Reply 2019-07project 12 · drawing 2041 rev CComment: the customer asks whether the flange laminate on the tank drawing can be reduced.Reply: The flange laminate holds at the thickness shown on the drawing because the bolt load governs it, not the wall.We can take one ply out of the tank wall if the customer accepts the revised deflection, and the flange stays as drawn.1
Reply 2016-02project 2 · drawing 1048 rev AComment: the customer questions the bolt torque called out on the flange detail.Reply: The torque figure suits the gasket we supply and the stud material shown.If the gasket changes we will reissue the detail with a new figure.
Reply 2016-06project 3 · drawing 1091 rev BComment: the customer asked for the full laminate schedule on the duct wall.Reply: The schedule is tabulated on sheet two of the drawing set, ply by ply and by orientation.Nothing in it moved from the approved submittal.
Reply 2016-11project 5 · drawing 1133 rev AComment: the customer wants the resin cure schedule confirmed before fabrication starts.Reply: The laminate is cured at shop temperature and then post cured on the ramp printed beside the schedule.Cure logs go into the job folder for the customer inspector.
Reply 2017-01project 6 · drawing 1162 rev CComment: the customer questions the flatness tolerance on the mounting face.Reply: The face is machined after cure and holds the tolerance printed on the drawing.Anything tighter needs a fixture we would price separately.
Reply 2017-04project 7 · drawing 1184 rev AComment: the customer asked if the tank can take a top mounted agitator.Reply: Not as drawn.The top head needs a stiffening laminate and a steel backing ring before an agitator mounts to it.6
Reply 2017-09project 8 · drawing 1211 rev BComment: the customer would like the nozzle projections shortened.Reply: Projections shorten to the figure the customer gives, down to the limit set by the flange bolt clearance.Send the figure and we will revise the drawing.8
Reply 2018-02project 9 · drawing 1247 rev AComment: the customer questions the hardware specification on the access hatch.Reply: The hatch hardware is stainless throughout because the duty is wet.Plated steel would not last the design life.
Reply 2018-05project 10 · drawing 1269 rev BComment: the customer asked for the lead time on the two vessels.Reply: Eight weeks from approved drawings for the first vessel and ten weeks for the pair.The cure step sets the floor on both.
Reply 2018-08project 11 · drawing 1288 rev AComment: the customer would like the manway moved to the opposite side.Reply: The manway moves without a laminate change as long as it clears the ladder cage.Field verify the ladder before we cut.
Reply 2018-12project 11 · drawing 1302 rev BComment: the customer wants the veil layer named on the inside face.Reply: The inside face carries a resin rich veil at the thickness noted.It is the same veil used on the earlier duct for this plant.
Reply 2019-03project 12 · drawing 2007 rev AComment: the customer questions the nozzle reinforcement on the large inlet.Reply: The inlet pad is sized for the flange moment and the thermal load together.The pad stays as drawn at the diameter shown.
Reply 2019-05project 12 · drawing 2019 rev BComment: the customer asked why the tank wall steps at the mid height.Reply: The wall steps because the head pressure falls with height, so the lower courses carry more plies than the upper.The step is at the elevation marked on the drawing.3
Reply 2019-10project 13 · drawing 2077 rev AComment: the customer wants the lifting lug positions confirmed.Reply: The lugs sit on the stiffener rings, not on the bare wall.Any other position needs a local laminate build up first.
Reply 2020-01project 14 · drawing 2101 rev CComment: the customer questions the gel time stated for the field joint.Reply: The gel time is set for the ambient band written beside it.Outside that band the joint is made with the alternate hardener we list.
Reply 2020-03project 14 · drawing 2118 rev AComment: the customer would like a thicker flange face for bolt bearing.Reply: The flange face already carries the bearing plies for the stud pattern shown.A thicker face changes the bolt length and the customer would need to confirm it.
Reply 2020-06project 15 · drawing 2140 rev BComment: the customer asked for the inspection hold points.Reply: There are three hold points: after layup, after cure, and before shipment.The customer inspector is welcome at each of them.
Reply 2020-09project 15 · drawing 2166 rev AComment: the customer questions the hoop tolerance on the finished tank.Reply: Out of roundness is held to the figure on the general note.We measure it with a tape at three elevations and log the result.4
Reply 2020-12project 16 · drawing 2190 rev BComment: the customer wants the duct supports moved closer together.Reply: The support spacing follows the deflection limit, so closer supports are always acceptable.Wider spacing would need a new calculation.
Reply 2021-02project 17 · drawing 2214 rev AComment: the customer asked whether the hardware can be plated steel instead.Reply: Plated steel is acceptable in the dry sections only.Anything inside the wet duty stays stainless as drawn.
Reply 2021-05project 17 · drawing 2233 rev CComment: the customer questions the thickness on the bottom knuckle.Reply: The knuckle carries extra plies because it takes the turn of the load.That build up is drawn in the section and is not a tolerance.
