{"id":1957,"date":"2020-08-19T08:44:38","date_gmt":"2020-08-19T08:44:38","guid":{"rendered":"https:\/\/stecvina.com\/?post_type=solution&#038;p=1957"},"modified":"2026-11-13T16:30:24","modified_gmt":"2026-11-13T09:30:24","slug":"he-thong-chua-chay-tu-dong-sms-227","status":"publish","type":"solution","link":"https:\/\/stecvina.com\/en\/solution\/sms-227-automatic-fire-suppression-system\/","title":{"rendered":"SMS-227: HFC-227ea Automatic-Activation Gas Fire Extinguisher for Small Technical Spaces"},"content":{"rendered":"<div class=\"dmg-answer\" style=\"border-left:4px solid #d4213a;background:#f6f7f9;padding:14px 18px;margin:0 0 24px;border-radius:4px;\">\n<p><strong>Quick answer:<\/strong> SMS-227 is S-TEC VINA's automatic-activation gas fire extinguisher using HFC-227ea (FM-200). It discharges automatically when the temperature reaches 68\u00b0C, with no control panel required. Under Clause 5.1.3 of TCVN 3890:2023, it may be used in place of an automatic gas fire suppression system in normally unoccupied areas of \u2264 100 m\u00b2.<\/p>\n<ul>\n<li><strong>Cylinder sizes:<\/strong> 10 litres (4 \u2013 8 kg fill) and 15 litres (7 \u2013 15 kg fill)<\/li>\n<li><strong>Working pressure:<\/strong> 25 bar at 20\u00b0C<\/li>\n<li><strong>Discharge time:<\/strong> \u2264 10 seconds<\/li>\n<li><strong>Connection:<\/strong> up to 15 cylinders, simultaneous discharge<\/li>\n<li><strong>Circulation licence:<\/strong> No. 154\/PCCC under Decree 105\/2025\/ND-CP<\/li>\n<\/ul>\n<\/div>\n<h2>1. Where is the SMS-227 automatic-activation fire extinguisher used?<\/h2>\n<p>SMS-227 is designed for electrical rooms, electrical risers and other small areas where water, powder or foam suppression is unsuitable because it can damage electrical and electronic equipment. The cylinder is compact and wall-mounted, with no cylinder room or long piping network required.<\/p>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Application<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Electrical risers in buildings<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Narrow space, normally unoccupied<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Generator rooms, electrical rooms<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">High-value electrical equipment; secondary damage must be minimised<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Telecom BTS stations<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Small, dispersed stations, usually unmanned<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Solar power plants<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Inverter rooms, substation control rooms<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Small server rooms, cash vaults<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Small, isolated areas that need automatic fire suppression<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Renovation projects and retrofit installations<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">No piping network or cylinder room required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>When not to use SMS-227:<\/strong> areas larger than 100 m\u00b2 or requiring more than 15 cylinders, and areas that are normally occupied (outside the scope of Clause 5.1.3, TCVN 3890:2023). In these cases, consider the <a href=\"https:\/\/stecvina.com\/en\/sfs-200-hfc-227ea-gas-fire-extinguishing-system-fm-200\/\">SFS-200 piped HFC-227ea gas fire suppression system<\/a>.<\/p>\n<h2>2. Legal basis and applicable standards<\/h2>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Regulation \/ standard<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Application to SMS-227<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">TCVN 3890:2023, Clause 4.10<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Defines areas that must be fitted with an automatic fire suppression system (Appendix A1)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">TCVN 3890:2023, Clause 5.1.3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Normally unoccupied areas of \u2264 100 m\u00b2 may use automatic-activation fire extinguishers in place of an automatic fire suppression