Answer / carl_ellis

A loop folder is a manila folder or an electronic folder
that contains an assortment of documents related to the
instrumentation for a specific process control loop.

The exact contents of a loop folder are defined in a
project's standards/requirements.

A loop folder typically includes
- instrument manufacturer's spec/data sheet
- P&ID
- loop diagram
- loop check test sheet/checklist
- instrument calibration cert
- plot plan/location diagram

It can include
- loop test procedure
- hook-up diagram/instructions
- control/function narrative
- alarm setpoint list
- construction completion certificate
- interlock diagram
- flow sizing sheet
- CoC Certificate of Conformance
- COE Certificate of Origin
- MRT Material Test Report
- NACE certificate
- instrument configuration

(Compliments to Iris)

Carl Ellis
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