NORSOK M-710 TESTING PARAMETERS
O-rings Details:
Size: BS 1806 size -312
Section diameter: 5.33 mm, nominal; 5.23 mm, actual (radial) Groove fill: 64%, calculated
Test Gas: 10 mol% CO2 in methane; certified.
Procdure and Test Conditions
For each test cycle the following procedure and conditions applied:
- the assembly was heated to 100° C and this temperature maintained throughout
- a pressure of 150 bar, using the test gas, was applied
- this pressure was maintained for 72 hours minimum (cycle 1)
- gas was vented in 7.5 minutes at a constant rate of ca20bar/min from 150 bar to atmospheric
- after 1 hour, test pressure was re-applied, for 24 hours (cycle 2)
- subsequent cycles (3-10) were of duration 24 hours.
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After the test, each of the three replicate test 0-rings was quartered and the exposed surfaces rated according to Table B.2 in the NORSOK M 710 Rev 2 standard:
NORSOK Rating for 0-rings
Compound |
Summary Rating (Average of three) |
PASS/FAIL |
Markez Z1412 |
0000 |
PASS |
Summary
MARKEZ Z1412 0-rings (size 312) meet the RGD acceptance requirement given in the NORSOK M-710 standard [Rev. 2, October 2001]. This acceptance applies at all pressure and temperature combinations up to the levels employed above, and only for the groove geometry employed in testing. |
