ML20010H379
| ML20010H379 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/30/1981 |
| From: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 063B, 63B, IEB-81-01, IEB-81-1, NUDOCS 8109240402 | |
| Download: ML20010H379 (5) | |
Text
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U'3riR c p-g VinoixrA ELdCTMIC AND Powna COMPANY, *
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}{ICHMOND, VINGINIA 202 61
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GI JUL 3 A S. 03 July 30, 1981 H.H.LEAMBUNO Vaca Pasasomar Neca. sam oramations Mr. James P. O'Reilly, Director Serial No. 063B Office of Inspection and Enforcement N0/DCW:rh b._
U. S. Nuclear Regulatory Commission Docketgot350-280 Licenib NdIDPR 3h';~
Region II l
//y 101 Marietta Street, Suite 3100 C3 N
'E Atlanta, Georgia 30303
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Dear Mr. O'Rtilly:
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IE BULLETIN NO. 81-01 fg g
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SURVEILLANCE OF MECHANICAL SNUBBERS v.< s.
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As stated in our letters of March 26, 1981 and July 1, 1981 in response to IE Bulletin 81-01 concerning surveillance of mechanical snubbers, we have completed the visual inspection and stroke testing of all Surry, Unit 1,
mechaniccl snubbers in accordance with the requirements of the bulletin.
The visual examination, which was performed with Periodic Testing procedures 1-PT-39A-1 and 1-PT-39A-2, included an inspection of the snubber and snubber mounting to ensure the following conditions were met a.
The snubber was not "hard-up,"
b.
The snubber was not fully extended or fully compressed, c.
The snubber was not in contact with structures or equipment except at connecting points, d.
The clamp bands and struts are in-line with the snubber axis, e.
T1.e pins for each snubber were inserted, f.
The cotters pins and o-rings for each snubber were in place, g.
The welds for the snubber and the mounts were intact, h.
The connecting structure was not bent or cracked and,
- i. The snubber rotated freely around its spherical rod end bearing.
The stroke test, which uas performed with Special Test 127, consisted of a.
Removing the pin from the cylinder end plug spherical bearing, b.
Compressing and extending the telescoping cylinder over the range of stroke by hand, c.
Returning the snubber to its original position and replacing d gg all pins, washers and cotter pins.
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//
8109240402 810730 PDR ADOCK 05000280 Q
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visoix A Es.scTm:C AMD POWEB COMPANY TO Mr. James.
O'Reilly, Director Page 2 Sixty-eight (68) mechanical snubbers, 100% for Unit 1, were examined and tested.
A list of these snubbers is attached for your review.
1 One snubber, Mark nc. 1-SHP-MSS-57 located on 1-MS-102B in Unit 1 Safe-guards Building, could not be stroked as required by the Special Test. This snubber is a new support added during the Steam Generator Replacement outage of Unit 1.
At the time of the inspection, the outage was still in progress, so the snubber had not been in service.
Inspection of the snubber showed that the Unit had been bent during installation, breaking the ball nut away from the telescoping cylinder.
The snubber was replaced with a new, functionally tested, snubber prior to startup of Unit 1.
We consider this to be our final report for IE Bu11 erin 81-01.
If you have any further questions, please contact us.
Very truly yours,
/
/
<s gy R.11. Leasburg Vice President - Nuclear Operations Attachment cc:
Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing Director, Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 L-
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/.ttchm:nt Pags 1 UNIT 1 MECHANICAL SNUBBERS MARK NO.
MANUFACTURER MODEL NO.
LOAD STROKE 1-RC-MSS-115A Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-115B Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-116A Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-116B Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-l'.7A Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-117B Pacific Scientific Company PSA-10 15,000 lbs.
6 in.
1-RC-MSS-218 Pacific Scientific Company PSA-1 1,500 lbs. 4 in.
1-RC-MSS-219 Pacific Scientific Company PSA-650 lbs.
2 in.
1-RC-MSS-220 Pacific Scientific Company PSA-b 650 lbs.
