Battery and Chargers Rooms (hydrogen)

Battery and Chargers Rooms (hydrogen)

Gas Detecting Systems in battery and chargers rooms, which facilitate monitoring of the air in the work area (H2 monitoring)

Batteries are very dangerous, because they involve chemical reactions of a secondary type, i.e. electrolysis of water. Substances released from batteries include hydrogen gas (H2).

Hydrogen, in terms of the physiology, is a nontoxic inert gas, which, only at excessively high concentrations, impairs the well-being. It is 14 times lighter than air. It is harmful to humans due to reduced O2 content in air.

In battery rooms, where the devices are charged, hydrogen is very hazardous. When mixed with air, hydrogen produces combustible gas, which is enough explosive hazardous.

To eliminate the increased risk to the life and health of employees, a hydrogen-air mixture shall be removed in advance by the exhaust ventilation system. For this purpose, you shall use gas detecting instruments of a voltage free output relay contact type.

Documents and Standards

The main objects to control the degree of exceeding the hydrogen MPC, are:

- Enterprises premises comprising batteries, hydrometeorological services, and telecommunications workers;

- power plants and smaller substations;

- battery chargers rooms, etc.

The main regulatory documents and standards determining the expediency of use of stationary type gas detectors in battery and chargers rooms are:

- The TU-GAZ-86 contains basic requirements for the installation of alarm sensors and gas detectors;

- The VSN 64-86 contains guidelines on installing signalling devices and gas detectors with a control function of pre-explosive and most permissible concentrations of chemical substances in the air of the production premises.

Based on the requirements of the document, the quantity of sensors related to hot gases is determined based on the following calculations: 1 sensor per 100 m2. In this case, at least one sensor per one room is used.

- The UDC 621.3.07.077 contains design instructions on traction, and starter batteries charging stations;

- The Electrical Installation Code includes the rules for the electrical installations;

- The RTOEIC includes the Rules of Technical Operation of Electric Installations of Consumers.

Safety Precautions

The MPC of hydrogen in the air of the working area largely influences enterprises employees’ safety in the battery rooms. The constant automatic monitoring of the pre-explosive concentrations of hydrogen in the air of the production premises is necessary. For this, you shall use stationary type gas detectors.

The proposed options from the “INKRAM” LLC Research and Production Company are as follows:

- The VD1.0 Converter version for measurement along with an alarm unit designed to control the ACM, the version protected from explosions making up the SKVA-01M and SKVA-03 multi-channel systems intended for gas detection.

The advantage of gas detecting systems is the ability to provide for 1 to 999 channels based on the size of the remote sensors. This allows you to cover the largest possible area in order to monitor air.

- The VD1.0 explosion-proof version converter for measurements is supplied along with the Power Alarm Unit (PAU) as part of the SKVA-01-1.E Gas Detecting System, from one channel.

This system is able to connect to a PC and transmit information within the RS-485 digital interface and alarm control including various external devices.

- The A220, A320B320 and C320 transducers aimed at the measurements, are independent gas detectors.

The main advantage of these devices is the ability to be used in small autonomous rooms.

The “INKRAM” LLC Research and Production Company specialists will provide expert assistance in choosing gas detecting systems.

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