1、A N S I / I S E A 102-1990 (R2015) American National Standard for Gas Detector Tube Units Short Term Type for Toxic Gases and Vapors in Working Environments ANSI/ISEA 102-1990 (R2015) American National Standard for Gas Detector Tube Units Short Term Type for Toxic Gases and Vapors in Working Environ
2、ments Secretariat International Safety Equipment Association Approved May 25, 1990 (reaffirmed February 26, 2015) American National Standards Institute, Inc. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. A
3、n American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether they have approved the standard or not, from manufacturing, marketing, purchasing, or usi
4、ng products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. The American National Standards Institute does not develop standards and will in no circumstances give an interpreta
5、tion of any American National Standard. Moreover, no persons shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time
6、. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or wr
7、iting the American National Standards Institute. Published by International Safety Equipment Association 1901 N. Moore Street, Suite 808, Arlington, VA 22209 Copyright 1990 by International Safety Equipment Association All rights reserved. No part of this publication may be reproduced in any form, i
8、n an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America FOREWORD (This foreword is not part of American National Standard ANSI/ISEA 102-1990) This standard has been drafted to establish a voluntary standard for gas
9、 detector tube units. The standard was developed from the National Institute for Occupational Safety and Health (NIOSH), originally titled 42 Code of Federal Regulations 84-1973. Its use was discontinued in recent years. The purpose of this standard is to provide a means of continual testing of gas
10、detector tube units and components for accurate performance in working environments, by determining the concentration of toxic gases and vapors. This standard was processed and approved for submittal to ANSI by the Canvass Method. The following organizations recognized as having an interest in the s
11、tandardization of diffusive sampling devices were contacted prior to the approval of this standard. Inclusion in this list does not necessarily imply that the organization concurred with the submittal of the proposed standard to ANSI. AFL-CIO International Chemical Workers Union Alliance for America
12、n Insurers Matheson Gas Products American Gas Association Mobil Oil Corporation American Industrial Hygiene Association National Fire Protection Association American Iron and Steel Institute American Mining Congress National Institute for Occupational Safety and Health American Petroleum Institute N
13、ational Safety Council Bituminous Coal Operators Association Occupational Safety and Health Administration Chemical Manufacturer Association Oil, Chemical and Atomic Workers Union Compressed Gas Association Sensidyne, Inc. Edison Electric Institute United Auto Workers Hazardous Material Research Cen
14、ter United Mine Workers Industrial Health Foundation United Steel Workers Industrial Safety Equipment Association U.S. Department of Labor Instrument Society of America International Brotherhood of Electrical Workers Suggestions for the improvement of this standard will be welcome. They should be se
15、nt to the ISEA, 1901 No. Moore Street, #808, Arlington, VA 22209, iseasafetyequipment.org. Contents SECTION PAGE 1. Purpose 5 2. Referenced Standards .5 3. Definitions 5 4. Required Information 6 5. Construction and Performance Requirements .7 5.1 General Requirements 7 5.2 Length of Stain Type Dete
16、ctor Tubes .7 5.3 Color Comparison Type Detector Tubes .7 5.4 Calibration .8 6. Sampling Pumps 8 7. Quality Assurance 9 7.1 Sampling Plan .9 7.2 Acceptable Quality Level .9 7.3 Inspection Levels 9 Appendix Recommendation and Precaution concerning Gas Detector Tube Unit Use 10 ANSI/ISEA 102-1990 (R20
17、15) 5 American National Standard for Gas Detector Tube Units Short Term Type for Toxic Gases and Vapors in Working Environments 1. Purpose This standard sets forth the performance requirements for gas detector tube units and components, which are used to determine the concentrations of toxic gases a
18、nd vapors in working environments. 2. Referenced Standards This standard is intended to be used with the following standards: MIL-STD-105E, 10 May 1989, Military Standard, Sampling Procedures and Tables for Inspection by Attributes1 MIL-STD-414, 11 June 1957, Military Standard, Sampling Procedures a
19、nd Tables for Inspection by Variables for Percent Defective1 3. Definitions batch. A quantity of material defined as lot or batch in MIL-STD-105D, 1989, and MIL-STD-414, 1957. component. Any gas detector tube, sampling pump, or other device that changes the nature of the contaminant so that it may b
