550Chapter 20: Ordering

Component failure rates

Failure rates for basic Application Module components in terms of the number of expected failures in one million hours of operation are listed in Table 152 and the rates for basic IPE Module components are listed in Table 153.

Table 152

Application Module projected component failure rates

Part

Component

Failure rate

Mean

number

 

per million

time

 

 

hours

between

 

 

 

failures

 

 

 

 

NT7D18AA

Application Equipment

1.43

699,500

 

Module

 

 

NT7D62AA

Disk tape assembly

17.24

58,000

NT7D64AA

AM power supply, ac

13.89

72,000

NT7D64DC

AM power supply, dc

13.89

72,000

A0351919

MVME147 SBC card

11.98

83,500

A0600164

MVME167 SBC card

11.98

83,500

A0351167

MVME712AM transition

11.98

83,500

 

card with modem

 

 

A0352210

MVME333-2 XCC card

11.72

85,500

A0351166

MVME705B transition

16.67

60,000

 

card

 

 

A0376918

MVME332XTS ACC card

11.98

83,500

A0351356

TEAC MT-2ST/N50

 

 

 

cassette tape drive

93.46

10,700

 

- at 15 min per 8 hours

29.07

34,400

 

 

 

 

553-3202-210 Standard October 1998

Page 568
Image 568
Meridian America Link/Customer Controlled Routing manual Component failure rates, Hours, Failures