system<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">TCVN 12314-2:2022<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Standard for automatic-activation gas fire extinguishers; Clause 5 covers installation<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">TCVN 7161-9:2024<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">HFC-227ea agent quantity calculation<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">TCVN 8366:2010<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Pressure vessels \u2013 design and manufacturing requirements (cylinder shell)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Decree 105\/2025\/ND-CP<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Circulation licence No. 154\/PCCC<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">HFC-227ea agent certification<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">UL Listed (EX28624), FM Approved<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Management systems<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">BS EN ISO 9001:2015, BS EN ISO 14001:2015, ISO 45001:2018<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>What does TCVN 12314-2:2022 require for automatic-activation gas fire extinguishers?<\/h3>\n<p>TCVN 12314-2:2022 is the Vietnamese national standard for automatic-activation fire extinguishers; Part 2 covers gas fire extinguishers. For installation, Clause 5 of the standard requires:<\/p>\n<ul>\n<li>Cylinders must be installed in accordance with the technical specifications declared by the manufacturer and tested to TCVN 12314-2.<\/li>\n<li>Cylinders must stay within the manufacturer's declared limits for installation height and coverage area.<\/li>\n<li>The discharge nozzle must be no more than 300 mm below the ceiling of the protected area.<\/li>\n<li>The heat-sensing element must be installed no higher than 9 m and 0.08 \u2013 0.4 m below the ceiling.<\/li>\n<\/ul>\n<h2>3. Operating principle<\/h2>\n<ol>\n<li><strong>Detection and activation:<\/strong> the cylinder valve uses a fast-response heat-sensing glass bulb rated at 68\u00b0C. The valve assembly has 360\u00b0 impact protection.<\/li>\n<li><strong>Discharge:<\/strong> when the bulb bursts, HFC-227ea discharges through the 180\u00b0 nozzle mounted on the valve, with a 5 m protection radius and a discharge time of \u2264 10 seconds.<\/li>\n<li><strong>Multi-cylinder clusters:<\/strong> when any cylinder in the cluster activates, the remaining cylinders are triggered to discharge simultaneously by pressure through DN6 copper tubing, so the full agent quantity is discharged within 10 seconds.<\/li>\n<li><strong>Signalling to the fire alarm system:<\/strong> each cylinder provides 2 voltage-free contact supervisory signals: <strong>fault signal<\/strong> when cylinder pressure drops by 10% or more, and a <strong>discharge signal<\/strong> from the pressure switch (NO, 3A\/24VDC), used for fire notification and to control other building systems such as shutting down air conditioning and ventilation fans.<\/li>\n<\/ol>\n<p><strong>Extinguishing agent:<\/strong> HFC-227ea (FM-200) is stored as a liquefied gas, superpressurised with nitrogen to 25 bar. The agent is colourless, odourless, electrically non-conductive and leaves no residue after discharge, and is suitable for Class A and B fires and higher-hazard Class A (HA) areas. The post-discharge concentration is calculated not to exceed the NOAEL of 9.0%, so it does not affect people.<\/p>\n<figure class=\"aligncenter\"><img decoding=\"async\" class=\"wp-image-30570 size-large\" src=\"https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-1024x837.png\" alt=\"2-cylinder SMS-227 cluster connected by DN6 copper tubing\" width=\"1024\" height=\"837\" loading=\"lazy\" srcset=\"https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-1024x837.png 1024w, https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-300x245.png 300w, https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-768x627.png 768w, https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-1536x1255.png 1536w, https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-2048x1673.png 2048w, https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/cum-2-binh-sms-227-ong-dong-dn6-15x12.png 