IGS-ES-014(0) 1372 45 National Iranian Gas Co. Research and Technology Management Standardization Division IGS Iranian Gas Standards Specification for : : Electrical Distribution Panels for C.G.S. Stations ! APPROVED Fax:(9821)-8487-8384 http://igs.nigc.ir nigcigs@nigc.org NIGC , STANDARDIZATION DIV. FOREWORD This standard is intended to be mainly used by NIGC and contractors and has been prepared on interpretation of recognized standards , technical documents , knowledge ,backgrounds and experiences in gas industries at national and international levels. Iranian Gas Standards (IGS) are prepared , reviewed and ammended by technical standard committees within NIGC Standardization Div. and submitted to the NIGC's “STANDARDS COUNCIL“ for approval . IGS Standards are subject to revision , amendment or withdrawal , if required , thus the latest edition of IGS shall be checked/inquired by NIGC users . This standard must not be modified or altered by the end users within NIGC and her contractors. Any deviation from normative references and/or well known manufacturers specifications must be reported to Standardization div. Any comments from concerned parties on NIGC distributed IGS are welcome to technical standards committees and will receive serious attention and consideration should a revision to standards is recommended . GENERAL DEFINITIONS : Throughout this standard the following definitions , where applicable , should be followed : 1- “STANDARDIZATION DIV.“ has been organized to deal with all aspects of industrial standards in NIGC . Therefore , all queries for clarification or amendments are requested to be directed to the mentioned div. 2- “COMPANY “ : refers to national iranian gas company . 3- “SUPLIER“ : refers to a firm who will supply the service , equipment or material to igs specification whether as the prime producer or manufacturer or a trading firm . 4-"SHALL" : is used where a provision is mandatory. 5-"SHOULD" : is used where a provision is advised only. 6-"MAY" : is used where a provision is completely discretionary. ------------------------------------------------Website : http://igs.nigc.ir E-mail : nigcigs@nigc.org . + ,4 - $ !"# $ %" & " ' ( )* (IPS) 4 ' + ,4 - $ ' %" +,- .3 ' $ ' . /0 / !$ ' & " ' ( )* . 4 4 6 7* 8 $ 98 & 0 % ' :6 ,,8 $ . 0 " > , 40# 3 ,486 D 40N . 4 ' 4( E 04+ 4 F 4 " 4 .4 ,4,8 4 > 4G "4 64 4 & " 4% " 40 . " Q K G *- & ( ' $ 4 D 4 ]^ 3 4 + D" ' 3 "Y 3 + 4 #"( 4 - "44O 4 " X MI 4 4 . 6 . . MI M %" . !"# $ %" M M $ "& " ' ( * "0 "& " ' ( * $ ML "/ $ - XG ! 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