Instrument installation and commissioning process map

What is in this map

16 steps across 5 swimlanes and 5 phases, with 2 decision points.

Swimlanes (who does the work)

Engineering, Field Service, Calibration Lab, Commissioning and Customer

Phases (left to right)

Preparation, Installation, Checks & Configuration, Testing & Calibration and Commissioning & Handover

Why map this process

Verifying the equipment before any safety preparation begins is the map's first defensive move: a wrong range, transit damage or a tag that does not match the drawing gets logged and corrected at row 5 before the crew has committed to a permit and an install date. Discovering that mismatch after isolation and permit-to-work are already in place wastes exactly the safety preparation this map is careful to sequence after equipment verification, not before it.

Treating calibration as a full sub-process rather than a single checkbox is the map's second defensive move — row 11 explicitly runs the entire Instrument Calibration & Documentation SOP (as-found, adjust, as-left, certificate) as its own step, so commissioning never signs over a loop whose calibration record was abbreviated for the sake of the installation schedule. The acceptance-criteria decision right after it covers loop test AND calibration together, so a loop that tests fine electrically but fails calibration still stops here.

Every step in the map

This is the spreadsheet behind the diagram. The numbers in “Goes to” are row numbers, which is exactly what the editor’s “Line to” column holds — so you can read the flow here and retype any part of it.

The decision points

Every branch in the map, with the label on each outgoing line. These are the questions the process has to be able to answer.

• 4. Instrument **correct, undamaged** and on site?

  Owned by Field Service · Preparation

  • Yes → step 6
  • No → step 5

• 12. Loop test and calibration meet **acceptance criteria**?

  Owned by Field Service · Testing & Calibration

  • Pass → step 14
  • Fail → step 13

Notes on specific steps

These notes travel with the map. In the editor they live in the Notes column and appear when you open a box.

1. Installation work order received

Handoff from the Instrument Selection & Specification SOP once the customer's order is confirmed: instrument type, range, tag number and installation location arrive with the work order.

5. Log **discrepancy**, request replacement or correction

Wrong range, damaged in transit, or the tag doesn't match the drawing — logged here so the correct part is on site before the crew commits to an install date.

11. Calibrate instrument per Instrument Calibration & Documentation SOP

Runs the full Instrument Calibration & Documentation SOP: as-found reading, adjustment if needed, as-left reading, certificate. This row is where that SOP's output becomes an input to commissioning.

14. Commission instrument into live process

First live readings compared against expected process values before the loop is signed over — not just powered on, the instrument has to behave correctly against the real process.

15. Walk customer through installation, sign **handover documentation**

Confirms the instrument's tag, range, calibration certificate and configuration match the specification the customer approved, and that they know how to read it before Insatech leaves site.

Making it yours

The troubleshoot-and-retest loop at row 13 returns specifically to the loop-and-function test (row 10), not to installation or configuration. When adapting this map for your own commissioning sequence, keep that narrow return point: a failed acceptance check usually means the loop or its configuration needs correcting, not that the instrument has to be reinstalled from the mounting up.

What to watch out for

• Do not commission a loop on the strength of first live readings alone. Row 14's note is explicit that commissioning compares those readings against expected process values before the loop is signed over — powering on and reading a plausible number is not the same as behaving correctly against the real process.
• Safety preparation (permit to work, isolation, PPE) belongs after equipment verification, not before. Placing it later in the sequence, at row 6, is deliberate: there is no reason to isolate a process and pull a permit for equipment that turns out to be the wrong part.
• The handover walkthrough (row 15) is not just a courtesy visit. It confirms the instrument's tag, range, calibration certificate and configuration match what the customer originally approved, and that they know how to read it — skipping straight to signature collection loses the one step where a specification mismatch would still surface before custody transfers.

Frequently asked questions