Chamber Checks

  1. Chamber Checks External · No. 2

    Chamber air secondary isolation valve

    DEVIATION expected Closed

    Open at king valve

  2. Chamber Checks External · No. 11

    Main lock bibs dump

    DEVIATION expected Closed

    Open

  3. Chamber Checks External · No. 12

    Entry lock bibs dump

    DEVIATION expected Closed

    Open

  4. Chamber Checks External · No. 18

    Medical lock exhaust valve

    DEVIATION expected Open

    Closed

  5. Chamber Checks Internal · No. 7

    Main lock bibs inlet valve

    DEVIATION expected Closed

    Open

  6. Chamber Checks Internal · No. 8

    Entry lock bibs inlet valve

    DEVIATION expected Closed

    Open

  7. Chamber Checks General · No. 13

    Secure O2 at quad until required for use

    NOT DONE

    In use

Air Dive DDC

OEG-SUB-DIV-CHL-005 v01

Date
16/07/2026
Shift
AM
Name
Gerard Brennan
Position
diver
Submitted
16/07/2026 11:05
Checklist
version 1
Download PDF

Chamber Checks External

No. Description Check
1 Chamber primary air isolation valve Open
2 Chamber air secondary isolation valve Open at king valve DEVIATION expected Closed
3 Main lock pressurisation valve Closed
4 Entry lock pressurisation valve Closed
5 Main lock exhaust valve Closed
6 Entry lock exhaust valve Closed
7 Main lock gauge isolation valve Open
8 Entry lock gauge isolation valve Open
9 Main lock bibs inlet valve Closed
10 Entry lock bibs inlet valve Closed
11 Main lock bibs dump Open DEVIATION expected Closed
12 Entry lock bibs dump Open DEVIATION expected Closed
13 Main lock bilge drain valve Closed
14 Entry lock bilge drain valve Closed
15 Entry lock relief valve secured Open
16 Main lock relief valve secured Open
17 Medical lock gauge valve Open
18 Medical lock exhaust valve Closed DEVIATION expected Open

Chamber Checks Internal

No. Description Check
1 Main lock pressurisation valve Open
2 Entry lock pressurisation valve Open
3 Main lock exhaust valve Open
4 Entry lock exhaust valve Open
5 Main lock gauge isolation valve Open
6 Entry lock gauge isolation valve Open
7 Main lock bibs inlet valve Open DEVIATION expected Closed
8 Entry lock bibs inlet valve Open DEVIATION expected Closed
9 Main lock bibs dump valve Open
10 Entry lock bibs dump valve Open
11 Main lock bilge drain valve Closed
12 Entry lock bilge drain valve Closed
13 Entry lock relief valve secured Open
14 Main lock relief valve secured Open
15 Medical lock closed and dogged with valve Closed
16 Main lock door equalising valve Open
17 Entry lock door equalising valve Closed

Chamber Checks General

No. Description Check
1 Open primary supply to DDC and check HP contents 205.0 bar
2 Open secondary supply to DDC and check HP contents 205.0 bar
3 Open O2 supply to bibs and check HP contents 138.0 bar
4 Check He O2 Contents 0.0 bar
5 Function primary supply to main lock ✓
6 Function primary supply to entry lock ✓
7 Function secondary supply to main lock ✓
8 Function secondary supply to entry lock ✓
9 Close secondary supply and open primary supply ✓
10 Check sufficient bibs in entry and main lock ✓
11 Open O2 panel valves and function main lock and entry lock bibs ✓
12 Close O2 panel valves and vent down bibs ✓
13 Secure O2 at quad until required for use In use NOT DONE
14 Check main and entry lock door seals are in good condition and lightly greased ✓
15 Check sufficient bedding for 2 divers ✓
16 Check first aid kit is in date for check ✓
17 Check fire extinguisher in main lock is indicating fully charged ✓
18 Check caisson gauge in main and entry locks ✓
19 Function primary communications to main and entry lock ✓
20 Function sound powered phone in main and entry lock ✓
21 Check CO2 scrubber ✓

Comments

None recorded.

Signed

Gerard Brennan

diver · 16/07/2026 11:05

Signed electronically. The handwritten signature is held with this record and appears on the PDF.

OEG-SUB-DIV-CHL-005 v01 — Air Dive DDC
checklist version 1