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Applicable to all Oil & Gas Operators and Service Providers GUIDELINES AND REQUIREMENTS FOR WORK AT HEIGHT AND IN CONFINED SPACES IN THE NIGERIAN OIL AND GAS INDUSTRY

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Applicable to all Operators and service 
companies 
GUIDELINES AND REQUIREMENTS FOR WORK AT HEIGHT AND IN 
CONFINED SPACES IN THE NIGERIAN OIL AND GAS INDUSTRY 
Code:  DPR Guide 0037 – 2020  
 
Revision Date: 2nd October 2020 
 
 
 
This is a property of the Department of Petroleum Resources. All rights reserved. 
 
19 
6 WORKING IN CONFINED SPACES 
6.1 General Requirements and Risk Assessment    
All confined space activity shall be carried out under a permit-to-work system. The 
identification of hazards, assessment of risks, and emplacement of control 
measures to prevent/mitigate identified risks must be carried out prior to working 
in confined spaces. Additionally, the following shall apply: 
i. 
All energy sources connected to the confined space are properly identified 
and isolated. 
ii. 
The confined spaces that contain or have the potential to contain serious 
atmospheric hazards shall be tested prior to entry and continuously 
monitored by a competent person. 
iii. 
An attendant must be stationed outside a confined space. At a minimum, the 
attendant is required to monitor the entrants to the confined space, test the 
air quality and alert the rescue team during an emergency. Furthermore, the 
attendant shall remain outside the permit space during entry and rescue 
operations until relieved by another attendant. 
iv. 
 Adequate supervision shall be carried out at the confined space to ensure 
that: 
a. The confined space meets acceptable entry conditions  
b. Only authorized personnel enter a confined space 
c. Entry into a confined space is monitored and tracked and  
d. Work is terminated immediately in the event of adverse changes to 
the confined space atmosphere.  
v. 
Any person entering a confined space must be physically and mentally fit to 
cope with physical and psychological stresses associated with working in the 
confined space.