Southern Rural Water
Meter Installation Specification
Customer Installation
METER INSTALLATION SPECIFICATION
1.0
GENERAL
1.1
The basic requirements for the installation of meters will be:
1.2
The installer responsible for the meter installation must install the works in
accordance with these, manufacturer’s specifications and Australian Technical
Specification 4747 and any pattern approval certificate held by the meter.
1.3
The installer must fit the meter in either the suction or discharge pipelines provided
the above conditions are met. The recording capsule must be above the pipe centre
and in a readable position. It must not be fitted in a vertical-down or angled falling
slope.
1.4
All exposed uPVC piping must be painted with protective PVA (Poly Vinyl Acetate)
paint. Surfaces to be painted must be cleaned in accordance with the manufacturer’s
instructions, using a strong detergent or acetone to remove any grease or dirt. Check
with manufacturers guidelines.
1.5
All welding will be carried out in a manner that will comply with the appropriate
welding standard (AS/NZS 1554: 2004). All welded areas will be painted with a
protective paint (Galmet or similar).
1.6
All workmanship required under this contract must comply with relevant Australian
Standards (see also clause 1.23).
1.7
Meters and associated pipework must be installed and/or joined to in a manner that
will be watertight up to the pressure of the pipework and meter used.
1.8
SRW will provide all meters required for installation. The installer will be advised
where the meters are available from and will be required, together with Southern
Rural Water (SRW) personnel to record receipt of the meters from SRW by recording
the size and serial number of each meter received.
1.9
All materials other than the meter, but not limited to, consumable items, essential for
the proper execution of the works, must be provided by the Contractor.
1.10
Unless otherwise stated, Australian Standards Specifications and Codes/Regulation
shall apply to all work under the contract. Where, as determined by the
Superintendent, no such standard is applicable to a particular item, other National or
International standards shall apply as appropriate.
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Meter Installation Specification
Customer Installation
1.11
All materials and equipment supplied by the customer shall be new, fit for use and
comply with the relevant Australian Standards, or where they do not apply; the
appropriate National or International standard shall apply. Applicable standards shall
be the latest edition last published prior to the closing date of the tender unless
otherwise specified.
1.12
The installer will work safely at all times, and in accordance with the guidelines set by
the Occupational Health and Safety Act 1985 and its subsequent amendments. Job
Safety Analysis procedures must be formulated by the customer and approved by
SRW for the specific activities of meter installation prior to commencing site works.
1.13
Where metal support bracing is used it must be fixed in the ground in a concrete
footing. Galvanised metal posts (AS 1163 – Structural Steel Hollow Sections) shall
not be less than 25mm square section or circular section (2.5 mm thickness) for
meters under 100mm diameter. Meters greater than 100mm diameter shall have
metal posts not less than 50mm square section or circular section (5 mm thickness).
Attaching brackets will be attached to the posts and will be large enough to secure
the pipe-work to the brace. Details of the footing are on the attached drawing, No.
602056.
1.14
2 No. Lock nuts or similar anti-tampering security approved by the Superintendent
must be placed on opposing sides of the meter body when fixed in place to the
existing or proposed pipework. The customer must ensure that all existing meter
seals are in place, and replace any that have been removed. SRW staff can assist
with any broken seals, at inspection after the completion of the installation. Stainless
steel seals and wire must be used. No other seal material is permitted.
1.15
The following types of pipe are not to be fitted to the meter, especially upstream:
(i)
Single and double wire wound petro-chemical flexible hose;
(ii)
Spiral welded steel pipe;
(iii)
Lay-flat hose.
Existing set-ups using any of these types of pipe are too relocated away from the
meter.
1.16
Any protective fencing required shall be included as indicated to the following
minimum standard (see Drawing No.602057-4):
a. Fencing to be a maximum of 6 metres long and 2 metres wide,
b. 150 mm treated pine, hardwood or similar posts – minimum 6 No.,
c. 150 x 25 mm pine, hardwood or similar boards – minimum 3 No. rails
required.
