ANSI American Society of Safety Engineers Z390.1-2017 Accepted Practices for Hydrogen Sulfide (H2S) Training Programs.pdf

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1、AmericAn nAtionAl StAndArdANSI/ASSE Z390.1 2017Accepted Practices forHydrogen Sulfide (H2S) Training ProgramsAmericAn Society of SAfety engineerS4Casselogo-1200dpi_vector-1c-outline.pdf 1 1/20/2012 1:31:55 PMANSI/ASSE Z390.1 2017ANSI/ASSE Z390.1 2017This is an ASSE-produced standard. It is copyright

2、 protected and may not be reproduced or distributed to any other party.The information and materials contained in this publication have been developed from sources believed to be reliable. However, the American Society of Safety Engineers (ASSE) as secretariat of the ANSI accredited Z390 committee o

3、r individual committee members accept no legal responsibility for the correctness or completeness of this material or its application to specific factual situations. By publication of this standard, ASSE or the Z390 committee does not ensure that adherence to these recommendations will protect the s

4、afety or health of any persons or preserve property. This is an ASSE-produced standard. It is copyright protected and may not be reproduced or distributed to any other party.ANSI ANSI/ASSE Z390.1 2017 American National Standard Accepted Practices for Hydrogen Sulfide (H2S) Training Programs Secretar

5、iat American Society of Safety Engineers 520 N. Northwest Highway Park Ridge, Illinois 60068 Approved June 30, 2017 American National Standards Institute, Inc. This is an ASSE-produced standard. It is copyright protected and may not be reproduced or distributed to any other party.Approval of an Amer

6、ican National Standard requires verification by ANSI that the requirements for due process, consensus and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached

7、 by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Stand

8、ards is completely voluntary; their existence does not in any respect preclude anyone, whether he/she has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute d

9、oes not develop standards and will in no circumstance give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for int

10、erpretation should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken perio

11、dically to reaffirm, revise or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published September 2017 by American Society of Safety Engineers 520 N. Northwest Hwy Par

12、k Ridge, IL 60068 (847) 699-2929 www.asse.org Copyright 2017 by American Society of Safety Engineers All Rights Reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the U

13、nited States of America American National Standard This is an ASSE-produced standard. It is copyright protected and may not be reproduced or distributed to any other party.Foreword (This Foreword is not a part of American National Standard Z390.1-2017.) The charter of the American National Standard

14、Committee Z390 on Hydrogen Sulfide (H2S) Training was accredited by the American National Standards Institute (ANSI) on January 1, 1993. This standard grew out of the recognition of a need for specialized training dealing with this toxic chemical, above and beyond conventional hazard communications

15、training, due to numerous fatal accidents involving victims and their would-be rescuers succumbing to the effects of hydrogen sulfide. Historically, H2S training issues have been addressed by only a few industries, and the consistency of the training criteria varied greatly from one organization to

16、another. For these reasons, the standard addresses the individual training criteria that should be incorporated into a comprehensive training course. These criteria were developed by combining accepted practices in numerous affected industries. Most significantly, emphasis has been given to the qual

17、ifications and proficiency of individual H2S safety instructors, as well as student performance-based competency and qualifications. The guidelines presented in this document are designed to provide workers the fundamental knowledge to protect themselves from H2S exposure. This document does not inc

18、lude the information necessary to satisfy the requirements of the ANSI/ASSE Z88.2, Practices for Respiratory Protection, and OSHA Respiratory Protection 29 CFR 1910.134. In addition, this document does not provide the site-specific information necessary to work at a particular facility. Governmental

19、 regulations (see OSHA Hazard Communication 29 CFR 1910.1200) specify mandatory requirements for the training of personnel working with or around hazardous chemicals. As a voluntary consensus standard, this document complements those regulations. However, compliance with this standard does not assur

20、e compliance with governmental regulations, and vice versa. The Z390 Committee solicits public input that may suggest revisions to the standard. Such input should be sent to the Secretariat, American Society of Safety Engineers, 520 N. Northwest Highway, Park Ridge, Illinois 60068. Revisions: The Z3

