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FILE NAME: New York State & NY Times (NY) DATE: 1961 DOC#: NY080 DOCUMENT DESCRIPTION: NY Dept of Labor Industrial Code, Rule No. 12 [As Amended] / I / 12 NEW YORK. Sf.V;tU State of New York Department of Labor V3'"' BOARD O P STANDARDS AND APPEALS i .. lor.- N .Y . State SEP 3 01988 GOVERNMENT DOCUMENTS The Industrial Code Rule No. 12 CONTROL OF AIR CONTAMINANTS IN FACTORIES O' As Amended Effective April 15,1961 B00066327B B00066327B STATE OF NEW YORK NELSON A. ROCKEFELLER Governor DEPARTMENT OF LABOR M. P. CATHERWOOD Industrial Commissioner BOARD OF STANDARDS AND APPEALS H. Myron Lewis, Chairman George S. Raymond, Member W illiam S. Maxwell, Member 41 Copies of this Rule may bo obtained from tho State of Hew York, Department of Labor, Office of the Administrative Director, The Governor Alfred B, Smith State Office Building, Albany 1, Hew York or State Office Building, 80 Centre Street, Hew York 18, Hew York, a t a cost of 25 cents each. Checks and money orders should be made payable to the ''Industrial Commi8sionerr" JPoBtaga stamps not accepted, 57^ i M o . i'L l 96 ! Printed January, 1961 c . . J ill STATE DF NEW YORK DEPARTMENT OF LABOR SS: BOARD OF STANDARDS AND APPEALS In pursuance of the authority vested in me by subdivision 1 of section 102 of the Executive Law, I, H. MYRON LEWIS, Chairman of the New York State Board of Standards and Appeals, DO HEREBY CER TIFY that the copy of Industrial Code Rule No. 12, Control of Air Contaminants in Factories hereto attached is a correct transcript of the original amendment of said l'ule duly adopted by said Board on the 9th day of January, 1961 and prescribed to take effect on the 15th day of April, 1961, pursuant to the statutory authority of sections 27-a, 28, 29, 200 and 299 of th e Labor Law, and has been duly filed in the office of the Secretary of State of the State of New York on January Given under my hand and the seal of office of the Department o f Labor at the City of Albany on the 17th day o f January, 1961. H. MYRON LEWIS Chairman, New York State Board of Standards and Appeals B00066327B B00066327B EXTRACTS OF THE LABOR LAW Section 28. Rules of the board of standards and appeals. Rules of the board of standards and appeals may be made for 1. The proper sanitation in all places to which this chapter applies and for guarding against and minimizing fire hazards, personal injuries and diseases in all places to which this chapter applies with respect to : a. The construction, demolition, alteration, equipment and mainte nance of all such places, including the conversion of structures into factories, factory buildings and mercantile establishments ; b. The arrangement and guarding of machinery and the storing and keeping of property and articles ; c. The places where and the methods and operation by which trades and occupations may be conducted and the conduct of employers, em ployees and other persons; . It being the policy and intent of this chapter that all places to which it applies shall be so constructed, equipped, arranged, operated and conducted in all respects as to provide reasonable and adequate protec tion to the lives, health and safety of all persons employed therein, and frequenting the same, and that the board shall from time to time make such rules as will effectuate such policy and intent. ***## 2. Whenever the board finds that any industry, trade, occupation or process involves such elements of danger to the lives, health or safety of persons employed therein as to require special regulation for the protection of such persons, the board may make special rules to guard against such elements of danger by establishing requirements as to temperature, humidity, the removal of dusts, gases or fumes, by requir ing licenses to be applied for and issued by the department as a condi tion of carrying on any such industry, trade, occupation or process, by requiring medical inspection and supervision of persons employed or applying for employment, and by other appropriate means. 3. The rules may be limited in their application to certain classes of establishments, places of employment, machines, apparatus, articles, processes, industries, trades or occupations or may apply only to those to be constructed, established, installed or provided in the future. 4. The rules of the board shall have the force and effect of law and shall be enforced in the same manner as the provisions of this chapter. 5. No provision of this chapter specifically conferring powers on the board to make rules shall limit the power conferred by this section. Section 30. Variations. ``If there shall be practical difficulties or unnecessary hardship in carrying out provisions of" the labor law, or of this rule, "the board may make a variation from" the requirements thereof. "Any person affected by such provision or rule, or his agent, may petition the board for such variation stating the grounds therefor." Se'ction 110. Review by board of standards and appeals. 1. Any person in interest or his duly authorized agent may petition the board of standards and appeals for a review of the validity or reasonableness of any rule or order made under the provisions of this chapter. 4 2. T h e petition shall be verified, shall be filed in duplicate with the b o a r d o f standards and appeals and shall state the rule or order proposed to b e reviewed and. in what respects it is claimed to be invalid or un rea so n a b le. Any objections to the rule or order not raised in the petition sh a ll b e deemed waived. The board may join in one proceeding all peti- toons alleging invalidity or unreasonableness of substantially similar r u le s o r orders. The filing of such petition shall operate to stay all pro- Ik c e e d in g s against the petitioner under such rule or order until the deter- '( W m in a tio n of such review. f ***** 'I 5 . T h e decision of the board shall be final unless within thirty days a f t e r i t is filed one of the parties commences an action as provided in s e c t io n one hundred and eleven. S e c t i o n 200. General duty to protect health and safety of em p lo y e e s . A ll places to which this chapter applies shall be so con s tr u c te d , equipped, arranged, operated and conducted as to provide rea so n a b le and adequate protection to the lives, health and safety of all p e r s o n s employed therein. The board shall make rules to carry into e ffe c t th e provisions o f this section. S e c t i o n 299. Ventilation, heating and humidity. ***** ' 2 . A ll machinery creating dust or impurities in quantities tending to in j u r e the health of employees shall be equipped with proper hoods and p ip e s connected to an exhaust fan of sufficient capacity and power to la r e m o v e such dusts or im purities; such fan shall be kept running con- P s t a n t ly while such machinery is in use. If the board decides that such a p p a r a tu s is unnecessary for the health and welfare of the employees, . or t h a t other means of protection may be provided to safeguard the h e a lth and welfare of the employees against such injurious dusts or im p u r itie s, it may adopt rules excepting such machinery from the opera tion o f th is subdivision, or prescribing such requirements as will effec t u a t e th e intent of this subdivision. 3 . I f dust, gases, fumes, vapors, fibers or other impurities are gen e r a te d or released in the course of the business carried on in any work ro o m o f a factory, in quantities tending to injure the health of the em p lo y ees, suction devices shall be provided which shall remove such im p u r itie s from the workroom, at their point of origin where practicable, by m e a n s of proper hoods connected to conduits and exhaust fans. Such fa n s sh all be kept running constantly while the impurities are being g e n e r a te d or released. ***** 5 . I f any requirement of this section or any rule adopted thereunder ; be n o t complied with, the commissioner shall issue an order directing ] com p lian ce therewith within thirty days after the service thereof. He j m ay i n such, order require plans and specifications to be filed, in sucn . | W ca se, before providing or making any change or alteration in any ma- , c h in e r y or apparatus for any of the purposes specified m this section, the p e r so n upon whom such order is served shall file with the commis s io n e r plans and specifications therefor and shall obtain his approval of t h e same. 5 I NOTES The phrase "suffer or permit" as employed in this rule implies knowl edge or the opportunity through reasonable diligence to acquire knowl edge. This presupposes a iair measure of continuity and permanence. The phrase further implies the power to prohibit, prevent or hinder an act or condition. See Peo. ex rel, Price vs Sheffield Farms, etc., 225 N. Y. 25, 80 and Avon Bar and Grill, Inc. vs O'Connell, 276 A.D. 517 and cases cited. The rules of the board have the force and effect of law. A violation of the rules adopted by the Board is punishable as a penal offense. (Penal Law, Section 1275). 