15w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>2-cylinder SMS-227 cluster connected by DN6 copper tubing<\/figcaption><\/figure>\n<h2>4. Technical specifications of the SMS-227 10 L and 15 L cylinders<\/h2>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Specification<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">SMS-227-8L<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">SMS-227-15L<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Cylinder capacity<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">10 litres<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">15 litres<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">HFC-227ea (FM-200) fill range<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">4 \u2013 8 kg<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">7 \u2013 15 kg<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Cylinder diameter<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">210 mm (\u00b11%)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">235 mm (\u00b11%)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Height<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">470 mm (\u00b11%)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">550 mm (\u00b11%)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Empty cylinder weight<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">7,5 kg (\u00b15%)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">9,6 kg (\u00b15%)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Working pressure (fill pressure at 20\u00b0C)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">25 bar<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">25 bar<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Maximum working pressure<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">40 bar<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">40 bar<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Discharge time<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">\u2264 10 seconds<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">\u2264 10 seconds<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Discharge nozzle<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">180\u00b0, protection radius 5 m<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">180\u00b0, protection radius 5 m<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Activation<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Automatic, heat-activated at 68\u00b0C<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Automatic, heat-activated at 68\u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Multi-cylinder connection<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Up to 15 cylinders, total length \u2264 70 m<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Up to 15 cylinders, total length \u2264 70 m<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Cylinder pressure supervision<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Pressure gauge with supervisory contact (NO)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Pressure gauge with supervisory contact (NO)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Cylinder shell<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">SG295 steel (JIS G3116) \/ HP295 (GB 6653), 2.6 \u2013 3 mm thick, red powder coat<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Same as the 10 L cylinder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>How to read the model code:<\/strong> the number in the code (8L, 15L) is the maximum fill in kg. The SMS-227-8L has a 10-litre capacity and holds up to 8 kg of FM-200; the SMS-227-15L has a 15-litre capacity and holds up to 15 kg of FM-200.<\/p>\n<p>Need the full SMS-227 catalog with all specifications and cylinder-cluster schematics? <a href=\"https:\/\/stecvina.com\/en\/contact\/\">Contact S-TEC VINA<\/a> to receive the latest catalog.<\/p>\n<h2>5. How to calculate the agent quantity and number of SMS-227 cylinders<\/h2>\n<p>The HFC-227ea quantity is calculated to TCVN 7161-9:2024, based on room volume and fire hazard class. The table below applies to areas with a minimum temperature of 20\u00b0C.