0BREGULATION STANDARD

1BUNR – 13

2BBOILERS AND PRESSURE VESSELS

NR13 – Boilers and Pressure Vessels (113.000-5) 13.1. Steam boilers - general provisions. 13.1.1. Steam boilers are equipment for the production and accumulation of steam under pressure greater than atmospheric pressure using any source of energy, except for reboilers and similar equipment used in process units. 13.1.2. For the purposes of this NR (Regulatory Norm), a “Qualified Professional” is considered to be a person with the legal competence to exercise the profession of engineer in activities relating construction projects, monitoring of operation and maintenance, inspection and inspection supervision of boilers and pressure vessels, in conformity with the professional regulations in force in the Country. 13.1.3. Maximum Permitted Working Pressure (PMTP) or Maximum Permissible Working Pressure (PMTA) is the highest pressure value compatible with the project code, the strength of the materials used, the dimensions of the equipment and its operational parameters. 13.1.4. The absence of any of the following items constitutes a serious and imminent risk: a) safety valve with opening pressure set to a value equal or less than the maximum permissible working pressure (PMTA); (113.071-4) b) instrument indicating the accumulated steam pressure; (113.072-2) c) injector or other means of feeding water, independent of the main system, in solid fuel boilers; (113.073-0) d) rapid water drain system for alkali recovery boilers; (113.074-9) e) indication system for controlling the water level or other system preventing overheating due to insufficient feed. (113.075-7)

13.1.5. All boilers shall have affixed to the body, in a location of easy access and clearly visible, an indelible identification plate with at least the following information: (113.001-3 / I2) a) manufacturer;

b) serial number given by the boiler manufacturer;

c) year of manufacture;

d) maximum permissible working pressure;

e) hydrostatic test pressure;

f) steam production capacity;

g) heating surface area;

h) project code and year of edition.

13.1.5.1. In addition to the identification plate, the boiler category, as defined in sub item 13.1.9 of the Regulatory Norm, and its identification number or code shall be indicated in a visible location. 13.1.6. All boilers shall have at the establishment where they are installed the following documentation, properly updated: a) "Boiler Record", containing the following information: (113.002-1 / I3) - project code and year of edition; - specification of materials;

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- procedures used in manufacture, assembly, final inspection and determination of the Maximum Permissible Working Pressure (PMTA); - set of drawings and other data necessary for monitoring the useful life of the boiler; - functional characteristics; - data on safety devices; - year of manufacture; - boiler category; b) "Safety Record", in conformity with sub item 13.1.7; (113.003-0 / I4)

c) "Installation Project", in conformity with item 13.2; (113.004-8 / I4)

d) "Alteration or Repair Projects", in conformity with subitems 13.4.2 and 13.4.3; (113.005-

6 / I4)

e) "Inspection Reports", in conformity with subitems 13.5.11, 13.5.12 and 13.5.13.

13.1.6.1. If non-existent or lost, the “Boiler Record” shall be reconstituted by the owner with the technical responsibility of the manufacturer or “Qualified Professional” mentioned in sub item 13.1.2, it being essential to reconstitute the functional characteristics, data on safety devices and the procedures for determining the Maximum Permissible Working Pressure (PMTA). (113.006-4 / I3) 13.1.6.2. If the boiler is sold or transferred from the establishment, the documents mentioned in paragraphs "a", "d", and "e" of sub item 13.1.6 shall accompany it. 13.1.6.3. When required to do so by the competent authority of the regional agency of the Department of Labor, the owner of the boiler shall submit the documentation mentioned in sub item 13.1.6. (113.007-2 / I4) 13.1.7. The “Safety Record” shall consist of a book with numbered pages or other equivalent system, in which shall be recorded: a) all important occurrences capable of influencing the safety conditions of the boiler; b) periodic and non-routine safety inspections, with mandatory inclusion of the legible name and signature of the "Qualified Professional” mentioned in sub item 13.1.2, and of the boiler operator present on the occasion of the inspection. 13.1.7.1. If the boiler is considered inadequate for use, the “Safety Record” shall contain this information and be formally closed. (113.008-0 / I4) 13.1.8. The documentation referred to in sub item 13.1.6 shall be permanently available for consultation by maintenance operators, inspection personnel and for workers’ and employers’ representations to the Internal Accident Prevention Commission (Cipa), and the owner shall ensure full access to this documentation. (113.009-9 / I3) 13.1.9. For the purposes of this Regulatory Norm, boilers are classified in 3 (three) categories, as follows: a) category A boilers are those whose operating pressure is 1960 KPa (19.98 Kgf/cm2) or higher; b) category C boilers are those whose operating pressure is 588 KPa (5.99 Kgf/cm2) or lower and whose internal volume is 100 (one hundred) liters or less; c) category B includes all boilers that do not fall into the above categories. 13.2. Installation of steam boilers.

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13.2.1. Authorship of the steam boiler "Installation Project", in regard to this Regulatory Norm, shall be the responsibility of the "Qualified Professional", as mentioned in sub item 13.1.2, and shall comply with the safety, health and environmental provisions in the Regulatory Norms, conventions and legal provisions applicable. 13.2.2. The boilers of any establishment shall be installed in the "Boiler Room" or in a location specifically for such purpose, called the "Boiler Area". 13.2.3. If the boiler is installed in an open environment, the "Boiler Area" shall satisfy the following requirements: a) be located at least 3.00 m (three meters) from: (113.010-2 / I4) - other installations in the establishment; - fuel stores, excepting startup tanks of up to 2.000 (two) thousand liters capacity; - the boundaries of third party property; - the boundary with public highways; b) have at least 2 (two) exits of ample proportions, permanently unobstructed and arranged in different directions;

