Pamphlet 057 Ed5-Emergency Shut Off Systems

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Pamfleto 57 para sistemas de emergencia. Instituto del Cloro
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  Pamphlet 7 Emergency Shut Off Systems for ulk Transfer of Chlorine Edition 5 Revision 1 March 2009    i Table of Contents   1.   INTRODUCTION...................................................................................................................1   1.1   S COPE ............................................................................................................................1   1.2   C HLORINE I NSTITUTE S TEWARDSHIP P ROGRAM ...............................................................1   1.3   D EFINITIONS AND  A BBREVIATIONS ...................................................................................1   1.4   S  AFETY P ROGRAMS ........................................................................................................2   1.5   D ISCLAIMER ....................................................................................................................2   1.6    A PPROVAL ......................................................................................................................2   1.7   R EVISIONS ......................................................................................................................2   1.8   R EPRODUCTION ..............................................................................................................3   2.   GENERAL.............................................................................................................................3   2.1   L OADING AND U NLOADING OF C HLORINE B ULK C ONTAINERS ............................................3   2.2   P ERSONAL P ROTECTION .................................................................................................3   2.3   T RAINING ........................................................................................................................3   3.   TRANSFER SYSTEM DESCRIPTION.................................................................................3   3.1   P URPOSE  .......................................................................................................................3   3.2   T HE T RANSFER S YSTEM ..................................................................................................4   3.3   E MERGENCY S HUT - OFF S YSTEM -   P RINCIPLE OF O PERATION ...........................................5   3.4   C OMPONENT D ESCRIPTION -   F IGURE 3-1.........................................................................5   FIGURE 3.1 ..................................................................................................................................6   3.5   E NGINEERED B REAKPOINTS ............................................................................................8   3.6   I NTEGRATION  A ND R ELIABILITY ......................................................................................10   4.   REFERENCES....................................................................................................................10   4.1   I NSTITUTE P UBLICATIONS ..............................................................................................10   4.2   DOT   R EGULATIONS ......................................................................................................10   4.3   NFPA   P UBLICATIONS ....................................................................................................10   4.4   F URTHER  A SSISTANCE ..................................................................................................11   CHECKLIST ...............................................................................................................................12      EMERGENCY SHUT-OFF SYSTEMS FOR BULK TRANSPORT OF CHLORINE   1   1. INTRODUCTION 1.1 S COPE  This pamphlet provides recommended practices for emergency shut-off protection during chlorine transfers involving bulk containers. This pamphlet illustrates a basic shut-off system. For the purposes of this pamphlet the term bulk containers include tank cars and cargo tanks. The concepts behind this design include: ã  automatic shut-off upon container movement or utility failure. ã  ability to activate the system at the tank or remotely for any reason, including a chlorine leak. The pamphlet includes practical design options for a variety of industry accepted systems. 1.2 C HLORINE I NSTITUTE S TEWARDSHIP P ROGRAM The Chlorine Institute, Inc. exists to support the chlor-alkali industry and serve the public by fostering continuous improvements to safety and the protection of human health and the environment connected with the production, distribution and use of chlorine, sodium and potassium hydroxides, and sodium hypochlorite; and the distribution and use of hydrogen chloride. This support extends to giving continued attention to the security of chlorine handling operations. Chlorine Institute members are committed to adopting CI’s safety and stewardship initiatives, including pamphlets, checklists, and incident sharing, that will assist members in achieving measurable improvement. For more information on the Institute’s stewardship program, visit CI’s website at www.chlorineinstitute.org. 1.3 D EFINITIONS AND  A BBREVIATIONS  In this pamphlet, the following meanings apply unless otherwise noted: CFR Code of Federal Regulations chlorine dry chlorine, either gas or liquid DOT U.S. Department of Transportation dry air or nitrogen air or nitrogen dried to a dew point of -40 ° F (-40 ° C) or below measured at the operating pressure; for ambient temperature below 10 ° F (-12 ° C), lower dew point settings will be necessary  2   PAMPHLET 57  fail-safe design redundancy that will permit the isolation valves to close in the event that the utility supplied by the loading/unloading facility to operate the isolation valves is unavailable for any reason Institute The Chlorine Institute, Inc. 1.4 S  AFETY P ROGRAMS  Every site handling chlorine should have an on-going safety program. Periodic training sessions and safety inspections must be conducted in accord with government regulations. Special attention should be directed to the appropriateness of emergency procedures and to equipment to be used in an emergency. Additional information on safety programs is available from the Institute and from chlorine suppliers. 1.5 D ISCLAIMER  The information in this pamphlet is drawn from sources believed to be reliable. The Institute and its members, jointly and severally, make no guarantee and assume no liability in connection with any of this information. Moreover, it should not be assumed that every acceptable procedure is included or that special circumstances may not warrant modified or additional procedures. The user should be aware that changing technology or regulations may require a change in the recommendations herein.  Appropriate steps should be made to ensure the information is current when used. These suggestions should not be confused with federal, state, provincial, municipal or insurance requirements, or with national safety codes. 1.6 A PPROVAL  The Institute's Transportation Issue Team approved Edition 5 on March 24, 2009. 1.7 R EVISIONS  Suggestions for revision should be directed to the Secretary of the Institute. 1.7.1 Significant Revisions in Current Edition Significant updates in this revision as approved include: ã  Updates to formatting and terminology throughout ã  Elimination of references to Barge Pamphlet 79 which has been discontinued ã  Addition of Section 3.5 with recommendations for engineered breakpoints ã  Modification of figure 3-1 ã  Update of the pamphlet checklist
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