1、Date of Issue:October 2017 Affected Publication:API Specification 17J,Specification for Unbonded Flexible Pipe,Fourth Edition,May 2014 Addendum 1 Page 2,Section 2,the following shall be added:ASTM D1141,Standard Practice of the Preparation of Substitute Ocean Water Page 53,Section 6.2.4.6,change:The
2、 tensile armors shall be subject to testing to confirm that the potential hydrogen evolution resulting from cathodic charging does not result in hydrogen embrittlement.The testing shall be conducted on degreased wire samples immersed in deaerated seawater(minimum 3%NaCl)with the maximum negative cat
3、hodic potential applied.The wire shall be stressed to at least the maximum utilization level expected in service.The cathodic charging shall be applied for a minimum duration of 150 h.Post-test examination shall be conducted to confirm that no blistering or cracking of the wire sample has occurred.t
4、o:The tensile armor wires shall be tested to confirm that the potential hydrogen evolution resulting from cathodic charging does not result in hydrogen embrittlement.The testing shall be conducted on degreased wire samples immersed in aerated synthetic seawater that conforms to ASTM D1141,with a max
5、imum negative cathodic potential applied per the manufacturers specification.NOTE The default value of the maximum negative potential is 1100 mV measured against the Ag/AgCl reference electrode.The wire shall be stressed to its maximum utilization level expected in service.The cathodic charging shal
6、l be applied for a minimum duration of 150 h.Post-test examination shall be conducted,and the acceptance criterion shall be that no blistering or cracking of the wire sample has occurred.Specification for UnbondedFlexible PipeAPI SPECIFICATION 17JFOURTH EDITION,MAY 2014EFFECTIVE DATE:NOVEMBER 2014ER
7、RATA 1,SEPTEMBER 2016ERRATA 2,MAY 2017ADDENDUM 1,OCTOBER 2017REAFFIRMED,MARCH 2021Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.Neither API nor any of APIs employ
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15、otocopying,recording,or otherwise,without prior written permission from the publisher.Contact the Publisher,API Publishing Services,200 Massachusetts Avenue,NW,Suite 1100,Washington,DC 20001.Copyright 2014 American Petroleum InstituteForewordNothing contained in any API publication is to be construe
16、d as granting any right,by implication or otherwise,for the manufacture,sale,or use of any method,apparatus,or product covered by letters patent.Neither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent.Shall:As used in a standard,“shall”denotes a minimum requirement in order to conform to the specification.Should:As used in a standard,“should”denotes a recommendation or that which is advised but not required in orde