c) have easy and safe access, necessary for operating and maintaining the boiler, any guard rails with gaps being dimensioned so as to prevent people from falling through; (113.011-0 / I4) d) have a system for capturing and discharging gases and particulate material produced by combustion outside the area of operation, satisfying the environmental norms in force; e) have lighting in conformity with the official norms in force; (113.012-9 / I4) f) have an emergency lighting system if operated at night. 13.2.4. If the boiler is installed in a confined environment, the "Boiler Room " shall satisfy the following requirements: (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008) a) form a separate building, constructed of fire-resistant material, with only one wall adjacent other installations in the establishment, but with the other walls at least 3.00 m (three meters) away from other installations, the boundary of third party property, the boundary of public highways and fuel stores, excepting startup tanks of up to 2 (two) thousand liters capacity; (113.013-7 / I4) b) have at least 2 (two) exits of ample proportions, permanently unobstructed and arranged in different directions; c) have permanent ventilation with air intakes that cannot be blocked; d) have a sensor for detecting gas leaks for gas-fueled boilers. e) not be used for any other purpose;

f) have easy and safe access, necessary for operating and maintaining the boiler, any guard rails with gaps being dimensioned so as to prevent people from falling through; (113.014-5 / I3) g) have a system for capturing and discharging gases and particulate material produced by combustion outside the area of operation, satisfying the environmental norms in force; h) have lighting in conformity with the official norms in force, and an emergency lighting system. 13.2.5. Non-compliance with the following requirements constitutes a serious and

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imminent risk: a) for all boilers installed in an open environment, subparagraphs "b" , "d" and "f" of sub item 13.2.3 of this Regulatory Norm; b) for category A boilers installed in confined environments, subparagraphs "a", "b", "c", "d", "e", "g” and “h" of sub item 13.2.4 of this Regulatory Norm; (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008) c) for category B and C boilers installed in confined environments, subparagraphs "b", "c", "d", "e", "g” and “h" of sub item 13.2.4 of this Regulatory Norm. (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008) 13.2.6. If the establishment is not capable of satisfying the provisions of subitems 13.2.3 or 13.2.4, an "Alternative Installation Project " shall be prepared, with additional safety measures to attenuate the risks. 13.2.6.1. The "Alternative Installation Project" shall be submitted by the owner of the boiler for the agreement of the union representation of the predominant professional category in the establishment. 13.2.6.2. If agreement is not reached, as stipulated in sub item 13.2.6.1, the mediation of the regional agency of the Department of Labor can be requested by any of the parties, and, if the impasse persists, the decision shall be made by this agency. 13.2.7. Boilers classified category A shall have an instrument panel installed in a control room, constructed as laid down in the Regulatory Norms applicable. (113.015-3 / I4) 13.3. Safety in the operation of boilers. 13.3.1. All boilers shall have an up-to-date "Operating Manual" in the Portuguese language, in a place easily accessible to operators, containing at least the following: (113.016-1 / I3) a) startup and shutdown procedures; b) routine procedures and operational parameters; c) procedures for emergency situations; d) general procedures for safety, health and conservation of the environment. 13.3.2. Boiler instruments and controls shall be kept calibrated and in good running order, the use of artifices that neutralize the boiler’s control and safety systems constituting a serious and imminent risk. (113.017-0 / I2) 13.3.3. Water quality shall be controlled and treatments implemented when necessary to render the physico-chemical properties of the water compatible with the boiler’s operating parameters. (113.018-8 / I4) 13.3.4. All steam boilers shall mandatorily be under the control and operation of the boiler operator, non-compliance with this requirement characterizing a condition of serious and imminent risk. 13.3.5. For the purposes of this Regulatory Norm, the boiler operator shall be considered as the person who satisfies at least one of the following conditions: a) has the "Safety Training in the Operation of Boilers" certificate and proof of practical training course (b) in conformity with sub item 13.3.11; b) has the "Safety Training in the Operation of Boilers" certificate stipulated in Regulatory Norm NR 13 approved by Administrative Rule no. 02, dated 05.08.84;

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c) has proof of at least 3 (three) years experience in this activity, by May 8th, 1984. 13.3.6. The minimum requirement for participating as a trainee in "Safety Training in the Operation of Boilers" is a certificate of completion of 1st grade. 13.3.7. "Safety Training in the Operation of Boilers" shall mandatorily: a) be technically supervised by the "Qualified Professional" mentioned in sub item 13.1.2; b) be administered by professionals qualified for this purpose; c) comply, at least, with the curriculum proposed in Annex I-A of this Regulatory Norm. 13.3.8. Those responsible for promoting the "Safety Training in the Operation of Boilers" shall be prevented from administering new courses, as well as suffering other legal sanctions applicable, in the event of non-compliance with the provisions of sub item 13.3.7.

13.3.9. All boiler operators shall complete a supervised and documented practical training course in the operation of the boiler that they will operate, with a minimum duration of: (113.019-6 / I4) a) category A boilers: 80 (eighty) hours; b) category B boilers: 60 (sixty) hours; c) category C boilers: 40 (forty) hours. 13.3.10. The establishment in which the supervised practical training course is administered shall give prior notification to the union representation of the predominant professional category in the establishment of the following: (113.020-0 / I3) a) period of the training course; b) entity, company or professional responsible for "Safety Training in the Operation of Boilers"; c) list of training course participants. 13.3.11. Operators shall be constantly recycled by means of constant information regarding the physical and operational conditions of the equipment, technical updating, safety information, participation in courses, and attendance at lectures and relevant events. (113.021-8 / I2) 13.3.12. A serious and imminent risk is constituted if any boiler is operated under conditions different from those specified in the original project, unless: a) it is redesigned, taking into account all the variables involved in the new operating condition; b) all safety procedures resulting from the new classification are adopted in relation to installation, operation, maintenance and inspection. 13.4. Safety in boiler maintenance. 13.4.1. All repairs or alterations to boilers shall comply with the respective construction project code and the instructions of the manufacturer in regard to: (113.022-6 / I4) a) materials; b) execution procedures;

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c) quality control procedures; d) qualification and certification of personnel. 13.4.1.1. If the construction project code is not known, the original boiler design shall be respected, with the strictest control procedure stipulated in the relevant codes. 13.4.1.2. In category A and B boilers, at the discretion of the "Qualified Professional” mentioned in sub item 13.1.2, more advanced calculation technologies or procedures can be used in place of those stipulated by the project codes.

