Tải bản đầy đủ
AS 1851.12—1995 MAINTENANCE OF FIRE PROTECTION EQUIPMENT - GASEOUS FIRE EXTINGUISHING SYSTEMS

AS 1851.12—1995 MAINTENANCE OF FIRE PROTECTION EQUIPMENT - GASEOUS FIRE EXTINGUISHING SYSTEMS

Tải bản đầy đủ

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

This Australian Standard was prepared by Committee FP/11, Fire Extinguishing
Systems. It was approved on behalf of the Council of Standards Australia on
12 December 1994 and published on 5 March 1995.

The following interests are represented on Committee FP/11:
Australian Chamber of Commerce and Industry
Australian Construction Service—Department of the Arts and Administrative
Services
Australian Fire Authorities Council
Australian Fire Protection Association
Commonwealth Fire Board
Defence Department, Australia
Fire Protection Industry Association of Australia
Fire Trainers Association of Australia
Insurance Council of Australia
New Zealand Fire Equipment Association
New Zealand Fire Protection Industry Contractors Association
Railways of Australia
Society of Fire Protection Engineers Australasian Chapter
Telecom Australia

Review of Australian Standards. To keep abreast of progress in industry, Australian Standards are subject
to periodic review and are kept up to date by the issue of amendments or new editi ons as necessary. It is
important therefore that Standards users ensure that they are in possession of the latest edit ion, and any
amendments thereto.
Full details of all Australi an Standards and related publications will be found in the Standards Australia
Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australi an
Standard’, which subscribing members receive, and which gives details of new publications, new editi ons
and amendments, and of withdrawn Standards.
Suggesti ons for improvements to Australian Standards, addressed to the head off ice of Standards Australia,
are welcomed. Noti fi cati on of any inaccuracy or ambiguity found in an Australian Standard should be made
without delay in order that the matter may be investigated and appropriate action taken.

This Standard was issued in draft form for comment as DR 93173.

AS 1851.12—1995

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

Australian Standard
Maintenance of fire protection
equipment
Part 12: Gaseous fire extinguishing
systems

First publi shed as AS 1851.12—1995.

PUBLISHED BY STANDARDS AUSTRALIA
(STANDARDS ASSOCIATION OF AUSTRALIA)
1 THE CRESCENT, HOMEBUSH, NSW 2140
ISBN 0 7262 9563 9

AS 1851.12— 1995

2

PREFACE
This Standard was prepared by the Joint Standards Australia/Standards New Zealand
Committee FP/11 on Fire Extinguishing Systems as an Australian Standard to provide
suitable requirements for the regular maintenance of gaseous systems.
The objective of this Standard is to provide users of gaseous fire extinguishing systems with
the necessary requirements needed in the regular maintenance of such systems.
Gaseous systems may contain control and indicating equipment (CIE) that complies with
AS 1603.4, Automatic fire detection and alarm systems, Part 4: Control and indicating
equipment, and is installed in accordance with AS 1670, Automatic fire detection and alarm
systems— System design, installation, and commissioning. The maintenance provisions of this
Standard therefore overlap those for control and indicating equipment contained in
AS 1851.8, Maintenance of fire protection equipment , Part 8: Automatic fire detection and
alarm systems. Where the CIE for a system forms part of a fire indicator panel (FIP) serving
other zones as well as the protected enclosure, then maintenance is in accordance with
AS 1851.8 and this Standard can be undertaken simultaneously without the need for
duplication.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

This Standard has some variance in text from its sister document, AS 1851.8, due to the
change in the document style procedures of Standards Australia.
The term ‘informative’ has been used in this Standard to define the application of the
appendix to which it applies. An ‘informative’ appendix is only for information and guidance.

