Document: NRC Regulatory Guide
Document ID: 1731a882-b0c5-418d-b65e-55646c26be5c
Document Type: regulatory_guide
Title: 03/2007
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0703/ML070380553.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.9
CFR Part: 
CFR Title: 

Content:
sults in declaration of the emergency diesel generator as being inoperable should count as one demand and one failure. Exploratory tests during corrective or preventive maintenance should not count as demands or failures. However, the successful test that is performed to declare the emergency diesel generator operable should count as a demand. 2.2 Test Descriptions The table on site testing from the standard is repeated in this guide as Table 1 to address supplementary guidance when required. The following test descriptions should be used in conjunction with the preoperational and surveillance testing described in the table. The licensee should have detailed procedures for each test described herein. The procedures should identify special arrangements or changes in normal system configuration that must be made to put the emergency diesel generator under test. Jumpers and other nonstandard configurations or arrangements should not be used after initial equipment startup testing. 2.2.1 Starting Test Clause 7.2.1.1 of IEEE Std 387-1995 should be supplemented as follows: The acceptance criteria for frequency and voltage should be equal to or higher than the minimum required voltage and frequency within specified time allowance for the safety-related loads. 2.2.2 Slow-Start Test Clause 7.5.1 of IEEE Std 387-1995 should be supplemented as follows: This test involves demonstrating proper startup from standby conditions, and verify that the required design voltage and frequency are attained. For this test, the emergency diesel generator can be slow-started and reach rated speed on a prescribed schedule to minimize stress and wear. Rev. 4 of RG 1.9, Page 10 Table 1 Reference: IEEE 387 Clause: Tests Site acceptance tests (7.2)* Pre- operational tests (7.3)* Availability tests (7.4.2.1)* (Surveillance) System operation tests: shutdown/ refueling (7.4.2.2)* Independence tests 10 years (7.4.2.3)* Monthly 6 Month 7.2.1.1 Starting X X 7.2.1.2 Load acceptance X X 7.2.1.3 Rated Load