13.4.2. "Alteration or Repair Projects" shall be designed beforehand in the following situations: (113.023-4 / I3) a) whenever the project conditions are modified; b) whenever repairs that may compromise safety are carried out. 13.4.3. The "Alteration or Repair Project" shall: (113.024-2 / I3) a) be designed or approved by the "Qualified Professional", mentioned in sub item 13.1.2; b) determine materials, execution procedures, quality control and qualification of personnel. 13.4.4. All interventions that require machining or welding of parts operating under pressure shall be followed by hydrostatic testing, with the characteristics defined by the "Qualified Professional” mentioned in sub item 13.1.2. (113.025-0 / I4) 13.4.5. Boiler control and safety systems shall be subject to preventive or predictive maintenance. (113.026-9 / I4) 13.5. Inspection of boiler safety. 13.5.1. Boilers shall be subject to initial, periodic and non-routine safety inspections, non-compliance with the periods laid down in the Regulatory Norm being considered a condition of serious and imminent risk. (113.078-1) 13.5.2. The initial safety inspection shall be carried out on new boilers, before they are placed in service, at the location of operation, and shall include internal and external examinations, and hydrostatic and accumulation testing. 13.5.3. The periodic safety inspection, consisting of internal and external examinations, shall be carried out with the following maximum periodicity: a) 12 (twelve) months for category A, B and C boilers; b) 12 (twelve) months for alkali recovery boilers of any category; c) 24 (twenty-four) months for category A boilers, provided that safety valve opening pressures are tested at 12 (twelve) monthly intervals; d) 40 (forty) months for special boilers as defined in item 13.5.5. 13.5.4. Establishments that have their "Own Equipment Inspection Service ", as laid down in Annex II, can extend the periods between safety inspections, complying with the following maximum periodicities: a) 18 (eighteen) months for category B and C boilers; (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008)

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b) 30 (thirty) months for category A boilers. 13.5.5. Boilers that operate continuously and use gases or waste from process units as the main fuel for making use of heat or for environmental control purposes can be considered special if all the following conditions are satisfied: a) they are installed in establishments with their "Own Equipment Inspection Service ", as mentioned in Annex II; b) the interlock system and opening pressure for each safety valve are tested every 12 (twelve) months; c) there are no unexpected variations in steam and gas outlet temperature during operation; d) water quality is analyzed and controlled periodically; e) deterioration of the materials that comprise the main parts of the boiler is controlled; f) they are approved as special class, subject to: - agreement between the union representation for the predominant professional category in the establishment and the employer; - mediation by the Department of Labor regional agency, requested by one of the parties when there is no agreement; - decision by the Department of Labor regional agency when the impasse persists. 13.5.6. On completing 25 (twenty-five) years of use, on the next inspection, boilers shall be subjected to strict integrity assessment to determine the remaining useful life and new maximum periodicities for inspection, if they are still serviceable. (113.027-7 / I4) 13.5.6.1. In establishments that have their "Own Equipment Inspection Service ", as mentioned in Annex II, the limit of 25 (twenty-five) years can be altered depending on the monitoring of boiler conditions, carried out by the above mentioned service. 13.5.7. Safety valves installed in boilers shall be inspected periodically in compliance with the following: (113.028-5 / I4) a) at least once a month, by operation of the lever, in operation, for boilers of categories B and C; b) by disassembling, inspecting and bench testing flanged valves and, in the field, welded valves, recalibrating them at a frequency compatible with operational experience of same, but complying with the maximum periodicity for inspection laid down in sub item 13.5.3 or 13.5.4, where applicable, for boilers of categories A and B.

13.5.8. In addition to the tests stipulated in sub item 13.5.7, safety valves installed in boilers shall be subjected to accumulation tests on the following occasions: (113.029-3 / I4) a) on initial boiler inspection; b) when modified or significantly overhauled; c) when the boiler’s operational parameters are modified or there is a change in the Maximum Permissible Working Pressure (PMTA); d) when the inlet or discharge pipes are modified. 13.5.9. A non-routine safety inspection shall be carried out on the following occasions: a) whenever the boiler is damaged by an accident or other occurrence capable of

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compromising its safety; b) if the boiler is subjected to extensive repair or alteration capable of changing its safety conditions; c) before the boiler is returned to operation, if it has been inactive for more than 6 (six) months; d) when the boiler’s installation location is changed. 13.5.10. The safety inspection shall be carried out by the "Qualified Professional" mentioned in sub item 13.1.2, or by the "Own Equipment Inspection Service ", mentioned in Annex II. 13.5.11. After boiler inspection, an "Inspection Report" shall be issued, and become an integral part of the boiler’s documentation. (113.030-7 / I4) 13.5.12. A copy of the "Inspection Report" shall be sent by the "Qualified Professional” mentioned in sub item 13.1.2, within a maximum period of 30 (thirty) days as from termination of inspection, to the union representation of the predominant professional category in the establishment. 13.5.13. The "Inspection Report", mentioned in sub item 13.5.11, shall contain at least the following: a) data on the boiler’s identification plate; b) boiler category; c) boiler type; d) type of inspection carried out; e) date of commencement and termination of inspection; f) description of inspections and tests carried out; g) inspection results and action taken; h) list of items in this Regulatory Norm or other legal requirements that are not satisfied; i) conclusions; j) recommendations and action required; k) planned date for fresh inspection of the boiler; l) legible name, signature and professional council registration number of the "Qualified Professional", mentioned in sub item 13.1.2, and legible names and signatures of technicians who participated in the inspection.

