The implementation of this standard is necessary both for organizations wishing to be certified for its compliance, and for those planning to become certified under the Monogram program. The Monogram program is in demand, for example, for certifying pipes according to Spec. 5CT, valves, valves according to Spec. 6D, X-mas tree Spec. 6A etc. Product conformity assessment at the American Petroleum Institute requires the manufacturer to implement the requirements for the QMS, which are contained in the API Q1 standard.