Use of Nitrogen as a pipeline preservative

My question is this a new pipeline is to be preserved for 3 years prior to coming on stream. We have decided to introduce biocide, oxygen scavenger and inhibitor into the hydrotest water prior to the test and afterwards dewater the line. Nitrogen will then be introduced as a preservative for the line. 1. Will the introduction of the above chemicals and oxygen scavenger/inhibitor actually prevent pipeline corrion, since no mater the effiency of our dewatering mechanism there will still be some traces of water left in the line?
2. Will the presence of N2 as a preservative actually prevent the little traces of water left in the pipeline from corroding the pipeline?
3. How do we contain the leakage of N2 from the system since I understand that this is a usual occurence. 4.The pipeline is designed to ASME/ANSI B31.8 CODE, will this code of design be adequate to prevent N2 leaking from the system?

THANKS Adolphus Omodu
Mechanical Engineer Received on Thu Aug 26 11:11:00 2004