13.5.14. Whenever the inspection results determine alterations in the identification plate data, this data must be updated. (113.031-5 / I1) 13.6. Pressure vessels - general provisions. 13.6.1. Pressure vessels are equipment that contains fluids under external or internal pressure. 13.6.1.1. The field of application of this Regulatory Norm, in relation to pressure vessels, is defined in Annex III. 13.6.1.2. Pressure vessels covered by the Regulatory Norm are classified in categories

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according to Annex IV. 13.6.2. The absence of any of the following items constitutes a serious and imminent risk: a) safety valve or other safety device with the opening pressure set to the Maximum Permissible Working Pressure (PMTA) or lower, installed directly in the vessel or in the system that includes it; (113.079-0) b) safety device preventing the inadvertent disabling of the valve when it is not installed directly in the vessel; (113.080-3) c) instrument indicating the operating pressure. (113.081-1)

13.6.3. All pressure vessels must have affixed to the body in an easily accessible and clearly visible location an indelible identification plate with at least the following information: (113.032-3 / I2) a) manufacturer; b) identification number; c) year of manufacture; d) maximum permissible working pressure; e) hydrostatic test pressure; f) project code and year of edition. 13.6.3.1 In addition to the identification plate, there shall be in a visible location, an indication of the vessel category, in conformity with Annex IV, and its identification number or code. 13.6.4 All pressure vessels shall have, in the establishment in which they are installed, the following documentation properly updated: a) "Pressure Vessel Record" to be supplied by the manufacturer, containing the following information: (113.033-1 / I2) - project code and year of edition; - specification of materials; - procedures used in the manufacture, assembly, final inspection and determination of the Maximum Permissible Working Pressure (PMTA); - set of drawings and other data necessary for monitoring its useful life; - functional characteristics; - data on safety devices; - year of manufacture; - vessel category; b) "Safety Record" in conformity with sub item 13.6.5; (113.034-0 / I4) c) "Installation Project" in conformity with item 13.7; (113.035-8 / I4) d) "Alteration or Repair Project" in conformity with subitems 13.9.2 and 13.9.3; (113.036-6 / I4)

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e) "Inspection Reports" in conformity with sub item 13.10.8. 13.6.4.1. If non-existent or lost, the "Pressure Vessel Record " shall be reconstituted by the owner with the technical responsibility of the manufacturer or “Qualified Professional” mentioned in sub item 13.1.2, it being essential to reconstitute the functional characteristics, the data on safety devices and the procedures for determining the Maximum Permissible Working Pressure (PMTA). (113.037-4 / I2) 13.6.4.2. The owner of the pressure vessel shall submit, when required to do so by the competent authority of the regional agency of the Department of Labor, the documentation mentioned in sub item 13.6.4. (113.038-2 / I4) 13.6.5. The “Safety Record” shall consist of a book of numbered pages, folders or a system, whether computerized or not, with equivalent reliability, in which the following are recorded:

a) all important occurrences capable of influencing the vessels’ safety conditions; (113.039-0 / I3) b) occurrences of safety inspections. (113.040-4 / I4)

13.6.6. The documentation referred to in sub item 13.6.4 shall be permanently available for consultation by maintenance operatives, inspection personnel and for workers’ and employers’ representations to The Internal Accident Prevention Commission - Cipa, and the owner shall ensure full access to this documentation, including to union representation for the predominant professional category in the establishment, when formally requested. (113.041-2 / I4) 13.7. Installation of pressure vessels.

13.7.1. All pressure vessels shall be installed so that all existing drains, breathers, inspection openings and level, pressure and temperature indicators shall be easily accessible. (113.042-0 / I2) 13.7.2. If pressure vessels are installed in confined environments, the installation shall satisfy the following requirements: (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008) a) have at least 2 (two) exits of ample dimensions, permanently unobstructed and arranged in different directions; (113.082-0) b) have easy and safe access for activities of maintenance and inspection, any guard rails with gaps being dimensioned so as to prevent people from falling through; (113.043-9 / I3) c) have permanent ventilation with air intakes that cannot be blocked; (113.083-8) d) have lighting in conformity with the official norms in force; (113.044-7 / I3) e) have an emergency lighting system. (113.084-6) 13.7.3. If the pressure vessel is installed in an open environment, the installation shall satisfy subparagraphs "a", "b", "d" and "e" of sub item 13.7.2. 13.7.4. Non-compliance with the following subparagraphs of sub item 13.7.2 shall constitute a serious and imminent risk: - "a", "c” and “e" for vessels installed in confined environments; - "a" for vessels installed in open environments; - "e" for vessels installed in open environments and operated at night. 13.7.5. If the establishment is unable to satisfy the provisions of sub item 13.7.2, an "Alternative Installation Project " shall be prepared, with additional safety measures for

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attenuating the risks.

13.7.5.1. The "Alternative Installation Project" shall be submitted by the owner of the pressure vessel for the agreement of the union representation of the predominant professional category in the establishment. 13.7.5.2. If agreement is not reached, as stipulated in sub item 13.7.5.1, the mediation of the regional agency of the Department of Labor can be requested by any of the parties, and, if the impasse persists, the decision shall be made by this agency. 13.7.6. Authorship of the "Installation Project" for pressure vessels in categories I, II and III, as in Annex IV, in regard to compliance with this Regulatory Norm, shall be the responsibility of the "Qualified Professional", as mentioned in sub item 13.1.2, and shall comply with the safety, health and environmental provisions in the Regulatory Norms, conventions and legal provisions applicable.

