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RFx Number Status & Type Details Date
2286
Awarded
Request for Tender
Issued by: Goulburn-Murray Water
UNSPSC 1: 73181007 - Boring services - 20%
UNSPSC 2: 72141115 - Electrical cable laying service - 80%
opened
Wed, 19 May 2021 6:00 AM
Closed
Thu, 24 June 2021 2:00 PM
20/05/2021 06:00

Posts

Supplier Post #18 - Inductions and Permit Training This post is publicly visible

What is the average time to do the Basic GMW induction.

Does one person of the crew need to be GMW trained to hold a GMW permit?

If so how many hours is required for this traning?

That is it, Thanks for all your help.

Posted on 17/06/2021 14:33 by Supplier Person

Forum Post:

What is the average time to do the Basic GMW induction.  Response: It takes 30 – 40 min to complete the induction process

Does one person of the crew need to be GMW trained to hold a GMW permit? Response:  The Induction must be completed by All personnel that are on site.  

If so how many hours is required for this traning?  Response: Once the initial induction is done you are clear to work on site.

Note:  The above does not include the cultural heritage side of the training and inductions

Replied on 18/06/2021 10:51 by Louise Belford of Goulburn-Murray Water

Supplier Post #17 - Comms, Solar Generator This post is publicly visible

You mentioned in your Site meeting notes that you had solar and battery back up.

Is there sufficient reserve in your battery system to power to run the mobile phone repeater?

If so, could we divert some of it's power to run the repeater.?

If not, being November and fire season on the rise, what is GMW rulling on running generators un-attended in in the transformer yard?

Posted on 16/06/2021 14:20 by Supplier Person

QUESTION

You mentioned in your Site meeting that you had solar and battery back up.

Is there sufficient reserve in your battery system to power to run the mobile phone repeater?  Response: No. They are run on different systems the battery is 24DC and phone is 240V

If so, could we divert some of it's power to run the repeater.?  Response: No

If not, being November and fire season on the rise, what is GMW rulling on running generators un-attended in in the transformer yard?  Response: A generator would not be allowed to run on total fire ban days

Replied on 16/06/2021 15:04 by Louise Belford of Goulburn-Murray Water

Supplier Post #16 - Powercor Technical HV Standards This post is publicly visible

On drawing 3839755 Sheet 1 of 7 Note 9, below

We have submitted an application to Powercor’s Technical Portal but they have not been obliging as yet and with question time closing tomorrow we are asking if you have a copy of these standards. If so, could they be placed on this public forum.

Posted on 16/06/2021 09:15 by Supplier Person

Question:  

On drawing 3839755 Sheet 1 of 7 Note 9, below

Do you have a copy of these standards. If so, could they be placed on this public forum.

Response:

GMW does not have a copy of these standards. The contractor needs to comply with the Electrical Inspector’s requirements for him to sign off. Hence, GMW suggests seeking advice from one of the qualified HV Inspector listed on the Energy Safe Victoria (ESV) website

As per ESV, to inspect HV a V class licence is required

https://esv.vic.gov.au/licensing-coes/electrical-licences/licensed-electrical-inspectors/

ESVConnect (energysafe.vic.gov.au)
 

Replied on 16/06/2021 14:33 by Louise Belford of Goulburn-Murray Water

Supplier Post #15 - Communications repeater. This post is publicly visible

At the sit visit it was mentioned that the pumping station powers up the Mobile phone repeater.

Is it OK with Telstra or whoever owns it to have this repeater off for a long amount of time? Or is just for use for the pumping sataion?

 

Is there any reason that stops us from temporarily powering this repeater by a generator?

If not, do you have any idea of power consumption for it? We ask this as it will aid with emergency communications and temporary site security camera alerts.

Posted on 15/06/2021 15:22 by Supplier Person

Question:  At the site visit it was mentioned that the pumping station powers up the Mobile phone repeater.
Is it OK with Telstra or whoever owns it to have this repeater off for a long amount of time? Response:  Yes.
Or is just for use for the pumping station?  Response:  The mobile booster is GMW owned and can be powered down as needed, it is there to provide the operations staff with increased mobile service.
 
Question:  Is there any reason that stops us from temporarily powering this repeater by a generator?  Response: No
If not, do you have any idea of power consumption for it? We ask this as it will aid with emergency communications and temporary site security camera alerts.  Response: Unsure on the power consumption of this unit. The system is a 3G / 4G Cel-fi installation.

Replied on 16/06/2021 11:13 by Louise Belford of Goulburn-Murray Water

Supplier Post #14 - HV Joints & Terminations This post is publicly visible

On drawing 489458 sheet 5 you have allowed the following

3 Spare sets of each. Are theese spares allowing for the re-termination of the Robinvale Rd Kiosk on drawing 489457 sheet 1?

Or do we quote for seperate items in this case?

