ISA 92 00 02-2013 Installation Operation and Maintenance of Toxic Gas-Detection Instruments.pdf

1、 AMERICAN NATIONAL STANDARD ANSI/ISA-92.00.02-2013 Installation, Operation, and Maintenance of Toxic Gas-Detection Instruments Approved 30 September 2013 ANSI/ISA-92.00.02-2013, Installation, Operation, and Maintenance of Toxic Gas-Detection Instruments ISBN: 978-0-876640-45-6 Copyright 2013 by the

2、International Society of Automation. All rights reserved. Not for resale. Printed in the United States of America. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means (electronic mechanical, photocopying, recording, or otherwise), w

3、ithout the prior written permission of the Publisher. ISA 67 Alexander Drive P.O. Box 12277 Research Triangle Park, North Carolina 27709 - 3 - ANSI/ISA-92.00.02-2013 Preface This preface, as well as all footnotes and annexes, is included for information purposes and is not part of ISA-92.00.02-2013.

4、 This document has been prepared as part of the service of ISA toward a goal of uniformity in the field of instrumentation. To be of real value, this document should not be static but should be subject to periodic review. Toward this end, the Society welcomes all comments and criticisms and asks tha

5、t they be addressed to the Secretary, Standards and Practices Board; ISA; 67 Alexander Drive; P. O. Box 12277; Research Triangle Park, NC 27709; Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: standardsisa.org. The ISA Standards and Practices Department is aware of the growing need for attenti

6、on to the metric system of units in general, and the International System of Units (SI) in particular, in the preparation of instrumentation standards. The Department is further aware of the benefits to USA users of ISA standards of incorporating suitable references to the SI (and the metric system)

7、 in their business and professional dealings with other countries. Toward this end, this Department will endeavor to introduce SI-acceptable metric units in all new and revised standards, recommended practices, and technical reports to the greatest extent possible. IEEE/ASTM SI 10, American National

8、 Standard for Metric Practice, and future revisions, will be the reference guide for definitions, symbols, abbreviations, and conversion factors. It is the policy of ISA to encourage and welcome the participation of all concerned individuals and interests in the development of ISA standards, recomme

9、nded practices, and technical reports. Participation in the ISA standards-making process by an individual in no way constitutes endorsement by the employer of that individual, of ISA, or of any of the standards, recommended practices, and technical reports that ISA develops. CAUTION ISA DOES NOT TAK

10、E ANY POSITION WITH RESPECT TO THE EXISTENCE OR VALIDITY OF ANY PATENT RIGHTS ASSERTED IN CONNECTION WITH THIS DOCUMENT, AND ISA DISCLAIMS LIABILITY FOR THE INFRINGEMENT OF ANY PATENT RESULTING FROM THE USE OF THIS DOCUMENT. USERS ARE ADVISED THAT DETERMINATION OF THE VALIDITY OF ANY PATENT RIGHTS,

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14、NS PROVIDED IN CONNECTION WITH SUBMISSION OF A LETTER OF ASSURANCE, IF ANY, OR IN ANY LICENSING AGREEMENTS ARE REASONABLE OR NON-DISCRIMINATORY. ISA REQUESTS THAT ANYONE REVIEWING THIS DOCUMENT WHO IS AWARE OF ANY PATENTS THAT MAY IMPACT IMPLEMENTATION OF THE DOCUMENT NOTIFY THE ISA STANDARDS AND PR

15、ACTICES DEPARTMENT OF THE PATENT AND ITS OWNER. ADDITIONALLY, THE USE OF THIS DOCUMENT MAY INVOLVE HAZARDOUS MATERIALS, ANSI/ISA-92.00.02-2013 - 4 - OPERATIONS OR EQUIPMENT. THE DOCUMENT CANNOT ANTICIPATE ALL POSSIBLE APPLICATIONS OR ADDRESS ALL POSSIBLE SAFETY ISSUES ASSOCIATED WITH USE IN HAZARDOU

16、S CONDITIONS. THE USER OF THIS DOCUMENT MUST EXERCISE SOUND PROFESSIONAL JUDGMENT CONCERNING ITS USE AND APPLICABILITY UNDER THE USERS PARTICULAR CIRCUMSTANCES. THE USER MUST ALSO CONSIDER THE APPLICABILITY OF ANY GOVERNMENTAL REGULATORY LIMITATIONS AND ESTABLISHED SAFETY AND HEALTH PRACTICES BEFORE

