ML20210S865
| ML20210S865 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 07/18/1975 |
| From: | Rosa F Office of Nuclear Reactor Regulation |
| To: | Deyoung R Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-1692 NUDOCS 8605290465 | |
| Download: ML20210S865 (2) | |
Text
6 JUL I 8 7375 R. C. DeYoung Assistant Director for LWRs, Group 1, RL THRU: Thomas A. Ippolito. Chief. Electrical, Instrumentation & Control Systems Branch TR WASHINGTON PUBLIC POWER SUPPLY SYSTEM WPPSS NUCLEAR PROJECTS NO. 3 and NO. 5, REQUEST FOR ADDITI0l&L INFORMATION Plant Name: WPPSS Nuclear Projects Nos. 3 and 5 Docket Number: 50-500/509 Licensing Stage: Construction Pemit Milestone Hunter: Request for Additional Infomation Responsible Branca and Project Leader: LWR l-3, P. O'Reilly Tech 46 cal Review Branch Involved: El&CS Branch Description of Review: Supplemental Question Requested Completion Date: NA Review Status: Awaiting Information The enclosed request for additional infomatio.1 was prepared by TR:RS, Electrical, Instrumentation and Control Systent Branch. This rdquest for additional infomation is doened necessary f n order to complete our review of this application.
Orig!nal Signed By V. Reen Faust Rosa, Section Leader Electrical Instrunentation and Control Systems Branch Olvision of Technical Review Office of Nuclear Reactor Regulation
Enclosure:
As stated above cc:
S. Hanauer
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-l ENCLOSURE I
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222.48 Provide your design criteria and procedures for fire stops and
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(8.0) seals. Your response should address but not be limited to the following:
a) Cable and cable tray penetrations through walls and floors, and all other types of cable ways or conduits, b) Design criteria for each type of fire stop and seal installation.
c) Interval (physical distance) at which the fire stops are installed in vertical cable trays, and in horizontal cable trays (if any).
d) List of materials used and their characteristics with regard to flammability and fire retardancy and their fire underwriters rating.
e) The QA and test procedures used to verify that penetration fire stops and seals have been properly installed, f) The riualification testing of the fire stops and seals to demonstrate adequacy over the life of the plant, g) The administrative procedures and controls that will be followed when it becomes necessary to breach a completed fire stop or seal to add or remove cables.
h) The periodic inspections Wrformed to identify open or deteriorated fire stops and seals:
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In addition evaluate the adequacy of your design with regard to fire hazards in areas of concentration of electrical cables.
Identify the areas involved and describe the fire detection and protection system and equipment provided to control and extinguish cable fires and to assure that fire in one system will not propagate to another redundant system.
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