 

Will the question time be extended now that the closing date has been extended?

Thanks.

Posted on 09/06/2021 08:46 by Supplier Person

On drawing 489458 sheet 5 you have allowed the following

3 Spare sets of each. Are theese spares allowing for the re-termination of the Robinvale Rd Kiosk on drawing 489457 sheet 1?  No

Or do we quote for seperate items in this case? Yes, as per Technical Specification under section 10 Pg.15, allow separately for termination testing/inspection for partial discharge and re-termination if required at Robinvale Rd Kiosk.

Will the question time be extended now that the closing date has been extended?  The forum closing date has been extended to 17 June 2021.

Replied on 10/06/2021 08:43 by Louise Belford of Goulburn-Murray Water

Supplier Post #13 - Visual access to HV and LV Cabinets at Site Meeting. This post is publicly visible

Will there be an authorised person at the site meeting that can unlock and open Both HV Kiosk’s doors / compartments and existing LV changeover switch cabinets, LV side of Kiosk as well as the MSB so a non-intrusive visual inspection can be done?

Posted on 07/06/2021 08:15 by Supplier Person

Question: Will there be an authorised person at the site meeting that can unlock and open Both HV Kiosk’s doors / compartments and existing LV changeover switch cabinets, LV side of Kiosk as well as the MSB so a non-intrusive visual inspection can be done?

Response:  Yes there will be an authorised person at the site visit to carry out the above.

Replied on 07/06/2021 08:25 by Louise Belford of Goulburn-Murray Water

Supplier Post #12 - 4 or 5 Earths This post is publicly visible

On Drawing 489455-22 it shows 5 X 150mm earths and on drawing 489455-025 the cabinet shows 4 glands for 4 earths. And on 489455-29 it also shows 4 earths in the redundant conduits.

Which would you like it to be 4 or 5 X 150mm Earths?

 

Posted on 03/06/2021 14:48 by Supplier Person

Question:

On Drawing 489455-22 it shows 5 X 150mm earths and on drawing 489455-025 the cabinet shows 4 glands for 4 earths. And on 489455-29 it also shows 4 earths in the redundant conduits.

Which would you like it to be 4 or 5 X 150mm Earths?

Response:

If you refer to the LV Tech spec is states 5 earth cables.  Drawing 489455-025 of the cabinet states that "This drawing is for installation guidance only"

Replied on 04/06/2021 12:05 by Louise Belford of Goulburn-Murray Water

Supplier Post #11 - Additional Questions This post is publicly visible

1.

The Energy provider for this installation is Shell Energy.

What is the NMI (National Meter Number) of this installation, as this required for truck appointment quotes.

2. 

In the briefing session the old CT Metering enclosure was mentioned as redundant. Does GMW want to make an addendum to have this removed while electricians are on site?

3.

In document A3810451 Page 4 it says

In addition to this the earth bar is currently 10 x 30mm (300 mm²), this will be upgraded from the MSB (located inside the Pump Station) to the new connection cubicle. The size of the new busbar will be 10 x 50mm (500 mm²). The upgrade of this bar will require modifications to the Permalli panel (where it enters the Pump Station) and the connection to the MSB frame.

On page 3 it mentions the neutral to be full size

The existing outgoing busbars (busbar tags from the MSB installed inside the pump station) will be reused with new bars being installed in the new connection point enclosure. Currently the neutral busbar is a reduced size (installed in the vertical position) compared to the active busbar sizing, this will be modified so that all the current carrying busbars are all the same size (with a full sized neutral). The new busbars are arranged vertically and will connect onto the existing busbar tags (viathe rear of the new connection enclosure), the new Mains Cables will connect onto these new busbars (via tags fitted to the busbars – see the supplied drawings). The space between the existing busbar tags is 20mm, the spacings of the new vertical busbars will be 10mm, this will require a 10mm spacer to be installed between the existing busbar tags and the new vertical busbars.

My question. 

Will this increase to the neutral also require modifications to the Permalli Panel? As my interoratation is that iit is going all the way through in to  the MSB. Is this correct?

 

Posted on 02/06/2021 12:49 by Supplier Person

1.    The Energy provide for the installation is Shell Energy, 

What is the NMI of this installation, as this required for truck appointment quotes. Response: The NMI is 6203844792

2.    In the briefing session the old CT Metering enclosure was mentioned as redundant. Does GMW want to make an addendum to have this removed while electricians are on site? Response: Yes, dispose of cabinet, but GMW to retain the Air Circuit Breakers and other associated switch gear.  An Addendum will be issued for the change in scope of work.

3.    In document A3810451 Page 4 it says

In addition to this the earth bar is currently 10 x 30mm (300 mm²), this will be upgraded from the MSB (located inside the Pump Station) to the new connection cubicle. The size of the new busbar will be 10 x 50mm (500 mm²). The upgrade of this bar will require modifications to the Permalli panel (where it enters the Pump Station) and the connection to the MSB frame.

