Singapore legislation
Regulation 103
of Workplace Safety and Health (Construction) Regulations 2007
Regulation 103
Condition for multiple entries in compressed air environment
Subregulation 1
No person who has undergone 3 decompressions from a pressure exceeding one bar in any 24-hour period preceding the time he is to enter a compressed air environment shall carry out any work in compressed air in the worksite except for the purpose of carrying out rescue work.
Subregulation 2
This regulation shall not apply to any person who is a supervisor of works being carried out in a compressed air environment or who is engaged in maintenance work in a compressed air environment provided that —
the person shall not be so employed on more than 5 occasions in any 24-hour period;
the employment is not for more than half an hour on any one occasion;
there is an interval of not less than 1½ hours between each such employment; and (d)the maximum pressure at which that person is so employed does not exceed 2 bars.