1.17
All meters must be installed above ground and as close as practical to the source of
extraction, with regard the requirements of this specification.
1.18 Portable meter sections shall be fitted with a Non Return Valve (NRV) on the
discharge side of the meter directly after the minimum straight section required after the
meter. Any fittings required to connect to irrigation pipes are to be positioned after the
NRV.
1.20
Ensure that that the correct pipe has been used for the installation. Refer to the meter
data sheets which are attached to this contract.
1.21
Ensure all HDPE and other plastic pipes, with welded flanges and sections maintain
the internal diameter of the pipe used. No intrusions are permitted. All intrusions are
to be ground off internally to ensure a smooth internal pipe profile, including flanges.
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Meter Installation Specification
2.0
FLANGE METERS: MECHANICAL & ELECTRO-MAGNETIC (EM)
2.1
There are several types of this meter:
Customer Installation
2.1.1 Elster R2000 meter (80 – 300 mm diameter, minimum U/S DN1 = 10, D/S DN
= 5);
2.1.2 Elster CSJ S2000 meter (50 – 100 mm diameter, minimum U/S DN1 = 10, D/S
DN = 5);
2.1.3 Elster Helix H4000 meter (50 – 300 mm diameter, minimum U/S DN1 = 10,
D/S DN = 5);
2.1.4 Elster WP-T-M R1000 meter (80 – 300 mm diameter, minimum U/S DN1 = 10,
D/S DN = 5);
2.1.5 Siemens MAG8000 (EM) meter (50 – 300 mm, minimum U/S DN1 = 5, D/S DN
= 3) diameter;
2.1.6 ABB AquaMaster (EM) meter (15 – 300 mm diameter, minimum U/S DN1 = 5,
D/S DN = 2).
2.2
The contractor is to install the meter so that it has, as least a minimum of ten times
the meter diameter (DN) distance of straight pipe upstream of the meter and at least
a minimum of five times the meter diameter (DN) downstream of the meter, unless
specified otherwise. In this range the pipe must be the same diameter as the meter
and straight. These lengths are minimum requirements only; lengths are to be
longer than specified.
2.3
EM meters are to be installed as per manufacturer’s specification which is generally
at least five times the meter diameter (DN) distance of straight pipe upstream and at
least a minimum of two times the meter diameter (DN) downstream of the meter,
unless specified otherwise. These lengths are minimum requirements only;
lengths are to be longer than specified.
2.4
Any obstructions such as valves, pumps, elbows, section changes, must be outside
this range. Preferred location is downstream of the meter installation.
2.5
Any upstream valve fitted must be either fully open or fully closed. See also Clause
2.5.
2.6
Any throttling valve or flow control valve fitted or re-fitted must be downstream of the
meter.
2.7
The meter body will be in a position so as it operates full of water at all times, with the
counter facing up.
2.8
All flanges supplied by the Contractor necessary to install the meter must comply with
AS 2129 - 2000 Table D.
2.9 The meter must be fitted in accordance with the arrows on the meter for flow direction.
Notes:
1.
DN = Nominal Diameters
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Meter Installation Specification
Customer Installation
3.0
THREAD-ENDED, SCREW-ENDED & FLANGELESS ELECTRO-MAGNETIC (EM)
METERS
3.1
There are three types of this meter:
3.1.1
3.1.2
3.1.3
Elster M-190 meter (15 – 40 mm diameter) (Male Thread-ended, No DN’s
required);
Elster WP-T-M R1000 50 mm meter (Female Screw-ended, minimum U/S
DN1 = 10, D/S DN = 5);
Elster Q4000 EM meter (50 – 200 mm diameter, minimum U/S DN1 = 5, D/S
DN = 2).
3.2
The meters are not to be dropped or mishandled at any stage but especially during
transport or installation. The meters must be in their original packaging at any stage
up to installation. If the meters are not in their packaging, the use of thread guard
caps must be used.
3.3
All pipe-work must be flushed clean prior to installing the meters.
3.4
The meters must be protected against the affects of frost. If possible the meter
should be placed inside a building or shed, or other means agreed with SRW.
