B12639, Proposed Tech Specs Change Request Re Control Rod Drive Mechanism Removal
| ML20237K113 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 08/11/1987 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20237K107 | List: |
| References | |
| B12639, NUDOCS 8708190093 | |
| Download: ML20237K113 (2) | |
Text
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Docket No. 50-245 B12639 I
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Millstone Unit No.1 Proposed Technical Specification Change Request i
Control Rod Drive Mechanism Removal j
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August,1987 8708190093 B70811ADOCK 05000245 PDR PDR p
LIMITING CONDITION FOR OPERATION 35 CORE AND CONTAINMENT COOLING SYSTEMS 1
3.5.F.7.
When irradiated fuel is in the reactor vessel and the reactor is in the REFUEL CONDITION, a single control rod may be withdrawn and the drive mechanism replaced or fuel removal and replacement may be conducted provided that the following conditions are satisfied.
(a) The reactor vessel head is removed.
(b) The cavity is flooded.
(c) The spent fuel pool gates are removed.
(d) Water level is maintained within the limits of.
Specification 3.10.C.
(e) Either (1) both core spray systems, (ii) both low pressure coolant injection systems or (iii) one core spray system and one low pressure coolant injection system, each combination being supplied by independent electrical j
power, shall be operable or available for operation with the respective 4160 volt supply breaker (s) racked out.
I (f) With the torus drained, (i) the ECCS configuration required
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in 3.5.F.7(e) shall be aligned with the condensate storage tank and the condensate storage tank suction valve V7-58 locked open, (ii) the condensate storage tank shall contain at least 414,000 gallons of usable water.
I (g) The minimum electrical power source requirements shall be the same as specified in paragraph 3.7.B.4.
(h)
No work will be performed in the reactor vessel other than fuel sipping while a control rod drive housing is open.
(i) Fuel removal and replacement will not be done without a full complement of control rods.
(j) During fuel movement, no work being done which has the potential for draining the vessel.
(k) For purposes of control rod drive mechanism removal and/or l
replacement, specifications 3.5.F.7(a), (b) and (c) do not I
apply provided ECCS systems identified in 3.5.F.7(e) are 1
operable (4,160 volt supply breaker (s) racked in).
Millstone Unit 1 3/4 5-9 I
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