Rec. No. 72
IACS Rec. 2000/Rev.2 2007
No. 72
(2000)
Rev.1
(October 2003)
Rev.2
(April 2007)
IACS
CONFINED SPACE SAFE
PRACTICE
Rec. No. 72
IACS Rec. 2000/Rev.2 2007
Contents
1. Definitions
1.1 Confined Space
1.2 Competent person
1.3 Responsible person
1.4 Marine Chemist
2. General Hazards
3. Confined space – Safe entry policy
3.1 General
3.2 Entering confined spaces adjacent to loaded tanks
3.3 Entering confined spaces adjacent to inerted tanks
4. Confined space - Safe entry procedure
4.1 General
4.2 Entering confined spaces adjacent to loaded tanks on double hull tankers – additional
requirements
5. Permit-to-work and permit-to-enter
6. Testing of the atmosphere
6.1 General
6.2 Testing for oxygen
6.3 Testing for flammable atmosphere
6.4 Testing for toxic atmospheres
6.5 Testing instruments
7. Preparation for Entering Confined Spaces
7.1 Ventilation
7.2 Isolation of Space
7.3 Standby / rescue
8. Personal Protection Equipment (PPE)
ANNEX
Guidelines for safe entry of Confined Spaces
Rec. No. 72
3 of 24 IACS Rec. 2000/Rev.2 2007
Confined Spaces Safe Practice
1 Definitions
1.1 Confined Space
Confined space means a space that has any of the following characteristics:
— limited openings for entry and exit;
— unfavourable natural ventilation;
— not designed for continuous worker occupancy.
It includes, but is not limited to, boilers, pressure vessels, cargo holds, cargo tanks, ballast tanks, double bottoms, double hull
spaces, fuel oil, lube oil, sewage-tanks, pump-rooms, compressor rooms, cofferdams, void spaces, duct keels, inter-barrier
spaces and engine crankcases.
1.2 Competent person
Competent person means a person with sufficient theoretical knowledge and practical experience to make an informal
assessment of the likelihood of a dangerous atmosphere being present or subsequently arising in the space.
1.3 Responsible person
Responsible person means a person authorised to permit entry to a confine