Search Results

Performance testing provides an important complement to urine testing as a determinant of fitness for duty. Performance testing can be conducted immediately to screen out impaired workers before they undertake safety related job functions. Urine testing involves the expense and delay of laboratory testing, and results relate more to life style than current on-the-job performance capability. This paper reviews performance based testing and discusses the development and application of two performance based screening devices. One device has the capability of rapidly screening for impaired psychomotor performance given previous baseline data. The second device provides the potential for screening psychomotor and divided attention performance without prior experience or baseline data.

SAE J1453 O-ring Face Seal (ORFS) Fittings have emerged as the premier fittings to eliminate fluid leakage. They utilize an elastomeric O-ring in a captive groove to prevent leakage at the fitting to tube/hose interface. A straight-sided groove had been used successfully for years, but it had the problem of not consistently retaining the O-ring in the groove until the fittings are assembled. A new dovetail groove, which positively retains the O-ring, has been designed and incorporated into the SAE J1453 standard. Several alternative designs were considered before agreeing to adopt the dovetail groove. This paper covers the development and testing conducted to adopt the dovetail groove in the SAE standard.