Document Details |
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| Name of Department/Committee : | CHD 30 |
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| Document Number : | CHD 30 ( 25257) |
| Document Title [English] : | Measurement of Environmental Tritium in Natural Water |
| Document Title [Hindi] : | प्राकृतिक जल में पर्यावरणीय ट्रिटियम का मापन |
| Document Type : | New |
| Language : | English |
| Priority : | 2 |
| ICS Code : | 13.280 |
| Date of Project Approval : | 12-04-2024 |
| Standards to be Superseded : | |
Classification Details |
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| Group : | Chemicals, Plastics and their Products including packaging and Environment |
| Sub Group : | Chemicals |
| Sub Sub Group : | Radioactive Residue Test Methods |
| Aspects : | Methods of tests |
| Risk : | Low |
| Certification : | Not Certifiable |
| Short Commom Man's Title : | |
| ITCHS Code : | |
| Ministry : |
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| Sustainable development Goals : |
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| Degree of Equivalence : | Indigenous |
| Identical/Equivalent Standards : | |
| Organization Type: | |
| Sl.No. | Synosis Points | |
| 1 | Tritium is one of the naturally occurring isotopes of hydrogen and is radioactive. There are 18 isotopologues of water one of which is HTO. Thus, making tritium an integral part of water molecule. Tritium is produced in stratosphere by spallation reaction of nitrogen with cosmic ray neutrons. The steady state inventory of tritium is about 11g/day. The produced tritium is oxidised and leads to formation of tritiated water which reaches troposphere through the mixing layer between stratosphere and troposphere. This process is specially enhanced during the spring season and is known as spring leak. The time taken by the tritium from its production to enter the hydrological cycle is about 30 days. The environmental input of tritium is very low, hence, for measurement of tritium in natural waters preconcentration of tritium is essential. Environmental tritium plays an important role in estimating the residence time of water and evaluating the groundwater dynamics. The half-life of tritium i | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 12-04-2024 | ------- | ||
| 2 | P-Draft | 12-04-2024 | Covering letter generated | ------- | |
| 3 | P-Draft | 12-04-2024 | Duration : 21 Days Remarks : The Sectional Committee CHD 30 in its 28th meeting had decided to circulate this document to committee members for their inputs for 21 days |
CHD 30, CHD 30 : 1, CHD 30 : 2, CHD 30 : 3, CHD 30 : 4, , , | ------- |
| 4 | Skipped to W-Draft | 22-05-2024 | Stage-Changed | ------- | |
| 5 | WC Draft | 22-05-2024 | Duration : 62 Days Submitted for HOD approval Remarks : The Sectional Committee CHD 30 in its 29th meeting had decided to send the document for wide circulation for a period of 60 days Kindly approve |
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| 6 | WC Draft | 23-05-2024 | WC rejected by HOD Remarks: Please recheck the scope. |
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| 7 | WC Draft | 28-05-2024 | Duration : 62 Days Submitted for HOD approval Remarks : Suitable Corrections have been done Kindly approve |
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| 8 | WC Draft | 28-05-2024 | WC approved by HOD |
CHDC CHD 30 : 1, CHD 30 : 2, CHD 30 : 3, CHD 30 : 4, CHD 30 : 4 : WG1, CHD 30 : 4 : WG2, CHD 30 : 4 : WG3, CHD 30 : 4 : WG4, CHD 30 : 4 : WG5, | ------- |