We are installing a new oil manifold which has MOVs in inlets and test header outlets, Contractor is insisting on including the MOVs in the hydrotest of the manifold. is there any precautions needed or are we putting the valves in any serious danger by not dropping the valves? Project designed...
The DEP 30.48.00.31-Gen article 5.4 reads :
"5.3 COMPATIBILITY WITH EXISTING COATING SYSTEMS:
Before any painting work is commenced, the compatibility with existing coating systems or
layers shall be checked. The paint Manufacturer shall be consulted. If there is any doubt
about compatibility...
As we are approaching commissioning of the oil plant, use of blinds, and spades will be needed to provide double isolation (spade after valve) . in some locations the lines are tight with very heavy wall thikness making it almost impossible to insert a temp spade with thickness to match the line...
What is the criteria for applying hydraulic bolt tension? In shell DEP 31.38.01.31-Gen article 3.12.4 specify hydraulic tension for bolts larger or equal to 1.5" , while in appendix 6 of same document puts hydraulic tension at 2" and above.
On a second note the tables in appendix 6 does not...
