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AS 1851.11—1991 MAINTENANCE OF FIRE PROTECTION EQUIPMENT - HALON 1301 TOTAL FLOODING SYSTEMS

AS 1851.11—1991 MAINTENANCE OF FIRE PROTECTION EQUIPMENT - HALON 1301 TOTAL FLOODING SYSTEMS

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This Australian Standard was prepared by Committee FP/11, Gaseous Fire Extinguishing
Systems. It was approved on behalf of the Council of Standards Australia on 8 May 1991
and published on 12 July 1991.

The following interests are represented on Committee FP/11:
Australian Assembly of Fire Authorities
Australian Fire Protection Association
Commonwealth Fire Board

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Confederation of Australian Industry
Department of Administrative Services–Australian Construction Services
Fire Protection Industry Association of Australia
Insurance Council of Australia
Railways of Australia Committee
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 editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto.
Full details of all Australian Standards and related publications will be found in the Standards Australia Catalogue
of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which
subscribing members receive, and which gives details of new publications, new editions and amendments, and of
withdrawn Standards.
Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed. Notification of any inaccuracy or amibuity 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 90043.

AS 1851.11—1991

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Australian StandardR

Maintenance of fire protection
equipment
Part 11: Halon 1301 total flooding
systems

First published as AS 1851.11—1991.

PUBLISHED BY STANDARDS AUSTRALIA
(STANDARDS ASSOCIATION OF AUSTRALIA)
1 THE CRESCENT, HOMEBUSH, NSW 2140
ISBN 0 7262 6962 X

AS 1851.11—1991

2

PREFACE
This Standard was prepared by the Standards Australia Committee on Gaseous Fire Extinguishing Systems to
provide suitable requirements for the regular maintenance of halon 1301 total flooding systems.
Halon 1301 total flooding systems contain control and indicating equipment (CIE) that complies with AS
1603.4 and is installed in accordance with AS 1670. The maintenance provisions of this Standard therefore
overlap those for control and indicating equipment contained in AS 1851.8. Where the CIE for a halon system
forms part of a fire indicator panel (FIP) serving other zones as well as the halon protected enclosure, then
maintenance in accordance with AS 1851.8 and this Standard can be undertaken simultaneously without the
need for duplication. This Standard, AS 1851.11, however, has been written so that it can also be used for a
halon 1301 control panel that serves only a halon protected enclosure.
This Standard has some textual variance from its sister document, AS 1851.8, Maintenance of fire protection

equipment, Part 8: Automatic fire detection and alarm systems, due to the change in document style
procedures of Standards Australia.

CONTENTS

Page

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SECTION 1 SCOPE AND GENERAL
SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
1.3
DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SECTION 2 GENERAL REQUIREMENTS
MAINTENANCE OF INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
RECORDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3
SECTION 3 MAINTENANCE PROCEDURES
WEEKLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1
3.2
MONTHLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
YEARLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3
SECTION 4 MAINTENANCE DOCUMENTATION
4.1
4.2

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LOGBOOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

APPENDIX A

HALON 1301 SYSTEM–LOGBOOK REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

E Copyright — STANDARDS AUSTRALIA
Users of Standards are reminded that copyright subsists in all Standards Australia publications and software. Except where the Copyright Act allows
and except where provided for below no publications or software produced by Standards Australia may be reproduced, stored in a retrieval system in
any form or transmitted by any means without prior permission in writing from Standards Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and information on commercial software royalties should be directed to the head office of Standards
Australia.
Standards Australia 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 without payment of a royalty or advice to Standards Australia.
Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royalty payment provided
such programs are used exclusively in–house by the creators of the programs.
Care should be taken to ensure that material used is from the current edition 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 identified.
The use of material 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 varied by Standards Australia at any time.