20、e measured by the tube, and is designed to operate as a constitute of the tube unit in such a way that the entire unit meets the requirements of this standard. contaminant. A specific chemical substance, usually a toxic gas or vapor, appearing in a workplace air environment. 1 Available from the Gov
21、ernment Printing Office, Washington, DC 20402. cross-sensitive gas or vapor. A gas or vapor that produces a stain similar to that obtained from presence of the contaminant. expiration date. The date until which tubes from the batch shall meet the requirements of this standard, if stored from time of
22、 manufacture according to the storage instructions. gas detector tube. A tube containing a chemically impregnated material which indicates the concentration of the contaminant or group of contaminants in the air by means of a chemically produced color change. Length-of-stain tubes indicate contamina
23、nt concentration by the length of stained formed. Color-comparison tubes indicate concentration by the color or intensity of the stain when compared to measurement standards. Group-type gas detector tube units are those designed and manufactured to measure more than one contaminant. independent tube
24、 reader. A person measuring the length of stain or comparing the color or intensity of stain in a tube unit, in accordance with the instructions furnished by the manufacturer, who is not aided by another person in reading the tube, has no knowledge of other reader results, and has no prior knowledge
25、 of the actual contaminant concentration other than from tube unit readings. interferent gas or vapor. Any gas or vapor that alters the expected stain length, color, or intensity for a given concentration of the contaminant. manufacturer. An individual, partnership, company, corporation, association
26、, or other organization that designs, manufactures, or assembles, a gas detector tube unit. MIL-STD. A specific military standards document approved by the U.S. Department of Defense. ANSI/ISEA 102-1990 (R2015) 6 operating range. The manufacturers stated overall range of measurements for the contami
27、nant. The operating range of the gas detector tube unit may exceed the test standard range. shall. The word shall denotes a mandatory requirement. should. The word should denotes a recommendation. test standard. The contaminant concentration in air that is the current Adopted Value TLV published at
28、the time of certification by the American Conference of Governmental Industrial Hygienists (ACGIH), for each contaminant for the purpose of defining the minimum concentration range to be measured by the tube. test standard range. 0.5 to 5 times the test standard concentration of the contaminant expr
29、essed in terms of parts per million (ppm) or percent by volume or other appropriate unit of measure. tube unit. A device for measuring or signaling the presence of one or more gaseous contaminants in the atmosphere of a working environment, which consists of a gas detector tube and a sampling pump,
30、and which may also include a sample conditioning tube or pyrolyzer or any other components required for proper functioning of the gas detector tube, or any other device, such as an automatic stroke counter, which enhances the convenience or usability of the tube unit. The tube unit as defined herein
31、 consists only of components supplied by the same manufacturer. 4. Required Information 4.1 Each component or set of components shall include instructions stating the additional components with which it has been manufactured for use as a tube unit meeting the requirements of this standard. 4.2 Each
32、sampling pump shall be accompanied by instructions that shall enable the user to verify by a simple field test the capability for accurate flow rate or proper time to fill the pump to full volume, and to verify the absence of leakage. Instructions shall also be provided for making simple corrective
33、adjustments to the pump and for replacing minor parts. 4.3 Each box of gas detector tubes shall be labeled with the following minimum information: (1) Identification of the contaminant or contaminants for which the tubes were manufactured and designed to measure. (2) Test standard range. (3) The exp
34、iration date of the tubes. (4) Manufacturer name, part number, and batch number. (5) Storage instructions. (6) Batch number of sample conditioning tube or applicable device, if included in box of gas detector tubes, and if different from gas detector tube batch number. 4.4 If the operating range is