13.7.7. The "Installation Project" shall contain at least a ground plan of the establishment, with the position and category of each vessel and the safety installations. (113.045-5 / I1) 13.8. Safety in the operation of pressure vessels.

13.8.1. All pressure vessels in categories I and II shall have their own Operating Manual or operating instructions contained in the Operating Manual of the unit in which they are installed, in the Portuguese language, and easily accessible to operators, containing at least the following: (113.046-3 / I3) a) startup and shutdown procedures; b) routine procedures and operational parameters; c) procedures for emergency situations; d) general procedures for safety, health and conservation of the environment. 13.8.2. Pressure vessel instruments and controls shall be kept calibrated and in good operational order. (113.047-1 / I3)

13.8.2.1. The use of artifices that neutralize control and safety systems shall constitute a serious and imminent risk. (113.085-4)

13.8.3. The operation of units containing pressure vessels of categories I and II shall be carried out by a professional with "Safety Training in the Operation of Process Units", non-compliance with this requirement constituting a condition of serious and imminent risk. (113.048-0 / I4) 13.8.4. For the purposes of this Regulatory Norm, a professional with "Safety Training in the Operation of Process Units" shall be a professional who satisfies the following conditions: a) having a "Safety Training in the Operation of Process Units" certificate issued by an institution competent to provide the training; b) have proven experience in the operation of pressure vessels of categories I or II of at least 2 (two) years prior to the coming into force of this Regulatory Norm.

13.8.5. The minimum prerequisite for participation as a trainee in "Safety Training in the Operation of Process Units" is a certificate of completion of 1st grade. 13.8.6. " Safety Training in the Operation of Process Units " shall mandatorily:

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a) be technically supervised by the "Qualified Professional" mentioned in sub item 13.1.2; b) be administered by professionals qualified for this purpose; c) comply, at least, with the curriculum proposed in Annex I-B of this Regulatory Norm. 13.8.7. Those responsible for the provision of "Safety Training in the Operation of Process Units " shall be prevented from administering fresh courses, as well as suffering other legal sanctions appropriate, in the event of non-compliance with the provisions of sub item 13.8.6. 13.8.8. All professionals with "Safety Training in the Operation of Process Units" shall complete a supervised practical training course in the operation of pressure vessels with the following minimum durations: (113.049-8 / I4) a) 300 (three hundred) hours for vessels of categories I and II; b) 100 (one hundred) hours for vessels of categories III, IV and V.

13.8.9. The establishment in which the supervised practical training course is given shall give prior notice to the union representation of the predominant professional category of the following: (113.050-1 / I3) a) period during which the training course is to be carried out; b) entity, company or professional responsible for "Safety Training in the Operation of Process Units"; c) list of training course participants.

13.8.10. Operators shall be constantly recycled by means of constant information regarding the physical and operational conditions of the equipment, technical updating, safety information, participation in courses, and attendance at lectures and relevant events. (113.051-0 / I2)

13.8.11. A serious and imminent risk is constituted if any pressure vessel is operated under conditions different from those specified in the original project, unless: a) it is redesigned, taking into account all the variables involved in the new operating condition;(113.086-2) b) all safety procedures resulting from the new classification are adopted in relation to installation, operation, maintenance and inspection. (113.087-0) 13.9. Safety in pressure vessel maintenance.

13.9.1. All repairs or alterations to pressure vessels shall comply with the respective construction project code and the instructions of the manufacturer in regard to: (113.052-8 / I4) a) materials; b) execution procedures; c) quality control procedures; d) qualification and certification of personnel. 13.9.1.1. If the construction project code is not known, the original vessel design shall be respected, with the strictest control procedure stipulated in the relevant codes.

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13.9.1.2. At the discretion of the "Qualified Professional” mentioned in sub item 13.1.2, more advanced calculation technologies or procedures can be used in place of those stipulated by the project codes.

13.9.2. "Alteration or Repair Projects" shall be designed beforehand in the following situations: (113.053-6 / I3) a) whenever the project conditions are modified; b) whenever repairs that may compromise safety are carried out. 13.9.3. The "Alteration or Repair Project" shall: (113.054-4 / I3) a) be designed or approved by the "Qualified Professional", mentioned in sub item 13.1.2; b) determine materials, execution procedures, quality control and qualification of personnel; c) be publicized to establishment employees who may be involved with the equipment. 13.9.4. All interventions that require welding of parts operating under pressure shall be followed by hydrostatic testing, with the characteristics defined by the "Qualified Professional” mentioned in sub item 13.1.2, taking account of the provisions of item 13.10. (113.055-2 / I4) 13.9.4.1. Hydrostatic testing can be dispensed with for small surface interventions, at the discretion of the "Qualified Professional", mentioned in sub item 13.1.2.

