How many audits are needed in order to satisfy the full requirements of the oil and gas industry?
One audit can cover both ISO/TS 29001 and ISO 9001, because ISO/TS 29001:2003 includes ISO 9001:2000 unaltered and in its entirety. Note: if the meaning is “ISO/TS 29001 plus API Monogram” then it is possible to achieve both via a single audit only if the audit is performed by API, remembering that only API can provide the audit for the API Monogram license. See also C.2 and C.3 above.