2 in.
1-RC-MSS-221 Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-RC-MSS-222 Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-PS-MSS-1A Pacific Scientific Company PSA-1 1,500 lbs.
4 in.
1-PS-MSS-2A Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-PS-MSS-ils Pacific Scientific Company PSA-1L 1,500 lbs.
8 in.
1-PS-MSS-1B Pacific Scientific Company PSA-1 1,500 lbs.
4 in.
1-PS-MSS-2B Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-PS-MSS-23B Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-PS-MSS-1C Pacific Scientific Company PSA-1 1,500 lbs.
4 in.
1-PS-MSS-2C Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-PS-MSS-10C Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-PS-MSS-12C Pacific Scientific Company PSA-k 350 lbs.
4 in.
1-PS-MSS-14C Pacific Scientific Company PSA-k 350 lbs. 4 in.
1-RH-MSS-120A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-RH-MSS-120B Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
i
e.
Attcchm:nt Pags 2 UNIT I MECLANICAL SNUBBERS 1-WGCB-MSS-11 Pacific Scientific Company PSA-h 650 lbs.
2 in.
1-WGCB-MSS-12 Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-13 Pr fic Scientific Ccupany PSA-650 lbs.
2h ':..
1-WGCB-MSS-14A Pacific Scientific Company PSA-650 lbs.
2
_a.
1-WGCB-MSS-14B Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-15A Pacific Scientific Company PSA-650 lbs.
2 in.
l'WGCB-MJS-ISB Pacific Scientific Company PS/ 5 650 lbs.
2 in.
1-WGCB-MSS-16 Pacific Scientific Company PSA-5 650 lbs.
2h in.
1-WGCB-MSS-17/.
Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-17B Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-18A Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-18B Pacific Scientific Company PSA-650 lbs.
2h in.
1-WGCB-MSS-19 Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-100 Pacific Scientific Company PSA-650 lbs. 2h in.
1-WGCB-MSS-10 Pacific Scientific Company PSA-650 lbs.
2h in.
1-WGCB-MSS-20A Pacific Scientific Company PSA-650 lbs.
2 in.
1-WGCB-MSS-20B Pacific Scientific Company PSA-650 lbs.
24 in.
1-WGCB-MSS-21 Pacific Scientific Company PSA-650 lbs.
2 in.
1-RS-MSS-115A Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-RS-MSS-115B Pacific Scientiffe Company PSA-3 6,000 lbs.
5 in.
1-RS-MSS-116A Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-RS-MSS-116B Paci'ic Scientific Company PSA-3 6,000 lbs, 5 in.
1-SHP-MSS-50 Pacific Seiertlffe Company PSA-1 1,500 lbs.
4 $s 1-SHP-MSS-51A Pacific Scientific Jompany PSA-35 50,000 lbs.
6 in.
u
.A Attachmsnt Page 3 UNIT 1 MECHANICAL SNUBBERS 1-SHP-MSS-51B Pacific Scientific Company PSA-35 50,000 lbs.
6 in, t
1-SHP-MSS-52A Pacific Scientific Company PSA-35 50,000 lbs. 6 in.
1-SHP-MSS-52B Pacific Scientific Company PSA-35 50,000 lbs. 6 in.
1-SHP-MSS-53A Pacific Scientific Company PSA-35 50,000 lbs.
6 in.
1-SHP-MSS-53B Pacific Scientific Company PSA-35 50,000 lbs. 6 in.
1-SHP-MSS-54A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-54B Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-SHP-MSS-55A Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-SHP-MSS-55B Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-SHP-MSS-56A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-56B Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-SHP-MSS-57 Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
i 1-SHP-MSS-58 Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-59A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-59B Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-60A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-60B Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
1-SHP-MSS-61A Pacific Scientific Company PSA-3 6,000 lbs. 5 in.
1-SHP-MSS-61B-Pacific Scientific Company PSA-3 6,000 lbs.
5 in.
l l
1-WGCB-MSS-23 Pacific Scientific Coinpany PSA-3 6,000 lbs. 5 in.
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