NOVA 2001 PA/GA System
GAI-TRONICS CORPORATION
SYSTEM SPECIFICATION
FOR NOVA 2001
PUBLIC ADDRESS, ALARM, AND INTERCOM SYSTEM
NEC Systems
for
customer
facility name
project name
location
(Rev 3), 11/13/18
NOVA 2001 PA/GA System
Table of Contents
1.GENERAL......
1.1.Scope......
1.2.Work Included......
1.3.References......
1.4.Submittals......
1.5.Quality Assurance......
1.6.Regulatory Requirements......
2.SYSTEM DESCRIPTION......
2.1.Architecture......
2.2.Equipment Characteristics......
2.3.Central Equipment......
2.4.Main System Features......
2.5.Access Panels......
2.6.Duplication......
2.7.Optional System Features......
3.SYSTEM OPERATION......
3.1.General......
3.2.Public Address Announcements......
3.3.Emergency Notification......
3.4.Supervision......
3.5. Paging Priorities......
3.6. Plant Telephone Access......
4.PRODUCTS AND MATERIALS......
4.1.Central Equipment......
4.1.1.System Cabinet......
4.1.2.Basic Control Cards......
4.1.2.1.System Controller......
4.1.2.2.Matrix Board......
4.1.2.3.I/O Board......
4.1.3Power Amplifier......
4.1.4Power Supply......
4.1.5NOVA Smart Modules......
4.1.6Interfaces......
4.2.Field Equipment......
4.2.1.Access Panels......
4.2.2.Loudspeakers......
4.2.3.Auxiliary Warning Beacons......
4.2.4.Uninterruptible Power Supply......
5 EXECUTION......
5.1. Installation......
5.2 Electrical Protection......
5.3 Environmental Conditions......
5.4. Testing......
5.5. Commissioning And Training......
5.6. Warranty......
5.7. Mean Time To Repair (MTTR)......
(Rev 3), 11/13/18
NOVA 2001 PA/GA System
1.GENERAL
This specification describes the minimum requirements for the design, manufacture and application of the Public Address, General Alarm and Intercom System. The Public Address, General Alarm and Intercom application is a critical system with respect to personnel safety and shall, during an emergency situation, be fully operational to allow safe evacuation of the facility. The NOVA 2001 System architecture and operation exceeds the requirements for a reliable, life safety PA/GA system.
The NOVA 2001 System shall broadcast alarm tones, pre-recorded messages, emergency voice messages and routine voice messages to all or selected areas of the facility, in a reliable and safe manner, by the use of loudspeakers. In areas with a high ambient noise level, alarm tones and flashing lights shall complement voice messages.
Alarms shall be initiated either manually from one of the dedicated access panels or automatically from the Fire and Gas Detection System or Emergency Shutdown System main panel via dedicated hardwired interfaces between the two systems. Voice messages shall be generated either from the microphones at dedicated access panels or from telephones on the facility.
1.1.Scope
The purpose of this specification is to ensure consistency in selection, design and application of the Public Address and Intercom System. This specification defines the requirements of Public Address System equipment to be utilized to allow broadcasts of speech and alarms. Minimum hardware and application software requirements of these systems are defined.
1.2.Work Included
PA/GA system, including controls (central and remote), access stations, amplifiers, loudspeakers, wiring and all specified and/or required appurtenances and accessories.
1.3.References
The following lists the standard bodies referenced in the design of the system:
A.Factory Mutual Engineering and Research System (FM)
B.National Fire Protection Association (NFPA)
C.Occupational Safety And Health Act (OSHA)
D.Underwriters Laboratory (UL)
1.4.Submittals
Based on customer detailed requirements the following shall be supplied:
- System interconnection diagram.
- General arrangement of equipment drawings.
- Emergency power requirements.
- Certificates of compliance.
- Catalog data on all furnished standard equipment, including, but not limited to:
- Central equipment and all internal modules and devices.
- Access panels.
- Field access panels.
- Loudspeakers.