17、 IMPLEMENTING THIS DOCUMENT. The following people served as members of ISA Subcommittee ISA92. NAME COMPANY J. Miller, Chair Detector Electronics Corporation R. Seitz, Vice Chair Artech Engineering M. Coppler, Managing Director Det Norske Veritas Certification Inc. S. Baliga General Monitors W. Benn

18、ett Mine Safety Appliances Co. T. Crawford Intertek Testing Services G. Garcha GE Energy R. Goins Lyondell Basell K. Hedrick MSHA Approval b) transportable equipment, and c) portable equipment. This standard is not intended to cover, but may provide useful information, for the following: a) equipmen

19、t of laboratory or scientific type intended only for analysis or measurement purposes; b) equipment intended for underground mining applications (group I equipment); c) equipment intended only for process control applications; d) equipment intended for applications in explosives processing and manuf

20、acture; ANSI/ISA-92.00.02-2013 - 12 e) equipment intended for the detection of a potentially toxic atmosphere resulting from dust or mist in air. 2 References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appli

21、es. For undated references, the latest edition of the referenced document (including any amendments) applies. ANSI/ISA-12.13.01, Performance Requirements for Combustible Gas Detectors ANSI/ISA-60079-29-2 (12.13.02), Explosive Atmospheres Part 29-2: Gas detectors Selection, installation, use and main

22、tenance of detectors for flammable gases and oxygen ANSI/ISA-12.13.04, Performance Requirements for Open Path Combustible Gas Detectors ANSI/ISA-92.00.01, Performance Requirements for Toxic Gas Detectors ANSI/ISA-92.04.01, Performance Requirements for Instruments Used to Detect Oxygen-Deficient/Oxyg

23、en-Enriched Atmospheres National Institute for Occupational Safety and Health (NIOSH) Pocket Guide to Chemical Hazards, Title 29, Part 1910.1000, Occupational Safety and Health Standards Threshold Limit Values for Chemical Substances in the Work Environment Adopted by the American Conference of Gove

24、rnmental Industrial Hygienists (ACGIH) Documentation for Immediately Dangerous to Life or Health Concentrations (IDLHs) (NIOSH Taft Laboratories) OSHA 29 CFR1910, 1000 OSHA Regulation on Air Contamination API RP55 Conducting Oil and Gas Producing and Gas Processing Plant Operations Involving Hydroge

25、n Sulfide MSDS sheets for all gases/vapors present and/or suspected in the site being monitored. 3 Terms and definitions For the purposes of this document, the terms and definitions given in the standards referenced in Clause 2, as well as the following apply. Also, since this is intended as a stand

26、-alone standard, certain definitions within A N S I / ISA-92.00.01 are repeated below for the convenience of the reader. 3.1alarm an audible, visual, or physical signal that alerts the instrument user of a dangerous gas concentration or instrument problem 3.1.1false alarm any alarm that is triggered

27、 by a condition other than the one(s) that the alarm function is set for (ex: high gas alarm caused by RF interference or gas alarm caused by temperature changes) - 13 - ANSI/ISA-92.00.02-2013 3.2alarm-only equipment equipment having an alarm, but not having a meter or other indicating device 3.3ala

28、rm setpoint the selected gas concentration level(s) at which an alarm is activated 3.4ambient air air to which the sensing element is normally exposed. 3.5bump test application of test gas or other means of obtaining a response from the sensor to check its function. This may include the generation o

29、f an alarm. This check is performed without adjustments of sensitivity. NOTE This is also known as a “response check” or “functional check”. 3.6calibration the procedure to adjust the equipment for proper response (e.g., zero level, span, alarm, and range) 3.7calibration gas the known concentration(

30、s) of gas used to set the equipment span or alarm level(s) 3.8clean air air that is free of any substance that will adversely affect the operation of or cause a response from the equipment 3.9consumables materials or components that are depleted or require periodic replacement through normal use of

31、the equipment 3.10control unit that portion of a gas detection equipment that is not directly responsive to the gas, but which responds to the electrical signal obtained from one or more detector heads. This unit is intended to provide meter indication, alarm functions, output contacts and/or alarm

32、signal outputs when utilized with a detector head. 3.11detector head the gas responsive portion of a gas detection equipment located in the area where sensing the presence of gas is desired. It may be integral with or removed from its control unit. NOTE The detector head may incorporate, in the same

