Implications in Station Data Availability (DA) and Performance Over Time (POT)

IS42-Graciosa 2011-2015 O&M and interaction with the PTS: Nicolau Wallenstein 1 & Flávio Soares 1,2 1 Centro de Vulcanologia e Avaliação de Riscos Geológicos, Universidade dos Açores (nicolau.mb.wallenstein@azores.gov.pt) 2 Fundação Gaspar Frutuoso (flavio.s.soares@azores.gov.pt)

Wallenstein, N. & Soares, F. - IS42-Graciosa 2011-2015 O&M and interaction with the PTS: IMS Network http://www.ctbto.org/map/

The Azores islands 9 Volcanic islands ~2,300 km 2 of land ~1,400 km to Lisbon ~243,000 inhabitants ~618 km PDL-TER ~30-40 min. TER-GRA ~15 m Transit: 40 min. to 6 h TER-GRA 1 flight/day 2 (2x/week)

~61 km 2 4,393 inhabitants (2011) Winter - 13 C Summer 24 C Mild, Wet weather Occasional hurricanes

Contracts Contract NO. 2007-1270 Liaison, Support Services and Initial Testing for IS42, Graciosa, Azores, Portugal 28 November of 2007 Jan 2008 - Bidders conference Need to redesign the energy and intrasite communications infrastructures project

IS42 (I42PT) location

IS42 (I42PT) Geometry

I42H1 to I42H8 Layouts 28 30 12 14 26 10 9 11 13 27 29 15 16 32 25 39 5 8 4 1 3 2 6 7 31 33 40 24 23 21 37 35 19 17 18 34 22 20 38 36

Energy 7x independent Grid energy points 25-KVA power transformer 25-KVA CRF Generator

IS42 (I42PT) intrasite Optical fibre trace

Optical Fiber intrasite communications Communications Cable trace: 76 Poles 26 visit boxes

CRF (August 2010)

Array Elements (August 2010)

Official inauguration by the Regional Government of the Azores (June 2011)

Official visit of the President of Portugal (September 2011)

Contracts Amendment of Liaison Contract NO 2007-1270 for IS42 to Cover Additional Costs 17 December of 2010 Amendment NO. 2 to Contract NO. 2007-1207 7 December of 2011 Provisional Post-Certification Activities, already with a O&M plan on the 2011 PTS template Contract NO. 2012-1694 Post-Certification Activities 03 December of 2012 Amendment NO. 1 to Contract NO. 2012-1694 May 2015 Budget revision (lowering costs) with a One-Time Costs annexe.

CRF ( Sep 2015)

Array Elements (2015)

September 2010 November 2010 January 2011 March 2011 May 2011 July 2011 September 2011 November 2011 January 2012 March 2012 May 2012 July 2012 September 2012 November 2012 January 2013 March 2013 May 2013 July 2013 September 2013 November 2013 January 2014 March 2014 May 2014 July 2014 September 2014 November 2014 January 2015 March 2015 May 2015 July 2015 September 2015 PRs/Month Interaction with PTS 79 PR (12 open) 55 MR 32 OR 1 CCR 27 CCN 8 825 e-mail messages (support tickets included) Undetermined number of phone calls Several meetings at the IDC 7 6 5 4 3 2 PRs Open PRs 1 0 Month Year

Interaction with PTS Communication with PTS is being very frequent, using IRS reporting, Support tickets, e-mails and phone calls; PTS officers have been always very supportive and the personal contact (mainly during the station installation and the training in Vienna), allowed us to establish very cordial relations that facilitate to overcome many difficulties felt by the SO in dealing with processual issues; PTS responsiveness has been variable along the time but, according with our own experience, it looked that the communication levels decreased during the last year; The processes associated with equipment replacement and USM, both by direct PTS supply or by P.O., tend to be slower than the desirable to keep always a good DA and to not extend non-mission capability situations.

Operation: Remote access to the station to daily O&M Dec. 2010 - Initially we performed SoH with Waveform, NaqsView & ConfigUi Very slow connection with a PC using a token; No access to IDC data

Operation: Remote access to the station to daily O&M Nov 2012 - Use of Web SoH A great improvement for online monitoring of the station SoH; No access to IDC data

Remote access to the station to daily O&M Feb 2012 - Installation of a workstation for remote operation VPN access only operational in Nov 2013 and started receiving IDC data in Jan. 2014. Data not received between: - Sep and Oct 2014 and not backfilled - April 2015 to present

Remote access to the station to daily O&M Actually we are using basically waveform, Web SoH Data integrity and data coherency is being surveyed with Geotools Deeper analysis is being tentatively performed with WinPMCC.

