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5. Services
5.1 Electrical systems
(a) Except as provided in this Subsection, electrical wiring and installations shall conform to the CSA C22.1, Canadian
Electrical Code, Part I.
(b) Power supply cables may be installed under a raised floor provided the branch circuit power supply conductors to receptacles
are in metallic raceways or metal-sheathed cables.
(c) All exposed wiring and cables in plenum and underfloor spaces shall have a flame test classification of FT4 when tested in
conformance with CSA C22.2 No. 0.3, "Test Methods for Electrical Wires and Cables".
(d) Service transformers are not permitted in the computer room unless they are of the dry type or a type filled with dielectric
medium having a flash point of 300oC or higher.
(e) Except for lighting and smoke detection systems, a disconnecting means shall be provided to disconnect power to all EDP
equipment in the computer room. The disconnecting means shall be controlled from locations readily accessible to the operator at the
main egress door of the computer room, and provided with cover plate to prevent accidental operation.
(f) Uninterruptible power supply system (UPS) dedicated to the EDP equipment shall be located away from other building hazards
and in a dedicated enclosure having a fire-resistance rating equal to the fire separation provided for the computer room, except
that UPS system with sealed type batteries are permitted to be located within the computer room.
(g) An enclosure for unsealed type battery bank associated with a UPS system shall be used for no other purpose. It shall be
ventilated as required by CSA C22.1 for the type of battery used, and the floor and walls shall be water tight and resistant to the
battery electrolyte used.
(h) Where the EDP equipment and the UPS system are in different fire compartments, the electrical conductors connecting the EDP
equipment and the UPS system shall be protected against fire exposure to ensure continued operation for a duration of at least 1
h.
(i) Emergency lighting to an average level of 10 lx measured at the floor level shall be provided for the computer room for a
duration in conformance with the NBC.
5.2 HVAC systems
(a) HVAC systems shall conform to the requirements of the NBC, Part 6.
(b) Independent air conditioning systems shall be provided for the computer room, separate from service to other areas, where
practicable.
(c) Air ducts serving other areas should not pass through the computer room. Where it is not practicable to re-route such ducts,
they shall be enclosed in a construction having a fire-resistance rating equal to that of the computer room.
(d) Air filters for use in an air conditioning system shall be of non-combustible materials or conform to the requirements of
Class 1 Filters in accordance with CAN4-S111, "Standard Method of Fire Tests for Air Filter Units".
6. Fire protection
6.1 Fire extinguishers
Carbon dioxide extinguishers with a minimum rating of 5-B,C shall be provided in the computer room such that all EDP equipment is
within 9 m travel distance of the extinguisher.
6.2 Fire alarm systems and smoke detection systems
Note:
This subsection applies only to EDP equipment requiring Level 2 and Level 3 protection.
(a) A fire alarm system, designed, installed and maintained in accordance with chapter 3-4, Standard for fire alarm systems,
shall be provided for the building.
(b) Smoke detectors, connected to a local annunciator, shall be provided in the computer room.
(c) Smoke detectors shall be located throughout the computer room, including rooms housing the uninterruptible power supply
system, underfloor spaces and ceiling spaces. The location of detectors in all concealed spaces shall be identified by the local
annunciator.
(d) The operation of any smoke detector or fire detector in the computer room shall:
(i) cause a visual and audible signal at the local annunciator in the computer room; and
(ii) automatically transmit a signal to the building fire alarm control panel in accordance with chapter 3-4, Standard for fire
alarm systems.
(e) The local annunciator in (b) shall be located at or near the main egress door of the computer room.
(f) Where a local control panel is provided for the control of the smoke detectors within the computer room, the power to the
control panel shall be supplied from separate branch circuit(s) independent from the other branch circuits supplying power to the
computer room.
6.3 Sprinkler systems
Note:
This subsection applies only to EDP equipment requiring Level 2 and Level 3 protection.
(a) Except as otherwise indicated in this Subsection, sprinkler systems protecting computer rooms shall be designed, installed
and maintained in accordance with FC No. 403, "Standard for Sprinkler Systems".
(b) For EDP equipment located in buildings of non-combustible +M construction, a sprinkler system shall be provided for the
computer room. (See appendix A)
Note:
For EDP equipment located in buildings of combustible construction, the entire building shall be sprinklered as per subsection
3.2.
(c) Sprinklers may be omitted in an underfloor space constructed in accordance with this standard.
(d) The sprinkler system for the computer room shall be interconnected with the building fire alarm system and so arranged that
the operation of any sprinkler within the computer room shall:
(i) cause a visual and audible signal at the local annunciator in the computer room;
(ii) automatically transmit a signal to the building fire alarm control panel in accordance with chapter 3-4, Standard for fire
alarm systems;
(iii) shut down the power to the EDP equipment; and
(iv) shut down the air handling system for the computer room.
(e) The sprinkler system for the computer room shall be provided with a flow switch, a test pipe and an indicating control valve
located outside of the room. The locations of the test pipe and the control valves shall be marked and identified.
6.4 Halon 1301 systems
(See appendix A)
Note:
This subsection applies only to EDP equipment requiring Level 3 protection.
(a) A Halon 1301 system or other acceptable gaseous fire suppression system shall be installed in the computer room where a fire
risk analysis concludes that, in addition to sprinkler protection, a gaseous fire suppression system is necessary to minimize
potential fire damage to the EDP equipment.
(b) Plans and specifications shall be submitted to the FC for review in accordance with chapter 3-2, Fire protection standard for
design and construction.
