The Uniform Network Code

On this page you are able to access a full version of the Uniform Network Code. The current version is 3.09, as at 22 June 2009.

If you already have an up to date copy of the UNC and only require the latest set of updated files, please select the Updates link on the left of this page.

Binder 1 - General

01 January 2006
General Front Cover
55 KB
01 January 2006
Table of Contents
71 KB
03 June 2009
Defined Terms Listing
2619 KB
22 June 2009
Modification History
679 KB
01 January 2006
UNC Introduction
72 KB
01 January 2006
TD - Table of Contents
77 KB
01 January 2006
TDI - General
95 KB
01 January 2006
TDIIA - General
112 KB
06 May 2008
TDIIB - Relevant Transporters
124 KB
29 April 2009
TDIIC - Transitional Rules
833 KB
21 July 2006
TDIID - Flexibility Bidding
234 KB
01 January 2006
TDIII - Offtake Arrangements Document (inc. Part IV - Modification Rules)
125 KB
17 April 2009
Modification Rules
531 KB
01 January 2006
GTA - Dispute Resolution
192 KB
01 March 2006
GTB - General
226 KB
02 June 2009
GTC - Interpretation
240 KB

Binder 2 - Transportation Principal Document

01 January 2006
TPD Front Cover
54 KB
01 January 2006
TPD Table of Contents
99 KB
29 April 2009
Section A - System Classification
170 KB
03 June 2009
Section B - System Use and Capacity
1250 KB
01 January 2006
Section C - Nominations
222 KB
01 November 2007
Section D - Operational Balancing and Trading Arrangements
293 KB
21 February 2009
Section E - Daily Quantities, Imbalances and Reconciliation
504 KB
01 April 2009
Section F - System Clearing, Balancing Charges and Neutrality
275 KB
29 April 2009
Section G - Supply Points
1195 KB
01 April 2009
Section H - Demand Estimation and Demand Forecasting
286 KB
29 April 2009
Section I - Entry Requirements
297 KB
29 April 2009
Section J - Exit Requirements
524 KB
27 April 2009
Section K - Operating Margins
239 KB
01 March 2006
Section L - Maintenance and Operational Planning
204 KB
22 June 2009
Section M - Supply Point Metering
555 KB
29 December 2008
Section N - Shrinkage
181 KB
25 June 2007
Section O - System Planning
157 KB
29 April 2009
Section Q - Emergencies
375 KB
29 April 2009
Section R - Storage
203 KB
01 April 2009
Section S - Invoicing and Payment
456 KB
01 April 2009
Section U - UK Link
465 KB
29 April 2009
Section V - General
754 KB
06 February 2009
Section X - Energy Balancing Credit Management
325 KB
29 April 2009
Section Z - National Grid LNG Storage Facilities
593 KB

Binder 3 - Offtake Arrangements Document

01 January 2006
OAD Front Cover
54 KB
01 January 2006
OAD Table of Contents
92 KB
01 January 2006
Section A - Scope and Classification
137 KB
01 January 2006
Section B - Connection Facilities
417 KB
21 July 2006
Section C - Safety and Emergency
219 KB
01 September 2008
Section D - Measurements
379 KB
01 August 2008
Section E - Telemetry, etc
407 KB
01 January 2006
Section F - Determination of Calorific Value
174 KB
01 January 2006
Section G - Maintenance
283 KB
01 April 2009
Section H - NTS Long Term Demand Forecasting
262 KB
29 April 2009
Section I - NTS Operational Flows
251 KB
01 January 2006
Section J - LDZ/LDZ Offtakes - Planning and Operational Flows
272 KB
22 October 2007
Section K - LDZ System Entry Points
166 KB
01 January 2006
Section L - Cost Recovery and Invoicing
185 KB
01 January 2006
Section M - Information Flows
139 KB
01 January 2006
Section N - General
315 KB
01 January 2006
Appendices
176 KB

Consolidated Code

29 April 2009
Consolidated Code
On this page you are able to access a full set of printable versions of the Uniform Network Code. Each set is prepared at the end of a period, commencing with the end of Quarter 1, 2009 which ...

Consents to Modify

07 September 2006
Consents to Modify
The Gas Transporters Licence provides, subject to Ofgem approval, for the Uniform Network Code to be modified without the need to go through the full modification process. This 'Consent to Modify' ...
 

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