Standards

This Code of Practice gives recommendations for storage of tyres, inner tubes and flaps.

This publication was last reviewed and confirmed in 2025. Therefore this version remains current.

This Guyana Standard is a glossary which defines terms related to passenger car and commercial vehicle tyres. The standard is divided into six sections dealing respectively with general definitions, definitions related to structure, main components, tyre dimensions, service, injury and repair.

This standard specifies the requirements for new and used pneumatic passenger car tyres, along with their storage conditions. It does not apply to tyres for highway commercial vehicles.

This standard describes exhaust emission requirements for all new domestic and commercial vehicles which have been registered in Guyana for the first time after December 31, 1997. This standard also describes exhaust emission requirements, measurement methods and measurement equipment for all vehicles, which are imported into Guyana after December 31, 1997. All imported vehicles would be required to conform to exhaust emission limits specified in the standard. Accordingly, the exhaust emission limits must be fully documented and certified by the suppliers/manufacturers, from the country of origin.

 This standard establishes the basic principles for carrying out vibration measurement and processing data, with regard to evaluating vibration effects on buildings. The evaluations of the effects of building vibration are primarily directed at structural response, and include appropriate analytical methods where the frequency, duration and amplitude can be defined. It only deals with the measurement of structural vibration and excludes the measurement of   airborne sound pressure and other pressure fluctuations. 

This standard provides general guidance on methods of carrying out penetrant inspection on materials and components both during manufacture and in service. It does not deal with acceptance or rejection. Penetrant inspection is used to locate discontinuities, such as laps, folds, cracks, porosity and fissures, which are open to the surface of a material or component. Penetrant techniques can be used on materials irrespective of their physical properties, provided that the surface is normally non-absorbent and compatible with the penetrant process. 

This standard provides general guidance on

. This standard specifies the minimum requirements for industrial illuminators used for viewing radiographs.

 This standard lays down general requirements on penetrant flaw detectors and their functional units which are designed to reveal invisible, or poorly visible to the eye, surface discontinuities in metals and non-metals of any geometry and at any stage of manufacture.

This part of GYS 120 specifies an ultrasonic testing method for determining bond defects between the bearing metal and the backing.  The test can be performed on metallic multilayer plain bearings consisting of backings lined with bearing metal based on lead and tin, with layer thickness greater than or equal to 0, 5 mm.  The test is not possible within half the diameter of the crystal from the edges of the bearing, oil holes, grooves, etc. because of undefined reflections. In bearings with dovetail keying grooves at the bond, the test may not be possible along the edges of the dovetails.