13.9.5. Pressure vessel control and safety systems shall be subject to preventive or predictive maintenance. (113.056-0 / I4) 13.10. Inspection of pressure vessel safety. 13.10.1. Pressure vessels shall be subject to initial, periodic and non-routine safety inspections. (113.057-9 / I4)

13.10.2. The initial safety inspection shall be carried out on new pressure vessels, before they are placed in service, at the final location of operation, and shall include internal and external examinations and hydrostatic testing, bearing in mind the limitations in sub item 13.10.3.5. (113.058-7 / I4)

13.10.3. The periodic safety inspection, consisting of internal and external examinations and hydrostatic testing, shall be carried out with the following maximum periodicity: (113.059-5 / I4) a) for establishments without their "Own Equipment Inspection Service", as mentioned in Annex II:

Vessel Category External Exam Internal Exam Hydrostatic Test I 1 year 3 years 6 years II 2 years 4 years 8 years III 3 years 6 years 12 years IV 4 years 8 years 16 years V 5 years 10 years 20 years

b) for establishments with their "Own Equipment Inspection Service", as mentioned in Annex II:

Vessel Category External Exam Internal Exam Hydrostatic Test I 3 year 6 years 12 years II 4 years 8 years 16 years III 5 years 10 years discretionary IV 6 years 12 years discretionary V 7 years discretionary discretionary

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13.10.3.1. Pressure vessels for which it is physically impossible to carry out the internal or external examination shall alternatively be subjected to hydrostatic testing, bearing in mind the limitations stipulated in sub item 13.10.3.5. (113.060-9 / I4)

13.10.3.2. For vessels with internal filling or with a catalyzer, the periodicity of internal examinations or hydrostatic testing can be extended to coincide with the replacement of the filling or catalyzer, provided that the extension does not exceed 20 (twenty) percent of the period laid down in sub item 13.10.3 of this Regulatory Norm. (113.061-7 / I4) 13.10.3.3. Vessels with internal moisture-absorbent linings shall be hydrostatically tested before the lining is applied, subsequent tests being substituted by alternative techniques. (113.062-5 / I4) 13.10.3.4. If it is not technically feasible, and subject to an entry in the "Safety Record" by the "Qualified Professional” mentioned in sub item 13.1.2, the hydrostatic test can be substituted by another nondestructive test technique or inspection for achieving the same level of safety. (113.063-3 / I4) 13.10.3.5. The following are considered technical reasons rendering hydrostatic testing non-feasible: a) structural strength of the foundation or support of the vessel incompatible with the weight of water that would be used in the test; b) damaging effect of the test fluid on the internal elements of the vessel; c) technical impossibility of purging and drying the system; d) existence of internal lining; e) damaging effect of the test on subcritical defects. 13.10.3.6. Vessels with an operating temperature lower than 0ºC (zero degrees Centigrade) and that operate in conditions in which experience has shown that no deterioration occurs shall not require periodic hydrostatic testing, the internal examination being mandatory every 20 (twenty) years and the external examination every 2 (two) years. (113.064-1 / I4)

13.10.3.7. If there is no alternative, a pneumatic test can be carried out, provided that it is supervised by the “Qualified Professional” mentioned in sub item 13.1.2, and special care is taken, since it is a high-risk activity. (113.065-0 / I4)

13.10.4. Pressure vessel safety valves shall be disassembled, inspected and recalibrated when the periodic internal examination is carried out. (113.066-8 / I4)

13.10.5. Non-routine safety inspections shall be carried out on the following occasions: (113.067-6 / I4) a) whenever the vessel is damaged by an accident or other occurrence that compromises its safety; b) when the vessel undergoes significant alterations or repair, capable of altering its safety condition; c) before the vessel is returned to service, when it has been inactive for more that 12 (twelve) months; d) when there is an alteration in the vessel’s installation location.

13.10.6. The safety inspection shall be carried out by the "Qualified Professional”

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mentioned in sub item 13.1.2 or by the "Own Equipment Inspection Service ", as mentioned in Annex II. (113.068-4 / I4)

13.10.7. After inspection of the vessel, an "Inspection Report " shall be issued and become part of the vessel’s documentation. (113.069-2 / I4) 13.10.8. The "Inspection Report" shall contain at least the following: a) pressure vessel identification; (113.088-9) b) service fluids and pressure vessel category; (113.089-7) c) pressure vessel type; (113.090-0) d) date of commencement and termination of inspection; (113.091-9) e) type of inspection carried out; (113.092-7) f) description of examinations and tests carried out; (113.093-5) g) results of inspections and action taken; (113.094-3) h) conclusions; (113.095-1) i) recommendations and action required; (113.096-0) j) planned date of the next inspection; (113.097-8) k) legible name, signature and professional council registration number of the "Qualified Professional", mentioned in sub item 13.1.2, and legible names and signatures of technicians who participated in the inspection. (113.098-6) 13.10.9. Whenever the inspection results determine alterations in the identification plate data, this data must be updated. (113.070-6 / I1)

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ANNEX I-A

Minimum Curriculum for "Safety Training in the Operation of Boilers" 1. Notions of physical magnitudes and units Duration: 4 (four) hours 1.1. Pressure

1.1.1. Atmospheric pressure 1.1.2. Internal pressure of a vessel 1.1.3. Manometric pressure, relative pressure and absolute pressure 1.1.4. Units of pressure

1.2. Heat and temperature

1.2.1. General notions: what is heat, what is temperature 1.2.2. Heat transfer methods 1.2.3. Specific heat and sensitive heat 1.2.4. Heat transfer at constant temperature 1.2.5. Saturated steam and superheated steam 1.2.6. Saturated steam table

2. Boilers – general considerations Duration: 8 (eight) hours 2.1. Types of boiler and their uses 2.2. Parts of a boiler

2.2.1. Flame tube boilers 2.2.2. Water tube boilers 2.2.3. Electric boilers 2.2.4. Solid fuel boilers 2.2.5. Liquid fuel boilers 2.2.6. Gas boilers 2.2.7. Burners 2.3. Boiler instruments and control devices

2.3.1. Feed device 2.3.2. Level indicator 2.3.3. Level control system 2.3.4. Pressure indicators 2.3.5. Safety devices 2.3.6. Auxiliary devices 2.3.7. Valves and pipes 2.3.8. Fume duct