<\/p>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Fire hazard class<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Minimum design concentration<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Agent quantity required (kg\/m\u00b3)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Class A surface fires (wood, polymers, PP\/ABS plastics)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">7,9%<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">0,626<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Higher-hazard Class A (HA), such as electrical rooms<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">8,5%<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">0,678<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Class B (flammable liquids, heptane)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">9,0%<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">0,722<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><strong>Safety limits:<\/strong> The NOAEL (No Observed Adverse Effect Level) of HFC-227ea is 9.0%; the LOAEL (Lowest Observed Adverse Effect Level) is 10.5%. The fill quantity is calculated so that the post-discharge concentration does not exceed the NOAEL.<\/p>\n<h3>4 calculation steps with an example<\/h3>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Step<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Example: electrical room 2.5 m \u00d7 2.7 m, 3.2 m high<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">1. Identify the fire hazard class (A, B or HA)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Electrical room: select HA, 8.5% concentration<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">2. Calculate the volume (minus fixed impermeable structures)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">V = 2,5 \u00d7 2,7 \u00d7 3,2 = 21,6 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">3. Calculate the agent quantity<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">m = 21,6 \u00d7 0,678 = 14,65 kg<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">4. Order<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">01 \u00d7 SMS-227-15L-15.0 cylinder (15 L cylinder filled with 15 kg HFC-227ea) + 01 \u00d7 STV-PS discharge pressure switch. Wall bracket supplied with the cylinder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>How many m\u00b3 does one 8 kg or 15 kg FM-200 cylinder protect?<\/h3>\n<p>The volume one cylinder protects equals its agent fill divided by the agent quantity required per m\u00b3 (per the concentration table above, minimum temperature 20\u00b0C):<\/p>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Agent fill<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Class A (0.626 kg\/m\u00b3)<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">HA (0,678 kg\/m\u00b3)<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Class B (0.722 kg\/m\u00b3)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">4 kg (10 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">6,4 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">5,9 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">5,5 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">6 kg (10 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">9,6 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">8,8 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">8,3 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">8 kg (10 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">12,8 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">11,8 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">11,1 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">10 kg (15 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">16,0 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">14,7 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">13,9 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">12 kg (15 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">19,2 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">17,7 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">16,6 m\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">15 kg (15 L cylinder)<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">24,0 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">22,1 m\u00b3<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">20,8 m\u00b3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>For larger volumes, use a cluster of linked cylinders. For example, a cluster of five fully filled 15 L cylinders protects about 120 m\u00b3 for Class A. For a quick calculation, use the <a href=\"https:\/\/stecvina.com\/en\/hfc-227ea-fm-200-gas-mass-meter-sms-system\/\">HFC-227ea agent quantity calculator for the SMS system<\/a>.