A diagram or plan must be available indicating the distribution, type and diameter of the piping used, location of the LP gas containers, location of the equipment to be supplied and design demand of the equipment, both the diagram and the installation must be done by a responsible professional.
The container(s) being filled on site should not have excessive dents, bulges, grooves or corrosion.
The vessel(s) being filled on site must be connected to a first stage or high pressure regulator by steam service valves connected with rigid piping or flexible metal connector.
The container may be placed on the roof in compliance with NFPA 58, sections 6.6.7 and 6.20.
LP-Gas supply containers should be located outside the building, in an open and ventilated space that avoids dangerous gas concentrations.
If an enclosure is constructed to prevent unauthorized tampering with the LP-Gas supply container, it should be constructed of non-combustible materials, allowing ventilation and limiting the manipulation of the cylinder and its accessories.
Containers should be located at least 3 m away from accumulated combustible materials.
LP-Gas supply containers should be located in a vertical position.
Cylinders should only be installed at floor level and should be fixed on a firm base or otherwise firmly secured.
The cylinder must not be in direct contact with ground.
On-site filling vessels shall be located with respect to adjacent vessels, major buildings, groups of buildings or boundaries where construction is possible, complying with NFPA 58.
Relief valves on in-situ filled containers shall comply with the clearances established in at table 6.3.4.3 of NFPA 58.
If transfer pipelines are installed, they must not cross internal areas of buildings y must comply with table 6.5.2.1 of NFPA 58.
The piping shall not pass through internal areas of the building and shall comply with the distances in the table below. table 6.5.2.1 of NFPA 58
LP gas containers that are located less than 3 meters from public roads or parking lots must have protective posts to protect their integrity. must have protection posts to protect the integrity of the containers.
Permanently installed horizontal ASME vessels shall be supported in accordance with Table 6.6.3.3 NFPA 58.
Signage with "Flammable Gas" legends and the NFPA 704 safety diamond must be posted
at
the place where the containers are stored
Container valves must be approved for LP-Gas distribution and must be in good condition.
Cylinder overpressure relief devices must be certified or approved for LP-Gas distribution. LP-Gas distribution.
Cylinder overpressure relief devices should be in good condition when performing an external visual inspection.
The outlet connection of the cylinders' overpressure relief valve should be oriented towards the protection collar openings.
The vent discharge of the cylinder overpressure relief valve must be separated by at least 90 cm vertically to any opening entering the building that is below the discharge of the safety device.
The vent discharge of the overpressure relief valve of the exchange cylinder must be separated at least 1.5 m from any ignition source or mechanical ventilation system entering the building.
The vent discharge of the overpressure relief valve or the overfill prevention device of the filled-in-place cylinder must be separated by at least 3 m from any ignition source or mechanical ventilation system entering the building.
When the cylinder is filled on site it must have a fixed maximum fill level indicator approved for LP-Gas distribution.
When the cylinder is filled on site, it must have a fixed maximum fill level indicator in good condition when an external visual inspection is performed.
When hose is used for connection of the cylinder to the LPG system, it must be approved and marked for use with LPG.
When flexible metal connectors are used to connect the cylinder to the LPG system, they must be approved for LPG use.
When flexible metal hose or fittings are used to connect the cylinder to the LPG system, they must be in good condition.
When flexible hose or connectors are used to connect the cylinder to the LPG system, they should be as short as possible, the maximum allowed being 1.5 m (4 ft).
Assembled hose assemblies, after installation of couplings, should be made in accordance with the manufacturer's instructions.
Valve coupling manifolds must be approved for LP-Gas distribution.
Valve coupling manifolds should be found to be in good condition when performing an external visual inspection. inspection.
The facility must have a two-stage regulating system, an integral two-stage regulator or a 2 psi regulating system on all fixed piping systems for fixtures designed to operate at ½ psig (3.4 kPag) pressure [normally operated at 11 in. water column (2.7 kPag) pressure].
Regulators must be approved for LP-Gas distribution and must be in good working order when performing a external visual inspection.
First stage and high pressure regulators should be installed outside the building.
Upstream of each pressure regulator there must be an LP gas shut-off valve and it must be accessible.
The gas discharge from the venting or venting of pressure regulators installed outdoors must be directed to the floor or installed according to the manufacturer's instructions.
The discharge point of the pressure relief device of regulators installed outside buildings must be located at least 1 m horizontally from the opening of any building or habitable structure located below the discharge level.
The discharge point of the pressure relief device of the regulators shall not be located under or inside any building unless such space is not enclosed for more than 50% of its perimeter.