33、 housing, circuitry such as signal processing or amplifying components or circuits in addition to the gas sensing element (sensor). ANSI/ISA-92.00.02-2013 - 14 3.12diffusion a process by which the atmosphere being monitored is transported by natural random molecular movement to and from the gas-sens

34、ing element 3.13field check with gas (response check) application of test gas to the sensor to check the response signal or the generation of an alarm, without adjustments of zero, sensitivity, or alarm level 3.14full-scale the maximum claimed operational level of the gas-detection equipment 3.15gas

35、-detection equipment an assembly of electrical and mechanical components (either a single integrated unit or a system comprised of two or more physically separate but interconnected component parts) which senses the presence of a gas and responds by providing an alarm, indica tion, or other output f

36、unctions 3.16gas-sensing element the particular subassembly or element in the gas-detection equipment that, in the presence of a gas, produces a change in its electrical, chemical, or physical characteristics 3.17indication a discrete communication of a measured value or alarm condition 3.18IDLH (Im

37、mediately Dangerous to Life and Health) the maximum concentration from which, in the event of respirator failure, one could escape within 30 minutes without a respirator and without experiencing any escape -impairing (e.g., severe eye irritation) or irreversible health effects 3.19mobile equipment a

38、 continuous-monitoring equipment mounted on a vehicle, such as, but not limited to, a mining machine or industrial truck 3.20nominal voltage the voltage given by manufacturers as the recommended operating voltage of their gas detection equipment. If a range (versus a specific voltage) is given, the

39、nominal voltage shall be considered as the midpoint of the range, unless otherwise specified 3.21PEL (Permissible Exposure Limit) time-weighted average (TWA) concentration that must not be exceeded during any 8-hour work shift of a 40-hour work week, as defined by the Occupational Safety and Health

40、Administration (OSHA) - 15 - ANSI/ISA-92.00.02-2013 3.22portable equipment spot-reading or continuous duty equipment that has been designed to be readily carried from place to place and to be used while it is being carried. A portable equipment is battery powered and includes, but is not limited to

41、a) a hand-held equipment, typically less than 1 kg, suitable for single-handed operation; b) personal monitors, similar in size and mass to the hand-held equipment, that are continuously operating (but not necessarily continuously sensing) while they are attached to the user; and c) larger equipment

42、 that can be operated by the user while it is suspended by hand, by a shoulder strap or by a carrying harness; it may or may not have a hand directed probe. 3.23REL (Recommended Exposure Limit) exposure levels that are safe for various periods of employment, including but not limited to the exposure

43、 levels at which no employee will suffer impaired health or functional capacities or diminished life expectancy as a result of that work experience 3.24range the values of concentrations of toxic gas over which accuracy is ensured by calibration 3.25spot-reading equipment equipment intended to be us

44、ed for short periods of time as required (typically 5 min or less) 3.26sample-draw a method to cause deliberate flow of the atmosphere being monitored to a gas-sensing element 3.27signal-processing detector head an equipment intended to be incorporated with separate signal processing, data acquisiti

45、on, central monitoring, or other similar systems in which the equipment provides a conditioned electronic signal or output indication to systems of the aforementioned type that typically process information from various locations and sources including, but not limited to, gas-detection equipment 3.2

46、8span the algebraic difference between the upper and lower values of a range 3.29stabilization state when three successive readings of an equipment, taken at intervals equal to the maximum t(90) value defined in Annex A (Item 5), indicates no changes greater than the accuracy value defined in Annex

47、A (Item 2) ANSI/ISA-92.00.02-2013 - 16 3.30stationary equipment a gas-detection equipment intended for permanent installation in a fixed location 3.31(TLV-)STEL, (Threshold Limit Value-) Short-Term Exposure Limit a 15-minute Time-Weighted Average (TWA) exposure that should not be exceeded at any tim

48、e during a workday, even if the 8-hour TWA is within the Threshold Limit Value - Time-Weighted Average (TLV-TWA) 3.32test gas toxic gas diluted with clean air or inert gas to a known concentration within the test-gas tolerance stated in Annex A, Item 1 3.33transportable equipment equipment not inten

49、ded to be portable, but which can be moved readily from one place to another 3.34(TLV-)TWA, (Threshold Limit Value-) Time-Weighted Average the time-weighted average concentration for a normal 8-hour work day in a 40-hour work week, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect 3.35toxic gas toxic gases, for the purpose of this standard, are gases that may cause significant health effects at low concentrations. Health effects may include severe skin or eye irritation, pulmonary edema, neurotoxicity, or other potentially fatal condi