Document: NUREG-0800
Document ID: 4139e3ab-3087-44d3-8f66-193711d2480a
Document Type: srp
Title: EMERGENCY DIESEL ENGINE STARTING SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350041.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.6
CFR Part: 
CFR Title: 

Content:
ach diesel engine should be provided with a dedicated air starting system consisting of an air compressor, an air dryer, one or more air receiver(s), piping, injection lines and valves, and devices to crank the engine as recommended by the engine manufacturer. g. As a minimum, the air starting system should be capable of cranking a cold diesel engine five times without recharging the receiver(s). The air starting system capacity should be determined as follows: (1) each cranking cycle duration should be approximately 3 seconds; (2) consist of two to three engine revolutions; or (3) air start require- ments per engine start provided by the engine manufacturer; whichever air start requirement is larger. h. Alarms should be provided which alert operating personnel if the air receiver pressure falls below the minimum allowable value. i. Provisions should be made for the periodic or automatic blowdown of accumulated moisture and foreign material in the air receiver(s), and other critical points of the system. j. Starting air should be dried to a dew point of not more than 500F when installed in a normally controlled 700F environment, otherwise the starting air dew point should be controlled to at least 100F less than the lowest expected ambient temperature. 9.5.6-3 Rev. 2 - July 1981 III. REVIEW PROCEDURES The procedures below are used during the construction permit (CP) review to determine that the design criteria and bases and the preliminary design as set forth in the preliminary safety analysis report meet the acceptance criteria given in subsection II of this SRP section. For the review of operating license (OL) applications, the procedures are used to verify that the initial design criteria and bases have been appropriately implemented in the final design as set forth in the final safety analysis report. The review procedures for OL applications include a determination that the content and intent of the tech- nical specifications prepared by the applicant are in