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1、DRAFT FOR DEVELOPMENT DD IEC/TS 60519-5:2008 Safety in electroheat installations Part 5: Specifications for safety in plasma installations ICS 25.180.10 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale,
2、10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- DD IEC/TS 60519-5:2008 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008 ISBN 978 0 580 53921 3 National foreword This Dra
3、ft for Development is the UK implementation of IEC/TS 60519-5:2008. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information
4、 and experience of its practical application can be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversion to an international standard. A review of this publication wi
5、ll be initiated not later than three years after its publication by the international organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies rece
6、ived by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into an international Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of the responsible BSI Technical Committee a
7、t British Standards House, 389 Chiswick High Road, London W4 4AL. The UK participation in its preparation was entrusted to Technical Committee PEL/27, Electroheating. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport
8、to include all the necessary provisions of a contract. Users are responsible for its correct application. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not f
9、or Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC/TS 60519-5 Edition 1.0 2008-03 TECHNICAL SPECIFICATION Safety in electroheat installations Part 5: Specifications for safety in plasma installations DD IEC/TS 60519-5:2008 Copyright British S
10、tandards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- CONTENTS 1 Scope and object4 2 Normative references .4 3 Terms and definitions .
11、4 4 Safety requirements in thermal plasma systems design and installation features.5 4.1 Arc plasma torch systems5 4.1.1 General requirements5 4.1.2 Electric circuit5 4.1.3 Direct current arc power supply .5 4.1.4 Torch sockets, plugs and connection cables5 4.1.5 Torch.5 4.1.6 Cooling circuit .6 4.1
12、.7 Gas circuit.6 4.1.8 Ignition device .7 4.1.9 Arc plasma system control.7 4.2 Inductive plasma systems7 4.2.1 General requirements7 4.2.2 Electric circuit7 4.2.3 Power supply.7 4.2.4 Torch sockets, plugs and connection cables8 4.2.5 Torch.8 4.2.6 Cooling circuit .8 4.2.7 Gas circuit.9 4.2.8 Igniti
13、on device .9 4.2.9 Inductive plasma system control10 5 Safety requirements in installations using plasma torches - design and installation features10 5.1 General.10 5.2 Spraying equipment.10 5.3 Heating and thermochemical treating equipment .10 6 Operation of plasma systems and equipment11 6.1 Gener
14、al requirements11 6.2 Protective means of the operator.11 6.3 Starting and stopping 11 6.4 Protection against toxic substances liable to be produced during operation of the torch11 6.5 Protection against overheating 11 6.6 Protection against acoustic noise 12 6.7 Protection against electromagnetic e
15、missions .12 6.8 Protection against particles .12 6.9 Protection against UV radiation .12 6.10 Fire protection.12 6.11 Protection against damage to electric cables, liquid cooling and hydraulic circuit 12 7 Maintenance of plasma systems and installations.12 7.1 General requirements12 2 DD IEC/TS 605
16、19-5:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- 7.2 Specific requirements12 8 Marking, labelling an
17、d technical documentation12 Annex A (informative) Electromagnetic emission threshold values around the torch system in operation.13 Bibliography14 3 DD IEC/TS 60519-5:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001
18、 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- SAFETY IN ELECTROHEAT INSTALLATIONS Part 5: Specifications for safety in plasma installations 1 Scope and object This Technical Specification specifies safety requirements applicable to a)
19、thermal plasma torch systems: arc plasma systems, inductive plasma systems; b) installations using plasma torch systems: spraying equipment, solid, liquid and gaseous charge heating and thermochemical treatment equipment. For both plasma torch systems and installations using plasma torch systems, th
20、is specification determines safety requirements for all components, including the electrical equipment, the cooling circuits, the gas supply circuits, the furnace or reactor and more generally, all other equipment associated with the use of the furnace or reactor. Safety and construction requirement
21、s for plasma torches for welding, cutting and allied processes are specified in IEC 60974-7. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edit
22、ion of the referenced document (including any amendments) applies. IEC 60050-841:2004, International Electrotechnical Vocabulary Part 841: Industrial electroheat IEC 60519-1:2003, Safety in electroheat installations Part 1: General requirements IEC/TS 60680, Test methods of plasma equipment for elec
23、troheat and electrochemical applications CISPR 11, Industrial, scientific and medical (ISM) radio-frequency equipment Electromagnetic disturbance characteristics Limits and methods of measurement 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-
24、841, IEC 60519-1 and IEC/TS 60680 apply. 4 DD IEC/TS 60519-5:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -
25、,-,- 4 Safety requirements in thermal plasma systems design and installation features 4.1 Arc plasma torch systems 4.1.1 General requirements See IEC 60519-1. 4.1.2 Electric circuit See IEC 60519-1, Clause 6. In addition, 6.4.1 of IEC 60519-1 applies to the complete installation. 4.1.3 Direct curren
26、t arc power supply The following specific requirements apply to systems with d.c. arc power supply. 4.1.3.1 Power supply grounding One pole (positive or negative, depending on the torch polarity), on the d.c. side of the arc power supply, shall be grounded using a separated earth from the main one o
27、f the system, so as to avoid possible leakage currents towards electrical circuits such as those used for the torch control. 4.1.3.2 Connection of the power supply to the torch When the torch is off, the cables on the d.c. side shall be grounded through an earth grounding switch, so as to safely han
