1、 AMERICAN NATIONAL STANDARD ANSI/ISA-12.12.03-2011 Standard for Portable Electronic Products Suitable for Use in Class I and II, Division 2, Class I Zone 2 and Class III, Division 1 and 2 Hazardous (Classified) Locations Approved 12 July 2011 ANSI/ISA-12.12.03-2011 Standard for Portable Electronic P
2、roducts Suitable for Use in Class I and II, Division 2, Class I Zone 2 and Class III, Division 1 and 2 Hazardous (Classified) Locations ISBN: 978-1-936007-97-4 Copyright 2011 by ISA, the International Society of Automation. All rights reserved. Not for resale. Printed in the United States of America
3、. 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), without the prior written permission of the Publisher. ISA 67 Alexander Drive P.O. Box 12277 Research Triangle Par
4、k, North Carolina 27709 USA - 3 - ANSI/ISA-12.12.03-2011 Preface This preface, as well as all footnotes and annexes, is included for information purposes and is not part of ANSI/ISA-12.12.03-2011. This document has been prepared as part of the service of ISA toward a goal of uniformity in the field
5、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 that they be addressed to the Secretary, Standards and Practices Board; ISA; 67 Alexander Drive; P. O. Box
6、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 attention to the metric system of units in general, and the International System of Units (SI) in particular, i
7、n 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) in their business and professional dealings with other countries. Toward this end, this Department will
8、 endeavor to introduce SI-acceptable metric units in all new and revised standards, recommended practices, and technical reports to the greatest extent possible. Standard for Use of the International System of Units (SI): The Modern Metric System, published by the American Society for Testing see No
9、te 2 of 4.2 III 1 or 2 21 or 22 a) PEP 1 b) PEP 2 c) Any product that is listed for use in the location or d) Any product when a suitable work permit is in effect; see Note 2 of 4.2 I 1 0 or 1 a) Any product that is listed for use in the location or b) Any product when a gas free work permit is in e
10、ffect II 1 21 a) Any product that is listed for use in the location or b) Any product when a suitable work permit is in effect; see Note 2 of 4.2 NOTE 1 In the United States, an OSHA interpretation of 29CFR1910.399 requires that a listed product be used if it is available. Examples of available list
11、ed products include pagers, flashlights, and some test instruments. - 13 - ANSI/ISA-12.12.03-2011 NOTE 2 The application of PEP 1 and PEP 2 products in a hazardous (classified) location assumes that personnel will take the product with them when they vacate the area. NOTE 3 Text referring to Class I
12、 Division 1 and Class II Division 1 although outside the scope is provided for information only. 6 Portable Electronic Products (PEPs) 6.1 General PEP shall meet the following criteria: a) No available listed apparatus suitable for the area classification and capable of performing the intended funct
13、ion b) Radio frequency energy transmission limited in accordance with 8.3 c) No provisions for forced ventilation d) No sparks visible in normal operation e) No excessive temperatures in normal operation f) No camera flash unless it can be disabled g) No motors unless it can be demonstrated the moto
14、r incorporates non-arcing technology h) No visible damage 6.2 PEP 1 Products meeting the general criteria in 6.1 and all of the following additional criteria may be designated as PEP 1: a) Powered by a maximum of two button cells b) Body-worn and in direct contact with the skin c) No electrical conn
15、ections accessible outside the product Examples are electronic wristwatches and hearing aids that are inserted into the ears. 6.3 PEP 2 Products meeting the general criteria in 6.1 and all of the following additional criteria may be designated as PEP 2: a) Powered by one or more cells, batteries, or
16、 photovoltaic cells b) Cell or battery secured so it will not fall out in the drop test as described of 8.1 c) Body-worn or hand-held d) No external electrical connections or wired accessories are used in the hazardous (classified) location. ANSI/ISA-12.12.03-2011 - 14 - NOTE Bluetooth headset is an
17、 example of a non-wired accessory. e) Exposed terminals (for example battery charging terminals) are either recessed or diode protected to prevent a discharge caused by an accidental shorting of these terminals. f) Power switch in accordance with 8.2 g) No damage that exposes the electrical/electron
18、ic circuitry as a result of the drop test described in 8.1 Examples are some calculators, some medical injection devices, electronic watches with calculators and some cell phones. 7 Administrative controls 7.1 General A process of administrative control and training is necessary to ensure that porta
