Simpro offer Environmental Stress Screening (ESS) of equipment that must withstand specific stresses. ESS can be done for ongoing production, or in connection with the testing and qualification of new products. ESS tests include mechanical and thermal stress on the product.
With 8 years of experience and over 4 000 ESS tested units, Simpro has gained considerable expertise in ESS testing. Contact us today to discuss how we can help you with your ESS needs.
Simpro can offer ESS tests for
ESS tests during the development stages
- Q1 and Q2 Qualification
ESS tests as part of the preparation prior to a formal qualification of the product
ESS testing as part of the ongoing production
In addition to the actual execution of the tests, Simpro offers a complete ESS program including
- Test Development
- Planning and Execution of tests
Simpro perform ESS according to
- ISO 13628-6 Petroleum and natural gas industries — Design and operation of subsea production systems — Part 6: Subsea production control systems.
- IEC 60068-2-6 Sine vibration
- IEC 60068-2-64 Random vibration
Test according to other standards are done upon request.
Simpro has a modern ESS lab with duplicated capacity both with regard to vibration testing and temperature cycling.
Our ESS lab can be rented out on day or weekly basis.
Simpro has 2 shakers with capacity of respectively 350kg and 9kg according to ISO 13628-6.
|ETS M2 series MPA409-M437A / GT900M||Brüel & Kjær LDS V650|
|Max acceleration sine peak||100gn||100gn|
|Velocity sine peak||1.8m/s||1.5m/s|
|Displacement continuous pk-pk||51mm||25.4mm|
|Frequency range||DC to 2 500Hz||DC to 5 000Hz|
|Weight – test object (According ISO 13628-6)||350kg||9kg|
Simpro has 2 climatic chambers with capacity of respectively 224 litre and 1368 liter.
|ACS DY1400 C 10 ESS||ACS Challenge CH250TC|
|Capacity||1 368 liter||224 liter|
|Internal dimensions (WxDxH)||1000x1342x1020 mm||600 x 535 x 700mm|
|Temperature range||-75°C to +180°C||-70°C til +180°C|
|Temperature fluctuation||±0.5°C … ±1°C||±0.25°C … ±0.3°C|
|Temperature rate of change – heating||10°C/min. from -70°C to +180°C||5°C/min fra -70°C til +180°C|
|Temperature rate of change – cooling
||10°C/min. from +180°C to -70°C||3.5°C/min fra +180°C til -70°C|
ACS DY1400 C 10 ESS will be installed during Q2 2015.
ESS – Background
ESS is the process of exposing a product to environmental stresses in order to identify and eliminate latent defects. After ESS, the remaining product population will have a higher reliability than a similar unscreened population due to the resultant elimination of infant mortality defects. The screening process can range from providing a basic check of an electronic system prior to shipment (burn-in) to the application of much more severe environmental profiles, including temperature and vibration cycles at extreme limits.
The benefits of screening depend on the maturity of the manufacturing process, more mature processes expected to introduce fewer defects. It is estimated (Telcordia SR-332, Issue 1) that the failure rate of a system population is up to four times higher at initial deployment than it will eventually be after one year. This means that if no ESS is performed, it will take up to one year for the population to naturally reach the expected steady state failure rate observed during the useful life period.