The vent discharge point of regulators installed outside buildings or habitable structures of fixed piping systems must be located at least 1.5 m in all directions from any source of ignition, direct vent appliance connections (sealed combustion system), or mechanically vented air ducts.
A main shut-off valve should be provided in an easily accessible location prior to building entry.
The passage of piping between independent structures must be carried out with devices that provide the required flexibility in case of earthquakes.
Passages through solid walls or partitions must be made with approved flexible pipe or rigid pipe installed according to the requirements stipulated in the regulations.
The pipe must be painted yellow and identified with the word LP gas with arrows indicating the direction of flow, along its entire length (inside and outside).
The pipe may be supported with any of the following accessories: metal pipe hooks, metal pipe straps, metal bands, metal brackets, metal hangers, structural building components.
Supports must be suitable for the pipe size, and be of adequate strength and quality.
LP-Gas piping supports should be located at intervals according to their diameter, which prevents or dampens excessive vibration.
The pipe must not be supported by other pipe.
The discharge from the required pressure relief device of regulators installed inside the building must be directed to the outside air with supported piping.
The discharge line of the required regulator pressure relief device installed inside the building must have at least the same nominal pipe size as the regulator vent connection.
If there is more than one regulator at an indoor location, all should be individually vented to the outside or vent lines should be connected to a manifold in accordance with accepted engineering practices to minimize back pressure.
The vent discharge line material for regulators installed indoors shall comply with 5.8.3. of NFPA 58.
The vent discharge of regulators installed indoors must be located at least 1 m in a horizontal line from any building connection below the level of such discharge.
The discharge outlet of the vent or vent of the regulators installed indoors must be located at least 1.5 m in any direction from any source of ignition, openings to direct venting devices or mechanical ventilation air inlets.
The discharge outlet of the vent or vent of the regulators installed inside must be installed or protected from blockages so as not to be affected by the elements (mud, debris or insects).
All materials and equipment should be of corrosion resistant materials or should be coated or protected to minimize external corrosion.
Los artefactos y equipo se deben conectar a la tubería del edificio cumpliendo con alguno de los métodos
definidos en 9.6.1 de NFPA 54.
Commercial cooking appliances that are mobilized for cleaning and sanitizing purposes must be connected in accordance with the manufacturer's installation instructions using appliance connectors that are listed and comply with ANSI Z21.69/CSA 6.22, Displacement Gas Appliance Connectors.
Installation of the commercial appliance connector must be performed in accordance with the manufacturer's installation instructions.
The displacement of wheeled devices must be limited by a mechanism that restricts the displacement distance, and must be installed in accordance with the connector and device manufacturers' instructions.
Each appliance connected to the piping system must have an approved shut-off valve, accessible with a non-removable operating element or a listed gas tap with protection.
Each of the shut-off valves and the gas tap with protection must be intended to serve only one appliance.
Each of the shut-off valves must be installed within 1.8 m of the appliance it feeds.
Leak detection devices must be available near equipment that consumes such product, approved for LP-Gas.
The installation of the sensors must be carried out according to the manufacturer's instructions.
The LPG leak detection system should issue a timely notification (audible alarm) to the occupants of the premises and should automatically close the shut-off valves (solenoid valve).
COOKING UNITS
Fume extraction system for cooking equipment
Cooking equipment used in processes that generate smoke or grease-laden vapors must be equipped with an extraction system.
Cooking equipment must be installed and listed in accordance with ANSI/UL 197, Standard for Commercial Electric Cooking Appliances, or an equivalent reduced emissions standard, and therefore is not required to be equipped with an exhaust system.
All equipment and its performance must be maintained in accordance with design and installation requirements during all periods of operation of the kitchen equipment.
All listed appliances must be installed in accordance with the terms of their listings and the manufacturer's instructions.
All interior surfaces of the exhaust system must be accessible for cleaning and inspection.
The entire extraction system should be inspected for grease accumulations. This inspection should be carried out by properly trained and qualified persons on a quarterly basis.
At the time of inspection, if the exhaust system is found to be contaminated with deposits generated by grease-laden vapors, the contaminated portions of the exhaust system should be cleaned.
Upon completion of the cleaning or inspection, the company in charge of cleaning the exhaust system and the person performing the work at the site must provide the owner of the system with a written report that also specifies the areas that were inaccessible or not cleaned.
Hoods, grease removal devices, exhaust fans and ducts must have a clearance of at least 45 cm to combustible materials, 8 cm to materials of limited combustibility and 0 cm to non-combustible materials.
The hood, duct, or grease removal device must be listed for clearances less than those required in the previous item, and must meet the listing requirements.
When a clearance reduction system is applied using separate sheet metal placement methods with combustible spacers or other materials, it must be performed according to the specifications of NFPA 1 Article 50.2.2.2.3 on clearance reduction.