- Beacons.
- Interconnecting cables.
- Technical manuals which contain mounting details and dimensions, installation and connection instructions, operating and maintenance instructions, spare parts list and equipment specifications.
- As-built equipment drawings after construction. The drawings shall be reproducible by the customer.
1.5.Quality Assurance
- All work shall be performed in accordance with this specification, applicable drawings and the best modern practices in design, manufacture and fabrication.
- The system equipment manufacturer shall be ISO 9001 registered for the design, manufacture, contract installation management and service of industrial communication and emergency notification systems. The system manufacturer shall be an experienced firm having 10 years documented experience in the manufacture of similar systems currently demonstrating satisfactory service.
C. The system equipment manufacturer shall have in effect at all times a quality system which shall fully satisfy all the elements of ISO 9001-1987, "Quality Systems-Model for Quality Assurance in Design/Development, Production, Installation and Servicing" and ISO 9004-1987, "Quality Management and Quality System Elements- Guidelines". The quality system shall provide for the planned and systematic control of all quality-related activities performed during design. Implementation of the system shall be in accordance with the system equipment manufacturer’s Quality Manual. The Quality system shall clearly establish the authority and responsibility of those responsible for the quality system. Persons performing quality functions shall have sufficient and well-defined authority to enforce quality requirements, initiate, identify, recommend and provide solutions to quality problems and verify the effectiveness of the corrective action.
1.6.Regulatory Requirements
- The PA/GA system shall be designed and installed in complete conformance to the applicable requirements for deployment as designated by the customer requirements.
- All hazardous locations shall be equipped with certified equipment. Equipment certification shall be through recognized testing laboratories. Equipment shall be labeled according to the appropriate regulations.
2.SYSTEM DESCRIPTION
2.1.Architecture
The PA/GA system shall be divided into one or more zones which can be accessed independently for announcement or alarm broadcasts. Zones can be designated as to function, such as: “work areas” or “accommodations”. Physically, loudspeakers or beacon circuits shall support zones where one or more circuits can be partitioned into a zone. Each loudspeaker or beacon circuit shall be connected to the central equipment for amplification and control/monitor functions.
The calls will be transmitted through loudspeakers installed in the various units and buildings throughout the facility. The system shall allow calls between it and any existing public address system. The system shall be modular in design and shall be easily expandable.
The area coverage will be such that calls will be clearly audible in the paged operating areas and their surrounding space.
Final distribution of loudspeakers over the zones will be finalized during detailed design. Each zone shall be split into loops, where each loop is physically connected to a different amplifier. This configuration ensures that a loss of a single amplifier does not adversely affect paging broadcasts within a zone. The distribution of loudspeakers will be related to area configuration and other operational objectives. Cable distribution throughout the plant area will be designed such that all loops relevant to the same zone separately follow different paths, in order to ensure that cable cuts or shorts will cause a minimum effect on the zone broadcast.
Suitable speech amplifiers shall drive the loudspeaker lines. The zone amplifiers can consist of multiple power amplifiers connected in series (grouped). This connection shall provide further protection by limiting the power loss to the zone in case of failure to one or more power amplifiers of the group.
Access panels shall support operator voice announcement and alarm control operations. Announcements are classified as “routine” or “emergency”, where an emergency announcement shall take precedence over all other audio broadcasts. Announcements shall be pre-configured to broadcast in designated zones. A zone selection feature shall enable users to direct routine announcements to selected zones. Alarm operations shall initiate the broadcast of alarm tones or pre-recorded messages to pre-configured designated zones. Access panels shall be connected to the central equipment and accorded an access priority for announcements. Alarms shall be accorded a broadcast priority that gives the most critical alarm precedence.
Each access panel shall be able to:
-Address a call to one or multiple zones.
-Transmit a general call to the whole area activating all zones simultaneously. The speech messages shall be announced by an automatically generated pre-announcement attention signal.
