WPS Detail — Procedure record & validation findings

Qualified by PQR PQR-IEW-2025-101. Traceability established.

Base metal group P-No. 1 Gr.2 — SA-516 Gr.70 (N).

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

Range 5–40 mm within qualified 1.5–40 mm for 20 mm test coupon.

Commercial range 5–40 mm is within conventional procedure limits.

Small-bore root check applicable to piping only.

Preheat ≥ 95°C satisfies the 65°C minimum for P-No. 1 base metal.

Interpass 250°C within 315°C ceiling.

Thermal window 95–250°C is internally coherent.

PWHT declared as required for 40 mm section — consistent with code thresholds.

PWHT cycle: soak 620°C for 2 h — parameters recorded on the WPS.

Soak 620°C inside the P-No. 1 band (590–680°C); hold time adequate.

F-No. 4 (E7018-1 H4R) is consistent with SMAW.

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

SMAW is flux-shielded; external shielding correctly marked N/A.

SMAW — backing gas not driven by process.

Flux process — flow rate not applicable.

DCEP polarity consistent with SMAW and E7018-1 H4R.

Amperage 90–150 A inside the SMAW operating envelope.

Voltage 21–26 V inside the SMAW operating envelope.

Travel speed 80–150 mm/min is plausible for SMAW.

Computed worst-case heat input ≈ 2.92 kJ/mm (declared ceiling 3.2 kJ/mm) — no toughness restriction invoked.

Position 3G is a recognised EN ISO 6947 / QW-461 designation.

Transfer-mode variable applies to GMAW only (SMAW exempt).

SMAW is an admissible process under ASME IX.

Impact regime not invoked for the declared thickness/application.

Tank-specific routing not applicable.

IBR statutory route not applicable to this scope.

Administrative header fields adequately populated for issue.

Group-No. split applies only when notch toughness is specified.