<\/p>\n<h2>6. Installation requirements for the wall-mounted SMS-227 FM-200 cylinder<\/h2>\n<p>Under Clause 5 of TCVN 12314-2:2022, cylinders must be installed within the technical limits declared and tested by the manufacturer.<\/p>\n<ul>\n<li><strong>Area height:<\/strong> areas up to 5.5 m high use one tier of cylinders (maximum installation height 5.42 m); areas higher than 5.5 m (total height \u2264 9 m) use two tiers, each up to 5.5 m.<\/li>\n<li><strong>Sensor position:<\/strong> 0.08 \u2013 0.4 m below the ceiling of the protected area; sensor installation height no more than 9 m.<\/li>\n<li><strong>Discharge nozzle:<\/strong> no more than 300 mm below the ceiling; can be mounted on the valve assembly or installed remotely from the cylinder within tested limits.<\/li>\n<li><strong>Cylinder layout:<\/strong> protection radius R = 5 m; maximum spacing between cylinders L = 6 m.<\/li>\n<li><strong>Mounting:<\/strong> cylinders are supplied with a wall-mounting kit or can be mounted on a support frame.<\/li>\n<\/ul>\n<h2>7. Limitations and conditions<\/h2>\n<ul>\n<li><strong>Scope of use:<\/strong> using automatic-activation cylinders in place of an automatic gas fire suppression system under Clause 5.1.3 of TCVN 3890:2023 applies only to normally unoccupied areas of \u2264 100 m\u00b2.<\/li>\n<li><strong>Heat activation:<\/strong> the cylinder discharges when the temperature at the sensing bulb reaches 68\u00b0C.<\/li>\n<li><strong>Interlocks:<\/strong> to provide fire notification and control air conditioning and ventilation on discharge, connect the discharge signal to the building fire alarm system.<\/li>\n<li><strong>Installation limits:<\/strong> cylinders must be installed within the manufacturer's declared limits for height and coverage area; up to 15 cylinders per cluster, total connection length \u2264 70 m.<\/li>\n<li><strong>Agent fill:<\/strong> calculated from the volume and fire hazard class of each area, ensuring the post-discharge concentration does not exceed the NOAEL.<\/li>\n<\/ul>\n<h2>8. Ordering information<\/h2>\n<div style=\"overflow-x:auto;margin:0 0 20px;\">\n<table style=\"width:100%;border-collapse:collapse;border:1px solid #d0d4da;font-size:15px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Part number (P\/N)<\/th>\n<th style=\"border:1px solid #d0d4da;background:#d4213a;color:#ffffff;padding:10px 12px;text-align:left;font-weight:600;\">Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">SMS-227-15L-xxx<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">15 L cylinder with cylinder valve and pressure gauge with integrated supervisory contact. xxx = calculated agent fill (kg)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">SMS-227-8L-xxx<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">10 L cylinder with cylinder valve and pressure gauge with integrated supervisory contact. xxx = calculated agent fill (kg)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">ASy<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Connection kit for a cluster of y cylinders (from 1 up to 15 cylinders)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">STV-PS<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Discharge pressure switch<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">SMS-PK1<\/td>\n<td style=\"border:1px solid #d0d4da;padding:9px 12px;vertical-align:top;\">Installation kit for 01 cylinder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><a href=\"https:\/\/stecvina.com\/en\/contact\/\">Send your floor plan for S-TEC VINA engineers to calculate the number of cylinders<\/a> or to request the SMS-227 catalog.