6 T H E INDUSTRIAL CODE--RULE No. 12 j CONTENTS i Section No. Subject Page * 12-1 Application ........................................................................... .... 11 12-2 Definitions ........................................................................... 1 12-3 Responsibility of Employers............................................... J 12-4 Responsibility of Employees............................................... .... 13 1i 12--S Existing Equipment ........................................................... .... 14 1 12-6 Prevention of Air Contamination...................................... .... 14 i 12-7 General Maintenance of Equipment.................................... .... 14 ls 12-8 General Control Requirements........................................... .... 14 12-9 General Control M ethods.................................................... .... 14 12-10 Exhaust Systems.................................................................. .... 14 12-11 Isolation or Segregation of Operations............................... ; 12-12 Separation of Different Processes Creating a Hazard........ .... 15 12-13 Prevention of Ignition......................................................... 12-14 12-14J \0 \6.*> Personal Respiratory Protective Equipment...................... XJse ........................................................................................ ..... 15 ..... 15 1? 14 3 ..... 15 12-15 Goggles, Masks and Shields................................................... 15 12-16 12-17 Protective Clothing............................................................. Emergency Flushing Facilities.......................................... ..... 16 12-18 12-19 12-20 12-21 12-22 Flexible Electrical Cords and Portable L ights.................. Mixing and Thinning of Flammable Liquids................... .... 16 Emptied Containers................................................ ........... .... 16 Use of Certain Flammable Liquids................................... ..... 16 ..... 16 12-23 Protection of Adjacent Occupancies .................................. 12-23.1 W all and Ceiling Construction............................................ 12-23.2 12-24 12-24.1 12-24.2 Specific Operations and Specific Control Requirements... Grinding and Polishing WheelB, etc................................... ..... 17 ..... 17 7 f Section No. Subjeet 16-hA. Page ....... 17 ...... 18 ....... 18 ....... 18 ....... 18 1O f>A A t 10 OAA<A ....... 18 ....... 18 ........ 18 ....... 18 ....... 18 ........ 19 ........ 19 ........ 19 ........ 19 ........ 19 ........ 20 lo Orf A1 10 A 0 12-24.7 12-24.8 12-24.9 ........ 20 ......... 20 ......... 20 Crushing, Milling, Screening, Mixing and Conveying.............. 20 ......... 20 Welding, Brazing, Flame Cutting and Metallizing....... ......... 20 ......... 20 ......... 20 ......... 20 Exhaust Gases from Motor Vehicles Operating in Enclosed 12-24.9.1 General provisions ..... ,..... .................................................... 21 12-25 Industrial Products Coating....................................................... 21 12-25.1 Where Performed ....................................................................... 21 12-25.2 Heating .......................................................... 21 12-25.3 Drainage of Flammable Liquid W a ste ...................................... 21 12-25.4 12-25.4.1 12-25.4.2 12-25,4.3 12-25.4.4 12-25.4.5 12-25.4.6 12-25.4.7 12-25.4.8 12-25.4.9 12-25.4.10 12-25.4.11 12-25.4.12 Maintenance and Operation......................................................... 21 Maintenance of equipment..................... ........................... 21 Purging ................................................................................... 22 Floor maintenance ................................................................... 22 Passage space .......................................................................... 22 Containers ............................................................................... 22 Transfer of flammable liquids................................................. 22 Vehicles ................................................................................... 22 Use of different types of coating materials.............................. 22 Mixing and thinning ................................................................ 22 Coating removal by use of solvents........................................... 22 Sanding ................................................................................... 22 Cleaning solvents..................................................................... 22 8 Section No. 12-25.4.13 12-25.4.14 12-25.5 12-25.5.1 12-25.5.2 12-25.5.3 12-25.5.4 12-25.6 12-25.6.1 12-25.6.2 12-25.6.3 12-25.6.4 12-25.6.5 12-25.6.6 12-25.6.7 12-25.7 12-25.7.1 12-25.7.2 12-25.7.3 12-25.7.4 12-25.7.5 12-25.7.6 12-25.8 12-25.8.1 12-25.8.2 12-25.8.3 12-25.8.4 12-25.8.5 12-25.9 12-25.9.1 12-25.9.2 12-25.9.3 12-25.9.4 12-25.9.5 12-25.9.6 12-25.9.7 12-25.9.8 12-25.9.9 12-25.9.11 12-25.9.12 1/--0 12-26.1 it 12-26.3 12-27 12-29 Subject Page Cleaning of hoods and booths................................................ 22 Lining of spray booths .......................................................... 23 Tanks, Troughs and Mechanical Application ......................... 23 Enclosed operations .............................................................. 23 Fire protection ....................................................................... 23 Installation of tan k s............................................................... 23 Heating of liquids................................................................... 23 Forced Drying and Baking......................................................... 23 Construction ........................................................................... 23 Ventilation .............................................................................. 23 Explosion v ents....................................................................... 24 Controls .................................................................................. 24 D am pers.................................................................................. 24 Combination booths................................................................ 24 Cleaning .................................................................................. 24 Storage ...................................... Enclosure of storage rooms..... Location of storage room s...... Floor drainage and door sills Limitation of quantities ........ Container covers...................... Ventilation ............................................ ............. 0 ............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 26 .............. 27 .............. 27 .............. 27 .............. 27 .............. 27 .............. 27 .............. 27 ............... 27 Severability ............................................. ............... 27 ............... 27 ............... 27 ............... 28 ............... 28 ............... 32 ............... 