Jan/11 Mar/11 May/11 Jul/11 Sep/11 Nov/11 Jan/12 Mar/12 May/12 Jul/12 Sep/12 Nov/12 Jan/13 Mar/13 May/13 Jul/13 Sep/13 Nov/13 Jan/14 Mar/14 May/14 Jul/14 Sep/14 Nov/14 Jan/15 Mar/15 May/15 Jul/15 Main events that affected DA and POT of the station 100% IS42 D.A. (%) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% DA Month/Year Mission Capability

Main events that affected DA and POT of the station Feb 2012 - Installation of SSI on the same Workstations that were running Naqserver H8 & H2 elements with very frequent data cuts and backfill data, lowering significantly the POT Solved in Sep 2014 with the replacement of the new workstations.

Jan/11 Mar/11 May/11 Jul/11 Sep/11 Nov/11 Jan/12 Mar/12 May/12 Jul/12 Sep/12 Nov/12 Jan/13 Mar/13 May/13 Jul/13 Sep/13 Nov/13 Jan/14 Mar/14 May/14 Jul/14 Sep/14 Nov/14 Jan/15 Mar/15 May/15 Jul/15 Main events that affected DA and POT of the station 100% IS42 D.A. (%) 90% 80% 70% 60% 50% Aug 2012 - Error in the SSI configuration filling up the harddisk. 40% 30% 20% 10% 0% DA Month/Year Mission Capability

Jan/11 Mar/11 May/11 Jul/11 Sep/11 Nov/11 Jan/12 Mar/12 May/12 Jul/12 Sep/12 Nov/12 Jan/13 Mar/13 May/13 Jul/13 Sep/13 Nov/13 Jan/14 Mar/14 May/14 Jul/14 Sep/14 Nov/14 Jan/15 Mar/15 May/15 Jul/15 Main events that affected DA and POT of the station 100% IS42 D.A. (%) 90% 80% 70% 60% 50% Aug 2013 - Error in the SSI configuration 40% 30% 20% Aug 2013 - Problems with the OF converters power supply 10% 0% DA Month/Year Mission Capability

Main events that affected DA and POT of the station February 2012 to July 2013- recurrent problems with the H6 digitizer not sending data Digitizer had to be reset in 7 occasions, being more recurrent after May 2013.

Main events that affected DA and POT of the station March 2014 to present H1 and H6 Serious SNR problems

Main events that affected DA and POT of the station November 2014- H5 not sending data Faulty Grid energy box. Repaired in July 2015

Jan/11 Mar/11 May/11 Jul/11 Sep/11 Nov/11 Jan/12 Mar/12 May/12 Jul/12 Sep/12 Nov/12 Jan/13 Mar/13 May/13 Jul/13 Sep/13 Nov/13 Jan/14 Mar/14 May/14 Jul/14 Sep/14 Nov/14 Jan/15 Mar/15 May/15 Jul/15 DA: always meaningful measurement o POT? 100% IS42 D.A. (%) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% DA Month/Year Mission Capability

Jan/11 Mar/11 May/11 Jul/11 Sep/11 Nov/11 Jan/12 Mar/12 May/12 Jul/12 Sep/12 Nov/12 Jan/13 Mar/13 May/13 Jul/13 Sep/13 Nov/13 Jan/14 Mar/14 May/14 Jul/14 Sep/14 Nov/14 Jan/15 Mar/15 May/15 Jul/15 DA: always meaningful measurement of POT? 100% IS42 D.A. (%) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% DA Month/Year Mission Capability

Conclusions With the support of the Azores Regional Government, the Graciosa Municipality and the CVARG, the PTS designed, built and installed the station IS42 with robust durable CRF, accesses, energy and intrasite communications infrastructures; IS42 started to operate on August 2010, being certified on December of the same year; Not free from occasional problems, the station operation presented an average of almost 100% of DA in the aprox. first 2.5 years of operation since certification; Migration to SSI in obsolete workstations and later problems in other equipment (power supply units, digitizers and MBs) decrease the DA and POT significantly in the last two years, with some periods of non mission capability status; Improvement in the interaction with the PTS, leading to quicker processes of troubleshooting, equipment replacement and USM are desirable to avoid long non mission capability periods; We look forward to have access to SSI and data analysis training.

Thank you for your attention