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NRIC IVNetwork Reliability and Interoperability Council
Washington, DC
October 14, 1999
Rick Harrison
Telcordia Technologies
732-699-6720
rick6@telcordia.com
NRIC IVFocus Group 3
Subcommittee 1 : Observations/FindingsPower Continued: Focus on Year 6 7/1/98 - 6/30/99 Outages 22 Outages
12 - Root Cause Commercial/Backup Power Failure 10 Root Cause Procedural
8 Sub Cause Standby Generator BPT Findings
15 Outages with Best Practice implications
PW BPs applicableto outages
Number of outages
PW45 3 OutagesPW69-71 7 OutagesPR03 7 OutagesPW57, 58 2 OutagesPW51, 52, 56 2 Outages
NRIC IVFocus Group 3
Subcommittee 1 : Observations/FindingsPower Continued: Focus on Year 6 7/1/98 - 6/30/99 Outages
BPT Findings Continued PW69-71 & PR03 All relate to MOPs and Installation
Guidelines PW69 - Telcos should have documented installation
guidelines PW70 - Telcos should clearly communicate their installation
guidelines to all involved parties PW71 - On-site installation acceptance should include a
quality review of conformance to the company's and vendor’s guidelines
PR03 - MOPs and Acceptance/Verification Check-off Sheets for Hardware and Software Growth/Change Activities …
All of the above were rated highly effective, implemented and low cost to implement
NRIC IVFocus Group 3
Subcommittee 1 : Observations/FindingsPower Continued: Focus on Year 6 7/1/98 - 6/30/99 Outages
BPT Findings Continued Six remaining Outages
1- Under-engineered for load 1- Lightning 4- Engine/hardware failure
• 3- multiple failures• 1 - Remote location in the mountains, bad
weather forced back helicopter and SnowCat trip was over 4 hours.
Two new Best Practices identified related to Low Voltage Disconnect and Alarm
NRIC IVFocus Group 3
Subcommittee 1 : Observations/Findings Continued
Essential Services ECOMM of NRCII had 33 recommendations which
posed many options and alternatives to improve reliability
Many of the above recommendations were complementary and Supplementary
Survey Data indicated confusion regarding implementation responses
NRIC IVFocus Group 3
Subcommittee 1 : Observations/Findings Continued
Essential Services SC1 analysis resulted in a complete revamping of the
Essential Services Best Practices Deleted redundant BPs Deleted “Not Best” Combined related options and alternatives that
supported the same goals and objectives ES01 + ES02/ES01 + ES03 = ES04
NRIC IVFocus Group 3
ES01 + ES02/ES01 + ES03 = ES04
ES01- Diverse Interoffice Transport Facilities ES02 - Diverse Interoffice Transport Facilities with
Standby Protection (Option of ES01) ES03 - Diverse Interoffice Transport Facilities Using DCS
(Option of ES01) ES04 - Fiber Ring Topologies for 911 Circuits
(Accomplishes the goals of ES01,02&03)
NRIC IVFocus Group 3
Subcommittee 1 : Observations/Findings Continued Essential Services
33 Best Practices Evaluated 8 Deleted 7 combined with others 18 Best Practices
NRIC IVFocus Group 3
Subcommittee 1 : Observations/Findings Continued Supplier Best Practices
SP05 Human factors represents a new paradigm for vendors. There will be increased “emphasis” due to the Procedural. Errors Team Report.
SP12 Establish Core Team to plan, test and evaluate change - Service Provider initiated BP that suppliers should participate in. Not a Supplier BP Delete (See PR14)
Add PR04 Information Sharing Guidelines - as SP12 Survey reflects continued high implementation Confirmed broad industry applicability beyond
traditional Telcom suppliers Combined categories of DCS, Switch and Signaling
into 1 Network element category
NRIC IVFocus Group 3
Next Steps
July -A Best Practice by Best Practice review and analysis of the survey responses COMPLETE
-Review NRSC Facilities Solution Team Report for Best Practice implications ONGOING
August -Complete survey analysis and gain consensus
around final recommendations COMPLETE
November -Draft 1 of final report ( deferred due to renewed focus on Power)
December -Complete final report
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