3. Boiler operation Duration: 12 (twelve) hours 3.1. Startup and shutdown 3.2. Regulation and control

3.2.1. of temperature 3.2.2. of pressure 3.2.3. of power supply 3.2.4. of water level 3.2.5. of pollutants

3.3. Operating faults, causes and action required

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3.4. Daily inspection routine 3.5. Operation of a multi-boiler system 3.6. Procedures in emergency situations 4. Water treatment and boiler maintenance Duration: 8 (eight) hours

4.1. Water impurities and their consequences 4.2. Water treatment 4.3. Boiler maintenance

5. Prevention of explosions and other risks Duration: 4 (four) hours

5.1. General risks of accident and health risks 5.2. Risk of explosion

6. Legislation and normalization Duration: 4 (four) hours

6.1. Regulatory Norms 6.2. Regulatory Norm 13 - NR 13

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ANNEX I-B

Minimum Curriculum for "Safety Training in the Operation of Process Units " 1. Notions of physical magnitude and units Duration: 4 (four) hours 1.1. Pressure

1.1.1. Atmospheric pressure 1.1.2. Internal pressure of a vessel 1.1.3. Manometric pressure, relative pressure and absolute pressure 1.1.4. Units of pressure

1.2. Heat and temperature

1.2.1. General notions: what is heat, what is temperature 1.2.2. Heat transfer methods 1.2.3. Specific heat and sensitive heat 1.2.4. Heat transfer at constant temperature 1.2.5. Saturated steam and superheated steam

2. Process equipment Duration according to the complexity of the unit, with a minimum of 4 (four) hours per item, where applicable.

2.1. Heat exchangers 2.2. Pipes, valves and accessories

2.3. Pumps 2.4. Turbines and ejectors 2.5. Compressors 2.6. Towers, vessels, tanks and reactors 2.7. Furnaces 2.8. Boilers

3. Electricity Duration: 4 (four) hours 4. Instrumentation Duration: 8 (eight) hours 5. Operation of the unit Duration: according to the complexity of the unit

5.1. Description of process 5.2. Startup and shutdown 5.3. Emergency procedures 5.4. Disposing of chemicals and conserving the environment 5.5. Assessment and control of risks inherent in the process 5.6. Prevention of deterioration, explosion and other risks

6. First aid Duration: 8 (eight) hours 7. Legislation and normalization Duration: 4 (four) hours

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ANNEX II

Requirements for Certification of "Own Equipment Inspection Service" Before putting in practice the special intervals between inspections, laid down in subitems 13.5.4 and 13.10.3 of this Regulatory Norm, the company’s "Own Equipment Inspection Services", organized as a sector, section, department, division or equivalent, must be certificated by the National Institute of Metrology, Normalization and Industrial Quality (Inmetro), either directly or through "Certification Bodies " accredited by Inmetro, that will verify the following minimum requirements specified in subparagraphs "a" to "g". This certification can be cancelled where any of these requirements is not complied with: a) existence of company personnel at the boiler or pressure vessel installation location, dedicated exclusively to the activities of inspection, integrity assessment and residual life, with education, qualifications and training compatible with their proposed activity of ensuring safety; b) labor contracted for nondestructive testing certificated in accordance with the regulations in force and for other services that may be required, selected and assessed based on criteria similar to those used for own labor; c) the equipment inspection service proposed shall have a head formally appointed to the management function; d) existence of at least 1 (one) "Qualified Professional", as defined in sub item 13.1.2; e) existence of conditions for maintaining up-to-date the technical archive required for satisfying this Regulatory Norm, as well as mechanisms for distributing information when required; f) existence of written procedures for the main activities carried out; g) existence of apparatus consistent with the proposed activities.

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ANNEX III 1. This Regulatory Norm shall be applied to the following equipment: a) any vessel whose product "PV" is greater than 8 (eight), where "P" is the maximum operating pressure in kPa and "V" its geometric internal volume in m3, including: - heat exchangers, evaporators and similar; - pressure vessels or parts subjected to direct flame that do not fall within the scope of other Regulatory Norms, nor item 13.1 of this Regulatory Norm; - jacketed pressure vessels, including reboilers and reactors; - autoclaves and non-vaporizing thermal fluid boilers; b) vessels containing class "A" fluid, specified in Annex IV, irrespective of the dimensions and the "PV". 2. This Regulatory Norm does not apply to the following equipment: a) transportable cylinders, vessels intended for transporting products, portable compressed fluid reservoirs and fire extinguishers; b) vessels intended for human occupation; c) combustion chambers or vessels that are an integral part of rotary or reciprocating machinery, such as pumps, compressors, turbines, generators, engines, and pneumatic cylinders, and that cannot be characterized as independent equipment; d) ducts and pipes carrying fluid; e) coils for heat exchange; f) tanks and recipients for storage and warehousing of fluids not covered by norms and project codes relating to pressure vessels; g) vessels with an internal diameter of less than 150mm (one hundred and fifty millimeters) for fluids of classes "B", "C" and "D", as specified in Annex IV.

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ANNEX IV

Classification of Pressure Vessels 1. For the purposes of this Regulatory Norm, pressure vessels are classified in categories according to type of fluid and risk potential. 1.1. Fluids in pressure vessels are classified as indicated below:

Class "A": - flammable fluids; - fluids combustible at a temperature of 200º C (two hundred degrees Centigrade) or higher; - toxic fluids with a tolerance limit of 20 (twenty) ppm or less; - hydrogen; - acetylene.

Class "B":

- fluids combustible at a temperature lower than 200º C (two hundred degrees Centigrade); - toxic fluids with a tolerance limit higher than 20 (twenty) ppm;

Class "C":

- water vapor, simple asphyxiating gases or compressed air;

Class "D": - water and other fluids not in class "A", "B" or "C", with a temperature higher than 50ºC (fifty degrees Centigrade).