Reply 2021-08project 18 · drawing 2261 rev AComment: the customer would like the ladder and platform delivered loose.Reply: Loose delivery suits us.The bracket laminate still goes on in the shop before the tank ships.2
Reply 2021-11project 18 · drawing 2288 rev BComment: the customer asked for the lead time on the duct sections.Reply: Six weeks from approved drawings, with the long sections shipping first.The lead time does not change if the customer adds the spare sections now.
Reply 2022-01project 19 · drawing 2304 rev AComment: the customer questions the resin choice for the higher temperature service.Reply: The resin on the drawing is rated above the stated service temperature with margin.A cheaper resin would sit under it and we do not recommend one.
Reply 2022-04project 19 · drawing 2321 rev BComment: the customer wants the vent nozzle enlarged.Reply: The vent enlarges to the next size without touching the head laminate.The reinforcement pad grows with it, as the table shows.
Reply 2022-07project 20 · drawing 2349 rev AComment: the customer questions the tolerance stack on the bolt circle.Reply: The bolt circle is drilled from a template, so the stack is the template tolerance and nothing more.Mating parts drilled from the same template will line up.
Reply 2022-10project 20 · drawing 2372 rev BComment: the customer asked for a heavier laminate at the saddle contact.Reply: The saddle area already carries a wear laminate wider than the saddle horn.Going heavier there would add stiffness the wall does not want.
Reply 2023-01project 21 · drawing 2401 rev AComment: the customer would like the flange drilled to a different standard.Reply: We drill to whatever standard the customer names, as long as it is on the drawing before layup.Redrilling after cure is not something we do.7
Reply 2023-03project 21 · drawing 2418 rev CComment: the customer questions the shipping split on the tall column.Reply: The column ships in two pieces with a field joint at the elevation marked.The joint laminate is made on site by our crew.
Reply 2023-06project 22 · drawing 2444 rev AComment: the customer wants the inspection report issued before shipment.Reply: The report is issued with the packing list, not after delivery.Cure logs and thickness readings are attached to it.
Reply 2023-09project 22 · drawing 2469 rev BComment: the customer asked if the tank can be built with a flat bottom.Reply: A flat bottom is possible on a full support pad only.On a ring support the bottom stays dished as drawn.5
Reply 2023-12project 23 · drawing 2491 rev AComment: the customer questions the hardware count on the hatch clamps.Reply: The clamp count follows the gasket seating load and the hatch diameter.Fewer clamps would leak at the stated pressure.
Reply 2024-02project 24 · drawing 2512 rev BComment: the customer would like the outside face pigmented.Reply: Pigment goes into the outer resin at the shade the customer picks.It has no effect on the laminate schedule underneath.
Reply 2024-04project 24 · drawing 2530 rev AComment: the customer asked for the tolerance on the nozzle orientation.Reply: Nozzle orientation holds to one degree from the datum shown.Tighter than that needs a machined mounting plate.
Reply 2024-07project 25 · drawing 2558 rev CComment: the customer questions the post cure time on the small vessels.Reply: Post cure runs the same hours on small vessels as on large ones.The clock starts when the laminate reaches temperature, not when the oven does.
Reply 2024-09project 25 · drawing 2577 rev AComment: the customer wants the stiffener spacing opened up.Reply: Wider stiffener spacing means a thicker wall between them, so the total weight goes up.We would rather hold the spacing drawn.
Reply 2024-11project 26 · drawing 2599 rev BComment: the customer asked whether the duct can take a future branch.Reply: A future branch is easy if we laminate a blanked pad in now.Cutting into a finished duct later costs more than the pad does today.
Reply 2025-01project 27 · drawing 2614 rev AComment: the customer questions the lead time stated for the pair of hoods.Reply: The lead time on the hoods is driven by the tooling, which is already in the shop.Both hoods leave in the same week.
Reply 2025-03project 27 · drawing 2631 rev BComment: the customer would like the flange thickness matched to the mating part.Reply: We match the mating thickness only where the bolt length allows it.Otherwise the flange stays at the thickness drawn and the customer supplies longer studs.
Reply 2025-05project 28 · drawing 2652 rev AComment: the customer asked for the resin batch traceability.Reply: Every batch number is logged against the layup shift that used it.The log ships with the inspection report.
Reply 2025-07project 28 · drawing 2670 rev CComment: the customer questions the tolerance on the overall height.Reply: Overall height holds to the figure on the general note, measured cold.The customer should allow for thermal growth in the piping.
Reply 2025-09project 29 · drawing 2688 rev AComment: the customer wants the hold down hardware sized for wind.Reply: The hold down studs are sized for the wind case on the calculation sheet.If the site wind speed changes, send it and we will rerun the case.