TPR Discharge Pipe Piped Correctly?

[srechkin (Simon Rechkin)]

@tglaze

it can’t discharge into “trapped” drainage

Of course it can. The TPRV discharge pipe, before the air-gap, cannot be trapped, but the drain (or a waste receptor) the discharge pipe discharges into can be, not a problem. The issue with trapping the discharge pipe itself is if it gets clogged now you have a potential ticking bomb.