19、ble products do not present an unacceptable risk of ignition when used in hazardous classified areas. 7.2 PEP 1 and PEP 2 The owner/operator of the hazardous (classified) location should establish a process of inspection in which a qualified person establishes that particular products can be accepte
20、d as PEP 1 or PEP 2. For PEP 1, products can be accepted without additional marking. For PEP 2, all accepted products should be marked in accordance with Clause 9. Supporting documentation for the PEP evaluations should be maintained for the life of the use of those products. This documentation shou
21、ld include information for the product such as reference number or code, product manufacturer and model, owner name, approver name, and date approved or equivalent information. NOTE The supporting documentation reference number or code may be a serial number, an approver generated tag number or othe
22、r means of unique identification to provide tracking with the documentation. 7.3 Safe/Hot Work Permit 7.3.1 Gas Free Work Permit A Gas Free Work Permit should incorporate the following: a) A measurement to confirm the absence of an ignitible concentration of any flammable gas or vapor b) Sampling to
23、 confirm the continued absence of a flammable gas or vapor c) Contingency plans for emergencies Annex A provides an example of a Gas Free Work Permit process that incorporates these requirements and restrictions. - 15 - ANSI/ISA-12.12.03-2011 7.3.2 Dust Free Work Permit A similar concept to the Gas
24、Free Work Permit may also be applied to areas with combustible dusts or ignitible fibers although measurement and sampling are not required. Visual analysis is usually sufficient. 8 Examination and testing 8.1 Drop test For PEP 2, the product shall be able to pass a drop test. The product (or a samp
25、le of the product) in the form in which it is intended to be used, shall be dropped onto a horizontal concrete surface from a height of 2 meters (6 feet 6 inches). The test is repeated six times with the device being dropped in the six orientations that are considered most likely to cause a failure.
26、 At the conclusion of the testing, the integrity of the enclosure shall not have been compromised, the cell or battery shall not have fallen out or become disconnected, and the device shall operate as intended. NOTE If the product is intended to be used only while in a case and the case affords prot
27、ection to the battery, then the drop test is done with the product in its case. For example, a cell phone with a Bluetooth headset. If the product is intended to be used after the product is removed from its case, then the drop test is performed with the product removed from its case, for example, a
28、 cell phone in a body-worn holster that will be removed from the holster to use the phone. 8.2 Power on-off switches Any product with a power on-off switch with contacts that directly interrupt battery current is not acceptable for PEP 2 because the switch may cause an ignition-capable arc. NOTE If
29、the switch operator is not a maintained position device and requires the same action for on and off, then it is likely to be an electronic switch. Generally electronic products use the electronic circuit type of switch. 8.3 Radio frequency energy The radiated radio frequency (9 kHz to 60 GHz) energy
30、 from a product, such as a radio or cell phone, is not considered an ignition source if the power is equal to or below the following limits. If the power is above these limits, the 7.3 Safe/Hot Work Permit shall be used. a) 2 W maximum output averaged over 20 microseconds for Groups A and B and Grou
31、p IIC b) 3.5 W maximum output averaged over 80 microseconds for Group C and Group IIB c) 6 W maximum output averaged over 100 microseconds for Group D and Group IIA d) 6 W maximum output averaged over 200 microseconds for Class II, Class III, or Zone 22 hazardous (classified) locations. NOTE 1 Typic
32、al cell phones radiate under 2 W so their level of radio frequency radiation is acceptable for PEP 2 products. NOTE 2 Work places are not immune to radio frequency interference or harmonics generated by electronic products. Each site may require individual evaluation. NOTE 3 These limits are based o
33、n the limits established in ANSI/ISA-60079-0. ANSI/ISA-12.12.03-2011 - 16 - 9 Marking The marking for PEP 2 should state, “PEP 2, evaluating company name, supporting documentation reference number or code.” - 17 - ANSI/ISA-12.12.03-2011 Annex A (Informative) Example of a Gas Free Work Permit (GFWP)
34、A permit for electrical work in classified locations Date: Time applicable: Location: Permit #: Specific work to be performed: Risk category(s) for activity or device: (Circle one, see matrix): B, C, D, E, F, G Area classification where work will be performed: (Circle one): Division 1/Zone 1, Divisi
