PSA 10.3 — Site Checks: The Walkdown, Spring Hot/Cold Settings, and As-Built Validation
Pre-commissioning walkdown, line cold. You stop at variable spring SP-1207 on the 12″ hot-oil line of Lesson 7.1 and read the load scale on the can. It says 12.0 kN .
You open the spring schedule. It says:
SP-1207 hot load W_h 12.0 kN cold load W_c 14.8 kN rate 70 N/mm travel 40 mm UP range 8.93 – 16.07 kN working travel 102 mm The indicator matches a number on the schedule exactly. Commit to an answer before reading on: is this hanger set correctly?
It is not. A cold pipe must read the cold load. The fitter set…
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