Preparation And Connection; Introduction - SPX Radiodetection Pearpoint P571 Flexicoiler Operation Manual

Section 2 - Preparation and connection
1.

Introduction

This Section details the correct procedure to safely prepare and connect the P571 flexicoiler System.
WARNING: Risk of explosion.
Do not use any Explosion Proof equipment if there is damage to the body or any other part. The explosion
proof certification may be violated rendering the equipment unsafe to use in a hazardous environment. Contact
your Pearpoint representative immediately.
Cautions:
1. Any repair work to Explosion Proof equipment must be carried out by an approved person, only.
2. Before proceeding to connect your system, read the section below on flame paths.
2.1.1 Flame paths
At all stages of operation, particular attention must be given to flame paths because the condition of all
flame paths affect the safe operation of the equipment. Within this manual there are illustrations which
show the locations of the flame paths for all of the Explosion Proof items of the system. You will note
that they are, without exception, the external mating surfaces of revolving joints.
The critical features are:

The surface finish of the mating faces

The gap between the mating faces

The length of the mating faces
You must not, as part of any operational or maintenance procedure, do anything which will:

Roughen the surface finish on the face

Change the width of the gap between the mating faces

Reduce the length of the mating faces
If you know, or suspect, that any of the critical features have been adversely affected during surveying
operations, you must take immediate steps to correct the problem. However, this type of problem would
normally occur only as a result of severe impact damage or if there had been an explosion within the
device.
If equipment returned for maintenance has suffered an internal explosion, it is imperative that all the flame
paths are checked before returning it to use. Damage to the surface finish can only occur as a result of
careless assembly since once the equipment is assembled all of the mating surfaces are protected.
Damaged flame paths cannot be reworked. A new, replacement part must be fitted.
It is important to inspect flame paths at regular intervals. We suggest six months as the maximum
interval to ensure that the surface finish and dimensions are correct. If the equipment has been stowed
with its protective caps in place and has not suffered impact damage, it is unlikely that there will be any
damage to the flame paths.
To summarize: Equipment which is carefully assembled and disassembled during survey work should
not suffer damage to flame paths. During surveying, flame paths may suffer damage as the result of
internal explosion or if visible impact damage occurs.
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