ML20206N060
| ML20206N060 | |
| Person / Time | |
|---|---|
| Issue date: | 04/10/1987 |
| From: | Merschoff E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | Hodges M Office of Nuclear Reactor Regulation |
| References | |
| REF-QA-99900403 NUDOCS 8704200372 | |
| Download: ML20206N060 (3) | |
Text
O April 10,1987 Docket No. 99900403/86-03 MEMORANDUM FOR:
Marvin W. Hodges, Chief Reactor Systems Branch Division of BWR Licensing Office of Nuclear Reactor Regulation FROM:
Ellis W. Merschoff, Acting Chief Vendor Program Branch Division of Quality Assurance, Vendor and Technical Training Center Programs Office of Inspection and Enforcement i
SUBJECT:
SLOW CONTROL R0D MOTION INITIATION EXPERIENCED AT THE VERMONT YANKEE NUCLEAR POWER STATION DUE TO FAILURE OF SCRAM SOLEN 0ID PILOT VALVES
REFERENCE:
Memo from R. F. Heishman to M. V. Hodges, dated December 3, 1986 Memo from M. V. Hodges to R. F. Heishman dated December 16, 1986 On April 2,1987, we held a meeting with Mr. G. Stramback, GE, San Jose, to discuss GE's statement that "a 12-16 second slow scram in 119 of 121 control rods in a BWR could not result in a substantial safety hazard."
GE furnished copies of proprietary documents titled 1) No. 86-09 Control Rod Drive Scram Anaroly and 2) RRC No. 84-62 for review. We are enclosing one copy of each of these documents.
Please review these documents and inform us of the acceptability of the GE statement that a 12-16 second slow scram in 119 of 121 control rod drives in a BWR could not result in a substantial safety hazard.
BdginalSigned by
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Ellis W. Merschoff, Acting Chief Vendor Program Branch Division of Quality Assurance, Vendor l
and Technical Training Center Programs Office of Inspection and Enforcement
Enclosure:
1.
2 GE Proprietary Documents DISTRIBUTION: _w/o enclosure RID 5< Code-IE:09 VPB Reading F
oo EMerschoff A
EBaker KNaidu
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k April 10, 1987 I Docket No. 99900403/86-03 MEMORANDUM FOR:
Marvin W. Hodges, Chief Reactor Systems Branch Division of BWR Licensing Office of Nuclear Reactor Regulation FROM:
Ellis W. Merschoff, Acting Chief Vendor Program Branch Division of Quality Assurance, vendor and Technical Training Center Programs Office of Inspection and Enforcement
SUBJECT:
SLOW CONTROL R0D MOTION INITIATION EXPERIENCED AT THE VERMONT YANKEE NUCLEAR POWER STATION DUE TO FAILURE OF SCRAM S0LEN0ID PILOT VALVES
~
Memo from R. F. Heishman to M. V. Hodges, dated December 3,
REFERENCE:
1986 Memo from M. V. Hodges to R. F. Heishman dated December 16, 1986 On April 2,1987, we held a meeting with Mr. G. Stramback, GE, San Jose, to discuss GE's statement that "a 12-16 second slow scram in 119 of 121 control rods in a BWR could not result in a substantial safety hazard."
GE furnished copies of proprietary documents titled 1) No. 86-09 Control Rod Drive Scram Anamely and 2) RRC No. 84-62 for review. We are enclosing one copy of each of these documents.
Please review these documents and inform us of the acceptability of the GE statement that a 12-16 second slow scram in 119 of 121 control rod drives in a BWR could not result in a substantial safety hazard.
DrigiffalSigned by EliLW. Mersche'.r Ellis W. Merschoff, Acting Chief Vendor Program Branch Division of Quality Assurance, Vendor and Technical Training Center Programs Office of Inspection and Enforcement
Enclosure:
1.
2 GE Proprietary Documents DISTRIBUTION: w/o enclosure RIDS Code IE:09 VPB Reading 00AVT Reading JTaylor BGrimes EMerschoff EBaker KNaidu 12 PB:DQAVT % hSC/VPB:D0AVT
/VPBiDOAVT aidu:tt L/ EBaker schoff
\\\\/87 f/j@/87
/It/87
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6 UNITED STATES i
NUCLEAR REGULATORY COMMISSION
} {y WASHINGTON, D. C. 20665
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April 10,1987 Docket No. 99900403/86-03 MEMORANDUM FOR:
Marvin W. Hodges, Chief Reactor Systems Branch Division of BWR Licensing Office of Nuclear Reactor Regulation FROM:
Ellis W. Merschoff, Acting Chief Vendor Program Branch Division of Quality Assurance, Vendor and Technical Training Center Programs Office of Inspection and Enforcement
SUBJECT:
SLOW CONTROL R0D MOTION INITIATION EXPERIENCED AT THE VERMONT YANKEE NUCLEAR POWER STATION DUE TO FAILURE 0F SCRAM S0LEN0ID PILOT VALVES
REFERENCE:
Memo from R. F. Heishman to M. V. Hodges, dated December 3, 1986 Pemo from M. V. Hodges to R. F. Heishman dated December 16, 1986 On April 2,1987, we held a meeting with Mr. G. Stramback, GE, San Jose, to discuss GE's statement that."a 12-16 second slow scram in 119 of 121 control rods in a BWR could not result in a substantial safety hazard."
GE furnished copies of proprietary documents titled 1) No. 86-09 Control Rod Drive Scram Anamoly and 2) RRC No. 84-62 for review. We are enclosing one copy of each of these documents.
Please review these documents and inform us of the acceptability of the GE statement that a 12-16 second slow scram in 119 of 121 control rod drives in a BWR could not result in a substantial safety hazar i
/.
Ellis W. Merschof Acting Chief Vendor Program B nch Division of Quality Assurance, Vendor and Technical Training Center Programs Office of Inspection and Enforcement
Enclosure:
1.
2 GE Proprietary Documents