HERE ARE ONLY A FEW STANDARDS FROM THE T.D.I.

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Portable fire extinguishers are to be inspected and certified on a yearly basis.

Fixed Kitchen systems are to be inspected and certified on a minimum of 6months or semi annually.

All inspections and certifications are to be done by individuals holding the required state license employed by a licensed Company.

Sec. 6001.155. EMPLOYEE LICENSE REQUIRED.
(a)
Except as provided by Section 6001.156, an individual, other than an apprentice, must hold a license issued by the department before:
(1)
installing or servicing portable fire extinguishers;
(2)
installing, servicing, or certifying preengineered fixed fire extinguisher systems; or
(3)
planning, supervising, servicing, or certifying the installation of fixed fire extinguisher systems other than preengineered systems.
(b) An individual who holds a license to install or service portable fire extinguishers or install and service
fixed fire extinguisher systems must be an employee or agent of a registered firm. Added by Acts 2007, 80th Leg., R.S., Ch. 730, Sec. 1J.001, eff. April 1, 2009.

Sec. 6001.251. PROHIBITED PRACTICES.
(a) An individual or firm may not:
(1)
engage in the business of installing or servicing portable fire extinguishers without holding a registration certificate;
(2)
engage in the business of planning, certifying, installing, or servicing fixed fire extinguisher systems without holding a registration certificate;
(3)
install, service, or certify the servicing of portable fire extinguishers or plan, certify, service, or install fixed fire extinguisher systems without holding a license;
(4)
perform hydrostatic testing of fire extinguisher cylinders manufactured in accordance with the specifications and requirements of the United States Department of Transportation without holding a hydrostatic testing registration certificate;
(5) obtain or attempt to obtain a registration certificate or license by fraudulent representation;
(6)
install or service portable fire extinguishers or plan, certify, service, or install fixed fire extinguisher systems in violation of this chapter or the rules adopted and administered under this chapter;
(7)
except as provided by Subsection (b), install, service, or hydrostatically test a fire extinguisher that does not have the proper identifying labels;
(8) sell, install, service, or recharge a carbon tetrachloride fire extinguisher; or
(9)
except as provided by Subsection (b), lease, sell, service, or install a portable fire extinguisher, a fixed fire extinguisher system, or extinguisher equipment unless it carries an approval label or listing label issued by a testing laboratory approved by the department.
(b) The commissioner by rule shall permit an individual or firm to service a portable fire extinguisher
regardless of whether the extinguisher carries a label described by Subsection (a). Added by Acts 2007, 80th Leg., R.S., Ch. 730, Sec. 1J.001, eff. April 1, 2009.
Sec. 6001.252.

(f)
All pre-engineered fixed fire extinguishing systems, installed or modified after July 1, 1996, in accordance with NFPA 17 or NFPA 17A or NFPA 96 of the adopted standards, for the protection of commercial cooking areas, must meet the minimum requirements of Underwriters Laboratories, Inc., Standard 300, "Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Area" (UL 300). After January 1, 2008 all existing pre-engineered fixed fire extinguishing systems, installed in accordance with NFPA 17 or NFPA 17A or NFPA 96 of the adopted standards, for the protection of commercial cooking areas, must meet the minimum requirements of Underwriters Laboratories, Inc., Standard 300, "Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Area" (UL 300) or a red tag shall be attached following the procedures in 34.521 of this subchapter (relating to Red Tags).