<\/p>\n<h2>9. How does S-TEC VINA supply SMS-227?<\/h2>\n<p>SMS-227 is researched, developed and manufactured by S-TEC VINA Co., Ltd., a Vietnam \u2013 Korea joint venture. The product holds circulation licence No. 154\/PCCC under Decree 105\/2025\/ND-CP. The system has a simple configuration, fast installation and short lead times, and cylinders can be refilled after discharge.<\/p>\n<div class=\"dmg-faq\">\n<h2>Frequently asked questions<\/h2>\n<h3>Does the SMS-227 automatic-activation fire extinguisher need a power supply?<\/h3>\n<p>No. The cylinder activates itself via a heat-sensing glass bulb at 68\u00b0C. The two supervisory signals (fault and discharge) are voltage-free contacts for connection to the fire alarm system.<\/p>\n<h3>How many m\u00b3 does one 15 kg FM-200 cylinder protect?<\/h3>\n<p>An SMS-227-15L filled with 15 kg protects about 24.0 m\u00b3 for Class A, 22.1 m\u00b3 for HA areas and 20.8 m\u00b3 for Class B (minimum temperature 20\u00b0C). A 10 L cylinder filled with 8 kg protects about 11.1 \u2013 12.8 m\u00b3.<\/p>\n<h3>How much HFC-227ea does an electrical room need?<\/h3>\n<p>Electrical rooms fall under higher-hazard Class A (HA), requiring about 0.678 kg\/m\u00b3 at 20\u00b0C per TCVN 7161-9:2024. For example, a 21.6 m\u00b3 room needs about 14.65 kg, i.e. one 15 L cylinder.<\/p>\n<h3>What size is the SMS-227-8L cylinder?<\/h3>\n<p>The SMS-227-8L has a 10-litre capacity and holds up to 8 kg of HFC-227ea. The number in the code is the maximum fill, not the capacity.<\/p>\n<h3>Is SMS-227 safe for people?<\/h3>\n<p>HFC-227ea is a colourless, odourless, electrically non-conductive clean agent. The quantity is calculated so that the post-discharge concentration does not exceed the NOAEL of 9.0%. The substitution basis under Clause 5.1.3 of TCVN 3890:2023 applies to normally unoccupied areas.<\/p>\n<h3>What is the maximum number of SMS-227 cylinders that can be connected?<\/h3>\n<p>Up to 15 cylinders, total connection length \u2264 70 m, spacing between cylinders \u2264 6 m. All cylinders discharge simultaneously within \u2264 10 seconds.<\/p>\n<h3>How does SMS-227 differ from the SFS-200 system?<\/h3>\n<p>SMS-227 is a local, heat-activated cylinder at 25 bar with a simple configuration, for small areas. SFS-200 is an engineered gas fire suppression system with a control panel and piping network, for larger areas.<\/p>\n<h3>Can SMS-227 cylinders be refilled?<\/h3>\n<p>Yes. SMS-227 cylinders can be refilled after discharge.<\/p>\n<\/div>\n<p><strong>See also:<\/strong> <a href=\"https:\/\/stecvina.com\/en\/sms-he-thong-binh-chua-chay-tu-dong\/\">SMS product page \u2013 automatic fire extinguisher system<\/a>, <a href=\"https:\/\/stecvina.com\/en\/sfs-200-hfc-227ea-gas-fire-extinguishing-system-fm-200\/\">SFS-200 piped HFC-227ea gas fire suppression system<\/a>, <a href=\"https:\/\/stecvina.com\/en\/hfc-227ea-fm-200-gas-mass-meter-sms-system\/\">HFC-227ea agent quantity calculator for the SMS system<\/a>, <a href=\"https:\/\/stecvina.com\/en\/contact\/\">send an enquiry to S-TEC VINA engineers<\/a>.<\/p>\n<p><em>Information in this article is based on S-TEC VINA's SMS-227 technical documentation, updated 10\/2026. The product must be used correctly in accordance with the manufacturer's recommendations.<\/em><\/p>","protected":false},"author":4,"featured_media":30569,"template":"","meta":{"_acf_changed":false},"solution_cat":[22],"solution_tag":[24],"class_list":["post-1957","solution","type-solution","status-publish","has-post-thumbnail","hentry","solution_cat-hoat-dong","solution_tag-tin-tuc-san-pham"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>B\u00ecnh kh\u00ed ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 (HFC-227ea) - S-TEC VINA<\/title>\n<meta name=\"description\" content=\"B\u00ecnh kh\u00ed ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 d\u00f9ng HFC-227ea (FM-200): t\u1ef1 x\u1ea3 \u1edf 68\u00b0C, b\u00ecnh 10L\/15L, 25 bar, n\u1ed1i t\u1ed1i \u0111a 15 b\u00ecnh. 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Th\u00f4ng s\u1ed1, c\u00e1ch t\u00ednh, l\u1eafp \u0111\u1eb7t.