1.1.1. For classifying mixtures, the fluid presenting the highest risk to workers and installations shall be considered in terms of its toxicity, flammability and concentration. 1.2. Pressure vessels are classified in risk potential groups according to the product “PV”, where “P” is the maximum operating pressure in MPa and “V” the geometric internal volume in m3, as follows:

Group 1 - PV > 100 Group 2 - PV < 100 and PV > 30 Group 3 - PV < 30 and PV > 2.5 Group 4 - PV < 2.5 and PV > 1 Group 5 - PV < 1

Declares, 1.2.1. Pressure vessels that operate in vacuum conditions shall be classified in the following categories:

- category I: for flammable or combustible fluids; - category V: for other fluids.

1.3. The table below gives the classification of pressure vessels in categories according to risk potential groups and the class of fluid contained.

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PRESSURE VESSEL CATEGORIES

Risk Potential Group 1

P.V > 100

2 P.V < 100 P.V > 30

3 P.V < 30 P.V > 2.5

4 P.V < 2.5 P.V > 1

5 P.V < 1 Class of Fluid

Category “A” -Flammable liquids combustible at 200 ºC or higher (Alteration given by SIT Administrative Rule no. 57, of June 19th, 2008) - Toxic with tolerance limit 20 ppm - Hydrogen - Acetylene

I I II III III

“B” - Combustible at 200 ºC or lower - Toxic with tolerance limit > 20 ppm

I II III IV IV

“C” - Water vapor - Simple asphyxiating gases - Compressed air

I II III IV V

“D” - Water or other fluids not in class “A” “B” or “C” with temperature higher than 50 ºC

II II IV V V

Notes: a) Volume in m3 and pressure in MPa; b) 1 MPa equivalent to 10.197 Kgf/cm2.

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MINISTERIO DO TRABALHO E EMPREGO SECRETARIA DE INSPE(:AO DO TRABALHO

PORTARIA N.o 57, DE 19 DE JUNHO DE 2008 (DOU de 24/06/08-Sec;ao l-Pag.137)

"Altera a redar;ao do Norma Regulamentadora n.o 13"

A SECRETARIA DE INSPEC;AO DO TRABALHO e aDIRETORA DO DEPARTAMENTO DE SEGURANC;A E SAUDE NO TRABALHO, no uso de suas atribuiyoes legais, tendo em vista 0 disposto no artigo 200 da Consolida9ao das Leis do Trabalho e no artigo 2° da Portaria n.o 3.214, de 08 de junho de 1978, resolvem:

Art. r Alterar 0 caput dos itens 13.2.4 e 13.7.2, as aHneas "b" e "cO, do item 13.2.5, a alinea "a" do item 13.5.4 e 13.7.4 da Norma Regulamentadora n.o 13 - Caldeiras e Vasos de Pressao, aprovada pela Portaria n.o 23, de 271l21l994, que passam a vigorar com a seguinte reda9ao:

13.2.4 Quando a caldeira estiver instalado em ambiente fochado, a "Casa de Caldeiras" deve satisfazer os seguintes requisitos:

13.2.5 ... b) para as caldeiros da eategoria "A" instalados em ambientes feehados, as alineas "a", "b",

"e", "d", "e", "g" e "h" do subitem 13.2.4 desta NR; c) para ealdeiras das eategorias "B" e "C" instalados em ambientes fechados, as alineas "b",

"c", "d", "e", "g" e "h" do subitem 13.2.4 desta NR;

13.5.4 Estabelecimentos que possuam "Servir;o Proprio de 1nspec;iio de Equipamentos", conforme estabelecido no Anexo II, podem estender seus periodos entre insper;oes de seguranc;a, respeitando os seguintes prazos maxim os:

a) 18 meses para as caldeiras de recuperac;ao de alcalis e as das categorias "B" e "C";

13.7.2 Quando os vasos de pressi'io forem instalados em ambientes fochados, a instalac;i'io dew satisfazer os seguintes requisitos:

13.7.4 Constitui risco grave e iminente 0 000 atendimento as seguintes alfneas do subitem 13.7.2: - "a", "c", "d" e "e" para vasos instalados em ambientesfechados; - "a" para vasos instalados em ambientes abertos; - "e" para vasos instalados em ambientes abertos e que operem a noite.

Art. ZO Alterar 0 quadro "CATEGORIAS DE VASOS DE PRESsAo" do anexo N da Norma Regulamentadora n.o 13, que passa a vigorar com a seguinte redavao:

CATEGORIAS DE VASOS DE PRESSAO

GRUPO POTENCIAL DE RISCO 1 2 3 4 5

CLASSE DE FLUIDO P.V~ P.V < 100 P.V<30 P.V<25 P.V< 1 100 P.V>30 P.V> 2.5 P.V> I

CATEGORIAS "A" - Fluido inflarnavel, combustlvel com temperatura igual au superior a 200°C I I II III III - T6xico com limite de tolenmcia:s 20 ppm - Hidrogenio • Acetileno "B" • Combustive! com temperatura menor que 2000C I II III IV IV - T6xico com limite de tolenmcia > 20 ppm "C" - Vapor de 3.gua

I II III IV V - Gas asfixiante simples - AT comprimido "D"

II III IV V V - Outro fluido

Art. 3° Esta Portaria entra em vigor na data de sua publicayao.

Rum BEA TRIZ VASCONCElLOS VILELA Secretaria de Inspeyao do Trabalho

JUNIA MARIA DE ALMEIDA BARRETO Diretora do Departamento de Seguran<;a e Saude no Trabalho