 Copyri ght STANDARDS AUSTRALIA
Users of Standards are reminded that copyri ght subsists in all Standards Austr alia publi cati ons and software. Except where the
Copyri ght Act all ows and except where provided for below no publications or software produced by Standards Australi a may be
reproduced, stored in a retr ieval system in any form or transmitt ed by any means without prior permission in writ ing from
Standards Australi a. Permission may be conditi onal on an appropriate royalt y payment. Requests for permission and information on
commercial soft ware royalti es should be dir ected to the head off ice of Standards Australi a.
Standards Austr alia will permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively
in-house by purchasers of the Standard wit hout payment of a royalty or advice to Standards Austr alia.
Standards Austr alia wil l also permit the inclusion of its copyright material in computer soft ware programs for no royalt y
payment provided such programs are used exclusively in-house by the creators of the programs.
Care should be taken to ensure that materi al used is from the current editi on of the Standard and that it is updated whenever the
Standard is amended or revised. The number and date of the Standard should therefore be clearly identif ied.
The use of materi al in print form or in computer software programs to be used commercially, with or without payment, or in
commercial contracts is subject to the payment of a royalty. This policy may be vari ed by Standards Austr alia at any ti me.

3

AS 1851.12— 1995

CONTENTS

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

Page
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4
4
4

SECTION 2 GENERAL REQUIREMENTS
2.1 MAINTENANCE OF INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 RECORDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5
5
5

SECTION 3 MAINTENANCE PROCEDURES
3.1 WEEKLY . . . . . . . . . . . . . . . . . . . . . .
3.2 MONTHLY . . . . . . . . . . . . . . . . . . . .
3.3 SIX-MONTHLY . . . . . . . . . . . . . . . . .
3.4 YEARLY . . . . . . . . . . . . . . . . . . . . . .

6
6
7
7

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

.
.
.
.

SECTION 4 MAINTENANCE DOCUMENTATION
4.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 RECORD SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
APPENDIX A

SYSTEM— LOGBOOK REPORT . . . . . . . . . . . . . . . . . . . . . . . . . 11

AS 1851.12—1995

4

STANDARDS AUSTRALIA
Australian Standard
Maintenance of fire protection equipment
Part 12: Gaseous fire extinguishing systems
S E C T I O N

1

S CO P E

A N D

G E NE R A L

1.1 SCOPE This Standard sets out requirements for the regular maintenance of gaseous
fire extinguishing systems, designed and installed in accordance with the appropriate
installation Standard. Regular maintenance includes inspection and testing procedures.
The ‘gas’ shall be referred to as the ‘extinguishant’ in this Standard.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

1.2 REFERENCED DOCUMENTS The following documents are referred to in this
Standard:
AS
1210

Unfired Pressure Vessels (known as the SAA Unfired Pressure Vessels Code)

1603
Automatic fire detection and alarm systems
1603.4 Part 4: Control and indicating equipment
1670

Automatic fire detection and alarm systems — System design, installation, and
commissioning

1851
Maintenance of fire protection equipment
1851.8 Part 8: Automatic fire detection and alarm systems
2030

The approval, filling, inspection, testing and maintenance of cylinders for the storage
and transport of compressed gases (known as the SAA Gas Cylinder Code)
2030.1 Part 1: Cylinders for compressed gases other than acetylene
2484
Fire— Glossary of terms
2484.2 Part 2: Fire protection and firefighting equipment
4214
Gaseous fire extinguishing systems
4214.1 Part 1: General requirements
1.3 DEFINITIONS For the purpose of this Standard, the definitions given in AS 1603.4,
AS 1670, AS 2484.2, AS 4214.1 and the Standard appropriate to the extinguishant used
apply.

COPYRIGHT

5

S E C T I O N

2

G EN E R AL

AS 1851.12—1995

R E Q UI R E M E N T S

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

2.1 MAINTENANCE OF INSTALLATION It is essential that regular maintenance of
gaseous systems is undertaken to ensure an operational condition and to prevent leakage or
inadvertent discharge.
Calibrated test equipment and recognized procedures shall be used.
Regular maintenance is classified into four levels which shall be performed as follows:
(a) Weekly, only where the appropriate authority deems it necessary.
(b) Monthly on all systems.
(c) Six-monthly on all systems that do not incorporate means to determine container
contents.
(d) Yearly on all systems.
NOTES:
1 Maintenance should be carried out only by persons having qualifications and experience
suitable for the particular work in which they are engaged.
2 The manufacturer may have additional requirements beyond that specified in this Standard.
3 The arrangements for maintenance should ensure that a person is available on call at all times
to provide service in the event of any fault developing at the installation.

