Fill the isolation rows, then ① ISOLATION APPROVED.
COMPANY
LOGO
LOGO
ISOLATION CERTIFICATE
Section 1 — Isolations
| SR NO | Isolation Description | Type | Tag No | Open/Close | Isolations — Authorization | Isolations — Done By | De-Isolation — Authorization 🔒 AT HAND-BACK |
De-Isolation — Done By 🔒 AT HAND-BACK |
Actions | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name / Sign | Date | Name / Sign | Date | Name / Sign | Date | Name / Sign | Date | ||||||
Section 2 — Isolation Codes (Legend)
SPADES
BLINDB
SPECTACLE BLINDSB
SPOOL REMOVALSP
ELECTRICALEL
INSTRUMENT BYPASSINS
VALVEV
Section 3 — Isolation Codes (PTW / Authorization)
| SR NO | Issue Authority | Performing Party | PTW No | PTW Work Description | Isolations Verified (Name / Sign / Date) |
PTW Close |
De-Isolations Verified (Name / Sign / Date) 🔒 AVAILABLE AT HAND-BACK |
Actions |
|---|
Section 4 — Zero Energy Demonstration (Daily)
| Date | PTW No | Zero Energy Demonstrated |
LOTO Box Locked |
Area Operator Sign |
Performing Party Sign |
PTW Issued |
Actions |
|---|
100%
12-IV001A
CLOSE
12-IV001B
CLOSE
12-IV002A
CLOSE
12-IV002B
CLOSE
12-IV003A
CLOSE
12-IV003B
CLOSE
12-IV004A
CLOSE
12-IV004B
CLOSE
12-IV005A
CLOSE
12-IV005B
CLOSE
90-IV001
CLOSE
BKR P001AENERGIZED
BKR P001BENERGIZED
P001A PBON
P001B PBON
12-P001A
12-P001B
12-PI001A
---
12-PI001B
---
12-PI002
---
12-LI002
---
12-PDI001A
---
12-PDI001B
---
---
---
12-FIC001
---
| ID | LEFT% | TOP% |
|---|
TAG
Controller
✕
DEV
—
---
▸ TUNING PARAMETERS
PB
Ti
Td
LOTO SUPPORT
Hand-over controls, grouped by workflow stage
1 · PREPARE
Equipment and utilities brought to the job before any isolation.
2 · ISOLATE & RENDER SAFE
Stored energy made safe — flush the line through.
FLUSH
0:00 / 5:00
2b · APPLY LOCKS & TAGS
Right-click any isolation point on the P&ID to apply or remove a lock or tag. The key box holds the keys — right-click it to close it and apply your party lock.
LOCK BOX
EL
V
S/B
🏷 TAG
KEY BOX
OPEN
0 keys
Colour legend — the lock COLOUR must match the isolation type. Apply locks and tags by RIGHT-CLICKING a point on the P&ID (Page 2); isolate the point first.
3 · VERIFY
Prove zero energy before the line is opened. Choose the right instrument for the service fluid.
GAS TEST — SHARED COMPONENT DEMO
STANDALONE · NOT WIRED TO ANY MODULE · F-44.6 SINGLE DEFINITION POINT
1 · PURGE THE LINE
Readings derive from what you actually do — valve opening, differential pressure and duration. Pressing TEST repeatedly changes nothing; a shut valve displaces no volume.
LEL
—
H₂S
—
O₂
—
VOL PURGED
0.00
2 · TAKE A READING
The purpose decides which gases are judged. Run a good nitrogen purge, pass the PURGE test, then try VESSEL ENTRY on the same line.
Ready. Line is fresh out of hydrocarbon service — LEL over range.
⚠ THE LESSON THIS TEACHES
A nitrogen-purged line reads LEL 0, H₂S 0 — perfectly clean — and O₂ near zero. It passes a purge test and would kill anyone who entered it. A clean gas test is not an entry permit. Entry needs a subsequent air purge to restore O₂ to 20.9%.
⚠ DEMO ONLY — NOT THE PRODUCT PATH. This page mirrors the physics in browser JS so the component demos with no engine running. A scored module must inherit
GasTestMixin and route everything through the server: the browser holds no limits, runs no maths, and decides nothing. Purge effectiveness is read from plant state server-side, and verdicts are re-judged against the server's own reading.
Engine:
Meter UI:
Limits are cited defaults, subject to F-45.5 competent-person review (OSH-3) before any trainee is scored against them.
engine/gas_test.py — limits, purposes, physics, and GasTestMixin for any module.Meter UI:
gas_meter.js — renders and reports; never decides what is safe.Limits are cited defaults, subject to F-45.5 competent-person review (OSH-3) before any trainee is scored against them.