Cooking equipment that accumulates grease under the surface, behind the equipment or in the exhaust system of the ventilation gases of such equipment, such as griddles or charcoal grills, should be inspected and if grease accumulation is detected, it should be cleaned by a properly trained person.
GENERAL ASPECTS
WAYS OF OUTPUT
Human Safety and Fire Protection
The number of means of egress must be complied with, according to the occupancy classification and the number of people the site can accommodate.
Each of the means of egress must discharge onto a public road or into an exterior outlet discharge.
The width of the means of egress must be equal to or greater than 91.5 centimeters and be in accordance with the number of people that can be accommodated in the place.
The means of egress must be separated by no less than half the diagonal of the building and the travel distance must comply with current regulations. must comply with current regulations.
Exits must be properly marked as indicated in the regulations in force.
PORTABLE EXTINGUISHERS
A battery of extinguishers consisting of a 4.54 kg carbon dioxide extinguisher, rated 10B-C, and a 9.7 L pressurized water extinguisher, rated 2A, should be available and located so that no more than 23 m must be traveled to reach the nearest extinguisher battery.
A 4.54 kg ABC extinguisher with a 4A-40B-C rating must be located in such a way that it does not need to be must not
more than every 15 m to reach the extinguisher.
Installed extinguishers must be listed and at the correct height (according to their weight).
Portable extinguishing equipment must have annual maintenance and hydrostatic tests in force.
Installed extinguishers should be easily accessible.
EMERGENCY LIGHTING
Lamps should be placed at evacuation routes, stair accesses, landings, doors and changes of direction.
Self-contained emergency lighting fixtures must be in good condition and in working order.
The number of autonomous emergency lighting fixtures should be in accordance with the dimensions and distribution of the premises.
ELECTRICAL INSTALLATION
Electrical distribution boards, as well as their circuits, must be properly labeled.
Outlets with ground-fault protection or circuit breakers that provide ground-fault protection to the outlet circuits should be used in the kitchen, utility room, bathrooms and outdoor areas.
This protection must be provided for: Outlets installed within 6 ft. of the outer edge of sinks. and intended for use by food and/or beverage appliances.
The electrical system must be grounded
Main switches and electrical distribution boards must have their protection covers properly installed and have the corresponding covers in the spaces where there are no circuit breakers installed.
Electrical conductors should be properly routed, no splices or exposed or unprotected conductors should be observed.
The outlet and/or junction boxes must have the respective protection covers installed.
Electrical equipment, outlets and lighting fixtures must be in good condition and properly secured.
No outlet multipliers, power strips and/or extension cords should be used permanently on the site.
Flexible conductors such as TSJ or SPT cord should not be used on site as substitutes for permanent wiring.
Where the use of flexible conductors of type TSJ or SPT strand is permitted, it should be used only in continuous lengths. continuous without splices or branches and are not anchored to the building structure.
Additions or alterations made to the electrical installation must comply with the provisions of the NFPA 70, and at the end of the corresponding work, the professionals responsible for the installation and inspection must inspection must issue a certification indicating compliance with the standards.
ELECTRICAL DEVICES
The connection cords of electrical equipment should be kept in an optimal state of maintenance. When any of them have suffered damage, they should be repaired so that the damaged elements are replaced by those recommended by the manufacturer.
Devices that have a grounding plug must be in good condition.
The rear grille of the refrigerators should not be used for drying or placing items that may damage the coil causing rust, damage or leakage of the refrigerant fluid. damage the coil causing rust, damage or leakage of the refrigerant fluid.
The devices must not show any evidence of damage.
DETECTION AND ALARM SYSTEM
For premises that require it
The structure must have an approved fire detection and alarm system.
Detection and alarm coverage must be complete throughout the structure.
The fire detection and alarm system must be operational and without reports on the system panel.
FIXED FIRE PROTECTION SYSTEM
For premises larger than 2500 m2 or located in a shopping center.
The building must have a fixed fire protection system.
The building must have full automatic sprinkler coverage and cabinets.
The kitchen hood must have a wet chemical agent suppression system.
NO SMOKING BAN
No smoking signs must be displayed in the format and dimensions defined in Annex 1 of the Decree. N° 37185-S-MEIC-MTSS-MP-H-SP.
Flammable Gas" "No Smoking" signs must be posted in the place where the containers are stored. containers are stored.
Signs must be maintained in good condition.
EMERGENCY PLAN
An emergency plan should be prepared by a professional with risk management skills. It is recommended that this plan be prepared in accordance with the requirements of standard CNE-NA-INTE-DN-01.