21、90 Committee welcomes proposals for revisions to this standard. Revisions are made to the standard periodically (usually every five years from the date of the standard) to incorporate changes that appear necessary or desirable, as demonstrated by experience gained from the application of the standar

22、d. Proposals should be as specific as possible, citing the relevant section number(s), the proposed wording, and the reason for the proposal. Pertinent documentation would enable the Z390 Committee to process the changes in a timely manner. Interpretations: Upon a request in writing to the Secretari

23、at, the Z390 Committee will render an interpretation of any requirement of the standard. The request for interpretation should be clear, citing the relevant section number(s) and phrased as a request for a clarification of a specific requirement. Oral interpretations are not provided. Only the Z390

24、Committee (through the Z390 Secretariat) is authorized to provide any interpretation of this standard. Approval: Neither the Z390 Committee nor the American National Standards Institute (ANSI) approves, certifies, rates or endorses any item, construction, proprietary device or activity. Appendices:

25、Appendices are included in most standards to provide the user with additional information related to the subject of the standard. Appendices are not part of the approved standard. This is an ASSE-produced standard. It is copyright protected and may not be reproduced or distributed to any other party

26、.Committee Meetings: The Z390 Committee meets on a regular basis. Persons wishing to attend a meeting should contact the Secretariat for information. Standard Approval: This standard was developed and approved for submittal to ANSI by the American National Standards Committee on H2S Training, Z390.

27、Committee approval of the standard does not necessarily imply that all members voted for its approval. At the time of its approval, the Z390 Standards Committee had the following members: Charles Simpson, CSP, Chair Eric Rosemann, CSP, Vice Chair Ovidiu Munteanu, Secretary Timothy R. Fisher, CSP, CH

28、MM, ARM, CPEA, Assistant Secretary Jennie Dalesandro, Administrative Technical Support Organization Represented Name of Representative American Society of Safety Engineers Frank Perry, P.E., CSP Association of Energy Service Companies Kenneth Houston Steve Olson, CSP Central Maintenance the immediat

29、e action plan, telephone numbers and communication methods; the location of nearby residences, businesses, schools, churches, medical facilities and emergency response personnel, safety equipment and supplies available; and evacuation routes. 2.6 Flaring The controlled combustion of the flammable ga

30、ses and vapors discharged from vent piping systems. 2.7 Immediately Dangerous to Life and Health (IDLH) Any atmosphere that poses an immediate hazard to life, impairs ability for self-rescue, or poses immediate irreversible debilitating effects on health. 2.8 Instructor An individual who has success

31、fully completed a course in H2S instructor training from an institution or organization offering such courses or possess significant past experience in instructing in this field. (See Section 5 Instructor Qualification and Proficiency.) 2.9 May Indicates a permissive statement. 2.10 Non-Essential Pe

32、rsonnel Those individuals who are not required to engage in activities to control the hazardous conditions associated with H2S during an emergency. 2.11 Parts Per Million (ppm) As in parts of a vapor or gas per million parts of air, by volume. 2.12 Shall Indicates a mandatory requirement. 2.13 Shoul

33、d Indicates a recommendation which is advised, but not required. 2.14 Occupational Exposure Limit (OEL) A health-based workplace standard to protect workers from adverse exposure (e.g., PELs, TLVs, RELs, WEELs, etc.) adopted by the employer or facility owner. This is an ASSE-produced standard. It is

34、 copyright protected and may not be reproduced or distributed to any other party.AMERICAN NATIONAL STANDARD Z390.1-2017 9 2.15 Venting The process of discharging a gas or vapor to the atmosphere, through piping and/or venting devices, to facilitate the proper and safe dispersion of toxic gas or vapo

35、r and to minimize personnel exposure. 2.16 Visitor An individual who is visiting a job site for a short period of time, and who is not required to provide any of the operational or control activities at the site. Visitors are not exempt from the initial and annual H2S training. 3. Training Criteria