28、dle the torch. A specific procedure shall be performed before the arc ignition, through a manual locking/unlocking device (generally operated with safety keys), authorizing in particular the main breaker to be online and the earth grounding switch to be in the off position. Moreover, a final clearan
29、ce key may be used by the operator to start the ignition sequence. This procedure shall meet the regulations in force in the country where the equipment is to be installed. 4.1.4 Torch sockets, plugs and connection cables See IEC 60519-1, Clause 8. 4.1.5 Torch An arc plasma torch of any design has t
30、he following characteristic features: a high temperature gas, high voltage (in general) and liquid cooling (generally water). Consequently, the design and construction shall satisfy the following criteria for safe operation: a) electrical features: permanent electrical contact, during operation, bet
31、ween parts designed to be at the same voltage, including the clamping of electrodes and pieces to be earth grounded, to avoid overheating; for a high voltage torch, automatic shut down of the torch in case the leakage current through the torch body excesses 10 mA; permanent electrical insulation bet
32、ween pieces to be brought to different voltages (and specifically between the electrodes), so that no unintended breakdown can occur under normal operating conditions; b) cooling liquid features: 5 DD IEC/TS 60519-5:2008 Copyright British Standards Institution Provided by IHS under license with BSI
33、- Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- cooling liquid resistivity and torch circuit designed to maintain, during operation, the required insulation between pieces to be brought to
34、 different voltages, and specifically the electrodes; in case of electrode break through (accidental or normal wear), the phenomenon shall remain under control firstly through the electrode material and/or design, secondly by its detection to shut down the torch. 4.1.6 Cooling circuit The following
35、specific requirements apply to the cooling utilities: a) mechanical features: the cooling liquid hoses of the torch, fixed or hand operated, shall have a sufficient length, flexibility and appropriate radius of curvature (if any), so as to be facing the stresses generated by the cooling liquid high
36、pressure and to allow handling of the particular hand operated torch; taking into account the high pressure necessary to obtain the specified mass flow rate in the hoses, their mechanical strength shall not be appreciably affected by accidental or steady state exposure to hot particles (hot material
37、 from a furnace) or thermal heating from the torch itself or from hot material coming out from the process; if the direction of the cooling liquid flow is important, it shall be indicated by arrows and/or colour codes on the connecting fittings of the torch and hoses. Non- interchangeable couplers s
38、hall be used; the torch cooling liquid hoses, pipes and fittings shall remain liquid tight in the event of liquid hammer or blocking during operation at the specified mass flow rate, taking into account also the effects of heat on the hoses, also possibly due to radiation and ultra violet radiation;
39、 flexing at the coupling of the cooling liquid inlets and outlets to the torch shall be minimized as far as possible at the torch body and the couplings be provided at least with a basic insulation to reduce the possibility of electrical breakdown within the torch body; b) electrical features: for t
40、he high-voltage torch, the hoses shall be made of insulated material, with length defined to limit the leakage current to a value below 10 mA; the torch shall be electrically shut down when the cooling circuit is disconnected or when the flow rate is below that specified; the operator shall have acc
41、ess to the cooling circuit control and monitoring devices, to be able to read their indications and take necessary steps when required. 4.1.7 Gas circuit The following specific requirements apply to the gas utilities: a) general features: safety rules for the use of industrial gas in high pressure t
42、anks, taking account of the work regulations in force in the country where the equipment is to be installed; b) mechanical features: the gas hoses of installations, fixed or hand operated, shall have a sufficient length, flexibility and appropriate radius of curvature (if any), so as to sustain the
43、constraints generated by the gas high pressure and to allow handling in the case of hand-operated torch; the gas admission hose(s) shall be so designed as to withstand the pressure required to obtain the specified mass flow rate, which shall not be appreciably diminished by accidental or steady-stat
44、e exposure to hot particles or hot material. Their resistance to heat and ultra violet radiation under normal operating conditions shall meet the requirements; 6 DD IEC/TS 60519-5:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing
45、Co/5910770001 Not for Resale, 10/17/2008 23:18:03 MDTNo reproduction or networking permitted without license from IHS -,-,- the fastening of gas hose(s) and pipes to the connecting fittings shall withstand the gas pressure occurring in the event of circuit blockage; c) electrical features: for the h
46、igh-voltage torch, the hose(s) shall be made of insulated material, with length defined to limit the leakage current to a value below 10 mA; a safety device shall prevent the ignition of the torch when the gas circuit is shut off or when the minimum mass flow rate specified by the torch manufacturer
47、 is not reached; the operator shall have access to the gas circuit control and monitoring devices, to read their indications when desired; d) other features: the compressed gas containers installed close to the place of use of the plasma torch shall be protected against possible overheating, electri
48、c discharges and ejections of incandescent material. Similar precautions shall be taken for portable compressed gas containers. 4.1.8 Ignition device The following specific requirements apply to ignition devices: a) high-frequency ignition device: protection against high voltage, in agreement with the regulations in force in the country where the equipment is to be installed; b) short-c