32 9 RULE promulgated by the Boa/rd of Standards and Appeals pursuant to Sections 27-a, 28, 29, 200 and 289 of the Labor Law. THE INDUSTRIAL CODE--RULE No. 12 CONTROL OP AIR CONTAMINANTS IN FACTORIES , 12-1 APPLICATION This rule applies in and to all factories in the State of New York except as otherwise provided by law and to all persons employed therein and to their employers in respect to all materials, processes and opera tions generating, releasing or disseminating air contaminants. In re spect to contaminants resulting from such processes or operations the following rules, which contain references to the prevention and control of air contaminants, and other provisions of the Industrial Code in regard thereto which may be adopted after November 1, 1968, shall govern where inconsistent with this rule: Industrial Code Rule No. 4 -- Relating to Bakeries and Confection eries. Industrial Code Rule No. 10 -- Relating to Equipment, Maintenance and Sanitation of Foundries and the Control of Dust, Gases and Fumes in Foundries. Industrial Code Rule No. 11 -- Relating to Milling Industry and Malt . House Elevators. Industrial Code Rule No. 23 -- Relating to Protection o f Persons Em ployed in Construction and Demolition Work. Industrial Code Rule No. 27 -- Relating to Laundry Work. Industrial Code Rule No. 29 -- Relating to Dry Dyeing Plants and Dry Cleaning Plants. Industrial Code Rule No. S3-- Relating to Control of Silica Dust in Rock Drilling. Industrial Code Rule No. 34 -- Relating to Control of Silica Dust in Stone Crushing Operations. Industrial Code Rule No. 35 -- Relating to Control of Silica Dust in Stone Cutting and Stone Finishing Industry. Industrial Code Rule No. 38 -- Relating to Radiation Protection. The provisions of Industrial Code Rule No. 18 relating to exhaust systems shall apply for operations not specifically covered by the above rules. 12-2 DEFINITIONS As used herein and in connection with this rule the following terms mean: 12-2.1 Air Contaminants. Air-borne substances, such as dusts, fibers, fumes, gases, mists, vapors and other impurities. 11 3 12-2.2 Air Mover. Any device which produces forced air flow, su e l as a fan, ejector, or natural draft stack. 12-2.8 Approved. In respect to a device or m aterial: in c o m p lia n t with a subsisting resolution of approval adopted by the Board; in i ' e spect to action by the Board: made the subject of a resolution approval. 12-2.4 Board. The Board of Standards and Appeals of the S tate o New York. 12-2.5 Commissioner. The Industrial Commissioner of the State o New York. 12-2.6 Confined Space. A space so enclosed that dangerous air c o n tamination therein cannot be prevented or removed by natural v e n tiln tion through openings in the enclosure. 12-2.7 Control Equipment. Equipment used to prevent air c o n tamination or reduce or remove air contaminants. 12-2.8 Dangerous Air Contaminants. Air contaminants in q u a n ti ties tending to injure the health of employees or creating a fire o explosion hazard, or in quantities greater than 25 percent of the lo w e explosive level of any mixture or compound which they may form. 12-2.9 Dilution Ventilation. A ventilation system other than Io c s ventilation which reduces air contamination to safe levels by the in tr c Auction of uncontaminated air. 12-2.10 Dipping. The application of industrial products c o a tin material by means of total or partial immersion. 12-2.11 Employee. A person employed; one who works for w a g e or salary in the service of another. 12-2.12 Exhaust System. A ventilating system operating u n d e negative pressure for the control of air contaminants. 12-2.18 Fibers. Particles produced by handling, cutting, strippinj spinning or weaving of cotton, wool, fur, asbestos or other m atei i. constituted of thread-like or slender elements. 12-2.14 Flammable. Capable of igniting and continuing to b u r when brought in contact with an open flame, glowing combustion t other source of ignition and, for liquids, having a flash point of 200 J or less. 12-2.15 Impregnating. Application of liquid material by perm e; tion or saturation. 12-2.16 Industrial Products Coating. Application of paint a r similar finishing material by dipping, impregnating, spraying or sp rea . ing, including operations incidental to such work and subsequent d r y ir operations, where the finishing material contains flammable or t o x solvents or materials. 12-2.17 Local Exhaust Ventilation. A system of ventilation for c c lecting and removing air contaminants at the source of generation. 12-2.18 Mechanical Ventilation. A system of ventilation h a v in g power-driven air mover. 12 i 12-2.19 Open Surface Tank Operation. An operation which involves the use of a tank containing liquid with the liquid surface directly ex posed to the work atmosphere. These operations may include but are not limited to washing, electroplating, anodizing, pickling, quenching, dyeing, dipping, tanning, dressing, bleaching, degreasing, alkaline cleaning, stripping, rinsing, digesting and other similar operations. 12-2.20 Personal Respiratory Protective Equipment. A respirator or other device worn for the purpose of preventing the wearer from inhaling harmful amounts of air contaminants. 12-2.21 Practicable. Capable of being done without disturbing es sential functions or essential structural elements. 12-2.22 Recirculation. The return of part or all of the exhaust air to any space occupied by employees. 12-2.23 Shall. The word "shall" is always mandatory. 12-2.24 Spraying. The application of liquid material in the form of a mist. 12-2.25 Spreading. The application of liquid material to a surface by brush, roller, flow or similar method. 12-2.26 Tumbling Process. Any process in which articles, pieces or parts are placed in a rotating barrel, drum, mill or cage for the purpose of removal of rust, scale, debris or dust as well as for the purpose of smoothing, polishing, burnishing or cleaning by means of agitation. 12-2.27 Work Atmosphere. The atmosphere to which an employee is exposed in the course of performing his work. 12-2.28 Working Area or Space. The area or space normally occu pied or traversed by an employee while at work. 12-3 RESPONSIBILITY OF EMPLOYERS 1. Every employer shall effect compliance with the provisions of this rule relating to the prevention and removal of air contaminants, the storage and use of flammable liquids and the provision, installation, operation and maintenance of control or protective equipment. 2. Every employer shall instruct his employees as to the hazards of their work, the use of the control or protective equipment, and their responsibility for complying with this rule. 3. No employer shall suffer or permit an employee to work in a room in which there exist dangerous air contaminants in a work atmosphere. 4. No employer shall suffer or permit dangerous air contaminants to accumulate or remain in any factory. 12-4 RESPONSIBILITY OF EMPLOYEES Every employee shall use the control and protective equipment pro vided for his protection and shall comply with all provisions of this rule relating to his personal conduct. 13 12-5 EXISTING EQUIPMENT Control equipment installed prior to November 1, 1958 in accordance with the provisions of the Industrial Code then in effect and which is so maintained is exempt from all other or different provisions of this rule while such maintenance continues. 12-6 PREVENTION OF AIR CONTAMINATION All operations producing air contaminants shall he so conducted that the generation, release or dissemination of air contaminants is kept at the lowest practicable level. In any factory where the sources of air contamination are by reason of their extent, quantity or kind incapable of producing dangerous air contaminants, the provisions of this rule shall not apply. 12-7 GENERAL MAINTENANCE OF EQUIPMENT All equipment used to effect compliance with this rule shall be main tained in good condition and in accordance with the requirements of the law and the Industrial Code. 12-8 GENERAL CONTROL REQUIREMENTS Dangerous air contaminants shall be removed or controlled as pre scribed in this rule. 12-9 GENERAL CONTROL METHODS One or more of the following methods shall be used to prevent, remove or control dangerous air contaminants: 1. Substitution of a material or a method which does not produce dangerous air contaminants. 2. Local exhaust ventilation conforming to the requirements of In dustrial Code Rule No. 18. 3. Dilution ventilation. 4. Application of water or other wetting agent. 5. Enclosure or isolation. 6. Other methods approved by the Board. 12-10 EXHAUST SYSTEMS Every exhaust system required by this rule shall be constructed, installed, operated and maintained in compliance with the provisions of Industrial Code Rule No. 18 relating to Exhaust Systems. 12-11 ISOLATION OR SEGREGATION OF OPERATIONS All processes or operations releasing or disseminating dangerous air contaminants'shall be isolated, enclosed, or otherwise segregated insofar as practicable. 