(c) Upon completion of the installation of a Halon 1301 system, the contractor shall:
(i) advise the FC in writing that installation has been completed, the piping and associated equipment have been tested for
mechanical tightness and freedom from dangerous pipe movements during discharge, and the system is in operating condition and
conforms to the requirements of the specifications;
(ii) report and identify all unclosable openings and sources of agent loss; and
(iii) provide a copy of the operating manual and schematic layout of the system in the computer room.
(d) Before acceptance of the installation is granted, the completed system shall be tested by the contractor in accordance with
the procedures described in NFPA Standard No. 12A, "Halon 1301 Fire Extinguishing Systems", including procedures described in the
appendix A of that standard.
(e) Except as provided in this Subsection, Halon 1301 systems shall be designed, installed and maintained in accordance with NFPA
Standard No. 12A, "Halon 1301 Fire Extinguishing Systems".
(f) Halon 1301 systems shall be designed and installed to provide a 5% concentration of Halon 1301 agent within 10 s of actuation
and held for:
(i) 10 min. for total flood systems;
(ii) 1 min. for individual EDP equipment.
(g) Smoke detectors shall be installed within the spaces protected by total flood systems. The location of detectors concealed in
underfloor and ceiling spaces or within computer units shall be identified by the local annunciator.
(h) Except as permitted in (j) for manual activation, total flood systems shall be actuated by the smoke detectors in the
computer room.
(i) The operating sequence for the activation of the total flood system shall be as follows:
(i) The operation of one smoke detector shall activate the visual and audible signals as described in 6.2(d); and
(ii) The operation of two or more smoke detectors in a protected area or the operation of a manual station shall:
(a) cause a visual and audible signal at the local annunciator in the computer room,
(b) cause a distinctive signal throughout the computer room,
(c) automatically transmit a signal to the building fire alarm control panel in accordance with chapter 3-4, Standard for fire
alarm systems,
(d) shut down the power to the computer room except as permitted by (j),
(e) shut down the air handling system in the computer room, and
(f) discharge the Halon gas after a period of not more than 30 s from actuation of the second smoke detector and not more than 5
s from the operation of a manual station.
(j) EDP equipment linked with special operational equipment such as that for air traffic control or an EDP equipment under
continuous surveillance of a qualified operator may be permitted to continue to operate until manually shut down. Such an
arrangement shall have the approval of the administrative official, and may include the manual operation of a Halon 1301 system.
(k)
(i) Means to manually actuate the total flood system shall be provided at a readily accessible location at or near each egress door
of the computer room.
(ii) All manual stations that are used to release Halon gas shall be properly identified. Where manual stations for more than one
system are provided in close proximity, they shall be clearly marked as to which area they affect.
(iii) Manual stations shall be provided with tamper covers or shall be of a type requiring double action for activation.
(l)
(i) When an abort switch is provided for the system, the switch shall be clearly marked and identified as to its use, and shall
be installed so as not to override any manual station. The abort switch shall have a different colour from that of the manual
station.
(ii) The operation of any abort switch shall cause a visual and audible signal at the local annunciator.
(m) Local application systems for the protection of individual computer units or similar applications shall be designed and
installed to be actuated manually and by fire detectors located within the EDP equipment or within the enclosed space in which the
equipment is located.
(n) (i) Computer rooms that are protected by Halon 1301 systems shall be provided with discharge indicator and signage outside
the room indicating that it is so protected.
(ii) Containers of Halon gas shall be either located within the computer room or in an area protected by a fire suppression
system and accessible only to authorized personnel.
(iii) Rooms outside of the computer room used for the storage of Halon containers shall not be used for other purposes.
(iv) Unless the Halon gas containers are clearly visible within the computer room, the location of the containers shall be marked
and identified.
6.5 Other fire safety measures
(a) Where the computer room has a raised floor, "floor panel lifter" shall be provided for emergency use near each egress door in
an accessible location within the computer room.
(b) A sufficient number of waterproof and flame-resistant treated covers or tarpaulins to protect the EDP equipment and a
sufficient number of mops or squeegees to reduce water damage, shall be provided and kept outside of, but immediately accessible to,
the computer room.
7.1 General
The general emergency procedures to be followed shall be in accordance with the requirements of chapter 3-1, Standard for fire
safety planning and fire emergency organization.
7.2 Pre-planning for continued operations
The effect upon continuity of operations for each EDP equipment should be determined and when necessary arrangements made for the
use of alternative facilities, including the transportation of personnel, data and supplies.
7.3 Fire safety plan
(a) A fire safety plan for the computer room shall be prepared and posted.
(b) The following specific duties, in addition to chapter 3-1, Standard for fire safety planning and fire emergency organization,
shall be assigned to designated personnel:
(i) assure the safe egress of personnel from any area of danger from fire or other emergency;
(ii) ensure that power to the computer room has been shut off either automatically or manually subject to operational
requirements;
(iii) ensure that the air handling system, when a separate air conditioning system is provided for the equipment area, has been
shut off either automatically or manually;
(iv) conduct fire fighting operations with special equipment if safe to do so; (v) direct the fire department to the scene of the
fire and to stand by to aid and provide information;
(vi) direct the removal and preservation of equipment and records endangered by fire;
(vii) undertake salvage operations, including the use of waterproof covers or tarpaulins, to minimize damage due to fire, smoke
and water; and
(viii) notify the FC of the incident in accordance with FC No. 11, "Standard For Investigating and Reporting of Fires".
7.4 Personnel training
To ensure that the fire safety plan described in 7.3 is effective, the designated personnel shall receive regular training on the
necessary actions to be taken in the event of a fire emergency. have been promulgated on the provision of clothing.
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