The access panels shall be interlocked to prevent interference on the call in progress for the same zone or group of zones. In addition, all audio signals to be broadcast shall be able to be configured with different levels of priority (up to 99 levels of priority) in order to allow each signal to override the others where appropriate and where specified in accordance with specific site requirements.
The central equipment shall support external interfaces for telephone, radio or other audio source interconnection for routine broadcast to designated zones. One or more interfaces shall be supported, up to a maximum of 8. A feedback elimination feature shall suppress any audio coupling between an audio source and nearby loudspeaker. Each external interface shall be accorded an access priority for announcements.
Additional interfaces shall support connectivity to external alarm or monitor systems to facilitate the remote control of alarm operations. Alarms shall be accorded a broadcast priority that gives the most critical alarm precedence. Furthermore, the system can broadcast different audio signals to different zones simultaneously.
Call back intercom features in the system shall be provided as optional, where required.
It shall be possible to initiate a general paging call from authorized telephones. One two-wire telephone interface shall be connected to a PABX trunk line (to be dedicated for this purpose). The interface shall provide 24VDC supply on the two wires respectively with 600-ohm impedance. If additional pre-configured zone paging telephone calls are desired, additional telephone interface boards shall be utilized (one for each zone configuration, up to eight).
If access to the PA system is denied due to priority configuration, the PA system shall return a busy signal to the telephone caller.
The audio matrix, through a fully programmable digital delay, shall provide an acoustical feedback suppressor to prevent feedback or anti-Larsen effect from microphones, telephones, or radios.
Integrated test equipment shall be incorporated into the central equipment to identify faults on the external loudspeaker loops and on individual speakers.
Remote speaker tapping facilities shall be provided to allow system operators to remotely and manually change the speaker settings according to plant requirements. This facility shall be provided by the Master and Remote Speaker Control Modules as a fully integrated part of the system.
2.2.Equipment Characteristics
The system shall provide facilities for the control and management of a high integrity Public Address and Alarm System specially designed for industrial environments where advanced technology coupled with very high reliability is demanded.
The materials used shall have characteristics suitable for the installation site and for the service required. The equipment shall be fully solid state type, multi-microprocessor based and programmable.
The system shall be software program controlled to enable easy system configuration and self- diagnostics, as well as future software upgrade. Configuration of the system shall be achieved by software for maximum flexibility. A user friendly setup and checking routine shall provide system management and programming through interfaces with dedicated alphanumeric keyboards, LCD displays and built-in Personal Computers, which enables an operator using a system controller to implement quick commissioning and fault finding functions. The use of these methods shall allow adjustments to be easily made after the system is installed without resulting in modifications to the system wiring.
The access panels shall be microprocessor based or PC based and connected to the central control cabinets using up to five individually twisted and shielded pairs.
The components shall be used within 75% of both the dissipation and maximum ratings specified by the system equipment manufacturer.
Facilities to indicate the status of the main system units shall be provided. Such indications shall show any faulty unit for easy replacement.
Intelligent loudspeaker subsystems shall be provided as a fully integrated part of the system, allowing remote tapping capabilities.
The system shall be provided with standard serial interface RS 232 and Ethernet 10 base T (LAN physical layer and TCP/IP protocol) for local or remote access for supervision and maintenance activities (diagnostics with a graphic mimic panel, status and logging of events). A Pentium class PC shall be utilized operating on Windows™ NT 4.0 (latest revision) for the mimic panel.
2.3.Central Equipment
The central equipment shall consist of one or more cabinets. The cabinets shall house all amplification, control and monitoring equipment necessary for the reliable operation of the PA/GA system. External connections shall be provided for loudspeaker and beacon circuits and external interfaces shall be supported within the central equipment cabinet(s). The central equipment shall support integral facilities to test the system and provide status information to facilitate repair or replacement of possible failed circuits.
Cable entry to the central equipment cabinets will be via top and/or bottom gland plates, which will be provided by the supplier, undrilled. Several cabinet formats (e.g., front-entry, swing-frame) shall be supported to meet the customer’s specific installation requirements.