14 12-12 SEPARATION OP DIFFERENT PROCESSES CREATING A HAZARD Where processes generate different air contaminants which could, if intermixed, result in a fire or explosion hazard, such contaminants shall be exhausted by separate systems so as to eliminate such possibility. 12-13 PREVENTION OF IGNITION All processes or operations using or generating air contaminants which constitute a fire or explosion hazard shall be protected from sources of accidental ignition. Unless such processes or operations are isolated by tight partitions or enclosures they shall not be conducted within 20 feet of any materials, devices or operations which produce flames or sparks including, by way of illustration but not by way of limitation, engines, motors, welding and soldering torches. All processes and operations within 20 feet of any spark or flame producing work such as welding shall be discontinued and all ignitible air contaminants, flammable liquids and accumulated flammable residue Bhall be removed from the area of the flame or spark hazard before such work is begun. 12-14 PERSONAL RESPIRATORY PROTECTIVE EQUIPMENT 12-14,1 Use. Personal respiratory protective equipment shall not i be used in lieu of other control methods, except for protection of em ployees in emergencies and in the repair, maintenance or adjustment of equipment or processes, or upon specific approval by the Board. i 12-14.2 Approval. Personal respiratory protective equipment shall be of a type approved by the Board for the particular class of substance or substances constituting the air contaminant. Note: A list of approved respiratory protective equipment may be secured from the Board. 12-14.8 Maintenance. Personal respiratory protective equipment shall be stored in air-tight containers or cabinets or m an uncontami nated area. Equipment shall be cleaned, serviced and rep ired to main tain it in effective working condition and it shall be sterilized before use by any person other than the last wearer. 12-15 GOGGLES, MASKS AND SHIELDS All employees exposed to air contaminants tending to injureor irritate the eyes shall be provided with and shall wear either safety goggles, close-fitting chemical goggles or an effective face mask or shield. .An employee requiring prescription lenses in the normal performance ox his work shall be supplied with prescription goggles or with goggles designed to fit over his regular spectacles. 12-16 PROTECTIVE CLOTHING h" All employees exposed to air contaminants which tend to cause skin irritation or skin diseases, or which can be absorbed through the skin in amounts tending to injure the health, colts headeear 1 pgrloiavtees, cslleeaenve, sporrotaepcrtoivnes acslonteheindged, osurcwhhearse csouvitearballels., coats, headgear, 15 r 12-17 EMERGENCY FLUSHING FACILITIES Emergency showers or other facilities for flushing the skin and body ^ members shall be provided within 50 feet of the working position where . employees may be exposed to sudden and severe concentrations of cor rosive air contaminants. f 12-18 FLEXIBLE ELECTRICAL CORDS AND PORTABLE LIGHTS Flexible electrical cords used in any area where flammable liquids are being used or stored or where flammable air contaminants may be pres ent shall be of the three-conductor, extra heavy service type manufac tured for the purpose and shall be fully insulated and grounded. All connections shall be explosion-proof. Portable lights used in such areas shall be shielded against breakage. 12-19 MIXING AND THINNING OF FLAMMABLE LIQUIDS The mixing and thinning indoors of flammable liquids in unit quanti ties greater than 55 gallons shall be done only in a mixing or spraying room and in such manner and under such ventilation as will effect compliance with this rule. Lesser quantities shall be mixed or thinned indoors only in such a room or within a hood, booth or working area provided w ith such ventilation. 12-20 EMPTIED CONTAINERS Emptied drums or other containers shall not be stored indoors unless they have been purged of all contents constituting or creating danger ous air contaminants. Purging shall be done in a mechanically venti lated area i f performed indoors. Compressed air shall not be used for purging containers. 12-21 USE OF CERTAIN FLAMMABLE LIQUIDS The use of flammable liquids having a flash point of 100 F. or less determined by the Tagliabue open-cup test for paint removal or clean ing or any other process in which they are unprotected and exposed, shall be restricted to areas provided with mechanical ventilation creat ing an air movement of at least 100 f.p.m, over the surface of the work while the work is being carried on. The use of benzene for such opera tions is prohibited. 12-22 REFUSE MATERIAL In the vicinity of every process or operation to which this rule applies there shall be provided metal containers with self-closing covers and bearing the notice "FLAMMABLE WASTE." Such containers shall be used for scrapings, sweepings and other waste containing or consisting of flammable material. Such refuse shall be disposed of at the end of each day by burying, burning or other safe treatment but no such refuse shall be burned in a furnace. 16 12-23 PROTECTION OF ADJACENT OCCUPANCIES 12-23.1 Wall and Ceiling Construction. No employer shall suffer or permit flammable liquids to be used or dispensed in any room above or below or adjoining one in which there is an employee occupancy unless either: 1. The room is part of a building which is a fireproof building or a fire-resisting building complying with Industrial Code Rule No. 7, or 2. The walls and ceiling of the room within 20 feet horizontally of the working area are so constructed as to have_ a fire-resistance rating of at least one hour in accordance with Industrial Code Rule No. 7 and, if there be an employee occupancy below such room,_ the floor of the room within such distance is of incombustible material and is water proof, or t 3. Such room is equipped with automatic sprinkler protection con forming to Industrial Code Rule No. 20. 12-28.2 W all Openings. Wall openings in every such room shall be provided with approved three-quarter hour self-closing fire doors or with approved three-quarter hour fire windows. No such room shall have any window openings beneath or within ten feet horizontally ot any fire escape or required exterior stairway. 12-24 SPECIFIC OPERATIONS AND SPECIFIC CONTROL REQUIREMENTS 12-24.1 Grinding and Polishing Wheels, etc. Grinding, polishing, buffing, scratch brushing, abrasive cutting-off wheel and grinding or polishing belt strap operations generating dangerous air contaminants shall be provided with local exhaust ventilation and an air cleaning device. Exceptions: 1. Wet grinding with other than sandstone wheels _and wet polishing and buffing operations if enclosures are provided which prevent splash or dispersion of liquids, abrasive compounds or mists into the workroom. 2. Intricate and precision grinding discs or wheels not over one inch in diameter. 3. Grinding or polishing of articles and instruments made of gold and platinum. 4. Intermittent tool grinding operations used for shop purposes only. 12-24.2 Woodworking Machines. Woodworking operations generat ing dangerous air contaminants shall be provided with local exhaust ventilation and an air cleaning device. ' 12-24 3 Melting Apparatus. Vessels operated at or in excess of the temperature of volatilization of toxic metals, alloys or compounds which generate dangerous air contaminants shall be provided with local ex haust ventilation. Vessels used for melting oncleaning suchJ"e**k* alloys or compounds shall be provided with exhaust ventilation whe operated in such a manner as to generate dangerous air contaminante. The combustion chamber, when operated m such a manner as to release i dangerous air contaminants, shall be provided with local exhaust ventilation. 17 4 cD tj r, Exception; Portable receptacles or apparatus which have no fixed location ana aro used intermittently and which produce no dangerous air contaminants, 12-24.4 Open Surface Tank Operations. 