ML20246H773
| ML20246H773 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 05/08/1989 |
| From: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8905160196 | |
| Download: ML20246H773 (13) | |
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GAS AND ELECTRIC CHARLES CENTER e P.O. BOX 1475 e BALTIMORE, MARYLAND 21203-1475 R. E. DENTON mat #AGER QUAUTY ASSURANCE a sun somcEs May 8, 1989 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk SUBJ ECT :
Calvert Cliffs Nuclear Power Plant Unit Nos. 1 6 2; Docket Nos. 50-317 6 50-318 Onnite Communication System Centlemen:
This is to advise you of a change to onsite communications at Calvert Cliffs Nuclear Power Plant (CCNPP). This change does not affect communications with any non-Company facility.
As you are aware, our current response to 10 CFR 50, Appendix E, Section IV.E.9 for Company communications consists of an automatic ringdown telephone system between the Control Room, Technical Support Center and its Annex, operations Support Center, the Emergency Operations Facility, and the Media Center.
The system is described in Attachment (5) of Emergency Response Plan Implementation Procedure (ERP1P) 5.1, Communications Equipment.
Enclosure (1)
I to this letter shows the existing system.
In October 1988, a new emergency response telephone system was introduced:
Emergency Response Speed Dial.
Enclosure (2) describes Speed Dial from a user standpoint; Enclosure (3) provides a technical description of the system.
Emergency Response Speed Dial is a feature of the CCNPP dial telephone system.
It fully satisfies 10 CFR 50, Appendix E requirements for an onsite communications system.
Highlights include redundant processing units onsite, backup AC power, backup battery power, increased number of telephone lines and telephones, and automatic call route selection.
Training on Speed Dial was completed on March 2, 1989.
The system has been tested in three drills and was used in the 1988 graded exercise (reference NRC Inspection Report Nos. 50-317/88-30; 50-318/88-30).
It is our intention to revise ERPIP 5.1, Communications Equipment, on June 1, 1989, to reflect Speed Dial.
Effective with this revision, onsite automatic ringdown telephones will be deactivated.
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.U. S. Nuclear Regulatory Commission May 8, 1989 Communications are addressed in the Emergency Response Plan, under Part 5, Facilities and Equipment,Section II.
The Plan does not require a revision subsequent to this change. With the revision to ERPIP 5.1, the plan will continue to meet the standards addressed in 10 CFR 50.54(q) and the requirements of 10 CFR 50, Appendix E, Sections IV.
Please direct any questions on this inatter to:
Mr. Thomas E. Forgette Supervisor-Emergency Planning (301) 260-4996
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Enclosures cc:
D. A. Brune, Esquire J. E. Silberg, Esquire R. A. Capra, NRC S. A. McNeil, NRC W. T. Russell, NRC W. J. Lazarus, NRC H. Eichanholz, NRC T. Magette, DNR L________-___--___-_______--__-_______-_____________________
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Enclosure (2)
October 4, 1988 TO:
Emergency Response Plan Directors, Team Leaders, Key Personnel FROM:
T. E. Forgette
SUBJECT:
Communications This is to announce a new emergency response telephone system:
Emergency Response Speed Dial. The purpose of this system is to allow quick and reliable communications between Directors, Team Leaders, and Key Personnel. This in turn will enhance information flow and problem resolution.
Attachments 1 and 2 show the extent of the system.
Euch telephone is labeled "Emsrgency Response Speed Dial Phone" for easy identification. All phones are assigned a two digit speed dial number.
Complete operating instructions are posted on the phones (see Attachment 3).
The fourth attachment shows expected phone use.
First and foremost, Directors, Team Leaders, and Key people ought to talk directly with other Directors, Team Leaders, and Key people. This is the fastest and most effective communication path.
If a person's phone is busy, or the person doesn't answer, then the call automatically transfers to the Dedicated Communicator in the center. This person will take a message and deliver it.
The Dedicated Communicator may be called directly to tage a written message for anyone in the respective center.
This, however, is a more time consuming approach and should be reserved for low priority information.
11 ease use this system in the October 13 and November 10 drills.
Report any problems or improvement suggestions so action can be taken before the graded exercise on December 6.
I am available at 179-4996.
Mr. Fred Kramme, 179-4489, is also available to assist you in any way possible.
Supervisor-Emergency Planning TEF/sba cc:
P.J. Renehan EPU file 10.5.2 l
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ATTACIDfENT 2 SPEED DIAL DIRECTORY EMERGENCY RESPONSE 00 DEDICMED CCMM SO. DEDICATED CCMM
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- 83. ADMw SUP MGR s3. TRANSPORTATION 16 OPS ANALYST ss. SECURITY DESK
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- 20. DEDICATED CCMM
- 80. VP NED
- 21. OSC DIR M 81. TECH ADVISOR
- 22. ENGNEERNG DIR
- 23. MANTENANCE DiR g 82. PUBLIC INFO SUP MGR
- 83. CCRP SPOKESPERSON 24. RPO
- 25. ONMTL
- 26. EWP COORD Q 27 DOSouETRY TL i
g 28. CHEMISTRY TL C 29 MOCILE CHEM LAB 30 MECH EGR
- 31. ESC EGR 32 MECH MANT TL
- 33. ESC MAINT TL
- 34. HRE PROTl FIRST AfD 35 SECURITY
- 36. SSB CAF ASSEMBLY AREA
- 37. WHSE 3 ASSEMBLY AREA E 40. NEF DIRECTOR E 41. SYSTEMS EGR F d2. DEf/GN EGR SEE ERPIP A.2 FOR COMPLETE TELEPHONE LISTINGS 1
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ATTACDG!NI 3 S-EED DIALINGl
- 1. PRESS " SPEED DIAL" l
- 2. DIAL 2-DIGIT CODE.
