---
title: "Purchase, Service & Calibration of Fusion Boxes"
ocid: "ocds-h6vhtk-04fae6"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fae6"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fae6.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fae6.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NORTHERN GAS NETWORKS LIMITED"
published: "2025-03-31"
---

# Purchase, Service & Calibration of Fusion Boxes

Buyer: NORTHERN GAS NETWORKS LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-04fae6

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## Summary

NORTHERN GAS NETWORKS LIMITED has completed the procurement process for the purchase, service, and calibration of Electrofusion Boxes, including associated spares. The primary industry category is Private Utility, with the procurement directed towards operations within the United Kingdom, specifically in the region of Colton Leeds. The contract, having been awarded to CALDERVALE TECHNOLOGY LIMITED, is set to begin on 1st April 2025 and will extend until 31st March 2028, with potential renewals up to 31st March 2030. This procurement was conducted through a direct award method recognised under regulation 2023/54 of UKPGA, focusing on intellectual property and technical exclusions. The award, classified under both services and goods categories, involves a gross contract value of GBP 1,500,000 and includes electric welding equipment and calibration services.

This tender offers significant opportunities for businesses specialising in manufacturing and servicing high-precision equipment, particularly those familiar with Electrofusion technology. CALDERVALE TECHNOLOGY LIMITED, noted for its compliance and technical expertise in Calder Safe technology, exemplifies a business well-suited for this contract. Companies equipped with similar capabilities and expertise in electrofusion processes, software integration, and high-quality equipment maintenance can find promising opportunities for growth by providing innovative solutions and support within the utility industry. The procurement process explicitly highlights the importance of intellectual property, suggesting that businesses with unique technologies can benefit from similar future contracts.

## Notice

This Contract is for the purchase of Electrofusion Boxes and associated spares, along with the servicing/calibration and repair of the equipment. Caldervale Electrofusion Boxes are already in use across the Network and are critically important pieces of equipment that assist Northern Gas operations on the Network. Used in daily operations to allow the operatives to connect PE pipes and fittings together using a heated fusion process. Northern Gas are unable to tender this equipment due to the Caldervale preloaded/inbuilt software which manages Northern Gases joint management/compliance system for electrofusion joints through Calder Safe technology. New Electrofusion Boxes may be purchased over the lifetime of the contract for replacement of equipment beyond economical repair or if there are future demands for new equipment on the Network.

### Procurement Information

This Contract is for the purchase of Electrofusion Boxes and associated spares, along with the servicing/calibration and repair of the equipment. Caldervale Electrofusion Boxes are already in use across the Network and are critically important pieces of equipment that assist Northern Gas operations on the Network. Used in daily operations to allow the operatives to connect PE pipes and fittings together using a heated fusion process. Northern Gas are unable to tender this equipment due to the Caldervale preloaded/inbuilt software which manages Northern Gases joint management/compliance system for electrofusion joints through Calder Safe technology. New Electrofusion Boxes may be purchased over the lifetime of the contract for replacement of equipment beyond economical repair or if there are future demands for new equipment on the Network.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/012101-2025 |
| Notice type | UK5 - Transparency Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | Not specified |
| Awardee scale | SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 31 Mar 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 31 Mar 2025 |
| Contract period | 31 Mar 2025 - 31 Mar 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £1,500,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NORTHERN GAS NETWORKS LIMITED |
| Locality | COLTON LEEDS |
| Post town | Leeds |
| Postcode | LS15 8TU |
| Country | England |
| ITL 1 | TLE Yorkshire and The Humber |
| ITL 2 | TLE4 West Yorkshire |
| ITL 3 | TLE42 Leeds |
| Local authority | Leeds |
| Electoral ward | Garforth & Swillington |
| Westminster constituency | Leeds East |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | CALDERVALE TECHNOLOGY |

## CPV Codes

### Divisions

- 42 - Industrial machinery
- 50 - Repair and maintenance services

### Codes

- 42662100 - Electric welding equipment
- 50433000 - Calibration services

## Release History

- 31 Mar 2025 at 16:34 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/012101-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/012101-2025
  31st March 2025 - Transparency notice on Find a Tender

## Notice URLs

- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fae6. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04fae6.json.