36、for H2S Certification 3.1 H2S Certification Designed for individuals who have the potential to be exposed to H2S in concentrations greater than the occupational exposure limit. Based on the instructor needs assessment, the length of the course may vary, however all of the objectives in Appendix C sh

37、all be met. This certification training should be a minimum of 3-4 hours in length. The certification is valid for a period of one year. The training shall be documented and a H2S certification card stating that the program conforms to ANSI/ASSE Z390.1 shall be presented to the attendee. Retraining

38、shall include all of the information contained in 3.2. These personnel, who have received H2S certification and are subject to working under respiratory protection, shall also have successfully completed a respiratory protection training program, to include medical evaluation and fit-testing if they

39、 are to wear tight-fitting air supplied respirators in these hazardous atmospheres according to ANSI Z88 and/or OSHA 29 CFR 1910.134 or applicable local regulatory requirements. 3.2 Minimum Course Content the hazards, characteristics and properties of H2S and sulfur dioxide (SO2) sources of H2S and

40、SO2 safe exposure limits for H2S and SO2 to include PEL and TLV regulations pertinent to workers on H2S jobsites proper use of H2S and SO2 detection methods used at the workplace recognition of, and proper response to, the warning signals initiated by H2S and SO2 detection systems in use at the work

41、place symptoms of H2S exposure; symptoms of SO2 exposure rescue techniques and first aid to victims of H2S and SO2 exposure proper use and maintenance of respiratory protection equipment for working in H2S and SO2 atmospheres, usage instruction and hands-on practice, with demonstrated proficiency (2

42、9 CFR 1910.134) workplace practices and relevant maintenance procedures that have been established to protect personnel from the hazards of H2S and SO2 wind direction awareness and routes of egress enclosed facility entry procedures emergency response procedures that have been developed for the faci

43、lity or operations locations and use of safety equipment locations of safe briefing areas 3.3 Minimum Course Content for H2S Train the Trainer Course content shall include sufficient instruction to assure competency with regard to the topics required in the H2S certification. Additionally, the stude

44、nt shall receive adequate This is an ASSE-produced standard. It is copyright protected and may not be reproduced or distributed to any other party.AMERICAN NATIONAL STANDARD Z390.1-2017 10 instruction on the following topics from ANSI/ASSE Z490.1, Criteria for Accepted Practices in Safety, Health an

45、d Environmental Training: training program administration and management training development training delivery training evaluation documentation and recordkeeping 3.4 Minimum Requirements for Site-Specific Orientation In addition to the annual H2S certification training, a site-specific orientation

46、 is required for individuals who have the potential to be exposed to H2S in concentrations greater than the occupational exposure limit. At a minimum, personnel shall be briefed on: route(s) of egress use and location of wind indicators emergency assembly area(s) applicable warning signals how to re

47、spond in the event of an emergency use and location of personal protective equipment hands-on training with the specific H2S detector to be used in the field is required prior to use (see Appendix D) 4. Required Course Content 4.1 Physical and Chemical Properties of H2S The physical and chemical pro

48、perties of H2S, including but not limited to the following, shall be discussed as part of H2S training: Synonyms: sulfuretted hydrogen, sulfurated hydrogen, hydrosulfuric acid, H2S, disulfur hydride, sour gas, rotten egg gas, sulfane, sewer gas, swamp gas, sulfur ode hidrogeno, gas venenoso and othe

49、rs Chemical Family: inorganic sulfide Chemical Formula: H2S Normal Physical State: highly toxic, colorless gas, slightly heavier than air. Vapor density = 1.19 (air = 1.00). H2S may collect in low-lying areas or confined spaces. Auto-Ignition Temperature: 500 degrees F (260C) Flash Point: -76.4 degrees F (-60.2C) Melting Point: -117.2 degrees F (-82.9C) Flammable Limits: 4.3% 46% vapor by volume in air Solubility: soluble in water and oil; solubility decreases as the temperature of the liquid inc