ML17216A552
| ML17216A552 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 05/13/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17216A551 | List: |
| References | |
| NUDOCS 8605200216 | |
| Download: ML17216A552 (5) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON,D. C. 20555 SAFETY EVALUATIOt) BY THE OFFICE OF NUCLEAR REACTOR REGULATIOH R LATIttG R L I
R U
I'I N I NXI H
ASII C
D 0
'EKE S
LUCIE UNI I 0 INTRODUCTIOr<
The staff reviewed the St. Lucie Unit 2 inservice testing {IST) program for ASIDE Code Class I~ 2. and 3 pumps and valves submitted by the 1icensee, FPQ.. in a letter dated October 6. l983 A Safety Evaluation addressing the IST program and the licensee's request for re)ief f'rom impractical
~
ASIDE Code requirements was sent to the licensee by a letter dated January 33 1986Property "Letter" (as page type) with input value "05000250/LER-1978-017, Forwards LER 78-017/03L-0"January 33, 1986" contains a sequence that could not be interpreted against an available match matrix for date components." contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process..
The Safety Evaluation contained a condition that flow measurement instrvmentation be installed on certain pumps important to
. safety before the end of the next refueling outage In a letter dated tfarch Il. 2986, the licensee requested interim relief
'from this requirement because Sf. -Lucke Unft.2-was scheduled.to-.begin a refueling outage on April l. 2986 The licensee provided additional information in a letter dated April l4. l986 that describes the specific hardships involved with these modifications during. the current refuelin9 outage
. 'This safety evaluation is related only to the schedular deferra1 of the installation of pump flow measurement instrvmentation 2 0 EVALUATION 2.2 Descri tion of Co onents
~he pumps addressed by this review are the following:
~
~
Boric Acid Makeup Pump No. 2A Boric Acid Pei(:eup Pvmp No. 28 mK g9PJ A, GAOL IIlO OO
~IIl KIO rial I'AID
,OQ lOC OlIll
,OK
'NCl mo.L, Containment Spray Pump No 2A Containment Spray Pump No 26 Auxiliary Fecduater Pump No 2A Auxiliary Feeduater Pump No 28 Auxiliary Feeduater 0'vrIp No.
2C loi~ Prcssure Safety Injection I'vmp No. 2A Los.. Prcssvre Safety Injection Pump No 28 High Pressure Safety Injection Pvmp No 2A HigtI Pressure Safety Injection Pump No..2B Diesel Dil Transfer Pump No. 2" Diesel 051 Transfer. Pump No 2e
>J l
l yl'r Vlf lg I' ly l
'.,lV,
2-2.2 ASNE Code Re uirement The St. l.ucie Unit 2 IST program is based on ASNE Section XI~ 1980 Edition including Addenda through Minter 1980 {the applicab1e Code).
Subarticle IMP-3100 requires measurement of the differentia) pressure
=and flow rate.
For background information, it should be noted that CNE Section XI,
.1974 edition, required the measurement of differential pressure or flow rate, not'both, in a fixed resistance system.
Jn a variable resistance system, both parameters shall be measured.
2.3 Licensee's R
uest The licensee requested Coamission approval to defer the requirement to install flow measurement devices until the end of the next refueling outage which is scheduled for late 1987 or early 1988.
2 4 Dcensee's Basis For Relief 3.0 Imposing the acquirement would result. in a significant delay from start-up after the 1986 refueling outage.
In the April 14, 1986 1etter, the licensee states that lead time for 'the procurement and delivery of instrumentation is approximately. 24-26 weeks.
In addition, 13 to 51 man-
. days should be*required for installation and testing of the components, depending on the system.
The licensee determined that the measurement of differential pressure of the pumps is sufficient to verify operational readiness during the interim period.
STAFF EVALUATIONAND CONCLUSION The staff has completed the review of the licen'see's letters dated March ll, 1986 and April 14, 1986 based on the provisions of 10 CFR'0.55a(g)(6)(i').
ASNE Section ZI requires measurement of flnw rate. using a ra'te or quantity meter.
The Code requirement can be met using sta'ndard industi ia1 designs and comnercial ly available components; therefore, the Code r'equirement is practical and these modifications should be completed.
paragraph 10 CFR 50,55a(g)(6)(i) states that the Conmission may grant such relief and may iin'pose such alternative requirements as it determines is authoriized by law.and will not endanger life or property or the con~on defense and security and is otherwise in the public interest giving due consideration to the. burden upon the licensee that could result if the <<-
quirements were imposed on the facility.
The staff's Safety Evaluation dated January 13 ~ 1986 determined that the licensee ~ould measure the
'differential pressure across the pumps during the quarterly pump test (IMP-4240) and then compare the measurement to the established reference
~valve This provides for an indirect measurement of flow rate and
4
~ verifies the operational readiness of the pump (IWP-1500).
The pumps will also be monitored quarterly for vibration amplitude and inlet pressure.
Based on these tests, staff granted interim relief from the installation of flow measurement instrumentation until the end of the next'refueling outage The staff conc1uded on January 13, 1986 that this interim relief will not endanger life or property or the conmon
-defense and security of the public Based on the licensee's letters of March ll. 1986 and April 14, 1986, the staff has given due consideration to the burden upon the licensee that could result if the requirements were imposed on the facility
.duri'ng the 1986 r'efueling outage.
The staff concludes that installa-tion of the flew measurement instrumentation at this time would sig-
,nificantly delay startup after the Cycle 3 (1986) refueling.
The staff further concludes that the pump tests being performed by the licensee to assure the'operational readiness of the pumps, as described in the Safety E'valuation of January 13 ~ 1986, are still sufficient to grant schedular relief for the installation of the required instrumentation vntil the end of the Cycle 4 (1987-1988) refueling outage.
Principal Contributor:
Hartin Hinn
~>ate-Hay 13, 1~86