Day 085 - 08 Feb 95 - Page 45
1 the grill will be at the temperature which are put in
2 parenthesis on appendix 2?
3 A. On appendix 2, referring to the gas grills that were in
4 operation then, at the time that you do the calibration you
5 would anticipate that those temperatures would be within
6 that range. That would tell you that the grill was
7 functioning correctly, that the air flows were correct.
8 Throughout the cooking, when you have put meat down on the
9 grill, that messes up and jumbles up the temperatures on
10 the grill surface. It will be above 350, but to understand
11 that the gas -- the important thing with the gas grill is
12 that the flow of air through it is right, that everything
13 is set up correctly. To understand that correctly, you
14 have to do a test at a specific time of the day to
15 establish that.
16
17 MS. STEEL: So that is just a one-off test in the morning
18 before you get going?
19 A. To do it correctly, yes.
20
21 Q. Is that the type of grill that was in operation in Preston
22 at the time of the food poisoning incidents?
23 A. I am sorry to say, I would not have an idea.
24
25 Q. Do you know what the date of this document is?
26 A. I do not know the date of the document, but regardless
27 of the date, clamshell grills have been around, I believe,
28 before Preston was in -- the incident at Preston, so they
29 could either have had or not had it, so both of the
30 technologies were in operation so it is possible either
31 way.
32
33 MR. JUSTICE BELL: In other words, all appendix 2 is is a check
34 before you start cooking, made at some time before you
35 start cooking, that you have got your proper air flows so
36 that the temperature is related as you would expect if it
37 is all working properly and reaching the temperatures which
38 you would expect if it is all working properly?
39 A. That is right. This really is a work sheet for me to
40 take to the station to record it on. You would have your
41 card which tells you what to do -----
42
43 Q. But I am right in what I have said?
44 A. You are right in what you say. But you just tick to
45 say that the criteria had been met, so you would use this
46 as your work sheet as you did it.
47
48 MR. RAMPTON: My Lord, paragraph 8 of Mr. Wignall's statement
49 tells us this copy of the calibration check list was the
50 one in use in 1990.
51
52 MS. STEEL: Do you know how often these calibration check lists
53 were carried out?
54 A. This was used as a work sheet each day on which you
55 would -- because you had a calendar on the wall which was
56 rather cumbersome to move around, you have would a
57 calibration check list that you would take to the station
58 which encompassed a lot of the checks that were done. You
59 would use this as an aid to record what you were doing, and
60 then you would then go and check off that you had done it.
