Section 34 Is Not an Appeal in Disguise: Delhi High Court Upholds 484-Day Extension in IRCON–Afcons Tunnel Arbitration

"Critical Path Determination by Technical Tribunal Cannot Be Rewritten Under Section 34", In a significant pronouncement reinforcing the limited scope of judicial interference under Section 34 of the Arbitration and Conciliation Act, 1996, the Delhi High Court dismissed a challenge to an arbitral award granting 484 days’ extension of time and setting aside liquidated damages in a major railway tunnel construction project.

Justice Amit Bansal held that the arbitral findings on adverse geology, law and order disturbances, inclement weather and determination of “critical path” were based on appreciation of evidence and plausible interpretation of the contract. The Court reiterated that it cannot re-appreciate evidence or sit in appeal over arbitral findings merely because another view is possible.

The impugned award was thus upheld in its entirety.

Kashmir Railway Tunnel Project and Contractual Milestones

The dispute arose out of a Contract dated 14 March 2014 executed between IRCON International Ltd., a Government of India undertaking, and Afcons Infrastructure Ltd. for construction of Tunnel T-74R in the Udhampur–Srinagar–Baramulla Railway Line project.

The Project comprised five components: construction of ADIT, main tunnel Banihal, main tunnel Katra, escape tunnel Banihal and escape tunnel Katra. The contract period was thirty-three months, with seventeen contractual milestones designated as “Key Dates” under Appendix XV.

Delays occurred in achieving several key dates. Afcons attributed the delay to unanticipated geological conditions, exceptional rainfall, and law and order disturbances including labour unrest and local disruptions. IRCON, however, granted only 21 days’ extension and imposed liquidated damages exceeding ₹9.69 crores, besides invoking bank guarantees.

Afcons invoked arbitration. By award dated 5 March 2019, the Arbitral Tribunal granted 484 days’ extension up to 15 September 2016, declared levy of liquidated damages illegal, and directed refund/release of bank guarantees.

IRCON challenged the award under Section 34.

Scope of Interference Under Section 34

At the outset, the Court revisited the principles laid down in Associate Builders, Ssangyong, DMRC, and most recently OPG Power Generation. Quoting from OPG Power Generation, the Court emphasized:

"A possible view by the arbitrator on facts is to be respected as the arbitrator is the ultimate master of the quantity and quality of evidence to be relied upon."

Justice Bansal reiterated that an award can be interfered with only if it is perverse, based on no evidence, ignores vital evidence, or reflects patent illegality. Mere erroneous appreciation of facts or alternate interpretation is not a ground for interference.

Extension of Time: Geological Variations, Weather and Law & Order Issues

The Tribunal found that actual rock mass encountered differed materially from the geological data in the tender documents. It also accepted evidence of inclement weather and law and order disturbances.

On proportional computation of delay in excavation of ADIT (KD-03) and Main Tunnel Banihal (KD-14), the Tribunal determined that 1013 days were required as against 529 originally contemplated, leading to an extension of 484 days.

The High Court held that the Tribunal had carefully analysed evidence and contractual clauses, particularly Clause 27 of the Special Conditions of Contract-I, and its conclusions were reasoned and plausible.

Any interference, the Court observed, would amount to re-appreciation of evidence, which is impermissible under Section 34.

Liquidated Damages: Pre-Condition of Delay Attribution

IRCON argued that it was entitled to levy liquidated damages pending consideration of extension.

The Tribunal rejected this, holding that under Clause 27, the Engineer must first determine permissible extension and attribute delay before levying liquidated damages.

The Tribunal observed: "We do not see any provision in the contract specifically providing for the Respondent to deduct liquidated damages and thereafter carrying out an analysis of the delays… The levy of liquidated damages and its deductions were therefore prima facie illegal and not in accordance with the contract."

The High Court found this interpretation to be a plausible reading of the contract and refused to substitute its own interpretation.

Critical Path Analysis: Main Tunnel Banihal as Determinative Milestone

One of IRCON’s principal objections was that the Tribunal applied the concept of “critical path” though the contract did not expressly use that term, and granted uniform extension for all tunnels.

The Tribunal had held that completion of ADIT followed by excavation of Main Tunnel Banihal (KD-14) was on the “critical path,” meaning any delay therein would impact overall project completion. Other tunnels were being executed concurrently and would be subsumed within this extended period.

The Court referred to international jurisprudence including Mirant Asia-Pacific Construction and Haney v. United States, and noted that “critical path” is a globally recognised methodology in construction management.

Justice Bansal held: "The determination of main tunnel Banihal as the ‘critical path’ by the Arbitral Tribunal would not amount to rewriting of the Contract and the said finding cannot be considered as perverse or patently illegal."

The Tribunal, comprising technically qualified members, was competent to determine sequencing and workflow logic.

Presumption of Loss in Public Utility Contracts

IRCON argued that in public utility infrastructure projects, loss due to delay should be presumed.

The Tribunal, however, found that no specific loss was proved. The only alleged loss was supervision cost, which the Tribunal held would have been incurred in any event since other stretches of the project were incomplete.

The High Court upheld this factual finding, observing that it was neither perverse nor unsupported by evidence.

In any event, since the delay was held not attributable to Afcons, the question of liquidated damages became academic.

No Patent Illegality, No Perversity

Summing up, the Court held that: "It cannot be said that the view taken by the Arbitral Tribunal was not a plausible view. Thus, this is not a case where the Impugned Award can be set aside on the basis of patent illegality."

Finding no ground under Section 34, the petition was dismissed and the award sustained in full.

The judgment reinforces judicial discipline in arbitration matters and underscores that Section 34 is not an appellate forum to revisit factual determinations or contractual interpretations by a technically qualified arbitral tribunal.

Date of Decision: 13 February 2026