Battery room

Typical industry practice is to provide an explosionproof rated exhaust fan in the exhaust system for the battery room and classify the exhaust duct and a radius of 1.5 meters (5 ft.) from the exhaust vent outlet at Div. I, Class 2 Group B. The light switch for the facility should be located outside the battery room. 

Where drainage provisions are provided to the battery room, the fluid should first collect into a neutralizing tank before entering the oily water sewer system (OWS). 

Where sealed and unserviceable batteries are used, these requirements do not apply since no free hydrogen is released. 

Fire detection capability is considered optional as the batteries themselves have little combustible materials and only a limited amount of cabling or charging equipment is normally provided. Therefore a fire incident is considered as having a very low probability of occurring. 

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Halon/C02 Pressure-reducing set Press, red. and desuperheating set Ventilation Turbine hall Boiler house Switchrooms Battery room Water-treatment room Admin. 

Emergency or Uninterruptible Power Supply Facilities - Battery room exhaust systems (if unsealed batteries are present)... 

Restrooms, laboratories, and uninterruptible power supply (UPS) systems and battery rooms should have once through ventilation. Laboratories and battery rooms should only be accessed from the outside. 

Separate rooms should be provided for I/O wiring panels, the process distributed control computer hardware and related systems. Motor Control Centers (MCC), UPS, and battery rooms. A minimum 1-hour fire-rated partition wall should be provided to ensure isolation of I/O and MCC areas from control rooms. 

Refs l)G.W.Vinal,"Srorage Batteries, Wiley, NY(1940) 2)G.W.Jones et al, USBurMines Tech Paper 6l2,pp 1—10(1940) CA 34, 8284(1940)(Danger of explosion in storage battery rooms due to evolution of hydrogen and formation of explosive mixtures with air) 3 )J. Re illy W.N.Rae "Physico-Chemical Methods Van No strand, NY( 1943), pp 228—36 4)Kirk Othmer 2(1948),pp 340—60 under Batteries (17 refs) 5)Perry(l950),pp 1792—3... 

In practice it is therefore essential to ensure that the temperature within the battery room or cabinet remains reasonably constant and as close to 25°C as possible, the lower the temperature... 

The batteries used for the emei ency supply should be suitable for this purpose. Motor vehicle batteries are not suitable for emergency lighting applications, except in the starter system of motor-driven generators. The fuel supply to a motor-driven generator should be checked. The battery room of a central battery system must be well ventilated and, in the case of a motor-driven generator, adequately heated to ensure rapid starting in cold weather. 

Are spill kits and battery safety boards displayed in all battery rooms Are employees trained and advised in these procedures ... 

During Cold Standby, the exhaust ns provide ventilation to the buildings. The supply fans are not used. Addition y, the exhaust ns serving the battery rooms remain in service as long as batteries are present. 

Indian BWRs were designed to fire standards of 1960s. Hydrogen detection has been provided in primary containment and main DC battery rooms. Many more sensors have been introduced at locations such as RB, TOT, etc. 

ANSI/AMCA 210, 211 and 300 are used for the battery room exhaust fans... 

The VBS, which provides ventilation and cooling to the main control room envelope, safety significant instrumentation and control rooms, safety significant equipment rooms, and safety significant battery rooms. 

The Nuclear Island nonradioactive ventilation system (VBS) serves the MCR, control support area (CSA), dc equipment rooms, I C rooms, electrical penetration rooms, battery rooms, remote shutdown room, reactor coolant pump trip switchgear rooms, adjacent corridors, and the PCS valve room during normal plant operation. 

Exhausts air from the Class IE battery rooms to limit the concentration of hydrogen gas to less than 2 percent by volume. 

Provides smoke removal capability for the Class 1E electrical equipment rooms and battery rooms... 

Sealed valve-regulated lead acid (VRLA) batteries are often used in operations in enclosed spaces where the emissions from diesel gensets are unacceptable. Battery rooms, which are literally rooms full of batteries for UPS, is a common site in buildings such as data centres and telecommunications facilities. The sealed batteries are scaled by linking them together in series, known as a string , with the number depending on the amount of power required and size of the batteries. 

Enclosed locations that may be susceptible to build-up of combustible gases are typically provided with ventilation systems that will disperse the gases or provide sufficient air changes to the enclosures such that leakages will not accumulate. Typical examples include battery rooms, gas turbine enclosures, offshore enclosed modules, etc. 

Battery rooms are provided for backup and uninterruptible power supplies (UPS) for process control functions. They are usually provided at or near the facility control room or electrical switchgear facilities. Battery rooms should be provided with ventilation to limit the concentration of hydrogen to 1% by volume. For further information refer to ANSI/IEEE 484, Recommended Practice for Installation Design and Installation of Large Lead Storage Batteries for Generating Stations and Substations. 

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