What caused the NHPC tunnel disaster in Sikkim’s Namchi?
- Posted on July 22, 2026
- By The Hindu
- 1 Views
- 1 min read
The NHPC tunnel catastrophe in Sikkim's Namchi region exposed critical vulnerabilities in Himalayan infrastructure development. Methane gas accumulation in underground construction triggered the incident, highlighting insufficient safety protocols and geological risk assessments in high-altitude projects. This disaster underscores the necessity for enhanced ventilation systems, rigorous environmental monitoring, and improved worker protection standards in challenging mountainous terrain where natural gas hazards remain underestimated.
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