2.2 RECORDS All system attendances, e.g. inspection, testing, service and maintenance
procedures, shall be systematically recorded by date with signed entries in the logbook
maintained on the site (see Clause 4.2). In addition, a copy of all attendance records should
be forwarded to the owner or the owner’s agent. The property owner or occupier shall
maintain a record of maintenance carried out on the gaseous systems. The maintenance record
system shall contain the classification (weekly, monthly, six-monthly or yearly) and date of
maintenance, any defects and any consequent remedial action or advice given by the service
person, with any additional action or advice by the service person.
The maintenance record system shall be available for the property at all times.
NOTE: The maintenance record system may be in the form of a logbook or a computer-based
record system, or other appropriate permanent record system.

2.3 PRECAUTIONS Prior to commencing any inspection, testing or maintenance
procedures, the service person shall carry out the following precautionary procedures as
applicable:
(a) Inform the building owner or agent that maintenance is to be carried out.
(b) Advise the fire control station, where testing will transmit a fire alarm signal.
(c) Where fitted, close lock-off valve and in addition ensure that all extinguishant actuating
circuits are isolated or firing mechanisms are removed to ensure that testing or that
other maintenance procedures cannot cause discharge of any extinguishant.
(d) Set the detection and alarm system in the appropriate test mode and ensure that
ancillary facilities, systems and air-handling plant (including smoke exhaust and
stairwell pressurization systems, evacuation warning systems, and the like), where they
are not to be tested, are isolated to avoid inadvertent operation. .
(e)

On completion of any inspection, testing or maintenance procedure, the service person
shall ensure that all controls are returned to the normal condition and re-establish the
systems integrity.

NOTE: The action to be taken when any function is isolated should be covered by the maintenance
contract. The following is recommended: When any section of an installation is to be isolated,

the owner or agent should be notified and in turn should advise the appropriate authority.
COPYRIGHT

AS 1851.12—1995

6

S E C T I O N
3.1 WEEKLY
follows:

3

M AI N T E N AN C E

P R O C E D U R E S

Where required, the weekly maintenance procedure shall be performed as

(a)

Isolate extinguishant supply and ancillaries in accordance with Clause 2.3.

(b)

Check the proper operation of all associated visual alarm indicators by initiating a
simulated fire alarm on an alarm zone facility.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

The above test shall be carried out in a manner acceptable to the fire control station.
(c)

Check the satisfactory operation of the fire alarm bell.

(d)

Reset alarm zone facility.

(e)

On completion of testing, to re-establish the system’s integrity, ensure that all switches
are in the correct operating position. Inform the building owner or agent of any items
requiring corrective action.

(f)

Record the results of weekly maintenance procedures in the log, including whether the
fire alarm signal from the alarm zone facility was received at the fire control station
(see Clause 4.2).

3.2

MONTHLY The monthly maintenance procedure shall be performed as follows:

(a)

Isolate extinguishant supply and ancillaries in accordance with Clause 2.3.

(b)

Initiate a simulated fire alarm on an alarm zone facility so as to transmit an alarm to
the fire control station. Check the proper operation of all associated visual alarm
indicators. Check that the alarm was correctly received at the fire control station.
The above test shall be carried out in a manner acceptable to the fire control station.

(c)

Check the satisfactory operation of the fire alarm bell.

(d)

Reset alarm zone facility to normal.

(e)

Test each alarm zone facility to confirm its ability to operate the master alarm facility.

(f)

Check that all visual and audible indicators are operating correctly.

(g)

Check that all control and indicating equipment is in a clean and operational condition,
and effectively dust sealed.

(h)

Ensure that all fire indicator panels, extinguishant local control stations (LCS), repeater
panels and mimic panels are clearly visible and readily accessible (see AS 1670).

(i)

Simulate fault conditions on all alarm zones to ensure that fault indicators, both audible
and visual, where applicable, are operating correctly from each alarm zone facility.

(j)

Check the battery condition by operating the battery test facility for 1 min, and record
the battery condition in the log.

(k)

Inspect all extinguishant containers, manual mechanical release mechanisms and all
other ancillary equipment to ensure they are secure, undamaged and unobstructed.

(l)

Where applicable, check and record the container gauge pressures. Any container
showing a loss in pressure exceeding 10% of the nominal filling pressure, adjusted for
temperature change from initial fill at the applicable reference temperature, shall be
reported to the owner or agent for corrective action.