2.4.Main System Features
Configuration of Alarm Tones and Priorities
Alarm tones and priorities shall be configured to each customer’s requirement so that particular tones are generated under different conditions. Higher priority alarms shall be programmed to override those of a lower priority. The customer shall specify alarm tone frequencies, types, duration, external contact specifications and alarm conditions, during the detail design phase.
Configuration of Announcement Priorities
Announcements from select sources shall be configured to override others.
Pre-Announcement Tones
Single chime, double chime or triple chime pre-announcement tones shall be generated under software control, with the possibility to associate these different chimes to different sources and activation types. For example, typically a single chime precedes a zone call; a double chime precedes a general (all zones) call and a triple chime precedes an emergency general call.
Zone Selection of Announcements and Alarm Tones
Announcements and alarm tones may be set and distributed to groups of speakers (i.e. one zone, a group of zones or all zones). An overall alarm and/or announcement shall be allowed to override individual zone alarms and/or announcements, depending on the configured priorities. The configurations of groups of zones shall be changed via software without the need to alter the wiring of either the audio matrix or the speaker loops.
Gain Control of Alarms and Announcements
Alarms and announcements shall be individually configurable to different volume levels, which shall allow an alarm to be muted while a broadcast is made and then increased back to its original level afterwards.
Pre-recorded Digital Tones and Messages
The microprocessor shall control the generation of individual signaling and alarm tones, as well as bell tones and pre-recorded digital speech messages. The system shall be provided with alarm and test tones, as well as bi- or multilingual pre-recorded announcements.
Recording and playing of pre-recorded messages and alarm tones shall occur in automatic and/or manual mode, with the capacity of up to 99 tones and *messages in standard configuration. The broadcasting shall be in accordance with programmable priorities. The System Controller shall be capable of broadcasting a tone, a pre-recorded message or a combination of both (one at a time).
Messages and alarm tones shall be fully configurable, with virtually unlimited capacity of expansion. Each message and/or tone or queuing of both can be triggered by any possible combination of opto-isolated inputs, either by direct command from the access panel keyboard or by contact closures from other systems (i.e. fire and gas detection systems), in accordance with the Customer’s requirements. Messages shall be able to be recorded by the user through the system equipment.
* The number of messages is determined by the total memory available; i.e. in standard configuration, this memory can handle up to 24 hours of message time. The messages are recorded and played at FM radio quality.
System Recovery
Each element of the system shall automatically reset, in case of failure, and recall the last valid configuration, through a distributed “watch-dog” facility.
Microprocessor Based Audio Cross Point Matrix
The system shall include a microprocessor based audio matrix, with true digital cross-point switching. All functions shall be digitally controlled and processed, for very high quality audio signals (processed at CD quality levels). The system software shall include capability to reprogram the audio I/O configuration matrix without changing wiring. The audio matrix shall provide the following features (independent for each input): gain control, separate treble and bass tone controls, separate scratch and rumble filters, digital control; boost facility to increase the output level to +8dB (output level up to +14dB), acoustic feedback suppression facility and built-in alert tone generator (adjustable among single, double or triple tone) shall be provided.
Power Amplifiers
Power amplifiers are available in 250W output with 120VAC 60Hz input. Power amplifiers shall be provided with the following features: low idle current, LED indicator for maximum peak output power, built-in thermal protection, output short circuit protection, and an AC main circuit breaker.
Network Connection Facility
Data links between remote units shall be provided through standard serial interface RS 232/RS 485 or LAN interface Ethernet 10 base T (LAN physical layer and TCP/IP protocol). The maximum distance for RS 485 shall be 1 mile (1600 meters), while the Ethernet distance shall be related to the media used. Others shall provide the Ethernet network.
In any case, there shall be the capability to use any kind of transmission system such as optical fiber systems, radio systems (terrestrial), data transmission systems (leased line, PSTN, ISDN), as alternatives to hardwired copper direct transmission system. This configuration shall allow network system capabilities for longer distances.