Notice on soliciting comments for the group standard Marine fiber optic gyro compass standard and the three other group standards
CIN [2025] NO.6-010
To all relevant units:
According to the revision plan of the group standard of China Institute of Navigation(CIN), four group standards for Marine fiber optic gyro compass standard, Technical specification for construction of immersed tube tunnel joint, Technical code for design and construction of pre-bedding method immersed tunnel foundation bed, and Standard for fire protection design and construction of immersed composite steel concrete tunnel structure , organized and compiled by our institute, has now been drafted for soliciting feedback.
In accordance with the requirements of the "Management Measures for Group Standards of China Institute of Navigation," and to ensure the standards are science-based, rigorous, and applicable, we are now sending the draft of the group standard and the compilation instructions to your unit.
Please provide your comments and feedback sheet to tuanbiao@cinnet.cn by May 17, 2025.
If there is no reply by the deadline, it will be considered as having no opinion. Thank you for your support to the group standard work of the China Institute of Navigation!
Contact: Zhao Zicong, Department of Science and Technology Services
Phone: 18801044778
Attachments:
1. Marine fiber optic gyro compass standard (Draft for Soliciting Comments)
2. Marine fiber optic gyro compass standard (Compilation Instructions)
3. Technical specification for construction of immersed tube tunnel joint (Draft for Soliciting Comments)
4. Technical specification for construction of immersed tube tunnel joint (Compilation Instructions)
5. Technical code for design and construction of pre-bedding method immersed tunnel foundation bed (Draft for Soliciting Comments)
6. Technical code for design and construction of pre-bedding method immersed tunnel foundation bed (Compilation Instructions)
7. Standard for fire protection design and construction of immersed composite steel concrete tunnel structure (Draft for Soliciting Comments)
8. Standard for fire protection design and construction of immersed composite steel concrete tunnel structure (Compilation Instructions)
9. Feedback sheet for Soliciting Comments
China Institute of Navigation
April 17, 2025
