Page 329 - International safety guide for oil tankers and terminals

SAFETY AND FIRE PROTECTION

Emergency reporting can also be achieved by using a dedicated
emergency telephone system. Additionally, manual fire alarm stations can
---ใช้เพื่อการศึกษาเท่านั้น---
be installed instead of, or to supplement, the telephone reporting system.

When a dedicated telephone system is used, a special telephone should
should be capable of being heard in all areas of the terminal regardless์นาวี
be installed in the control room or supervisory station to receive
emergency calls. The telephone should be capable of receiving incoming
calls only and extensions should also be provided at other locations which
have preliminary emergency responsibility.

The general alarm system should, as a minimum, consist of one or more
air horns, electric horns or steam whistles which are strategically located
งานห้องสมุด ศูนย์ฝกพาณิชย
to ensure maximum coverage throughout the terminal. The alarm should
be clear, audible and distinctive from signals used for other purposes, and

of background noise.

Auxiliary alarm devices should be provided for indoor locations or remote
areas where the general alarm cannot be heard. These alarms may be
bells, or air or electric horns. Whichever devices are provided, they should
be the same throughout the facility and should be distinct from other
warning devices.

ึ
19.3.4 Alternative Alarm and Signalling System Design
Although a coded alarm system is generally preferable for large terminals,
a non-coded, announcement type system can be used. Either system can
consist of telephones or manual fire alarm stations at strategic locations.
Coded manual fire alarm stations can be connected to the general alarm
to sound a coded signal without manual intervention. Non-coded stations
can be arranged to show fire location on a fire alarm indicator in the
central control room or supervisory station so that the attendant can
energise the code transmitter. Both the coded or non-coded
announcement type systems should be controlled from a central fire
alarm control panel.

19.3.5 Interface Between Detection Systems and Alarm or
Fire Extinguishing Systems – Circuit Design
Actuation relays, where required between detectors and alarm or
extinguishing systems, should consist of closed loops that are normally
de-energised, and that require an input of sufficient electrical energy to
activate the alarm or extinguishing system. This arrangement will prevent
a false activation of an alarm or extinguishing system upon loss of power.
It also allows for provision of a separate fault signal upon power loss.

19.3.6 Electric Power Sources

Electric power should be available from two highly reliable sources. The
usual arrangement is an alternating current (AC) primary power supply,
with a trickle charger supplying an emergency battery system for standby
power. In some locations, authorities may require an engine driven
generator as a secondary power supply in case the primary supply fails.

The capacity of secondary power supplies varies with the type of alarm
system and the requirements of local regulatory authorities. For local or
proprietary alarm systems where signals are registered only at the

© ICS/OCIMF/IAPH 2006 295