12-24.4.1 Open surface tank operations. Open surface tank opera tions creating dangerous air contaminants shall be provided with venti lation to control such contaminants. (See Industrial Code Rule No. 18.) ^ ~ f 4]i4'2 i. Classes of operations. Open surface tank operations are classified into groups m accordance with both hazard potential and rate Rule No" l8 ant re ea3e as set forth in Arfcicle 18-14 of Industrial Code ,, if2"2*'f:8 Humidity control. When heat is added to the workroom to prevent the condensation of water vapor evaporated from open tanks into mist, such additional heat shall be so controlled that it does not raise the wet bulb temperature in the lower six feet of the workroom AD0V6 80 JjV 12-24.4.4 Cleanout doors. Tanks or machines used for cleaning by solvents and having a surface vapor area of more than two square feet shall be equipped with suitable cleanout or sludge doors located near the bottom of each tank or still. Such doors shall be constructed and maintained so that there is no leakage of solvent when closed. 12-24.4.5 Solvent transfer. 1. Transfer of flammable solvents from containers shall be by means or a hose or pipe leading to the bottom of the tank being filled. Con tainers between which the transfer is being made shall be electrically bonded and grounded with a resistance of less than 25 ohms. vessels0^ * 6 so^ven^s sbaN be stored or transferred in uncovered 12-24.4.6 Vapor phase degreasing. w 4'4;,6 1 F i ? eb? ar,d\ The level of th e vapors shall be k ep t below tank width or 36 inc-hieasn,kw&hic?hedvlesrtaisncleesse.w a l to a t least one-half the 12-24.4.6.2 Heating, , Is used as fuel for heating, the combustion cham ber shall be of tight construction, except for necessary combustion and flue openings. Mechanically ventilated flues shall be independent of the exhaust duct Natural draft flues shall be provided with draft diverters. Ail flues shall be constructed of corrosion-resistant material. 2. Electric. Electric heating units shall be constructed of materials resistant to the tank contents and shall be constructed and installed so as to prevent hot spots. 12-24.4.6.8 Thermostatic control. Every tank shall be provided w ith two thermostats, one of which shall be connected to control or shut off * heat when the contents reach a temperature not higher Iw i \ " i excef * ot f t 6 b0llm2 Pomt of the solvent in its uncon- tammated state and the other of which shall be located above the vapor ture m the zone of thet2tvh.sehrumtos?ta,ttbise a8t0Uthrceeboofilhinegatpwoihnetnotfhtehetesmolpveernat. 18 12-24.4.6.4 Condensers. Tanks shall he equipped w ith condensing or cooling surfaces consisting of pipes, coils, water jackets or any com bination thereof located on at least two sides in the upper portion of the tank above the solvent liquid level. Water, refrigerant or other cooling media shall be circulated through the condenser whenever the tank is in operation. 12-24.4.7 Operation. 1. Where tanks are provided with loading hoists, the hoists shall be designed to raise and lower the work at a speed not greater than 11 feet per minute. 2. All products after immersion in solvents shall be held in the vapor zone of the tank and shall not be withdrawn from the tank until the product reaches the vapor temperature as evidenced by the stopping of vapor condensation on the product. 3. Loading racks shall be of metal or equally impervious material. 4. The horizontal cross section area of product or rack shall not be greater than 2 /8 of the horizontal cross section area of the tank. 12-24.4.8 Cleaning of tanks. 1. Before cleaning the interior of any tank, the contents shall be drained off and the cleanout doors, if any, shall be opened. All pockets in tanks or pits where vapors may collect shall be ventilated and cleared. 2. Every worker engaged in cleaning the interior of any tank in which dangerous air contaminants are present shall be provided with an ap proved air line respirator or mask unless the work atmosphere is cleared of dangerous air contaminants by mechanical ventilation. A stand-by worker trained to render immediate assistance in an emergency shall be provided during the cleaning operation. 3. Floors and platforms around tanks shall be maintained in accord ance with Industrial Code Buie No. 16. 12-24.4.9 Welding, open flame etc. No work involving welding, open flame or other sources of ignition shall be done at or about any equip ment for open surface tank operations unless such equipment has first been thoroughly cleaned of all flammable or volatile solvents and their vapors or is protected by distance or by shielding against accidental ignition or heating from such work. 12-24.4.10 Special precautions for cyanide. 1. Where rinse, acid and cyanide tanks are so installed and used that any of them may be contaminated with cyanide or acid, such tanks shall be provided with local exhaust ventilation.2 2. Cyanide t anVa shall not be provided with drains or overflows which will allow the tank contents to mix with liquid drained from other tanks either on the floor or in floor drains unless the cyanide drainage has been properly neutralized. 8. Cyanide salts shall be stored in a locked enclosure and set above the level of any floor on which acid carboys are stored. 19 |v i Si i 12-24.5 Tumbling Processes. 12-24.6.1 General provisions. Tumbling processes creating danger ous air contaminants shall be provided with means to remove or control such contaminants at the point of generation. Exception: The above does not apply to m ills, drums, cages or bar rels which are completely enclosed during rotation and disseminate air A . contaminants only when being charged or discharged. Means Bhall be * * provided to control such contaminants. 12-24.6 Abrasive Blasting Operations. . 12-24.6.1 General provisions. Abrasive blasting operations creat ing dangerous air contaminants shall be enclosed as completely as practicable and shall be provided with a local exhaust system to remove the air contaminants. Exception: Outdoor abrasive cleaning operations where the opera tor is furnished with and wears an approved air line respirator. 12-24.6.2 Operation. Approved air respiratory protective equipment of the supplied air type shall be used by workers employed in abrasive blasting rooms or tunnels. 12-24.6.3 Air supply. Air furnished to air line respiratory equip ment shall be clean. 12-24.7 Crushing, Milling, Screening, Mixing and Conveying. 12-24.7.1 General provisions. Crushing, milling, screening, mixing and conveying and related processes creating dangerous air contami nants shall be enclosed and provided with local exhaust ventilation to remove or control the air contaminants at the point of generation. 12-24.8 Welding, Brazing, Flame Cutting and Metallizing. 12-24.8.1 General requirements. Welding, brazing, flame cutting and metallizing operations creating dangerous air contaminants shall be provided with ventilation to control such contaminants. 12-24.8.2 Classes of operations. Operations involving welding, etc., are divided into the following classes for the purposes of this rule: . Class I-- Operations in confined spaces involving toxic metals includ ing but not limited to antimony, beryllium, cadmium, lead, mercury, selenium or tellurium, or involving fluorine or any alloy, compound or flux containing any one or combination thereof or other dangerous air contaminants. Class II--Operations in confined spaces involving metals, alloys or compounds other than those listed in Class I. Class III-- Operations in unconfined spaces involving metals, alloys or compounds listed in Class I. Class IV--Operations in unconfined spaces involving metals, alloys or compounds other than those listed in Class I. 20 12-24.8.3 Protection o f operators. Class I Requirements, Every employee required to work within a con fined space where any Class I operation is performed shall be furnished an approved air line respirator or supplied air helmet, and the confined space shall be ventilated a t a minimum rate of 1000 c.f.m. per welder within the enclosure. Class II Requirements. Every employee required to work within a con fined space where any Class II operation is performed shall be furnished an approved air line respirator or supplied air helmet, or the confined space shall be ventilated at a minimum rate of 1000 c.f.m. per welder within the enclosure. Class III Requirements. Every Class III operation shall be provided with local exhaust ventilation. Class IV Requirements. Every Class IV operation at a fixed location as part of a production process shall be provided with local exhaust ventilation where practicable. All other Class IV operations shall be provided with dilution ventilation. Exceptions: The follow ing Class IV operations are excepted from the above requirements : 1. Spot welding. 