\",\"breadcrumb\":{\"@id\":\"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/\"]}],\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"B\u00ecnh ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 c\u00f3 c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kh\u00f4ng. B\u00ecnh t\u1ef1 k\u00edch ho\u1ea1t b\u1eb1ng b\u1ea7u th\u1ee7y tinh c\u1ea3m bi\u1ebfn nhi\u1ec7t \u1edf 68\u00b0C. Hai t\u00edn hi\u1ec7u gi\u00e1m s\u00e1t (b\u00e1o l\u1ed7i, b\u00e1o x\u1ea3 kh\u00ed) l\u00e0 ti\u1ebfp \u0111i\u1ec3m kh\u00f4ng \u0111i\u1ec7n \u00e1p, d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng b\u00e1o ch\u00e1y.\"}},{\"@type\":\"Question\",\"name\":\"1 b\u00ecnh FM-200 15 kg b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c bao nhi\u00eau m\u00b3?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"B\u00ecnh SMS-227-15L n\u1ea1p 15 kg b\u1ea3o v\u1ec7 kho\u1ea3ng 24,0 m\u00b3 \u1edf c\u1ea5p A, 22,1 m\u00b3 \u1edf khu v\u1ef1c HA v\u00e0 20,8 m\u00b3 \u1edf c\u1ea5p B (nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u 20\u00b0C). B\u00ecnh 10L n\u1ea1p 8 kg b\u1ea3o v\u1ec7 kho\u1ea3ng 11,1 \u2013 12,8 m\u00b3.\"}},{\"@type\":\"Question\",\"name\":\"Ph\u00f2ng k\u1ef9 thu\u1eadt \u0111i\u1ec7n c\u1ea7n bao nhi\u00eau kg HFC-227ea?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ph\u00f2ng k\u1ef9 thu\u1eadt \u0111i\u1ec7n thu\u1ed9c nh\u00f3m nguy hi\u1ec3m cao h\u01a1n c\u1ea5p A (HA), l\u01b0\u1ee3ng kh\u00ed kho\u1ea3ng 0,678 kg\/m\u00b3 \u1edf 20\u00b0C theo TCVN 7161-9:2024. V\u00ed d\u1ee5 ph\u00f2ng 21,6 m\u00b3 c\u1ea7n kho\u1ea3ng 14,65 kg, d\u00f9ng 01 b\u00ecnh 15L.\"}},{\"@type\":\"Question\",\"name\":\"M\u00e3 SMS-227-8L l\u00e0 b\u00ecnh bao nhi\u00eau l\u00edt?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"B\u00ecnh SMS-227-8L c\u00f3 dung t\u00edch 10 l\u00edt, n\u1ea1p t\u1ed1i \u0111a 8 kg HFC-227ea. S\u1ed1 trong m\u00e3 l\u00e0 l\u01b0\u1ee3ng n\u1ea1p t\u1ed1i \u0111a, kh\u00f4ng ph\u1ea3i dung t\u00edch.\"}},{\"@type\":\"Question\",\"name\":\"SMS-227 c\u00f3 an to\u00e0n cho ng\u01b0\u1eddi kh\u00f4ng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"HFC-227ea l\u00e0 kh\u00ed s\u1ea1ch, kh\u00f4ng m\u00e0u, kh\u00f4ng m\u00f9i, kh\u00f4ng d\u1eabn \u0111i\u1ec7n. L\u01b0\u1ee3ng kh\u00ed \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ec3 n\u1ed3ng \u0111\u1ed9 sau x\u1ea3 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 NOAEL 9,0%. 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Th\u00f4ng s\u1ed1, c\u00e1ch t\u00ednh, l\u1eafp \u0111\u1eb7t.","og_url":"https:\/\/stecvina.com\/en\/solution\/sms-227-automatic-fire-suppression-system\/","og_site_name":"S-TEC VINA","article_publisher":"https:\/\/www.facebook.com\/stecvina","article_modified_time":"2026-11-13T09:30:24+00:00","og_image":[{"url":"https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/binh-chua-chay-tu-dong-kich-hoat-sms-227-15l-1024x715.png","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"TechArticle","@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#article","isPartOf":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/"},"author":{"@id":"https:\/\/stecvina.com\/en\/#organization"},"headline":"SMS-227: B\u00ecnh kh\u00ed ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t HFC-227ea cho kh\u00f4ng gian k\u1ef9 thu\u1eadt nh\u1ecf","datePublished":"2020-08-19T08:44:38+00:00","dateModified":"2026-11-13T09:30:24+00:00","mainEntityOfPage":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/"},"wordCount":3379,"publisher":{"@id":"https:\/\/stecvina.com\/#organization"},"image":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#primaryimage"},"thumbnailUrl":"https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/binh-chua-chay-tu-dong-kich-hoat-sms-227-15l-scaled.png","inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/","url":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/","name":"B\u00ecnh kh\u00ed ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 (HFC-227ea) - S-TEC VINA","isPartOf":{"@id":"https:\/\/stecvina.