PDO Medical examinations specification SP1230

Petroleum Development Oman LLCRevision: 3.0Effective: 1 Apr 2009Accordingly the colour vision requirement is:1. Ability to recognize and identify above three different fueltypes2. Ability to detect change from yellow to blue green usingShell water detection capsule3. Ability to recognize and distinguish lettering and labellingon Avgas (red) and Jet A1 (black)An error when fuelling an aircraft could have catastrophicconsequences. There are many engineering controls but thisfinal colour dependent identification of fuel is a required safeworking practice.ProcedureQuestionnairePhysicalevaluationInvestigationsFrequencyKey fitness forwork issuesReferenceResourcesPerformanceindicatorsPre placement evaluation of colour vision – once only.Screening test using Ishiara plates. Fit for task if no errors.If errors on Ishiara, complete Farnsworth Munsell 100 Hue test -an applicant shall demonstrate an individual error of 5 or less onthe specific axis corresponding to Duetan or Protan axis andcomplete the test with a total score of not less that 100. (TheFarnsworth Munsell D-15 is an acceptable alternative test).If employee passes either of above tests they shall also completea field trade test confirming that they can complete all three tasksidentified above.NoneIshiara screening for all at pre-placement in task.General physical examination.Further investigation as above only for those with errors onIshiara screening.Audiometry.Colour vision- Once only at pre placement.Colour vision is largely stable and repeat periodic testing is notindicated unless there is clinical indication to suspect a change instatus of employee.Medical check every 5 years including Audiometry.Adequate colour vision is an absolute requirement for this task.Shell Colour vision standards% of those in position who have been positively assured coloursafe for task.Page 36 SP-1230 : Specification for Medical Examination, Treatment & Facilities Printed 25-Sep-08The controlled version of this CMF Document resides online in Livelink®. Printed copies are UNCONTROLLED.