2. Operations which are not usual shop practice. 3. Out-of-door operations. 12-24.9 Exhaust G ases From Motor Vehicles Operating in En closed Areas. 12-24.9.1 General provisions. Enclosed areas in which internal com bustion motor vehicles are operated and release dangerous air contami nants shall be provided with means to remove or control the tumes, gases or vapors released or disseminated. 12-25 INDUSTRIAL PRODUCTS COATING 12-25.1 Where Performed. Coating shall be conducted in a v e n t ilated hood, booth or enclosure complying with this rule and Article 20 of Industrial Code Rule No. 18. 12-25.2 Heating. U n its used for comfort-heating any space to which this rule applies in which flammable liquids are used, handled or stored shall be confined to the use of low pressure steam or hot water or indi rect forced warm air. Direct warm air heating systems may be used subjecTto approval by th e Board. Heating units shall be kept free of deposits of flammable compounds. 12-25.3 Drainage of Flammable Liquid Waste. Every drainage sys tem which conducts flammable liquid wastes shall be provided with traps. Flammable liquid wastes shall be prevented from entering the plant drainage system. 12-25.4 Maintenance and Operation. 19_p>5i i M aintenance of equipment. All equipment required by this rule shaU be maintained in good repair and proper operating condition. 21 \ % f; 12~25.4.2 Purging. Exhaust systems shall continue in operation for a sufficient period of tim e after conclusion of coating operations to clear the air of dangerous air contaminants. . 1.2725.4.3 _Floor maintenance. The floor within and in the immediate vicinity of the working area shall be kept clean and clear of any waste material or any obstruction. Where dust may be created by dry sweep ing, floors shall be wet down with a non-flammable wetting agent before sweeping. 12-25.4.4 Passage space. A minimum passage space of three feet snail be provided for access to every working station. 12-25.4.5 Containers. All tanks and containers used for flammable liquids shall be of incombustible material and shall be kept closed whether full or empty, except as may be necessary for operational purposes. .. 1?T2^ 4,6. Transfer of flammable liquids. The transfer of flammable liquids having a flash point of less than 100 degrees F. shall be by means of a hose or pipe leading to the bottom of the vessel being filled. When transferring such liquids from one metal container to any other metal container, the two containers shall be bonded together electrically and be properly grounded. 12-25.4.7 Vehicles. Vehicles shall not be taken into or out of spray coating spaces under their own power, unless the exhaust system is operating. 12- 25.4.8 Use of different types of coating materials. Where dif ferent types of coating materials are used in the same booth or space, the booth or space shall be thoroughly cleaned of previous coating de posits before commencing the application of the new substance. 13- 25.4.9 Mixing and thinning. The mixing or thinning of flam mable liquids, when done indoors, shall be done in a hood, booth or similar enclosure provided with ventilation as specified in Article 20 of Industrial Code Rule No. 18. 12-25.4.10 Coating removal by use of solvents. The process shall be provided with adequate exhaust ventilation while the removal of residue pamt or other coating material is being carried on. The rate of ventila tion shall be that specified in Industrial Code Rule No. 18. Note: Use of benzene or carbon tetrachloride for this operation is prohibited. 12-25.4.11 Sanding. Sanding of surfaces containing lead or Ieac pigment shall be done either with sandpaper wetted with water or in ar area provided with an exhaust system providing ventilation at a mini mum rate of 150 f.p.m. m the breathing zone of the worker. 12-25.4.12 Cleaning solvents. Flammable liquids used for cleanini permanent surfaces other than floors in a working space shall have degrees F. Use of benzene for this operation is prohibited. No flammable liquids shall be used to clean floors. . I 2"25; 4:13,, Cleaning of hoods and booths. Exhaust fans and the in. terior of hoods, booths and ducts shall be maintained free of accumula. tions of coating material. 22 f ti 12-25.4.14 Lining o f spray booths. Material for lining of spray Ii booths or hoods, i f used, shall cover the inner sides of the booth or hood without overhanging and shall be maintained in contact with the it walls of the booth or hood. Loose sections shall be removed or shall be Ii reapplied to the wall surface. 12-25.5 Tanks, Troughs and Mechanical Application. 12-25.5.1 Enclosed operations. Enclosed coating or solvent cleaning operations and any subsequent drying operations shall be mechanically ventilated to maintain the concentration of vapors within the enclosure below 25 percent of the lower explosive level. Necessary work openings of such enclosures shall have an inward air flow maintained by me chanical ventilation. 12-25.5.2 Eire protection. Tanks and troughs containing flammable liquids used for manual dipping operations shall be provided with heatactuated automatically closing covers arranged so as not to interfere with exhaust ventilation. Where the dipping operation is done aiomatically the tank and troughs shall be provided with approved fire extinguishing systems. Note: Eor additional requirements on fire protection, see Article 12-26. 12-25.5.8 Installation of tanks. Tanks shall he arranged to prevent accidental tipping. 12-25.5.4 H eating of liquids. Devices used for heating flammable liquids shall be provided with an automatic temperature regulating device so arranged th at the source of heat shall be automatically shut oil when the temperature of the liquid rises above the normal operating temperature. 12-25.6 Forced Drying and Baking. 12-25.6.1 Construction. Ovens, cabinets, other enclosures and duct work used for forced drying or baking systems shall be constructed of incombustible material with expansion joints provided ^ the oven framing. Duct work shall be provided w ith two inches clearance or three-fourths inch of incombustible rigid insulation where the duct work passes through combustible walls, floors or roofs. The tempera ture of surfaces in contact with walls, floors or roofs shall not exceed 160 degrees F. The floor surface of the oven shall he of incombustible material and extend at least one foot beyond the oven outline. Interior surfaces shall be smooth. 12-25.6,2 V entilation. Ovens, cabinets and other enclosures used for such purpose shall be provided w ith mechanical ventilation to main ta in th e concentration of flammable vapors below 25 percent of the lower explosive level a t all times. Ovens shall be exhausted mechanically so th a t an inw ard a ir flow shall he m aintained through all openings to prevent escape of dangerous air contaminants. The fans of such exhaust ventilating and any recirculating systems shall he interlocked to the h eat supply by m eans of approved a ir flow switches, so th a t th e neat supply shall be cut off unless the fa n m aintains th e required a ir flow. Conveyors shall be interlocked with the oven exhaust and any recircu lating -fans so th a t th e conveyors cannot operate unless such fa n s are operating. 23 I per5on.s are squired to enter the drying enclosure, the con- IpuJi v,; i ai? contaminants shall be maintained below the danger level by mechanical ventilation. 