ARPO
ENI S.p.A. Agip Division
PAGE
IDENTIFICATION CODE
179 OF 234
REVISION STAP-P-1-M-6140
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a)
Tighten the first bolt.
b)
Tighten the bolt 180° from the 1 bolt.
c)
Tighten the bolt 90° from the 1 bolt.
d)
Tighten the bolt 180° from the 3 bolt.
e)
Continue this alternating procedure until all bolts have been tightened.
st
st
rd
15.3.5. Primary And Secondary Packing Group Test To properly test the primary and secondary packing groups it is necessary to have the following components and fittings: • • • • • • •
High pressure hydraulic test pump assembly complete with hose. 1 /2” needle valve, /2” NPT Pin. 1 Tee, /2” NPT XX Heavy Box x Box. 3 1 Bushing, /4” x /2” NPT Pin x Box 1 Reducing bushing attached to the pump hose end, /2” NPT Pin x Pin. 1 Nipple, /2” NPT XX Heavy x 10” long; Pressure relief needle valve.
1
After completion of the casing spool and packing assembly, proceed to testing the packing groups with hydraulic oil as follows: 1) 2) 3)
4)
5) 6)
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3
1
Remove the /4 “ NPT plug from the test port and screw on the /4” x /2” NPT bushing. Leave the check valve on seat. Install the test equipment. The test pressure is given in the Drilling Programme. Take care not to exceed 70% of the casing collapse rating. All test pressures should be kept on for at least 15 mins. During the seal test the annulus space valve of the previous casing must be kept open with the 2” LP plug disassembled, as a leak in the primary packing group could put the annulus space under pressure. Upon completion of the test, bleed off all pressure and unscrew the relief needle valve so as to avoid it breaking during the BOP stack movement. Test the BOP with a cup tester. The needle valve must be replaced in its relative test port with the needle completely open. The annulus space valve of the previous casing must be also kept open.