3.5
Ensure the metres are installed according to the correct direction of flow. Meters are
marked with flow direction arrows.
3.6
The Elster KMM meters must be installed in a horizontal position only. No meter
should be installed in the vertically down, or sloping down position. Metering sites
must ensure the meters are always completely full of water.
3.7
The Elster KMM meters have no requirement to be fitted with straight sections of pipe
before and after the meter. Mounting brackets for the Elster KMM meters are
recommended (contact Elster Metering Pty Ltd). EM meters are to be installed as per
manufacturer’s specification which is generally at least five times the meter diameter
distance of straight pipe upstream and at least a minimum of two times the meter
diameter downstream of the meter, unless specified otherwise.
Notes:
1.
DN = Nominal Diameters
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Meter Installation Specification
Customer Installation
4.0
COMMISSIONING AND TESTING
4.1
The manufacturer’s initial pre-commissioning check to be performed by the customer
after successfully installing the meter is described as follows:
4.1.1
Ensure all flange bolts and /or body cover bolts are fully tightened in
accordance with the manufacturer’s directions.
4.1.2
Slowly open the supply to flush all air from the pipework.
4.1.3
When flushing, do not exceed the meter’s maximum intermittent flow rate and
take care to avoid vibration or shock.
4.1.4
During flushing the centre pointer and/or counter should move in a clockwise
or an ascending direction respectively. If the pointer/counter moves in the
opposite direction, check that the mechanism has not been installed back to
front.
4.1.5
Once satisfied the pipe-work is fully purged of air and the meter is operating
correctly, attach stainless steel wire and seals to two bolt heads connecting
the counter shroud and joint plate and a sealing wire and lead seal between
the body cover and the body. These seals are to be replaced if the original
seals have been removed for any purpose by the customer or are no longer in
place. This can be arranged with SRW through the contact person and
should be noted by the customer.
4.1.6
If a contractor employed by the customer is performing the installation, the
contractor should not operate the pump without the express permission of the
customer in order to perform the pre-commissioning check. If permission is
not given or obtained, the contractor shall complete all aspects of the precommissioning check, without turning on the pump.
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Meter Installation Specification
Customer Installation
5.0
SRW INSPECTION
5.1
On completion of the meter installation, the installer must call the appropriate SRW
contact person to arrange a time for an inspection of the installation. An appropriate
contact person for SRW will be arranged prior to the installation works commencing.
5.2
After completion of the inspection by SRW, the installer will be informed of any
defects required to be rectified or grant approval for the installation. An approval or
defects notice will be issued to the customer. A further inspection by SRW will be
required if there are any defects to be rectified.
5.3
Where an inspection cannot be arranged prior to the meter facility being installed, the
installer is required to provide photographs of the pipe internals to SRW personnel.
This is to ensure that the internal diameter of the pipework and meter used, are not
compromised by any fittings or welds and can be verified by the photographs.
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Meter Installation Specification
6.0
INSTALLERS
6.1
Meter installers must pre-qualify with SRW.
Customer Installation
To obtain pre-qualification, the installer must:
6.2
6.1.1
Demonstrate relevant experience in the installation of meters and
demonstrated knowledge of the requirements relevant to rural irrigation
practices and specification to install meters on irrigation pumping
arrangements. The meter installer must list three referees from previous
projects with their contact details.
6.1.2
Submit relevant Public Liability insurance ($20,000,000). If the meter installer
employs staff, the installer must also submit details of WorkCover insurance.
6.1.3
Meter installers must submit safety hazard assessments and Job Safety
Analysis relevant to the installation of meters.
All customer installed meters will have to be inspected by a Certified Meter Installer
(Validator) to authenticate the installations as per the requirement of the National
Framework for Non-Urban Metering and Australian Technical Specification 4747.
This is also indicated in the Victorian Implementation Plan and SRW’s Metering
Action Plan, in order to comply with the National Framework. Meters can be installed
by non-certified installers but must be validated by a Certified Meter Installer
(Validator). This has taken affect as of 1 July 2010.
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