CT 256 - Impianti geotermici a bassa temperatura con pompa di calore

31/07/2019

Votazione

Activation of the PWI Design and construction of borehole heat exchanger

CEN/TC 451

063

17/09/2019

02/09/2019

Votazione

Liaison request CEN/TC 288

CEN/TC 451

065

16/09/2019

05/09/2019

Votazione

Liaison request CEN/TC 228

CEN/TC 451

066

24/09/2019

24/01/2020

Votazione

Proposal for clause 21 Project design documents

CEN/TC 451/WG 1

122

05/02/2020

24/01/2020

Votazione

Proposal for clause 20 Evaluation of the design 2020-01-17

CEN/TC 451/WG 1

121

05/02/2020

06/02/2020

Votazione

Proposal for clause 19 Control, maintenance and monitoring

CEN/TC 451/WG 1

123

14/02/2020

06/02/2020

Votazione

Revised proposal for clause 17 Pumping test

CEN/TC 451/WG 1

126

14/02/2020

10/11/2020

Votazione

Survey - Date for next web meeting

CEN/TC 451/WG 1

144

12/11/2020

07/01/2021

Votazione

Survey - Date for next web meeting

CEN/TC 451/WG 1

165

18/01/2021

08/01/2021

Votazione

Activation of PWI on Water Wells - CEN TC 451/WG 1

CEN/TC 451/WG 1

078

26/02/2021

07/06/2021

Votazione

Survey - Date for next web meeting

CEN/TC 451/WG 1

180

12/06/2021

14/09/2021

Votazione

EN 17522 - 9 month Tolerance Request

CEN/TC 451

01/10/2021

09/11/2021

Votazione

Appointment new Convenor WG 1

CEN/TC 451

26/11/2021

13/01/2022

Votazione

Splitting the project “Water Wells” in 3 parts

CEN/TC 451

04/02/2022

07/07/2022

Votazione

Survey for date of next web meeting

CEN/TC 451/WG 1

205

11/07/2022

04/10/2022

Votazione

Adoption of a New Work Item: Water Wells - Design

CEN/TC 451

24/11/2022

04/10/2022

Votazione

Adoption of a PWI: Water Wells - Construction

CEN/TC 451

24/11/2022

04/10/2022

Votazione

Adoption of a PWI: Water Wells - Operation and abandoning

CEN/TC 451

24/11/2022

01/03/2023

Votazione

prEN 00451003 (E) Design - pjrev 2023-02-13

CEN/TC 451/WG 1

228

10/03/2023

13/06/2023

Votazione

Survey for date of next (web) meeting - Reserved N-number

CEN/TC 451/WG 1

229

14/06/2023

14/06/2023

Votazione

9-month tolerance request - "Water wells – Part 1 Design"

CEN/TC 451

094

04/07/2023