density Polyethylene materials with 2-3% carbon black. The geomembrane consists of quality virgin resins designed and manufactured specifically for the purpose of this work, as satisfactorily demonstrated by extensive prior use.
The geomembrane liner will be manufactured from first quality resins containing no plasticizers, fillers, recycled polymers, or extenders. Carbon black is normally added to provide ultraviolet resistance, and other additives to provide thermal stability.
If a color other than black is specified then approved colour pigments and other ultraviolet inhibitors will be added in place of carbon black.
A – Sampling : Geomembrane rolls are sampled for QA testing according to the frequencies specified on the data sheet. An approximate 30cm by roll width sample is cut for quality assurance testing. Test specimens are taken from five positions across the width of the roll. A retained or archive sample approximately A4(30cm x 30cm) is taken one of the five positions on an alternating basis from the laboratory / retained sample is labelled and kept for 3 years for future reference.
B – Evaluation : if the testing of geomembrane product does not meet Sarl OGMminimum requirements and /or customer specifications, then it will be generally rejected and only products that meets Sarl OGM minimum and/or customer specification will be approved.
C – Reporting : Every roll of material has a quality assurance roll certificate. This report identifies the standards on which Sarl OGM approval is based along with the actual results demonstrated by the material.
Sarl OGM maintains high capacity, state of the art laboratory equipment suitable for performing specific Test procedures.
Sarl OGM has developed a strict and thorough Quality Assurance Program, which meets or exceeds GRI GM13 specifications as a MINIMUM, it covers test properties, testing frequency for High Density Polyethylene (HDPE).
The Comprehensive testing program covers raw materials and the finish goods
Sarl OGM has established strict specification testing procedures for all raw materials. Test results must fall within the acceptable limits of Sarl OGM & customer specifications.
Our geomembrane produced using prime grade and virgin raw materials like natural resin, masterbatch & antioxidant, blended in appropriate ratios at the manufacturing stage.
Black master batch protects the resin against UV degradation & the additive package protects against thermal & oxidative degradation both during the manufacturing process, whilst being stored and whilst in operation outdoors.
Sarl OGM verifies the properties of each lot of raw material prior to its utilization. When natural resin batches received, samples are taken and subjected to the tests and they wil not be accepted unless all standard test requirements are complied with.