(m)

Check the function of all extinguishant manual initiate switches and the extinguishant
inhibit switch on each LCS.

COPYRIGHT

7

AS 1851.12—1995

(n)

Ensure that all discharge nozzles are not obstructed and are correctly aligned. Carry out
a visual inspection on all exposed pipework, support and mechanical controls.

(o)

Ensure that all warning and instruction signs, as required, are correctly displayed and
unobstructed and that all controls, valves, switches, and the like, are properly
identified.

(p)

On completion of testing, to re-establish the system’s integrity, ensure that all controls
are returned to the normal condition.

(q)

Record the results of monthly maintenance procedures in the log, including all items
requiring corrective action, adjustment and the like (see Clause 4.2).

(r)

Check that items previously recorded as requiring attention have been attended to, or
record the reasons why corrective actions have not been completed.

(s)

Inform the building owner or agent that maintenance is completed and of any items
requiring corrective action. Obtain all necessary signatures in the log.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

3.3 SIX-MONTHLY The six-monthly maintenance procedure shall be performed as
follows:
(a)

Isolate extinguishant supply and ancillaries in accordance with Clause 2.3.

(b)

Check and record the amount of extinguishant in each container by weight or liquid
level.

NOTE: Pressures and liquid levels in extinguishant container can vary considerably with
temperature change. There may be a considerable time delay between changes in ambient
temperature and the corresponding changes in the extinguishant container pressure or level. Any
liquid level measurement should be referenced to a datum, established at a known temperature.

(c)

Perform monthly maintenance procedures in accordance with Clause 3.2, Items (b) to
(s), inclusive.

3.4

YEARLY The yearly maintenance procedure shall be performed as follows:

NOTE: Prior to yearly maintenance procedures, the maintenance provider should give the owner
or agent sufficient notice of testing to allow time for witnessing to be arranged.

(a)

Isolate extinguishant supply and ancillaries in accordance with Clause 2.3.

(b)

Perform monthly maintenance procedures in accordance with Clause 3.2, Items (b)
to (o), inclusive.

(c)

Inspect all detectors and sampling points for any condition which is likely to adversely
affect their operation, such as deposition of dust or coating of paint.

(d)

Remove at least one detector on each alarm zone circuit and confirm that the fault
signal is registered at the appropriate alarm zone facility.

(e)

Determine the sensitivity of all detectors. This may take the form of either —
(i)

the testing of a detector in situ; or

(ii)

the removal of a detector and its replacement by a detector which has been
checked and calibrated by the supplier.

NOTE: For details of detector testers, see AS 1851.8.

(f)

Check that an alarm on each detector registers on the correct alarm zone facility.

NOTE: This may require the owner or agent to provide other personnel to reset or restart ancillary
facilities.

(g)

Measure and record the time delay between any detector circuit’s initiation of
extinguishant release and receipt of the operation signal at the actuators.

COPYRIGHT

AS 1851.12—1995

(h)

(i)
(j)
(k)

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

(l)
(m)

8

Check the operation of all remote ancillary control facilities, including door closers,
evacuation warning systems, air-handling systems and the like, and ensure that each
controlled device can be correctly activated.
Check the operation of all mechanical release devices.
Check the operation of all illuminated signs and audible indicators.
Check the correct operation of the power supply supervision alarm, if applicable, by
disconnecting all power supplies to the fire indicator panel.
Inspect control and indicating equipment components for evidence of deterioration.
Check and record the amount of extinguishant in each container in the following
system types:
(i)
Carbon dioxide systems, by mass or liquid level. (Mass loss in excess of 10%
is cause for rejection.)
(ii)
Inert gas systems (e.g. Inergen), by pressure. (Pressure loss in excess of 10%
is cause for rejection.)
(iii)
Halogenated hydrocarbon systems (e.g. Halon 1301), by mass and pressure or
liquid level. (Mass loss in excess of 5% or pressure loss in excess of 10% is
cause for rejection.)
(iv)
FM-200 systems, by mass and pressure or liquid level. (Mass loss in excess of
5% or pressure loss in excess of 10% is cause for rejection.)
(v)
NAF S-III systems, by mass and pressure or liquid level. (Mass loss in excess
of 5% or pressure loss in excess of 10% is cause for rejection.)

