• Design and fabrication quality of the shedder plating support structures, discharge piping and stiffeners.
• Standard of workmanship in the welding in the above areas.
• Local service conditions such as handling, storage and transportation (road conditions and distance travelled).

• Engage a competent person to carry out an internal inspection of the vessel if it has not been inspected in the last twelve months.
• Remove from service any item of plant identified as unsafe, until all defects have been corrected and a competent person has re-inspected the plant.
• Review in-service inspection intervals based on the results of this inspection.
• Retain records of inspection, maintenance and repair for each item of plant.

If your inspections identify any of the issues outlined above then you should contact the designer, manufacturer, importer or local supplier of the plant in relation to appropriate methods for correcting the defects. You can also refer to AS/NZS 3788:2006 – Pressure Equipment In-service Inspection.

Further information can be obtained from WorkSafe’s website or by contacting customer service on 1300 307 877 or email safety@demirs.wa.gov.au