Cosasco
®
RBS/RBSA Retriever Maintenance Work Instruction
P/N: 741031revH
Scheduled Review Date: July 2018
Page:
42 of 46
Date: 26/06/2017
Note: Please ensure you have the latest revision of this document by downloading it from our website or by contacting Cosasco Customer Service.
NOTE: A pressure test can only be considered valid if the test meets the following minimum
criteria:
Prior to Mobilisation:
o
On completion of a service campaign the Retrieval Tool and Service Valve
must be disassembled, inspected, and fully serviced in accordance with the
latest revision of the relevant Cosasco ‘Maintenance Work Instruction’. Upon
servicing completion, providing a successful pressure test is completed the
equipment may be mobilized for further service work within 7 days of the
successful test.
o
If the equipment is stored for a time period greater than 7 days from servicing,
but no longer than 6 months it may be mobilized for further service work
without being re-serviced, provided that a new successful pressure test has
been completed within the 7 days prior to mobilization.
o
If the equipment is to be stored for a period of greater than 6 months from
being serviced then all equipment should be re-serviced and pressure tested
every 6 months in accordance with the latest revision of the relevant Cosasco
‘Maintenance Work Instruction’. A successful pressure test will be required
within the 7 days prior to mobilization for service work.
Equipment mobilized for Field Service:
o
Once the retrieval equipment has been used in the field each online retrieval
operation can be considered a successful pressure test for a further
consecutive online retrieval operation with a validity of 12 hours. This duration
between retrieval operations may be increased to 72 hours provided the tool is
drained of any process fluids and the equipment internals have a suitable
lubricant / protectant such as WD40 or Hydraulic Oil applied within the 12 hours
following the last successful retrieval operation.
o
If it has been longer than 12 hours since the equipment was last used (or 72
hours if drained, flushed and lubricated) then the equipment must be
disassembled, inspected, and fully serviced in accordance with the latest
revision of the relevant Cosasco ‘Maintenance Work Instruction’. Upon
servicing completion, providing a successful pressure test is completed the
equipment may be used for further service work within 7 days of the successful
test.
o
If the retrieval equipment is used on any fitting containing debris/grit/sand
which is deemed to affect the smooth operation of the equipment then the
equipment at minimum must be drained, flushed and lubricated prior to further
use. Special attention should be given to bleed valve and pressure gauge
assemblies. A successful pressure test must then be carried out prior to the
equipment being used for further retrieval operations.
At the end of the shift, within a 12 hour period the equipment should then be disassembled,
inspected, and fully serviced in accordance with the latest revision of the relevant Cosasco
‘Maintenance Work Instruction’. Upon servicing completion, providing a successful pressure
test is completed the equipment may be used for further service work within 7 days of the
successful test.
Summary of Contents for RBS
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