Weldability

Toughness

Strength

Cooling rate

Yield.

Strain.

Stress.

Plasticity.

Three out of four of the required test specimens must pass.

The test coupon fails and a new coupon is required.

Two additional test specimens from the coupon must be tested and pass.

The WPS fails.

Assure that the welded material has sufficient yield strength to avoid brittle fracture.

Assure that the welded material has sufficient ductility to assist brittle fracture.

Assure that the welded material has sufficient toughness to resist brittle fracture.

Assure that the welded material has sufficient tensile strength to avoid failure at design loads.

Determining that the required sensitivity of the radiograph is achieved

Marking the radiographs with a definite identifying characteristic

Ascertaining how much radiation the source has penetrated the material

Establishing the depth that the radiation source penetrates

Yes, but only for thicknesses greater than .280"

No, the material thickness on the PQR should be .375"

Yes, the PQR qualifies the ranges as stated on the WPS

No, the PQR thickness should have been .560"

0.30%

0.35%

0.42%

0.48%