2006 New York Code - Compressing.

 
    §  27-4100 Compressing. a. Capacity. It shall be unlawful to store for
  sale any gas compressed to a pressure greater than  six  pounds  to  the
  square inch, without a permit, except the following:
    1. Nitrous oxide or oxygen for use for medical or surgical purposes in
  quantities  not  exceeding a total container capacity of five cubic feet
  for both gases, and in containers none of which shall  have  a  capacity
  exceeding two and one-half cubic feet;
    2.  Combustible  gases  under  pressure  exceeding  fifteen pounds per
  square inch, such as Blaugas and acetylene, in quantities not  exceeding
  five  hundred  cubic  feet  gas  measure and in containers none of which
  shall have a capacity exceeding two and one-half cubic feet;
    3. Non-combustible liquefied gases, except chlorine, in quantities not
  exceeding  a  total  container  capacity  of  one  cubic  foot,  and  in
  containers  none  of  which  shall have a capacity exceeding two hundred
  cubic inches.
    It shall be unlawful to use or store for use within the city  any  gas
  compressed  to  a  pressure  greater than six pounds to the square inch,
  without a permit, except:
    4. Non-combustible, non-liquefied  gases,  such  as  atmospheric  air,
  oxygen,  carbon  dioxide,  nitrous  oxide,  compressed to a pressure not
  exceeding one hundred pounds to the square inch and  in  quantities  not
  exceeding a total container capacity of thirty cubic feet;
    5.  Non-combustible,  non-liquefied  gases,  such  as atmospheric air,
  oxygen, nitrous oxide, nitrogen, compressed to a pressure not  exceeding
  three  hundred pounds to the square inch and in quantities not exceeding
  a total container capacity of thirty cubic feet, and  in  containers  of
  which none shall have a capacity exceeding six cubic feet;
    6.  Non-combustible,  non-liquefied  gases,  such  as atmospheric air,
  oxygen or nitrogen, compressed to a  pressure  exceeding  three  hundred
  pounds  to  the  square  inch  and  in  quantities not exceeding a total
  container capacity of twenty cubic feet, and in containers none of which
  shall have a capacity exceeding two and one-half cubic feet;
    7. Combustible, non-liquefied, non-absorbed gases, such as hydrogen or
  illuminating gas, compressed to a pressure not exceeding  three  hundred
  pounds  to  the  square  inch,  and  in quantities not exceeding a total
  container capacity of thirty cubic feet, and in containers none of which
  shall have a capacity exceeding six cubic feet;
    8. Combustible, non-liquefied, non-absorbed gases, such as hydrogen or
  illuminating gas, compressed  to  a  pressure  exceeding  three  hundred
  pounds  to  the  square  inch  and  in  quantities not exceeding a total
  container capacity of ten cubic feet, and in containers  none  of  which
  shall have a capacity exceeding two and one-half cubic feet;
    9.  Soda  water  tanks  containing  carbonic  acid  under pressure not
  exceeding one hundred fifty pounds to the square inch, and in quantities
  not exceeding a total container capacity of twenty cubic  feet,  and  in
  containers none of which shall have a capacity exceeding two cubic feet;
    10. Absorbed acetylene, under pressure not exceeding two hundred fifty
  pounds  to  the  square  inch,  and  in quantities not exceeding a total
  container capacity of ten cubic feet, and in containers  none  of  which
  shall have a capacity exceeding two and one-half cubic feet;
    11.  Non-combustible  liquefied  gases, except ammonia, carbon dioxide
  and chlorine, such as nitrous oxide, carbonic acid or  sulphur  dioxide,
  in  quantities  not exceeding a total container capacity of twelve cubic
  feet, and in containers none of which shall have  a  capacity  exceeding
  one and one-half cubic feet;
    12.  Anhydrous liquid ammonia not exceeding a total container capacity
  of twelve cubic feet, and in containers  none  of  which  shall  have  a


