WPS Detail — Procedure record & validation findings

Qualified by PQR WPQR-2026-102. Traceability established.

Base metal group P-No. 1 Gr.1 — EN 10025-2 S355J2 / IS 2062 E350BR.

Joint is between identical P-Numbers — no dissimilar-metal restrictions apply.

Range 16–25 mm within qualified 16–25 mm for 25 mm test coupon.

Commercial range 16–25 mm is within conventional procedure limits.

Small-bore root check applicable to piping only.

Preheat ≥ 60°C satisfies the 10°C minimum for P-No. 1 base metal.

Interpass 180°C within 250°C ceiling (toughness-restricted).

Thermal window 60–180°C is internally coherent.

PWHT not invoked — permitted for this material/thickness/code combination.

PWHT not required — cycle parameters not applicable.

PWHT not required — soak band check not applicable.

F-No. 6 (ER70S-6 (G3Si1)) is consistent with GMAW.

A-No. 1 weld deposit is chemically matched to P-No. 1.

Shielding medium “Ar + 18% CO2 (M21, EN ISO 14175)” acceptable for GMAW.

GMAW — backing gas not driven by process.

Flow 18 L/min within the 10–30 L/min band for GMAW.

DCEP polarity consistent with GMAW and ER70S-6 (G3Si1).

Amperage 190–280 A inside the GMAW operating envelope.

Voltage 24–30 V inside the GMAW operating envelope.

Travel speed 300–480 mm/min is plausible for GMAW.

Heat input ≈ 1.68 kJ/mm within 2 kJ/mm toughness ceiling.

Position PF (3G-UP) is a recognised EN ISO 6947 designation.

Transfer mode “spray” recorded and code-permissible.

GMAW is an admissible process under ISO 15614.

Notch-toughness regime declared — impacts covered as supplementary essential variables.

Tank-specific routing not applicable.

IBR statutory route not applicable to this scope.

Administrative header fields adequately populated for issue.

Group No. 1 recorded for notch-toughness control.