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#primaryimage"},"image":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#primaryimage"},"thumbnailUrl":"https:\/\/stecvina.com\/wp-content\/uploads\/2020\/08\/binh-chua-chay-tu-dong-kich-hoat-sms-227-15l-scaled.png","datePublished":"2020-08-19T08:44:38+00:00","dateModified":"2026-11-13T09:30:24+00:00","description":"B\u00ecnh kh\u00ed ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 d\u00f9ng HFC-227ea (FM-200): t\u1ef1 x\u1ea3 \u1edf 68\u00b0C, b\u00ecnh 10L\/15L, 25 bar, n\u1ed1i t\u1ed1i \u0111a 15 b\u00ecnh. Th\u00f4ng s\u1ed1, c\u00e1ch t\u00ednh, l\u1eafp \u0111\u1eb7t.","breadcrumb":{"@id":"https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/stecvina.com\/solution\/he-thong-chua-chay-tu-dong-sms-227\/"]}],"mainEntity":[{"@type":"Question","name":"B\u00ecnh ch\u1eefa ch\u00e1y t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t SMS-227 c\u00f3 c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng?","acceptedAnswer":{"@type":"Answer","text":"Kh\u00f4ng. B\u00ecnh t\u1ef1 k\u00edch ho\u1ea1t b\u1eb1ng b\u1ea7u th\u1ee7y tinh c\u1ea3m bi\u1ebfn nhi\u1ec7t \u1edf 68\u00b0C. Hai t\u00edn hi\u1ec7u gi\u00e1m s\u00e1t (b\u00e1o l\u1ed7i, b\u00e1o x\u1ea3 kh\u00ed) l\u00e0 ti\u1ebfp \u0111i\u1ec3m kh\u00f4ng \u0111i\u1ec7n \u00e1p, d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng b\u00e1o ch\u00e1y."}},{"@type":"Question","name":"1 b\u00ecnh FM-200 15 kg b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c bao nhi\u00eau m\u00b3?","acceptedAnswer":{"@type":"Answer","text":"B\u00ecnh SMS-227-15L n\u1ea1p 15 kg b\u1ea3o v\u1ec7 kho\u1ea3ng 24,0 m\u00b3 \u1edf c\u1ea5p A, 22,1 m\u00b3 \u1edf khu v\u1ef1c HA v\u00e0 20,8 m\u00b3 \u1edf c\u1ea5p B (nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u 20\u00b0C). B\u00ecnh 10L n\u1ea1p 8 kg b\u1ea3o v\u1ec7 kho\u1ea3ng 11,1 \u2013 12,8 m\u00b3."}},{"@type":"Question","name":"Ph\u00f2ng k\u1ef9 thu\u1eadt \u0111i\u1ec7n c\u1ea7n bao nhi\u00eau kg HFC-227ea?","acceptedAnswer":{"@type":"Answer","text":"Ph\u00f2ng k\u1ef9 thu\u1eadt \u0111i\u1ec7n thu\u1ed9c nh\u00f3m nguy hi\u1ec3m cao h\u01a1n c\u1ea5p A (HA), l\u01b0\u1ee3ng kh\u00ed kho\u1ea3ng 0,678 kg\/m\u00b3 \u1edf 20\u00b0C theo TCVN 7161-9:2024. V\u00ed d\u1ee5 ph\u00f2ng 21,6 m\u00b3 c\u1ea7n kho\u1ea3ng 14,65 kg, d\u00f9ng 01 b\u00ecnh 15L."}},{"@type":"Question","name":"M\u00e3 SMS-227-8L l\u00e0 b\u00ecnh bao nhi\u00eau l\u00edt?","acceptedAnswer":{"@type":"Answer","text":"B\u00ecnh SMS-227-8L c\u00f3 dung t\u00edch 10 l\u00edt, n\u1ea1p t\u1ed1i \u0111a 8 kg HFC-227ea. S\u1ed1 trong m\u00e3 l\u00e0 l\u01b0\u1ee3ng n\u1ea1p t\u1ed1i \u0111a, kh\u00f4ng ph\u1ea3i dung t\u00edch."}},{"@type":"Question","name":"SMS-227 c\u00f3 an to\u00e0n cho ng\u01b0\u1eddi kh\u00f4ng?","acceptedAnswer":{"@type":"Answer","text":"HFC-227ea l\u00e0 kh\u00ed s\u1ea1ch, kh\u00f4ng m\u00e0u, kh\u00f4ng m\u00f9i, kh\u00f4ng d\u1eabn \u0111i\u1ec7n. L\u01b0\u1ee3ng kh\u00ed \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ec3 n\u1ed3ng \u0111\u1ed9 sau x\u1ea3 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 NOAEL 9,0%. C\u0103n c\u1ee9 thay th\u1ebf theo \u0110i\u1ec1u 5.1.3 TCVN 3890:2023 \u00e1p d\u1ee5ng cho khu v\u1ef1c th\u01b0\u1eddng kh\u00f4ng c\u00f3 ng\u01b0\u1eddi."}},{"@type":"Question","name":"K\u1ebft n\u1ed1i t\u1ed1i \u0111a bao nhi\u00eau b\u00ecnh SMS-227?","acceptedAnswer":{"@type":"Answer","text":"T\u1ed1i \u0111a 15 b\u00ecnh, t\u1ed5ng chi\u1ec1u d\u00e0i k\u1ebft n\u1ed1i \u2264 70 m, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c b\u00ecnh \u2264 6 m. C\u00e1c b\u00ecnh x\u1ea3 \u0111\u1ed3ng th\u1eddi trong \u2264 10 gi\u00e2y."}},{"@type":"Question","name":"SMS-227 kh\u00e1c h\u1ec7 th\u1ed1ng SFS-200 th\u1ebf n\u00e0o?","acceptedAnswer":{"@type":"Answer","text":"SMS-227 l\u00e0 b\u00ecnh \u0111\u1eb7t t\u1ea1i ch\u1ed7, t\u1ef1 k\u00edch ho\u1ea1t b\u1eb1ng nhi\u1ec7t, \u00e1p su\u1ea5t 25 bar, c\u1ea5u h\u00ecnh \u0111\u01a1n gi\u1ea3n, d\u00f9ng cho khu v\u1ef1c nh\u1ecf. SFS-200 l\u00e0 h\u1ec7 th\u1ed1ng ch\u1eefa ch\u00e1y kh\u00ed c\u00f3 t\u1ee7 \u0111i\u1ec1u khi\u1ec3n v\u00e0 m\u1ea1ng \u0111\u01b0\u1eddng \u1ed1ng, d\u00f9ng cho khu v\u1ef1c l\u1edbn."}},{"@type":"Question","name":"B\u00ecnh SMS-227 c\u00f3 n\u1ea1p l\u1ea1i \u0111\u01b0\u1ee3c kh\u00f4ng?","acceptedAnswer":{"@type":"Answer","text":"C\u00f3. 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