8 vtrkM ^a^ Explosion vents. Ovens located inside buildings and in exceedfn ^ an iv /.w r| c?mbuatibl,e g?ses may be Present in amounts a S S r S W * the lower explosive level shall be equipped with hS u U8,10 r?h?ve mternal explosion pressures. Such vents +!re ail nnobstructed aggregate area of one square foot of panel 15 feet oi oven volume, allowance being made sSre STM a?d, f 0?Js arra?2ed to yield easily to internal pres- f 8 lf Practicable, be located in the top of the .al?d he made of material other than glass, which shall yield triW p!? ,mterna! Pressure. On long ovens, relief panels shall be dis- TM tad t Provide effective explosion relief. Relief panels shall be . a 1 arran&d B0, as not to create a hazard to employees or to sPaces. Panel edges shall be maintained free of condensate ana other solid material to insure proper operation. V i l l t t w w 1101?' ,Fan switches shall be interlocked with the fuel before th^Jnp.f , rane ement to assure proper preventilation 4 ignited. Where necessary, enclosure doors shall have L ^ iM Wltch,mterl ck to Prevent the time delay relay from operating unless the enclosure doors are open. e\ suppl7 Ml!e sha11 he Provided with a pressure switch to shut s i i T suPP]y when fuel supply pressure is insufficient. The switch shall not reopen the fuel valve automatically. An excess temperature limit switch shall be provided to cut off the - ,supply when oven temperature exceeds the safe limit. The switch shall not reopen the fuel valve automatically. Combustion safeguards shall be provided to shut off the fuel supply in the event of pilot light or ignition failure. P y Dampers. Air supply or exhaust volume control dampers to preventJfunedosrureer y *" * flxed securely< DamPera shall be designed , J-2'"25.6.6 Combination booths. Where coating and forced drying are ^ r i K i & S S d 8S b00th or enclosure- the followinK re^ ire- a' During coating operations, the drying apparatus and electrical connections and wiring thereto shall not be located within the coating thereo-n^and1"^ &ny ocatlon where coating residue may be deposited b. Coating apparatus, drying apparatus and ventilating system of the coating enclosure shall be equipped with suitable approved interlocks so arranged that coating apparatus cannot be operated while drying apparatus is inside the coating enclosure and the coating enclosure shall be purged of coating vapors for a period of not less than three minutes before drying apparatus can be energized; the ventilating sys tem shall continue m operation during the drying process and in the event of failure of the ventilating system, the drying apparatus shall shut off automatically. 12-25.6.7 Cleaning. The inside surfaces of the drying enclosure shall be maintained clean. Cleaning tools shall be of non-ferrous material. 24 12-25.7 Storage. 12-25.7.1 E nclosure of storage rooms. The floor surface of rooms used for storage of flammable liquids shall be of incombustible material and shall be 'waterproof. The room enclosure shall be of construction haying th e follow ing minimum fire-resistive rating: Walls Doors Windows Ceiling ( if space above is occupied) Floor 1 hour % hour % hour 1 hour 1 hour (For rules on fire-resistive construction see Industrial Code Rule No. 7.) 12-25.7.2 Location of storage rooms. Storage rooms for flammable liquids sh all be located at or above grade and an exterior wall of the building shall form at least one wall of the room. No opening in any storage room shall be located within 15 feet of any stairway, elevator shaft or building exit. 12-25.7.3 Floor drainage and door sills. Floors of storage rooms shall be arranged to provide drainage of liquids and the drain shall be provided w ith a trap to prevent the spread of fire. Sills of non combustible material at least six inches high or a six inch deep gutter covered w ith grating shall be provided at every door leading into a storage room. Note: See Section 12-25.3 for drainage requirements. 12-25.7.4 Lim itation of quantities. No more than one day's supply or 220 gallons of flammable liquid, whichever is less, shall be kept in a workroom. Such supply, unless kept in closed drums, shall be kept in cabinets as follow s: a. Cabinets for storing quantities of flammable liquid not exceeding 110 gallons shall be of at least incombustible single wall construction and shall be vented to the outer air. b. Cabinets for storing quantities of flammable liquid of more than 110 gallons but less than 220 gallons shall be of incombustible double wall construction w ith an air space of at least 1Ms inches or metalcovered wood construction throughout and shall be vented to the outer air at top and bottom. c. Quantities exceeding 220 gallons shall be kept in a storage room as specified in Subsections 12-25.7.1, 12-25.7.2 and 12-25.7.3. Doors to storage cabinets shall be kept closed and latched. 12-25.7.5 Container covers. Containers used for flammable or toxic liquids, whether or not they contain such material, shall be kept tightly covered when not in use or when being moved about. 12-25.7.6 V entilation. Storage rooms shall be provided with a mini mum rate of ventilation of 5 cubic feet per minute per square foot of gross floor area and the ventilation shall be maintained during transfer from one container to another. Where mixing and thinning operations are performed, the rate of ventilation shall conform to the requirements o f A rticle 20 of Industrial Code Rule No. 18. 25 12-25.8 Electrical Equipment. 12-25.8.1 Wiring and equipment. All electric wiring and electric equipment shall be of good quality and be properly installed. Wiring o f a working area or within a storage room shall be installed m sealed rigid metal conduit with explosion-proof fittings. Exception: Coating operations not involving flammable solvents. ligh tin g. Artificial lighting shall be by electricity. Lamps within areas where flammable liquids may be used or stored or where flammable vapors may be present shall be o f the totally enclosed type ana shall be protected against breakage either by location or by lamp guards. Lamp sockets shall be non-metallic shells and of the switchless type. Illumination of hazardous areas through panels of transparent material is permitted only under the following conditions: 1. Fixed lighting units shall be used as the source of illumination. . PaneJ shall effectively isolate the hazardous area from the area m which the lighting unit is located. 9' ?The transparent panel shall conform to Section 18-20.1 of Code Buie No. 18. 4. The installation shall be such that the normal accumulation of hazardous residue on the exposed surface of the panel will not be raised to a dangerous temperature by heat radiation or conduction from the source of illumination. 12-25.8.8 Control equipment. Switches and other control devices, unless explosion-proof, shall be located at least 10 feet from the work ing area and outside of storage rooms, 12-25.8.4 Other equipment. All electrical equipment located in a storage room or the interior of coating hoods or their exhaust ducts shall be explosion-proof. Systems designed to salvage deposits by collectmg them m flammable solvent shall have the controls so arranged that the solvent pump cannot operate unless the ventilating fan is operating. 12-25.8.5 Grounding o f equipment. All mechanical equipment used for the application of flammable liquid and all metal booths, hoods, tanks, troughs, conveyors, fans and motor housings and all belts w ithin a working area shall be grounded effectively, 12-25.9 Electrostatic Apparatus. 12-26.9.1 Installation and use. The installation and use of electro static apparatus shall comply with other applicable provisions of this rule and with the following requirements : shaltbe usedAPPr Val required' 0n ly aPProved electrostatic apparatus 12-25.9.3 Conductive coatings. This method shall not be used for spraying conductive coatings. 12-25.9.4 Hand operations. Manually operated spray guns or atomizers shall not be used in an electrostatic field. 26 I 12-25.9.6 Location. E lectrostatic apparatus and devices used in con nection with paint spraying, dipping or other coating operations shall have transformers and power packs located outside spray booths or enclosures and areas subject to paint deposit. 12-25.9.6 Supports. Electrodes and electrostatic atomizing heads shall be rigidly supported and permanently installed and shall be effec tively insulated from ground. 12-25.9.7 Clearance. Space of at least twice the sparking distance shall be maintained between articles being finished and electrodes, elec trostatic atomizing heads or conductors. 12-25.9.8 Articles on conveyors. Articles on conveyors shall be so arranged and supported as to maintain the required clearances. 12-26.9.9 Automatic controls. Electrostatic apparatus^ shall be equipped with automatic controls arranged to make the entire equip ment dead if the ventilation of the spraying or drying area falls below a velocity of 100 feet per minute, or if an article on the conveyor projects into the required clearance, or i f the conveyor stops. 