AGA - Z380.1 ADD 4
Addendum 4 Guide for Gas Transmission and Distribution Piping Systems
|Publication Date:||1 May 2016|
Damage to existing underground facilities can result from directional drilling or the use of other trenchless technologies. These general guidelines apply to directional drilling and trenchless technologies performed by the operator or a third party in proximity to gas facilities. In part, they provide the following.
(a) Criteria for planning and precautions.
(b) Recommended procedures.