ISO INTERNATIONAL STANDARD 7201-2 First edition 1991-12-15 Fire extinguishing media - Halogenated hydrocarbons Part 2: Code of practice for safe handling and transfer procedures of halon 1211 and halon 1301 Agents extincteurs -Hydrocarbures halogenes Partie2:Codedebonne pratiquepour les procedures de manipulation etdetransfertsansdangerdeshalons1211et1301 Referencenumber ISO 7201-2:1991(E) ISO7201-2:1991(E) Foreword iso (the International Organization for Standardization)is a worldwide federationofnationalstandardsbodies(isOmemberbodies).Thework of preparing International Standards isnormally carried outthroughIsO technical committees.Eachmemberbodyinterested ina subjectfor whichatechnical committeehas been established hasthe rightto be represented on that committee.Internationalorganizations,govern- mental and non-governmental,in liaison with Iso,alsotakepart in the work.iso collaborates closely with theInternationail Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standardrequiresapprovalbyatleast75%ofthemember bodies casting a vote. InternationalStandardIso7201-2waspreparedbyTechnicalCommittee ISO/TC21,Equipmentforfireprotectionandfirefighting,Sub-Committee SC6,Extinguishingmediaforfirefighting. Iso7201 consists of thefollowingparts,under thegeneral title Fire ex- tinguishingmedia-Halogenatedhydrocarbons: Part1:Specificationsforhalon1211andhalon1301 Part2:Code of practicefor safehandling and transferprocedures - ofhalon1211andhalon1301 ISO 1991 All rights reserved,No part of this publicatlon maybe reproduced orutlized In any form International Organizationfor Standardization Case Postale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 7201-2:1991(E) Introduction Iso7201 is one of a seriesgiving specifications for fire extinguishing media in common use and which are in need of standardization for fire fighting, purposes.This series includes at present the following Inter- national Standards: Iso5923:1989,Fireprotection-Fireextinguishingmedia--Carbon di- iso7202:1987,Fireprotection-Fireextinguishingmedia-Powder Iso7203-1:,FireprotectionExtinguishingmedia-Foam--Part1: Lowexpansionfoam.(Underdevelopment.) These specifications are designed to establish that the medium in can therefore be reasonably sold for fire extinguishing purposes. Thispartof Iso7201givesproceduresforthetransferof halon1211and halon 1301fromonecontainerto another.Theseprocedures canbe applied tothe filling and emptyingof halon fire extinguishers and the containers used in halon extinguishing systems,to the handling of halon shipping containers andto the recoveryof halons from containers which are tobe scrapped,cleaned,internally examined,etc. These procedures are recommended as good practice to reduce un- ontheatmosphere ili