35、on 2/Zone 2 The attached matrix defines the minimum safeguards recommended for the specific devices and activities. Initial those safeguards listed below that apply. _ 1. A Job Safety Analysis (JSA) has been conducted for the specific work to be performed per this permit. _ 2. Appropriate action has
36、 been taken to remove the reason(s) for the Division 1 classification during the activity or device use. (Examples: increase ventilation or eliminate source) _ 3. The person responsible for the work will remain at the work site while the work is in progress Name: . _ 4. A combustible gas indicator t
37、est will be conducted before starting and as needed while the work is performed. Proper detector operation has been verified. Name: . _ 5. Firefighting equipment is available in the vicinity of the work. _ 6. Lockout Tagout (LOTO) has been employed where needed to eliminate potential electrical sour
38、ces of ignition. _ 7. Other precautions (describe): . It is the responsibility of the person in charge of the work to have a copy of this permit before work starts and to ensure that all prescribed precautions are followed. GFWP submitted byGFWP approved By Exception(s) to above requirements / Justi
39、fication: Exception(s) approved by: ANSI/ISA-12.12.03-2011 - 18 - Notes: 1 When a GFWP requires that the location be tested with gas detectors, fixed units add to the safety but they may not be used in lieu of portable gas detectors. 2 If extension cords are used in conjunction with 120 VAC electric
40、al tools or other devices, a GFWP is required if the tool or device connects to the extension cord in a classified location. 3 Connections between extension cords and devices or tools should utilize locking means to prevent accidental disconnection. - 19 - ANSI/ISA-12.12.03-2011 Recommended Safeguar
41、d Matrix for Electrical Work in Classified Locations Area Classification Numbers in Table refer to steps in Gas Free Work Permit Devices and Activities Division 1 Zone 1 Division 2 Zone 2 Comments Risk Category A Devices listed or labeled for Div 1 or Zone 1 locations. Examples: Intrinsically safe p
42、ager or radio. Intrinsically safe circuit component maintenance. No GFWP Required Devices must be listed or labeled by a recognized testing laboratory Risk Category B Devices listed or labeled for Div 2 or Zone 2 locations. Examples: Some specific types of test equipment rated as non-incendive. Intr
43、insically safe or non-incendive circuit maintenance. 1,2,3,4,5 No GFWP Required Devices must be listed or labeled by recognized testing laboratory Risk Category C Portable electronic devices (PEPs) including PEP-1 no zoom, no floppy drive PEP 2 possible Digital; with zoom, or floppy drive Gas Free w
44、ork permit required motors Video hand-held type Gas Free work permit required motors Cell phone PEP 2 possible Flashlight Available listed Global Positioning Satellite Receivers GPS hand-held PEP 2 possible GPS on rail car Not acceptable as PEP 2 not carried by a person Transponder Acceptable becaus
45、e no power source Gas detector Available listed ANSI/ISA-12.12.03-2011 - 22 - Product type Potential Suitability Personal monitor device PEP 2 possible Hearing aid In ear or over ear PEP 1 Some parts not in contact with skin. PEP 2 possible Secure ID card Available listed Smart Card Acceptable becau
46、se no power source Smart Key Acceptable because no power source Key fobs (Remote control) IR type PEP 2 possible Radio types PEP 2 possible Garage Door Opener PEP 2 possible Laptops Standard Gas Free work permit required due to suspect motors, suspect high temperatures, openings for ventilation and
47、connections, possible external connections Pressurized Available in Europe Implanted medical devices Pace maker Acceptable because not exposed to atmosphere Defibrillator Acceptable because not exposed to atmosphere External Medical Devices Insulin pump PEP 2 possible Pagers Standard Available liste
48、d Smart type, 2 way PEP 2 possible - 23 - ANSI/ISA-12.12.03-2011 Product type Potential Suitability Portable operator interfaces PEP 2 possible (between laptop & palm, CE class) Hand-helds Gas Free work permit required, similar to laptops - possible high temperatures Personal Digital Assistant PDAs
49、with auxiliary connections Available listed PDAs with no auxiliary connections Available listed Power Tools Battery powered Gas Free work permit required due to known ignition sources motor brushes and switches Line powered Gas Free work permit required due to known ignition sources motor brushes and switches Two-way radios Available listed Respirator Available listed Satellite phone Gas Free work permit required due to suspect output power le