35、stated on the label it shall be clearly differentiated from the test standard range. 4.5 Each box of gas detector tubes shall be accompanied by the following information: (1) Instructions detailing the measuring procedure using the gas detector tubes, sampling pump, and any required components. (2)
36、Instructions for obtaining contaminant concentration values from tube readings. (3) The temperature, pressure, and humidity at which the tube has been calibrated, and methods for quantitatively correcting tube readings necessitated by use of the tubes at conditions of temperature, pressure, and humi
37、dity other than those at which the tube was calibrated. (4) Limitations of the tube unit in obtaining accurate concentration measurements, including a list of known interferent or cross-sensitive gases or vapors. (5) Basic chemical reactions involved in the operation of the tube, including the chemi
38、cal composition of the reagent with which the contaminant reacts and the end products resulting from the chemical reactions, if known. Where such information is a trade secret, such information need not be set forth. (6) For length-of-stain type detector tubes only, each box of tubes shall be accomp
39、anied by a calibration chart or curve showing those concentrations of each contaminant that the tube measures which correspond to various stain lengths. Alternatively, the chart or curve or other calibration markings may appear directly on, or as part of, each tube. The calibration shall be based up
40、on the method described in 5.4 ANSI/ISEA 102-1990 (R2009) 7 (7) For color-comparison type detector tubes only, each box of tubes shall be accompanied by a color chart showing those concentrations of each gas the tube measures that correspond to various color changes of the indication reagent section
41、 of the detector tube, and to the volumes of the air sampled. The calibration shall be based upon the method described in 5.4 (8) Each sampling pump, pyrolyzer, or other component not packaged inside a box of detector tubes must be identified by serial number or other means of identification so that
42、 the date or batch number of manufacture, or both, may be ascertained. 5. Construction and Performance 5.1 General 5.1.1 The accuracy of gas detector tube units shall be such that measurements made by these units, when used in accordance with the manufacturers instructions, produce measurements of c
43、ontaminant concentrations within 25 percent of the actual value at concentrations of 1, 2, and 5 times the test standard of the contaminant, and with 35 percent of the actual value at a concentration of one-half the test standard. 5.1.2 Gas detector tubes shall continue to meet the performance requi
44、rements of this standard from the date of manufacture until the expiration date, if the tubes are stored according to the manufacturers instructions during the elapsed time. 5.2 Length-of-Stain Type Detector Tubes 5.2.1 In addition to requirements stated in 5.1, length-of-stain type detector tubes s
45、hall produce either of the following: (1) A minimum length of stain such that the calibration point of the calibration chart or curve for a concentration equal to the test standard for the contaminant shall correspond to a stain length of 15 mm or greater (2) At a concentration equal to the test sta
46、ndard for the contaminant, produce a stain with such a clear and sharp end point that the following requirement is met: sx010. where: s = The standard deviation of the tube readings obtained from three or more independent tube readers when reading an individual stained tube. x = Mean value of the tu
47、be readings. 5.2.2 Channeling of air flow through the detector tube shall be minimized so that the maximum variation of stain length around the circumference of the tube at the interface between stained and unstained reagent shall be such that: LM020. L = L2 - L1 where: L2 = The concentration value
48、indicated by the length of the stain at the side of the tube where the stain is farthest extended along the tubes longitudinal axis. L1 = The concentration value indicated by the length of the stain at the side of the tube where the stain is least extended along the tubes longitudinal axis. M = The
49、mean value between L2 and L1 5.2.3 Gas detector tubes should be assembled so that the zero point formed by the surface of the indicating material is perpendicular to the longitudinal axis of the tube. If this interface is not perpendicular, the maximum variation shall not be greater than 2 mm along the longitudinal axis of the tube. 5.3 Color-Comparison Type Detector Tubes. In addition to requirements stated in 5.1, color-comparison type detector tubes shall meet either of the following requirements: (1) Color charts and sampling volume combinations shall be provided for co
