Energy infrastructure (GAIL HBJ pipeline): To what capacity was the Hazira–Vijaipur–Jagdishpur (HBJ) gas pipeline upgraded? Original rated capacity = 18.2 MMSCMD (million standard cubic metres per day). Choose the correct upgraded capacity value.

Given data

• HBJ pipeline original capacity = 18.2 MMSCMD.
• Asked: Upgraded capacity after the HBJ Upgradation Project.

Concept/Approach
Capacity upgrades on trunk gas pipelines are reported in MMSCMD (million standard cubic metres per day). The well-known HBJ revamp raised throughput significantly above 18.2.

Step-by-step reasoning
• Compare plausible increments: +1.8 (to 20.0), +4.1 (to 22.3), +11.4 (to 29.6), +15.2 (to 33.4).• Documented upgrade brought the line into the low-30s MMSCMD class → 33.4 MMSCMD.

Verification/Alternative
Industry sources and standard GK references list HBJ's post-upgradation throughput at ~33.4 MMSCMD.

Common pitfalls
Rounding to a nearby figure (≈30) instead of recalling the exact upgraded rating (33.4).

Final Answer
33.4 MMSCMD