NOTE: Pressures and liquid levels in extinguishant containers can vary considerably with
temperature change. There may be a considerable time delay between changes in the ambient
temperature and the corresponding change in the extinguishant container pressure or level. Any
liquid level measurement should be referenced to a datum, established at a known temperature.

(n)

(o)
(p)
(q)

(r)
(s)

(t)
(u)

Check and record all container details for compliance with requirements for periodic
inspection and pressure testing in accordance with the Standard appropriate to the
container used.
Ensure that all discharge nozzles are not obstructed and are correctly aligned. Carry out
a visual inspection on all accessible pipework, supports and mechanical controls.
Non-electrical detection devices and manually operated devices shall be verified in
accordance with the manufacturer’s procedure.
Where applicable, check the electrical resistance of actuators and insulation of actuators
to earth and replace them where appropriate. Pyrotechnic actuators shall be replaced
in accordance with the manufacturer’s specifications.
Check for correct operation of directional valves.
Perform a full system function check by initiating detector alarms and checking the
response of container valve actuating circuits at the extinguishant containers.
This check shall include the operation of the valve actuators, where this can be done
without discharging extinguishant or damaging the actuator in which case the test shall
be carried out using a device to simulate actuation. Where various combinations of
detector circuits can initiate an extinguishant discharge, each combination shall be
checked.
Verify enclosure volume.
Check for building alterations, changes in the environment, openings or other factors
that could —
(i)
cause inadvertent discharge of extinguishant;
(ii)
allow leakage of extinguishant from the protected area; and
(iii)
require modification to the system.
COPYRIGHT

9

AS 1851.12—1995

Where the building has been altered, conduct an additional check for compliance with design
concentration and, if necessary, conduct a full discharge test.
NOTE: Leakage rate may be obtained by the fan pressurization technique.

On completion of testing to re-establish the systems integrity ensure all controls are
returned to the normal condition.

(w)

Record the results of yearly maintenance procedures in the log, including details of all
equipment that does not pass visual inspection or fails to operate satisfactorily. Notify
the owner or agent of any deficiencies within the installation and obtain all necessary
signatures in the log.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

(v)

COPYRIGHT

AS 1851.12—1995

10

S E C T I O N 4
M AI N T E N AN C E
D O C U M E N T A T I O N
4.1 GENERAL Maintenance documentation shall be provided for each gaseous system
and shall include the following:
(a)

Installer’s report as specified in the appropriate installation Standard.

(b)

Installer’s statement, as-installed diagrams, and commissioning test report as specified
in AS 1670 for the control and indicating equipment.
The installer’s statement, as-installed diagrams, and commissioning test report shall be
prepared on durable, good quality paper, clearly legible and contained in a plastic cover
or, alternatively, bound into the operator’s manual.

(c)

Operator’s manual as specified in AS 1603.4.

(d)

Log.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

The maintenance documentation given above shall be housed in a secure location at the fire
indicator panel, or as otherwise approved by the appropriate authority.
The documentation shall describe the state of the installation as it currently exists. If any
changes are made to the installation, the relevant records shall be updated, i.e. installer’s
statement, as-installed diagrams, operator’s manual, and the like.
4.2 RECORD SYSTEM A maintenance record system shall be provided to sequentially
register all known alarms, faults, disconnections, discharges and all maintenance and
inspection procedures carried out so that there is a composite record of all events related to
the installation. It shall include the following:
(a)

Name of owner or agent.

(b)

Name of maintenance organization.

(c)

Identification of the system.

(d)

Details of weekly, monthly, six-monthly and yearly maintenance procedures.
NOTE: See Appendix A.

(e)

Container pressure report.

(f)

A ‘report’ section for attendances apart from maintenance procedures.

Where a log book is used, it shall be substantially bound (not in loose-leaf format) and shall
have numbered pages in triplicate. The log book shall include the signatures of the owner or
agent and service person. A required distribution of copies printed on each page shall be as
follows:
(i)

Original

Owner/occupier/agent.

(ii)

Duplicate

Service person.

(iii)

Triplicate

Retain in book.

The maintenance record system shall be available for the property at all times.
NOTE: The maintenance record system may be in the form of a logbook or a computer-based
record system or other appropriate permanent record system.

COPYRIGHT