  capacity  exceeding  five  and  one-half cubic feet, except as otherwise
  provided in these regulations;
    13.  Combustible,  liquefied gases, such as Blaugas, in quantities not
  exceeding a total  container  capacity  of  eight  cubic  feet,  and  in
  containers  none  of  which  shall  have  a  capacity  exceeding one and
  one-half cubic feet;
    14. Liquefied carbon dioxide in quantities not exceeding  a  total  of
  sixty gallons.
    b.  Certificate of fitness. No gas shall be compressed or generated to
  a pressure greater than fifteen pounds to the square inch, unless  under
  the supervision of a person holding a certificate of fitness.
    c.  Construction.  All tanks and cylinders used for the storage of gas
  under  pressure  shall  be   manufactured   in   compliance   with   the
  specifications  of  the  federal  department of transportation, shall be
  constructed of aluminum or of rolled, drawn or forged steel,  and  shall
  be either seamless, brazed, welded or riveted. Containers now in use and
  purchased  hereafter  for storing or transporting compressed gases, must
  be subjected, whenever they appear materially weakened by  use,  but  at
  least  once in five years, to a uniform interior pressure test, in which
  the test pressure must be as follows:
    1. For containers for liquid carbonic acid, liquid nitrous  oxide,  or
  Blaugas, three thousand pounds to the square inch;
    2.  For  containers  for  liquid anhydrous ammonia, not less than four
  hundred thirty pounds to the square inch;
    3. For containers for liquid chlorine,  not  less  than  four  hundred
  pounds to the square inch;
    4.  For  containers  for  liquid  sulphur  dioxide,  not less than two
  hundred fifty pounds to the square inch;
    5. For containers for carbonated beverages manufactured and placed  in
  use  after  the  first day of September, nineteen hundred seventeen, not
  less than five hundred pounds to the square inch;
    6.  For  containers  for  compressed  gases,  not  liquefied  and  not
  absorbed,  not  less than twice the charging pressure at seventy degrees
  Fahrenheit, unless  such  test  pressure  should  exceed  three  hundred
  pounds,  in  which case the test pressure shall be not less than one and
  two-thirds times the charging pressure at seventy degrees Fahrenheit.  A
  cylinder  must  be  condemned  when  it  leaks,  or  when  the permanent
  expansion exceeds ten percent of the total expansion. When the  charging
  pressure  is  less than three hundred pounds to the square inch, it will
  not be necessary to measure  the  permanent  expansion  in  quinquennial
  pressure  tests, provided the cylinder in question has previously passed
  this test.  All  containers  used  for  storage  and  transportation  of
  compressed  gases, under more than fifteen pounds pressure to the square
  inch, must be plainly stamped with  the  date  of  the  last  test;  for
  example,  "9-13"  for  September,  nineteen hundred thirteen. Containers
  that have not been tested and marked as prescribed herein  must  not  be
  charged or transported until properly tested and marked.
    d.  Containers;  certificate  of  approval.  It  shall  be unlawful to
  transport, store or sell any gas compressed to a pressure  greater  than
  fifteen  pounds to the square inch, unless it is contained in a steel or
  aluminum tank, cylinder or other metal container, of a type approved  by
  the commissioner, the federal department of transportation.
    e.  Pressure  gauge.  Containers,  used  for  the storage of gas under
  pressure of more than fifteen  pounds  to  the  square  inch,  shall  be
  provided  with  a  pressure gauge or with an opening to which such gauge
  may be  attached  for  determining  the  pressure  of  the  gas  in  the
  container.  No  container  exceeding twelve inches in length, to be used
  for the storage or transportation or use as a fuel in motor vehicles, of


  liquefied gases, flammable gases in solution or  other  flammable  gases
  under  a pressure of more than fifteen pounds per square inch at seventy
  degrees Fahrenheit, other than anhydrous ammonia or except in compliance
  with  regulations prescribed by the commissioner, shall be filled within
  the city; nor shall  any  filled  cylinder  containing  nonflammable  or
  flammable  liquefied  gases, nonflammable or flammable gases in solution
  or other nonflammable or flammable gases under a pressure of  more  than
  fifteen  pounds per square inch at seventy degrees Fahrenheit be brought
  into or filled in the city unless it be equipped with a safety device or
  fusible plug, of a type approved by  the  commissioner  or  the  federal
  department  of  transportation,  to  prevent the explosion of a normally
  charged cylinder when placed in a fire.
    f. Stamped. Each container, used for the storage or transportation  of
  gas  under  pressure,  shall have plainly and permanently marked thereon
  the name of the original purchaser or manufacturer, or a mark  by  which
  the  ownership or responsibility for filling the container can easily be
  established, and each container shall be identified by a serial  number.
  When  containers  are tested a complete record shall be kept thereof and
  this record, or a certified copy thereof, shall, upon reasonable  notice
  and  demand, be produced for the inspection of the federal department of
  transportation or the fire commissioner.
    g. Notwithstanding any other provision of this subchapter,  no  permit
  shall  be  required  (1) for the use of compressed natural gas as a fuel
  for generating motive power for a motor vehicle or (2) for  the  storage
  for such use in a container mounted on such vehicle.