Thursday 29 March 2018

Potable Water Storage Capacity

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Potable Water Storage Capacity

              105 Cubic meter = 105000 liters

The table below indicates 24 hours storage requirements related to commonly used fittings.


Type of Fixture            Storage Capacity per Fitting

                                        liters             gal

Basin                          90                     23

Bath                        900                     207

Garden watering tap 180                     47

Shower                         140 - 230             36 - 60

Sink                         90 - 180              23 - 47

Urinal                          110                      29

WC                                  180                      47



The table below indicates 24 hours storage requirements related to different types of buildings.
 

Type of Building        Storage per Person

                                               liters             gal

Hostels                                90                      23

Hotels                              135                      35

Offices with canteens           45                      12

Offices without canteens   40                      10

Restaurants, per meal            7                        2

Boarding School                   90                      23


Wednesday 21 March 2018

Bathroom Size

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As per Home Ventilation Institute 

Bathroom Size                         Minimum Ventilation (CFM) Required*

Less than 50 sq. feet                  50 CFM OR 25 LPS     (50 sq. feet  = 4.645 square meter)
                                                                       (100sq.feet = 9.29 squrare meter)

50-100 sq. feet                           1 CFM  = 1 per sqare  foot of floor space


More than 100 sq. feet                     Add the CFM requirement for each fixture:
                                                               Toilet 50 CFM
                                                               Shower 50 CFM
                                                               Bathtub 50 CFM



Example
  

Toilet                                         1.8 M X 2.2 M = 3.69 M2 so 50 CFM is enough as  per Home Ventilation Institute 


Space Area for Lav or wash basin area   3M X 4M = 12M2 OR  129 sq.feet . its mean 130 CFM


Sunday 18 March 2018

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Butterfly valve with tamper switch.

·        Commonly used in fire protection .Dual electronic supervisory tamper switch for connection to fire control panel and auxiliary device (e.g., bell or horn)




·        
     A tamper switch is a mechanical and electrical device connected to a fire protection valve that signals a warning if the valve partially or fully closes. 
   

          Most Common Fire Protection Tamper Switches






      Regardless of the type of tamper switch, they all function similarly. The tamper switch features an actuating unit, usually a lever or cable with a resting position
·         When the valve closes, the actuating unit breaks an electrical circuit which triggers a signal. Think of it like a light bulb: when the light switch is on, a circuit is formed and the bulb shines brightly. When the switch is turned off - or, in the case of a fire protection tamper switch, the valve closes - the circuit is broken. For tamper switches, this broken circuit creates a signal. In most jurisdictions this does not mean the fire alarm goes off, though check with your Authority Having Jurisdiction to make sure of your local rules, but rather the tamper switch sends the signal to a fire control panel which creates a record of the incident.



Butterfly valve with tamper switch.
·         Grooved Butterfly Valve with Tamper Switch - Commonly used in fire protection .Dual electronic supervisory tamper switch for connection to fire control panel and auxiliary device (e.g., bell or horn)
·         A tamper switch is a mechanical and electrical device connected to a fire protection valve that signals a warning if the valve partially or fully closes. Regardless of the type of tamper switch, they all function similarly. The tamper switch features an actuating unit, usually a lever or cable with a resting position
·         When the valve closes, the actuating unit breaks an electrical circuit which triggers a signal. Think of it like a light bulb: when the light switch is on, a circuit is formed and the bulb shines brightly. When the switch is turned off - or, in the case of a fire protection tamper switch, the valve closes - the circuit is broken. For tamper switches, this broken circuit creates a signal. In most jurisdictions this does not mean the fire alarm goes off, though check with your Authority Having Jurisdiction to make sure of your local rules, but rather the tamper switch sends the signal to a fire control panel which creates a record of the incident.


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TYPES OF SUPPRESSION SYSTEMS FIRE FIGHTING


FM-200

FM-200 systems reach extinguishing levels in 10 seconds or less, which stops ordinary combustible, electrical, and flammable liquid fires before they can cause significant damage.

CO2 Fire Suppression Systems

Commercial and industrial facilities can increase on-site safety with CO2 fire suppression systems. This type of systems provides extra fire protection and safety for potential hazards, as they discharge a fire retardant that doesn’t conduct electricity or damage property.

Novec 1230

Novec 1230, fluid is a low global warming potential Halon replacement for use as a gaseous fire suppression agent. Novec 1230 is manufactured by 3M. It is generally used in situations where water from a fire sprinkler would damage expensive equipment or where water-based fire protection is impractical, such as museums, banks, clean rooms and hospitals.
3M Novec 1230 fluid does not deplete ozone and has a global warming potential of 1 over 80 years, equivalent to that of carbon dioxide.

FE13

FE-13TM is the preferred Halon replacement (Halon 1301) in total flooding and inerting applications where its low toxicity provides for improved safety margins, the protected spaces are large, the cylinder storage area is remote from the protected space, or where the temperatures are likely to go below 0°C (32°F). Of the clean agents available, FE-13TM has the lowest toxicity and is the safest for protecting areas where people are present. FE-13TM provides the ultimate in human safety while protecting high-value assets and business continuity with a clean agent.

Foam Fire Suppression Systems

Foam suppression systems are especially useful for buildings that handle anything flammable. The makeup of the foam is water, air and foam concentrate. Together, the mixture creates a blanket and extinguishes the flames by cooling and coating the blaze, eventually smothering the fire.