On page 3 it mentions the neutral to be full size

The existing outgoing busbars (busbar tags from the MSB installed inside the pump station) will be reused with new bars being installed in the new connection point enclosure. Currently the neutral busbar is a reduced size (installed in the vertical position) compared to the active busbar sizing, this will be modified so that all the current carrying busbars are all the same size (with a full sized neutral). The new busbars are arranged vertically and will connect onto the existing busbar tags (viathe rear of the new connection enclosure), the new Mains Cables will connect onto these new busbars (via tags fitted to the busbars – see the supplied drawings). The space between the existing busbar tags is 20mm, the spacings of the new vertical busbars will be 10mm, this will require a 10mm spacer to be installed between the existing busbar tags and the new vertical busbars.

My question. Will this increase to the neutral also require modifications to the Permalli Panel? As my interoratation is that iit is going all the way through in to  the MSB. Is this correct?

Response:  No modifications required to the Permalli Panel for the Neutral bar. The existing Neutral bar in the Permalli Panel going to the MSB is the same size as the active busbars.
Modifications required for Earth busbar only.

 

Replied on 02/06/2021 16:16 by Louise Belford of Goulburn-Murray Water

Buyer Post #10 - Supplier Post & Response This post is publicly visible

Question:  

Conduit inside diameter is 140mm and the space factor is 25.5% as per drawing number 489458 Sheet 5.  Response: Please clarify how you derive the 25.5% space factor.

Assuming that this refers to the 140mm conduit can only be filled to a maximum of 74.5% when completing our cable tension calculations.  

Response:  GMW's calculation is

the cable cross-section (70.7 diameter) : 3925 sq mm (as per spec sheet for cable)

Conduit Cross section (140mm diamater): 15393.8 Sq mm

Hence, the available space in the conduit is 74.5%, and cable occupied space is 25.5%

The AS3000 requirement is to have a 50% space factor for one cable in the conduit.  Hence, the conduit can be filled to a max of 50%.

 

 

Posted on 02/06/2021 12:48 by Goulburn-Murray Water

Supplier Post #8 - Soil Removal This post is publicly visible

Is there any risk on site from an environmental perspective that soil around the transformer specified for removal from site be contaminated? If so will the contractor be required to have it tested for any contaminants prior to disposal off site? 

Posted on 02/06/2021 11:18 by Supplier Person

Question: Is there any risk on site from an environmental perspective that soil around the transformer specified for removal from site be contaminated? If so will the contractor be required to have it tested for any contaminants prior to disposal off site? 

Response: Contaminated soil is covered in the site EMP, there is no requirement for the Principal Contractor to test the material.

Replied on 02/06/2021 14:53 by Louise Belford of Goulburn-Murray Water

Buyer Post #6 - Supplier Post Question & Response This post is publicly visible

QUESTION: is it possible to have a contact number for the HV or electrcal engineer? Our HV team leader would like to discuss options as per below.

ANSWER:  No, I cannot provide you with the contact number of the HV or Electrical Engineer.  Please refer to document Part A & B - Clause 9 Process Matters.

Posted on 28/05/2021 12:59 by Goulburn-Murray Water

Buyer Post #4 - Forum Questions & Responses This post is publicly visible

1. What is the measurement in the below?  Below dimension is 315mm.  All dimensions are indicative and are to be checked & verified on site, before any fabrication / construction and will not constiutue grounds for a contract variation.

cid:image003.jpg@01D7520E.E3D759C0

2. What is A and B in the snip it below? Do you have more detail?  The A & B are brackets on the enclosure sidewall for the provision of mounting the DIN Rail for the Thermostat and Anti-condensation Heater, respectively.

cid:image004.jpg@01D7520E.E3D759C0

3. Is the Kiosk at the Robinvale Road end a GMW asset?  Yes

4. Where is the suspencted bad connection? On the line or the load?  On the load side

5. If the suspected faulty connection is bad and fails the required tests does GMW have a preferrred method of doing the re-termination?  No, the Tenderer is to provide in their methodology.

Posted on 27/05/2021 15:04 by Goulburn-Murray Water

Buyer Post #3 - Tender Site Visit This post is publicly visible

The tender site visit scheduled for 10.00 am Tuesday, 1st June 2021 will be postponed until the current covid restrictions are relaxed.  An Addendum will be issued as soon as the site visit has been re-scheduled.  A proposed date (depending on when restrictions are relaxed) is 10.00am Wednesday 9th June. 

The non-mandatory Tender Briefing session is still scheduled for 1.00 pm Monday 31st May 2021.  Registration is required to receive the link to this tender briefing session.

Posted on 27/05/2021 14:02 by Goulburn-Murray Water