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Audit of the H7 and B11 compressor facilities

The Petroleum Safety Authority Norway (PSA) audited GNSC H7 (German North Sea Compressor Platform) and B11 on 27-28 September 2006. The facilities are located on the German Shelf in the North Sea. Gassco AS is the operator, while ConocoPhillips handles day-to-day operations. Our general impression following the audit is that H7 and B11 are operated according to prevailing regulations.

H7 og B11

H7 (left) and B11 (source: Gassco)

The audit was carried out together with representatives of German authorities. The audit activities were directed at technical safety and mechanical systems, among other things. In addition, a Telenor representative inspected the communication equipment on the facilities.

Background for the audit

An agreement (Memorandum of Understanding) between Norwegian and German authorities regulates the two countries' supervision of how the facilities are operated. Both countries' authorities agree on joint audit activities which are carried out at regular intervals.

Purpose of the audit

The purpose of the audit was to verify that the facilities are operated according to prevailing regulations relating to the areas mentioned above.

Result of the audit

The general impression from the audit is that H7 and B11 are operated according to prevailing regulations. We noted good order on the facilities.

Several upgrades have recently been carried out on B11, e.g. the installation of a new crane, modification of the Seatrax Monark crane, upgrade of the emergency shutdown valves (ESD valves) and the installation of a new HVAC system.

From 2007, the gas will bypass H7 and the facility will be unmanned and subsequently removed. In spite of this, H7 was well maintained.

Contact person i the Petroleum Safety Authority
Mike Theiss