CPCB issues guidelines for Gold Assaying and Hallmarking centres to prevent pollution

Oct 28, 2020 | by Avantis RegTech Legal Research Team

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EHS Compliance

The Central Pollution Control Board (CPCB) has issued guidelines for Gold Assaying and Hallmarking centres to bring these centres under regulatory framework of environment laws. Main sources of pollution in Fire Assay Testing and other environmental issues associated with hallmarking centres are air pollution, water pollution, hazardous waste during the process of cupellation, cupels become contaminated due to the absorption of lead and other heavy metals.

Guidelines for Gold Assaying and Hallmarking centres are as follows:

• The emissions from cupellation and parting process should be channelized through a well-designed suction hood and duct arrangement system to control lead and nitric acid fumes.

• The extracted fumes from cupellation and parting should be scrubbed by installing well designed scrubbing system for removing the pollutants from the exhausted air & discharged through appropriate stack as per SPCBs consent conditions.

• The adequacy/efficiency of the Scrubber system installed need to be verified by the SPCBs or through Expert institutions.

• The spent acid generated from parting acid should be sent to TSDF or neutralized before its disposal. These Hallmarking centres should have facilities of pH testing like litmus paper, pH meter to check that the spent acid is neutralized.

• The Spent cupels/scrubbed water containing lead should be sent to TSDF or to the authorized registered lead recyclers dealers.

• Manifest/records should be maintained for storage and disposal of spent acid/cupels/scrubbed water residue generated during the process.

• Proper personal protection equipment’s such as Face Shields, Helmets, Acid Gloves, First Aid Box, etc. must be used by the personals carrying out fire assay & parting test.

• All the gold assaying and hallmarking centres shall obtain necessary Consents under the provisions of Water (Prevention and Control of Pollution) Act, 1974 & Air (Prevention and Control of Pollution) Act, 1981 & Hazardous and Other Wastes (Management & Transboundary Movement) Rules, 2016 from the concerned State Pollution Control Boards.

• The Gold Hallmarking Assaying facilities/Centres should be established as per the siting policies/guidelines of local administration.

• The Blood test of worker for lead, should be done once in a year who has worked for at least 6 months in such facility.


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