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3

AS 1851.11—1991

STANDARDS AUSTRALIA
Australian Standard
Maintenance of fire protection equipment
Part 11: Halon 1301 total flooding systems
SECTION 1

SCOPE AND GENERAL

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1.1 SCOPE This Standard sets out requirements for the regular maintenance of halon 1301 total flooding fire
extinguishing systems designed and installed in accordance with AS 3689.1. Regular maintenance includes
inspection and testing procedures.
Although this Standard has direct relevance to systems designed and installed in accordance with AS 3689.1,
the Standard may be used as a basis for maintenance of other halon 1301 total flooding systems.
1.2 REFERENCED DOCUMENTS The following documents are referred to in this Standard:
AS
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
2030
SAA Gas Cylinders 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
3689
Automatic fire extinguishing systems using halogenated hydrocarbons
3689.1
Part 1: Halon 1301 total flooding systems
1.3 DEFINITIONS For the purpose of this Standard, the definitions given in AS 1603.4, AS 1670, AS 2484.2
and AS 3689.1 apply.

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AS 1851.11—1991

4

SECTION 2 GENERAL REQUIREMENTS
2.1 MAINTENANCE OF INSTALLATION Given the environmental impact of halon 1301, it is essential
that regular maintenance of halon 1301 total flooding systems is undertaken to prevent leakage or inadvertent
discharge of halon 1301. It is also critical that maintenance procedures adopted do not lead to accidental release
of halon 1301 to the atmosphere.
Regular maintenance is classified into three levels which shall be performed as follows:
(a) Weekly, only where–
(i) there is an unsupervised connection to the fire control station; or
(ii) the regulatory authority deems it necessary.
(b) Monthly on all systems.
(c) Yearly on all systems.
NOTES:
1

Maintenance should be carried out only by persons having qualifications and experience suitable for the particular work on 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.

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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.
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 if testing will transmit a fire alarm signal.
(c) Ensure that all halon 1301 actuating circuits are isolated or firing mechanisms are removed to ensure testing
or other maintenance procedures cannot cause discharge of any halon 1301.
(d) Set the detection and alarm system in the appropriate test mode and ensure that ancillary facilities, gas
flooding systems, and air–handling plant (including smoke exhaust and stairwell pressurization systems,
evacuation warning systems, and the like) are isolated to the extent that the testing or maintenance will not
cause inadvertent operation.
NOTE: The action to be taken when any circuit is isolated should be covered by the maintenance contract. The following actions are
recommended:
(a) When any part of an installation is to be isolated ensure there are no obvious safety or fire risks associated with the section being
isolated. Where there is any risk of fire arising from the isolation of any part of the installation, the fire control station and the
owner or agent should be notified.
(b) When any section of an installation is to be isolated and left unattended the owner or agent should be notified. The owner or agent
should advise the appropriate authority.

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5

AS 1851.11—1991

SECTION 3 MAINTENANCE PROCEDURES

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3.1 WEEKLY The weekly maintenance procedure shall be performed as follows:
(a) Isolate halon supply in accordance with Clause 2.3(c).
(b) Initiate a simulated fire alarm on an alarm zone facility so as to transmit an alarm to the fire control station.
Check for proper operation of all associated alarm visual 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 for satisfactory operation of the fire alarm bell.
(d) Reset alarm zone facility.
(e) Check the battery condition by operating the battery test facility for 1 min, and record the battery condition
in the logbook.
(f) On completion of Steps (b), (c), (d) and (e), ensure that all switches are in the correct operating position, and
if a faulty condition exists advise the owner or agent. Re–establish system integrity.
(g) Record the results of weekly maintenance procedures in the logbook, 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 halon supply in accordance with Clause 2.3(c).
(b) Initiate a simulated fire alarm on an alarm zone facility so as to transmit an alarm to the fire control station.
Check for 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 for 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, local halon control stations (LHCS), 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) Inspect all halon 1301 gas containers, manual mechanical release mechanisms, and all other ancillary
equipment to ensure they are secure, undamaged and unobstructed.
(k) Check and record the container gauge pressures.
(l) Any container showing a loss in pressure exceeding 5% of the nominal filling pressure, adjusted for
temperature change from initial fill at 21°C, shall be reported to the owner or agent for corrective action.
NOTE: Pressures in halon 1301 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 halon container pressure.

