Daily Inspection Instructions; Introduction; Operational Features - QSA Global SENTINEL SENTRY 330 Manual

3. DAILY INSPECTION INSTRUCTIONS.

3.1 Introduction

The USNRC and international regulations require routine inspections to ensure that industrial radiography
equipment is operating safely and properly. Design of the SENTINEL SENTRY 110 and SENTRY 330
devices includes inherent safety features and quality construction to ensure the highest degree of quality,
safety, reliability and durability.
Care should be taken to prevent radiological incidents that can occur from neglect, accidental damage,
abuse and the lack of inspection and maintenance.
The following instructions should be followed carefully to ensure safe and proper operation of this
equipment.

3.2 Operational Features

Source Assembly
A double-encapsulated sealed source containing the radioactive Cobalt-60 is swaged (crimped) to one
end of a flexible stainless steel leader, commonly referred to as the source holder or pigtail. A stainless
steel stop-ball and a stainless steel connector are swaged to the opposite end of the source holder. The
stop-ball provides the means to secure the source assembly within the gamma-ray source projector's
locking mechanism. The source assembly connector provides the means to attach the control cable
connector to enable remote projection and retraction of the source assembly. The source assembly
connector and projector locking mechanism are designed so that the sealed source cannot be projected
from the gamma-ray source projector unless it has been properly coupled to the control cable connector
and the remote control. (See figure 3.1)
Figure 4 - Source assembly and remote control cable connectors
QSA Global, Inc.  40 North Avenue Burlington, MA 01803  888.272.2242  781.272.2000  qsa-global.com
Operations Manual  MAN-038 March 2019  Page 26 of 100