ML17139C671
| ML17139C671 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 11/08/1984 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML17139C670 | List: |
| References | |
| NUDOCS 8411200080 | |
| Download: ML17139C671 (2) | |
Text
ENCLOSURE SUSQUEHANNA UNIT I SAFETY EVALUATION OF FIFTH DIESEL GENERATOR QUALIFICATION TEST Pennsylvania Power 5 Light Company is installing an additional diesel generator at Susquehanna SES.
The main purpose of this new additional diesel generator is to be a replacement for any one of the existing diesel generators which is out of service for maintenance or other reasons.
The new diesel generator is similar in design to the existing diesel generators but slightly larger.
The new diesel generator unit is composed of diesel engine manufactured by Cooper Bessmer and a generator manufactured by the Parson Peebles Electrical Product Division.
The diesel generator unit is similar to the 5500 kW unit being used at the Palo Verde Station with differences in the areas of type of excitation, air receiver capacity, system inertia value (WR
) and generator capacity.
The diesel generator unit in the Palo Verde has passed the 300-start-and-load qualification test program.
Therefore, in accordance with 5.4.3 of IEEE 387-1977 modifications to a qualified diesel generator unit such as governor, generator, overall system WR
, excitation characteristics, and other 2
accessories/auxiliaries that may change the capability or performance of a previously qualified engine generator unit shall be qualified by analysis or further testing, or both.
The licensee has submitted justification in the form of analysis and proposed further testing to preclude the need to perform an 8411200080 841108' PDR.. ADOCK '05000387
'P
'PDR
additional 300-start-and-load qualification test.
The staff has reviewed the licensee's analysis with respect to WR,'enerator
- capacity, and air receiver capacity; and his commitment to conduct a 10-start-and-load test in addition to the plant preoperational test program as described in the Regulatory Guide 1.l08, C.2, which would result in a total of 79 tests for the fifth diesel generator unit.
We find that previous 'tests of the diesel generator performed in Palo Verde along with comparative analysis of the generator and successful completion of the testing program prescribed for the diesel generator combination provides reasonable assurance that the Susquehanna additional diesel generator unit will have the capability and reliability to perform their required function.
Based on our evaluation of the information provided in response to our concern, we conclude the licensee has satisfied the recommendation of the IEEE 387-1977, "Diesel Generator Units Applied as Standby Power Supplies for Nuclear Power Generation Stations,"
as endorsed by Regulatory Guide 1.9, for qualifying the diesel generator unit and is, therefore, acceptable.
However, in addition to the in situ tests required by RG 1. 108 to establish the onsite diesel generator reliability, we will require periodic testing to assure continued reliability of the additional diesel generator.