A small part of the daily review report maintenance document template.

A: A: Needs CO2 partial pressure data; none is stated and H2S dominates the chemistry here. B: SSC needs hardness and tensile stress context; not implied for a carbon steel vessel shell. C: Wet H2S with free water points straight at general sour corrosion and FeS scale. D: Possible during layup, but the condition is online operation, not a shutdown artifact.

A: A: Pusher elastomers struggle at 180°C; that’s a heat limit issue. B: Plan 53B is used for toxic or zero‑emission duty; overkill without H2S. C: Metal bellows tolerates temperature and Plan 21 knocks heat out before the faces. D: Packing doesn’t meet API 610 leakage expectations for this service.

A: A: The HH pressure trip still isolates inflow; slow rise is covered. B: Fire case needs a relief path sized per API 521; trips don’t handle external heat flux. C: Inlet ESD addresses this unless it also fails. D: Thermal expansion is a local liquid issue, usually handled by a small thermal relief, not the main PSV.

A: A: Zone B tops out around 4.5 mm/s for this machine class. B: 6.2 mm/s sits in Zone C; you document and plan work. C: Zone D starts above roughly 7.1 mm/s. D: Mixing the upper limit of Zone D with acceptance logic drops the intermediate band.