%PDF-1.6 % 40 0 obj <> endobj xref 40 13 0000000016 00000 n 0000000777 00000 n 0000000840 00000 n 0000001001 00000 n 0000001113 00000 n 0000001262 00000 n 0000001413 00000 n 0000001615 00000 n 0000002570 00000 n 0000002766 00000 n 0000003680 00000 n 0000009990 00000 n 0000000556 00000 n trailer <<68DE70784D7728409F429E4AEE31EA22>]/Prev 2461874>> startxref 0 %%EOF 52 0 obj <>stream hb```a``f`f`vAb@Y@IO۷Akm7T^YkA{A^߃60؍C\PP d500lati3iY@l [B/ endstream endobj 41 0 obj <> endobj 42 0 obj <> endobj 43 0 obj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/XObject<>>> endobj 44 0 obj <> endobj 45 0 obj <> endobj 46 0 obj <> endobj 47 0 obj [278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 1166 333 556 556 556 556 260 556 333 737 370 556 584 1166 737 333 400 584 1166 1166 333 1166 537 278 333 1166 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 584 611 556 556 556 556 500 556 500] endobj 48 0 obj <> endobj 49 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 738 600 600 600 600 600 600 600 600 600 600 600 600 738 600 600 600 600 738 738 600 738 600 600 600 738 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600] endobj 50 0 obj <>stream BT 0 0 0 rg /F0 6.5 Tf 168.48 828.36 Td (.,) Tj ET BT /F0 2.3 Tf 200.16 831.84 Td (- _ _ _ _ _ _ _ _ _ .) Tj ET BT /F0 4.4 Tf 52.08 814.08 Td (.) Tj ET BT /F0 5.6 Tf 41.52 808.56 Td ('') Tj ET BT /F1 20.4 Tf 0 797.52 Td (fi) Tj ET BT /F1 3.1 Tf 0 794.16 Td (<) Tj ET BT /F1 19.9 Tf 23.52 779.76 Td (M VERMONT YANKEE) Tj ET BT /F1 19.7 Tf 42.24 759.84 Td (NUCLEAR POWER CORPORATION) Tj ET BT /F0 13.7 Tf 491.28 725.76 Td (fY) Tj ET BT /F1 10.1 Tf 490.08 721.2 Td (,e{tv r) Tj ET BT /F1 9.1 Tf 209.28 721.392 Td (RD 5, Box 169, Ferry Road, Brattleboro, VT 05301) Tj ET BT /F0 4.0 Tf 56.4 718.56 Td (.) Tj ET BT /F1 10.3 Tf 449.52 704.88 Td (ENGINEERING OFFICE) Tj ET BT /F0 25.1 Tf 69.6 699.48 Td (y) Tj ET BT /F1 8.0 Tf 457.2 692.16 Td (1671 WORCESTER ROAD) Tj ET BT /F1 6.8 Tf 51.84 690.72 Td (N) Tj ET BT /F1 8.0 Tf 426 683.328 Td (FR TMINGH AM, M ASSACHuSETTS 01701) Tj ET BT /F1 5.5 Tf 64.56 681.84 Td (*) Tj ET BT /F1 6.1 Tf 467.52 672 Td (TELEPHONE 617 472-6100) Tj ET BT /F1 5.6 Tf 96.72 671.52 Td (*) Tj ET BT /F0 9.9 Tf 353.04 653.424 Td (July 11, 1988) Tj ET BT /F1 12.2 Tf 65.04 629.472 Td (U.S. Nuclear Regulatory Commission) Tj ET BT /F1 11.9 Tf 64.56 617.616 Td (Washington, D.C.) Tj ET BT /F1 10.4 Tf 172.8 617.04 Td (20555) Tj ET BT /F0 9.7 Tf 64.8 593.04 Td (Attn) Tj ET BT /F1 11.8 Tf 124.8 592.56 Td (Document Control Desk) Tj ET BT /F1 11.7 Tf 65.04 568.56 Td (References:) Tj ET BT /F1 11.1 Tf 154.56 567.12 Td (a\)) Tj ET BT /F1 12.3 Tf 185.04 566.64 Td (License No. DPR-28 \(Docket No. 50-271\)) Tj ET BT /F1 11.1 Tf 154.56 554.88 Td (b\)) Tj ET BT /F0 10.0 Tf 185.04 556.992 Td (Letter, USNRC to All Licensees for Nuclear Power Plants) Tj ET BT /F0 9.9 Tf 184.56 544.224 Td (Holding an Operating License or a Construction Permit,) Tj ET BT /F0 9.9 Tf 184.56 532.752 Td (NVY 88-075, "NRC Bulletin No. 88-04:) Tj ET BT /F0 9.9 Tf 412.8 531.552 Td (Potential Safety-) Tj ET BT /F1 12.4 Tf 184.56 520.224 Td (Related Pump Loss," dated 5/5/88) Tj ET BT /F1 12.1 Tf 154.32 506.64 Td (c\)) Tj ET BT /F0 10.0 Tf 185.04 508.32 Td (Letter, VYNPC to USNRC, FVY 87-34, "10CFR21 Notification,") Tj ET BT /F1 12.6 Tf 184.56 494.64 Td (dated 3/20/87) Tj ET BT /F1 11.6 Tf 154.08 482.64 Td (d\)) Tj ET BT /F1 12.3 Tf 185.04 483.984 Td (Letter, Bingham to VYNPC, "New Minimum Flow Guidelines,") Tj ET BT /F1 12.5 Tf 184.56 470.4 Td (dated 11/13/86) Tj ET BT /F1 4.3 Tf 577.92 474.24 Td (-) Tj ET BT /F1 11.3 Tf 154.32 458.4 Td (e\)) Tj ET BT /F1 12.0 Tf 184.56 459.312 Td (Report, BNL to USNRC, "Evaluation of a Cracked RHR Pump) Tj ET BT /F0 9.9 Tf 185.76 447.936 Td (Impeller from the Vermont Yankee Power Plant," dated) Tj ET BT /F1 12.1 Tf 184.8 435.456 Td (F >ruary 1988) Tj ET BT /F1 14.8 Tf 155.04 421.92 Td (f\)) Tj ET BT /F0 9.9 Tf 184.56 423.456 Td (Report, General Electric to VYNPC, EAS-04-0187, Revision 1,) Tj ET BT /F1 12.0 Tf 185.04 410.832 Td ("ECCS Minimum Flow Bypass Capacity Evaluation," May 1987) Tj ET BT /F1 12.6 Tf 64.8 387.36 Td (Dear Sir:) Tj ET BT /F1 12.4 Tf 64.56 363.504 Td (Subject:) Tj ET BT /F1 12.2 Tf 153.84 362.832 Td (Vermont Yankee's Response to USNRC Bulletin No. 88-04:) Tj ET BT /F1 12.7 Tf 154.8 350.592 Td ("Potential Safety-Related Pump Loss") Tj ET BT /F1 13.2 Tf 94.32 326.448 Td (By letter dated May 5, 1988 [ Reference b\)], the NRC requested all licensees) Tj ET BT /F1 13.3 Tf 65.52 313.824 Td (to investigate and correct, as applicable, two minimum flow design concerns.) Tj ET BT /F1 13.2 Tf 64.56 301.968 Td (The first concern involves the potential for the dead-heading of one or more) Tj ET BT /F1 13.0 Tf 64.8 290.16 Td (pumps in safety-related systems that have a minimum flow line common to two or) Tj ET BT /F1 13.0 Tf 64.32 277.296 Td (more pumps or other piping configurations that do not preclude pump-to-pump) Tj ET BT /F1 13.0 Tf 65.76 265.92 Td (interaction during minimum flow operation. A second concern is whether or not) Tj ET BT /F1 13.4 Tf 65.04 253.344 Td (the installed minimum flow capacity is adequate for even a single pump in opera-) Tj ET BT /F0 9.0 Tf 65.28 241.92 Td (tion.) Tj ET BT /F0 10.0 Tf 106.8 241.392 Td (The purpose of this letter is to provide, as Enclosure 1, Vermont) Tj ET BT /F1 13.5 Tf 64.08 229.056 Td (Yankee's response to each of the actions requested by the subject bulletin.) Tj ET BT 94.8 204.816 Td (Enclosure 1 provides itemized responses to each of the subject bulletin) Tj ET BT /F1 7.7 Tf 614.4 202.5 Td (j) Tj ET BT /F1 13.8 Tf 64.56 192.624 Td (action items, including Vermont Yankee's prior efforts regarding this subject,) Tj ET BT /F1 13.2 Tf 64.8 180.768 Td (as well as the current status and schedule for long-term resolution actions.) Tj ET BT /F1 12.9 Tf 64.08 168.336 Td (Vermont Yankee's long-term resolution actions include obtaining updated pump) Tj ET BT 64.32 156.336 Td (vendor recommendations, reviewing existing procedures and incorporating) Tj ET BT /F1 12.9 Tf 64.56 144.528 Td (appropriate vendur guidance, and completing a flow calculation for RHR minimum) Tj ET BT /F1 13.2 Tf 65.04 132.528 Td (flow lines to verify that no adverse pump-to-pump interaction occurs. Our) Tj ET BT /F1 13.1 Tf 64.32 120.528 Td (schedule for completing these actions is September 1, 1988.) Tj ET BT /F1 12.6 Tf 431.28 119.52 Td (In accordance with) Tj ET BT /F0 10.0 Tf 64.32 109.296 Td (Action Item 5 of the belletin, the results of these actions will be submitted) Tj ET BT /F1 21.3 Tf 551.76 88.08 Td (/g\(!) Tj ET BT /F0 9.9 Tf 64.08 96.48 Td (within 30 days of their completion.) Tj ET BT /F0 6.0 Tf 553.92 94.56 Td (-) Tj ET BT /F1 7.4 Tf 581.04 81.6 Td (I) Tj ET BT /F1 13.1 Tf 81.84 71.52 Td (8807180180 080711) Tj ET BT /F1 9.7 Tf 81.6 62.16 Td (PDR) Tj ET BT /F1 11.9 Tf 117.84 62.4 Td (ADOCK 05000271) Tj ET BT /F1 9.7 Tf 576.72 65.76 Td (i) Tj ET BT /F1 12.1 Tf 588.24 62.88 Td (\\) Tj ET BT /F1 3.8 Tf 614.4 67.44 Td (|) Tj ET BT /F1 11.2 Tf 81.84 53.04 Td (0) Tj ET BT /F1 10.3 Tf 190.08 54.72 Td (PNV) Tj ET BT /F1 12.7 Tf 584.88 47.52 Td (\() Tj ET BT /F0 4.2 Tf 223.44 53.04 Td (.) 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