Closed
Cement Paste Fill Plant, Paste Surface Reticulation and Underground Piping Distribution System
Tender ID: 486615
Tender Details
Organisation:
Tender #:
-
Status:
Closed
Publish Date:
29 March 2022
Closing Date:
29 March 2022
Tender Description
BHP Olympic Dam Pty Ltd (BHP) is seeking preliminary supplier information and expressions of interest for sourcing options regarding a prospective new Cemented Paste Fill (CPF) plant, paste surface reticulation and underground piping distribution systems described in further details below.
If you, the Supplier, would like to participate in this Expression of Interest (EOI) please complete the Supplier Questionnaire form and submit your response (together with any supporting information) by the EOI closing deadline.
This EOI comprises of the following documents:
1. This EOI Letter
2. Supplier Questionnaire
The information contained in this EOI are provided to you only for the purpose of assisting you in preparing a response to this EOI (and must not be used, copied, reproduced, disclosed or distributed in whole or in part for any other purpose). The Supplier must consider and maintain as confidential, all information provided to the Supplier by BHP as part of this EOI process.
The participation in this EOI and submission of the questionnaire does not imply that the Supplier is in any way a preferred supplier to BHP or that it will be included in any future procurement activities of BHP.
Background Information
Cemented Aggregate Fill (CAF) is currently used for the BHP Olympic Dam (OD) underground operation to backfill stopes as part of the mining method defined as Sub-Level Open Stoping (SLOS).
In 2021, BHP completed a preliminary study of future backfill requirements.
As a result of the study, BHP are considering options relating to a Cemented Paste Fill (CPF) solution, including a new CPF plant, paste surface reticulation and underground piping distribution systems and all required services and upgrades to existing plant to support the CPF operation. The existing CAF plant (ECAF) will be required to continue operations in addition to the CPF plant, to meet the total backfill production demand as per the design criteria.
The key requirements for the new CPF plant, paste surface reticulation and underground piping distribution systems in accordance with the current design criteria include:
CPF plant will have a production capacity of 800,000 m3/yr;
CPF plant will have an instantaneous throughput of 152 m3/hr; and
Backfill fines sourcing and mix recipes for CPF Plant as listed in Table 1
A preliminary concept design has been developed. An overview of the CPF Plant, paste surface reticulation and underground piping distribution systems as they currently stand is as follows:
New CPF plant, including disc filters, mixing equipment, cement storage and handling facilities, tanks, pumps, piping, filter cake conveyor, transformer, substation and all ancillary equipment, structures, mine water/scuttle dams and infrastructure; and
Paste reticulation and underground piping distribution systems, including positive displacement pump, surface reticulation piping, cased boreholes, underground reticulation piping to target stopes, facility to flush/clear the system and paste barricading at stopes.
Appendices A and B (Site Plan and PFDs) provide additional detail.
The following items are key elements that BHP wishes the Supplier to consider in its EOI response when completing the Supplier Questionnaire:
Design, supply and installation of proven CPF Plant, paste reticulation and underground piping distribution systems in similar applications, with details of experience with the general scope items as described in this document;
References for operating plants of similar type and size;
High quality, and long life plant;
Low capital, and operating costs;
Modularisation options to minimize site erection works;
Experience working with mining operating companies or major consultants; and
Experience in fabrication and onsite construction management in underground hard rock mines.
Location
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