Where, upon inspection,
the exhaust system is found to be contaminated with
deposits from grease-laden vapors, the contaminated portions
of the exhaust system shall be cleaned by a trained, qualified, and certified person(s) acceptable to the Authority Having
Jurisdiction. [NFPA 96:11.6.1]
Hoods, grease
removal devices, fans, ducts, and other appurtenances
shall be cleaned to remove combustible contaminants
prior to surfaces becoming heavily contaminated with
grease or oily sludge. [NFPA 96:11.6.2]
At the start of the cleaning
process, electrical switches that could be activated accidentally
shall be locked out. [NFPA 96:11.6.3]
Components of the
fire suppression system shall not be rendered inoperable
during the cleaning process. [NFPA 96:11.6.4]
Fire-extinguishing systems shall be
permitted to be rendered inoperable during the cleaning
process where serviced by trained and qualified persons.
[NFPA 96:11.6.5]
Flammable solvents or
other flammable cleaning aids shall not be used. [NFPA 96:11.6.6]
Cleaning chemicals shall
not be applied on fusible links or other detection devices
of the automatic extinguishing system. [NFPA 96:11.6.7]
After the exhaust system is cleaned, it
shall not be coated with powder or other substance.
[NFPA 96:11.6.8]
Where
cleaning procedures are completed, access panels (doors)
and cover plates shall be restored to their normal operational
condition. [NFPA 96:11.6.9]
Where an access panel is
removed, a service company label or tag preprinted with
the name of the company and giving the date of inspection
or cleaning shall be affixed near the affected access
panels. [NFPA 96:11.6.10]
Dampers and diffusers shall be positioned
for proper airflow. [NFPA 96:11.6.11]
Where cleaning procedures are
completed, electrical switches and system components
shall be returned to an operable state. [NFPA 96:11.6.12]
Where an exhaust
cleaning service is used, a certificate showing the name of
the servicing company, the name of the person performing
the work, and the date of inspection or cleaning shall be
maintained on the premises. [NFPA 96:11.6.13]
After cleaning or inspection
is completed, the exhaust cleaning company and the
person performing the work at the location shall provide
the owner of the system with a written report that also
specifies areas that were inaccessible or not cleaned. [NFPA 96:11.6.14]
Where required, certificates of
inspection and cleaning and reports of areas not cleaned
shall be submitted to the Authority Having Jurisdiction.
[NFPA 96:11.6.15]