NFPA 36-2001 Standard for Solvent Extraction Plants.
2.4.5 Upon completion of repairs or alterations, the plant shall be checked by the individual in responsible charge to ensure that operations can be resumed safely. (See Section 2.5.) 2.5 Extractor Start-up. Procedures for extractor start-up shall be established to minimize the hazard incident to passing through the flammable range. This shall be permitted to be accomplished by inerting to reduce the oxygen content. 2.6 Solvent Transfer Equipment. 2.6.1 Pumps shall be designed for the solvent, the working pres- sures, and the structural stresses to which they will be subjected. 2.6.2 Positive displacement pumps shall be provided with bypasses with pressure relief valves discharging back to the tank or to the pump suction. 2.6.3 The use of air pressure as the solvent transferring medium shall be prohibited. 2.6.4 Where practicable, all pumps handling solvent in the processing equipment shall be located on the first floor level. 2.6.5 Pump houses, if used, shall be of noncombustible con- struction and ventilated. 2.7 Piping, Valves, and Fittings. 2.7.1 General. All piping, valves, and fittings shall be designed for the working pressures and structural stresses to which they will be subjected. They shall be of steel or other material approved for the service intended. 2.7.2 Pipe Systems. Pipe systems shall be substantially sup- ported and protected against physical damage caused by expansion, contraction, and vibration.
2.9* Fire Protection. 2.9.1* An approved water spray, deluge or foam-water system, or a combination of these types of fixed protection systems shall be provided to protect the extraction process equipment and structure. 2.9.2* An approved system of automatic sprinklers shall be provided in the preparation area. 2.9.3* A system of yard hydrants shall be provided in accor- dance with accepted good practice. 2.9.4* Approved portable fire extinguishers of appropriate size and type shall be provided. 2.9.5* Where standpipe and hose protection is installed, combi- nation water fog and straight steam nozzles shall be provided. 2.9.6 Where explosion prevention systems are installed, they shall be installed in accordance with the provisions of NFPA 69, Standard on Explosion Prevention Systems. 2.9.7 Fire alarm signals shall be relayed or sent to a constantly supervised point on or off the premises. 2.9.8 Where service is available, a public fire alarm box shall be located nearby.NFPA 36 pdf download.