(m) Check the function of all halon manual initiate switches and the halon inhibit switch on each LHCS.
(n) Ensure that all warning and instruction signs as required by AS 3689.1 are correctly displayed and
unobstructed and that all controls, valves, switches, etc., are properly identified.
(o) Ensure that all controls are returned to the normal condition. Re–establish the system integrity.
(p) Record the results of monthly maintenance procedures in the logbook, including all items requiring
corrective action, adjustment and the like (see Clause 4.2).
(q) Check that items previously recorded as requiring attention have been attended to, or record the reasons (if
known) why corrective actions have not been completed.
(r) Inform the building owner or agent that maintenance is completed and of any items requiring corrective
action. Obtain all necessary signatures in the logbook.
3.3 YEARLY The yearly maintenance procedure shall be performed as follows:
NOTE: Prior to yearly maintenance procedures the maintenance person should give the owner or agent sufficient notice of testing to
allow time for witnessing to be arranged.

(a) Isolate halon supply in accordance with Clause 2.3(c).
(b) Perform monthly maintenance procedures in accordance with Clause 3.2 Items (b) to (n).
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AS 1851.11—1991

6

(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 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 Appendix B, AS 1851.8.

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

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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 gas release, and the operation
of the halon container actuators.
(h) 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.
(i) Check the operation of all mechanical release devices.
(j) Check the operation of all illuminated ‘EVACUATE AREA’ and ‘DO NOT ENTER’ signs.
(k) Check the correct operation of the power supply supervision alarm, if applicable, by disconnecting all
power supplies to the fire indicator panel.
(l) Inspect control and indicating equipment components for evidence of deterioration.
(m) Check the mass or measure the contents of all halon 1301 containers and pilot containers where fitted and
record in the logbook. Any container showing a loss of net weight exceeding 5% shall be reported to the
owner or agent for corrective action.
(n) Check and record all container details for compliance with requirements for periodic inspection and
pressure testing in accordance with AS 2030.1.
(o) 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.
(p) Check for correct operation of direction valves.
(q) Perform full system function check by initiating detector alarms and checking on the response of container
valve actuating circuits at the halon 1301 containers.
This check shall include the operation of the valve actuators, where this can be done without discharging
halon 1301 or damaging the actuator.
Where various combinations of detector circuits can initiate a halon 1301 discharge, each combination shall
be checked.
(r) Check for building alterations, changes in the environment, openings or other factors that could–
(i) cause inadvertent discharge of halon 1301;
(ii) allow leakage of halon 1301 from the protected area; or
(iii) require modification to the system.
NOTE: Leakage rate may be obtained by the fan pressurization technique, referenced in AS 3689.1, Appendix D.

(s) Ensure all controls are returned to the normal condition and re–establish the system integrity.
(t) Record the results of yearly maintenance procedures in the logbook, including details of all equipment that
does not pass the visual inspection or fails to operate satisfactorily, and notify the owner or agent of any
deficiencies within the installation and obtain all necessary signatures in the logbook.

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7

AS 1851.11—1991

SECTION 4 MAINTENANCE DOCUMENTATION

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4.1 GENERAL Maintenance documentation shall be provided for each halon 1301 total flooding system and
shall include the following:
(a) Installer’s report as specified in AS 3689.1.
(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 plastics cover or alternatively bound into the
operator’s manual.
(c) Operator’s manual as specified in AS 1603.4.
(d) Logbook.
The maintenance documentation given above shall be housed in a secure location at the fire indicator panel, or
as otherwise approved by the regulatory 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 LOGBOOK A log shall be provided to sequentially record 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. Where a logbook is used it shall be substantially bound, not in a loose–leaf
form, and in triplicate format with numbered pages.
Where a logbook is used, it shall include the following:
(a) Name of owner or agent and the reporting location.
(b) Name of maintenance organization(s).
(c) Identification of the halon 1301 system.
(d) Details of weekly, monthly and yearly maintenance procedures as given in Appendix A.
(e) Container pressure and weights report.
(f) A ‘report’ section for attendances apart from maintenance procedures.
(g) Required distribution of copies shall be printed on each page, i.e.–
(i) original ‘owner/occupier/agent’;
(ii) duplicate ‘service contractor’; and
(iii) triplicate ‘retain in book’.

