Joining of materials other than by welding

(a)For purposes of this section, "Mechanical Fitting" means a stab type fitting, nut follower type fitting, bolted type fitting, not including a flange, or other compression type fitting.#

(b)All Mechanical Fittings shall provide a seal and additional Pipe restraint on all sides of the fitting.#

(c)Mechanical Fittings shall not be located inside a building.#

(d)Procedures for each joining method shall include:#

(1)instructions to review the manufacturer's markings on Pipe, valves and fittings to ensure they are correctly sized and meet all requirements for use in the Transportation Of Gas;#

(2)preparation requirements such as cleaning, heating, scraping, and marking of the Pipe that have an impact on the integrity of the joint;#

(3)assembly instructions, such as sequence of operations, positioning of parts, clearances and tools required; and#

(4)joining specifications such as torque, hydraulic pressure, engagement, cooling and rough handle times, stab depths, and temperatures.#

(e)Procedures for threaded joints shall include:#

(1)threaded surfaces shall be cleaned and inspected for any condition that would affect the integrity of the joint;#

(2)threads exhibiting any condition that would affect the integrity of the joint shall not be used;#

(3)the two ends to be joined shall be properly aligned;#

(4)the joint shall be tightened using appropriate tools to produce a gastight joint; and 13#

(5)care shall be used to protect the adjacent Piping from damage that impairs the serviceability of the Piping while tightening or loosening a threaded joint.#

(f)Any joint found not in compliance during the inspection required by 49 CFR 192.273(c), as amended from time to time, shall be repaired or removed prior to being Placed In Service, unless such joint is already in service, at which time it shall be repaired or removed as soon as practicable.#