IDG's!
As one can clearly see by the photo so kindly posted by spannersatcx, the NAI valve sits aft of the fan rub-strip area, noted by the position of the kevlar wrapping(beige yellow material) around this fan frame which is the final containment medium of a fan blade loss & the deadly fragments of metal that result!
Hence, no rupture upstream of the valve possible, as this would be behind the fan & outside the strengthened fan case, & underneath the fan cowls, which were not harmed, nor I believe if the valve were open, there would or should be no pressure build up in the nose cowl as pressure relief panels would pop long before the cowl structure bursts!