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AS 1851.11—1991

8

APPENDIX A
HALON 1301 SYSTEM–LOGBOOK REPORT
(Normative)
AS 1851.11–1991
Page 1 of 2

MONTH
INSPECTION, TESTING, AND MAINTENANCE PROCEDURES
Maintenance organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Premises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.............................................

NOTE: Give details of all unsatisfactory items in report section. Refer to operations manual for commissioning test report.
Place a [3] in box where item is satisfactory
Place a [x] in box where item is unsatisfactory

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WEEKLY

CHECKED
WEEK 1

WEEK 2

WEEK 3

WEEK 4

WEEK 5

(a) Fully isolate halon supply

[ ]

[ ]

[ ]

[ ]

[ ]

(b) Fire alarm signal simulation

[ ]

[ ]

[ ]

[ ]

[ ]

(c) Fire alarm bell or warning device operation

[ ]

[ ]

[ ]

[ ]

[ ]

(d) Installation reset to normal

[ ]

[ ]

[ ]

[ ]

[ ]

(e) Battery condition

[ ]

[ ]

[ ]

[ ]

[ ]

(f) All switches returned to correct operating position.
Halon reconnected

[ ]

[ ]

[ ]

[ ]

[ ]

(g) Fire alarm signal received at fire control station

[ ]

[ ]

[ ]

[ ]

[ ]

DATE (weekly)
MONTHLY
(a) Fully isolate halon supply
(b) Alarm zone facility operation
(c) Indicator lights correct operation
(d) All alarm bells and signalling devices
operation
(e) CIE operational and clean
(f) All FIP, LHCS, other panels clearly visible
and readily accessible
(g) Fault condition simulation on all alarm
zones and ensure—
1. fault annunciators operative
2. audible/visual indication operative
(h) All halon containers, other equipment
secure, undamaged
(i) Container gauge pressures recorded (see
over)
(j) LHCS unit operational
(k) Signs and controls checked
(l) All controls returned to normal, halon
supply reconnected
(m)Correction of items (see over)
(n) Building owner informed, corrective action
identified

CHECKED
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[ ]
[
[
[
[

]
]
]
]

YEARLY
(a) Fully isolate halon supply
(b) Inspect all detectors and sampling points
(c) Fault signal registration for each alarm
zone
(d) Detector and sampling point testing, as
appropriate
(e) Correct operation of all ancillary control
facilities
(f) Operation of all manual call points
(g) Check operation of signs
(h) Power supply supervision alarm
(i) Control and indicating equipment component
inspection for deterioration
(j) Mass of all halon 1301 recorded (record over
page)
(k) Container compliance with AS 2030.1
(l) Actuators checked
(m)Directional valves operational
(n) Null function test
(o) All controls returned to normal, halon supply
reconnected
(p) Building modifications, openings identified,
leakage test conducted
(q) Building owner informed, corrective action
identified
(r) Time delay recorded

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CHECKED
[ ]
[ ]
[ ]
[ ]
[
[
[
[

]
]
]
]

[ ]
[
[
[
[
[

]
]
]
]
]

[ ]
[ ]
[ ]
[ ]

9

AS 1851.11—1991

AS 1851.11–1991
Page 2 of 2
HALON 1301 SYSTEM–LOGBOOK REPORT

MONTH
MONTHLY

YEARLY
System time delay

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Container pressures

Designed =

sec

Actual =

sec

Container weights

1.

MPa

1.

kg

2.

MPa

2.

kg

3.

MPa

3.

kg

4.

MPa

4.

kg

5.

MPa

5.

kg

6.

MPa

6.

kg

7.

MPa

7.

kg

8.

MPa

8.

kg

9.

MPa

9.

kg

10.

MPa

10.

kg

REPORT(S)

SIGNED:

SERVICE PERSON:

For owner or agent

Print name

DATE:

Signature

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