12-25.9.10 Guarding and isolation of process. The electrical field and all parts o f the equipment carrying high potential shall be located, guarded and fenced off to provide safe isolation of the process. Guards and fences shall be of conducting material and shall be grounded. 12-25.9.11 Signs. A suitable sign stating the sparking distance shall be posted conspicuously near the assembly. Signs designating the process zone as dangerous by reason of fire and accident hazard shall be posted. 12-25.9.12 Insulators. Insulators shall meet the test standards of the Board for insulators for the potential used and shall be maintained clean and dry. Note: The standards adopted by the Board relating to the test requirements o f insulators are basically identical with the test require ments set forth in C-29.1-- September 1944 of the American Institute of Electrical Engineers. 12-26 FIRE FIGHTING EQUIPMENT 12-26.1 Automatic Sprinklers. An automatic sprinkler system with sufficient heads or outlets shall be provided in all working areas of build ings two stories or more in height where flammable coating liquids are applied or stored. Note: For sprinkler system requirements see Industrial Code Rule No. 20. 12-26.2 Automatic Extinguishers. Dip tanks, drain boards, drip pans and drip troughs involving the use of flammable liquids shall be provided with approved automatic fire extinguishers except: a. Those used in electrostatic finishing. b. Hand dipping tanks which with their associated drain boards, drip pans and drip troughs have a vapor surface area not greater than 16 square feet. 27 r lfppH^Big 12-27 EVIDENCE OF DANGEROUS AIR CONTAMINANTS e f f a s 0! m atter of soSnd d i S l judgment?11 ** " 28 A. GASES AND VAPORS Substance Ports per Million Acetaldehyde 200 Acetic acid 10 Acetic anhydride 6 Acetone 1000 Acetylene-tetrabromide 1 Acrolein 0.5 Acrylonitrile 20 Allyl alcohol 5 Allyl chloride 6 Allyl propyl disulfide 2 Ammonia 100 Amyl acetate 200 Amyi alcohol (isoamyl alcohol) 100 Aniline 5 Arsine 0.05 Benzene (benzol) 25 Benzyl chloride 1 Bromine 0.1 Butadiene 1000 Butanone (methyl ethyl ketone) 250 Butyl acetate 200 Butyl alcohol 100 Butyl amine 5 Butyl cellosolve 50 Carbon dioxide 5000 Carbon disulfide 20 Carbon monoxide 100 Carbon tetrachloride 25 Cellosolve . 200 Cellosolve acetate 100 Chlorine 1 Chlorine trifluoride 0.1 Chlorobenzene (mono- chlorobenzene) 75 Chloroform (trichloromethane) 60 1-Chloro-l-nitropropane 20 Chloropicrin 0.1 Chloroprene 25 Cresol (all isomers) 5 Cyclohexane 400 Cyclohexanol 100 Cyclohexanone 100 Cyclohexene 400 Cyclopropane 400 Decaborane 0.05 Diacetone alcohol 50 Diborane 0.1 o-Dichl orobenzene 50 Dichlorodifluoromethane 1000 Substance 1. 1- Dichloroethane 1 .2- Dichloroethane 1 .2- Dichloroethylene Dichloroethyl ewer Dichloromonofluoromethane 1 ,1-Dichloro-l-nitroethane Dichlorotetrafluoroethane Diethylamine Difiuorodibromomethane Diisobutyl ketone Dimethylaniline Dimethylsulfate Dioxane (diethylene dioxide) Parts per Million 100 100 200 15 1000 10 1000 25 100 50 5 1 100 Ethyl acetate 400 Ethyl acrylate 25 Ethyl alcohol (ethanol) 1000 Ethylamine 25 Ethyl benzene 200 Ethyl bromide 200 Ethyl chloride 1000 Ethyl ether 400 Ethyl formate 100 Ethyl silicate 100 Ethylene chlorohydrin 5 Ethylene diamine 10 Ethylene dibromide 25 Ethylene imine 5 Ethylene oxide 50 Fluorine 0.1 Fluorotrichloromethane 1000 Formaldehyde 6 Furfural 5 Furfural alcohol 50 Gasoline 600 Heptane 600 Hexane 500 Hexanone 100 Hexone 100 Hydrazine 1 Hydrogen bromide 6 Hydrogen chloride 6 Hydrogen cyanide 10 Hydrogen fluoride 3 Hydrogen peroxide (90%) 1 Hydrogen selenide 0.05 Hydrogen sulfide 20 Iodine 1 Isophorone 25 Isopropylamine 5 Substance Parts per Mlion Mesityl oxide 25 Methyl acetate 200 Methyl acetylene 1000 Methyl acrylate 10 Methyl alcohol 200 Methyl bromide 20 Methyl cellosolve 25 Methyl cellosolve acetate 25 Methyl chloride 100 Methyl chloroform 500 Methyl formate 100 Methyl isobutyl carbinol (methyl amyl alcohol) 25 alpha-Methyl styrene 100 Methylal (dimethoxymethane) 1000 Methylcyclohexane 500 Methylcydohexanol 100 Methylcyclohexanone 100 Methylene chloride 500 Monomethyl aniline 2 Naphtha (coal tar) Naphtha (petroleum) Nickel carbonyl Nitric acid p-Nitroaniline Nitrobenzene Nitroethane Nitrogen dioxide Nitroglycerin Nitromethane 2-Nitropropane Nitrotoluene 200 500 0.001 io l 1 lOO 6 0.5 ioo 50 5 Octane 500 Ozone 0.1 Paradichlorobenzene 75 Pentane 1000 Pentanone 200 Perchloroethylene 200 Phenol 5 Substance Parts per Mlion Phenylhydrazine 5 Phosgene (carbonyl chloride) 1 Phosphine 0.05 Phosphorus trichloride 0.5 Propyl acetate Z00 Propyl alcohol (isopropyl alcohol) 400 Propyl ether (isopropyl ether) 500 Propylene dichloride 75 Propylene imine 25 Propylene oxide 100 Pyridine 10 Quinone 0.1 Stibine Stoddard solvent Styrene monomer (phenylethylene) Sulfur dioxide Sulfur hexafluoride Sulfur monochloride Sulfur pentafluoride 0.1 500 100 5 1000 1 0.025 Tertiary butyl alcohol 100 p-Tertiarybutyltoluene 10 1, 1, 2, 2-Tetrachloroethane 5 Tetrahydrofuran 200 Tetranitromethane 1 Toluene 200 o-Toluidine 5 Tolylene 2, 4-diisocyanate 0.1 Trichloroethylene 200 Triethylamine 25 Trifluoromonobromomethane 1000 Turpentine 100 Vinyl chloride (chloroethylene) 500 Vinyl toluene 100 Xylene 200 Xylidine 5 30 B. TOXIC DUSTS, FUMES AND MISTS Substance Milligrams per Cubic Meter Aldrin 0.25 Animate 15 Antimony 0.6 ANTU (alpha-naphthyl- thiourea) 0.3 Arsenic 0.5 Barium (soluble compounds) 0.5 Beryllium 0.002 Cadmium (oxide fume) 0.1 Calcium arsenate 0.1 Chlordane 2 Chlorinated camphene (60%) 0.5 Chlorinated diphenyl oxide 0.5 Chlorodiphenyl (42% chlorine) 1 Chlorodiphenyl (54% chlorine) 0.5 Chromic acid and chromates as CrOs 0.1 Crag Herbicide 15 Cyanide a s CN 5 2 ,4-D (2, 4-Dichloro- phenoxyacetic acid ) 10 DDT (2, 2-bis- (p-chlorophenyl-1, 1, 1-trichlor- ethane) 1 Dieldrin 0.25 Dinitrobenzene 1 Dinitro-o-cresol 0.2 Dinitrotoluene 1.5 E PN (O eth y l o-p-nitrophenyl thiono benzene-phosphonate) 0.5 Ferbam (fe rric dimethyl dithiocarbamate) 15 Ferrovanadium dust 1 Fluoride 2.5 Hydroquinone 2 Iron oxide fum e 15 Lead 0.2 Lead arsenate 0.15 Lindane 0.5 Magnesium oxide fume 15 M alathion 15 Manganese 6 Mercury 0.1 Substance Milligrams per Cubic Meter Mercury (organic compounds) 0.01 Methoxychlor 16 Molybdenum (soluble compounds) 5 Molybdenum (insoluble compounds) 15 Nicotine 0.5 Farathion 0.1 Pentachloronaphthalene 0.5 Pentachlorophenol 0,5 Phosphorus (yellow) 0.1 Phosphorus pentachloride 1 Phosphorus pentasulfide 1 Picric acid 0.1 Pyrethrum 2 Rotenone 5 Selenium compounds (as Se) 0.1 Sodium fluoroacetate (1080) 0.1 Sodium hydroxide 2 Strychnine 0.15 Sulfuric acid 1 TBDP (tetra ethyl dithiono pyrophosphate) 0.2 Tellurium 0.1 TEPP (tetraethyl pyrophosphate) 0.05 Tetryl (2,4, 6-trinitro- phenylmethylnitramine) 1.5 Thallium (soluble compounds) 0.1 Thiram (tetramethyl thiuram disulfide) 5 Titanium dioxide 15 Trichloronaphthalene 5 Trinitrotoluene 1.5 Uranium (soluble compounds) 0.05 Uranium (insoluble compounds) 0.25 Vanadium (V2O5 dust) 0.5 Vanadium (VaOjiume) 0.1 Warfarin (8-[alpha acetonylbenzyl]-4-hydroxycumarin) 0.5 Zinc oxide fume 15 Zirconium (as Zr ) 5 81 C. MINERAL DUSTS Substance Million Particles per Cubic Foot* Aluminum oxide 50 Asbestos 5 Dust (nuisance, no free silica) 50 Mica (below 6% free Si02) 20 Portland Cement 50 Silica: Class I (below 6% free SiOi) 50 Class II (6% to 50% free SiOa) 20 Class III (above 50% free SiOj) 6 Substance Million Particles per Cubic Foot* Silicon carbide 50 Slate (below 5% free S1O2) 50 Soapstone (below 5% free Si02) 20 Talc 20 Total dust (below 5% free SiOa) 50 * Notes Using the light Held low-power method of counting as described in the U. S. Public Health Report 47 No. 12, March 18, 1982. pp. 669-672 or its equivalent, and a standard type impinger or other equivalent instrument for taking atmospheric dust samples. 12-28 APPROVED DEVICES OR MATERIALS Any device or material which the Board has approved pursuant to Section 27-a of the Labor Law for use in complying with this rule may be so used as if by this rule specifically authorized, any general or special provision of this rule notwithstanding. 12-29 SEVERABILITY I f any provision of this rule or the application thereof to any person or circumstance is held invalid, such invalidity shall not affect other provisions or applications of this rule which can be given effect without the invalid provision or application and to this end the provisions of this rule are declared to be severable. 32