BACK-UP METHOD:
- 1. DIAL "# 3".
- 2. DIAL 2-DIGIT EMERGENCY RESPDE CODE.
SPEED DIAL PHONE 3
DO NOT DISCONNECT 3 WAY CONFERENCE TO DD A 3rd PARTY:
- 1. PRESS "CvNF-A".
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Enclosure (3) l EMERCENCY RESPONSE SPEED DIAL: A FUNCTION OF Tile CCNPP DIAL TELEP110NE SYSTEM The dial Telephone System at CCNPP is a Northern Telecom SL-1 XT PBX. The SL-1 XT contains a completely redundant central processing unit. The operation of the PBX switches between the central processing units once a day to ensure that each is operating properly. The Mean Time Between Failure (MTBF) of the the complete Telephone System is 43.4 years.
The average downtime of the Telephone System for maintenance is 0.027 hours3.125e-4 days <br />0.0075 hours <br />4.464286e-5 weeks <br />1.02735e-5 months <br /> each year.
Each telephone has a MTBF of 2 years.
Each telephone can be expected to have a yearly downtime of 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.
Partial failures of the Telephone System that result in a small group of telephones being inoperable may occur for approximately 15 minutes every 2 to 5 years.
Backun Power for the CCNPP Telephone System If a loss of the offsite power to CCNPP occurs, the dial Telephone System automatically draws power from an eight hour battery backup located in the Telephone Room. The Telephone System is also able to draw power from the MCC101AT diesel generator power bus when it becomes active.
There is no loss of Telephone System operation due to a loss of offsite power.
EOF Dial Telephone System The dial Telephone System at the EOF is a Northern Telecom SL-1 ST PBX.
This Telephone System has a single central processing unit.
The MTBF of the complete Telephone System is 2 years. The average downtime of the Telephone System for ruaintenance is 0.51 hours5.902778e-4 days <br />0.0142 hours <br />8.43254e-5 weeks <br />1.94055e-5 months <br /> each year.
Each telephone has a MTBF of 2 years.
Each telephone can be expected to have a yearly downtime of 0.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, i
Partial failures of the Telephone System that result in a small group of telephones being inoperable may occur for approximately 36 mir.utes every 1 to 2 years.
Backun Power for the EOF Telephone System If a loss of the offsite power to the EOF occurs, the dial Telephone System automatically draws power from a two hour battery backup located in the Teleph>ne Room.
The Telephone System is able to draw power from the diesel generator power bus when it becomes active. There is no loss of the Telephone System operation due to a loss of offsite power.
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Enclosure (3)
EMERGENCY RESPONSE CAIL ROUTING Call from an Emergency Response Telephone at CCNPP to an Emergency Response Telephone at the EOF:
The first choice for the call is the eight BG&E microwave tielines and the J
two C&P tielines that link CCNPP with the EOF.
If the 10 tielines to the EOF are busy then the second choice is to send the call over the fifteen tielines to the Fort Smallwood Office Building PBX.
The Fort Smallwood Office Building PBX will then attempt to complete j
the call by sending the call to the EOF by the three BG&E microwave tielines or the two C&P tielines that link the Fort Smallwood Office Building with the EOF.
If the Fort Smallwood to EOF tielines are busy then the call is sent to the Baltimore C&P Central Office and then over the public network to the EOF.
There are thirty-one outgoing lines linking the Fort Smallwood Office Building with the C&P Central Office.
If the fifteen tielines to the Fort Smallwood Office Building are busy, then the call is routed from CCNPP to the Baltimore C&P Central Office via eight outgoing lines. The call is then routed to the EOF via the public network.
If the eight outgoing lines from CCNPP to the Baltimore C&P Central Office are busy, then the last choice available is to route the call to the Prince Frederick C&P Central Office via twenty-three outgoing C&P lines.
The call is then routed to the EOF via the public network.
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FRERGENCY RESPONSE CAIL ROUTING l
Call from an Emergency Response Telephone at the EOF to an Emergency Response Telephone at CCNPP:
The first choice for the call is the eight BC&E microwave tieilnes and the two C&P tielines that link CCNPP with the EOF.
l If the ten tielines to CCNPP are busy, then the second choice is to send
'1 the call over the three BG&E microwave and two C&P tielines to the G&E building.
The G&E Building PBX will then attempt to complete the call by sending the call to CCNPP via the C&P Tl facility.
This facility is the equivalent of twenty-four tielines.
If the T1 link between the C&E Building and CCNPP is completely busy, then the call will be routed to the Fort Smallwood PBX via another C&P Tl facility and then to CCNPP via l
the fifteen BG&E microwave tf911nes that link the Fort Smallwood Office Building with CCNPP.
If all
-f these tielines are busy, then the call is routed from the C&E Building to the Balcimore C&P Central Office via 94 outgoing lines.
The call is then completed via the public network.
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